Merge branch 'for-next/misc'

43 files changed, 4641 insertions, 1740 deletions

diff --git a/scripts/.gitignore b/scripts/.gitignore
index 2a9ae6bdcf..5aa2943a71 100644
--- a/scripts/.gitignore
+++ b/scripts/.gitignore
@@ -26,3 +26,4 @@ mxsimage
 mxsboot
 mxs-usb-loader
 omap4_usbboot
+omap3-usb-loader
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index f3771902b7..512d217324 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -3,6 +3,7 @@
 
 # Convenient variables
 comma   := ,
+quote   := "
 squote  := '
 empty   :=
 space   := $(empty) $(empty)
diff --git a/scripts/Kconfig b/scripts/Kconfig
new file mode 100644
index 0000000000..14a577ac4f
--- /dev/null
+++ b/scripts/Kconfig
@@ -0,0 +1,51 @@
+menu "Host Tools"
+
+config COMPILE_HOST_TOOLS
+	bool "Allow to enable unused host tools"
+	help
+	  Usually the needed host tools are selected (or selectable) depending
+	  on some config options. If you say yes here, the host tools that are
+	  not needed can be selected, too.
+
+	  This is usefull for compile coverage testing and for packaging the
+	  host tools.
+
+source scripts/imx/Kconfig
+
+config MVEBU_HOSTTOOLS
+	bool "mvebu hosttools" if COMPILE_HOST_TOOLS
+	depends on ARCH_MVEBU || COMPILE_HOST_TOOLS
+	default y if ARCH_MVEBU
+	help
+	  This enables building the tools kwbimage to create an image suitable
+	  for Marvell mvebu machines and kwboot to boot via UART.
+
+config MXS_HOSTTOOLS
+	bool "mxs hosttools" if COMPILE_HOST_TOOLS
+	depends on ARCH_MXS || COMPILE_HOST_TOOLS
+	default y if ARCH_MXS
+	help
+	  This builds the tools mxsimage and mxsboot which are needed to
+	  create bootable image files for mxs. You need openssl development
+	  files to compile this tool.
+
+config OMAP3_USB_LOADER
+	bool "omap3 USB loader"
+	depends on ARCH_OMAP3 || COMPILE_HOST_TOOLS
+	help
+	  Say Y here to build the omap3 usb loader tool.
+
+	  You need libusb-1.0 to compile this tool.
+
+config OMAP4_HOSTTOOL_USBBOOT
+	bool "omap4 usbboot"
+	depends on (ARCH_OMAP4 && !MMU) || COMPILE_HOST_TOOLS
+	default y if OMAP4_USBBOOT
+	help
+	  Say Y here to build the omap4 usb loader tool.
+	  Note that you need to enable OMAP4_USBBOOT to create an image
+	  suitable to boot using this tool.
+
+	  You need libusb-1.0 to compile this tool.
+
+endmenu
diff --git a/scripts/Makefile b/scripts/Makefile
index 8eda41e13b..59d22e18bd 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -12,14 +12,14 @@ hostprogs-y                      += bareboxcrc32
 hostprogs-y                      += kernel-install
 hostprogs-$(CONFIG_IMD)          += bareboximd
 hostprogs-$(CONFIG_KALLSYMS)     += kallsyms
-hostprogs-$(CONFIG_ARCH_MVEBU)   += kwbimage kwboot
+hostprogs-$(CONFIG_MVEBU_HOSTTOOLS) += kwbimage kwboot
 hostprogs-$(CONFIG_ARCH_NETX)    += gen_netx_image
 hostprogs-$(CONFIG_ARCH_OMAP)    += omap_signGP mk-omap-image
 hostprogs-$(CONFIG_ARCH_S5PCxx)  += s5p_cksum
 hostprogs-$(CONFIG_ARCH_DAVINCI) += mkublheader
 hostprogs-$(CONFIG_ARCH_ZYNQ)	 += zynq_mkimage
 hostprogs-$(CONFIG_ARCH_SOCFPGA) += socfpga_mkimage
-hostprogs-$(CONFIG_ARCH_MXS)     += mxsimage mxsboot
+hostprogs-$(CONFIG_MXS_HOSTTOOLS)+= mxsimage mxsboot
 HOSTCFLAGS += -I$(srctree)/scripts/include/
 HOSTLOADLIBES_mxsimage  = `pkg-config --libs openssl`
 HOSTCFLAGS_omap3-usb-loader.o = `pkg-config --cflags libusb-1.0`
@@ -27,7 +27,7 @@ HOSTLOADLIBES_omap3-usb-loader  = `pkg-config --libs libusb-1.0`
 hostprogs-$(CONFIG_OMAP3_USB_LOADER)  += omap3-usb-loader
 HOSTCFLAGS_omap4_usbboot.o = `pkg-config --cflags libusb-1.0`
 HOSTLOADLIBES_omap4_usbboot = -lpthread `pkg-config --libs libusb-1.0`
-hostprogs-$(CONFIG_OMAP4_USBBOOT) += omap4_usbboot
+hostprogs-$(CONFIG_OMAP4_HOSTTOOL_USBBOOT) += omap4_usbboot
 
 subdir-y			+= mod
 subdir-y			+= imx
diff --git a/scripts/dtc/.gitignore b/scripts/dtc/.gitignore
index 80f6b50fdf..cdabdc95a6 100644
--- a/scripts/dtc/.gitignore
+++ b/scripts/dtc/.gitignore
@@ -2,4 +2,3 @@ dtc
 dtc-lexer.lex.c
 dtc-parser.tab.c
 dtc-parser.tab.h
-fdtget
diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile
index 05973b12aa..06aaa8c550 100644
--- a/scripts/dtc/Makefile
+++ b/scripts/dtc/Makefile
@@ -1,17 +1,15 @@
 # scripts/dtc makefile
 
-hostprogs-y	:= dtc fdtget
+hostprogs-y	:= dtc
 always		:= $(hostprogs-y)
 
 dtc-objs	:= dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
 		   srcpos.o checks.o util.o
 dtc-objs	+= dtc-lexer.lex.o dtc-parser.tab.o
 
-libfdt-objs	= fdt.o fdt_ro.o fdt_strerror.o fdt_wip.o
+libfdt-objs	= fdt.o fdt_ro.o fdt_strerror.o fdt_wip.o fdt_overlay.o
 libfdt-objs	+= fdt_empty_tree.o fdt_rw.o fdt_sw.o
 
-fdtget-objs	+= fdtget.o $(libfdt-objs) util.o
-
 # Source files need to get at the userspace version of libfdt_env.h to compile
 
 HOSTCFLAGS_DTC := -I$(src)
@@ -33,7 +31,7 @@ HOSTCFLAGS_fdt_wip.o := $(HOSTCFLAGS_DTC)
 HOSTCFLAGS_fdt_empty_tree.o := $(HOSTCFLAGS_DTC)
 HOSTCFLAGS_fdt_rw.o := $(HOSTCFLAGS_DTC)
 HOSTCFLAGS_fdt_sw.o := $(HOSTCFLAGS_DTC)
-HOSTCFLAGS_fdtget.o := $(HOSTCFLAGS_DTC)
+HOSTCFLAGS_fdt_overlay.o := $(HOSTCFLAGS_DTC)
 
 HOSTCFLAGS_dtc-lexer.lex.o := $(HOSTCFLAGS_DTC)
 HOSTCFLAGS_dtc-parser.tab.o := $(HOSTCFLAGS_DTC)
diff --git a/scripts/dtc/checks.c b/scripts/dtc/checks.c
index 3bf0fa4a48..815eaf140a 100644
--- a/scripts/dtc/checks.c
+++ b/scripts/dtc/checks.c
@@ -40,16 +40,11 @@ enum checkstatus {
 
 struct check;
 
-typedef void (*tree_check_fn)(struct check *c, struct node *dt);
-typedef void (*node_check_fn)(struct check *c, struct node *dt, struct node *node);
-typedef void (*prop_check_fn)(struct check *c, struct node *dt,
-			      struct node *node, struct property *prop);
+typedef void (*check_fn)(struct check *c, struct dt_info *dti, struct node *node);
 
 struct check {
 	const char *name;
-	tree_check_fn tree_fn;
-	node_check_fn node_fn;
-	prop_check_fn prop_fn;
+	check_fn fn;
 	void *data;
 	bool warn, error;
 	enum checkstatus status;
@@ -58,91 +53,80 @@ struct check {
 	struct check **prereq;
 };
 
-#define CHECK_ENTRY(nm, tfn, nfn, pfn, d, w, e, ...)	       \
-	static struct check *nm##_prereqs[] = { __VA_ARGS__ }; \
-	static struct check nm = { \
-		.name = #nm, \
-		.tree_fn = (tfn), \
-		.node_fn = (nfn), \
-		.prop_fn = (pfn), \
-		.data = (d), \
-		.warn = (w), \
-		.error = (e), \
+#define CHECK_ENTRY(nm_, fn_, d_, w_, e_, ...)	       \
+	static struct check *nm_##_prereqs[] = { __VA_ARGS__ }; \
+	static struct check nm_ = { \
+		.name = #nm_, \
+		.fn = (fn_), \
+		.data = (d_), \
+		.warn = (w_), \
+		.error = (e_), \
 		.status = UNCHECKED, \
-		.num_prereqs = ARRAY_SIZE(nm##_prereqs), \
-		.prereq = nm##_prereqs, \
+		.num_prereqs = ARRAY_SIZE(nm_##_prereqs), \
+		.prereq = nm_##_prereqs, \
 	};
-#define WARNING(nm, tfn, nfn, pfn, d, ...) \
-	CHECK_ENTRY(nm, tfn, nfn, pfn, d, true, false, __VA_ARGS__)
-#define ERROR(nm, tfn, nfn, pfn, d, ...) \
-	CHECK_ENTRY(nm, tfn, nfn, pfn, d, false, true, __VA_ARGS__)
-#define CHECK(nm, tfn, nfn, pfn, d, ...) \
-	CHECK_ENTRY(nm, tfn, nfn, pfn, d, false, false, __VA_ARGS__)
-
-#define TREE_WARNING(nm, d, ...) \
-	WARNING(nm, check_##nm, NULL, NULL, d, __VA_ARGS__)
-#define TREE_ERROR(nm, d, ...) \
-	ERROR(nm, check_##nm, NULL, NULL, d, __VA_ARGS__)
-#define TREE_CHECK(nm, d, ...) \
-	CHECK(nm, check_##nm, NULL, NULL, d, __VA_ARGS__)
-#define NODE_WARNING(nm, d, ...) \
-	WARNING(nm, NULL, check_##nm, NULL, d,  __VA_ARGS__)
-#define NODE_ERROR(nm, d, ...) \
-	ERROR(nm, NULL, check_##nm, NULL, d, __VA_ARGS__)
-#define NODE_CHECK(nm, d, ...) \
-	CHECK(nm, NULL, check_##nm, NULL, d, __VA_ARGS__)
-#define PROP_WARNING(nm, d, ...) \
-	WARNING(nm, NULL, NULL, check_##nm, d, __VA_ARGS__)
-#define PROP_ERROR(nm, d, ...) \
-	ERROR(nm, NULL, NULL, check_##nm, d, __VA_ARGS__)
-#define PROP_CHECK(nm, d, ...) \
-	CHECK(nm, NULL, NULL, check_##nm, d, __VA_ARGS__)
-
-#ifdef __GNUC__
-static inline void check_msg(struct check *c, const char *fmt, ...) __attribute__((format (printf, 2, 3)));
-#endif
-static inline void check_msg(struct check *c, const char *fmt, ...)
+#define WARNING(nm_, fn_, d_, ...) \
+	CHECK_ENTRY(nm_, fn_, d_, true, false, __VA_ARGS__)
+#define ERROR(nm_, fn_, d_, ...) \
+	CHECK_ENTRY(nm_, fn_, d_, false, true, __VA_ARGS__)
+#define CHECK(nm_, fn_, d_, ...) \
+	CHECK_ENTRY(nm_, fn_, d_, false, false, __VA_ARGS__)
+
+static inline void  PRINTF(5, 6) check_msg(struct check *c, struct dt_info *dti,
+					   struct node *node,
+					   struct property *prop,
+					   const char *fmt, ...)
 {
 	va_list ap;
 	va_start(ap, fmt);
 
 	if ((c->warn && (quiet < 1))
 	    || (c->error && (quiet < 2))) {
-		fprintf(stderr, "%s (%s): ",
+		fprintf(stderr, "%s: %s (%s): ",
+			strcmp(dti->outname, "-") ? dti->outname : "<stdout>",
 			(c->error) ? "ERROR" : "Warning", c->name);
+		if (node) {
+			fprintf(stderr, "%s", node->fullpath);
+			if (prop)
+				fprintf(stderr, ":%s", prop->name);
+			fputs(": ", stderr);
+		}
 		vfprintf(stderr, fmt, ap);
 		fprintf(stderr, "\n");
 	}
+	va_end(ap);
 }
 
-#define FAIL(c, ...) \
-	do { \
-		TRACE((c), "\t\tFAILED at %s:%d", __FILE__, __LINE__); \
-		(c)->status = FAILED; \
-		check_msg((c), __VA_ARGS__); \
+#define FAIL(c, dti, node, ...)						\
+	do {								\
+		TRACE((c), "\t\tFAILED at %s:%d", __FILE__, __LINE__);	\
+		(c)->status = FAILED;					\
+		check_msg((c), dti, node, NULL, __VA_ARGS__);		\
 	} while (0)
 
-static void check_nodes_props(struct check *c, struct node *dt, struct node *node)
+#define FAIL_PROP(c, dti, node, prop, ...)				\
+	do {								\
+		TRACE((c), "\t\tFAILED at %s:%d", __FILE__, __LINE__);	\
+		(c)->status = FAILED;					\
+		check_msg((c), dti, node, prop, __VA_ARGS__);		\
+	} while (0)
+
+
+static void check_nodes_props(struct check *c, struct dt_info *dti, struct node *node)
 {
 	struct node *child;
-	struct property *prop;
 
 	TRACE(c, "%s", node->fullpath);
-	if (c->node_fn)
-		c->node_fn(c, dt, node);
-
-	if (c->prop_fn)
-		for_each_property(node, prop) {
-			TRACE(c, "%s\t'%s'", node->fullpath, prop->name);
-			c->prop_fn(c, dt, node, prop);
-		}
+	if (c->fn)
+		c->fn(c, dti, node);
 
 	for_each_child(node, child)
-		check_nodes_props(c, dt, child);
+		check_nodes_props(c, dti, child);
 }
 
-static bool run_check(struct check *c, struct node *dt)
+static bool run_check(struct check *c, struct dt_info *dti)
 {
+	struct node *dt = dti->dt;
 	bool error = false;
 	int i;
 
@@ -155,10 +139,10 @@ static bool run_check(struct check *c, struct node *dt)
 
 	for (i = 0; i < c->num_prereqs; i++) {
 		struct check *prq = c->prereq[i];
-		error = error || run_check(prq, dt);
+		error = error || run_check(prq, dti);
 		if (prq->status != PASSED) {
 			c->status = PREREQ;
-			check_msg(c, "Failed prerequisite '%s'",
+			check_msg(c, dti, NULL, NULL, "Failed prerequisite '%s'",
 				  c->prereq[i]->name);
 		}
 	}
@@ -166,11 +150,8 @@ static bool run_check(struct check *c, struct node *dt)
 	if (c->status != UNCHECKED)
 		goto out;
 
-	if (c->node_fn || c->prop_fn)
-		check_nodes_props(c, dt, dt);
+	check_nodes_props(c, dti, dt);
 
-	if (c->tree_fn)
-		c->tree_fn(c, dt);
 	if (c->status == UNCHECKED)
 		c->status = PASSED;
 
@@ -188,13 +169,14 @@ out:
  */
 
 /* A check which always fails, for testing purposes only */
-static inline void check_always_fail(struct check *c, struct node *dt)
+static inline void check_always_fail(struct check *c, struct dt_info *dti,
+				     struct node *node)
 {
-	FAIL(c, "always_fail check");
+	FAIL(c, dti, node, "always_fail check");
 }
-TREE_CHECK(always_fail, NULL);
+CHECK(always_fail, check_always_fail, NULL);
 
-static void check_is_string(struct check *c, struct node *root,
+static void check_is_string(struct check *c, struct dt_info *dti,
 			    struct node *node)
 {
 	struct property *prop;
@@ -205,15 +187,43 @@ static void check_is_string(struct check *c, struct node *root,
 		return; /* Not present, assumed ok */
 
 	if (!data_is_one_string(prop->val))
-		FAIL(c, "\"%s\" property in %s is not a string",
-		     propname, node->fullpath);
+		FAIL_PROP(c, dti, node, prop, "property is not a string");
 }
 #define WARNING_IF_NOT_STRING(nm, propname) \
-	WARNING(nm, NULL, check_is_string, NULL, (propname))
+	WARNING(nm, check_is_string, (propname))
 #define ERROR_IF_NOT_STRING(nm, propname) \
-	ERROR(nm, NULL, check_is_string, NULL, (propname))
+	ERROR(nm, check_is_string, (propname))
+
+static void check_is_string_list(struct check *c, struct dt_info *dti,
+				 struct node *node)
+{
+	int rem, l;
+	struct property *prop;
+	char *propname = c->data;
+	char *str;
+
+	prop = get_property(node, propname);
+	if (!prop)
+		return; /* Not present, assumed ok */
+
+	str = prop->val.val;
+	rem = prop->val.len;
+	while (rem > 0) {
+		l = strnlen(str, rem);
+		if (l == rem) {
+			FAIL_PROP(c, dti, node, prop, "property is not a string list");
+			break;
+		}
+		rem -= l + 1;
+		str += l + 1;
+	}
+}
+#define WARNING_IF_NOT_STRING_LIST(nm, propname) \
+	WARNING(nm, check_is_string_list, (propname))
+#define ERROR_IF_NOT_STRING_LIST(nm, propname) \
+	ERROR(nm, check_is_string_list, (propname))
 
-static void check_is_cell(struct check *c, struct node *root,
+static void check_is_cell(struct check *c, struct dt_info *dti,
 			  struct node *node)
 {
 	struct property *prop;
@@ -224,19 +234,18 @@ static void check_is_cell(struct check *c, struct node *root,
 		return; /* Not present, assumed ok */
 
 	if (prop->val.len != sizeof(cell_t))
-		FAIL(c, "\"%s\" property in %s is not a single cell",
-		     propname, node->fullpath);
+		FAIL_PROP(c, dti, node, prop, "property is not a single cell");
 }
 #define WARNING_IF_NOT_CELL(nm, propname) \
-	WARNING(nm, NULL, check_is_cell, NULL, (propname))
+	WARNING(nm, check_is_cell, (propname))
 #define ERROR_IF_NOT_CELL(nm, propname) \
-	ERROR(nm, NULL, check_is_cell, NULL, (propname))
+	ERROR(nm, check_is_cell, (propname))
 
 /*
  * Structural check functions
  */
 
-static void check_duplicate_node_names(struct check *c, struct node *dt,
+static void check_duplicate_node_names(struct check *c, struct dt_info *dti,
 				       struct node *node)
 {
 	struct node *child, *child2;
@@ -246,12 +255,11 @@ static void check_duplicate_node_names(struct check *c, struct node *dt,
 		     child2;
 		     child2 = child2->next_sibling)
 			if (streq(child->name, child2->name))
-				FAIL(c, "Duplicate node name %s",
-				     child->fullpath);
+				FAIL(c, dti, node, "Duplicate node name");
 }
-NODE_ERROR(duplicate_node_names, NULL);
+ERROR(duplicate_node_names, check_duplicate_node_names, NULL);
 
-static void check_duplicate_property_names(struct check *c, struct node *dt,
+static void check_duplicate_property_names(struct check *c, struct dt_info *dti,
 					   struct node *node)
 {
 	struct property *prop, *prop2;
@@ -261,48 +269,116 @@ static void check_duplicate_property_names(struct check *c, struct node *dt,
 			if (prop2->deleted)
 				continue;
 			if (streq(prop->name, prop2->name))
-				FAIL(c, "Duplicate property name %s in %s",
-				     prop->name, node->fullpath);
+				FAIL_PROP(c, dti, node, prop, "Duplicate property name");
 		}
 	}
 }
-NODE_ERROR(duplicate_property_names, NULL);
+ERROR(duplicate_property_names, check_duplicate_property_names, NULL);
 
 #define LOWERCASE	"abcdefghijklmnopqrstuvwxyz"
 #define UPPERCASE	"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
 #define DIGITS		"0123456789"
 #define PROPNODECHARS	LOWERCASE UPPERCASE DIGITS ",._+*#?-"
+#define PROPNODECHARSSTRICT	LOWERCASE UPPERCASE DIGITS ",-"
 
-static void check_node_name_chars(struct check *c, struct node *dt,
+static void check_node_name_chars(struct check *c, struct dt_info *dti,
 				  struct node *node)
 {
 	int n = strspn(node->name, c->data);
 
 	if (n < strlen(node->name))
-		FAIL(c, "Bad character '%c' in node %s",
-		     node->name[n], node->fullpath);
+		FAIL(c, dti, node, "Bad character '%c' in node name",
+		     node->name[n]);
 }
-NODE_ERROR(node_name_chars, PROPNODECHARS "@");
+ERROR(node_name_chars, check_node_name_chars, PROPNODECHARS "@");
 
-static void check_node_name_format(struct check *c, struct node *dt,
+static void check_node_name_chars_strict(struct check *c, struct dt_info *dti,
+					 struct node *node)
+{
+	int n = strspn(node->name, c->data);
+
+	if (n < node->basenamelen)
+		FAIL(c, dti, node, "Character '%c' not recommended in node name",
+		     node->name[n]);
+}
+CHECK(node_name_chars_strict, check_node_name_chars_strict, PROPNODECHARSSTRICT);
+
+static void check_node_name_format(struct check *c, struct dt_info *dti,
 				   struct node *node)
 {
 	if (strchr(get_unitname(node), '@'))
-		FAIL(c, "Node %s has multiple '@' characters in name",
-		     node->fullpath);
+		FAIL(c, dti, node, "multiple '@' characters in node name");
+}
+ERROR(node_name_format, check_node_name_format, NULL, &node_name_chars);
+
+static void check_unit_address_vs_reg(struct check *c, struct dt_info *dti,
+				      struct node *node)
+{
+	const char *unitname = get_unitname(node);
+	struct property *prop = get_property(node, "reg");
+
+	if (!prop) {
+		prop = get_property(node, "ranges");
+		if (prop && !prop->val.len)
+			prop = NULL;
+	}
+
+	if (prop) {
+		if (!unitname[0])
+			FAIL(c, dti, node, "node has a reg or ranges property, but no unit name");
+	} else {
+		if (unitname[0])
+			FAIL(c, dti, node, "node has a unit name, but no reg property");
+	}
+}
+WARNING(unit_address_vs_reg, check_unit_address_vs_reg, NULL);
+
+static void check_property_name_chars(struct check *c, struct dt_info *dti,
+				      struct node *node)
+{
+	struct property *prop;
+
+	for_each_property(node, prop) {
+		int n = strspn(prop->name, c->data);
+
+		if (n < strlen(prop->name))
+			FAIL_PROP(c, dti, node, prop, "Bad character '%c' in property name",
+				  prop->name[n]);
+	}
 }
-NODE_ERROR(node_name_format, NULL, &node_name_chars);
+ERROR(property_name_chars, check_property_name_chars, PROPNODECHARS);
 
-static void check_property_name_chars(struct check *c, struct node *dt,
-				      struct node *node, struct property *prop)
+static void check_property_name_chars_strict(struct check *c,
+					     struct dt_info *dti,
+					     struct node *node)
 {
-	int n = strspn(prop->name, c->data);
+	struct property *prop;
+
+	for_each_property(node, prop) {
+		const char *name = prop->name;
+		int n = strspn(name, c->data);
 
-	if (n < strlen(prop->name))
-		FAIL(c, "Bad character '%c' in property name \"%s\", node %s",
-		     prop->name[n], prop->name, node->fullpath);
+		if (n == strlen(prop->name))
+			continue;
+
+		/* Certain names are whitelisted */
+		if (streq(name, "device_type"))
+			continue;
+
+		/*
+		 * # is only allowed at the beginning of property names not counting
+		 * the vendor prefix.
+		 */
+		if (name[n] == '#' && ((n == 0) || (name[n-1] == ','))) {
+			name += n + 1;
+			n = strspn(name, c->data);
+		}
+		if (n < strlen(name))
+			FAIL_PROP(c, dti, node, prop, "Character '%c' not recommended in property name",
+				  name[n]);
+	}
 }
-PROP_ERROR(property_name_chars, PROPNODECHARS);
+CHECK(property_name_chars_strict, check_property_name_chars_strict, PROPNODECHARSSTRICT);
 
 #define DESCLABEL_FMT	"%s%s%s%s%s"
 #define DESCLABEL_ARGS(node,prop,mark)		\
@@ -311,10 +387,11 @@ PROP_ERROR(property_name_chars, PROPNODECHARS);
 	((prop) ? (prop)->name : ""), \
 	((prop) ? "' in " : ""), (node)->fullpath
 
-static void check_duplicate_label(struct check *c, struct node *dt,
+static void check_duplicate_label(struct check *c, struct dt_info *dti,
 				  const char *label, struct node *node,
 				  struct property *prop, struct marker *mark)
 {
+	struct node *dt = dti->dt;
 	struct node *othernode = NULL;
 	struct property *otherprop = NULL;
 	struct marker *othermark = NULL;
@@ -331,50 +408,49 @@ static void check_duplicate_label(struct check *c, struct node *dt,
 		return;
 
 	if ((othernode != node) || (otherprop != prop) || (othermark != mark))
-		FAIL(c, "Duplicate label '%s' on " DESCLABEL_FMT
+		FAIL(c, dti, node, "Duplicate label '%s' on " DESCLABEL_FMT
 		     " and " DESCLABEL_FMT,
 		     label, DESCLABEL_ARGS(node, prop, mark),
 		     DESCLABEL_ARGS(othernode, otherprop, othermark));
 }
 
-static void check_duplicate_label_node(struct check *c, struct node *dt,
+static void check_duplicate_label_node(struct check *c, struct dt_info *dti,
 				       struct node *node)
 {
 	struct label *l;
+	struct property *prop;
 
 	for_each_label(node->labels, l)
-		check_duplicate_label(c, dt, l->label, node, NULL, NULL);
-}
-static void check_duplicate_label_prop(struct check *c, struct node *dt,
-				       struct node *node, struct property *prop)
-{
-	struct marker *m = prop->val.markers;
-	struct label *l;
+		check_duplicate_label(c, dti, l->label, node, NULL, NULL);
+
+	for_each_property(node, prop) {
+		struct marker *m = prop->val.markers;
 
-	for_each_label(prop->labels, l)
-		check_duplicate_label(c, dt, l->label, node, prop, NULL);
+		for_each_label(prop->labels, l)
+			check_duplicate_label(c, dti, l->label, node, prop, NULL);
 
-	for_each_marker_of_type(m, LABEL)
-		check_duplicate_label(c, dt, m->ref, node, prop, m);
+		for_each_marker_of_type(m, LABEL)
+			check_duplicate_label(c, dti, m->ref, node, prop, m);
+	}
 }
-ERROR(duplicate_label, NULL, check_duplicate_label_node,
-      check_duplicate_label_prop, NULL);
+ERROR(duplicate_label, check_duplicate_label_node, NULL);
 
-static void check_explicit_phandles(struct check *c, struct node *root,
-				    struct node *node, struct property *prop)
+static cell_t check_phandle_prop(struct check *c, struct dt_info *dti,
+				 struct node *node, const char *propname)
 {
+	struct node *root = dti->dt;
+	struct property *prop;
 	struct marker *m;
-	struct node *other;
 	cell_t phandle;
 
-	if (!streq(prop->name, "phandle")
-	    && !streq(prop->name, "linux,phandle"))
-		return;
+	prop = get_property(node, propname);
+	if (!prop)
+		return 0;
 
 	if (prop->val.len != sizeof(cell_t)) {
-		FAIL(c, "%s has bad length (%d) %s property",
-		     node->fullpath, prop->val.len, prop->name);
-		return;
+		FAIL_PROP(c, dti, node, prop, "bad length (%d) %s property",
+			  prop->val.len, prop->name);
+		return 0;
 	}
 
 	m = prop->val.markers;
@@ -384,42 +460,65 @@ static void check_explicit_phandles(struct check *c, struct node *root,
 			/* "Set this node's phandle equal to some
 			 * other node's phandle".  That's nonsensical
 			 * by construction. */ {
-			FAIL(c, "%s in %s is a reference to another node",
-			     prop->name, node->fullpath);
-			return;
+			FAIL(c, dti, node, "%s is a reference to another node",
+			     prop->name);
 		}
 		/* But setting this node's phandle equal to its own
 		 * phandle is allowed - that means allocate a unique
 		 * phandle for this node, even if it's not otherwise
 		 * referenced.  The value will be filled in later, so
-		 * no further checking for now. */
-		return;
+		 * we treat it as having no phandle data for now. */
+		return 0;
 	}
 
 	phandle = propval_cell(prop);
 
 	if ((phandle == 0) || (phandle == -1)) {
-		FAIL(c, "%s has bad value (0x%x) in %s property",
-		     node->fullpath, phandle, prop->name);
-		return;
+		FAIL_PROP(c, dti, node, prop, "bad value (0x%x) in %s property",
+		     phandle, prop->name);
+		return 0;
 	}
 
-	if (node->phandle && (node->phandle != phandle))
-		FAIL(c, "%s has %s property which replaces existing phandle information",
-		     node->fullpath, prop->name);
+	return phandle;
+}
+
+static void check_explicit_phandles(struct check *c, struct dt_info *dti,
+				    struct node *node)
+{
+	struct node *root = dti->dt;
+	struct node *other;
+	cell_t phandle, linux_phandle;
+
+	/* Nothing should have assigned phandles yet */
+	assert(!node->phandle);
+
+	phandle = check_phandle_prop(c, dti, node, "phandle");
+
+	linux_phandle = check_phandle_prop(c, dti, node, "linux,phandle");
+
+	if (!phandle && !linux_phandle)
+		/* No valid phandles; nothing further to check */
+		return;
+
+	if (linux_phandle && phandle && (phandle != linux_phandle))
+		FAIL(c, dti, node, "mismatching 'phandle' and 'linux,phandle'"
+		     " properties");
+
+	if (linux_phandle && !phandle)
+		phandle = linux_phandle;
 
 	other = get_node_by_phandle(root, phandle);
 	if (other && (other != node)) {
-		FAIL(c, "%s has duplicated phandle 0x%x (seen before at %s)",
-		     node->fullpath, phandle, other->fullpath);
+		FAIL(c, dti, node, "duplicated phandle 0x%x (seen before at %s)",
+		     phandle, other->fullpath);
 		return;
 	}
 
 	node->phandle = phandle;
 }
-PROP_ERROR(explicit_phandles, NULL);
+ERROR(explicit_phandles, check_explicit_phandles, NULL);
 
-static void check_name_properties(struct check *c, struct node *root,
+static void check_name_properties(struct check *c, struct dt_info *dti,
 				  struct node *node)
 {
 	struct property **pp, *prop = NULL;
@@ -435,8 +534,8 @@ static void check_name_properties(struct check *c, struct node *root,
 
 	if ((prop->val.len != node->basenamelen+1)
 	    || (memcmp(prop->val.val, node->name, node->basenamelen) != 0)) {
-		FAIL(c, "\"name\" property in %s is incorrect (\"%s\" instead"
-		     " of base node name)", node->fullpath, prop->val.val);
+		FAIL(c, dti, node, "\"name\" property is incorrect (\"%s\" instead"
+		     " of base node name)", prop->val.val);
 	} else {
 		/* The name property is correct, and therefore redundant.
 		 * Delete it */
@@ -447,60 +546,73 @@ static void check_name_properties(struct check *c, struct node *root,
 	}
 }
 ERROR_IF_NOT_STRING(name_is_string, "name");
-NODE_ERROR(name_properties, NULL, &name_is_string);
+ERROR(name_properties, check_name_properties, NULL, &name_is_string);
 
 /*
  * Reference fixup functions
  */
 
-static void fixup_phandle_references(struct check *c, struct node *dt,
-				     struct node *node, struct property *prop)
+static void fixup_phandle_references(struct check *c, struct dt_info *dti,
+				     struct node *node)
 {
-	struct marker *m = prop->val.markers;
-	struct node *refnode;
-	cell_t phandle;
+	struct node *dt = dti->dt;
+	struct property *prop;
 
-	for_each_marker_of_type(m, REF_PHANDLE) {
-		assert(m->offset + sizeof(cell_t) <= prop->val.len);
+	for_each_property(node, prop) {
+		struct marker *m = prop->val.markers;
+		struct node *refnode;
+		cell_t phandle;
+
+		for_each_marker_of_type(m, REF_PHANDLE) {
+			assert(m->offset + sizeof(cell_t) <= prop->val.len);
+
+			refnode = get_node_by_ref(dt, m->ref);
+			if (! refnode) {
+				if (!(dti->dtsflags & DTSF_PLUGIN))
+					FAIL(c, dti, node, "Reference to non-existent node or "
+							"label \"%s\"\n", m->ref);
+				else /* mark the entry as unresolved */
+					*((fdt32_t *)(prop->val.val + m->offset)) =
+						cpu_to_fdt32(0xffffffff);
+				continue;
+			}
 
-		refnode = get_node_by_ref(dt, m->ref);
-		if (! refnode) {
-			FAIL(c, "Reference to non-existent node or label \"%s\"\n",
-			     m->ref);
-			continue;
+			phandle = get_node_phandle(dt, refnode);
+			*((fdt32_t *)(prop->val.val + m->offset)) = cpu_to_fdt32(phandle);
 		}
-
-		phandle = get_node_phandle(dt, refnode);
-		*((cell_t *)(prop->val.val + m->offset)) = cpu_to_fdt32(phandle);
 	}
 }
-ERROR(phandle_references, NULL, NULL, fixup_phandle_references, NULL,
+ERROR(phandle_references, fixup_phandle_references, NULL,
       &duplicate_node_names, &explicit_phandles);
 
-static void fixup_path_references(struct check *c, struct node *dt,
-				  struct node *node, struct property *prop)
+static void fixup_path_references(struct check *c, struct dt_info *dti,
+				  struct node *node)
 {
-	struct marker *m = prop->val.markers;
-	struct node *refnode;
-	char *path;
+	struct node *dt = dti->dt;
+	struct property *prop;
 
-	for_each_marker_of_type(m, REF_PATH) {
-		assert(m->offset <= prop->val.len);
+	for_each_property(node, prop) {
+		struct marker *m = prop->val.markers;
+		struct node *refnode;
+		char *path;
 
-		refnode = get_node_by_ref(dt, m->ref);
-		if (!refnode) {
-			FAIL(c, "Reference to non-existent node or label \"%s\"\n",
-			     m->ref);
-			continue;
-		}
+		for_each_marker_of_type(m, REF_PATH) {
+			assert(m->offset <= prop->val.len);
 
-		path = refnode->fullpath;
-		prop->val = data_insert_at_marker(prop->val, m, path,
-						  strlen(path) + 1);
+			refnode = get_node_by_ref(dt, m->ref);
+			if (!refnode) {
+				FAIL(c, dti, node, "Reference to non-existent node or label \"%s\"\n",
+				     m->ref);
+				continue;
+			}
+
+			path = refnode->fullpath;
+			prop->val = data_insert_at_marker(prop->val, m, path,
+							  strlen(path) + 1);
+		}
 	}
 }
-ERROR(path_references, NULL, NULL, fixup_path_references, NULL,
-      &duplicate_node_names);
+ERROR(path_references, fixup_path_references, NULL, &duplicate_node_names);
 
 /*
  * Semantic checks
@@ -512,8 +624,47 @@ WARNING_IF_NOT_CELL(interrupt_cells_is_cell, "#interrupt-cells");
 WARNING_IF_NOT_STRING(device_type_is_string, "device_type");
 WARNING_IF_NOT_STRING(model_is_string, "model");
 WARNING_IF_NOT_STRING(status_is_string, "status");
+WARNING_IF_NOT_STRING(label_is_string, "label");
+
+WARNING_IF_NOT_STRING_LIST(compatible_is_string_list, "compatible");
+
+static void check_names_is_string_list(struct check *c, struct dt_info *dti,
+				       struct node *node)
+{
+	struct property *prop;
+
+	for_each_property(node, prop) {
+		const char *s = strrchr(prop->name, '-');
+		if (!s || !streq(s, "-names"))
+			continue;
+
+		c->data = prop->name;
+		check_is_string_list(c, dti, node);
+	}
+}
+WARNING(names_is_string_list, check_names_is_string_list, NULL);
+
+static void check_alias_paths(struct check *c, struct dt_info *dti,
+				    struct node *node)
+{
+	struct property *prop;
 
-static void fixup_addr_size_cells(struct check *c, struct node *dt,
+	if (!streq(node->name, "aliases"))
+		return;
+
+	for_each_property(node, prop) {
+		if (!prop->val.val || !get_node_by_path(dti->dt, prop->val.val)) {
+			FAIL_PROP(c, dti, node, prop, "aliases property is not a valid node (%s)",
+				  prop->val.val);
+			continue;
+		}
+		if (strspn(prop->name, LOWERCASE DIGITS "-") != strlen(prop->name))
+			FAIL(c, dti, node, "aliases property name must include only lowercase and '-'");
+	}
+}
+WARNING(alias_paths, check_alias_paths, NULL);
+
+static void fixup_addr_size_cells(struct check *c, struct dt_info *dti,
 				  struct node *node)
 {
 	struct property *prop;
@@ -529,7 +680,7 @@ static void fixup_addr_size_cells(struct check *c, struct node *dt,
 	if (prop)
 		node->size_cells = propval_cell(prop);
 }
-WARNING(addr_size_cells, NULL, fixup_addr_size_cells, NULL, NULL,
+WARNING(addr_size_cells, fixup_addr_size_cells, NULL,
 	&address_cells_is_cell, &size_cells_is_cell);
 
 #define node_addr_cells(n) \
@@ -537,7 +688,7 @@ WARNING(addr_size_cells, NULL, fixup_addr_size_cells, NULL, NULL,
 #define node_size_cells(n) \
 	(((n)->size_cells == -1) ? 1 : (n)->size_cells)
 
-static void check_reg_format(struct check *c, struct node *dt,
+static void check_reg_format(struct check *c, struct dt_info *dti,
 			     struct node *node)
 {
 	struct property *prop;
@@ -548,25 +699,25 @@ static void check_reg_format(struct check *c, struct node *dt,
 		return; /* No "reg", that's fine */
 
 	if (!node->parent) {
-		FAIL(c, "Root node has a \"reg\" property");
+		FAIL(c, dti, node, "Root node has a \"reg\" property");
 		return;
 	}
 
 	if (prop->val.len == 0)
-		FAIL(c, "\"reg\" property in %s is empty", node->fullpath);
+		FAIL_PROP(c, dti, node, prop, "property is empty");
 
 	addr_cells = node_addr_cells(node->parent);
 	size_cells = node_size_cells(node->parent);
 	entrylen = (addr_cells + size_cells) * sizeof(cell_t);
 
-	if ((prop->val.len % entrylen) != 0)
-		FAIL(c, "\"reg\" property in %s has invalid length (%d bytes) "
-		     "(#address-cells == %d, #size-cells == %d)",
-		     node->fullpath, prop->val.len, addr_cells, size_cells);
+	if (!entrylen || (prop->val.len % entrylen) != 0)
+		FAIL_PROP(c, dti, node, prop, "property has invalid length (%d bytes) "
+			  "(#address-cells == %d, #size-cells == %d)",
+			  prop->val.len, addr_cells, size_cells);
 }
-NODE_WARNING(reg_format, NULL, &addr_size_cells);
+WARNING(reg_format, check_reg_format, NULL, &addr_size_cells);
 
-static void check_ranges_format(struct check *c, struct node *dt,
+static void check_ranges_format(struct check *c, struct dt_info *dti,
 				struct node *node)
 {
 	struct property *prop;
@@ -577,7 +728,7 @@ static void check_ranges_format(struct check *c, struct node *dt,
 		return;
 
 	if (!node->parent) {
-		FAIL(c, "Root node has a \"ranges\" property");
+		FAIL_PROP(c, dti, node, prop, "Root node has a \"ranges\" property");
 		return;
 	}
 
@@ -589,28 +740,237 @@ static void check_ranges_format(struct check *c, struct node *dt,
 
 	if (prop->val.len == 0) {
 		if (p_addr_cells != c_addr_cells)
-			FAIL(c, "%s has empty \"ranges\" property but its "
-			     "#address-cells (%d) differs from %s (%d)",
-			     node->fullpath, c_addr_cells, node->parent->fullpath,
-			     p_addr_cells);
+			FAIL_PROP(c, dti, node, prop, "empty \"ranges\" property but its "
+				  "#address-cells (%d) differs from %s (%d)",
+				  c_addr_cells, node->parent->fullpath,
+				  p_addr_cells);
 		if (p_size_cells != c_size_cells)
-			FAIL(c, "%s has empty \"ranges\" property but its "
-			     "#size-cells (%d) differs from %s (%d)",
-			     node->fullpath, c_size_cells, node->parent->fullpath,
-			     p_size_cells);
+			FAIL_PROP(c, dti, node, prop, "empty \"ranges\" property but its "
+				  "#size-cells (%d) differs from %s (%d)",
+				  c_size_cells, node->parent->fullpath,
+				  p_size_cells);
 	} else if ((prop->val.len % entrylen) != 0) {
-		FAIL(c, "\"ranges\" property in %s has invalid length (%d bytes) "
-		     "(parent #address-cells == %d, child #address-cells == %d, "
-		     "#size-cells == %d)", node->fullpath, prop->val.len,
-		     p_addr_cells, c_addr_cells, c_size_cells);
+		FAIL_PROP(c, dti, node, prop, "\"ranges\" property has invalid length (%d bytes) "
+			  "(parent #address-cells == %d, child #address-cells == %d, "
+			  "#size-cells == %d)", prop->val.len,
+			  p_addr_cells, c_addr_cells, c_size_cells);
+	}
+}
+WARNING(ranges_format, check_ranges_format, NULL, &addr_size_cells);
+
+static const struct bus_type pci_bus = {
+	.name = "PCI",
+};
+
+static void check_pci_bridge(struct check *c, struct dt_info *dti, struct node *node)
+{
+	struct property *prop;
+	cell_t *cells;
+
+	prop = get_property(node, "device_type");
+	if (!prop || !streq(prop->val.val, "pci"))
+		return;
+
+	node->bus = &pci_bus;
+
+	if (!strprefixeq(node->name, node->basenamelen, "pci") &&
+	    !strprefixeq(node->name, node->basenamelen, "pcie"))
+		FAIL(c, dti, node, "node name is not \"pci\" or \"pcie\"");
+
+	prop = get_property(node, "ranges");
+	if (!prop)
+		FAIL(c, dti, node, "missing ranges for PCI bridge (or not a bridge)");
+
+	if (node_addr_cells(node) != 3)
+		FAIL(c, dti, node, "incorrect #address-cells for PCI bridge");
+	if (node_size_cells(node) != 2)
+		FAIL(c, dti, node, "incorrect #size-cells for PCI bridge");
+
+	prop = get_property(node, "bus-range");
+	if (!prop)
+		return;
+
+	if (prop->val.len != (sizeof(cell_t) * 2)) {
+		FAIL_PROP(c, dti, node, prop, "value must be 2 cells");
+		return;
+	}
+	cells = (cell_t *)prop->val.val;
+	if (fdt32_to_cpu(cells[0]) > fdt32_to_cpu(cells[1]))
+		FAIL_PROP(c, dti, node, prop, "1st cell must be less than or equal to 2nd cell");
+	if (fdt32_to_cpu(cells[1]) > 0xff)
+		FAIL_PROP(c, dti, node, prop, "maximum bus number must be less than 256");
+}
+WARNING(pci_bridge, check_pci_bridge, NULL,
+	&device_type_is_string, &addr_size_cells);
+
+static void check_pci_device_bus_num(struct check *c, struct dt_info *dti, struct node *node)
+{
+	struct property *prop;
+	unsigned int bus_num, min_bus, max_bus;
+	cell_t *cells;
+
+	if (!node->parent || (node->parent->bus != &pci_bus))
+		return;
+
+	prop = get_property(node, "reg");
+	if (!prop)
+		return;
+
+	cells = (cell_t *)prop->val.val;
+	bus_num = (fdt32_to_cpu(cells[0]) & 0x00ff0000) >> 16;
+
+	prop = get_property(node->parent, "bus-range");
+	if (!prop) {
+		min_bus = max_bus = 0;
+	} else {
+		cells = (cell_t *)prop->val.val;
+		min_bus = fdt32_to_cpu(cells[0]);
+		max_bus = fdt32_to_cpu(cells[0]);
+	}
+	if ((bus_num < min_bus) || (bus_num > max_bus))
+		FAIL_PROP(c, dti, node, prop, "PCI bus number %d out of range, expected (%d - %d)",
+			  bus_num, min_bus, max_bus);
+}
+WARNING(pci_device_bus_num, check_pci_device_bus_num, NULL, &reg_format, &pci_bridge);
+
+static void check_pci_device_reg(struct check *c, struct dt_info *dti, struct node *node)
+{
+	struct property *prop;
+	const char *unitname = get_unitname(node);
+	char unit_addr[5];
+	unsigned int dev, func, reg;
+	cell_t *cells;
+
+	if (!node->parent || (node->parent->bus != &pci_bus))
+		return;
+
+	prop = get_property(node, "reg");
+	if (!prop) {
+		FAIL(c, dti, node, "missing PCI reg property");
+		return;
+	}
+
+	cells = (cell_t *)prop->val.val;
+	if (cells[1] || cells[2])
+		FAIL_PROP(c, dti, node, prop, "PCI reg config space address cells 2 and 3 must be 0");
+
+	reg = fdt32_to_cpu(cells[0]);
+	dev = (reg & 0xf800) >> 11;
+	func = (reg & 0x700) >> 8;
+
+	if (reg & 0xff000000)
+		FAIL_PROP(c, dti, node, prop, "PCI reg address is not configuration space");
+	if (reg & 0x000000ff)
+		FAIL_PROP(c, dti, node, prop, "PCI reg config space address register number must be 0");
+
+	if (func == 0) {
+		snprintf(unit_addr, sizeof(unit_addr), "%x", dev);
+		if (streq(unitname, unit_addr))
+			return;
+	}
+
+	snprintf(unit_addr, sizeof(unit_addr), "%x,%x", dev, func);
+	if (streq(unitname, unit_addr))
+		return;
+
+	FAIL(c, dti, node, "PCI unit address format error, expected \"%s\"",
+	     unit_addr);
+}
+WARNING(pci_device_reg, check_pci_device_reg, NULL, &reg_format, &pci_bridge);
+
+static const struct bus_type simple_bus = {
+	.name = "simple-bus",
+};
+
+static bool node_is_compatible(struct node *node, const char *compat)
+{
+	struct property *prop;
+	const char *str, *end;
+
+	prop = get_property(node, "compatible");
+	if (!prop)
+		return false;
+
+	for (str = prop->val.val, end = str + prop->val.len; str < end;
+	     str += strnlen(str, end - str) + 1) {
+		if (strprefixeq(str, end - str, compat))
+			return true;
 	}
+	return false;
+}
+
+static void check_simple_bus_bridge(struct check *c, struct dt_info *dti, struct node *node)
+{
+	if (node_is_compatible(node, "simple-bus"))
+		node->bus = &simple_bus;
 }
-NODE_WARNING(ranges_format, NULL, &addr_size_cells);
+WARNING(simple_bus_bridge, check_simple_bus_bridge, NULL, &addr_size_cells);
+
+static void check_simple_bus_reg(struct check *c, struct dt_info *dti, struct node *node)
+{
+	struct property *prop;
+	const char *unitname = get_unitname(node);
+	char unit_addr[17];
+	unsigned int size;
+	uint64_t reg = 0;
+	cell_t *cells = NULL;
+
+	if (!node->parent || (node->parent->bus != &simple_bus))
+		return;
+
+	prop = get_property(node, "reg");
+	if (prop)
+		cells = (cell_t *)prop->val.val;
+	else {
+		prop = get_property(node, "ranges");
+		if (prop && prop->val.len)
+			/* skip of child address */
+			cells = ((cell_t *)prop->val.val) + node_addr_cells(node);
+	}
+
+	if (!cells) {
+		if (node->parent->parent && !(node->bus == &simple_bus))
+			FAIL(c, dti, node, "missing or empty reg/ranges property");
+		return;
+	}
+
+	size = node_addr_cells(node->parent);
+	while (size--)
+		reg = (reg << 32) | fdt32_to_cpu(*(cells++));
+
+	snprintf(unit_addr, sizeof(unit_addr), "%"PRIx64, reg);
+	if (!streq(unitname, unit_addr))
+		FAIL(c, dti, node, "simple-bus unit address format error, expected \"%s\"",
+		     unit_addr);
+}
+WARNING(simple_bus_reg, check_simple_bus_reg, NULL, &reg_format, &simple_bus_bridge);
+
+static void check_unit_address_format(struct check *c, struct dt_info *dti,
+				      struct node *node)
+{
+	const char *unitname = get_unitname(node);
+
+	if (node->parent && node->parent->bus)
+		return;
+
+	if (!unitname[0])
+		return;
+
+	if (!strncmp(unitname, "0x", 2)) {
+		FAIL(c, dti, node, "unit name should not have leading \"0x\"");
+		/* skip over 0x for next test */
+		unitname += 2;
+	}
+	if (unitname[0] == '0' && isxdigit(unitname[1]))
+		FAIL(c, dti, node, "unit name should not have leading 0s");
+}
+WARNING(unit_address_format, check_unit_address_format, NULL,
+	&node_name_format, &pci_bridge, &simple_bus_bridge);
 
 /*
  * Style checks
  */
-static void check_avoid_default_addr_size(struct check *c, struct node *dt,
+static void check_avoid_default_addr_size(struct check *c, struct dt_info *dti,
 					  struct node *node)
 {
 	struct property *reg, *ranges;
@@ -625,31 +985,377 @@ static void check_avoid_default_addr_size(struct check *c, struct node *dt,
 		return;
 
 	if (node->parent->addr_cells == -1)
-		FAIL(c, "Relying on default #address-cells value for %s",
-		     node->fullpath);
+		FAIL(c, dti, node, "Relying on default #address-cells value");
 
 	if (node->parent->size_cells == -1)
-		FAIL(c, "Relying on default #size-cells value for %s",
-		     node->fullpath);
+		FAIL(c, dti, node, "Relying on default #size-cells value");
+}
+WARNING(avoid_default_addr_size, check_avoid_default_addr_size, NULL,
+	&addr_size_cells);
+
+static void check_avoid_unnecessary_addr_size(struct check *c, struct dt_info *dti,
+					      struct node *node)
+{
+	struct property *prop;
+	struct node *child;
+	bool has_reg = false;
+
+	if (!node->parent || node->addr_cells < 0 || node->size_cells < 0)
+		return;
+
+	if (get_property(node, "ranges") || !node->children)
+		return;
+
+	for_each_child(node, child) {
+		prop = get_property(child, "reg");
+		if (prop)
+			has_reg = true;
+	}
+
+	if (!has_reg)
+		FAIL(c, dti, node, "unnecessary #address-cells/#size-cells without \"ranges\" or child \"reg\" property");
 }
-NODE_WARNING(avoid_default_addr_size, NULL, &addr_size_cells);
+WARNING(avoid_unnecessary_addr_size, check_avoid_unnecessary_addr_size, NULL, &avoid_default_addr_size);
 
 static void check_obsolete_chosen_interrupt_controller(struct check *c,
-						       struct node *dt)
+						       struct dt_info *dti,
+						       struct node *node)
 {
+	struct node *dt = dti->dt;
 	struct node *chosen;
 	struct property *prop;
 
+	if (node != dt)
+		return;
+
+
 	chosen = get_node_by_path(dt, "/chosen");
 	if (!chosen)
 		return;
 
 	prop = get_property(chosen, "interrupt-controller");
 	if (prop)
-		FAIL(c, "/chosen has obsolete \"interrupt-controller\" "
-		     "property");
+		FAIL_PROP(c, dti, node, prop,
+			  "/chosen has obsolete \"interrupt-controller\" property");
+}
+WARNING(obsolete_chosen_interrupt_controller,
+	check_obsolete_chosen_interrupt_controller, NULL);
+
+static void check_chosen_node_is_root(struct check *c, struct dt_info *dti,
+				      struct node *node)
+{
+	if (!streq(node->name, "chosen"))
+		return;
+
+	if (node->parent != dti->dt)
+		FAIL(c, dti, node, "chosen node must be at root node");
 }
-TREE_WARNING(obsolete_chosen_interrupt_controller, NULL);
+WARNING(chosen_node_is_root, check_chosen_node_is_root, NULL);
+
+static void check_chosen_node_bootargs(struct check *c, struct dt_info *dti,
+				       struct node *node)
+{
+	struct property *prop;
+
+	if (!streq(node->name, "chosen"))
+		return;
+
+	prop = get_property(node, "bootargs");
+	if (!prop)
+		return;
+
+	c->data = prop->name;
+	check_is_string(c, dti, node);
+}
+WARNING(chosen_node_bootargs, check_chosen_node_bootargs, NULL);
+
+static void check_chosen_node_stdout_path(struct check *c, struct dt_info *dti,
+					  struct node *node)
+{
+	struct property *prop;
+
+	if (!streq(node->name, "chosen"))
+		return;
+
+	prop = get_property(node, "stdout-path");
+	if (!prop) {
+		prop = get_property(node, "linux,stdout-path");
+		if (!prop)
+			return;
+		FAIL_PROP(c, dti, node, prop, "Use 'stdout-path' instead");
+	}
+
+	c->data = prop->name;
+	check_is_string(c, dti, node);
+}
+WARNING(chosen_node_stdout_path, check_chosen_node_stdout_path, NULL);
+
+struct provider {
+	const char *prop_name;
+	const char *cell_name;
+	bool optional;
+};
+
+static void check_property_phandle_args(struct check *c,
+					  struct dt_info *dti,
+				          struct node *node,
+				          struct property *prop,
+				          const struct provider *provider)
+{
+	struct node *root = dti->dt;
+	int cell, cellsize = 0;
+
+	if (prop->val.len % sizeof(cell_t)) {
+		FAIL_PROP(c, dti, node, prop,
+			  "property size (%d) is invalid, expected multiple of %zu",
+			  prop->val.len, sizeof(cell_t));
+		return;
+	}
+
+	for (cell = 0; cell < prop->val.len / sizeof(cell_t); cell += cellsize + 1) {
+		struct node *provider_node;
+		struct property *cellprop;
+		int phandle;
+
+		phandle = propval_cell_n(prop, cell);
+		/*
+		 * Some bindings use a cell value 0 or -1 to skip over optional
+		 * entries when each index position has a specific definition.
+		 */
+		if (phandle == 0 || phandle == -1) {
+			/* Give up if this is an overlay with external references */
+			if (dti->dtsflags & DTSF_PLUGIN)
+				break;
+
+			cellsize = 0;
+			continue;
+		}
+
+		/* If we have markers, verify the current cell is a phandle */
+		if (prop->val.markers) {
+			struct marker *m = prop->val.markers;
+			for_each_marker_of_type(m, REF_PHANDLE) {
+				if (m->offset == (cell * sizeof(cell_t)))
+					break;
+			}
+			if (!m)
+				FAIL_PROP(c, dti, node, prop,
+					  "cell %d is not a phandle reference",
+					  cell);
+		}
+
+		provider_node = get_node_by_phandle(root, phandle);
+		if (!provider_node) {
+			FAIL_PROP(c, dti, node, prop,
+				  "Could not get phandle node for (cell %d)",
+				  cell);
+			break;
+		}
+
+		cellprop = get_property(provider_node, provider->cell_name);
+		if (cellprop) {
+			cellsize = propval_cell(cellprop);
+		} else if (provider->optional) {
+			cellsize = 0;
+		} else {
+			FAIL(c, dti, node, "Missing property '%s' in node %s or bad phandle (referred from %s[%d])",
+			     provider->cell_name,
+			     provider_node->fullpath,
+			     prop->name, cell);
+			break;
+		}
+
+		if (prop->val.len < ((cell + cellsize + 1) * sizeof(cell_t))) {
+			FAIL_PROP(c, dti, node, prop,
+				  "property size (%d) too small for cell size %d",
+				  prop->val.len, cellsize);
+		}
+	}
+}
+
+static void check_provider_cells_property(struct check *c,
+					  struct dt_info *dti,
+				          struct node *node)
+{
+	struct provider *provider = c->data;
+	struct property *prop;
+
+	prop = get_property(node, provider->prop_name);
+	if (!prop)
+		return;
+
+	check_property_phandle_args(c, dti, node, prop, provider);
+}
+#define WARNING_PROPERTY_PHANDLE_CELLS(nm, propname, cells_name, ...) \
+	static struct provider nm##_provider = { (propname), (cells_name), __VA_ARGS__ }; \
+	WARNING(nm##_property, check_provider_cells_property, &nm##_provider, &phandle_references);
+
+WARNING_PROPERTY_PHANDLE_CELLS(clocks, "clocks", "#clock-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(cooling_device, "cooling-device", "#cooling-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(dmas, "dmas", "#dma-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(hwlocks, "hwlocks", "#hwlock-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(interrupts_extended, "interrupts-extended", "#interrupt-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(io_channels, "io-channels", "#io-channel-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(iommus, "iommus", "#iommu-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(mboxes, "mboxes", "#mbox-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(msi_parent, "msi-parent", "#msi-cells", true);
+WARNING_PROPERTY_PHANDLE_CELLS(mux_controls, "mux-controls", "#mux-control-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(phys, "phys", "#phy-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(power_domains, "power-domains", "#power-domain-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(pwms, "pwms", "#pwm-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(resets, "resets", "#reset-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(sound_dai, "sound-dai", "#sound-dai-cells");
+WARNING_PROPERTY_PHANDLE_CELLS(thermal_sensors, "thermal-sensors", "#thermal-sensor-cells");
+
+static bool prop_is_gpio(struct property *prop)
+{
+	char *str;
+
+	/*
+	 * *-gpios and *-gpio can appear in property names,
+	 * so skip over any false matches (only one known ATM)
+	 */
+	if (strstr(prop->name, "nr-gpio"))
+		return false;
+
+	str = strrchr(prop->name, '-');
+	if (str)
+		str++;
+	else
+		str = prop->name;
+	if (!(streq(str, "gpios") || streq(str, "gpio")))
+		return false;
+
+	return true;
+}
+
+static void check_gpios_property(struct check *c,
+					  struct dt_info *dti,
+				          struct node *node)
+{
+	struct property *prop;
+
+	/* Skip GPIO hog nodes which have 'gpios' property */
+	if (get_property(node, "gpio-hog"))
+		return;
+
+	for_each_property(node, prop) {
+		struct provider provider;
+
+		if (!prop_is_gpio(prop))
+			continue;
+
+		provider.prop_name = prop->name;
+		provider.cell_name = "#gpio-cells";
+		provider.optional = false;
+		check_property_phandle_args(c, dti, node, prop, &provider);
+	}
+
+}
+WARNING(gpios_property, check_gpios_property, NULL, &phandle_references);
+
+static void check_deprecated_gpio_property(struct check *c,
+					   struct dt_info *dti,
+				           struct node *node)
+{
+	struct property *prop;
+
+	for_each_property(node, prop) {
+		char *str;
+
+		if (!prop_is_gpio(prop))
+			continue;
+
+		str = strstr(prop->name, "gpio");
+		if (!streq(str, "gpio"))
+			continue;
+
+		FAIL_PROP(c, dti, node, prop,
+			  "'[*-]gpio' is deprecated, use '[*-]gpios' instead");
+	}
+
+}
+CHECK(deprecated_gpio_property, check_deprecated_gpio_property, NULL);
+
+static bool node_is_interrupt_provider(struct node *node)
+{
+	struct property *prop;
+
+	prop = get_property(node, "interrupt-controller");
+	if (prop)
+		return true;
+
+	prop = get_property(node, "interrupt-map");
+	if (prop)
+		return true;
+
+	return false;
+}
+static void check_interrupts_property(struct check *c,
+				      struct dt_info *dti,
+				      struct node *node)
+{
+	struct node *root = dti->dt;
+	struct node *irq_node = NULL, *parent = node;
+	struct property *irq_prop, *prop = NULL;
+	int irq_cells, phandle;
+
+	irq_prop = get_property(node, "interrupts");
+	if (!irq_prop)
+		return;
+
+	if (irq_prop->val.len % sizeof(cell_t))
+		FAIL_PROP(c, dti, node, irq_prop, "size (%d) is invalid, expected multiple of %zu",
+		     irq_prop->val.len, sizeof(cell_t));
+
+	while (parent && !prop) {
+		if (parent != node && node_is_interrupt_provider(parent)) {
+			irq_node = parent;
+			break;
+		}
+
+		prop = get_property(parent, "interrupt-parent");
+		if (prop) {
+			phandle = propval_cell(prop);
+			/* Give up if this is an overlay with external references */
+			if ((phandle == 0 || phandle == -1) &&
+			    (dti->dtsflags & DTSF_PLUGIN))
+					return;
+
+			irq_node = get_node_by_phandle(root, phandle);
+			if (!irq_node) {
+				FAIL_PROP(c, dti, parent, prop, "Bad phandle");
+				return;
+			}
+			if (!node_is_interrupt_provider(irq_node))
+				FAIL(c, dti, irq_node,
+				     "Missing interrupt-controller or interrupt-map property");
+
+			break;
+		}
+
+		parent = parent->parent;
+	}
+
+	if (!irq_node) {
+		FAIL(c, dti, node, "Missing interrupt-parent");
+		return;
+	}
+
+	prop = get_property(irq_node, "#interrupt-cells");
+	if (!prop) {
+		FAIL(c, dti, irq_node, "Missing #interrupt-cells in interrupt-parent");
+		return;
+	}
+
+	irq_cells = propval_cell(prop);
+	if (irq_prop->val.len % (irq_cells * sizeof(cell_t))) {
+		FAIL_PROP(c, dti, node, prop,
+			  "size is (%d), expected multiple of %d",
+			  irq_prop->val.len, (int)(irq_cells * sizeof(cell_t)));
+	}
+}
+WARNING(interrupts_property, check_interrupts_property, &phandle_references);
 
 static struct check *check_table[] = {
 	&duplicate_node_names, &duplicate_property_names,
@@ -663,11 +1369,52 @@ static struct check *check_table[] = {
 
 	&address_cells_is_cell, &size_cells_is_cell, &interrupt_cells_is_cell,
 	&device_type_is_string, &model_is_string, &status_is_string,
+	&label_is_string,
+
+	&compatible_is_string_list, &names_is_string_list,
+
+	&property_name_chars_strict,
+	&node_name_chars_strict,
 
 	&addr_size_cells, &reg_format, &ranges_format,
 
+	&unit_address_vs_reg,
+	&unit_address_format,
+
+	&pci_bridge,
+	&pci_device_reg,
+	&pci_device_bus_num,
+
+	&simple_bus_bridge,
+	&simple_bus_reg,
+
 	&avoid_default_addr_size,
+	&avoid_unnecessary_addr_size,
 	&obsolete_chosen_interrupt_controller,
+	&chosen_node_is_root, &chosen_node_bootargs, &chosen_node_stdout_path,
+
+	&clocks_property,
+	&cooling_device_property,
+	&dmas_property,
+	&hwlocks_property,
+	&interrupts_extended_property,
+	&io_channels_property,
+	&iommus_property,
+	&mboxes_property,
+	&msi_parent_property,
+	&mux_controls_property,
+	&phys_property,
+	&power_domains_property,
+	&pwms_property,
+	&resets_property,
+	&sound_dai_property,
+	&thermal_sensors_property,
+
+	&deprecated_gpio_property,
+	&gpios_property,
+	&interrupts_property,
+
+	&alias_paths,
 
 	&always_fail,
 };
@@ -733,9 +1480,8 @@ void parse_checks_option(bool warn, bool error, const char *arg)
 	die("Unrecognized check name \"%s\"\n", name);
 }
 
-void process_checks(bool force, struct boot_info *bi)
+void process_checks(bool force, struct dt_info *dti)
 {
-	struct node *dt = bi->dt;
 	int i;
 	int error = 0;
 
@@ -743,7 +1489,7 @@ void process_checks(bool force, struct boot_info *bi)
 		struct check *c = check_table[i];
 
 		if (c->warn || c->error)
-			error = error || run_check(c, dt);
+			error = error || run_check(c, dti);
 	}
 
 	if (error) {
diff --git a/scripts/dtc/data.c b/scripts/dtc/data.c
index 8cae237468..aa37a16c88 100644
--- a/scripts/dtc/data.c
+++ b/scripts/dtc/data.c
@@ -171,9 +171,9 @@ struct data data_merge(struct data d1, struct data d2)
 struct data data_append_integer(struct data d, uint64_t value, int bits)
 {
 	uint8_t value_8;
-	uint16_t value_16;
-	uint32_t value_32;
-	uint64_t value_64;
+	fdt16_t value_16;
+	fdt32_t value_32;
+	fdt64_t value_64;
 
 	switch (bits) {
 	case 8:
@@ -197,14 +197,14 @@ struct data data_append_integer(struct data d, uint64_t value, int bits)
 	}
 }
 
-struct data data_append_re(struct data d, const struct fdt_reserve_entry *re)
+struct data data_append_re(struct data d, uint64_t address, uint64_t size)
 {
-	struct fdt_reserve_entry bere;
+	struct fdt_reserve_entry re;
 
-	bere.address = cpu_to_fdt64(re->address);
-	bere.size = cpu_to_fdt64(re->size);
+	re.address = cpu_to_fdt64(address);
+	re.size = cpu_to_fdt64(size);
 
-	return data_append_data(d, &bere, sizeof(bere));
+	return data_append_data(d, &re, sizeof(re));
 }
 
 struct data data_append_cell(struct data d, cell_t word)
diff --git a/scripts/dtc/dtc-lexer.l b/scripts/dtc/dtc-lexer.l
index 0ee1caf03d..fd825ebba6 100644
--- a/scripts/dtc/dtc-lexer.l
+++ b/scripts/dtc/dtc-lexer.l
@@ -62,7 +62,8 @@ static int dts_version = 1;
 
 static void push_input_file(const char *filename);
 static bool pop_input_file(void);
-static void lexical_error(const char *fmt, ...);
+static void PRINTF(1, 2) lexical_error(const char *fmt, ...);
+
 %}
 
 %%
@@ -73,24 +74,32 @@ static void lexical_error(const char *fmt, ...);
 		}
 
 <*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t]+[0-9]+)? {
-			char *line, *tmp, *fn;
+			char *line, *fnstart, *fnend;
+			struct data fn;
 			/* skip text before line # */
 			line = yytext;
 			while (!isdigit((unsigned char)*line))
 				line++;
-			/* skip digits in line # */
-			tmp = line;
-			while (!isspace((unsigned char)*tmp))
-				tmp++;
-			/* "NULL"-terminate line # */
-			*tmp = '\0';
-			/* start of filename */
-			fn = strchr(tmp + 1, '"') + 1;
-			/* strip trailing " from filename */
-			tmp = strchr(fn, '"');
-			*tmp = 0;
+
+			/* regexp ensures that first and list "
+			 * in the whole yytext are those at
+			 * beginning and end of the filename string */
+			fnstart = memchr(yytext, '"', yyleng);
+			for (fnend = yytext + yyleng - 1;
+			     *fnend != '"'; fnend--)
+				;
+			assert(fnstart && fnend && (fnend > fnstart));
+
+			fn = data_copy_escape_string(fnstart + 1,
+						     fnend - fnstart - 1);
+
+			/* Don't allow nuls in filenames */
+			if (memchr(fn.val, '\0', fn.len - 1))
+				lexical_error("nul in line number directive");
+
 			/* -1 since #line is the number of the next line */
-			srcpos_set_line(xstrdup(fn), atoi(line) - 1);
+			srcpos_set_line(xstrdup(fn.val), atoi(line) - 1);
+			data_free(fn);
 		}
 
 <*><<EOF>>		{
@@ -113,6 +122,11 @@ static void lexical_error(const char *fmt, ...);
 			return DT_V1;
 		}
 
+<*>"/plugin/"	{
+			DPRINT("Keyword: /plugin/\n");
+			return DT_PLUGIN;
+		}
+
 <*>"/memreserve/"	{
 			DPRINT("Keyword: /memreserve/\n");
 			BEGIN_DEFAULT();
@@ -153,7 +167,10 @@ static void lexical_error(const char *fmt, ...);
 			errno = 0;
 			yylval.integer = strtoull(yytext, &e, 0);
 
-			assert(!(*e) || !e[strspn(e, "UL")]);
+			if (*e && e[strspn(e, "UL")]) {
+				lexical_error("Bad integer literal '%s'",
+					      yytext);
+			}
 
 			if (errno == ERANGE)
 				lexical_error("Integer literal '%s' out of range",
@@ -173,16 +190,16 @@ static void lexical_error(const char *fmt, ...);
 			if (d.len == 1) {
 				lexical_error("Empty character literal");
 				yylval.integer = 0;
-				return DT_CHAR_LITERAL;
-			}
-
-			yylval.integer = (unsigned char)d.val[0];
+			} else {
+				yylval.integer = (unsigned char)d.val[0];
 
-			if (d.len > 2)
-				lexical_error("Character literal has %d"
-					      " characters instead of 1",
-					      d.len - 1);
+				if (d.len > 2)
+					lexical_error("Character literal has %d"
+						      " characters instead of 1",
+						      d.len - 1);
+			}
 
+			data_free(d);
 			return DT_CHAR_LITERAL;
 		}
 
diff --git a/scripts/dtc/dtc-lexer.lex.c_shipped b/scripts/dtc/dtc-lexer.lex.c_shipped
index 11cd78e723..f032b24b2d 100644
--- a/scripts/dtc/dtc-lexer.lex.c_shipped
+++ b/scripts/dtc/dtc-lexer.lex.c_shipped
@@ -1,6 +1,6 @@
-#line 2 "dtc-lexer.lex.c"
+#line 2 "dtc-lexer.l.c"
 
-#line 4 "dtc-lexer.lex.c"
+#line 4 "dtc-lexer.l.c"
 
 #define  YY_INT_ALIGNED short int
 
@@ -8,8 +8,8 @@
 
 #define FLEX_SCANNER
 #define YY_FLEX_MAJOR_VERSION 2
-#define YY_FLEX_MINOR_VERSION 5
-#define YY_FLEX_SUBMINOR_VERSION 39
+#define YY_FLEX_MINOR_VERSION 6
+#define YY_FLEX_SUBMINOR_VERSION 4
 #if YY_FLEX_SUBMINOR_VERSION > 0
 #define FLEX_BETA
 #endif
@@ -84,60 +84,48 @@ typedef unsigned int flex_uint32_t;
 #define UINT32_MAX             (4294967295U)
 #endif
 
+#ifndef SIZE_MAX
+#define SIZE_MAX               (~(size_t)0)
+#endif
+
 #endif /* ! C99 */
 
 #endif /* ! FLEXINT_H */
 
-#ifdef __cplusplus
-
-/* The "const" storage-class-modifier is valid. */
-#define YY_USE_CONST
-
-#else	/* ! __cplusplus */
-
-/* C99 requires __STDC__ to be defined as 1. */
-#if defined (__STDC__)
-
-#define YY_USE_CONST
+/* begin standard C++ headers. */
 
-#endif	/* defined (__STDC__) */
-#endif	/* ! __cplusplus */
-
-#ifdef YY_USE_CONST
+/* TODO: this is always defined, so inline it */
 #define yyconst const
+
+#if defined(__GNUC__) && __GNUC__ >= 3
+#define yynoreturn __attribute__((__noreturn__))
 #else
-#define yyconst
+#define yynoreturn
 #endif
 
 /* Returned upon end-of-file. */
 #define YY_NULL 0
 
-/* Promotes a possibly negative, possibly signed char to an unsigned
- * integer for use as an array index.  If the signed char is negative,
- * we want to instead treat it as an 8-bit unsigned char, hence the
- * double cast.
+/* Promotes a possibly negative, possibly signed char to an
+ *   integer in range [0..255] for use as an array index.
  */
-#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
+#define YY_SC_TO_UI(c) ((YY_CHAR) (c))
 
 /* Enter a start condition.  This macro really ought to take a parameter,
  * but we do it the disgusting crufty way forced on us by the ()-less
  * definition of BEGIN.
  */
 #define BEGIN (yy_start) = 1 + 2 *
-
 /* Translate the current start state into a value that can be later handed
  * to BEGIN to return to the state.  The YYSTATE alias is for lex
  * compatibility.
  */
 #define YY_START (((yy_start) - 1) / 2)
 #define YYSTATE YY_START
-
 /* Action number for EOF rule of a given start state. */
 #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
-
 /* Special action meaning "start processing a new file". */
-#define YY_NEW_FILE yyrestart(yyin  )
-
+#define YY_NEW_FILE yyrestart( yyin  )
 #define YY_END_OF_BUFFER_CHAR 0
 
 /* Size of default input buffer. */
@@ -167,14 +155,14 @@ typedef struct yy_buffer_state *YY_BUFFER_STATE;
 typedef size_t yy_size_t;
 #endif
 
-extern yy_size_t yyleng;
+extern int yyleng;
 
 extern FILE *yyin, *yyout;
 
 #define EOB_ACT_CONTINUE_SCAN 0
 #define EOB_ACT_END_OF_FILE 1
 #define EOB_ACT_LAST_MATCH 2
-
+    
     #define YY_LESS_LINENO(n)
     #define YY_LINENO_REWIND_TO(ptr)
     
@@ -191,7 +179,6 @@ extern FILE *yyin, *yyout;
 		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
 		} \
 	while ( 0 )
-
 #define unput(c) yyunput( c, (yytext_ptr)  )
 
 #ifndef YY_STRUCT_YY_BUFFER_STATE
@@ -206,12 +193,12 @@ struct yy_buffer_state
 	/* Size of input buffer in bytes, not including room for EOB
 	 * characters.
 	 */
-	yy_size_t yy_buf_size;
+	int yy_buf_size;
 
 	/* Number of characters read into yy_ch_buf, not including EOB
 	 * characters.
 	 */
-	yy_size_t yy_n_chars;
+	int yy_n_chars;
 
 	/* Whether we "own" the buffer - i.e., we know we created it,
 	 * and can realloc() it to grow it, and should free() it to
@@ -234,7 +221,7 @@ struct yy_buffer_state
 
     int yy_bs_lineno; /**< The line count. */
     int yy_bs_column; /**< The column count. */
-    
+
 	/* Whether to try to fill the input buffer when we reach the
 	 * end of it.
 	 */
@@ -262,7 +249,7 @@ struct yy_buffer_state
 /* Stack of input buffers. */
 static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */
 static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */
-static YY_BUFFER_STATE * yy_buffer_stack = 0; /**< Stack as an array. */
+static YY_BUFFER_STATE * yy_buffer_stack = NULL; /**< Stack as an array. */
 
 /* We provide macros for accessing buffer states in case in the
  * future we want to put the buffer states in a more general
@@ -273,7 +260,6 @@ static YY_BUFFER_STATE * yy_buffer_stack = 0; /**< Stack as an array. */
 #define YY_CURRENT_BUFFER ( (yy_buffer_stack) \
                           ? (yy_buffer_stack)[(yy_buffer_stack_top)] \
                           : NULL)
-
 /* Same as previous macro, but useful when we know that the buffer stack is not
  * NULL or when we need an lvalue. For internal use only.
  */
@@ -281,11 +267,11 @@ static YY_BUFFER_STATE * yy_buffer_stack = 0; /**< Stack as an array. */
 
 /* yy_hold_char holds the character lost when yytext is formed. */
 static char yy_hold_char;
-static yy_size_t yy_n_chars;		/* number of characters read into yy_ch_buf */
-yy_size_t yyleng;
+static int yy_n_chars;		/* number of characters read into yy_ch_buf */
+int yyleng;
 
 /* Points to current character in buffer. */
-static char *yy_c_buf_p = (char *) 0;
+static char *yy_c_buf_p = NULL;
 static int yy_init = 0;		/* whether we need to initialize */
 static int yy_start = 0;	/* start state number */
 
@@ -294,87 +280,83 @@ static int yy_start = 0;	/* start state number */
  */
 static int yy_did_buffer_switch_on_eof;
 
-void yyrestart (FILE *input_file  );
-void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer  );
-YY_BUFFER_STATE yy_create_buffer (FILE *file,int size  );
-void yy_delete_buffer (YY_BUFFER_STATE b  );
-void yy_flush_buffer (YY_BUFFER_STATE b  );
-void yypush_buffer_state (YY_BUFFER_STATE new_buffer  );
-void yypop_buffer_state (void );
-
-static void yyensure_buffer_stack (void );
-static void yy_load_buffer_state (void );
-static void yy_init_buffer (YY_BUFFER_STATE b,FILE *file  );
+void yyrestart ( FILE *input_file  );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer  );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size  );
+void yy_delete_buffer ( YY_BUFFER_STATE b  );
+void yy_flush_buffer ( YY_BUFFER_STATE b  );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer  );
+void yypop_buffer_state ( void );
 
-#define YY_FLUSH_BUFFER yy_flush_buffer(YY_CURRENT_BUFFER )
+static void yyensure_buffer_stack ( void );
+static void yy_load_buffer_state ( void );
+static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file  );
+#define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER )
 
-YY_BUFFER_STATE yy_scan_buffer (char *base,yy_size_t size  );
-YY_BUFFER_STATE yy_scan_string (yyconst char *yy_str  );
-YY_BUFFER_STATE yy_scan_bytes (yyconst char *bytes,yy_size_t len  );
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size  );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str  );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len  );
 
-void *yyalloc (yy_size_t  );
-void *yyrealloc (void *,yy_size_t  );
-void yyfree (void *  );
+void *yyalloc ( yy_size_t  );
+void *yyrealloc ( void *, yy_size_t  );
+void yyfree ( void *  );
 
 #define yy_new_buffer yy_create_buffer
-
 #define yy_set_interactive(is_interactive) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){ \
         yyensure_buffer_stack (); \
 		YY_CURRENT_BUFFER_LVALUE =    \
-            yy_create_buffer(yyin,YY_BUF_SIZE ); \
+            yy_create_buffer( yyin, YY_BUF_SIZE ); \
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
 	}
-
 #define yy_set_bol(at_bol) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){\
         yyensure_buffer_stack (); \
 		YY_CURRENT_BUFFER_LVALUE =    \
-            yy_create_buffer(yyin,YY_BUF_SIZE ); \
+            yy_create_buffer( yyin, YY_BUF_SIZE ); \
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
 	}
-
 #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
 
 /* Begin user sect3 */
 
-#define yywrap() 1
+#define yywrap() (/*CONSTCOND*/1)
 #define YY_SKIP_YYWRAP
+typedef flex_uint8_t YY_CHAR;
 
-typedef unsigned char YY_CHAR;
-
-FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
+FILE *yyin = NULL, *yyout = NULL;
 
 typedef int yy_state_type;
 
 extern int yylineno;
-
 int yylineno = 1;
 
 extern char *yytext;
+#ifdef yytext_ptr
+#undef yytext_ptr
+#endif
 #define yytext_ptr yytext
 
-static yy_state_type yy_get_previous_state (void );
-static yy_state_type yy_try_NUL_trans (yy_state_type current_state  );
-static int yy_get_next_buffer (void );
-static void yy_fatal_error (yyconst char msg[]  );
+static yy_state_type yy_get_previous_state ( void );
+static yy_state_type yy_try_NUL_trans ( yy_state_type current_state  );
+static int yy_get_next_buffer ( void );
+static void yynoreturn yy_fatal_error ( const char* msg  );
 
 /* Done after the current pattern has been matched and before the
  * corresponding action - sets up yytext.
  */
 #define YY_DO_BEFORE_ACTION \
 	(yytext_ptr) = yy_bp; \
-	yyleng = (size_t) (yy_cp - yy_bp); \
+	yyleng = (int) (yy_cp - yy_bp); \
 	(yy_hold_char) = *yy_cp; \
 	*yy_cp = '\0'; \
 	(yy_c_buf_p) = yy_cp;
-
-#define YY_NUM_RULES 30
-#define YY_END_OF_BUFFER 31
+#define YY_NUM_RULES 31
+#define YY_END_OF_BUFFER 32
 /* This struct is not used in this scanner,
    but its presence is necessary. */
 struct yy_trans_info
@@ -382,28 +364,29 @@ struct yy_trans_info
 	flex_int32_t yy_verify;
 	flex_int32_t yy_nxt;
 	};
-static yyconst flex_int16_t yy_accept[159] =
+static const flex_int16_t yy_accept[166] =
     {   0,
-        0,    0,    0,    0,    0,    0,    0,    0,   31,   29,
-       18,   18,   29,   29,   29,   29,   29,   29,   29,   29,
-       29,   29,   29,   29,   29,   29,   15,   16,   16,   29,
-       16,   10,   10,   18,   26,    0,    3,    0,   27,   12,
-        0,    0,   11,    0,    0,    0,    0,    0,    0,    0,
-       21,   23,   25,   24,   22,    0,    9,   28,    0,    0,
-        0,   14,   14,   16,   16,   16,   10,   10,   10,    0,
-       12,    0,   11,    0,    0,    0,   20,    0,    0,    0,
-        0,    0,    0,    0,    0,   16,   10,   10,   10,    0,
-       13,   19,    0,    0,    0,    0,    0,    0,    0,    0,
-
-        0,   16,    0,    0,    0,    0,    0,    0,    0,    0,
-        0,   16,    6,    0,    0,    0,    0,    0,    0,    2,
-        0,    0,    0,    0,    0,    0,    0,    0,    4,   17,
-        0,    0,    2,    0,    0,    0,    0,    0,    0,    0,
-        0,    0,    0,    0,    0,    1,    0,    0,    0,    0,
-        5,    8,    0,    0,    0,    0,    7,    0
+        0,    0,    0,    0,    0,    0,    0,    0,   32,   30,
+       19,   19,   30,   30,   30,   30,   30,   30,   30,   30,
+       30,   30,   30,   30,   30,   30,   16,   17,   17,   30,
+       17,   11,   11,   19,   27,    0,    3,    0,   28,   13,
+        0,    0,   12,    0,    0,    0,    0,    0,    0,    0,
+        0,   22,   24,   26,   25,   23,    0,   10,   29,    0,
+        0,    0,   15,   15,   17,   17,   17,   11,   11,   11,
+        0,   13,    0,   12,    0,    0,    0,   21,    0,    0,
+        0,    0,    0,    0,    0,    0,    0,   17,   11,   11,
+       11,    0,   14,   20,    0,    0,    0,    0,    0,    0,
+
+        0,    0,    0,    0,   17,    0,    0,    0,    0,    0,
+        0,    0,    0,    0,    0,   17,    7,    0,    0,    0,
+        0,    0,    0,    0,    2,    0,    0,    0,    0,    0,
+        0,    0,    0,    0,    4,   18,    0,    0,    5,    2,
+        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
+        0,    0,    1,    0,    0,    0,    0,    6,    9,    0,
+        0,    0,    0,    8,    0
     } ;
 
-static yyconst flex_int32_t yy_ec[256] =
+static const YY_CHAR yy_ec[256] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
         4,    4,    4,    1,    1,    1,    1,    1,    1,    1,
@@ -416,9 +399,9 @@ static yyconst flex_int32_t yy_ec[256] =
        22,   22,   22,   22,   24,   22,   22,   25,   22,   22,
         1,   26,   27,    1,   22,    1,   21,   28,   29,   30,
 
-       31,   21,   22,   22,   32,   22,   22,   33,   34,   35,
-       36,   37,   22,   38,   39,   40,   41,   42,   22,   25,
-       43,   22,   44,   45,   46,    1,    1,    1,    1,    1,
+       31,   21,   32,   22,   33,   22,   22,   34,   35,   36,
+       37,   38,   22,   39,   40,   41,   42,   43,   22,   25,
+       44,   22,   45,   46,   47,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
@@ -435,163 +418,165 @@ static yyconst flex_int32_t yy_ec[256] =
         1,    1,    1,    1,    1
     } ;
 
-static yyconst flex_int32_t yy_meta[47] =
+static const YY_CHAR yy_meta[48] =
     {   0,
         1,    1,    1,    1,    1,    1,    2,    3,    1,    2,
         2,    2,    4,    5,    5,    5,    6,    1,    1,    1,
         7,    8,    8,    8,    8,    1,    1,    7,    7,    7,
         7,    8,    8,    8,    8,    8,    8,    8,    8,    8,
-        8,    8,    8,    3,    1,    4
+        8,    8,    8,    8,    3,    1,    4
     } ;
 
-static yyconst flex_int16_t yy_base[173] =
+static const flex_int16_t yy_base[180] =
     {   0,
-        0,  383,   34,  382,   65,  381,   37,  105,  387,  391,
-       54,  111,  367,  110,  109,  109,  112,   41,  366,  104,
-      367,  338,  124,  117,    0,  144,  391,    0,  121,    0,
-      135,  155,  140,  179,  391,  160,  391,  379,  391,    0,
-      368,  141,  391,  167,  370,  376,  346,  103,  342,  345,
-      391,  391,  391,  391,  391,  358,  391,  391,  175,  342,
-      338,  391,  355,    0,  185,  339,  184,  347,  346,    0,
-        0,  322,  175,  357,  175,  363,  352,  324,  330,  323,
-      332,  326,  201,  324,  329,  322,  391,  333,  181,  309,
-      391,  341,  340,  313,  320,  338,  178,  311,  146,  317,
-
-      314,  315,  335,  331,  303,  300,  309,  299,  308,  188,
-      336,  335,  391,  305,  320,  281,  283,  271,  203,  288,
-      281,  271,  266,  264,  245,  242,  208,  104,  391,  391,
-      244,  218,  204,  219,  206,  224,  201,  212,  204,  229,
-      215,  208,  207,  200,  219,  391,  233,  221,  200,  181,
-      391,  391,  149,  122,   86,   41,  391,  391,  245,  251,
-      259,  263,  267,  273,  280,  284,  292,  300,  304,  310,
-      318,  326
+        0,  393,   35,  392,   66,  391,   38,  107,  397,  401,
+       55,  113,  377,  112,  111,  111,  114,   42,  376,  106,
+      377,  347,  126,  120,    0,  147,  401,    0,  124,    0,
+      137,  158,  170,  163,  401,  153,  401,  389,  401,    0,
+      378,  120,  401,  131,  380,  386,  355,  139,  351,  355,
+      351,  401,  401,  401,  401,  401,  367,  401,  401,  185,
+      350,  346,  401,  364,    0,  185,  347,  189,  356,  355,
+        0,    0,  330,  180,  366,  141,  372,  361,  332,  338,
+      331,  341,  334,  326,  205,  331,  337,  329,  401,  341,
+      167,  316,  401,  349,  348,  320,  328,  346,  180,  318,
+
+      324,  209,  324,  320,  322,  342,  338,  309,  306,  315,
+      305,  315,  312,  192,  342,  341,  401,  293,  306,  282,
+      268,  252,  255,  203,  285,  282,  272,  268,  252,  233,
+      232,  239,  208,  107,  401,  401,  238,  211,  401,  211,
+      212,  208,  228,  203,  215,  207,  233,  222,  212,  211,
+      203,  227,  401,  237,  225,  204,  185,  401,  401,  149,
+      128,   88,   42,  401,  401,  253,  259,  267,  271,  275,
+      281,  288,  292,  300,  308,  312,  318,  326,  334
     } ;
 
-static yyconst flex_int16_t yy_def[173] =
+static const flex_int16_t yy_def[180] =
     {   0,
-      158,    1,    1,    3,  158,    5,    1,    1,  158,  158,
-      158,  158,  158,  159,  160,  161,  158,  158,  158,  158,
-      162,  158,  158,  158,  163,  162,  158,  164,  165,  164,
-      164,  158,  158,  158,  158,  159,  158,  159,  158,  166,
-      158,  161,  158,  161,  167,  168,  158,  158,  158,  158,
-      158,  158,  158,  158,  158,  162,  158,  158,  158,  158,
-      158,  158,  162,  164,  165,  164,  158,  158,  158,  169,
-      166,  170,  161,  167,  167,  168,  158,  158,  158,  158,
-      158,  158,  158,  158,  158,  164,  158,  158,  169,  170,
-      158,  158,  158,  158,  158,  158,  158,  158,  158,  158,
-
-      158,  164,  158,  158,  158,  158,  158,  158,  158,  171,
-      158,  164,  158,  158,  158,  158,  158,  158,  171,  158,
-      171,  158,  158,  158,  158,  158,  158,  158,  158,  158,
-      158,  158,  158,  158,  158,  158,  158,  158,  158,  158,
-      172,  158,  158,  158,  172,  158,  172,  158,  158,  158,
-      158,  158,  158,  158,  158,  158,  158,    0,  158,  158,
-      158,  158,  158,  158,  158,  158,  158,  158,  158,  158,
-      158,  158
+      165,    1,    1,    3,  165,    5,    1,    1,  165,  165,
+      165,  165,  165,  166,  167,  168,  165,  165,  165,  165,
+      169,  165,  165,  165,  170,  169,  165,  171,  172,  171,
+      171,  165,  165,  165,  165,  166,  165,  166,  165,  173,
+      165,  168,  165,  168,  174,  175,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  169,  165,  165,  165,
+      165,  165,  165,  169,  171,  172,  171,  165,  165,  165,
+      176,  173,  177,  168,  174,  174,  175,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  171,  165,  165,
+      176,  177,  165,  165,  165,  165,  165,  165,  165,  165,
+
+      165,  165,  165,  165,  171,  165,  165,  165,  165,  165,
+      165,  165,  165,  178,  165,  171,  165,  165,  165,  165,
+      165,  165,  165,  178,  165,  178,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  179,  165,  165,
+      165,  179,  165,  179,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,    0,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165
     } ;
 
-static yyconst flex_int16_t yy_nxt[438] =
+static const flex_int16_t yy_nxt[449] =
     {   0,
        10,   11,   12,   11,   13,   14,   10,   15,   16,   10,
        10,   10,   17,   10,   10,   10,   10,   18,   19,   20,
        21,   21,   21,   21,   21,   10,   10,   21,   21,   21,
        21,   21,   21,   21,   21,   21,   21,   21,   21,   21,
-       21,   21,   21,   10,   22,   10,   24,   25,   25,   25,
-       32,   33,   33,  157,   26,   34,   34,   34,   51,   52,
-       27,   26,   26,   26,   26,   10,   11,   12,   11,   13,
-       14,   28,   15,   16,   28,   28,   28,   24,   28,   28,
-       28,   10,   18,   19,   20,   29,   29,   29,   29,   29,
-       30,   10,   29,   29,   29,   29,   29,   29,   29,   29,
-
-       29,   29,   29,   29,   29,   29,   29,   29,   10,   22,
-       10,   23,   34,   34,   34,   37,   39,   43,   32,   33,
-       33,   45,   54,   55,   46,   59,   45,   64,  156,   46,
-       64,   64,   64,   79,   44,   38,   59,   57,  134,   47,
-      135,   48,   80,   49,   47,   50,   48,   99,   61,   43,
-       50,  110,   41,   67,   67,   67,   60,   63,   63,   63,
-       57,  155,   68,   69,   63,   37,   44,   66,   67,   67,
-       67,   63,   63,   63,   63,   73,   59,   68,   69,   70,
-       34,   34,   34,   43,   75,   38,  154,   92,   83,   83,
-       83,   64,   44,  120,   64,   64,   64,   67,   67,   67,
-
-       44,   57,   99,   68,   69,  107,   68,   69,  120,  127,
-      108,  153,  152,  121,   83,   83,   83,  133,  133,  133,
-      146,  133,  133,  133,  146,  140,  140,  140,  121,  141,
-      140,  140,  140,  151,  141,  158,  150,  149,  148,  144,
-      147,  143,  142,  139,  147,   36,   36,   36,   36,   36,
-       36,   36,   36,   40,  138,  137,  136,   40,   40,   42,
-       42,   42,   42,   42,   42,   42,   42,   56,   56,   56,
-       56,   62,  132,   62,   64,  131,  130,   64,  129,   64,
-       64,   65,  128,  158,   65,   65,   65,   65,   71,  127,
-       71,   71,   74,   74,   74,   74,   74,   74,   74,   74,
-
-       76,   76,   76,   76,   76,   76,   76,   76,   89,  126,
-       89,   90,  125,   90,   90,  124,   90,   90,  119,  119,
-      119,  119,  119,  119,  119,  119,  145,  145,  145,  145,
-      145,  145,  145,  145,  123,  122,   59,   59,  118,  117,
-      116,  115,  114,  113,   45,  112,  108,  111,  109,  106,
-      105,  104,   46,  103,   91,   87,  102,  101,  100,   98,
-       97,   96,   95,   94,   93,   77,   75,   91,   88,   87,
-       86,   57,   85,   84,   57,   82,   81,   78,   77,   75,
-       72,  158,   58,   57,   53,   35,  158,   31,   23,   23,
-        9,  158,  158,  158,  158,  158,  158,  158,  158,  158,
-
-      158,  158,  158,  158,  158,  158,  158,  158,  158,  158,
-      158,  158,  158,  158,  158,  158,  158,  158,  158,  158,
-      158,  158,  158,  158,  158,  158,  158,  158,  158,  158,
-      158,  158,  158,  158,  158,  158,  158
+       21,   21,   21,   21,   10,   22,   10,   24,   25,   25,
+       25,   32,   33,   33,  164,   26,   34,   34,   34,   52,
+       53,   27,   26,   26,   26,   26,   10,   11,   12,   11,
+       13,   14,   28,   15,   16,   28,   28,   28,   24,   28,
+       28,   28,   10,   18,   19,   20,   29,   29,   29,   29,
+       29,   30,   10,   29,   29,   29,   29,   29,   29,   29,
+
+       29,   29,   29,   29,   29,   29,   29,   29,   29,   29,
+       10,   22,   10,   23,   34,   34,   34,   37,   39,   43,
+       32,   33,   33,   45,   55,   56,   46,   60,   43,   45,
+       65,  163,   46,   65,   65,   65,   44,   38,   60,   74,
+       58,   47,  141,   48,  142,   44,   49,   47,   50,   48,
+       76,   51,   62,   94,   50,   41,   44,   51,   37,   61,
+       64,   64,   64,   58,   34,   34,   34,   64,  162,   80,
+       67,   68,   68,   68,   64,   64,   64,   64,   38,   81,
+       69,   70,   71,   68,   68,   68,   60,  161,   43,   69,
+       70,   65,   69,   70,   65,   65,   65,  125,   85,   85,
+
+       85,   58,   68,   68,   68,   44,  102,  110,  125,  133,
+      102,   69,   70,  111,  114,  160,  159,  126,   85,   85,
+       85,  140,  140,  140,  140,  140,  140,  153,  126,  147,
+      147,  147,  153,  148,  147,  147,  147,  158,  148,  165,
+      157,  156,  155,  151,  150,  149,  146,  154,  145,  144,
+      143,  139,  154,   36,   36,   36,   36,   36,   36,   36,
+       36,   40,  138,  137,  136,   40,   40,   42,   42,   42,
+       42,   42,   42,   42,   42,   57,   57,   57,   57,   63,
+      135,   63,   65,  134,  165,   65,  133,   65,   65,   66,
+      132,  131,   66,   66,   66,   66,   72,  130,   72,   72,
+
+       75,   75,   75,   75,   75,   75,   75,   75,   77,   77,
+       77,   77,   77,   77,   77,   77,   91,  129,   91,   92,
+      128,   92,   92,  127,   92,   92,  124,  124,  124,  124,
+      124,  124,  124,  124,  152,  152,  152,  152,  152,  152,
+      152,  152,   60,   60,  123,  122,  121,  120,  119,  118,
+      117,   45,  116,  111,  115,  113,  112,  109,  108,  107,
+       46,  106,   93,   89,  105,  104,  103,  101,  100,   99,
+       98,   97,   96,   95,   78,   76,   93,   90,   89,   88,
+       58,   87,   86,   58,   84,   83,   82,   79,   78,   76,
+       73,  165,   59,   58,   54,   35,  165,   31,   23,   23,
+
+        9,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165
     } ;
 
-static yyconst flex_int16_t yy_chk[438] =
+static const flex_int16_t yy_chk[449] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
-        1,    1,    1,    1,    1,    1,    3,    3,    3,    3,
-        7,    7,    7,  156,    3,   11,   11,   11,   18,   18,
-        3,    3,    3,    3,    3,    5,    5,    5,    5,    5,
+        1,    1,    1,    1,    1,    1,    1,    3,    3,    3,
+        3,    7,    7,    7,  163,    3,   11,   11,   11,   18,
+       18,    3,    3,    3,    3,    3,    5,    5,    5,    5,
         5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
         5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
         5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
 
         5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
-        5,    8,   12,   12,   12,   14,   15,   16,    8,    8,
-        8,   17,   20,   20,   17,   23,   24,   29,  155,   24,
-       29,   29,   29,   48,   16,   14,   31,   29,  128,   17,
-      128,   17,   48,   17,   24,   17,   24,   99,   24,   42,
-       24,   99,   15,   33,   33,   33,   23,   26,   26,   26,
-       26,  154,   33,   33,   26,   36,   42,   31,   32,   32,
-       32,   26,   26,   26,   26,   44,   59,   32,   32,   32,
-       34,   34,   34,   73,   75,   36,  153,   75,   59,   59,
-       59,   65,   44,  110,   65,   65,   65,   67,   67,   67,
-
-       73,   65,   83,   89,   89,   97,   67,   67,  119,  127,
-       97,  150,  149,  110,   83,   83,   83,  133,  133,  133,
-      141,  127,  127,  127,  145,  136,  136,  136,  119,  136,
-      140,  140,  140,  148,  140,  147,  144,  143,  142,  139,
-      141,  138,  137,  135,  145,  159,  159,  159,  159,  159,
-      159,  159,  159,  160,  134,  132,  131,  160,  160,  161,
-      161,  161,  161,  161,  161,  161,  161,  162,  162,  162,
-      162,  163,  126,  163,  164,  125,  124,  164,  123,  164,
-      164,  165,  122,  121,  165,  165,  165,  165,  166,  120,
-      166,  166,  167,  167,  167,  167,  167,  167,  167,  167,
-
-      168,  168,  168,  168,  168,  168,  168,  168,  169,  118,
-      169,  170,  117,  170,  170,  116,  170,  170,  171,  171,
-      171,  171,  171,  171,  171,  171,  172,  172,  172,  172,
-      172,  172,  172,  172,  115,  114,  112,  111,  109,  108,
-      107,  106,  105,  104,  103,  102,  101,  100,   98,   96,
-       95,   94,   93,   92,   90,   88,   86,   85,   84,   82,
-       81,   80,   79,   78,   77,   76,   74,   72,   69,   68,
-       66,   63,   61,   60,   56,   50,   49,   47,   46,   45,
+        5,    5,    5,    8,   12,   12,   12,   14,   15,   16,
+        8,    8,    8,   17,   20,   20,   17,   23,   42,   24,
+       29,  162,   24,   29,   29,   29,   16,   14,   31,   44,
+       29,   17,  134,   17,  134,   42,   17,   24,   17,   24,
+       76,   17,   24,   76,   24,   15,   44,   24,   36,   23,
+       26,   26,   26,   26,   34,   34,   34,   26,  161,   48,
+       31,   32,   32,   32,   26,   26,   26,   26,   36,   48,
+       32,   32,   32,   33,   33,   33,   60,  160,   74,   91,
+       91,   66,   33,   33,   66,   66,   66,  114,   60,   60,
+
+       60,   66,   68,   68,   68,   74,   85,   99,  124,  133,
+      102,   68,   68,   99,  102,  157,  156,  114,   85,   85,
+       85,  133,  133,  133,  140,  140,  140,  148,  124,  143,
+      143,  143,  152,  143,  147,  147,  147,  155,  147,  154,
+      151,  150,  149,  146,  145,  144,  142,  148,  141,  138,
+      137,  132,  152,  166,  166,  166,  166,  166,  166,  166,
+      166,  167,  131,  130,  129,  167,  167,  168,  168,  168,
+      168,  168,  168,  168,  168,  169,  169,  169,  169,  170,
+      128,  170,  171,  127,  126,  171,  125,  171,  171,  172,
+      123,  122,  172,  172,  172,  172,  173,  121,  173,  173,
+
+      174,  174,  174,  174,  174,  174,  174,  174,  175,  175,
+      175,  175,  175,  175,  175,  175,  176,  120,  176,  177,
+      119,  177,  177,  118,  177,  177,  178,  178,  178,  178,
+      178,  178,  178,  178,  179,  179,  179,  179,  179,  179,
+      179,  179,  116,  115,  113,  112,  111,  110,  109,  108,
+      107,  106,  105,  104,  103,  101,  100,   98,   97,   96,
+       95,   94,   92,   90,   88,   87,   86,   84,   83,   82,
+       81,   80,   79,   78,   77,   75,   73,   70,   69,   67,
+       64,   62,   61,   57,   51,   50,   49,   47,   46,   45,
        41,   38,   22,   21,   19,   13,    9,    6,    4,    2,
-      158,  158,  158,  158,  158,  158,  158,  158,  158,  158,
 
-      158,  158,  158,  158,  158,  158,  158,  158,  158,  158,
-      158,  158,  158,  158,  158,  158,  158,  158,  158,  158,
-      158,  158,  158,  158,  158,  158,  158,  158,  158,  158,
-      158,  158,  158,  158,  158,  158,  158
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165,  165,  165,
+      165,  165,  165,  165,  165,  165,  165,  165
     } ;
 
 static yy_state_type yy_last_accepting_state;
@@ -608,7 +593,7 @@ int yy_flex_debug = 0;
 #define YY_MORE_ADJ 0
 #define YY_RESTORE_YY_MORE_OFFSET
 char *yytext;
-#line 1 "dtc-lexer.l"
+#line 1 "<stdin>"
 /*
  * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
  *
@@ -632,7 +617,7 @@ char *yytext;
 
 
 
-#line 37 "dtc-lexer.l"
+#line 37 "<stdin>"
 #include "dtc.h"
 #include "srcpos.h"
 #include "dtc-parser.tab.h"
@@ -661,8 +646,10 @@ static int dts_version = 1;
 
 static void push_input_file(const char *filename);
 static bool pop_input_file(void);
-static void lexical_error(const char *fmt, ...);
-#line 666 "dtc-lexer.lex.c"
+static void PRINTF(1, 2) lexical_error(const char *fmt, ...);
+
+#line 652 "dtc-lexer.l.c"
+#line 653 "dtc-lexer.l.c"
 
 #define INITIAL 0
 #define BYTESTRING 1
@@ -681,36 +668,36 @@ static void lexical_error(const char *fmt, ...);
 #define YY_EXTRA_TYPE void *
 #endif
 
-static int yy_init_globals (void );
+static int yy_init_globals ( void );
 
 /* Accessor methods to globals.
    These are made visible to non-reentrant scanners for convenience. */
 
-int yylex_destroy (void );
+int yylex_destroy ( void );
 
-int yyget_debug (void );
+int yyget_debug ( void );
 
-void yyset_debug (int debug_flag  );
+void yyset_debug ( int debug_flag  );
 
-YY_EXTRA_TYPE yyget_extra (void );
+YY_EXTRA_TYPE yyget_extra ( void );
 
-void yyset_extra (YY_EXTRA_TYPE user_defined  );
+void yyset_extra ( YY_EXTRA_TYPE user_defined  );
 
-FILE *yyget_in (void );
+FILE *yyget_in ( void );
 
-void yyset_in  (FILE * in_str  );
+void yyset_in  ( FILE * _in_str  );
 
-FILE *yyget_out (void );
+FILE *yyget_out ( void );
 
-void yyset_out  (FILE * out_str  );
+void yyset_out  ( FILE * _out_str  );
 
-yy_size_t yyget_leng (void );
+			int yyget_leng ( void );
 
-char *yyget_text (void );
+char *yyget_text ( void );
 
-int yyget_lineno (void );
+int yyget_lineno ( void );
 
-void yyset_lineno (int line_number  );
+void yyset_lineno ( int _line_number  );
 
 /* Macros after this point can all be overridden by user definitions in
  * section 1.
@@ -718,26 +705,29 @@ void yyset_lineno (int line_number  );
 
 #ifndef YY_SKIP_YYWRAP
 #ifdef __cplusplus
-extern "C" int yywrap (void );
+extern "C" int yywrap ( void );
 #else
-extern int yywrap (void );
+extern int yywrap ( void );
+#endif
 #endif
+
+#ifndef YY_NO_UNPUT
+    
 #endif
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char *,yyconst char *,int );
+static void yy_flex_strncpy ( char *, const char *, int );
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * );
+static int yy_flex_strlen ( const char * );
 #endif
 
 #ifndef YY_NO_INPUT
-
 #ifdef __cplusplus
-static int yyinput (void );
+static int yyinput ( void );
 #else
-static int input (void );
+static int input ( void );
 #endif
 
 #endif
@@ -757,7 +747,7 @@ static int input (void );
 /* This used to be an fputs(), but since the string might contain NUL's,
  * we now use fwrite().
  */
-#define ECHO do { if (fwrite( yytext, yyleng, 1, yyout )) {} } while (0)
+#define ECHO do { if (fwrite( yytext, (size_t) yyleng, 1, yyout )) {} } while (0)
 #endif
 
 /* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
@@ -768,7 +758,7 @@ static int input (void );
 	if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
 		{ \
 		int c = '*'; \
-		size_t n; \
+		int n; \
 		for ( n = 0; n < max_size && \
 			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
 			buf[n] = (char) c; \
@@ -781,7 +771,7 @@ static int input (void );
 	else \
 		{ \
 		errno=0; \
-		while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
+		while ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \
 			{ \
 			if( errno != EINTR) \
 				{ \
@@ -836,7 +826,7 @@ extern int yylex (void);
 
 /* Code executed at the end of each rule. */
 #ifndef YY_BREAK
-#define YY_BREAK break;
+#define YY_BREAK /*LINTED*/break;
 #endif
 
 #define YY_RULE_SETUP \
@@ -849,9 +839,9 @@ extern int yylex (void);
  */
 YY_DECL
 {
-	register yy_state_type yy_current_state;
-	register char *yy_cp, *yy_bp;
-	register int yy_act;
+	yy_state_type yy_current_state;
+	char *yy_cp, *yy_bp;
+	int yy_act;
     
 	if ( !(yy_init) )
 		{
@@ -873,18 +863,18 @@ YY_DECL
 		if ( ! YY_CURRENT_BUFFER ) {
 			yyensure_buffer_stack ();
 			YY_CURRENT_BUFFER_LVALUE =
-				yy_create_buffer(yyin,YY_BUF_SIZE );
+				yy_create_buffer( yyin, YY_BUF_SIZE );
 		}
 
-		yy_load_buffer_state( );
+		yy_load_buffer_state(  );
 		}
 
 	{
-#line 68 "dtc-lexer.l"
+#line 69 "<stdin>"
 
-#line 886 "dtc-lexer.lex.c"
+#line 876 "dtc-lexer.l.c"
 
-	while ( 1 )		/* loops until end-of-file is reached */
+	while ( /*CONSTCOND*/1 )		/* loops until end-of-file is reached */
 		{
 		yy_cp = (yy_c_buf_p);
 
@@ -901,7 +891,7 @@ YY_DECL
 yy_match:
 		do
 			{
-			register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)] ;
+			YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)] ;
 			if ( yy_accept[yy_current_state] )
 				{
 				(yy_last_accepting_state) = yy_current_state;
@@ -910,13 +900,13 @@ yy_match:
 			while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
 				{
 				yy_current_state = (int) yy_def[yy_current_state];
-				if ( yy_current_state >= 159 )
-					yy_c = yy_meta[(unsigned int) yy_c];
+				if ( yy_current_state >= 166 )
+					yy_c = yy_meta[yy_c];
 				}
-			yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+			yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 			++yy_cp;
 			}
-		while ( yy_current_state != 158 );
+		while ( yy_current_state != 165 );
 		yy_cp = (yy_last_accepting_cpos);
 		yy_current_state = (yy_last_accepting_state);
 
@@ -939,7 +929,7 @@ do_action:	/* This label is used only to access EOF actions. */
 case 1:
 /* rule 1 can match eol */
 YY_RULE_SETUP
-#line 69 "dtc-lexer.l"
+#line 70 "<stdin>"
 {
 			char *name = strchr(yytext, '\"') + 1;
 			yytext[yyleng-1] = '\0';
@@ -949,33 +939,41 @@ YY_RULE_SETUP
 case 2:
 /* rule 2 can match eol */
 YY_RULE_SETUP
-#line 75 "dtc-lexer.l"
+#line 76 "<stdin>"
 {
-			char *line, *tmp, *fn;
+			char *line, *fnstart, *fnend;
+			struct data fn;
 			/* skip text before line # */
 			line = yytext;
 			while (!isdigit((unsigned char)*line))
 				line++;
-			/* skip digits in line # */
-			tmp = line;
-			while (!isspace((unsigned char)*tmp))
-				tmp++;
-			/* "NULL"-terminate line # */
-			*tmp = '\0';
-			/* start of filename */
-			fn = strchr(tmp + 1, '"') + 1;
-			/* strip trailing " from filename */
-			tmp = strchr(fn, '"');
-			*tmp = 0;
+
+			/* regexp ensures that first and list "
+			 * in the whole yytext are those at
+			 * beginning and end of the filename string */
+			fnstart = memchr(yytext, '"', yyleng);
+			for (fnend = yytext + yyleng - 1;
+			     *fnend != '"'; fnend--)
+				;
+			assert(fnstart && fnend && (fnend > fnstart));
+
+			fn = data_copy_escape_string(fnstart + 1,
+						     fnend - fnstart - 1);
+
+			/* Don't allow nuls in filenames */
+			if (memchr(fn.val, '\0', fn.len - 1))
+				lexical_error("nul in line number directive");
+
 			/* -1 since #line is the number of the next line */
-			srcpos_set_line(xstrdup(fn), atoi(line) - 1);
+			srcpos_set_line(xstrdup(fn.val), atoi(line) - 1);
+			data_free(fn);
 		}
 	YY_BREAK
 case YY_STATE_EOF(INITIAL):
 case YY_STATE_EOF(BYTESTRING):
 case YY_STATE_EOF(PROPNODENAME):
 case YY_STATE_EOF(V1):
-#line 96 "dtc-lexer.l"
+#line 105 "<stdin>"
 {
 			if (!pop_input_file()) {
 				yyterminate();
@@ -985,7 +983,7 @@ case YY_STATE_EOF(V1):
 case 3:
 /* rule 3 can match eol */
 YY_RULE_SETUP
-#line 102 "dtc-lexer.l"
+#line 111 "<stdin>"
 {
 			DPRINT("String: %s\n", yytext);
 			yylval.data = data_copy_escape_string(yytext+1,
@@ -995,7 +993,7 @@ YY_RULE_SETUP
 	YY_BREAK
 case 4:
 YY_RULE_SETUP
-#line 109 "dtc-lexer.l"
+#line 118 "<stdin>"
 {
 			DPRINT("Keyword: /dts-v1/\n");
 			dts_version = 1;
@@ -1005,25 +1003,33 @@ YY_RULE_SETUP
 	YY_BREAK
 case 5:
 YY_RULE_SETUP
-#line 116 "dtc-lexer.l"
+#line 125 "<stdin>"
+{
+			DPRINT("Keyword: /plugin/\n");
+			return DT_PLUGIN;
+		}
+	YY_BREAK
+case 6:
+YY_RULE_SETUP
+#line 130 "<stdin>"
 {
 			DPRINT("Keyword: /memreserve/\n");
 			BEGIN_DEFAULT();
 			return DT_MEMRESERVE;
 		}
 	YY_BREAK
-case 6:
+case 7:
 YY_RULE_SETUP
-#line 122 "dtc-lexer.l"
+#line 136 "<stdin>"
 {
 			DPRINT("Keyword: /bits/\n");
 			BEGIN_DEFAULT();
 			return DT_BITS;
 		}
 	YY_BREAK
-case 7:
+case 8:
 YY_RULE_SETUP
-#line 128 "dtc-lexer.l"
+#line 142 "<stdin>"
 {
 			DPRINT("Keyword: /delete-property/\n");
 			DPRINT("<PROPNODENAME>\n");
@@ -1031,9 +1037,9 @@ YY_RULE_SETUP
 			return DT_DEL_PROP;
 		}
 	YY_BREAK
-case 8:
+case 9:
 YY_RULE_SETUP
-#line 135 "dtc-lexer.l"
+#line 149 "<stdin>"
 {
 			DPRINT("Keyword: /delete-node/\n");
 			DPRINT("<PROPNODENAME>\n");
@@ -1041,9 +1047,9 @@ YY_RULE_SETUP
 			return DT_DEL_NODE;
 		}
 	YY_BREAK
-case 9:
+case 10:
 YY_RULE_SETUP
-#line 142 "dtc-lexer.l"
+#line 156 "<stdin>"
 {
 			DPRINT("Label: %s\n", yytext);
 			yylval.labelref = xstrdup(yytext);
@@ -1051,9 +1057,9 @@ YY_RULE_SETUP
 			return DT_LABEL;
 		}
 	YY_BREAK
-case 10:
+case 11:
 YY_RULE_SETUP
-#line 149 "dtc-lexer.l"
+#line 163 "<stdin>"
 {
 			char *e;
 			DPRINT("Integer Literal: '%s'\n", yytext);
@@ -1061,7 +1067,10 @@ YY_RULE_SETUP
 			errno = 0;
 			yylval.integer = strtoull(yytext, &e, 0);
 
-			assert(!(*e) || !e[strspn(e, "UL")]);
+			if (*e && e[strspn(e, "UL")]) {
+				lexical_error("Bad integer literal '%s'",
+					      yytext);
+			}
 
 			if (errno == ERANGE)
 				lexical_error("Integer literal '%s' out of range",
@@ -1073,10 +1082,10 @@ YY_RULE_SETUP
 			return DT_LITERAL;
 		}
 	YY_BREAK
-case 11:
-/* rule 11 can match eol */
+case 12:
+/* rule 12 can match eol */
 YY_RULE_SETUP
-#line 168 "dtc-lexer.l"
+#line 185 "<stdin>"
 {
 			struct data d;
 			DPRINT("Character literal: %s\n", yytext);
@@ -1085,31 +1094,31 @@ YY_RULE_SETUP
 			if (d.len == 1) {
 				lexical_error("Empty character literal");
 				yylval.integer = 0;
-				return DT_CHAR_LITERAL;
-			}
+			} else {
+				yylval.integer = (unsigned char)d.val[0];
 
-			yylval.integer = (unsigned char)d.val[0];
-
-			if (d.len > 2)
-				lexical_error("Character literal has %d"
-					      " characters instead of 1",
-					      d.len - 1);
+				if (d.len > 2)
+					lexical_error("Character literal has %d"
+						      " characters instead of 1",
+						      d.len - 1);
+			}
 
+			data_free(d);
 			return DT_CHAR_LITERAL;
 		}
 	YY_BREAK
-case 12:
+case 13:
 YY_RULE_SETUP
-#line 189 "dtc-lexer.l"
+#line 206 "<stdin>"
 {	/* label reference */
 			DPRINT("Ref: %s\n", yytext+1);
 			yylval.labelref = xstrdup(yytext+1);
 			return DT_REF;
 		}
 	YY_BREAK
-case 13:
+case 14:
 YY_RULE_SETUP
-#line 195 "dtc-lexer.l"
+#line 212 "<stdin>"
 {	/* new-style path reference */
 			yytext[yyleng-1] = '\0';
 			DPRINT("Ref: %s\n", yytext+2);
@@ -1117,27 +1126,27 @@ YY_RULE_SETUP
 			return DT_REF;
 		}
 	YY_BREAK
-case 14:
+case 15:
 YY_RULE_SETUP
-#line 202 "dtc-lexer.l"
+#line 219 "<stdin>"
 {
 			yylval.byte = strtol(yytext, NULL, 16);
 			DPRINT("Byte: %02x\n", (int)yylval.byte);
 			return DT_BYTE;
 		}
 	YY_BREAK
-case 15:
+case 16:
 YY_RULE_SETUP
-#line 208 "dtc-lexer.l"
+#line 225 "<stdin>"
 {
 			DPRINT("/BYTESTRING\n");
 			BEGIN_DEFAULT();
 			return ']';
 		}
 	YY_BREAK
-case 16:
+case 17:
 YY_RULE_SETUP
-#line 214 "dtc-lexer.l"
+#line 231 "<stdin>"
 {
 			DPRINT("PropNodeName: %s\n", yytext);
 			yylval.propnodename = xstrdup((yytext[0] == '\\') ?
@@ -1146,75 +1155,75 @@ YY_RULE_SETUP
 			return DT_PROPNODENAME;
 		}
 	YY_BREAK
-case 17:
+case 18:
 YY_RULE_SETUP
-#line 222 "dtc-lexer.l"
+#line 239 "<stdin>"
 {
 			DPRINT("Binary Include\n");
 			return DT_INCBIN;
 		}
 	YY_BREAK
-case 18:
-/* rule 18 can match eol */
-YY_RULE_SETUP
-#line 227 "dtc-lexer.l"
-/* eat whitespace */
-	YY_BREAK
 case 19:
 /* rule 19 can match eol */
 YY_RULE_SETUP
-#line 228 "dtc-lexer.l"
-/* eat C-style comments */
+#line 244 "<stdin>"
+/* eat whitespace */
 	YY_BREAK
 case 20:
 /* rule 20 can match eol */
 YY_RULE_SETUP
-#line 229 "dtc-lexer.l"
-/* eat C++-style comments */
+#line 245 "<stdin>"
+/* eat C-style comments */
 	YY_BREAK
 case 21:
+/* rule 21 can match eol */
 YY_RULE_SETUP
-#line 231 "dtc-lexer.l"
-{ return DT_LSHIFT; };
+#line 246 "<stdin>"
+/* eat C++-style comments */
 	YY_BREAK
 case 22:
 YY_RULE_SETUP
-#line 232 "dtc-lexer.l"
-{ return DT_RSHIFT; };
+#line 248 "<stdin>"
+{ return DT_LSHIFT; };
 	YY_BREAK
 case 23:
 YY_RULE_SETUP
-#line 233 "dtc-lexer.l"
-{ return DT_LE; };
+#line 249 "<stdin>"
+{ return DT_RSHIFT; };
 	YY_BREAK
 case 24:
 YY_RULE_SETUP
-#line 234 "dtc-lexer.l"
-{ return DT_GE; };
+#line 250 "<stdin>"
+{ return DT_LE; };
 	YY_BREAK
 case 25:
 YY_RULE_SETUP
-#line 235 "dtc-lexer.l"
-{ return DT_EQ; };
+#line 251 "<stdin>"
+{ return DT_GE; };
 	YY_BREAK
 case 26:
 YY_RULE_SETUP
-#line 236 "dtc-lexer.l"
-{ return DT_NE; };
+#line 252 "<stdin>"
+{ return DT_EQ; };
 	YY_BREAK
 case 27:
 YY_RULE_SETUP
-#line 237 "dtc-lexer.l"
-{ return DT_AND; };
+#line 253 "<stdin>"
+{ return DT_NE; };
 	YY_BREAK
 case 28:
 YY_RULE_SETUP
-#line 238 "dtc-lexer.l"
-{ return DT_OR; };
+#line 254 "<stdin>"
+{ return DT_AND; };
 	YY_BREAK
 case 29:
 YY_RULE_SETUP
-#line 240 "dtc-lexer.l"
+#line 255 "<stdin>"
+{ return DT_OR; };
+	YY_BREAK
+case 30:
+YY_RULE_SETUP
+#line 257 "<stdin>"
 {
 			DPRINT("Char: %c (\\x%02x)\n", yytext[0],
 				(unsigned)yytext[0]);
@@ -1230,12 +1239,12 @@ YY_RULE_SETUP
 			return yytext[0];
 		}
 	YY_BREAK
-case 30:
+case 31:
 YY_RULE_SETUP
-#line 255 "dtc-lexer.l"
+#line 272 "<stdin>"
 ECHO;
 	YY_BREAK
-#line 1239 "dtc-lexer.lex.c"
+#line 1248 "dtc-lexer.l.c"
 
 	case YY_END_OF_BUFFER:
 		{
@@ -1312,7 +1321,7 @@ ECHO;
 				{
 				(yy_did_buffer_switch_on_eof) = 0;
 
-				if ( yywrap( ) )
+				if ( yywrap(  ) )
 					{
 					/* Note: because we've taken care in
 					 * yy_get_next_buffer() to have set up
@@ -1377,9 +1386,9 @@ ECHO;
  */
 static int yy_get_next_buffer (void)
 {
-    	register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
-	register char *source = (yytext_ptr);
-	register int number_to_move, i;
+    	char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
+	char *source = (yytext_ptr);
+	int number_to_move, i;
 	int ret_val;
 
 	if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] )
@@ -1408,7 +1417,7 @@ static int yy_get_next_buffer (void)
 	/* Try to read more data. */
 
 	/* First move last chars to start of buffer. */
-	number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr)) - 1;
+	number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr) - 1);
 
 	for ( i = 0; i < number_to_move; ++i )
 		*(dest++) = *(source++);
@@ -1421,7 +1430,7 @@ static int yy_get_next_buffer (void)
 
 	else
 		{
-			yy_size_t num_to_read =
+			int num_to_read =
 			YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
 
 		while ( num_to_read <= 0 )
@@ -1435,7 +1444,7 @@ static int yy_get_next_buffer (void)
 
 			if ( b->yy_is_our_buffer )
 				{
-				yy_size_t new_size = b->yy_buf_size * 2;
+				int new_size = b->yy_buf_size * 2;
 
 				if ( new_size <= 0 )
 					b->yy_buf_size += b->yy_buf_size / 8;
@@ -1444,11 +1453,12 @@ static int yy_get_next_buffer (void)
 
 				b->yy_ch_buf = (char *)
 					/* Include room in for 2 EOB chars. */
-					yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2  );
+					yyrealloc( (void *) b->yy_ch_buf,
+							 (yy_size_t) (b->yy_buf_size + 2)  );
 				}
 			else
 				/* Can't grow it, we don't own it. */
-				b->yy_ch_buf = 0;
+				b->yy_ch_buf = NULL;
 
 			if ( ! b->yy_ch_buf )
 				YY_FATAL_ERROR(
@@ -1476,7 +1486,7 @@ static int yy_get_next_buffer (void)
 		if ( number_to_move == YY_MORE_ADJ )
 			{
 			ret_val = EOB_ACT_END_OF_FILE;
-			yyrestart(yyin  );
+			yyrestart( yyin  );
 			}
 
 		else
@@ -1490,12 +1500,15 @@ static int yy_get_next_buffer (void)
 	else
 		ret_val = EOB_ACT_CONTINUE_SCAN;
 
-	if ((yy_size_t) ((yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+	if (((yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
 		/* Extend the array by 50%, plus the number we really need. */
-		yy_size_t new_size = (yy_n_chars) + number_to_move + ((yy_n_chars) >> 1);
-		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf,new_size  );
+		int new_size = (yy_n_chars) + number_to_move + ((yy_n_chars) >> 1);
+		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc(
+			(void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size  );
 		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
 			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+		/* "- 2" to take care of EOB's */
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2);
 	}
 
 	(yy_n_chars) += number_to_move;
@@ -1511,15 +1524,15 @@ static int yy_get_next_buffer (void)
 
     static yy_state_type yy_get_previous_state (void)
 {
-	register yy_state_type yy_current_state;
-	register char *yy_cp;
+	yy_state_type yy_current_state;
+	char *yy_cp;
     
 	yy_current_state = (yy_start);
 	yy_current_state += YY_AT_BOL();
 
 	for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp )
 		{
-		register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
+		YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
 		if ( yy_accept[yy_current_state] )
 			{
 			(yy_last_accepting_state) = yy_current_state;
@@ -1528,10 +1541,10 @@ static int yy_get_next_buffer (void)
 		while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
 			{
 			yy_current_state = (int) yy_def[yy_current_state];
-			if ( yy_current_state >= 159 )
-				yy_c = yy_meta[(unsigned int) yy_c];
+			if ( yy_current_state >= 166 )
+				yy_c = yy_meta[yy_c];
 			}
-		yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
+		yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 		}
 
 	return yy_current_state;
@@ -1544,10 +1557,10 @@ static int yy_get_next_buffer (void)
  */
     static yy_state_type yy_try_NUL_trans  (yy_state_type yy_current_state )
 {
-	register int yy_is_jam;
-    	register char *yy_cp = (yy_c_buf_p);
+	int yy_is_jam;
+    	char *yy_cp = (yy_c_buf_p);
 
-	register YY_CHAR yy_c = 1;
+	YY_CHAR yy_c = 1;
 	if ( yy_accept[yy_current_state] )
 		{
 		(yy_last_accepting_state) = yy_current_state;
@@ -1556,15 +1569,19 @@ static int yy_get_next_buffer (void)
 	while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
 		{
 		yy_current_state = (int) yy_def[yy_current_state];
-		if ( yy_current_state >= 159 )
-			yy_c = yy_meta[(unsigned int) yy_c];
+		if ( yy_current_state >= 166 )
+			yy_c = yy_meta[yy_c];
 		}
-	yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
-	yy_is_jam = (yy_current_state == 158);
+	yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+	yy_is_jam = (yy_current_state == 165);
 
 		return yy_is_jam ? 0 : yy_current_state;
 }
 
+#ifndef YY_NO_UNPUT
+
+#endif
+
 #ifndef YY_NO_INPUT
 #ifdef __cplusplus
     static int yyinput (void)
@@ -1589,7 +1606,7 @@ static int yy_get_next_buffer (void)
 
 		else
 			{ /* need more input */
-			yy_size_t offset = (yy_c_buf_p) - (yytext_ptr);
+			int offset = (int) ((yy_c_buf_p) - (yytext_ptr));
 			++(yy_c_buf_p);
 
 			switch ( yy_get_next_buffer(  ) )
@@ -1606,14 +1623,14 @@ static int yy_get_next_buffer (void)
 					 */
 
 					/* Reset buffer status. */
-					yyrestart(yyin );
+					yyrestart( yyin );
 
 					/*FALLTHROUGH*/
 
 				case EOB_ACT_END_OF_FILE:
 					{
-					if ( yywrap( ) )
-						return EOF;
+					if ( yywrap(  ) )
+						return 0;
 
 					if ( ! (yy_did_buffer_switch_on_eof) )
 						YY_NEW_FILE;
@@ -1652,11 +1669,11 @@ static int yy_get_next_buffer (void)
 	if ( ! YY_CURRENT_BUFFER ){
         yyensure_buffer_stack ();
 		YY_CURRENT_BUFFER_LVALUE =
-            yy_create_buffer(yyin,YY_BUF_SIZE );
+            yy_create_buffer( yyin, YY_BUF_SIZE );
 	}
 
-	yy_init_buffer(YY_CURRENT_BUFFER,input_file );
-	yy_load_buffer_state( );
+	yy_init_buffer( YY_CURRENT_BUFFER, input_file );
+	yy_load_buffer_state(  );
 }
 
 /** Switch to a different input buffer.
@@ -1684,7 +1701,7 @@ static int yy_get_next_buffer (void)
 		}
 
 	YY_CURRENT_BUFFER_LVALUE = new_buffer;
-	yy_load_buffer_state( );
+	yy_load_buffer_state(  );
 
 	/* We don't actually know whether we did this switch during
 	 * EOF (yywrap()) processing, but the only time this flag
@@ -1712,7 +1729,7 @@ static void yy_load_buffer_state  (void)
 {
 	YY_BUFFER_STATE b;
     
-	b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state )  );
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state )  );
 	if ( ! b )
 		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
@@ -1721,13 +1738,13 @@ static void yy_load_buffer_state  (void)
 	/* yy_ch_buf has to be 2 characters longer than the size given because
 	 * we need to put in 2 end-of-buffer characters.
 	 */
-	b->yy_ch_buf = (char *) yyalloc(b->yy_buf_size + 2  );
+	b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2)  );
 	if ( ! b->yy_ch_buf )
 		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
 	b->yy_is_our_buffer = 1;
 
-	yy_init_buffer(b,file );
+	yy_init_buffer( b, file );
 
 	return b;
 }
@@ -1746,9 +1763,9 @@ static void yy_load_buffer_state  (void)
 		YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
 
 	if ( b->yy_is_our_buffer )
-		yyfree((void *) b->yy_ch_buf  );
+		yyfree( (void *) b->yy_ch_buf  );
 
-	yyfree((void *) b  );
+	yyfree( (void *) b  );
 }
 
 /* Initializes or reinitializes a buffer.
@@ -1760,7 +1777,7 @@ static void yy_load_buffer_state  (void)
 {
 	int oerrno = errno;
     
-	yy_flush_buffer(b );
+	yy_flush_buffer( b );
 
 	b->yy_input_file = file;
 	b->yy_fill_buffer = 1;
@@ -1803,7 +1820,7 @@ static void yy_load_buffer_state  (void)
 	b->yy_buffer_status = YY_BUFFER_NEW;
 
 	if ( b == YY_CURRENT_BUFFER )
-		yy_load_buffer_state( );
+		yy_load_buffer_state(  );
 }
 
 /** Pushes the new state onto the stack. The new state becomes
@@ -1834,7 +1851,7 @@ void yypush_buffer_state (YY_BUFFER_STATE new_buffer )
 	YY_CURRENT_BUFFER_LVALUE = new_buffer;
 
 	/* copied from yy_switch_to_buffer. */
-	yy_load_buffer_state( );
+	yy_load_buffer_state(  );
 	(yy_did_buffer_switch_on_eof) = 1;
 }
 
@@ -1853,7 +1870,7 @@ void yypop_buffer_state (void)
 		--(yy_buffer_stack_top);
 
 	if (YY_CURRENT_BUFFER) {
-		yy_load_buffer_state( );
+		yy_load_buffer_state(  );
 		(yy_did_buffer_switch_on_eof) = 1;
 	}
 }
@@ -1871,15 +1888,15 @@ static void yyensure_buffer_stack (void)
 		 * scanner will even need a stack. We use 2 instead of 1 to avoid an
 		 * immediate realloc on the next call.
          */
-		num_to_alloc = 1;
+      num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */
 		(yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
 								(num_to_alloc * sizeof(struct yy_buffer_state*)
 								);
 		if ( ! (yy_buffer_stack) )
 			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
-								  
+
 		memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*));
-				
+
 		(yy_buffer_stack_max) = num_to_alloc;
 		(yy_buffer_stack_top) = 0;
 		return;
@@ -1888,7 +1905,7 @@ static void yyensure_buffer_stack (void)
 	if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){
 
 		/* Increase the buffer to prepare for a possible push. */
-		int grow_size = 8 /* arbitrary grow size */;
+		yy_size_t grow_size = 8 /* arbitrary grow size */;
 
 		num_to_alloc = (yy_buffer_stack_max) + grow_size;
 		(yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc
@@ -1908,7 +1925,7 @@ static void yyensure_buffer_stack (void)
  * @param base the character buffer
  * @param size the size in bytes of the character buffer
  * 
- * @return the newly allocated buffer state object. 
+ * @return the newly allocated buffer state object.
  */
 YY_BUFFER_STATE yy_scan_buffer  (char * base, yy_size_t  size )
 {
@@ -1918,23 +1935,23 @@ YY_BUFFER_STATE yy_scan_buffer  (char * base, yy_size_t  size )
 	     base[size-2] != YY_END_OF_BUFFER_CHAR ||
 	     base[size-1] != YY_END_OF_BUFFER_CHAR )
 		/* They forgot to leave room for the EOB's. */
-		return 0;
+		return NULL;
 
-	b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state )  );
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state )  );
 	if ( ! b )
 		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
 
-	b->yy_buf_size = size - 2;	/* "- 2" to take care of EOB's */
+	b->yy_buf_size = (int) (size - 2);	/* "- 2" to take care of EOB's */
 	b->yy_buf_pos = b->yy_ch_buf = base;
 	b->yy_is_our_buffer = 0;
-	b->yy_input_file = 0;
+	b->yy_input_file = NULL;
 	b->yy_n_chars = b->yy_buf_size;
 	b->yy_is_interactive = 0;
 	b->yy_at_bol = 1;
 	b->yy_fill_buffer = 0;
 	b->yy_buffer_status = YY_BUFFER_NEW;
 
-	yy_switch_to_buffer(b  );
+	yy_switch_to_buffer( b  );
 
 	return b;
 }
@@ -1947,10 +1964,10 @@ YY_BUFFER_STATE yy_scan_buffer  (char * base, yy_size_t  size )
  * @note If you want to scan bytes that may contain NUL values, then use
  *       yy_scan_bytes() instead.
  */
-YY_BUFFER_STATE yy_scan_string (yyconst char * yystr )
+YY_BUFFER_STATE yy_scan_string (const char * yystr )
 {
     
-	return yy_scan_bytes(yystr,strlen(yystr) );
+	return yy_scan_bytes( yystr, (int) strlen(yystr) );
 }
 
 /** Setup the input buffer state to scan the given bytes. The next call to yylex() will
@@ -1960,16 +1977,16 @@ YY_BUFFER_STATE yy_scan_string (yyconst char * yystr )
  * 
  * @return the newly allocated buffer state object.
  */
-YY_BUFFER_STATE yy_scan_bytes  (yyconst char * yybytes, yy_size_t  _yybytes_len )
+YY_BUFFER_STATE yy_scan_bytes  (const char * yybytes, int  _yybytes_len )
 {
 	YY_BUFFER_STATE b;
 	char *buf;
 	yy_size_t n;
-	yy_size_t i;
+	int i;
     
 	/* Get memory for full buffer, including space for trailing EOB's. */
-	n = _yybytes_len + 2;
-	buf = (char *) yyalloc(n  );
+	n = (yy_size_t) (_yybytes_len + 2);
+	buf = (char *) yyalloc( n  );
 	if ( ! buf )
 		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
 
@@ -1978,7 +1995,7 @@ YY_BUFFER_STATE yy_scan_bytes  (yyconst char * yybytes, yy_size_t  _yybytes_len
 
 	buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR;
 
-	b = yy_scan_buffer(buf,n );
+	b = yy_scan_buffer( buf, n );
 	if ( ! b )
 		YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
 
@@ -1994,9 +2011,9 @@ YY_BUFFER_STATE yy_scan_bytes  (yyconst char * yybytes, yy_size_t  _yybytes_len
 #define YY_EXIT_FAILURE 2
 #endif
 
-static void yy_fatal_error (yyconst char* msg )
+static void yynoreturn yy_fatal_error (const char* msg )
 {
-    	(void) fprintf( stderr, "%s\n", msg );
+			fprintf( stderr, "%s\n", msg );
 	exit( YY_EXIT_FAILURE );
 }
 
@@ -2024,7 +2041,7 @@ static void yy_fatal_error (yyconst char* msg )
  */
 int yyget_lineno  (void)
 {
-        
+    
     return yylineno;
 }
 
@@ -2047,7 +2064,7 @@ FILE *yyget_out  (void)
 /** Get the length of the current token.
  * 
  */
-yy_size_t yyget_leng  (void)
+int yyget_leng  (void)
 {
         return yyleng;
 }
@@ -2062,29 +2079,29 @@ char *yyget_text  (void)
 }
 
 /** Set the current line number.
- * @param line_number
+ * @param _line_number line number
  * 
  */
-void yyset_lineno (int  line_number )
+void yyset_lineno (int  _line_number )
 {
     
-    yylineno = line_number;
+    yylineno = _line_number;
 }
 
 /** Set the input stream. This does not discard the current
  * input buffer.
- * @param in_str A readable stream.
+ * @param _in_str A readable stream.
  * 
  * @see yy_switch_to_buffer
  */
-void yyset_in (FILE *  in_str )
+void yyset_in (FILE *  _in_str )
 {
-        yyin = in_str ;
+        yyin = _in_str ;
 }
 
-void yyset_out (FILE *  out_str )
+void yyset_out (FILE *  _out_str )
 {
-        yyout = out_str ;
+        yyout = _out_str ;
 }
 
 int yyget_debug  (void)
@@ -2092,9 +2109,9 @@ int yyget_debug  (void)
         return yy_flex_debug;
 }
 
-void yyset_debug (int  bdebug )
+void yyset_debug (int  _bdebug )
 {
-        yy_flex_debug = bdebug ;
+        yy_flex_debug = _bdebug ;
 }
 
 static int yy_init_globals (void)
@@ -2103,10 +2120,10 @@ static int yy_init_globals (void)
      * This function is called from yylex_destroy(), so don't allocate here.
      */
 
-    (yy_buffer_stack) = 0;
+    (yy_buffer_stack) = NULL;
     (yy_buffer_stack_top) = 0;
     (yy_buffer_stack_max) = 0;
-    (yy_c_buf_p) = (char *) 0;
+    (yy_c_buf_p) = NULL;
     (yy_init) = 0;
     (yy_start) = 0;
 
@@ -2115,8 +2132,8 @@ static int yy_init_globals (void)
     yyin = stdin;
     yyout = stdout;
 #else
-    yyin = (FILE *) 0;
-    yyout = (FILE *) 0;
+    yyin = NULL;
+    yyout = NULL;
 #endif
 
     /* For future reference: Set errno on error, since we are called by
@@ -2131,7 +2148,7 @@ int yylex_destroy  (void)
     
     /* Pop the buffer stack, destroying each element. */
 	while(YY_CURRENT_BUFFER){
-		yy_delete_buffer(YY_CURRENT_BUFFER  );
+		yy_delete_buffer( YY_CURRENT_BUFFER  );
 		YY_CURRENT_BUFFER_LVALUE = NULL;
 		yypop_buffer_state();
 	}
@@ -2152,18 +2169,19 @@ int yylex_destroy  (void)
  */
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char* s1, yyconst char * s2, int n )
+static void yy_flex_strncpy (char* s1, const char * s2, int n )
 {
-	register int i;
+		
+	int i;
 	for ( i = 0; i < n; ++i )
 		s1[i] = s2[i];
 }
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * s )
+static int yy_flex_strlen (const char * s )
 {
-	register int n;
+	int n;
 	for ( n = 0; s[n]; ++n )
 		;
 
@@ -2173,11 +2191,12 @@ static int yy_flex_strlen (yyconst char * s )
 
 void *yyalloc (yy_size_t  size )
 {
-	return (void *) malloc( size );
+			return malloc(size);
 }
 
 void *yyrealloc  (void * ptr, yy_size_t  size )
 {
+		
 	/* The cast to (char *) in the following accommodates both
 	 * implementations that use char* generic pointers, and those
 	 * that use void* generic pointers.  It works with the latter
@@ -2185,18 +2204,17 @@ void *yyrealloc  (void * ptr, yy_size_t  size )
 	 * any pointer type to void*, and deal with argument conversions
 	 * as though doing an assignment.
 	 */
-	return (void *) realloc( (char *) ptr, size );
+	return realloc(ptr, size);
 }
 
 void yyfree (void * ptr )
 {
-	free( (char *) ptr );	/* see yyrealloc() for (char *) cast */
+			free( (char *) ptr );	/* see yyrealloc() for (char *) cast */
 }
 
 #define YYTABLES_NAME "yytables"
 
-#line 254 "dtc-lexer.l"
-
+#line 272 "<stdin>"
 
 
 static void push_input_file(const char *filename)
@@ -2207,7 +2225,7 @@ static void push_input_file(const char *filename)
 
 	yyin = current_srcfile->f;
 
-	yypush_buffer_state(yy_create_buffer(yyin,YY_BUF_SIZE));
+	yypush_buffer_state(yy_create_buffer(yyin, YY_BUF_SIZE));
 }
 
 
diff --git a/scripts/dtc/dtc-parser.tab.c_shipped b/scripts/dtc/dtc-parser.tab.c_shipped
index 27fac4b9cd..06a6e9414a 100644
--- a/scripts/dtc/dtc-parser.tab.c_shipped
+++ b/scripts/dtc/dtc-parser.tab.c_shipped
@@ -1,8 +1,8 @@
-/* A Bison parser, made by GNU Bison 3.0.2.  */
+/* A Bison parser, made by GNU Bison 3.0.4.  */
 
 /* Bison implementation for Yacc-like parsers in C
 
-   Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation, Inc.
+   Copyright (C) 1984, 1989-1990, 2000-2015 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -44,7 +44,7 @@
 #define YYBISON 1
 
 /* Bison version.  */
-#define YYBISON_VERSION "3.0.2"
+#define YYBISON_VERSION "3.0.4"
 
 /* Skeleton name.  */
 #define YYSKELETON_NAME "yacc.c"
@@ -65,6 +65,7 @@
 #line 20 "dtc-parser.y" /* yacc.c:339  */
 
 #include <stdio.h>
+#include <inttypes.h>
 
 #include "dtc.h"
 #include "srcpos.h"
@@ -77,10 +78,10 @@ extern void yyerror(char const *s);
 		treesource_error = true; \
 	} while (0)
 
-extern struct boot_info *the_boot_info;
+extern struct dt_info *parser_output;
 extern bool treesource_error;
 
-#line 84 "dtc-parser.tab.c" /* yacc.c:339  */
+#line 85 "dtc-parser.tab.c" /* yacc.c:339  */
 
 # ifndef YY_NULLPTR
 #  if defined __cplusplus && 201103L <= __cplusplus
@@ -116,35 +117,36 @@ extern int yydebug;
   enum yytokentype
   {
     DT_V1 = 258,
-    DT_MEMRESERVE = 259,
-    DT_LSHIFT = 260,
-    DT_RSHIFT = 261,
-    DT_LE = 262,
-    DT_GE = 263,
-    DT_EQ = 264,
-    DT_NE = 265,
-    DT_AND = 266,
-    DT_OR = 267,
-    DT_BITS = 268,
-    DT_DEL_PROP = 269,
-    DT_DEL_NODE = 270,
-    DT_PROPNODENAME = 271,
-    DT_LITERAL = 272,
-    DT_CHAR_LITERAL = 273,
-    DT_BYTE = 274,
-    DT_STRING = 275,
-    DT_LABEL = 276,
-    DT_REF = 277,
-    DT_INCBIN = 278
+    DT_PLUGIN = 259,
+    DT_MEMRESERVE = 260,
+    DT_LSHIFT = 261,
+    DT_RSHIFT = 262,
+    DT_LE = 263,
+    DT_GE = 264,
+    DT_EQ = 265,
+    DT_NE = 266,
+    DT_AND = 267,
+    DT_OR = 268,
+    DT_BITS = 269,
+    DT_DEL_PROP = 270,
+    DT_DEL_NODE = 271,
+    DT_PROPNODENAME = 272,
+    DT_LITERAL = 273,
+    DT_CHAR_LITERAL = 274,
+    DT_BYTE = 275,
+    DT_STRING = 276,
+    DT_LABEL = 277,
+    DT_REF = 278,
+    DT_INCBIN = 279
   };
 #endif
 
 /* Value type.  */
 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
-typedef union YYSTYPE YYSTYPE;
+
 union YYSTYPE
 {
-#line 38 "dtc-parser.y" /* yacc.c:355  */
+#line 39 "dtc-parser.y" /* yacc.c:355  */
 
 	char *propnodename;
 	char *labelref;
@@ -162,9 +164,12 @@ union YYSTYPE
 	struct node *nodelist;
 	struct reserve_info *re;
 	uint64_t integer;
+	unsigned int flags;
 
-#line 167 "dtc-parser.tab.c" /* yacc.c:355  */
+#line 170 "dtc-parser.tab.c" /* yacc.c:355  */
 };
+
+typedef union YYSTYPE YYSTYPE;
 # define YYSTYPE_IS_TRIVIAL 1
 # define YYSTYPE_IS_DECLARED 1
 #endif
@@ -192,7 +197,7 @@ int yyparse (void);
 
 /* Copy the second part of user declarations.  */
 
-#line 196 "dtc-parser.tab.c" /* yacc.c:358  */
+#line 201 "dtc-parser.tab.c" /* yacc.c:358  */
 
 #ifdef short
 # undef short
@@ -434,23 +439,23 @@ union yyalloc
 #endif /* !YYCOPY_NEEDED */
 
 /* YYFINAL -- State number of the termination state.  */
-#define YYFINAL  4
+#define YYFINAL  6
 /* YYLAST -- Last index in YYTABLE.  */
-#define YYLAST   133
+#define YYLAST   140
 
 /* YYNTOKENS -- Number of terminals.  */
-#define YYNTOKENS  47
+#define YYNTOKENS  48
 /* YYNNTS -- Number of nonterminals.  */
-#define YYNNTS  28
+#define YYNNTS  30
 /* YYNRULES -- Number of rules.  */
-#define YYNRULES  79
+#define YYNRULES  85
 /* YYNSTATES -- Number of states.  */
-#define YYNSTATES  141
+#define YYNSTATES  151
 
 /* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
    by yylex, with out-of-bounds checking.  */
 #define YYUNDEFTOK  2
-#define YYMAXUTOK   278
+#define YYMAXUTOK   279
 
 #define YYTRANSLATE(YYX)                                                \
   ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
@@ -462,16 +467,16 @@ static const yytype_uint8 yytranslate[] =
        0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,    46,     2,     2,     2,    44,    40,     2,
-      32,    34,    43,    41,    33,    42,     2,    25,     2,     2,
-       2,     2,     2,     2,     2,     2,     2,     2,    37,    24,
-      35,    28,    29,    36,     2,     2,     2,     2,     2,     2,
+       2,     2,     2,    47,     2,     2,     2,    45,    41,     2,
+      33,    35,    44,    42,    34,    43,     2,    26,     2,     2,
+       2,     2,     2,     2,     2,     2,     2,     2,    38,    25,
+      36,    29,    30,    37,     2,     2,     2,     2,     2,     2,
        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,    30,     2,    31,    39,     2,     2,     2,     2,     2,
+       2,    31,     2,    32,    40,     2,     2,     2,     2,     2,
        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
-       2,     2,     2,    26,    38,    27,    45,     2,     2,     2,
+       2,     2,     2,    27,    39,    28,    46,     2,     2,     2,
        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
@@ -486,21 +491,22 @@ static const yytype_uint8 yytranslate[] =
        2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
        2,     2,     2,     2,     2,     2,     1,     2,     3,     4,
        5,     6,     7,     8,     9,    10,    11,    12,    13,    14,
-      15,    16,    17,    18,    19,    20,    21,    22,    23
+      15,    16,    17,    18,    19,    20,    21,    22,    23,    24
 };
 
 #if YYDEBUG
   /* YYRLINE[YYN] -- Source line where rule number YYN was defined.  */
 static const yytype_uint16 yyrline[] =
 {
-       0,   104,   104,   113,   116,   123,   127,   135,   139,   143,
-     153,   168,   176,   179,   186,   190,   194,   198,   206,   210,
-     214,   218,   222,   238,   248,   256,   259,   263,   270,   286,
-     291,   310,   324,   331,   332,   333,   340,   344,   345,   349,
-     350,   354,   355,   359,   360,   364,   365,   369,   370,   374,
-     375,   376,   380,   381,   382,   383,   384,   388,   389,   390,
-     394,   395,   396,   400,   401,   402,   403,   407,   408,   409,
-     410,   415,   418,   422,   430,   433,   437,   445,   449,   453
+       0,   109,   109,   117,   121,   128,   129,   139,   142,   149,
+     153,   161,   165,   169,   180,   191,   210,   225,   233,   236,
+     243,   247,   251,   255,   263,   267,   271,   275,   279,   295,
+     305,   313,   316,   320,   327,   343,   348,   367,   381,   388,
+     389,   390,   397,   401,   402,   406,   407,   411,   412,   416,
+     417,   421,   422,   426,   427,   431,   432,   433,   437,   438,
+     439,   440,   441,   445,   446,   447,   451,   452,   453,   457,
+     458,   467,   476,   480,   481,   482,   483,   488,   491,   495,
+     503,   506,   510,   518,   522,   526
 };
 #endif
 
@@ -509,19 +515,20 @@ static const yytype_uint16 yyrline[] =
    First, the terminals, then, starting at YYNTOKENS, nonterminals.  */
 static const char *const yytname[] =
 {
-  "$end", "error", "$undefined", "DT_V1", "DT_MEMRESERVE", "DT_LSHIFT",
-  "DT_RSHIFT", "DT_LE", "DT_GE", "DT_EQ", "DT_NE", "DT_AND", "DT_OR",
-  "DT_BITS", "DT_DEL_PROP", "DT_DEL_NODE", "DT_PROPNODENAME", "DT_LITERAL",
-  "DT_CHAR_LITERAL", "DT_BYTE", "DT_STRING", "DT_LABEL", "DT_REF",
-  "DT_INCBIN", "';'", "'/'", "'{'", "'}'", "'='", "'>'", "'['", "']'",
-  "'('", "','", "')'", "'<'", "'?'", "':'", "'|'", "'^'", "'&'", "'+'",
-  "'-'", "'*'", "'%'", "'~'", "'!'", "$accept", "sourcefile",
-  "memreserves", "memreserve", "devicetree", "nodedef", "proplist",
-  "propdef", "propdata", "propdataprefix", "arrayprefix", "integer_prim",
-  "integer_expr", "integer_trinary", "integer_or", "integer_and",
-  "integer_bitor", "integer_bitxor", "integer_bitand", "integer_eq",
-  "integer_rela", "integer_shift", "integer_add", "integer_mul",
-  "integer_unary", "bytestring", "subnodes", "subnode", YY_NULLPTR
+  "$end", "error", "$undefined", "DT_V1", "DT_PLUGIN", "DT_MEMRESERVE",
+  "DT_LSHIFT", "DT_RSHIFT", "DT_LE", "DT_GE", "DT_EQ", "DT_NE", "DT_AND",
+  "DT_OR", "DT_BITS", "DT_DEL_PROP", "DT_DEL_NODE", "DT_PROPNODENAME",
+  "DT_LITERAL", "DT_CHAR_LITERAL", "DT_BYTE", "DT_STRING", "DT_LABEL",
+  "DT_REF", "DT_INCBIN", "';'", "'/'", "'{'", "'}'", "'='", "'>'", "'['",
+  "']'", "'('", "','", "')'", "'<'", "'?'", "':'", "'|'", "'^'", "'&'",
+  "'+'", "'-'", "'*'", "'%'", "'~'", "'!'", "$accept", "sourcefile",
+  "header", "headers", "memreserves", "memreserve", "devicetree",
+  "nodedef", "proplist", "propdef", "propdata", "propdataprefix",
+  "arrayprefix", "integer_prim", "integer_expr", "integer_trinary",
+  "integer_or", "integer_and", "integer_bitor", "integer_bitxor",
+  "integer_bitand", "integer_eq", "integer_rela", "integer_shift",
+  "integer_add", "integer_mul", "integer_unary", "bytestring", "subnodes",
+  "subnode", YY_NULLPTR
 };
 #endif
 
@@ -532,16 +539,16 @@ static const yytype_uint16 yytoknum[] =
 {
        0,   256,   257,   258,   259,   260,   261,   262,   263,   264,
      265,   266,   267,   268,   269,   270,   271,   272,   273,   274,
-     275,   276,   277,   278,    59,    47,   123,   125,    61,    62,
-      91,    93,    40,    44,    41,    60,    63,    58,   124,    94,
-      38,    43,    45,    42,    37,   126,    33
+     275,   276,   277,   278,   279,    59,    47,   123,   125,    61,
+      62,    91,    93,    40,    44,    41,    60,    63,    58,   124,
+      94,    38,    43,    45,    42,    37,   126,    33
 };
 # endif
 
-#define YYPACT_NINF -38
+#define YYPACT_NINF -81
 
 #define yypact_value_is_default(Yystate) \
-  (!!((Yystate) == (-38)))
+  (!!((Yystate) == (-81)))
 
 #define YYTABLE_NINF -1
 
@@ -552,21 +559,22 @@ static const yytype_uint16 yytoknum[] =
      STATE-NUM.  */
 static const yytype_int8 yypact[] =
 {
-      21,    11,    45,    10,   -38,     9,    10,    15,    10,   -38,
-     -38,    -9,     9,   -38,    56,    40,   -38,    -9,    -9,    -9,
-     -38,    51,   -38,    -6,    75,    49,    52,    48,    50,     3,
-      66,    33,     0,   -38,    65,   -38,   -38,    68,    56,    56,
-     -38,   -38,   -38,   -38,    -9,    -9,    -9,    -9,    -9,    -9,
-      -9,    -9,    -9,    -9,    -9,    -9,    -9,    -9,    -9,    -9,
-      -9,    -9,    -9,   -38,    42,    69,   -38,   -38,    75,    55,
-      49,    52,    48,    50,     3,     3,    66,    66,    66,    66,
-      33,    33,     0,     0,   -38,   -38,   -38,    78,    79,   -11,
-      42,   -38,    70,    42,   -38,    -9,    72,    74,   -38,   -38,
-     -38,   -38,   -38,    76,   -38,   -38,   -38,   -38,   -38,    18,
-      -1,   -38,   -38,   -38,   -38,    82,   -38,   -38,   -38,    71,
-     -38,   -38,    32,    67,    81,    -3,   -38,   -38,   -38,   -38,
-     -38,    43,   -38,   -38,   -38,     9,   -38,    73,     9,    77,
-     -38
+      11,    17,    23,    11,    10,    56,   -81,   -81,    21,    10,
+      -5,    10,    39,   -81,   -81,   -13,    21,   -81,    44,    44,
+      43,   -81,   -81,   -13,   -13,   -13,   -81,    38,   -81,    -2,
+      67,    53,    55,    57,    41,     1,    75,    42,   -19,   -81,
+      58,   -81,   -81,   -81,    73,    74,    44,    44,   -81,   -81,
+     -81,   -81,   -13,   -13,   -13,   -13,   -13,   -13,   -13,   -13,
+     -13,   -13,   -13,   -13,   -13,   -13,   -13,   -13,   -13,   -13,
+     -13,   -81,    46,    76,    44,   -81,   -81,    67,    61,    53,
+      55,    57,    41,     1,     1,    75,    75,    75,    75,    42,
+      42,   -19,   -19,   -81,   -81,   -81,    83,    85,    45,    46,
+     -81,    77,    46,   -81,   -81,   -13,    78,    79,   -81,   -81,
+     -81,   -81,   -81,    81,   -81,   -81,   -81,   -81,   -81,    16,
+      22,   -81,   -81,   -81,   -81,    89,   -81,   -81,   -81,    80,
+     -81,   -81,    -6,    72,    88,    35,   -81,   -81,   -81,   -81,
+     -81,    52,   -81,   -81,   -81,    21,   -81,    82,    21,    84,
+     -81
 };
 
   /* YYDEFACT[STATE-NUM] -- Default reduction number in state STATE-NUM.
@@ -574,37 +582,38 @@ static const yytype_int8 yypact[] =
      means the default is an error.  */
 static const yytype_uint8 yydefact[] =
 {
-       0,     0,     0,     3,     1,     0,     0,     0,     3,    33,
-      34,     0,     0,     6,     0,     2,     4,     0,     0,     0,
-      67,     0,    36,    37,    39,    41,    43,    45,    47,    49,
-      52,    59,    62,    66,     0,    12,     7,     0,     0,     0,
-      68,    69,    70,    35,     0,     0,     0,     0,     0,     0,
+       0,     0,     0,     5,     7,     3,     1,     6,     0,     0,
+       0,     7,     0,    39,    40,     0,     0,    10,     0,     0,
+       2,     8,     4,     0,     0,     0,    73,     0,    42,    43,
+      45,    47,    49,    51,    53,    55,    58,    65,    68,    72,
+       0,    18,    13,    11,     0,     0,     0,     0,    74,    75,
+      76,    41,     0,     0,     0,     0,     0,     0,     0,     0,
        0,     0,     0,     0,     0,     0,     0,     0,     0,     0,
-       0,     0,     0,     5,    74,     0,     9,     8,    40,     0,
-      42,    44,    46,    48,    50,    51,    55,    56,    54,    53,
-      57,    58,    60,    61,    64,    63,    65,     0,     0,     0,
-       0,    13,     0,    74,    10,     0,     0,     0,    15,    25,
-      77,    17,    79,     0,    76,    75,    38,    16,    78,     0,
-       0,    11,    24,    14,    26,     0,    18,    27,    21,     0,
-      71,    29,     0,     0,     0,     0,    32,    31,    19,    30,
-      28,     0,    72,    73,    20,     0,    23,     0,     0,     0,
-      22
+       0,     9,    80,     0,     0,    15,    12,    46,     0,    48,
+      50,    52,    54,    56,    57,    61,    62,    60,    59,    63,
+      64,    66,    67,    70,    69,    71,     0,     0,     0,     0,
+      19,     0,    80,    16,    14,     0,     0,     0,    21,    31,
+      83,    23,    85,     0,    82,    81,    44,    22,    84,     0,
+       0,    17,    30,    20,    32,     0,    24,    33,    27,     0,
+      77,    35,     0,     0,     0,     0,    38,    37,    25,    36,
+      34,     0,    78,    79,    26,     0,    29,     0,     0,     0,
+      28
 };
 
   /* YYPGOTO[NTERM-NUM].  */
 static const yytype_int8 yypgoto[] =
 {
-     -38,   -38,    96,    99,   -38,   -37,   -38,   -20,   -38,   -38,
-     -38,    -5,    62,    13,   -38,    80,    63,    84,    64,    61,
-      28,    14,    24,    25,   -14,   -38,    20,    26
+     -81,   -81,   -81,   107,   100,   103,   -81,   -18,   -81,   -80,
+     -81,   -81,   -81,    -8,    62,     9,   -81,    65,    64,    66,
+      69,    63,    30,    15,    26,    27,   -21,   -81,    20,    24
 };
 
   /* YYDEFGOTO[NTERM-NUM].  */
-static const yytype_int8 yydefgoto[] =
+static const yytype_int16 yydefgoto[] =
 {
-      -1,     2,     7,     8,    15,    36,    64,    91,   109,   110,
-     122,    20,    21,    22,    23,    24,    25,    26,    27,    28,
-      29,    30,    31,    32,    33,   125,    92,    93
+      -1,     2,     3,     4,    10,    11,    20,    42,    72,   100,
+     119,   120,   132,    26,    27,    28,    29,    30,    31,    32,
+      33,    34,    35,    36,    37,    38,    39,   135,   101,   102
 };
 
   /* YYTABLE[YYPACT[STATE-NUM]] -- What to do in state STATE-NUM.  If
@@ -612,85 +621,90 @@ static const yytype_int8 yydefgoto[] =
      number is the opposite.  If YYTABLE_NINF, syntax error.  */
 static const yytype_uint8 yytable[] =
 {
-      12,    66,    67,    40,    41,    42,    44,    34,     9,    10,
-      52,    53,   115,    98,     5,    35,   132,    99,   133,   116,
-     117,   118,   119,    11,     1,    60,     9,    10,   134,   120,
-      45,     6,    54,    17,   121,     3,    18,    19,    55,   112,
-      14,    11,   113,    61,    62,     4,    84,    85,    86,     9,
-      10,   114,   100,   126,   127,    37,    87,    88,    89,    50,
-      51,   128,    38,    90,    11,    39,    76,    77,    78,    79,
-     101,    56,    57,   104,    58,    59,   135,   136,    74,    75,
-      80,    81,    35,    82,    83,    43,    46,    47,    49,    63,
-      65,    48,    95,    94,    96,    97,   107,   103,   108,   123,
-     111,   131,   130,   124,    16,    13,   138,    69,   106,    70,
-      73,   140,    72,   105,     0,     0,   102,   129,     0,     0,
-       0,     0,     0,     0,    68,     0,     0,     0,     0,     0,
-     137,    71,     0,   139
+      16,    43,    48,    49,    50,    13,    14,    68,    40,    60,
+      61,    52,    13,    14,     1,     8,   136,   137,    18,   111,
+      15,    19,   114,     6,   138,    69,    70,    15,    75,    76,
+      23,    62,     9,    24,    25,    53,   125,    63,   122,    13,
+      14,   123,     5,   126,   127,   128,   129,    93,    94,    95,
+     124,    58,    59,   130,    15,   142,   104,   143,   131,    44,
+      12,    96,    97,    98,    22,    45,    46,   144,    99,    47,
+     108,    41,    41,    51,   109,    85,    86,    87,    88,    54,
+     110,    64,    65,    71,    66,    67,   145,   146,    83,    84,
+      89,    90,    55,    91,    92,    56,    73,    74,    57,   105,
+     106,   103,   107,   117,   118,   113,   121,   133,   140,   141,
+       7,    21,    17,   134,   116,    78,   148,    77,    79,   150,
+      82,    80,   115,   112,   139,    81,     0,     0,     0,     0,
+       0,     0,     0,     0,     0,     0,     0,   147,     0,     0,
+     149
 };
 
 static const yytype_int16 yycheck[] =
 {
-       5,    38,    39,    17,    18,    19,    12,    12,    17,    18,
-       7,     8,    13,    24,     4,    26,    19,    28,    21,    20,
-      21,    22,    23,    32,     3,    25,    17,    18,    31,    30,
-      36,    21,    29,    42,    35,    24,    45,    46,    35,    21,
-      25,    32,    24,    43,    44,     0,    60,    61,    62,    17,
-      18,    33,    89,    21,    22,    15,    14,    15,    16,     9,
-      10,    29,    22,    21,    32,    25,    52,    53,    54,    55,
-      90,     5,     6,    93,    41,    42,    33,    34,    50,    51,
-      56,    57,    26,    58,    59,    34,    11,    38,    40,    24,
-      22,    39,    37,    24,    16,    16,    24,    27,    24,    17,
-      24,    20,    35,    32,     8,     6,    33,    45,    95,    46,
-      49,    34,    48,    93,    -1,    -1,    90,   122,    -1,    -1,
-      -1,    -1,    -1,    -1,    44,    -1,    -1,    -1,    -1,    -1,
-     135,    47,    -1,   138
+       8,    19,    23,    24,    25,    18,    19,    26,    16,     8,
+       9,    13,    18,    19,     3,     5,    22,    23,    23,    99,
+      33,    26,   102,     0,    30,    44,    45,    33,    46,    47,
+      43,    30,    22,    46,    47,    37,    14,    36,    22,    18,
+      19,    25,    25,    21,    22,    23,    24,    68,    69,    70,
+      34,    10,    11,    31,    33,    20,    74,    22,    36,    16,
+       4,    15,    16,    17,    25,    22,    23,    32,    22,    26,
+      25,    27,    27,    35,    29,    60,    61,    62,    63,    12,
+      98,     6,     7,    25,    42,    43,    34,    35,    58,    59,
+      64,    65,    39,    66,    67,    40,    23,    23,    41,    38,
+      17,    25,    17,    25,    25,    28,    25,    18,    36,    21,
+       3,    11,     9,    33,   105,    53,    34,    52,    54,    35,
+      57,    55,   102,    99,   132,    56,    -1,    -1,    -1,    -1,
+      -1,    -1,    -1,    -1,    -1,    -1,    -1,   145,    -1,    -1,
+     148
 };
 
   /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
      symbol of state STATE-NUM.  */
 static const yytype_uint8 yystos[] =
 {
-       0,     3,    48,    24,     0,     4,    21,    49,    50,    17,
-      18,    32,    58,    50,    25,    51,    49,    42,    45,    46,
-      58,    59,    60,    61,    62,    63,    64,    65,    66,    67,
-      68,    69,    70,    71,    58,    26,    52,    15,    22,    25,
-      71,    71,    71,    34,    12,    36,    11,    38,    39,    40,
-       9,    10,     7,     8,    29,    35,     5,     6,    41,    42,
-      25,    43,    44,    24,    53,    22,    52,    52,    62,    59,
-      63,    64,    65,    66,    67,    67,    68,    68,    68,    68,
-      69,    69,    70,    70,    71,    71,    71,    14,    15,    16,
-      21,    54,    73,    74,    24,    37,    16,    16,    24,    28,
-      52,    54,    74,    27,    54,    73,    60,    24,    24,    55,
-      56,    24,    21,    24,    33,    13,    20,    21,    22,    23,
-      30,    35,    57,    17,    32,    72,    21,    22,    29,    58,
-      35,    20,    19,    21,    31,    33,    34,    58,    33,    58,
-      34
+       0,     3,    49,    50,    51,    25,     0,    51,     5,    22,
+      52,    53,     4,    18,    19,    33,    61,    53,    23,    26,
+      54,    52,    25,    43,    46,    47,    61,    62,    63,    64,
+      65,    66,    67,    68,    69,    70,    71,    72,    73,    74,
+      61,    27,    55,    55,    16,    22,    23,    26,    74,    74,
+      74,    35,    13,    37,    12,    39,    40,    41,    10,    11,
+       8,     9,    30,    36,     6,     7,    42,    43,    26,    44,
+      45,    25,    56,    23,    23,    55,    55,    65,    62,    66,
+      67,    68,    69,    70,    70,    71,    71,    71,    71,    72,
+      72,    73,    73,    74,    74,    74,    15,    16,    17,    22,
+      57,    76,    77,    25,    55,    38,    17,    17,    25,    29,
+      55,    57,    77,    28,    57,    76,    63,    25,    25,    58,
+      59,    25,    22,    25,    34,    14,    21,    22,    23,    24,
+      31,    36,    60,    18,    33,    75,    22,    23,    30,    61,
+      36,    21,    20,    22,    32,    34,    35,    61,    34,    61,
+      35
 };
 
   /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
 static const yytype_uint8 yyr1[] =
 {
-       0,    47,    48,    49,    49,    50,    50,    51,    51,    51,
-      51,    52,    53,    53,    54,    54,    54,    54,    55,    55,
-      55,    55,    55,    55,    55,    56,    56,    56,    57,    57,
-      57,    57,    57,    58,    58,    58,    59,    60,    60,    61,
-      61,    62,    62,    63,    63,    64,    64,    65,    65,    66,
-      66,    66,    67,    67,    67,    67,    67,    68,    68,    68,
-      69,    69,    69,    70,    70,    70,    70,    71,    71,    71,
-      71,    72,    72,    72,    73,    73,    73,    74,    74,    74
+       0,    48,    49,    50,    50,    51,    51,    52,    52,    53,
+      53,    54,    54,    54,    54,    54,    54,    55,    56,    56,
+      57,    57,    57,    57,    58,    58,    58,    58,    58,    58,
+      58,    59,    59,    59,    60,    60,    60,    60,    60,    61,
+      61,    61,    62,    63,    63,    64,    64,    65,    65,    66,
+      66,    67,    67,    68,    68,    69,    69,    69,    70,    70,
+      70,    70,    70,    71,    71,    71,    72,    72,    72,    73,
+      73,    73,    73,    74,    74,    74,    74,    75,    75,    75,
+      76,    76,    76,    77,    77,    77
 };
 
   /* YYR2[YYN] -- Number of symbols on the right hand side of rule YYN.  */
 static const yytype_uint8 yyr2[] =
 {
-       0,     2,     4,     0,     2,     4,     2,     2,     3,     3,
-       4,     5,     0,     2,     4,     2,     3,     2,     2,     3,
-       4,     2,     9,     5,     2,     0,     2,     2,     3,     1,
-       2,     2,     2,     1,     1,     3,     1,     1,     5,     1,
-       3,     1,     3,     1,     3,     1,     3,     1,     3,     1,
-       3,     3,     1,     3,     3,     3,     3,     3,     3,     1,
-       3,     3,     1,     3,     3,     3,     1,     1,     2,     2,
-       2,     0,     2,     2,     0,     2,     2,     2,     3,     2
+       0,     2,     3,     2,     4,     1,     2,     0,     2,     4,
+       2,     2,     3,     2,     4,     3,     4,     5,     0,     2,
+       4,     2,     3,     2,     2,     3,     4,     2,     9,     5,
+       2,     0,     2,     2,     3,     1,     2,     2,     2,     1,
+       1,     3,     1,     1,     5,     1,     3,     1,     3,     1,
+       3,     1,     3,     1,     3,     1,     3,     3,     1,     3,
+       3,     3,     3,     3,     3,     1,     3,     3,     1,     3,
+       3,     3,     1,     1,     2,     2,     2,     0,     2,     2,
+       0,     2,     2,     2,     3,     2
 };
 
 
@@ -1460,79 +1474,144 @@ yyreduce:
   switch (yyn)
     {
         case 2:
-#line 105 "dtc-parser.y" /* yacc.c:1646  */
+#line 110 "dtc-parser.y" /* yacc.c:1646  */
     {
-			the_boot_info = build_boot_info((yyvsp[-1].re), (yyvsp[0].node),
-							guess_boot_cpuid((yyvsp[0].node)));
+			parser_output = build_dt_info((yyvsp[-2].flags), (yyvsp[-1].re), (yyvsp[0].node),
+			                              guess_boot_cpuid((yyvsp[0].node)));
 		}
-#line 1469 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1483 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 3:
-#line 113 "dtc-parser.y" /* yacc.c:1646  */
+#line 118 "dtc-parser.y" /* yacc.c:1646  */
     {
-			(yyval.re) = NULL;
+			(yyval.flags) = DTSF_V1;
 		}
-#line 1477 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1491 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
   case 4:
-#line 117 "dtc-parser.y" /* yacc.c:1646  */
+#line 122 "dtc-parser.y" /* yacc.c:1646  */
+    {
+			(yyval.flags) = DTSF_V1 | DTSF_PLUGIN;
+		}
+#line 1499 "dtc-parser.tab.c" /* yacc.c:1646  */
+    break;
+
+  case 6:
+#line 130 "dtc-parser.y" /* yacc.c:1646  */
+    {
+			if ((yyvsp[0].flags) != (yyvsp[-1].flags))
+				ERROR(&(yylsp[0]), "Header flags don't match earlier ones");
+			(yyval.flags) = (yyvsp[-1].flags);
+		}
+#line 1509 "dtc-parser.tab.c" /* yacc.c:1646  */
+    break;
+
+  case 7:
+#line 139 "dtc-parser.y" /* yacc.c:1646  */
+    {
+			(yyval.re) = NULL;
+		}
+#line 1517 "dtc-parser.tab.c" /* yacc.c:1646  */
+    break;
+
+  case 8:
+#line 143 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.re) = chain_reserve_entry((yyvsp[-1].re), (yyvsp[0].re));
 		}
-#line 1485 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1525 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 5:
-#line 124 "dtc-parser.y" /* yacc.c:1646  */
+  case 9:
+#line 150 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.re) = build_reserve_entry((yyvsp[-2].integer), (yyvsp[-1].integer));
 		}
-#line 1493 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1533 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 6:
-#line 128 "dtc-parser.y" /* yacc.c:1646  */
+  case 10:
+#line 154 "dtc-parser.y" /* yacc.c:1646  */
     {
 			add_label(&(yyvsp[0].re)->labels, (yyvsp[-1].labelref));
 			(yyval.re) = (yyvsp[0].re);
 		}
-#line 1502 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1542 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 7:
-#line 136 "dtc-parser.y" /* yacc.c:1646  */
+  case 11:
+#line 162 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.node) = name_node((yyvsp[0].node), "");
 		}
-#line 1510 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1550 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 8:
-#line 140 "dtc-parser.y" /* yacc.c:1646  */
+  case 12:
+#line 166 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.node) = merge_nodes((yyvsp[-2].node), (yyvsp[0].node));
 		}
-#line 1518 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1558 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 9:
-#line 144 "dtc-parser.y" /* yacc.c:1646  */
+  case 13:
+#line 170 "dtc-parser.y" /* yacc.c:1646  */
     {
-			struct node *target = get_node_by_ref((yyvsp[-2].node), (yyvsp[-1].labelref));
+			/*
+			 * We rely on the rule being always:
+			 *   versioninfo plugindecl memreserves devicetree
+			 * so $-1 is what we want (plugindecl)
+			 */
+			if (!((yyvsp[(-1) - (2)].flags) & DTSF_PLUGIN))
+				ERROR(&(yylsp[0]), "Label or path %s not found", (yyvsp[-1].labelref));
+			(yyval.node) = add_orphan_node(name_node(build_node(NULL, NULL), ""), (yyvsp[0].node), (yyvsp[-1].labelref));
+		}
+#line 1573 "dtc-parser.tab.c" /* yacc.c:1646  */
+    break;
 
-			if (target)
+  case 14:
+#line 181 "dtc-parser.y" /* yacc.c:1646  */
+    {
+			struct node *target = get_node_by_ref((yyvsp[-3].node), (yyvsp[-1].labelref));
+
+			if (target) {
+				add_label(&target->labels, (yyvsp[-2].labelref));
 				merge_nodes(target, (yyvsp[0].node));
-			else
+			} else
 				ERROR(&(yylsp[-1]), "Label or path %s not found", (yyvsp[-1].labelref));
+			(yyval.node) = (yyvsp[-3].node);
+		}
+#line 1588 "dtc-parser.tab.c" /* yacc.c:1646  */
+    break;
+
+  case 15:
+#line 192 "dtc-parser.y" /* yacc.c:1646  */
+    {
+			struct node *target = get_node_by_ref((yyvsp[-2].node), (yyvsp[-1].labelref));
+
+			if (target) {
+				merge_nodes(target, (yyvsp[0].node));
+			} else {
+				/*
+				 * We rely on the rule being always:
+				 *   versioninfo plugindecl memreserves devicetree
+				 * so $-1 is what we want (plugindecl)
+				 */
+				if ((yyvsp[(-1) - (3)].flags) & DTSF_PLUGIN)
+					add_orphan_node((yyvsp[-2].node), (yyvsp[0].node), (yyvsp[-1].labelref));
+				else
+					ERROR(&(yylsp[-1]), "Label or path %s not found", (yyvsp[-1].labelref));
+			}
 			(yyval.node) = (yyvsp[-2].node);
 		}
-#line 1532 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1611 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 10:
-#line 154 "dtc-parser.y" /* yacc.c:1646  */
+  case 16:
+#line 211 "dtc-parser.y" /* yacc.c:1646  */
     {
 			struct node *target = get_node_by_ref((yyvsp[-3].node), (yyvsp[-1].labelref));
 
@@ -1544,100 +1623,100 @@ yyreduce:
 
 			(yyval.node) = (yyvsp[-3].node);
 		}
-#line 1548 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1627 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 11:
-#line 169 "dtc-parser.y" /* yacc.c:1646  */
+  case 17:
+#line 226 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.node) = build_node((yyvsp[-3].proplist), (yyvsp[-2].nodelist));
 		}
-#line 1556 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1635 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 12:
-#line 176 "dtc-parser.y" /* yacc.c:1646  */
+  case 18:
+#line 233 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.proplist) = NULL;
 		}
-#line 1564 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1643 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 13:
-#line 180 "dtc-parser.y" /* yacc.c:1646  */
+  case 19:
+#line 237 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.proplist) = chain_property((yyvsp[0].prop), (yyvsp[-1].proplist));
 		}
-#line 1572 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1651 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 14:
-#line 187 "dtc-parser.y" /* yacc.c:1646  */
+  case 20:
+#line 244 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.prop) = build_property((yyvsp[-3].propnodename), (yyvsp[-1].data));
 		}
-#line 1580 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1659 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 15:
-#line 191 "dtc-parser.y" /* yacc.c:1646  */
+  case 21:
+#line 248 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.prop) = build_property((yyvsp[-1].propnodename), empty_data);
 		}
-#line 1588 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1667 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 16:
-#line 195 "dtc-parser.y" /* yacc.c:1646  */
+  case 22:
+#line 252 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.prop) = build_property_delete((yyvsp[-1].propnodename));
 		}
-#line 1596 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1675 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 17:
-#line 199 "dtc-parser.y" /* yacc.c:1646  */
+  case 23:
+#line 256 "dtc-parser.y" /* yacc.c:1646  */
     {
 			add_label(&(yyvsp[0].prop)->labels, (yyvsp[-1].labelref));
 			(yyval.prop) = (yyvsp[0].prop);
 		}
-#line 1605 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1684 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 18:
-#line 207 "dtc-parser.y" /* yacc.c:1646  */
+  case 24:
+#line 264 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.data) = data_merge((yyvsp[-1].data), (yyvsp[0].data));
 		}
-#line 1613 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1692 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 19:
-#line 211 "dtc-parser.y" /* yacc.c:1646  */
+  case 25:
+#line 268 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.data) = data_merge((yyvsp[-2].data), (yyvsp[-1].array).data);
 		}
-#line 1621 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1700 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 20:
-#line 215 "dtc-parser.y" /* yacc.c:1646  */
+  case 26:
+#line 272 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.data) = data_merge((yyvsp[-3].data), (yyvsp[-1].data));
 		}
-#line 1629 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1708 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 21:
-#line 219 "dtc-parser.y" /* yacc.c:1646  */
+  case 27:
+#line 276 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.data) = data_add_marker((yyvsp[-1].data), REF_PATH, (yyvsp[0].labelref));
 		}
-#line 1637 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1716 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 22:
-#line 223 "dtc-parser.y" /* yacc.c:1646  */
+  case 28:
+#line 280 "dtc-parser.y" /* yacc.c:1646  */
     {
 			FILE *f = srcfile_relative_open((yyvsp[-5].data).val, NULL);
 			struct data d;
@@ -1653,11 +1732,11 @@ yyreduce:
 			(yyval.data) = data_merge((yyvsp[-8].data), d);
 			fclose(f);
 		}
-#line 1657 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1736 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 23:
-#line 239 "dtc-parser.y" /* yacc.c:1646  */
+  case 29:
+#line 296 "dtc-parser.y" /* yacc.c:1646  */
     {
 			FILE *f = srcfile_relative_open((yyvsp[-1].data).val, NULL);
 			struct data d = empty_data;
@@ -1667,43 +1746,43 @@ yyreduce:
 			(yyval.data) = data_merge((yyvsp[-4].data), d);
 			fclose(f);
 		}
-#line 1671 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1750 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 24:
-#line 249 "dtc-parser.y" /* yacc.c:1646  */
+  case 30:
+#line 306 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.data) = data_add_marker((yyvsp[-1].data), LABEL, (yyvsp[0].labelref));
 		}
-#line 1679 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1758 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 25:
-#line 256 "dtc-parser.y" /* yacc.c:1646  */
+  case 31:
+#line 313 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.data) = empty_data;
 		}
-#line 1687 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1766 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 26:
-#line 260 "dtc-parser.y" /* yacc.c:1646  */
+  case 32:
+#line 317 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.data) = (yyvsp[-1].data);
 		}
-#line 1695 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1774 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 27:
-#line 264 "dtc-parser.y" /* yacc.c:1646  */
+  case 33:
+#line 321 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.data) = data_add_marker((yyvsp[-1].data), LABEL, (yyvsp[0].labelref));
 		}
-#line 1703 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1782 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 28:
-#line 271 "dtc-parser.y" /* yacc.c:1646  */
+  case 34:
+#line 328 "dtc-parser.y" /* yacc.c:1646  */
     {
 			unsigned long long bits;
 
@@ -1719,20 +1798,20 @@ yyreduce:
 			(yyval.array).data = empty_data;
 			(yyval.array).bits = bits;
 		}
-#line 1723 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1802 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 29:
-#line 287 "dtc-parser.y" /* yacc.c:1646  */
+  case 35:
+#line 344 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.array).data = empty_data;
 			(yyval.array).bits = 32;
 		}
-#line 1732 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1811 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 30:
-#line 292 "dtc-parser.y" /* yacc.c:1646  */
+  case 36:
+#line 349 "dtc-parser.y" /* yacc.c:1646  */
     {
 			if ((yyvsp[-1].array).bits < 64) {
 				uint64_t mask = (1ULL << (yyvsp[-1].array).bits) - 1;
@@ -1751,11 +1830,11 @@ yyreduce:
 
 			(yyval.array).data = data_append_integer((yyvsp[-1].array).data, (yyvsp[0].integer), (yyvsp[-1].array).bits);
 		}
-#line 1755 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1834 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 31:
-#line 311 "dtc-parser.y" /* yacc.c:1646  */
+  case 37:
+#line 368 "dtc-parser.y" /* yacc.c:1646  */
     {
 			uint64_t val = ~0ULL >> (64 - (yyvsp[-1].array).bits);
 
@@ -1769,233 +1848,247 @@ yyreduce:
 
 			(yyval.array).data = data_append_integer((yyvsp[-1].array).data, val, (yyvsp[-1].array).bits);
 		}
-#line 1773 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1852 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 32:
-#line 325 "dtc-parser.y" /* yacc.c:1646  */
+  case 38:
+#line 382 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.array).data = data_add_marker((yyvsp[-1].array).data, LABEL, (yyvsp[0].labelref));
 		}
-#line 1781 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1860 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 35:
-#line 334 "dtc-parser.y" /* yacc.c:1646  */
+  case 41:
+#line 391 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.integer) = (yyvsp[-1].integer);
 		}
-#line 1789 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1868 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 38:
-#line 345 "dtc-parser.y" /* yacc.c:1646  */
+  case 44:
+#line 402 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-4].integer) ? (yyvsp[-2].integer) : (yyvsp[0].integer); }
-#line 1795 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1874 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 40:
-#line 350 "dtc-parser.y" /* yacc.c:1646  */
+  case 46:
+#line 407 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) || (yyvsp[0].integer); }
-#line 1801 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1880 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 42:
-#line 355 "dtc-parser.y" /* yacc.c:1646  */
+  case 48:
+#line 412 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) && (yyvsp[0].integer); }
-#line 1807 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1886 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 44:
-#line 360 "dtc-parser.y" /* yacc.c:1646  */
+  case 50:
+#line 417 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) | (yyvsp[0].integer); }
-#line 1813 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1892 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 46:
-#line 365 "dtc-parser.y" /* yacc.c:1646  */
+  case 52:
+#line 422 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) ^ (yyvsp[0].integer); }
-#line 1819 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1898 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 48:
-#line 370 "dtc-parser.y" /* yacc.c:1646  */
+  case 54:
+#line 427 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) & (yyvsp[0].integer); }
-#line 1825 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1904 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 50:
-#line 375 "dtc-parser.y" /* yacc.c:1646  */
+  case 56:
+#line 432 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) == (yyvsp[0].integer); }
-#line 1831 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1910 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 51:
-#line 376 "dtc-parser.y" /* yacc.c:1646  */
+  case 57:
+#line 433 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) != (yyvsp[0].integer); }
-#line 1837 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1916 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 53:
-#line 381 "dtc-parser.y" /* yacc.c:1646  */
+  case 59:
+#line 438 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) < (yyvsp[0].integer); }
-#line 1843 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1922 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 54:
-#line 382 "dtc-parser.y" /* yacc.c:1646  */
+  case 60:
+#line 439 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) > (yyvsp[0].integer); }
-#line 1849 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1928 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 55:
-#line 383 "dtc-parser.y" /* yacc.c:1646  */
+  case 61:
+#line 440 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) <= (yyvsp[0].integer); }
-#line 1855 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1934 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 56:
-#line 384 "dtc-parser.y" /* yacc.c:1646  */
+  case 62:
+#line 441 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) >= (yyvsp[0].integer); }
-#line 1861 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1940 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 57:
-#line 388 "dtc-parser.y" /* yacc.c:1646  */
+  case 63:
+#line 445 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) << (yyvsp[0].integer); }
-#line 1867 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1946 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 58:
-#line 389 "dtc-parser.y" /* yacc.c:1646  */
+  case 64:
+#line 446 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) >> (yyvsp[0].integer); }
-#line 1873 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1952 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 60:
-#line 394 "dtc-parser.y" /* yacc.c:1646  */
+  case 66:
+#line 451 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) + (yyvsp[0].integer); }
-#line 1879 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1958 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 61:
-#line 395 "dtc-parser.y" /* yacc.c:1646  */
+  case 67:
+#line 452 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) - (yyvsp[0].integer); }
-#line 1885 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1964 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 63:
-#line 400 "dtc-parser.y" /* yacc.c:1646  */
+  case 69:
+#line 457 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = (yyvsp[-2].integer) * (yyvsp[0].integer); }
-#line 1891 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 1970 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 64:
-#line 401 "dtc-parser.y" /* yacc.c:1646  */
-    { (yyval.integer) = (yyvsp[-2].integer) / (yyvsp[0].integer); }
-#line 1897 "dtc-parser.tab.c" /* yacc.c:1646  */
+  case 70:
+#line 459 "dtc-parser.y" /* yacc.c:1646  */
+    {
+			if ((yyvsp[0].integer) != 0) {
+				(yyval.integer) = (yyvsp[-2].integer) / (yyvsp[0].integer);
+			} else {
+				ERROR(&(yyloc), "Division by zero");
+				(yyval.integer) = 0;
+			}
+		}
+#line 1983 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 65:
-#line 402 "dtc-parser.y" /* yacc.c:1646  */
-    { (yyval.integer) = (yyvsp[-2].integer) % (yyvsp[0].integer); }
-#line 1903 "dtc-parser.tab.c" /* yacc.c:1646  */
+  case 71:
+#line 468 "dtc-parser.y" /* yacc.c:1646  */
+    {
+			if ((yyvsp[0].integer) != 0) {
+				(yyval.integer) = (yyvsp[-2].integer) % (yyvsp[0].integer);
+			} else {
+				ERROR(&(yyloc), "Division by zero");
+				(yyval.integer) = 0;
+			}
+		}
+#line 1996 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 68:
-#line 408 "dtc-parser.y" /* yacc.c:1646  */
+  case 74:
+#line 481 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = -(yyvsp[0].integer); }
-#line 1909 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 2002 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 69:
-#line 409 "dtc-parser.y" /* yacc.c:1646  */
+  case 75:
+#line 482 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = ~(yyvsp[0].integer); }
-#line 1915 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 2008 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 70:
-#line 410 "dtc-parser.y" /* yacc.c:1646  */
+  case 76:
+#line 483 "dtc-parser.y" /* yacc.c:1646  */
     { (yyval.integer) = !(yyvsp[0].integer); }
-#line 1921 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 2014 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 71:
-#line 415 "dtc-parser.y" /* yacc.c:1646  */
+  case 77:
+#line 488 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.data) = empty_data;
 		}
-#line 1929 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 2022 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 72:
-#line 419 "dtc-parser.y" /* yacc.c:1646  */
+  case 78:
+#line 492 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.data) = data_append_byte((yyvsp[-1].data), (yyvsp[0].byte));
 		}
-#line 1937 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 2030 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 73:
-#line 423 "dtc-parser.y" /* yacc.c:1646  */
+  case 79:
+#line 496 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.data) = data_add_marker((yyvsp[-1].data), LABEL, (yyvsp[0].labelref));
 		}
-#line 1945 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 2038 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 74:
-#line 430 "dtc-parser.y" /* yacc.c:1646  */
+  case 80:
+#line 503 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.nodelist) = NULL;
 		}
-#line 1953 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 2046 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 75:
-#line 434 "dtc-parser.y" /* yacc.c:1646  */
+  case 81:
+#line 507 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.nodelist) = chain_node((yyvsp[-1].node), (yyvsp[0].nodelist));
 		}
-#line 1961 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 2054 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 76:
-#line 438 "dtc-parser.y" /* yacc.c:1646  */
+  case 82:
+#line 511 "dtc-parser.y" /* yacc.c:1646  */
     {
 			ERROR(&(yylsp[0]), "Properties must precede subnodes");
 			YYERROR;
 		}
-#line 1970 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 2063 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 77:
-#line 446 "dtc-parser.y" /* yacc.c:1646  */
+  case 83:
+#line 519 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.node) = name_node((yyvsp[0].node), (yyvsp[-1].propnodename));
 		}
-#line 1978 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 2071 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 78:
-#line 450 "dtc-parser.y" /* yacc.c:1646  */
+  case 84:
+#line 523 "dtc-parser.y" /* yacc.c:1646  */
     {
 			(yyval.node) = name_node(build_node_delete(), (yyvsp[-1].propnodename));
 		}
-#line 1986 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 2079 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
-  case 79:
-#line 454 "dtc-parser.y" /* yacc.c:1646  */
+  case 85:
+#line 527 "dtc-parser.y" /* yacc.c:1646  */
     {
 			add_label(&(yyvsp[0].node)->labels, (yyvsp[-1].labelref));
 			(yyval.node) = (yyvsp[0].node);
 		}
-#line 1995 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 2088 "dtc-parser.tab.c" /* yacc.c:1646  */
     break;
 
 
-#line 1999 "dtc-parser.tab.c" /* yacc.c:1646  */
+#line 2092 "dtc-parser.tab.c" /* yacc.c:1646  */
       default: break;
     }
   /* User semantic actions sometimes alter yychar, and that requires
@@ -2230,7 +2323,7 @@ yyreturn:
 #endif
   return yyresult;
 }
-#line 460 "dtc-parser.y" /* yacc.c:1906  */
+#line 533 "dtc-parser.y" /* yacc.c:1906  */
 
 
 void yyerror(char const *s)
diff --git a/scripts/dtc/dtc-parser.tab.h_shipped b/scripts/dtc/dtc-parser.tab.h_shipped
index 30867c6883..6aa512c1b3 100644
--- a/scripts/dtc/dtc-parser.tab.h_shipped
+++ b/scripts/dtc/dtc-parser.tab.h_shipped
@@ -1,8 +1,8 @@
-/* A Bison parser, made by GNU Bison 3.0.2.  */
+/* A Bison parser, made by GNU Bison 3.0.4.  */
 
 /* Bison interface for Yacc-like parsers in C
 
-   Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation, Inc.
+   Copyright (C) 1984, 1989-1990, 2000-2015 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -46,35 +46,36 @@ extern int yydebug;
   enum yytokentype
   {
     DT_V1 = 258,
-    DT_MEMRESERVE = 259,
-    DT_LSHIFT = 260,
-    DT_RSHIFT = 261,
-    DT_LE = 262,
-    DT_GE = 263,
-    DT_EQ = 264,
-    DT_NE = 265,
-    DT_AND = 266,
-    DT_OR = 267,
-    DT_BITS = 268,
-    DT_DEL_PROP = 269,
-    DT_DEL_NODE = 270,
-    DT_PROPNODENAME = 271,
-    DT_LITERAL = 272,
-    DT_CHAR_LITERAL = 273,
-    DT_BYTE = 274,
-    DT_STRING = 275,
-    DT_LABEL = 276,
-    DT_REF = 277,
-    DT_INCBIN = 278
+    DT_PLUGIN = 259,
+    DT_MEMRESERVE = 260,
+    DT_LSHIFT = 261,
+    DT_RSHIFT = 262,
+    DT_LE = 263,
+    DT_GE = 264,
+    DT_EQ = 265,
+    DT_NE = 266,
+    DT_AND = 267,
+    DT_OR = 268,
+    DT_BITS = 269,
+    DT_DEL_PROP = 270,
+    DT_DEL_NODE = 271,
+    DT_PROPNODENAME = 272,
+    DT_LITERAL = 273,
+    DT_CHAR_LITERAL = 274,
+    DT_BYTE = 275,
+    DT_STRING = 276,
+    DT_LABEL = 277,
+    DT_REF = 278,
+    DT_INCBIN = 279
   };
 #endif
 
 /* Value type.  */
 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
-typedef union YYSTYPE YYSTYPE;
+
 union YYSTYPE
 {
-#line 38 "dtc-parser.y" /* yacc.c:1909  */
+#line 39 "dtc-parser.y" /* yacc.c:1909  */
 
 	char *propnodename;
 	char *labelref;
@@ -92,9 +93,12 @@ union YYSTYPE
 	struct node *nodelist;
 	struct reserve_info *re;
 	uint64_t integer;
+	unsigned int flags;
 
-#line 97 "dtc-parser.tab.h" /* yacc.c:1909  */
+#line 99 "dtc-parser.tab.h" /* yacc.c:1909  */
 };
+
+typedef union YYSTYPE YYSTYPE;
 # define YYSTYPE_IS_TRIVIAL 1
 # define YYSTYPE_IS_DECLARED 1
 #endif
diff --git a/scripts/dtc/dtc-parser.y b/scripts/dtc/dtc-parser.y
index ea57e0a056..44af170abf 100644
--- a/scripts/dtc/dtc-parser.y
+++ b/scripts/dtc/dtc-parser.y
@@ -19,6 +19,7 @@
  */
 %{
 #include <stdio.h>
+#include <inttypes.h>
 
 #include "dtc.h"
 #include "srcpos.h"
@@ -31,7 +32,7 @@ extern void yyerror(char const *s);
 		treesource_error = true; \
 	} while (0)
 
-extern struct boot_info *the_boot_info;
+extern struct dt_info *parser_output;
 extern bool treesource_error;
 %}
 
@@ -52,9 +53,11 @@ extern bool treesource_error;
 	struct node *nodelist;
 	struct reserve_info *re;
 	uint64_t integer;
+	unsigned int flags;
 }
 
 %token DT_V1
+%token DT_PLUGIN
 %token DT_MEMRESERVE
 %token DT_LSHIFT DT_RSHIFT DT_LE DT_GE DT_EQ DT_NE DT_AND DT_OR
 %token DT_BITS
@@ -71,6 +74,8 @@ extern bool treesource_error;
 
 %type <data> propdata
 %type <data> propdataprefix
+%type <flags> header
+%type <flags> headers
 %type <re> memreserve
 %type <re> memreserves
 %type <array> arrayprefix
@@ -101,10 +106,31 @@ extern bool treesource_error;
 %%
 
 sourcefile:
-	  DT_V1 ';' memreserves devicetree
+	  headers memreserves devicetree
 		{
-			the_boot_info = build_boot_info($3, $4,
-							guess_boot_cpuid($4));
+			parser_output = build_dt_info($1, $2, $3,
+			                              guess_boot_cpuid($3));
+		}
+	;
+
+header:
+	  DT_V1 ';'
+		{
+			$$ = DTSF_V1;
+		}
+	| DT_V1 ';' DT_PLUGIN ';'
+		{
+			$$ = DTSF_V1 | DTSF_PLUGIN;
+		}
+	;
+
+headers:
+	  header
+	| header headers
+		{
+			if ($2 != $1)
+				ERROR(&@2, "Header flags don't match earlier ones");
+			$$ = $1;
 		}
 	;
 
@@ -140,14 +166,45 @@ devicetree:
 		{
 			$$ = merge_nodes($1, $3);
 		}
+	| DT_REF nodedef
+		{
+			/*
+			 * We rely on the rule being always:
+			 *   versioninfo plugindecl memreserves devicetree
+			 * so $-1 is what we want (plugindecl)
+			 */
+			if (!($<flags>-1 & DTSF_PLUGIN))
+				ERROR(&@2, "Label or path %s not found", $1);
+			$$ = add_orphan_node(name_node(build_node(NULL, NULL), ""), $2, $1);
+		}
+	| devicetree DT_LABEL DT_REF nodedef
+		{
+			struct node *target = get_node_by_ref($1, $3);
+
+			if (target) {
+				add_label(&target->labels, $2);
+				merge_nodes(target, $4);
+			} else
+				ERROR(&@3, "Label or path %s not found", $3);
+			$$ = $1;
+		}
 	| devicetree DT_REF nodedef
 		{
 			struct node *target = get_node_by_ref($1, $2);
 
-			if (target)
+			if (target) {
 				merge_nodes(target, $3);
-			else
-				ERROR(&@2, "Label or path %s not found", $2);
+			} else {
+				/*
+				 * We rely on the rule being always:
+				 *   versioninfo plugindecl memreserves devicetree
+				 * so $-1 is what we want (plugindecl)
+				 */
+				if ($<flags>-1 & DTSF_PLUGIN)
+					add_orphan_node($1, $3, $2);
+				else
+					ERROR(&@2, "Label or path %s not found", $2);
+			}
 			$$ = $1;
 		}
 	| devicetree DT_DEL_NODE DT_REF ';'
@@ -398,8 +455,24 @@ integer_add:
 
 integer_mul:
 	  integer_mul '*' integer_unary { $$ = $1 * $3; }
-	| integer_mul '/' integer_unary { $$ = $1 / $3; }
-	| integer_mul '%' integer_unary { $$ = $1 % $3; }
+	| integer_mul '/' integer_unary
+		{
+			if ($3 != 0) {
+				$$ = $1 / $3;
+			} else {
+				ERROR(&@$, "Division by zero");
+				$$ = 0;
+			}
+		}
+	| integer_mul '%' integer_unary
+		{
+			if ($3 != 0) {
+				$$ = $1 % $3;
+			} else {
+				ERROR(&@$, "Division by zero");
+				$$ = 0;
+			}
+		}
 	| integer_unary
 	;
 
diff --git a/scripts/dtc/dtc.c b/scripts/dtc/dtc.c
index 8c4add69a7..c36994e6ea 100644
--- a/scripts/dtc/dtc.c
+++ b/scripts/dtc/dtc.c
@@ -18,6 +18,8 @@
  *                                                                   USA
  */
 
+#include <sys/stat.h>
+
 #include "dtc.h"
 #include "srcpos.h"
 
@@ -28,7 +30,16 @@ int quiet;		/* Level of quietness */
 int reservenum;		/* Number of memory reservation slots */
 int minsize;		/* Minimum blob size */
 int padsize;		/* Additional padding to blob */
-int phandle_format = PHANDLE_BOTH;	/* Use linux,phandle or phandle properties */
+int alignsize;		/* Additional padding to blob accroding to the alignsize */
+int phandle_format = PHANDLE_EPAPR;	/* Use linux,phandle or phandle properties */
+int generate_symbols;	/* enable symbols & fixup support */
+int generate_fixups;		/* suppress generation of fixups on symbol support */
+int auto_label_aliases;		/* auto generate labels -> aliases */
+
+static int is_power_of_2(int x)
+{
+	return (x > 0) && ((x & (x - 1)) == 0);
+}
 
 static void fill_fullpaths(struct node *tree, const char *prefix)
 {
@@ -48,10 +59,8 @@ static void fill_fullpaths(struct node *tree, const char *prefix)
 }
 
 /* Usage related data. */
-#define FDT_VERSION(version)	_FDT_VERSION(version)
-#define _FDT_VERSION(version)	#version
 static const char usage_synopsis[] = "dtc [options] <input file>";
-static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:fb:i:H:sW:E:hv";
+static const char usage_short_opts[] = "qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@Ahv";
 static struct option const usage_long_opts[] = {
 	{"quiet",            no_argument, NULL, 'q'},
 	{"in-format",         a_argument, NULL, 'I'},
@@ -62,6 +71,7 @@ static struct option const usage_long_opts[] = {
 	{"reserve",           a_argument, NULL, 'R'},
 	{"space",             a_argument, NULL, 'S'},
 	{"pad",               a_argument, NULL, 'p'},
+	{"align",             a_argument, NULL, 'a'},
 	{"boot-cpu",          a_argument, NULL, 'b'},
 	{"force",            no_argument, NULL, 'f'},
 	{"include",           a_argument, NULL, 'i'},
@@ -69,6 +79,8 @@ static struct option const usage_long_opts[] = {
 	{"phandle",           a_argument, NULL, 'H'},
 	{"warning",           a_argument, NULL, 'W'},
 	{"error",             a_argument, NULL, 'E'},
+	{"symbols",	     no_argument, NULL, '@'},
+	{"auto-alias",       no_argument, NULL, 'A'},
 	{"help",             no_argument, NULL, 'h'},
 	{"version",          no_argument, NULL, 'v'},
 	{NULL,               no_argument, NULL, 0x0},
@@ -84,11 +96,12 @@ static const char * const usage_opts_help[] = {
 	 "\t\tdts - device tree source text\n"
 	 "\t\tdtb - device tree blob\n"
 	 "\t\tasm - assembler source",
-	"\n\tBlob version to produce, defaults to "FDT_VERSION(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
+	"\n\tBlob version to produce, defaults to "stringify(DEFAULT_FDT_VERSION)" (for dtb and asm output)",
 	"\n\tOutput dependency file",
 	"\n\tMake space for <number> reserve map entries (for dtb and asm output)",
 	"\n\tMake the blob at least <bytes> long (extra space)",
 	"\n\tAdd padding to the blob of <bytes> long (extra space)",
+	"\n\tMake the blob align to the <bytes> (extra space)",
 	"\n\tSet the physical boot cpu",
 	"\n\tTry to produce output even if the input tree has errors",
 	"\n\tAdd a path to search for include files",
@@ -99,16 +112,62 @@ static const char * const usage_opts_help[] = {
 	 "\t\tboth   - Both \"linux,phandle\" and \"phandle\" properties",
 	"\n\tEnable/disable warnings (prefix with \"no-\")",
 	"\n\tEnable/disable errors (prefix with \"no-\")",
+	"\n\tEnable generation of symbols",
+	"\n\tEnable auto-alias of labels",
 	"\n\tPrint this help and exit",
 	"\n\tPrint version and exit",
 	NULL,
 };
 
+static const char *guess_type_by_name(const char *fname, const char *fallback)
+{
+	const char *s;
+
+	s = strrchr(fname, '.');
+	if (s == NULL)
+		return fallback;
+	if (!strcasecmp(s, ".dts"))
+		return "dts";
+	if (!strcasecmp(s, ".dtb"))
+		return "dtb";
+	return fallback;
+}
+
+static const char *guess_input_format(const char *fname, const char *fallback)
+{
+	struct stat statbuf;
+	fdt32_t magic;
+	FILE *f;
+
+	if (stat(fname, &statbuf) != 0)
+		return fallback;
+
+	if (S_ISDIR(statbuf.st_mode))
+		return "fs";
+
+	if (!S_ISREG(statbuf.st_mode))
+		return fallback;
+
+	f = fopen(fname, "r");
+	if (f == NULL)
+		return fallback;
+	if (fread(&magic, 4, 1, f) != 1) {
+		fclose(f);
+		return fallback;
+	}
+	fclose(f);
+
+	if (fdt32_to_cpu(magic) == FDT_MAGIC)
+		return "dtb";
+
+	return guess_type_by_name(fname, fallback);
+}
+
 int main(int argc, char *argv[])
 {
-	struct boot_info *bi;
-	const char *inform = "dts";
-	const char *outform = "dts";
+	struct dt_info *dti;
+	const char *inform = NULL;
+	const char *outform = NULL;
 	const char *outname = "-";
 	const char *depname = NULL;
 	bool force = false, sort = false;
@@ -122,6 +181,7 @@ int main(int argc, char *argv[])
 	reservenum = 0;
 	minsize    = 0;
 	padsize    = 0;
+	alignsize  = 0;
 
 	while ((opt = util_getopt_long()) != EOF) {
 		switch (opt) {
@@ -149,6 +209,12 @@ int main(int argc, char *argv[])
 		case 'p':
 			padsize = strtol(optarg, NULL, 0);
 			break;
+		case 'a':
+			alignsize = strtol(optarg, NULL, 0);
+			if (!is_power_of_2(alignsize))
+				die("Invalid argument \"%d\" to -a option\n",
+				    alignsize);
+			break;
 		case 'f':
 			force = true;
 			break;
@@ -187,6 +253,13 @@ int main(int argc, char *argv[])
 			parse_checks_option(false, true, optarg);
 			break;
 
+		case '@':
+			generate_symbols = 1;
+			break;
+		case 'A':
+			auto_label_aliases = 1;
+			break;
+
 		case 'h':
 			usage(NULL);
 		default:
@@ -213,28 +286,58 @@ int main(int argc, char *argv[])
 		fprintf(depfile, "%s:", outname);
 	}
 
+	if (inform == NULL)
+		inform = guess_input_format(arg, "dts");
+	if (outform == NULL) {
+		outform = guess_type_by_name(outname, NULL);
+		if (outform == NULL) {
+			if (streq(inform, "dts"))
+				outform = "dtb";
+			else
+				outform = "dts";
+		}
+	}
 	if (streq(inform, "dts"))
-		bi = dt_from_source(arg);
+		dti = dt_from_source(arg);
 	else if (streq(inform, "fs"))
-		bi = dt_from_fs(arg);
+		dti = dt_from_fs(arg);
 	else if(streq(inform, "dtb"))
-		bi = dt_from_blob(arg);
+		dti = dt_from_blob(arg);
 	else
 		die("Unknown input format \"%s\"\n", inform);
 
+	dti->outname = outname;
+
 	if (depfile) {
 		fputc('\n', depfile);
 		fclose(depfile);
 	}
 
 	if (cmdline_boot_cpuid != -1)
-		bi->boot_cpuid_phys = cmdline_boot_cpuid;
+		dti->boot_cpuid_phys = cmdline_boot_cpuid;
+
+	fill_fullpaths(dti->dt, "");
+
+	/* on a plugin, generate by default */
+	if (dti->dtsflags & DTSF_PLUGIN) {
+		generate_fixups = 1;
+	}
 
-	fill_fullpaths(bi->dt, "");
-	process_checks(force, bi);
+	process_checks(force, dti);
+
+	if (auto_label_aliases)
+		generate_label_tree(dti, "aliases", false);
+
+	if (generate_symbols)
+		generate_label_tree(dti, "__symbols__", true);
+
+	if (generate_fixups) {
+		generate_fixups_tree(dti, "__fixups__");
+		generate_local_fixups_tree(dti, "__local_fixups__");
+	}
 
 	if (sort)
-		sort_tree(bi);
+		sort_tree(dti);
 
 	if (streq(outname, "-")) {
 		outf = stdout;
@@ -246,11 +349,11 @@ int main(int argc, char *argv[])
 	}
 
 	if (streq(outform, "dts")) {
-		dt_to_source(outf, bi);
+		dt_to_source(outf, dti);
 	} else if (streq(outform, "dtb")) {
-		dt_to_blob(outf, bi, outversion);
+		dt_to_blob(outf, dti, outversion);
 	} else if (streq(outform, "asm")) {
-		dt_to_asm(outf, bi, outversion);
+		dt_to_asm(outf, dti, outversion);
 	} else if (streq(outform, "null")) {
 		/* do nothing */
 	} else {
diff --git a/scripts/dtc/dtc.h b/scripts/dtc/dtc.h
index 56212c8df6..3b18a42b86 100644
--- a/scripts/dtc/dtc.h
+++ b/scripts/dtc/dtc.h
@@ -1,5 +1,5 @@
-#ifndef _DTC_H
-#define _DTC_H
+#ifndef DTC_H
+#define DTC_H
 
 /*
  * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
@@ -31,6 +31,7 @@
 #include <ctype.h>
 #include <errno.h>
 #include <unistd.h>
+#include <inttypes.h>
 
 #include <libfdt_env.h>
 #include <fdt.h>
@@ -43,7 +44,6 @@
 #define debug(...)
 #endif
 
-
 #define DEFAULT_FDT_VERSION	17
 
 /*
@@ -53,7 +53,11 @@ extern int quiet;		/* Level of quietness */
 extern int reservenum;		/* Number of memory reservation slots */
 extern int minsize;		/* Minimum blob size */
 extern int padsize;		/* Additional padding to blob */
+extern int alignsize;		/* Additional padding to blob accroding to the alignsize */
 extern int phandle_format;	/* Use linux,phandle or phandle properties */
+extern int generate_symbols;	/* generate symbols for nodes with labels */
+extern int generate_fixups;	/* generate fixups */
+extern int auto_label_aliases;	/* auto generate labels -> aliases */
 
 #define PHANDLE_LEGACY	0x1
 #define PHANDLE_EPAPR	0x2
@@ -63,7 +67,8 @@ typedef uint32_t cell_t;
 
 
 #define streq(a, b)	(strcmp((a), (b)) == 0)
-#define strneq(a, b, n)	(strncmp((a), (b), (n)) == 0)
+#define strstarts(s, prefix)	(strncmp((s), (prefix), strlen(prefix)) == 0)
+#define strprefixeq(a, n, b)	(strlen(b) == (n) && (memcmp(a, b, n) == 0))
 
 #define ALIGN(x, a)	(((x) + (a) - 1) & ~((a) - 1))
 
@@ -110,7 +115,7 @@ struct data data_insert_at_marker(struct data d, struct marker *m,
 struct data data_merge(struct data d1, struct data d2);
 struct data data_append_cell(struct data d, cell_t word);
 struct data data_append_integer(struct data d, uint64_t word, int bits);
-struct data data_append_re(struct data d, const struct fdt_reserve_entry *re);
+struct data data_append_re(struct data d, uint64_t address, uint64_t size);
 struct data data_append_addr(struct data d, uint64_t addr);
 struct data data_append_byte(struct data d, uint8_t byte);
 struct data data_append_zeroes(struct data d, int len);
@@ -132,6 +137,10 @@ struct label {
 	struct label *next;
 };
 
+struct bus_type {
+	const char *name;
+};
+
 struct property {
 	bool deleted;
 	char *name;
@@ -158,6 +167,7 @@ struct node {
 	int addr_cells, size_cells;
 
 	struct label *labels;
+	const struct bus_type *bus;
 };
 
 #define for_each_label_withdel(l0, l) \
@@ -194,6 +204,7 @@ struct node *build_node_delete(void);
 struct node *name_node(struct node *node, char *name);
 struct node *chain_node(struct node *first, struct node *list);
 struct node *merge_nodes(struct node *old_node, struct node *new_node);
+struct node *add_orphan_node(struct node *old_node, struct node *new_node, char *ref);
 
 void add_property(struct node *node, struct property *prop);
 void delete_property_by_name(struct node *node, char *name);
@@ -201,10 +212,13 @@ void delete_property(struct property *prop);
 void add_child(struct node *parent, struct node *child);
 void delete_node_by_name(struct node *parent, char *name);
 void delete_node(struct node *node);
+void append_to_property(struct node *node,
+			char *name, const void *data, int len);
 
 const char *get_unitname(struct node *node);
 struct property *get_property(struct node *node, const char *propname);
 cell_t propval_cell(struct property *prop);
+cell_t propval_cell_n(struct property *prop, int n);
 struct property *get_property_by_label(struct node *tree, const char *label,
 				       struct node **node);
 struct marker *get_marker_label(struct node *tree, const char *label,
@@ -221,7 +235,7 @@ uint32_t guess_boot_cpuid(struct node *tree);
 /* Boot info (tree plus memreserve information */
 
 struct reserve_info {
-	struct fdt_reserve_entry re;
+	uint64_t address, size;
 
 	struct reserve_info *next;
 
@@ -235,35 +249,45 @@ struct reserve_info *add_reserve_entry(struct reserve_info *list,
 				       struct reserve_info *new);
 
 
-struct boot_info {
+struct dt_info {
+	unsigned int dtsflags;
 	struct reserve_info *reservelist;
-	struct node *dt;		/* the device tree */
 	uint32_t boot_cpuid_phys;
+	struct node *dt;		/* the device tree */
+	const char *outname;		/* filename being written to, "-" for stdout */
 };
 
-struct boot_info *build_boot_info(struct reserve_info *reservelist,
-				  struct node *tree, uint32_t boot_cpuid_phys);
-void sort_tree(struct boot_info *bi);
+/* DTS version flags definitions */
+#define DTSF_V1		0x0001	/* /dts-v1/ */
+#define DTSF_PLUGIN	0x0002	/* /plugin/ */
+
+struct dt_info *build_dt_info(unsigned int dtsflags,
+			      struct reserve_info *reservelist,
+			      struct node *tree, uint32_t boot_cpuid_phys);
+void sort_tree(struct dt_info *dti);
+void generate_label_tree(struct dt_info *dti, char *name, bool allocph);
+void generate_fixups_tree(struct dt_info *dti, char *name);
+void generate_local_fixups_tree(struct dt_info *dti, char *name);
 
 /* Checks */
 
 void parse_checks_option(bool warn, bool error, const char *arg);
-void process_checks(bool force, struct boot_info *bi);
+void process_checks(bool force, struct dt_info *dti);
 
 /* Flattened trees */
 
-void dt_to_blob(FILE *f, struct boot_info *bi, int version);
-void dt_to_asm(FILE *f, struct boot_info *bi, int version);
+void dt_to_blob(FILE *f, struct dt_info *dti, int version);
+void dt_to_asm(FILE *f, struct dt_info *dti, int version);
 
-struct boot_info *dt_from_blob(const char *fname);
+struct dt_info *dt_from_blob(const char *fname);
 
 /* Tree source */
 
-void dt_to_source(FILE *f, struct boot_info *bi);
-struct boot_info *dt_from_source(const char *f);
+void dt_to_source(FILE *f, struct dt_info *dti);
+struct dt_info *dt_from_source(const char *f);
 
 /* FS trees */
 
-struct boot_info *dt_from_fs(const char *dirname);
+struct dt_info *dt_from_fs(const char *dirname);
 
-#endif /* _DTC_H */
+#endif /* DTC_H */
diff --git a/scripts/dtc/fdt.c b/scripts/dtc/fdt.c
index 2ce6a44179..7855a17877 100644
--- a/scripts/dtc/fdt.c
+++ b/scripts/dtc/fdt.c
@@ -76,18 +76,19 @@ int fdt_check_header(const void *fdt)
 
 const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int len)
 {
-	const char *p;
+	unsigned absoffset = offset + fdt_off_dt_struct(fdt);
+
+	if ((absoffset < offset)
+	    || ((absoffset + len) < absoffset)
+	    || (absoffset + len) > fdt_totalsize(fdt))
+		return NULL;
 
 	if (fdt_version(fdt) >= 0x11)
 		if (((offset + len) < offset)
 		    || ((offset + len) > fdt_size_dt_struct(fdt)))
 			return NULL;
 
-	p = _fdt_offset_ptr(fdt, offset);
-
-	if (p + len < p)
-		return NULL;
-	return p;
+	return fdt_offset_ptr_(fdt, offset);
 }
 
 uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset)
@@ -122,6 +123,9 @@ uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset)
 		/* skip-name offset, length and value */
 		offset += sizeof(struct fdt_property) - FDT_TAGSIZE
 			+ fdt32_to_cpu(*lenp);
+		if (fdt_version(fdt) < 0x10 && fdt32_to_cpu(*lenp) >= 8 &&
+		    ((offset - fdt32_to_cpu(*lenp)) % 8) != 0)
+			offset += 4;
 		break;
 
 	case FDT_END:
@@ -140,7 +144,7 @@ uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset)
 	return tag;
 }
 
-int _fdt_check_node_offset(const void *fdt, int offset)
+int fdt_check_node_offset_(const void *fdt, int offset)
 {
 	if ((offset < 0) || (offset % FDT_TAGSIZE)
 	    || (fdt_next_tag(fdt, offset, &offset) != FDT_BEGIN_NODE))
@@ -149,7 +153,7 @@ int _fdt_check_node_offset(const void *fdt, int offset)
 	return offset;
 }
 
-int _fdt_check_prop_offset(const void *fdt, int offset)
+int fdt_check_prop_offset_(const void *fdt, int offset)
 {
 	if ((offset < 0) || (offset % FDT_TAGSIZE)
 	    || (fdt_next_tag(fdt, offset, &offset) != FDT_PROP))
@@ -164,7 +168,7 @@ int fdt_next_node(const void *fdt, int offset, int *depth)
 	uint32_t tag;
 
 	if (offset >= 0)
-		if ((nextoffset = _fdt_check_node_offset(fdt, offset)) < 0)
+		if ((nextoffset = fdt_check_node_offset_(fdt, offset)) < 0)
 			return nextoffset;
 
 	do {
@@ -226,7 +230,7 @@ int fdt_next_subnode(const void *fdt, int offset)
 	return offset;
 }
 
-const char *_fdt_find_string(const char *strtab, int tabsize, const char *s)
+const char *fdt_find_string_(const char *strtab, int tabsize, const char *s)
 {
 	int len = strlen(s) + 1;
 	const char *last = strtab + tabsize - len;
diff --git a/scripts/dtc/fdt.h b/scripts/dtc/fdt.h
index 526aedb515..74961f9026 100644
--- a/scripts/dtc/fdt.h
+++ b/scripts/dtc/fdt.h
@@ -1,5 +1,5 @@
-#ifndef _FDT_H
-#define _FDT_H
+#ifndef FDT_H
+#define FDT_H
 /*
  * libfdt - Flat Device Tree manipulation
  * Copyright (C) 2006 David Gibson, IBM Corporation.
@@ -108,4 +108,4 @@ struct fdt_property {
 #define FDT_V16_SIZE	FDT_V3_SIZE
 #define FDT_V17_SIZE	(FDT_V16_SIZE + sizeof(fdt32_t))
 
-#endif /* _FDT_H */
+#endif /* FDT_H */
diff --git a/scripts/dtc/fdt_empty_tree.c b/scripts/dtc/fdt_empty_tree.c
index f72d13b1d1..f2ae9b77c2 100644
--- a/scripts/dtc/fdt_empty_tree.c
+++ b/scripts/dtc/fdt_empty_tree.c
@@ -81,4 +81,3 @@ int fdt_create_empty_tree(void *buf, int bufsize)
 
 	return fdt_open_into(buf, buf, bufsize);
 }
-
diff --git a/scripts/dtc/fdt_overlay.c b/scripts/dtc/fdt_overlay.c
new file mode 100644
index 0000000000..bf75388ec9
--- /dev/null
+++ b/scripts/dtc/fdt_overlay.c
@@ -0,0 +1,912 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2016 Free Electrons
+ * Copyright (C) 2016 NextThing Co.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ *  a) This library is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License as
+ *     published by the Free Software Foundation; either version 2 of the
+ *     License, or (at your option) any later version.
+ *
+ *     This library is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public
+ *     License along with this library; if not, write to the Free
+ *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ *     MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ *  b) Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *     1. Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *     2. Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+/**
+ * overlay_get_target_phandle - retrieves the target phandle of a fragment
+ * @fdto: pointer to the device tree overlay blob
+ * @fragment: node offset of the fragment in the overlay
+ *
+ * overlay_get_target_phandle() retrieves the target phandle of an
+ * overlay fragment when that fragment uses a phandle (target
+ * property) instead of a path (target-path property).
+ *
+ * returns:
+ *      the phandle pointed by the target property
+ *      0, if the phandle was not found
+ *	-1, if the phandle was malformed
+ */
+static uint32_t overlay_get_target_phandle(const void *fdto, int fragment)
+{
+	const fdt32_t *val;
+	int len;
+
+	val = fdt_getprop(fdto, fragment, "target", &len);
+	if (!val)
+		return 0;
+
+	if ((len != sizeof(*val)) || (fdt32_to_cpu(*val) == (uint32_t)-1))
+		return (uint32_t)-1;
+
+	return fdt32_to_cpu(*val);
+}
+
+/**
+ * overlay_get_target - retrieves the offset of a fragment's target
+ * @fdt: Base device tree blob
+ * @fdto: Device tree overlay blob
+ * @fragment: node offset of the fragment in the overlay
+ * @pathp: pointer which receives the path of the target (or NULL)
+ *
+ * overlay_get_target() retrieves the target offset in the base
+ * device tree of a fragment, no matter how the actual targetting is
+ * done (through a phandle or a path)
+ *
+ * returns:
+ *      the targetted node offset in the base device tree
+ *      Negative error code on error
+ */
+static int overlay_get_target(const void *fdt, const void *fdto,
+			      int fragment, char const **pathp)
+{
+	uint32_t phandle;
+	const char *path = NULL;
+	int path_len = 0, ret;
+
+	/* Try first to do a phandle based lookup */
+	phandle = overlay_get_target_phandle(fdto, fragment);
+	if (phandle == (uint32_t)-1)
+		return -FDT_ERR_BADPHANDLE;
+
+	/* no phandle, try path */
+	if (!phandle) {
+		/* And then a path based lookup */
+		path = fdt_getprop(fdto, fragment, "target-path", &path_len);
+		if (path)
+			ret = fdt_path_offset(fdt, path);
+		else
+			ret = path_len;
+	} else
+		ret = fdt_node_offset_by_phandle(fdt, phandle);
+
+	/*
+	* If we haven't found either a target or a
+	* target-path property in a node that contains a
+	* __overlay__ subnode (we wouldn't be called
+	* otherwise), consider it a improperly written
+	* overlay
+	*/
+	if (ret < 0 && path_len == -FDT_ERR_NOTFOUND)
+		ret = -FDT_ERR_BADOVERLAY;
+
+	/* return on error */
+	if (ret < 0)
+		return ret;
+
+	/* return pointer to path (if available) */
+	if (pathp)
+		*pathp = path ? path : NULL;
+
+	return ret;
+}
+
+/**
+ * overlay_phandle_add_offset - Increases a phandle by an offset
+ * @fdt: Base device tree blob
+ * @node: Device tree overlay blob
+ * @name: Name of the property to modify (phandle or linux,phandle)
+ * @delta: offset to apply
+ *
+ * overlay_phandle_add_offset() increments a node phandle by a given
+ * offset.
+ *
+ * returns:
+ *      0 on success.
+ *      Negative error code on error
+ */
+static int overlay_phandle_add_offset(void *fdt, int node,
+				      const char *name, uint32_t delta)
+{
+	const fdt32_t *val;
+	uint32_t adj_val;
+	int len;
+
+	val = fdt_getprop(fdt, node, name, &len);
+	if (!val)
+		return len;
+
+	if (len != sizeof(*val))
+		return -FDT_ERR_BADPHANDLE;
+
+	adj_val = fdt32_to_cpu(*val);
+	if ((adj_val + delta) < adj_val)
+		return -FDT_ERR_NOPHANDLES;
+
+	adj_val += delta;
+	if (adj_val == (uint32_t)-1)
+		return -FDT_ERR_NOPHANDLES;
+
+	return fdt_setprop_inplace_u32(fdt, node, name, adj_val);
+}
+
+/**
+ * overlay_adjust_node_phandles - Offsets the phandles of a node
+ * @fdto: Device tree overlay blob
+ * @node: Offset of the node we want to adjust
+ * @delta: Offset to shift the phandles of
+ *
+ * overlay_adjust_node_phandles() adds a constant to all the phandles
+ * of a given node. This is mainly use as part of the overlay
+ * application process, when we want to update all the overlay
+ * phandles to not conflict with the overlays of the base device tree.
+ *
+ * returns:
+ *      0 on success
+ *      Negative error code on failure
+ */
+static int overlay_adjust_node_phandles(void *fdto, int node,
+					uint32_t delta)
+{
+	int child;
+	int ret;
+
+	ret = overlay_phandle_add_offset(fdto, node, "phandle", delta);
+	if (ret && ret != -FDT_ERR_NOTFOUND)
+		return ret;
+
+	ret = overlay_phandle_add_offset(fdto, node, "linux,phandle", delta);
+	if (ret && ret != -FDT_ERR_NOTFOUND)
+		return ret;
+
+	fdt_for_each_subnode(child, fdto, node) {
+		ret = overlay_adjust_node_phandles(fdto, child, delta);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+/**
+ * overlay_adjust_local_phandles - Adjust the phandles of a whole overlay
+ * @fdto: Device tree overlay blob
+ * @delta: Offset to shift the phandles of
+ *
+ * overlay_adjust_local_phandles() adds a constant to all the
+ * phandles of an overlay. This is mainly use as part of the overlay
+ * application process, when we want to update all the overlay
+ * phandles to not conflict with the overlays of the base device tree.
+ *
+ * returns:
+ *      0 on success
+ *      Negative error code on failure
+ */
+static int overlay_adjust_local_phandles(void *fdto, uint32_t delta)
+{
+	/*
+	 * Start adjusting the phandles from the overlay root
+	 */
+	return overlay_adjust_node_phandles(fdto, 0, delta);
+}
+
+/**
+ * overlay_update_local_node_references - Adjust the overlay references
+ * @fdto: Device tree overlay blob
+ * @tree_node: Node offset of the node to operate on
+ * @fixup_node: Node offset of the matching local fixups node
+ * @delta: Offset to shift the phandles of
+ *
+ * overlay_update_local_nodes_references() update the phandles
+ * pointing to a node within the device tree overlay by adding a
+ * constant delta.
+ *
+ * This is mainly used as part of a device tree application process,
+ * where you want the device tree overlays phandles to not conflict
+ * with the ones from the base device tree before merging them.
+ *
+ * returns:
+ *      0 on success
+ *      Negative error code on failure
+ */
+static int overlay_update_local_node_references(void *fdto,
+						int tree_node,
+						int fixup_node,
+						uint32_t delta)
+{
+	int fixup_prop;
+	int fixup_child;
+	int ret;
+
+	fdt_for_each_property_offset(fixup_prop, fdto, fixup_node) {
+		const fdt32_t *fixup_val;
+		const char *tree_val;
+		const char *name;
+		int fixup_len;
+		int tree_len;
+		int i;
+
+		fixup_val = fdt_getprop_by_offset(fdto, fixup_prop,
+						  &name, &fixup_len);
+		if (!fixup_val)
+			return fixup_len;
+
+		if (fixup_len % sizeof(uint32_t))
+			return -FDT_ERR_BADOVERLAY;
+
+		tree_val = fdt_getprop(fdto, tree_node, name, &tree_len);
+		if (!tree_val) {
+			if (tree_len == -FDT_ERR_NOTFOUND)
+				return -FDT_ERR_BADOVERLAY;
+
+			return tree_len;
+		}
+
+		for (i = 0; i < (fixup_len / sizeof(uint32_t)); i++) {
+			fdt32_t adj_val;
+			uint32_t poffset;
+
+			poffset = fdt32_to_cpu(fixup_val[i]);
+
+			/*
+			 * phandles to fixup can be unaligned.
+			 *
+			 * Use a memcpy for the architectures that do
+			 * not support unaligned accesses.
+			 */
+			memcpy(&adj_val, tree_val + poffset, sizeof(adj_val));
+
+			adj_val = cpu_to_fdt32(fdt32_to_cpu(adj_val) + delta);
+
+			ret = fdt_setprop_inplace_namelen_partial(fdto,
+								  tree_node,
+								  name,
+								  strlen(name),
+								  poffset,
+								  &adj_val,
+								  sizeof(adj_val));
+			if (ret == -FDT_ERR_NOSPACE)
+				return -FDT_ERR_BADOVERLAY;
+
+			if (ret)
+				return ret;
+		}
+	}
+
+	fdt_for_each_subnode(fixup_child, fdto, fixup_node) {
+		const char *fixup_child_name = fdt_get_name(fdto, fixup_child,
+							    NULL);
+		int tree_child;
+
+		tree_child = fdt_subnode_offset(fdto, tree_node,
+						fixup_child_name);
+		if (tree_child == -FDT_ERR_NOTFOUND)
+			return -FDT_ERR_BADOVERLAY;
+		if (tree_child < 0)
+			return tree_child;
+
+		ret = overlay_update_local_node_references(fdto,
+							   tree_child,
+							   fixup_child,
+							   delta);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+/**
+ * overlay_update_local_references - Adjust the overlay references
+ * @fdto: Device tree overlay blob
+ * @delta: Offset to shift the phandles of
+ *
+ * overlay_update_local_references() update all the phandles pointing
+ * to a node within the device tree overlay by adding a constant
+ * delta to not conflict with the base overlay.
+ *
+ * This is mainly used as part of a device tree application process,
+ * where you want the device tree overlays phandles to not conflict
+ * with the ones from the base device tree before merging them.
+ *
+ * returns:
+ *      0 on success
+ *      Negative error code on failure
+ */
+static int overlay_update_local_references(void *fdto, uint32_t delta)
+{
+	int fixups;
+
+	fixups = fdt_path_offset(fdto, "/__local_fixups__");
+	if (fixups < 0) {
+		/* There's no local phandles to adjust, bail out */
+		if (fixups == -FDT_ERR_NOTFOUND)
+			return 0;
+
+		return fixups;
+	}
+
+	/*
+	 * Update our local references from the root of the tree
+	 */
+	return overlay_update_local_node_references(fdto, 0, fixups,
+						    delta);
+}
+
+/**
+ * overlay_fixup_one_phandle - Set an overlay phandle to the base one
+ * @fdt: Base Device Tree blob
+ * @fdto: Device tree overlay blob
+ * @symbols_off: Node offset of the symbols node in the base device tree
+ * @path: Path to a node holding a phandle in the overlay
+ * @path_len: number of path characters to consider
+ * @name: Name of the property holding the phandle reference in the overlay
+ * @name_len: number of name characters to consider
+ * @poffset: Offset within the overlay property where the phandle is stored
+ * @label: Label of the node referenced by the phandle
+ *
+ * overlay_fixup_one_phandle() resolves an overlay phandle pointing to
+ * a node in the base device tree.
+ *
+ * This is part of the device tree overlay application process, when
+ * you want all the phandles in the overlay to point to the actual
+ * base dt nodes.
+ *
+ * returns:
+ *      0 on success
+ *      Negative error code on failure
+ */
+static int overlay_fixup_one_phandle(void *fdt, void *fdto,
+				     int symbols_off,
+				     const char *path, uint32_t path_len,
+				     const char *name, uint32_t name_len,
+				     int poffset, const char *label)
+{
+	const char *symbol_path;
+	uint32_t phandle;
+	fdt32_t phandle_prop;
+	int symbol_off, fixup_off;
+	int prop_len;
+
+	if (symbols_off < 0)
+		return symbols_off;
+
+	symbol_path = fdt_getprop(fdt, symbols_off, label,
+				  &prop_len);
+	if (!symbol_path)
+		return prop_len;
+
+	symbol_off = fdt_path_offset(fdt, symbol_path);
+	if (symbol_off < 0)
+		return symbol_off;
+
+	phandle = fdt_get_phandle(fdt, symbol_off);
+	if (!phandle)
+		return -FDT_ERR_NOTFOUND;
+
+	fixup_off = fdt_path_offset_namelen(fdto, path, path_len);
+	if (fixup_off == -FDT_ERR_NOTFOUND)
+		return -FDT_ERR_BADOVERLAY;
+	if (fixup_off < 0)
+		return fixup_off;
+
+	phandle_prop = cpu_to_fdt32(phandle);
+	return fdt_setprop_inplace_namelen_partial(fdto, fixup_off,
+						   name, name_len, poffset,
+						   &phandle_prop,
+						   sizeof(phandle_prop));
+};
+
+/**
+ * overlay_fixup_phandle - Set an overlay phandle to the base one
+ * @fdt: Base Device Tree blob
+ * @fdto: Device tree overlay blob
+ * @symbols_off: Node offset of the symbols node in the base device tree
+ * @property: Property offset in the overlay holding the list of fixups
+ *
+ * overlay_fixup_phandle() resolves all the overlay phandles pointed
+ * to in a __fixups__ property, and updates them to match the phandles
+ * in use in the base device tree.
+ *
+ * This is part of the device tree overlay application process, when
+ * you want all the phandles in the overlay to point to the actual
+ * base dt nodes.
+ *
+ * returns:
+ *      0 on success
+ *      Negative error code on failure
+ */
+static int overlay_fixup_phandle(void *fdt, void *fdto, int symbols_off,
+				 int property)
+{
+	const char *value;
+	const char *label;
+	int len;
+
+	value = fdt_getprop_by_offset(fdto, property,
+				      &label, &len);
+	if (!value) {
+		if (len == -FDT_ERR_NOTFOUND)
+			return -FDT_ERR_INTERNAL;
+
+		return len;
+	}
+
+	do {
+		const char *path, *name, *fixup_end;
+		const char *fixup_str = value;
+		uint32_t path_len, name_len;
+		uint32_t fixup_len;
+		char *sep, *endptr;
+		int poffset, ret;
+
+		fixup_end = memchr(value, '\0', len);
+		if (!fixup_end)
+			return -FDT_ERR_BADOVERLAY;
+		fixup_len = fixup_end - fixup_str;
+
+		len -= fixup_len + 1;
+		value += fixup_len + 1;
+
+		path = fixup_str;
+		sep = memchr(fixup_str, ':', fixup_len);
+		if (!sep || *sep != ':')
+			return -FDT_ERR_BADOVERLAY;
+
+		path_len = sep - path;
+		if (path_len == (fixup_len - 1))
+			return -FDT_ERR_BADOVERLAY;
+
+		fixup_len -= path_len + 1;
+		name = sep + 1;
+		sep = memchr(name, ':', fixup_len);
+		if (!sep || *sep != ':')
+			return -FDT_ERR_BADOVERLAY;
+
+		name_len = sep - name;
+		if (!name_len)
+			return -FDT_ERR_BADOVERLAY;
+
+		poffset = strtoul(sep + 1, &endptr, 10);
+		if ((*endptr != '\0') || (endptr <= (sep + 1)))
+			return -FDT_ERR_BADOVERLAY;
+
+		ret = overlay_fixup_one_phandle(fdt, fdto, symbols_off,
+						path, path_len, name, name_len,
+						poffset, label);
+		if (ret)
+			return ret;
+	} while (len > 0);
+
+	return 0;
+}
+
+/**
+ * overlay_fixup_phandles - Resolve the overlay phandles to the base
+ *                          device tree
+ * @fdt: Base Device Tree blob
+ * @fdto: Device tree overlay blob
+ *
+ * overlay_fixup_phandles() resolves all the overlay phandles pointing
+ * to nodes in the base device tree.
+ *
+ * This is one of the steps of the device tree overlay application
+ * process, when you want all the phandles in the overlay to point to
+ * the actual base dt nodes.
+ *
+ * returns:
+ *      0 on success
+ *      Negative error code on failure
+ */
+static int overlay_fixup_phandles(void *fdt, void *fdto)
+{
+	int fixups_off, symbols_off;
+	int property;
+
+	/* We can have overlays without any fixups */
+	fixups_off = fdt_path_offset(fdto, "/__fixups__");
+	if (fixups_off == -FDT_ERR_NOTFOUND)
+		return 0; /* nothing to do */
+	if (fixups_off < 0)
+		return fixups_off;
+
+	/* And base DTs without symbols */
+	symbols_off = fdt_path_offset(fdt, "/__symbols__");
+	if ((symbols_off < 0 && (symbols_off != -FDT_ERR_NOTFOUND)))
+		return symbols_off;
+
+	fdt_for_each_property_offset(property, fdto, fixups_off) {
+		int ret;
+
+		ret = overlay_fixup_phandle(fdt, fdto, symbols_off, property);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+/**
+ * overlay_apply_node - Merges a node into the base device tree
+ * @fdt: Base Device Tree blob
+ * @target: Node offset in the base device tree to apply the fragment to
+ * @fdto: Device tree overlay blob
+ * @node: Node offset in the overlay holding the changes to merge
+ *
+ * overlay_apply_node() merges a node into a target base device tree
+ * node pointed.
+ *
+ * This is part of the final step in the device tree overlay
+ * application process, when all the phandles have been adjusted and
+ * resolved and you just have to merge overlay into the base device
+ * tree.
+ *
+ * returns:
+ *      0 on success
+ *      Negative error code on failure
+ */
+static int overlay_apply_node(void *fdt, int target,
+			      void *fdto, int node)
+{
+	int property;
+	int subnode;
+
+	fdt_for_each_property_offset(property, fdto, node) {
+		const char *name;
+		const void *prop;
+		int prop_len;
+		int ret;
+
+		prop = fdt_getprop_by_offset(fdto, property, &name,
+					     &prop_len);
+		if (prop_len == -FDT_ERR_NOTFOUND)
+			return -FDT_ERR_INTERNAL;
+		if (prop_len < 0)
+			return prop_len;
+
+		ret = fdt_setprop(fdt, target, name, prop, prop_len);
+		if (ret)
+			return ret;
+	}
+
+	fdt_for_each_subnode(subnode, fdto, node) {
+		const char *name = fdt_get_name(fdto, subnode, NULL);
+		int nnode;
+		int ret;
+
+		nnode = fdt_add_subnode(fdt, target, name);
+		if (nnode == -FDT_ERR_EXISTS) {
+			nnode = fdt_subnode_offset(fdt, target, name);
+			if (nnode == -FDT_ERR_NOTFOUND)
+				return -FDT_ERR_INTERNAL;
+		}
+
+		if (nnode < 0)
+			return nnode;
+
+		ret = overlay_apply_node(fdt, nnode, fdto, subnode);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+/**
+ * overlay_merge - Merge an overlay into its base device tree
+ * @fdt: Base Device Tree blob
+ * @fdto: Device tree overlay blob
+ *
+ * overlay_merge() merges an overlay into its base device tree.
+ *
+ * This is the next to last step in the device tree overlay application
+ * process, when all the phandles have been adjusted and resolved and
+ * you just have to merge overlay into the base device tree.
+ *
+ * returns:
+ *      0 on success
+ *      Negative error code on failure
+ */
+static int overlay_merge(void *fdt, void *fdto)
+{
+	int fragment;
+
+	fdt_for_each_subnode(fragment, fdto, 0) {
+		int overlay;
+		int target;
+		int ret;
+
+		/*
+		 * Each fragments will have an __overlay__ node. If
+		 * they don't, it's not supposed to be merged
+		 */
+		overlay = fdt_subnode_offset(fdto, fragment, "__overlay__");
+		if (overlay == -FDT_ERR_NOTFOUND)
+			continue;
+
+		if (overlay < 0)
+			return overlay;
+
+		target = overlay_get_target(fdt, fdto, fragment, NULL);
+		if (target < 0)
+			return target;
+
+		ret = overlay_apply_node(fdt, target, fdto, overlay);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int get_path_len(const void *fdt, int nodeoffset)
+{
+	int len = 0, namelen;
+	const char *name;
+
+	FDT_CHECK_HEADER(fdt);
+
+	for (;;) {
+		name = fdt_get_name(fdt, nodeoffset, &namelen);
+		if (!name)
+			return namelen;
+
+		/* root? we're done */
+		if (namelen == 0)
+			break;
+
+		nodeoffset = fdt_parent_offset(fdt, nodeoffset);
+		if (nodeoffset < 0)
+			return nodeoffset;
+		len += namelen + 1;
+	}
+
+	/* in case of root pretend it's "/" */
+	if (len == 0)
+		len++;
+	return len;
+}
+
+/**
+ * overlay_symbol_update - Update the symbols of base tree after a merge
+ * @fdt: Base Device Tree blob
+ * @fdto: Device tree overlay blob
+ *
+ * overlay_symbol_update() updates the symbols of the base tree with the
+ * symbols of the applied overlay
+ *
+ * This is the last step in the device tree overlay application
+ * process, allowing the reference of overlay symbols by subsequent
+ * overlay operations.
+ *
+ * returns:
+ *      0 on success
+ *      Negative error code on failure
+ */
+static int overlay_symbol_update(void *fdt, void *fdto)
+{
+	int root_sym, ov_sym, prop, path_len, fragment, target;
+	int len, frag_name_len, ret, rel_path_len;
+	const char *s, *e;
+	const char *path;
+	const char *name;
+	const char *frag_name;
+	const char *rel_path;
+	const char *target_path;
+	char *buf;
+	void *p;
+
+	ov_sym = fdt_subnode_offset(fdto, 0, "__symbols__");
+
+	/* if no overlay symbols exist no problem */
+	if (ov_sym < 0)
+		return 0;
+
+	root_sym = fdt_subnode_offset(fdt, 0, "__symbols__");
+
+	/* it no root symbols exist we should create them */
+	if (root_sym == -FDT_ERR_NOTFOUND)
+		root_sym = fdt_add_subnode(fdt, 0, "__symbols__");
+
+	/* any error is fatal now */
+	if (root_sym < 0)
+		return root_sym;
+
+	/* iterate over each overlay symbol */
+	fdt_for_each_property_offset(prop, fdto, ov_sym) {
+		path = fdt_getprop_by_offset(fdto, prop, &name, &path_len);
+		if (!path)
+			return path_len;
+
+		/* verify it's a string property (terminated by a single \0) */
+		if (path_len < 1 || memchr(path, '\0', path_len) != &path[path_len - 1])
+			return -FDT_ERR_BADVALUE;
+
+		/* keep end marker to avoid strlen() */
+		e = path + path_len;
+
+		/* format: /<fragment-name>/__overlay__/<relative-subnode-path> */
+
+		if (*path != '/')
+			return -FDT_ERR_BADVALUE;
+
+		/* get fragment name first */
+		s = strchr(path + 1, '/');
+		if (!s)
+			return -FDT_ERR_BADOVERLAY;
+
+		frag_name = path + 1;
+		frag_name_len = s - path - 1;
+
+		/* verify format; safe since "s" lies in \0 terminated prop */
+		len = sizeof("/__overlay__/") - 1;
+		if ((e - s) < len || memcmp(s, "/__overlay__/", len))
+			return -FDT_ERR_BADOVERLAY;
+
+		rel_path = s + len;
+		rel_path_len = e - rel_path;
+
+		/* find the fragment index in which the symbol lies */
+		ret = fdt_subnode_offset_namelen(fdto, 0, frag_name,
+					       frag_name_len);
+		/* not found? */
+		if (ret < 0)
+			return -FDT_ERR_BADOVERLAY;
+		fragment = ret;
+
+		/* an __overlay__ subnode must exist */
+		ret = fdt_subnode_offset(fdto, fragment, "__overlay__");
+		if (ret < 0)
+			return -FDT_ERR_BADOVERLAY;
+
+		/* get the target of the fragment */
+		ret = overlay_get_target(fdt, fdto, fragment, &target_path);
+		if (ret < 0)
+			return ret;
+		target = ret;
+
+		/* if we have a target path use */
+		if (!target_path) {
+			ret = get_path_len(fdt, target);
+			if (ret < 0)
+				return ret;
+			len = ret;
+		} else {
+			len = strlen(target_path);
+		}
+
+		ret = fdt_setprop_placeholder(fdt, root_sym, name,
+				len + (len > 1) + rel_path_len + 1, &p);
+		if (ret < 0)
+			return ret;
+
+		if (!target_path) {
+			/* again in case setprop_placeholder changed it */
+			ret = overlay_get_target(fdt, fdto, fragment, &target_path);
+			if (ret < 0)
+				return ret;
+			target = ret;
+		}
+
+		buf = p;
+		if (len > 1) { /* target is not root */
+			if (!target_path) {
+				ret = fdt_get_path(fdt, target, buf, len + 1);
+				if (ret < 0)
+					return ret;
+			} else
+				memcpy(buf, target_path, len + 1);
+
+		} else
+			len--;
+
+		buf[len] = '/';
+		memcpy(buf + len + 1, rel_path, rel_path_len);
+		buf[len + 1 + rel_path_len] = '\0';
+	}
+
+	return 0;
+}
+
+int fdt_overlay_apply(void *fdt, void *fdto)
+{
+	uint32_t delta = fdt_get_max_phandle(fdt);
+	int ret;
+
+	FDT_CHECK_HEADER(fdt);
+	FDT_CHECK_HEADER(fdto);
+
+	ret = overlay_adjust_local_phandles(fdto, delta);
+	if (ret)
+		goto err;
+
+	ret = overlay_update_local_references(fdto, delta);
+	if (ret)
+		goto err;
+
+	ret = overlay_fixup_phandles(fdt, fdto);
+	if (ret)
+		goto err;
+
+	ret = overlay_merge(fdt, fdto);
+	if (ret)
+		goto err;
+
+	ret = overlay_symbol_update(fdt, fdto);
+	if (ret)
+		goto err;
+
+	/*
+	 * The overlay has been damaged, erase its magic.
+	 */
+	fdt_set_magic(fdto, ~0);
+
+	return 0;
+
+err:
+	/*
+	 * The overlay might have been damaged, erase its magic.
+	 */
+	fdt_set_magic(fdto, ~0);
+
+	/*
+	 * The base device tree might have been damaged, erase its
+	 * magic.
+	 */
+	fdt_set_magic(fdt, ~0);
+
+	return ret;
+}
diff --git a/scripts/dtc/fdt_ro.c b/scripts/dtc/fdt_ro.c
index 50007f61ce..dfb3236da3 100644
--- a/scripts/dtc/fdt_ro.c
+++ b/scripts/dtc/fdt_ro.c
@@ -55,12 +55,13 @@
 
 #include "libfdt_internal.h"
 
-static int _fdt_nodename_eq(const void *fdt, int offset,
+static int fdt_nodename_eq_(const void *fdt, int offset,
 			    const char *s, int len)
 {
-	const char *p = fdt_offset_ptr(fdt, offset + FDT_TAGSIZE, len+1);
+	int olen;
+	const char *p = fdt_get_name(fdt, offset, &olen);
 
-	if (! p)
+	if (!p || olen < len)
 		/* short match */
 		return 0;
 
@@ -80,7 +81,7 @@ const char *fdt_string(const void *fdt, int stroffset)
 	return (const char *)fdt + fdt_off_dt_strings(fdt) + stroffset;
 }
 
-static int _fdt_string_eq(const void *fdt, int stroffset,
+static int fdt_string_eq_(const void *fdt, int stroffset,
 			  const char *s, int len)
 {
 	const char *p = fdt_string(fdt, stroffset);
@@ -88,11 +89,37 @@ static int _fdt_string_eq(const void *fdt, int stroffset,
 	return (strlen(p) == len) && (memcmp(p, s, len) == 0);
 }
 
+uint32_t fdt_get_max_phandle(const void *fdt)
+{
+	uint32_t max_phandle = 0;
+	int offset;
+
+	for (offset = fdt_next_node(fdt, -1, NULL);;
+	     offset = fdt_next_node(fdt, offset, NULL)) {
+		uint32_t phandle;
+
+		if (offset == -FDT_ERR_NOTFOUND)
+			return max_phandle;
+
+		if (offset < 0)
+			return (uint32_t)-1;
+
+		phandle = fdt_get_phandle(fdt, offset);
+		if (phandle == (uint32_t)-1)
+			continue;
+
+		if (phandle > max_phandle)
+			max_phandle = phandle;
+	}
+
+	return 0;
+}
+
 int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size)
 {
 	FDT_CHECK_HEADER(fdt);
-	*address = fdt64_to_cpu(_fdt_mem_rsv(fdt, n)->address);
-	*size = fdt64_to_cpu(_fdt_mem_rsv(fdt, n)->size);
+	*address = fdt64_to_cpu(fdt_mem_rsv_(fdt, n)->address);
+	*size = fdt64_to_cpu(fdt_mem_rsv_(fdt, n)->size);
 	return 0;
 }
 
@@ -100,12 +127,12 @@ int fdt_num_mem_rsv(const void *fdt)
 {
 	int i = 0;
 
-	while (fdt64_to_cpu(_fdt_mem_rsv(fdt, i)->size) != 0)
+	while (fdt64_to_cpu(fdt_mem_rsv_(fdt, i)->size) != 0)
 		i++;
 	return i;
 }
 
-static int _nextprop(const void *fdt, int offset)
+static int nextprop_(const void *fdt, int offset)
 {
 	uint32_t tag;
 	int nextoffset;
@@ -140,7 +167,7 @@ int fdt_subnode_offset_namelen(const void *fdt, int offset,
 	     (offset >= 0) && (depth >= 0);
 	     offset = fdt_next_node(fdt, offset, &depth))
 		if ((depth == 1)
-		    && _fdt_nodename_eq(fdt, offset, name, namelen))
+		    && fdt_nodename_eq_(fdt, offset, name, namelen))
 			return offset;
 
 	if (depth < 0)
@@ -154,9 +181,9 @@ int fdt_subnode_offset(const void *fdt, int parentoffset,
 	return fdt_subnode_offset_namelen(fdt, parentoffset, name, strlen(name));
 }
 
-int fdt_path_offset(const void *fdt, const char *path)
+int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen)
 {
-	const char *end = path + strlen(path);
+	const char *end = path + namelen;
 	const char *p = path;
 	int offset = 0;
 
@@ -164,7 +191,7 @@ int fdt_path_offset(const void *fdt, const char *path)
 
 	/* see if we have an alias */
 	if (*path != '/') {
-		const char *q = strchr(path, '/');
+		const char *q = memchr(path, '/', end - p);
 
 		if (!q)
 			q = end;
@@ -177,14 +204,15 @@ int fdt_path_offset(const void *fdt, const char *path)
 		p = q;
 	}
 
-	while (*p) {
+	while (p < end) {
 		const char *q;
 
-		while (*p == '/')
+		while (*p == '/') {
 			p++;
-		if (! *p)
-			return offset;
-		q = strchr(p, '/');
+			if (p == end)
+				return offset;
+		}
+		q = memchr(p, '/', end - p);
 		if (! q)
 			q = end;
 
@@ -198,19 +226,42 @@ int fdt_path_offset(const void *fdt, const char *path)
 	return offset;
 }
 
+int fdt_path_offset(const void *fdt, const char *path)
+{
+	return fdt_path_offset_namelen(fdt, path, strlen(path));
+}
+
 const char *fdt_get_name(const void *fdt, int nodeoffset, int *len)
 {
-	const struct fdt_node_header *nh = _fdt_offset_ptr(fdt, nodeoffset);
+	const struct fdt_node_header *nh = fdt_offset_ptr_(fdt, nodeoffset);
+	const char *nameptr;
 	int err;
 
 	if (((err = fdt_check_header(fdt)) != 0)
-	    || ((err = _fdt_check_node_offset(fdt, nodeoffset)) < 0))
+	    || ((err = fdt_check_node_offset_(fdt, nodeoffset)) < 0))
 			goto fail;
 
+	nameptr = nh->name;
+
+	if (fdt_version(fdt) < 0x10) {
+		/*
+		 * For old FDT versions, match the naming conventions of V16:
+		 * give only the leaf name (after all /). The actual tree
+		 * contents are loosely checked.
+		 */
+		const char *leaf;
+		leaf = strrchr(nameptr, '/');
+		if (leaf == NULL) {
+			err = -FDT_ERR_BADSTRUCTURE;
+			goto fail;
+		}
+		nameptr = leaf+1;
+	}
+
 	if (len)
-		*len = strlen(nh->name);
+		*len = strlen(nameptr);
 
-	return nh->name;
+	return nameptr;
 
  fail:
 	if (len)
@@ -222,34 +273,34 @@ int fdt_first_property_offset(const void *fdt, int nodeoffset)
 {
 	int offset;
 
-	if ((offset = _fdt_check_node_offset(fdt, nodeoffset)) < 0)
+	if ((offset = fdt_check_node_offset_(fdt, nodeoffset)) < 0)
 		return offset;
 
-	return _nextprop(fdt, offset);
+	return nextprop_(fdt, offset);
 }
 
 int fdt_next_property_offset(const void *fdt, int offset)
 {
-	if ((offset = _fdt_check_prop_offset(fdt, offset)) < 0)
+	if ((offset = fdt_check_prop_offset_(fdt, offset)) < 0)
 		return offset;
 
-	return _nextprop(fdt, offset);
+	return nextprop_(fdt, offset);
 }
 
-const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
-						      int offset,
-						      int *lenp)
+static const struct fdt_property *fdt_get_property_by_offset_(const void *fdt,
+						              int offset,
+						              int *lenp)
 {
 	int err;
 	const struct fdt_property *prop;
 
-	if ((err = _fdt_check_prop_offset(fdt, offset)) < 0) {
+	if ((err = fdt_check_prop_offset_(fdt, offset)) < 0) {
 		if (lenp)
 			*lenp = err;
 		return NULL;
 	}
 
-	prop = _fdt_offset_ptr(fdt, offset);
+	prop = fdt_offset_ptr_(fdt, offset);
 
 	if (lenp)
 		*lenp = fdt32_to_cpu(prop->len);
@@ -257,23 +308,44 @@ const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
 	return prop;
 }
 
-const struct fdt_property *fdt_get_property_namelen(const void *fdt,
-						    int offset,
-						    const char *name,
-						    int namelen, int *lenp)
+const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
+						      int offset,
+						      int *lenp)
+{
+	/* Prior to version 16, properties may need realignment
+	 * and this API does not work. fdt_getprop_*() will, however. */
+
+	if (fdt_version(fdt) < 0x10) {
+		if (lenp)
+			*lenp = -FDT_ERR_BADVERSION;
+		return NULL;
+	}
+
+	return fdt_get_property_by_offset_(fdt, offset, lenp);
+}
+
+static const struct fdt_property *fdt_get_property_namelen_(const void *fdt,
+						            int offset,
+						            const char *name,
+						            int namelen,
+							    int *lenp,
+							    int *poffset)
 {
 	for (offset = fdt_first_property_offset(fdt, offset);
 	     (offset >= 0);
 	     (offset = fdt_next_property_offset(fdt, offset))) {
 		const struct fdt_property *prop;
 
-		if (!(prop = fdt_get_property_by_offset(fdt, offset, lenp))) {
+		if (!(prop = fdt_get_property_by_offset_(fdt, offset, lenp))) {
 			offset = -FDT_ERR_INTERNAL;
 			break;
 		}
-		if (_fdt_string_eq(fdt, fdt32_to_cpu(prop->nameoff),
-				   name, namelen))
+		if (fdt_string_eq_(fdt, fdt32_to_cpu(prop->nameoff),
+				   name, namelen)) {
+			if (poffset)
+				*poffset = offset;
 			return prop;
+		}
 	}
 
 	if (lenp)
@@ -281,6 +353,25 @@ const struct fdt_property *fdt_get_property_namelen(const void *fdt,
 	return NULL;
 }
 
+
+const struct fdt_property *fdt_get_property_namelen(const void *fdt,
+						    int offset,
+						    const char *name,
+						    int namelen, int *lenp)
+{
+	/* Prior to version 16, properties may need realignment
+	 * and this API does not work. fdt_getprop_*() will, however. */
+	if (fdt_version(fdt) < 0x10) {
+		if (lenp)
+			*lenp = -FDT_ERR_BADVERSION;
+		return NULL;
+	}
+
+	return fdt_get_property_namelen_(fdt, offset, name, namelen, lenp,
+					 NULL);
+}
+
+
 const struct fdt_property *fdt_get_property(const void *fdt,
 					    int nodeoffset,
 					    const char *name, int *lenp)
@@ -292,12 +383,18 @@ const struct fdt_property *fdt_get_property(const void *fdt,
 const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
 				const char *name, int namelen, int *lenp)
 {
+	int poffset;
 	const struct fdt_property *prop;
 
-	prop = fdt_get_property_namelen(fdt, nodeoffset, name, namelen, lenp);
-	if (! prop)
+	prop = fdt_get_property_namelen_(fdt, nodeoffset, name, namelen, lenp,
+					 &poffset);
+	if (!prop)
 		return NULL;
 
+	/* Handle realignment */
+	if (fdt_version(fdt) < 0x10 && (poffset + sizeof(*prop)) % 8 &&
+	    fdt32_to_cpu(prop->len) >= 8)
+		return prop->data + 4;
 	return prop->data;
 }
 
@@ -306,11 +403,16 @@ const void *fdt_getprop_by_offset(const void *fdt, int offset,
 {
 	const struct fdt_property *prop;
 
-	prop = fdt_get_property_by_offset(fdt, offset, lenp);
+	prop = fdt_get_property_by_offset_(fdt, offset, lenp);
 	if (!prop)
 		return NULL;
 	if (namep)
 		*namep = fdt_string(fdt, fdt32_to_cpu(prop->nameoff));
+
+	/* Handle realignment */
+	if (fdt_version(fdt) < 0x10 && (offset + sizeof(*prop)) % 8 &&
+	    fdt32_to_cpu(prop->len) >= 8)
+		return prop->data + 4;
 	return prop->data;
 }
 
@@ -532,6 +634,106 @@ int fdt_stringlist_contains(const char *strlist, int listlen, const char *str)
 	return 0;
 }
 
+int fdt_stringlist_count(const void *fdt, int nodeoffset, const char *property)
+{
+	const char *list, *end;
+	int length, count = 0;
+
+	list = fdt_getprop(fdt, nodeoffset, property, &length);
+	if (!list)
+		return length;
+
+	end = list + length;
+
+	while (list < end) {
+		length = strnlen(list, end - list) + 1;
+
+		/* Abort if the last string isn't properly NUL-terminated. */
+		if (list + length > end)
+			return -FDT_ERR_BADVALUE;
+
+		list += length;
+		count++;
+	}
+
+	return count;
+}
+
+int fdt_stringlist_search(const void *fdt, int nodeoffset, const char *property,
+			  const char *string)
+{
+	int length, len, idx = 0;
+	const char *list, *end;
+
+	list = fdt_getprop(fdt, nodeoffset, property, &length);
+	if (!list)
+		return length;
+
+	len = strlen(string) + 1;
+	end = list + length;
+
+	while (list < end) {
+		length = strnlen(list, end - list) + 1;
+
+		/* Abort if the last string isn't properly NUL-terminated. */
+		if (list + length > end)
+			return -FDT_ERR_BADVALUE;
+
+		if (length == len && memcmp(list, string, length) == 0)
+			return idx;
+
+		list += length;
+		idx++;
+	}
+
+	return -FDT_ERR_NOTFOUND;
+}
+
+const char *fdt_stringlist_get(const void *fdt, int nodeoffset,
+			       const char *property, int idx,
+			       int *lenp)
+{
+	const char *list, *end;
+	int length;
+
+	list = fdt_getprop(fdt, nodeoffset, property, &length);
+	if (!list) {
+		if (lenp)
+			*lenp = length;
+
+		return NULL;
+	}
+
+	end = list + length;
+
+	while (list < end) {
+		length = strnlen(list, end - list) + 1;
+
+		/* Abort if the last string isn't properly NUL-terminated. */
+		if (list + length > end) {
+			if (lenp)
+				*lenp = -FDT_ERR_BADVALUE;
+
+			return NULL;
+		}
+
+		if (idx == 0) {
+			if (lenp)
+				*lenp = length - 1;
+
+			return list;
+		}
+
+		list += length;
+		idx--;
+	}
+
+	if (lenp)
+		*lenp = -FDT_ERR_NOTFOUND;
+
+	return NULL;
+}
+
 int fdt_node_check_compatible(const void *fdt, int nodeoffset,
 			      const char *compatible)
 {
@@ -541,10 +743,8 @@ int fdt_node_check_compatible(const void *fdt, int nodeoffset,
 	prop = fdt_getprop(fdt, nodeoffset, "compatible", &len);
 	if (!prop)
 		return len;
-	if (fdt_stringlist_contains(prop, len, compatible))
-		return 0;
-	else
-		return 1;
+
+	return !fdt_stringlist_contains(prop, len, compatible);
 }
 
 int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
diff --git a/scripts/dtc/fdt_rw.c b/scripts/dtc/fdt_rw.c
index 70adec6c37..9b829051e4 100644
--- a/scripts/dtc/fdt_rw.c
+++ b/scripts/dtc/fdt_rw.c
@@ -55,8 +55,8 @@
 
 #include "libfdt_internal.h"
 
-static int _fdt_blocks_misordered(const void *fdt,
-			      int mem_rsv_size, int struct_size)
+static int fdt_blocks_misordered_(const void *fdt,
+				  int mem_rsv_size, int struct_size)
 {
 	return (fdt_off_mem_rsvmap(fdt) < FDT_ALIGN(sizeof(struct fdt_header), 8))
 		|| (fdt_off_dt_struct(fdt) <
@@ -67,13 +67,13 @@ static int _fdt_blocks_misordered(const void *fdt,
 		    (fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt)));
 }
 
-static int _fdt_rw_check_header(void *fdt)
+static int fdt_rw_check_header_(void *fdt)
 {
 	FDT_CHECK_HEADER(fdt);
 
 	if (fdt_version(fdt) < 17)
 		return -FDT_ERR_BADVERSION;
-	if (_fdt_blocks_misordered(fdt, sizeof(struct fdt_reserve_entry),
+	if (fdt_blocks_misordered_(fdt, sizeof(struct fdt_reserve_entry),
 				   fdt_size_dt_struct(fdt)))
 		return -FDT_ERR_BADLAYOUT;
 	if (fdt_version(fdt) > 17)
@@ -84,35 +84,37 @@ static int _fdt_rw_check_header(void *fdt)
 
 #define FDT_RW_CHECK_HEADER(fdt) \
 	{ \
-		int __err; \
-		if ((__err = _fdt_rw_check_header(fdt)) != 0) \
-			return __err; \
+		int err_; \
+		if ((err_ = fdt_rw_check_header_(fdt)) != 0) \
+			return err_; \
 	}
 
-static inline int _fdt_data_size(void *fdt)
+static inline int fdt_data_size_(void *fdt)
 {
 	return fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
 }
 
-static int _fdt_splice(void *fdt, void *splicepoint, int oldlen, int newlen)
+static int fdt_splice_(void *fdt, void *splicepoint, int oldlen, int newlen)
 {
 	char *p = splicepoint;
-	char *end = (char *)fdt + _fdt_data_size(fdt);
+	char *end = (char *)fdt + fdt_data_size_(fdt);
 
 	if (((p + oldlen) < p) || ((p + oldlen) > end))
 		return -FDT_ERR_BADOFFSET;
+	if ((p < (char *)fdt) || ((end - oldlen + newlen) < (char *)fdt))
+		return -FDT_ERR_BADOFFSET;
 	if ((end - oldlen + newlen) > ((char *)fdt + fdt_totalsize(fdt)))
 		return -FDT_ERR_NOSPACE;
 	memmove(p + newlen, p + oldlen, end - p - oldlen);
 	return 0;
 }
 
-static int _fdt_splice_mem_rsv(void *fdt, struct fdt_reserve_entry *p,
+static int fdt_splice_mem_rsv_(void *fdt, struct fdt_reserve_entry *p,
 			       int oldn, int newn)
 {
 	int delta = (newn - oldn) * sizeof(*p);
 	int err;
-	err = _fdt_splice(fdt, p, oldn * sizeof(*p), newn * sizeof(*p));
+	err = fdt_splice_(fdt, p, oldn * sizeof(*p), newn * sizeof(*p));
 	if (err)
 		return err;
 	fdt_set_off_dt_struct(fdt, fdt_off_dt_struct(fdt) + delta);
@@ -120,13 +122,13 @@ static int _fdt_splice_mem_rsv(void *fdt, struct fdt_reserve_entry *p,
 	return 0;
 }
 
-static int _fdt_splice_struct(void *fdt, void *p,
+static int fdt_splice_struct_(void *fdt, void *p,
 			      int oldlen, int newlen)
 {
 	int delta = newlen - oldlen;
 	int err;
 
-	if ((err = _fdt_splice(fdt, p, oldlen, newlen)))
+	if ((err = fdt_splice_(fdt, p, oldlen, newlen)))
 		return err;
 
 	fdt_set_size_dt_struct(fdt, fdt_size_dt_struct(fdt) + delta);
@@ -134,20 +136,20 @@ static int _fdt_splice_struct(void *fdt, void *p,
 	return 0;
 }
 
-static int _fdt_splice_string(void *fdt, int newlen)
+static int fdt_splice_string_(void *fdt, int newlen)
 {
 	void *p = (char *)fdt
 		+ fdt_off_dt_strings(fdt) + fdt_size_dt_strings(fdt);
 	int err;
 
-	if ((err = _fdt_splice(fdt, p, 0, newlen)))
+	if ((err = fdt_splice_(fdt, p, 0, newlen)))
 		return err;
 
 	fdt_set_size_dt_strings(fdt, fdt_size_dt_strings(fdt) + newlen);
 	return 0;
 }
 
-static int _fdt_find_add_string(void *fdt, const char *s)
+static int fdt_find_add_string_(void *fdt, const char *s)
 {
 	char *strtab = (char *)fdt + fdt_off_dt_strings(fdt);
 	const char *p;
@@ -155,13 +157,13 @@ static int _fdt_find_add_string(void *fdt, const char *s)
 	int len = strlen(s) + 1;
 	int err;
 
-	p = _fdt_find_string(strtab, fdt_size_dt_strings(fdt), s);
+	p = fdt_find_string_(strtab, fdt_size_dt_strings(fdt), s);
 	if (p)
 		/* found it */
 		return (p - strtab);
 
 	new = strtab + fdt_size_dt_strings(fdt);
-	err = _fdt_splice_string(fdt, len);
+	err = fdt_splice_string_(fdt, len);
 	if (err)
 		return err;
 
@@ -176,8 +178,8 @@ int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size)
 
 	FDT_RW_CHECK_HEADER(fdt);
 
-	re = _fdt_mem_rsv_w(fdt, fdt_num_mem_rsv(fdt));
-	err = _fdt_splice_mem_rsv(fdt, re, 0, 1);
+	re = fdt_mem_rsv_w_(fdt, fdt_num_mem_rsv(fdt));
+	err = fdt_splice_mem_rsv_(fdt, re, 0, 1);
 	if (err)
 		return err;
 
@@ -188,31 +190,27 @@ int fdt_add_mem_rsv(void *fdt, uint64_t address, uint64_t size)
 
 int fdt_del_mem_rsv(void *fdt, int n)
 {
-	struct fdt_reserve_entry *re = _fdt_mem_rsv_w(fdt, n);
-	int err;
+	struct fdt_reserve_entry *re = fdt_mem_rsv_w_(fdt, n);
 
 	FDT_RW_CHECK_HEADER(fdt);
 
 	if (n >= fdt_num_mem_rsv(fdt))
 		return -FDT_ERR_NOTFOUND;
 
-	err = _fdt_splice_mem_rsv(fdt, re, 1, 0);
-	if (err)
-		return err;
-	return 0;
+	return fdt_splice_mem_rsv_(fdt, re, 1, 0);
 }
 
-static int _fdt_resize_property(void *fdt, int nodeoffset, const char *name,
+static int fdt_resize_property_(void *fdt, int nodeoffset, const char *name,
 				int len, struct fdt_property **prop)
 {
 	int oldlen;
 	int err;
 
 	*prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
-	if (! (*prop))
+	if (!*prop)
 		return oldlen;
 
-	if ((err = _fdt_splice_struct(fdt, (*prop)->data, FDT_TAGALIGN(oldlen),
+	if ((err = fdt_splice_struct_(fdt, (*prop)->data, FDT_TAGALIGN(oldlen),
 				      FDT_TAGALIGN(len))))
 		return err;
 
@@ -220,7 +218,7 @@ static int _fdt_resize_property(void *fdt, int nodeoffset, const char *name,
 	return 0;
 }
 
-static int _fdt_add_property(void *fdt, int nodeoffset, const char *name,
+static int fdt_add_property_(void *fdt, int nodeoffset, const char *name,
 			     int len, struct fdt_property **prop)
 {
 	int proplen;
@@ -228,17 +226,17 @@ static int _fdt_add_property(void *fdt, int nodeoffset, const char *name,
 	int namestroff;
 	int err;
 
-	if ((nextoffset = _fdt_check_node_offset(fdt, nodeoffset)) < 0)
+	if ((nextoffset = fdt_check_node_offset_(fdt, nodeoffset)) < 0)
 		return nextoffset;
 
-	namestroff = _fdt_find_add_string(fdt, name);
+	namestroff = fdt_find_add_string_(fdt, name);
 	if (namestroff < 0)
 		return namestroff;
 
-	*prop = _fdt_offset_ptr_w(fdt, nextoffset);
+	*prop = fdt_offset_ptr_w_(fdt, nextoffset);
 	proplen = sizeof(**prop) + FDT_TAGALIGN(len);
 
-	err = _fdt_splice_struct(fdt, *prop, 0, proplen);
+	err = fdt_splice_struct_(fdt, *prop, 0, proplen);
 	if (err)
 		return err;
 
@@ -262,7 +260,7 @@ int fdt_set_name(void *fdt, int nodeoffset, const char *name)
 
 	newlen = strlen(name);
 
-	err = _fdt_splice_struct(fdt, namep, FDT_TAGALIGN(oldlen+1),
+	err = fdt_splice_struct_(fdt, namep, FDT_TAGALIGN(oldlen+1),
 				 FDT_TAGALIGN(newlen+1));
 	if (err)
 		return err;
@@ -271,21 +269,36 @@ int fdt_set_name(void *fdt, int nodeoffset, const char *name)
 	return 0;
 }
 
-int fdt_setprop(void *fdt, int nodeoffset, const char *name,
-		const void *val, int len)
+int fdt_setprop_placeholder(void *fdt, int nodeoffset, const char *name,
+			    int len, void **prop_data)
 {
 	struct fdt_property *prop;
 	int err;
 
 	FDT_RW_CHECK_HEADER(fdt);
 
-	err = _fdt_resize_property(fdt, nodeoffset, name, len, &prop);
+	err = fdt_resize_property_(fdt, nodeoffset, name, len, &prop);
 	if (err == -FDT_ERR_NOTFOUND)
-		err = _fdt_add_property(fdt, nodeoffset, name, len, &prop);
+		err = fdt_add_property_(fdt, nodeoffset, name, len, &prop);
+	if (err)
+		return err;
+
+	*prop_data = prop->data;
+	return 0;
+}
+
+int fdt_setprop(void *fdt, int nodeoffset, const char *name,
+		const void *val, int len)
+{
+	void *prop_data;
+	int err;
+
+	err = fdt_setprop_placeholder(fdt, nodeoffset, name, len, &prop_data);
 	if (err)
 		return err;
 
-	memcpy(prop->data, val, len);
+	if (len)
+		memcpy(prop_data, val, len);
 	return 0;
 }
 
@@ -300,7 +313,7 @@ int fdt_appendprop(void *fdt, int nodeoffset, const char *name,
 	prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
 	if (prop) {
 		newlen = len + oldlen;
-		err = _fdt_splice_struct(fdt, prop->data,
+		err = fdt_splice_struct_(fdt, prop->data,
 					 FDT_TAGALIGN(oldlen),
 					 FDT_TAGALIGN(newlen));
 		if (err)
@@ -308,7 +321,7 @@ int fdt_appendprop(void *fdt, int nodeoffset, const char *name,
 		prop->len = cpu_to_fdt32(newlen);
 		memcpy(prop->data + oldlen, val, len);
 	} else {
-		err = _fdt_add_property(fdt, nodeoffset, name, len, &prop);
+		err = fdt_add_property_(fdt, nodeoffset, name, len, &prop);
 		if (err)
 			return err;
 		memcpy(prop->data, val, len);
@@ -324,11 +337,11 @@ int fdt_delprop(void *fdt, int nodeoffset, const char *name)
 	FDT_RW_CHECK_HEADER(fdt);
 
 	prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
-	if (! prop)
+	if (!prop)
 		return len;
 
 	proplen = sizeof(*prop) + FDT_TAGALIGN(len);
-	return _fdt_splice_struct(fdt, prop, proplen, 0);
+	return fdt_splice_struct_(fdt, prop, proplen, 0);
 }
 
 int fdt_add_subnode_namelen(void *fdt, int parentoffset,
@@ -356,10 +369,10 @@ int fdt_add_subnode_namelen(void *fdt, int parentoffset,
 		tag = fdt_next_tag(fdt, offset, &nextoffset);
 	} while ((tag == FDT_PROP) || (tag == FDT_NOP));
 
-	nh = _fdt_offset_ptr_w(fdt, offset);
+	nh = fdt_offset_ptr_w_(fdt, offset);
 	nodelen = sizeof(*nh) + FDT_TAGALIGN(namelen+1) + FDT_TAGSIZE;
 
-	err = _fdt_splice_struct(fdt, nh, 0, nodelen);
+	err = fdt_splice_struct_(fdt, nh, 0, nodelen);
 	if (err)
 		return err;
 
@@ -383,15 +396,15 @@ int fdt_del_node(void *fdt, int nodeoffset)
 
 	FDT_RW_CHECK_HEADER(fdt);
 
-	endoffset = _fdt_node_end_offset(fdt, nodeoffset);
+	endoffset = fdt_node_end_offset_(fdt, nodeoffset);
 	if (endoffset < 0)
 		return endoffset;
 
-	return _fdt_splice_struct(fdt, _fdt_offset_ptr_w(fdt, nodeoffset),
+	return fdt_splice_struct_(fdt, fdt_offset_ptr_w_(fdt, nodeoffset),
 				  endoffset - nodeoffset, 0);
 }
 
-static void _fdt_packblocks(const char *old, char *new,
+static void fdt_packblocks_(const char *old, char *new,
 			    int mem_rsv_size, int struct_size)
 {
 	int mem_rsv_off, struct_off, strings_off;
@@ -437,7 +450,7 @@ int fdt_open_into(const void *fdt, void *buf, int bufsize)
 			return struct_size;
 	}
 
-	if (!_fdt_blocks_misordered(fdt, mem_rsv_size, struct_size)) {
+	if (!fdt_blocks_misordered_(fdt, mem_rsv_size, struct_size)) {
 		/* no further work necessary */
 		err = fdt_move(fdt, buf, bufsize);
 		if (err)
@@ -465,7 +478,7 @@ int fdt_open_into(const void *fdt, void *buf, int bufsize)
 			return -FDT_ERR_NOSPACE;
 	}
 
-	_fdt_packblocks(fdt, tmp, mem_rsv_size, struct_size);
+	fdt_packblocks_(fdt, tmp, mem_rsv_size, struct_size);
 	memmove(buf, tmp, newsize);
 
 	fdt_set_magic(buf, FDT_MAGIC);
@@ -485,8 +498,8 @@ int fdt_pack(void *fdt)
 
 	mem_rsv_size = (fdt_num_mem_rsv(fdt)+1)
 		* sizeof(struct fdt_reserve_entry);
-	_fdt_packblocks(fdt, fdt, mem_rsv_size, fdt_size_dt_struct(fdt));
-	fdt_set_totalsize(fdt, _fdt_data_size(fdt));
+	fdt_packblocks_(fdt, fdt, mem_rsv_size, fdt_size_dt_struct(fdt));
+	fdt_set_totalsize(fdt, fdt_data_size_(fdt));
 
 	return 0;
 }
diff --git a/scripts/dtc/fdt_strerror.c b/scripts/dtc/fdt_strerror.c
index e6c3ceee8c..9677a1887e 100644
--- a/scripts/dtc/fdt_strerror.c
+++ b/scripts/dtc/fdt_strerror.c
@@ -69,6 +69,7 @@ static struct fdt_errtabent fdt_errtable[] = {
 
 	FDT_ERRTABENT(FDT_ERR_BADOFFSET),
 	FDT_ERRTABENT(FDT_ERR_BADPATH),
+	FDT_ERRTABENT(FDT_ERR_BADPHANDLE),
 	FDT_ERRTABENT(FDT_ERR_BADSTATE),
 
 	FDT_ERRTABENT(FDT_ERR_TRUNCATED),
@@ -76,6 +77,11 @@ static struct fdt_errtabent fdt_errtable[] = {
 	FDT_ERRTABENT(FDT_ERR_BADVERSION),
 	FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
 	FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
+	FDT_ERRTABENT(FDT_ERR_INTERNAL),
+	FDT_ERRTABENT(FDT_ERR_BADNCELLS),
+	FDT_ERRTABENT(FDT_ERR_BADVALUE),
+	FDT_ERRTABENT(FDT_ERR_BADOVERLAY),
+	FDT_ERRTABENT(FDT_ERR_NOPHANDLES),
 };
 #define FDT_ERRTABSIZE	(sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
 
diff --git a/scripts/dtc/fdt_sw.c b/scripts/dtc/fdt_sw.c
index 6a804859fd..6d33cc29d0 100644
--- a/scripts/dtc/fdt_sw.c
+++ b/scripts/dtc/fdt_sw.c
@@ -55,7 +55,7 @@
 
 #include "libfdt_internal.h"
 
-static int _fdt_sw_check_header(void *fdt)
+static int fdt_sw_check_header_(void *fdt)
 {
 	if (fdt_magic(fdt) != FDT_SW_MAGIC)
 		return -FDT_ERR_BADMAGIC;
@@ -66,11 +66,11 @@ static int _fdt_sw_check_header(void *fdt)
 #define FDT_SW_CHECK_HEADER(fdt) \
 	{ \
 		int err; \
-		if ((err = _fdt_sw_check_header(fdt)) != 0) \
+		if ((err = fdt_sw_check_header_(fdt)) != 0) \
 			return err; \
 	}
 
-static void *_fdt_grab_space(void *fdt, size_t len)
+static void *fdt_grab_space_(void *fdt, size_t len)
 {
 	int offset = fdt_size_dt_struct(fdt);
 	int spaceleft;
@@ -82,7 +82,7 @@ static void *_fdt_grab_space(void *fdt, size_t len)
 		return NULL;
 
 	fdt_set_size_dt_struct(fdt, offset + len);
-	return _fdt_offset_ptr_w(fdt, offset);
+	return fdt_offset_ptr_w_(fdt, offset);
 }
 
 int fdt_create(void *buf, int bufsize)
@@ -174,7 +174,7 @@ int fdt_begin_node(void *fdt, const char *name)
 
 	FDT_SW_CHECK_HEADER(fdt);
 
-	nh = _fdt_grab_space(fdt, sizeof(*nh) + FDT_TAGALIGN(namelen));
+	nh = fdt_grab_space_(fdt, sizeof(*nh) + FDT_TAGALIGN(namelen));
 	if (! nh)
 		return -FDT_ERR_NOSPACE;
 
@@ -189,7 +189,7 @@ int fdt_end_node(void *fdt)
 
 	FDT_SW_CHECK_HEADER(fdt);
 
-	en = _fdt_grab_space(fdt, FDT_TAGSIZE);
+	en = fdt_grab_space_(fdt, FDT_TAGSIZE);
 	if (! en)
 		return -FDT_ERR_NOSPACE;
 
@@ -197,7 +197,7 @@ int fdt_end_node(void *fdt)
 	return 0;
 }
 
-static int _fdt_find_add_string(void *fdt, const char *s)
+static int fdt_find_add_string_(void *fdt, const char *s)
 {
 	char *strtab = (char *)fdt + fdt_totalsize(fdt);
 	const char *p;
@@ -205,7 +205,7 @@ static int _fdt_find_add_string(void *fdt, const char *s)
 	int len = strlen(s) + 1;
 	int struct_top, offset;
 
-	p = _fdt_find_string(strtab - strtabsize, strtabsize, s);
+	p = fdt_find_string_(strtab - strtabsize, strtabsize, s);
 	if (p)
 		return p - strtab;
 
@@ -220,25 +220,37 @@ static int _fdt_find_add_string(void *fdt, const char *s)
 	return offset;
 }
 
-int fdt_property(void *fdt, const char *name, const void *val, int len)
+int fdt_property_placeholder(void *fdt, const char *name, int len, void **valp)
 {
 	struct fdt_property *prop;
 	int nameoff;
 
 	FDT_SW_CHECK_HEADER(fdt);
 
-	nameoff = _fdt_find_add_string(fdt, name);
+	nameoff = fdt_find_add_string_(fdt, name);
 	if (nameoff == 0)
 		return -FDT_ERR_NOSPACE;
 
-	prop = _fdt_grab_space(fdt, sizeof(*prop) + FDT_TAGALIGN(len));
+	prop = fdt_grab_space_(fdt, sizeof(*prop) + FDT_TAGALIGN(len));
 	if (! prop)
 		return -FDT_ERR_NOSPACE;
 
 	prop->tag = cpu_to_fdt32(FDT_PROP);
 	prop->nameoff = cpu_to_fdt32(nameoff);
 	prop->len = cpu_to_fdt32(len);
-	memcpy(prop->data, val, len);
+	*valp = prop->data;
+	return 0;
+}
+
+int fdt_property(void *fdt, const char *name, const void *val, int len)
+{
+	void *ptr;
+	int ret;
+
+	ret = fdt_property_placeholder(fdt, name, len, &ptr);
+	if (ret)
+		return ret;
+	memcpy(ptr, val, len);
 	return 0;
 }
 
@@ -253,7 +265,7 @@ int fdt_finish(void *fdt)
 	FDT_SW_CHECK_HEADER(fdt);
 
 	/* Add terminator */
-	end = _fdt_grab_space(fdt, sizeof(*end));
+	end = fdt_grab_space_(fdt, sizeof(*end));
 	if (! end)
 		return -FDT_ERR_NOSPACE;
 	*end = cpu_to_fdt32(FDT_END);
@@ -269,7 +281,7 @@ int fdt_finish(void *fdt)
 	while ((tag = fdt_next_tag(fdt, offset, &nextoffset)) != FDT_END) {
 		if (tag == FDT_PROP) {
 			struct fdt_property *prop =
-				_fdt_offset_ptr_w(fdt, offset);
+				fdt_offset_ptr_w_(fdt, offset);
 			int nameoff;
 
 			nameoff = fdt32_to_cpu(prop->nameoff);
diff --git a/scripts/dtc/fdt_wip.c b/scripts/dtc/fdt_wip.c
index c5bbb68d32..534c1cbbb2 100644
--- a/scripts/dtc/fdt_wip.c
+++ b/scripts/dtc/fdt_wip.c
@@ -55,24 +55,45 @@
 
 #include "libfdt_internal.h"
 
+int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,
+					const char *name, int namelen,
+					uint32_t idx, const void *val,
+					int len)
+{
+	void *propval;
+	int proplen;
+
+	propval = fdt_getprop_namelen_w(fdt, nodeoffset, name, namelen,
+					&proplen);
+	if (!propval)
+		return proplen;
+
+	if (proplen < (len + idx))
+		return -FDT_ERR_NOSPACE;
+
+	memcpy((char *)propval + idx, val, len);
+	return 0;
+}
+
 int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
 			const void *val, int len)
 {
-	void *propval;
+	const void *propval;
 	int proplen;
 
-	propval = fdt_getprop_w(fdt, nodeoffset, name, &proplen);
-	if (! propval)
+	propval = fdt_getprop(fdt, nodeoffset, name, &proplen);
+	if (!propval)
 		return proplen;
 
 	if (proplen != len)
 		return -FDT_ERR_NOSPACE;
 
-	memcpy(propval, val, len);
-	return 0;
+	return fdt_setprop_inplace_namelen_partial(fdt, nodeoffset, name,
+						   strlen(name), 0,
+						   val, len);
 }
 
-static void _fdt_nop_region(void *start, int len)
+static void fdt_nop_region_(void *start, int len)
 {
 	fdt32_t *p;
 
@@ -86,15 +107,15 @@ int fdt_nop_property(void *fdt, int nodeoffset, const char *name)
 	int len;
 
 	prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
-	if (! prop)
+	if (!prop)
 		return len;
 
-	_fdt_nop_region(prop, len + sizeof(*prop));
+	fdt_nop_region_(prop, len + sizeof(*prop));
 
 	return 0;
 }
 
-int _fdt_node_end_offset(void *fdt, int offset)
+int fdt_node_end_offset_(void *fdt, int offset)
 {
 	int depth = 0;
 
@@ -108,11 +129,11 @@ int fdt_nop_node(void *fdt, int nodeoffset)
 {
 	int endoffset;
 
-	endoffset = _fdt_node_end_offset(fdt, nodeoffset);
+	endoffset = fdt_node_end_offset_(fdt, nodeoffset);
 	if (endoffset < 0)
 		return endoffset;
 
-	_fdt_nop_region(fdt_offset_ptr_w(fdt, nodeoffset, 0),
+	fdt_nop_region_(fdt_offset_ptr_w(fdt, nodeoffset, 0),
 			endoffset - nodeoffset);
 	return 0;
 }
diff --git a/scripts/dtc/fdtdump.c b/scripts/dtc/fdtdump.c
index 95a6a20160..7d460a50b5 100644
--- a/scripts/dtc/fdtdump.c
+++ b/scripts/dtc/fdtdump.c
@@ -1,17 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * fdtdump.c - Contributed by Pantelis Antoniou <pantelis.antoniou AT gmail.com>
  */
 
-#include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
 
-#include <libfdt.h>
-#include <libfdt_env.h>
 #include <fdt.h>
+#include <libfdt_env.h>
 
 #include "util.h"
 
@@ -19,29 +18,33 @@
 #define PALIGN(p, a)	((void *)(ALIGN((unsigned long)(p), (a))))
 #define GET_CELL(p)	(p += 4, *((const uint32_t *)(p-4)))
 
-static const char *tagname(uint32_t tag)
+static void print_data(const char *data, int len)
 {
-	static const char * const names[] = {
-#define TN(t) [t] = #t
-		TN(FDT_BEGIN_NODE),
-		TN(FDT_END_NODE),
-		TN(FDT_PROP),
-		TN(FDT_NOP),
-		TN(FDT_END),
-#undef TN
-	};
-	if (tag < ARRAY_SIZE(names))
-		if (names[tag])
-			return names[tag];
-	return "FDT_???";
+	int i;
+	const char *p = data;
+
+	/* no data, don't print */
+	if (len == 0)
+		return;
+
+	if (util_is_printable_string(data, len)) {
+		printf(" = \"%s\"", (const char *)data);
+	} else if ((len % 4) == 0) {
+		printf(" = <");
+		for (i = 0; i < len; i += 4)
+			printf("0x%08x%s", fdt32_to_cpu(GET_CELL(p)),
+			       i < (len - 4) ? " " : "");
+		printf(">");
+	} else {
+		printf(" = [");
+		for (i = 0; i < len; i++)
+			printf("%02x%s", *p++, i < len - 1 ? " " : "");
+		printf("]");
+	}
 }
 
-#define dumpf(fmt, args...) \
-	do { if (debug) printf("// " fmt, ## args); } while (0)
-
-static void dump_blob(void *blob, bool debug)
+static void dump_blob(void *blob)
 {
-	uintptr_t blob_off = (uintptr_t)blob;
 	struct fdt_header *bph = blob;
 	uint32_t off_mem_rsvmap = fdt32_to_cpu(bph->off_mem_rsvmap);
 	uint32_t off_dt = fdt32_to_cpu(bph->off_dt_struct);
@@ -88,15 +91,14 @@ static void dump_blob(void *blob, bool debug)
 		if (addr == 0 && size == 0)
 			break;
 
-		printf("/memreserve/ %#llx %#llx;\n",
+		printf("/memreserve/ %llx %llx;\n",
 		       (unsigned long long)addr, (unsigned long long)size);
 	}
 
 	p = p_struct;
 	while ((tag = fdt32_to_cpu(GET_CELL(p))) != FDT_END) {
 
-		dumpf("%04zx: tag: 0x%08x (%s)\n",
-		        (uintptr_t)p - blob_off - 4, tag, tagname(tag));
+		/* printf("tag: 0x%08x (%d)\n", tag, p - p_struct); */
 
 		if (tag == FDT_BEGIN_NODE) {
 			s = p;
@@ -135,93 +137,27 @@ static void dump_blob(void *blob, bool debug)
 
 		p = PALIGN(p + sz, 4);
 
-		dumpf("%04zx: string: %s\n", (uintptr_t)s - blob_off, s);
-		dumpf("%04zx: value\n", (uintptr_t)t - blob_off);
 		printf("%*s%s", depth * shift, "", s);
-		utilfdt_print_data(t, sz);
+		print_data(t, sz);
 		printf(";\n");
 	}
 }
 
-/* Usage related data. */
-static const char usage_synopsis[] = "fdtdump [options] <file>";
-static const char usage_short_opts[] = "ds" USAGE_COMMON_SHORT_OPTS;
-static struct option const usage_long_opts[] = {
-	{"debug",            no_argument, NULL, 'd'},
-	{"scan",             no_argument, NULL, 's'},
-	USAGE_COMMON_LONG_OPTS
-};
-static const char * const usage_opts_help[] = {
-	"Dump debug information while decoding the file",
-	"Scan for an embedded fdt in file",
-	USAGE_COMMON_OPTS_HELP
-};
 
 int main(int argc, char *argv[])
 {
-	int opt;
-	const char *file;
 	char *buf;
-	bool debug = false;
-	bool scan = false;
-	off_t len;
-
-	while ((opt = util_getopt_long()) != EOF) {
-		switch (opt) {
-		case_USAGE_COMMON_FLAGS
 
-		case 'd':
-			debug = true;
-			break;
-		case 's':
-			scan = true;
-			break;
-		}
-	}
-	if (optind != argc - 1)
-		usage("missing input filename");
-	file = argv[optind];
-
-	buf = utilfdt_read_len(file, &len);
-	if (!buf)
-		die("could not read: %s\n", file);
-
-	/* try and locate an embedded fdt in a bigger blob */
-	if (scan) {
-		unsigned char smagic[4];
-		char *p = buf;
-		char *endp = buf + len;
-
-		fdt_set_magic(smagic, FDT_MAGIC);
-
-		/* poor man's memmem */
-		while (true) {
-			p = memchr(p, smagic[0], endp - p - 4);
-			if (!p)
-				break;
-			if (fdt_magic(p) == FDT_MAGIC) {
-				/* try and validate the main struct */
-				off_t this_len = endp - p;
-				fdt32_t max_version = 17;
-				if (fdt_version(p) <= max_version &&
-				    fdt_last_comp_version(p) < max_version &&
-				    fdt_totalsize(p) < this_len &&
-				    fdt_off_dt_struct(p) < this_len &&
-					fdt_off_dt_strings(p) < this_len)
-					break;
-				if (debug)
-					printf("%s: skipping fdt magic at offset %#zx\n",
-						file, p - buf);
-			}
-			++p;
-		}
-		if (!p)
-			die("%s: could not locate fdt magic\n", file);
-		printf("%s: found fdt at offset %#zx\n", file, p - buf);
-		buf = p;
+	if (argc < 2) {
+		fprintf(stderr, "supply input filename\n");
+		return 5;
 	}
 
-	dump_blob(buf, debug);
+	buf = utilfdt_read(argv[1]);
+	if (buf)
+		dump_blob(buf);
+	else
+		return 10;
 
 	return 0;
 }
diff --git a/scripts/dtc/fdtget.c b/scripts/dtc/fdtget.c
index 4377419224..c2fbab2a54 100644
--- a/scripts/dtc/fdtget.c
+++ b/scripts/dtc/fdtget.c
@@ -277,33 +277,33 @@ static int do_fdtget(struct display_info *disp, const char *filename,
 	return 0;
 }
 
-/* Usage related data. */
-static const char usage_synopsis[] =
-	"read values from device tree\n"
+static const char *usage_msg =
+	"fdtget - read values from device tree\n"
+	"\n"
+	"Each value is printed on a new line.\n\n"
+	"Usage:\n"
 	"	fdtget <options> <dt file> [<node> <property>]...\n"
 	"	fdtget -p <options> <dt file> [<node> ]...\n"
-	"\n"
-	"Each value is printed on a new line.\n"
+	"Options:\n"
+	"\t-t <type>\tType of data\n"
+	"\t-p\t\tList properties for each node\n"
+	"\t-l\t\tList subnodes for each node\n"
+	"\t-d\t\tDefault value to display when the property is "
+			"missing\n"
+	"\t-h\t\tPrint this help\n\n"
 	USAGE_TYPE_MSG;
-static const char usage_short_opts[] = "t:pld:" USAGE_COMMON_SHORT_OPTS;
-static struct option const usage_long_opts[] = {
-	{"type",              a_argument, NULL, 't'},
-	{"properties",       no_argument, NULL, 'p'},
-	{"list",             no_argument, NULL, 'l'},
-	{"default",           a_argument, NULL, 'd'},
-	USAGE_COMMON_LONG_OPTS,
-};
-static const char * const usage_opts_help[] = {
-	"Type of data",
-	"List properties for each node",
-	"List subnodes for each node",
-	"Default value to display when the property is missing",
-	USAGE_COMMON_OPTS_HELP
-};
+
+static void usage(const char *msg)
+{
+	if (msg)
+		fprintf(stderr, "Error: %s\n\n", msg);
+
+	fprintf(stderr, "%s", usage_msg);
+	exit(2);
+}
 
 int main(int argc, char *argv[])
 {
-	int opt;
 	char *filename = NULL;
 	struct display_info disp;
 	int args_per_step = 2;
@@ -312,14 +312,20 @@ int main(int argc, char *argv[])
 	memset(&disp, '\0', sizeof(disp));
 	disp.size = -1;
 	disp.mode = MODE_SHOW_VALUE;
-	while ((opt = util_getopt_long()) != EOF) {
-		switch (opt) {
-		case_USAGE_COMMON_FLAGS
+	for (;;) {
+		int c = getopt(argc, argv, "d:hlpt:");
+		if (c == -1)
+			break;
+
+		switch (c) {
+		case 'h':
+		case '?':
+			usage(NULL);
 
 		case 't':
 			if (utilfdt_decode_type(optarg, &disp.type,
 					&disp.size))
-				usage("invalid type string");
+				usage("Invalid type string");
 			break;
 
 		case 'p':
@@ -341,7 +347,7 @@ int main(int argc, char *argv[])
 	if (optind < argc)
 		filename = argv[optind++];
 	if (!filename)
-		usage("missing filename");
+		usage("Missing filename");
 
 	argv += optind;
 	argc -= optind;
@@ -352,7 +358,7 @@ int main(int argc, char *argv[])
 
 	/* Check for node, property arguments */
 	if (args_per_step == 2 && (argc % 2))
-		usage("must have an even number of arguments");
+		usage("Must have an even number of arguments");
 
 	if (do_fdtget(&disp, filename, argv, argc, args_per_step))
 		return 1;
diff --git a/scripts/dtc/fdtput.c b/scripts/dtc/fdtput.c
index 2a8d674471..f2197f5193 100644
--- a/scripts/dtc/fdtput.c
+++ b/scripts/dtc/fdtput.c
@@ -96,7 +96,12 @@ static int encode_value(struct display_info *disp, char **arg, int arg_count,
 		/* enlarge our value buffer by a suitable margin if needed */
 		if (upto + len > value_size) {
 			value_size = (upto + len) + 500;
-			value = xrealloc(value, value_size);
+			value = realloc(value, value_size);
+			if (!value) {
+				fprintf(stderr, "Out of mmory: cannot alloc "
+					"%d bytes\n", value_size);
+				return -1;
+			}
 		}
 
 		ptr = value + upto;
@@ -126,59 +131,19 @@ static int encode_value(struct display_info *disp, char **arg, int arg_count,
 	return 0;
 }
 
-#define ALIGN(x)		(((x) + (FDT_TAGSIZE) - 1) & ~((FDT_TAGSIZE) - 1))
-
-static char *_realloc_fdt(char *fdt, int delta)
-{
-	int new_sz = fdt_totalsize(fdt) + delta;
-	fdt = xrealloc(fdt, new_sz);
-	fdt_open_into(fdt, fdt, new_sz);
-	return fdt;
-}
-
-static char *realloc_node(char *fdt, const char *name)
-{
-	int delta;
-	/* FDT_BEGIN_NODE, node name in off_struct and FDT_END_NODE */
-	delta = sizeof(struct fdt_node_header) + ALIGN(strlen(name) + 1)
-			+ FDT_TAGSIZE;
-	return _realloc_fdt(fdt, delta);
-}
-
-static char *realloc_property(char *fdt, int nodeoffset,
-		const char *name, int newlen)
-{
-	int delta = 0;
-	int oldlen = 0;
-
-	if (!fdt_get_property(fdt, nodeoffset, name, &oldlen))
-		/* strings + property header */
-		delta = sizeof(struct fdt_property) + strlen(name) + 1;
-
-	if (newlen > oldlen)
-		/* actual value in off_struct */
-		delta += ALIGN(newlen) - ALIGN(oldlen);
-
-	return _realloc_fdt(fdt, delta);
-}
-
-static int store_key_value(char **blob, const char *node_name,
+static int store_key_value(void *blob, const char *node_name,
 		const char *property, const char *buf, int len)
 {
 	int node;
 	int err;
 
-	node = fdt_path_offset(*blob, node_name);
+	node = fdt_path_offset(blob, node_name);
 	if (node < 0) {
 		report_error(node_name, -1, node);
 		return -1;
 	}
 
-	err = fdt_setprop(*blob, node, property, buf, len);
-	if (err == -FDT_ERR_NOSPACE) {
-		*blob = realloc_property(*blob, node, property, len);
-		err = fdt_setprop(*blob, node, property, buf, len);
-	}
+	err = fdt_setprop(blob, node, property, buf, len);
 	if (err) {
 		report_error(property, -1, err);
 		return -1;
@@ -196,7 +161,7 @@ static int store_key_value(char **blob, const char *node_name,
  * @param in_path	Path to process
  * @return 0 if ok, -1 on error
  */
-static int create_paths(char **blob, const char *in_path)
+static int create_paths(void *blob, const char *in_path)
 {
 	const char *path = in_path;
 	const char *sep;
@@ -212,11 +177,10 @@ static int create_paths(char **blob, const char *in_path)
 		if (!sep)
 			sep = path + strlen(path);
 
-		node = fdt_subnode_offset_namelen(*blob, offset, path,
+		node = fdt_subnode_offset_namelen(blob, offset, path,
 				sep - path);
 		if (node == -FDT_ERR_NOTFOUND) {
-			*blob = realloc_node(*blob, path);
-			node = fdt_add_subnode_namelen(*blob, offset, path,
+			node = fdt_add_subnode_namelen(blob, offset, path,
 						       sep - path);
 		}
 		if (node < 0) {
@@ -239,7 +203,7 @@ static int create_paths(char **blob, const char *in_path)
  * @param node_name	Name of node to create
  * @return new node offset if found, or -1 on failure
  */
-static int create_node(char **blob, const char *node_name)
+static int create_node(void *blob, const char *node_name)
 {
 	int node = 0;
 	char *p;
@@ -251,17 +215,15 @@ static int create_node(char **blob, const char *node_name)
 	}
 	*p = '\0';
 
-	*blob = realloc_node(*blob, p + 1);
-
 	if (p > node_name) {
-		node = fdt_path_offset(*blob, node_name);
+		node = fdt_path_offset(blob, node_name);
 		if (node < 0) {
 			report_error(node_name, -1, node);
 			return -1;
 		}
 	}
 
-	node = fdt_add_subnode(*blob, node, p + 1);
+	node = fdt_add_subnode(blob, node, p + 1);
 	if (node < 0) {
 		report_error(p + 1, -1, node);
 		return -1;
@@ -288,64 +250,66 @@ static int do_fdtput(struct display_info *disp, const char *filename,
 		 * store them into the property.
 		 */
 		assert(arg_count >= 2);
-		if (disp->auto_path && create_paths(&blob, *arg))
+		if (disp->auto_path && create_paths(blob, *arg))
 			return -1;
 		if (encode_value(disp, arg + 2, arg_count - 2, &value, &len) ||
-			store_key_value(&blob, *arg, arg[1], value, len))
+			store_key_value(blob, *arg, arg[1], value, len))
 			ret = -1;
 		break;
 	case OPER_CREATE_NODE:
 		for (; ret >= 0 && arg_count--; arg++) {
 			if (disp->auto_path)
-				ret = create_paths(&blob, *arg);
+				ret = create_paths(blob, *arg);
 			else
-				ret = create_node(&blob, *arg);
+				ret = create_node(blob, *arg);
 		}
 		break;
 	}
-	if (ret >= 0) {
-		fdt_pack(blob);
+	if (ret >= 0)
 		ret = utilfdt_write(filename, blob);
-	}
 
 	free(blob);
 	return ret;
 }
 
-/* Usage related data. */
-static const char usage_synopsis[] =
-	"write a property value to a device tree\n"
-	"	fdtput <options> <dt file> <node> <property> [<value>...]\n"
-	"	fdtput -c <options> <dt file> [<node>...]\n"
+static const char *usage_msg =
+	"fdtput - write a property value to a device tree\n"
 	"\n"
 	"The command line arguments are joined together into a single value.\n"
+	"\n"
+	"Usage:\n"
+	"	fdtput <options> <dt file> <node> <property> [<value>...]\n"
+	"	fdtput -c <options> <dt file> [<node>...]\n"
+	"Options:\n"
+	"\t-c\t\tCreate nodes if they don't already exist\n"
+	"\t-p\t\tAutomatically create nodes as needed for the node path\n"
+	"\t-t <type>\tType of data\n"
+	"\t-v\t\tVerbose: display each value decoded from command line\n"
+	"\t-h\t\tPrint this help\n\n"
 	USAGE_TYPE_MSG;
-static const char usage_short_opts[] = "cpt:v" USAGE_COMMON_SHORT_OPTS;
-static struct option const usage_long_opts[] = {
-	{"create",           no_argument, NULL, 'c'},
-	{"auto-path",        no_argument, NULL, 'p'},
-	{"type",              a_argument, NULL, 't'},
-	{"verbose",          no_argument, NULL, 'v'},
-	USAGE_COMMON_LONG_OPTS,
-};
-static const char * const usage_opts_help[] = {
-	"Create nodes if they don't already exist",
-	"Automatically create nodes as needed for the node path",
-	"Type of data",
-	"Display each value decoded from command line",
-	USAGE_COMMON_OPTS_HELP
-};
+
+static void usage(const char *msg)
+{
+	if (msg)
+		fprintf(stderr, "Error: %s\n\n", msg);
+
+	fprintf(stderr, "%s", usage_msg);
+	exit(2);
+}
 
 int main(int argc, char *argv[])
 {
-	int opt;
 	struct display_info disp;
 	char *filename = NULL;
 
 	memset(&disp, '\0', sizeof(disp));
 	disp.size = -1;
 	disp.oper = OPER_WRITE_PROP;
-	while ((opt = util_getopt_long()) != EOF) {
+	for (;;) {
+		int c = getopt(argc, argv, "chpt:v");
+		if (c == -1)
+			break;
+
 		/*
 		 * TODO: add options to:
 		 * - delete property
@@ -353,13 +317,15 @@ int main(int argc, char *argv[])
 		 * - rename node
 		 * - pack fdt before writing
 		 * - set amount of free space when writing
+		 * - expand fdt if value doesn't fit
 		 */
-		switch (opt) {
-		case_USAGE_COMMON_FLAGS
-
+		switch (c) {
 		case 'c':
 			disp.oper = OPER_CREATE_NODE;
 			break;
+		case 'h':
+		case '?':
+			usage(NULL);
 		case 'p':
 			disp.auto_path = 1;
 			break;
@@ -378,16 +344,16 @@ int main(int argc, char *argv[])
 	if (optind < argc)
 		filename = argv[optind++];
 	if (!filename)
-		usage("missing filename");
+		usage("Missing filename");
 
 	argv += optind;
 	argc -= optind;
 
 	if (disp.oper == OPER_WRITE_PROP) {
 		if (argc < 1)
-			usage("missing node");
+			usage("Missing node");
 		if (argc < 2)
-			usage("missing property");
+			usage("Missing property");
 	}
 
 	if (do_fdtput(&disp, filename, argv, argc))
diff --git a/scripts/dtc/flattree.c b/scripts/dtc/flattree.c
index bd99fa2d33..8d268fb785 100644
--- a/scripts/dtc/flattree.c
+++ b/scripts/dtc/flattree.c
@@ -49,7 +49,7 @@ static struct version_info {
 
 struct emitter {
 	void (*cell)(void *, cell_t);
-	void (*string)(void *, char *, int);
+	void (*string)(void *, const char *, int);
 	void (*align)(void *, int);
 	void (*data)(void *, struct data);
 	void (*beginnode)(void *, struct label *labels);
@@ -64,7 +64,7 @@ static void bin_emit_cell(void *e, cell_t val)
 	*dtbuf = data_append_cell(*dtbuf, val);
 }
 
-static void bin_emit_string(void *e, char *str, int len)
+static void bin_emit_string(void *e, const char *str, int len)
 {
 	struct data *dtbuf = e;
 
@@ -144,22 +144,14 @@ static void asm_emit_cell(void *e, cell_t val)
 		(val >> 8) & 0xff, val & 0xff);
 }
 
-static void asm_emit_string(void *e, char *str, int len)
+static void asm_emit_string(void *e, const char *str, int len)
 {
 	FILE *f = e;
-	char c = 0;
 
-	if (len != 0) {
-		/* XXX: ewww */
-		c = str[len];
-		str[len] = '\0';
-	}
-
-	fprintf(f, "\t.string\t\"%s\"\n", str);
-
-	if (len != 0) {
-		str[len] = c;
-	}
+	if (len != 0)
+		fprintf(f, "\t.string\t\"%.*s\"\n", len, str);
+	else
+		fprintf(f, "\t.string\t\"%s\"\n", str);
 }
 
 static void asm_emit_align(void *e, int a)
@@ -179,7 +171,7 @@ static void asm_emit_data(void *e, struct data d)
 		emit_offset_label(f, m->ref, m->offset);
 
 	while ((d.len - off) >= sizeof(uint32_t)) {
-		asm_emit_cell(e, fdt32_to_cpu(*((uint32_t *)(d.val+off))));
+		asm_emit_cell(e, fdt32_to_cpu(*((fdt32_t *)(d.val+off))));
 		off += sizeof(uint32_t);
 	}
 
@@ -318,17 +310,16 @@ static struct data flatten_reserve_list(struct reserve_info *reservelist,
 {
 	struct reserve_info *re;
 	struct data d = empty_data;
-	static struct fdt_reserve_entry null_re = {0,0};
 	int    j;
 
 	for (re = reservelist; re; re = re->next) {
-		d = data_append_re(d, &re->re);
+		d = data_append_re(d, re->address, re->size);
 	}
 	/*
 	 * Add additional reserved slots if the user asked for them.
 	 */
 	for (j = 0; j < reservenum; j++) {
-		d = data_append_re(d, &null_re);
+		d = data_append_re(d, 0, 0);
 	}
 
 	return d;
@@ -366,7 +357,7 @@ static void make_fdt_header(struct fdt_header *fdt,
 		fdt->size_dt_struct = cpu_to_fdt32(dtsize);
 }
 
-void dt_to_blob(FILE *f, struct boot_info *bi, int version)
+void dt_to_blob(FILE *f, struct dt_info *dti, int version)
 {
 	struct version_info *vi = NULL;
 	int i;
@@ -384,29 +375,36 @@ void dt_to_blob(FILE *f, struct boot_info *bi, int version)
 	if (!vi)
 		die("Unknown device tree blob version %d\n", version);
 
-	flatten_tree(bi->dt, &bin_emitter, &dtbuf, &strbuf, vi);
+	flatten_tree(dti->dt, &bin_emitter, &dtbuf, &strbuf, vi);
 	bin_emit_cell(&dtbuf, FDT_END);
 
-	reservebuf = flatten_reserve_list(bi->reservelist, vi);
+	reservebuf = flatten_reserve_list(dti->reservelist, vi);
 
 	/* Make header */
 	make_fdt_header(&fdt, vi, reservebuf.len, dtbuf.len, strbuf.len,
-			bi->boot_cpuid_phys);
+			dti->boot_cpuid_phys);
 
 	/*
 	 * If the user asked for more space than is used, adjust the totalsize.
 	 */
 	if (minsize > 0) {
 		padlen = minsize - fdt32_to_cpu(fdt.totalsize);
-		if ((padlen < 0) && (quiet < 1))
-			fprintf(stderr,
-				"Warning: blob size %d >= minimum size %d\n",
-				fdt32_to_cpu(fdt.totalsize), minsize);
+		if (padlen < 0) {
+			padlen = 0;
+			if (quiet < 1)
+				fprintf(stderr,
+					"Warning: blob size %d >= minimum size %d\n",
+					fdt32_to_cpu(fdt.totalsize), minsize);
+		}
 	}
 
 	if (padsize > 0)
 		padlen = padsize;
 
+	if (alignsize > 0)
+		padlen = ALIGN(fdt32_to_cpu(fdt.totalsize) + padlen, alignsize)
+			- fdt32_to_cpu(fdt.totalsize);
+
 	if (padlen > 0) {
 		int tsize = fdt32_to_cpu(fdt.totalsize);
 		tsize += padlen;
@@ -460,7 +458,7 @@ static void dump_stringtable_asm(FILE *f, struct data strbuf)
 	}
 }
 
-void dt_to_asm(FILE *f, struct boot_info *bi, int version)
+void dt_to_asm(FILE *f, struct dt_info *dti, int version)
 {
 	struct version_info *vi = NULL;
 	int i;
@@ -500,7 +498,7 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
 
 	if (vi->flags & FTF_BOOTCPUID) {
 		fprintf(f, "\t/* boot_cpuid_phys */\n");
-		asm_emit_cell(f, bi->boot_cpuid_phys);
+		asm_emit_cell(f, dti->boot_cpuid_phys);
 	}
 
 	if (vi->flags & FTF_STRTABSIZE) {
@@ -530,18 +528,18 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
 	 * Use .long on high and low halfs of u64s to avoid .quad
 	 * as it appears .quad isn't available in some assemblers.
 	 */
-	for (re = bi->reservelist; re; re = re->next) {
+	for (re = dti->reservelist; re; re = re->next) {
 		struct label *l;
 
 		for_each_label(re->labels, l) {
 			fprintf(f, "\t.globl\t%s\n", l->label);
 			fprintf(f, "%s:\n", l->label);
 		}
-		ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->re.address >> 32));
+		ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->address >> 32));
 		ASM_EMIT_BELONG(f, "0x%08x",
-				(unsigned int)(re->re.address & 0xffffffff));
-		ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->re.size >> 32));
-		ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->re.size & 0xffffffff));
+				(unsigned int)(re->address & 0xffffffff));
+		ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->size >> 32));
+		ASM_EMIT_BELONG(f, "0x%08x", (unsigned int)(re->size & 0xffffffff));
 	}
 	for (i = 0; i < reservenum; i++) {
 		fprintf(f, "\t.long\t0, 0\n\t.long\t0, 0\n");
@@ -550,7 +548,7 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
 	fprintf(f, "\t.long\t0, 0\n\t.long\t0, 0\n");
 
 	emit_label(f, symprefix, "struct_start");
-	flatten_tree(bi->dt, &asm_emitter, f, &strbuf, vi);
+	flatten_tree(dti->dt, &asm_emitter, f, &strbuf, vi);
 
 	fprintf(f, "\t/* FDT_END */\n");
 	asm_emit_cell(f, FDT_END);
@@ -572,6 +570,8 @@ void dt_to_asm(FILE *f, struct boot_info *bi, int version)
 	if (padsize > 0) {
 		fprintf(f, "\t.space\t%d, 0\n", padsize);
 	}
+	if (alignsize > 0)
+		asm_emit_align(f, alignsize);
 	emit_label(f, symprefix, "blob_abs_end");
 
 	data_free(strbuf);
@@ -600,7 +600,7 @@ static void flat_read_chunk(struct inbuf *inb, void *p, int len)
 
 static uint32_t flat_read_word(struct inbuf *inb)
 {
-	uint32_t val;
+	fdt32_t val;
 
 	assert(((inb->ptr - inb->base) % sizeof(val)) == 0);
 
@@ -709,13 +709,15 @@ static struct reserve_info *flat_read_mem_reserve(struct inbuf *inb)
 	 * First pass, count entries.
 	 */
 	while (1) {
+		uint64_t address, size;
+
 		flat_read_chunk(inb, &re, sizeof(re));
-		re.address  = fdt64_to_cpu(re.address);
-		re.size = fdt64_to_cpu(re.size);
-		if (re.size == 0)
+		address  = fdt64_to_cpu(re.address);
+		size = fdt64_to_cpu(re.size);
+		if (size == 0)
 			break;
 
-		new = build_reserve_entry(re.address, re.size);
+		new = build_reserve_entry(address, size);
 		reservelist = add_reserve_entry(reservelist, new);
 	}
 
@@ -729,7 +731,7 @@ static char *nodename_from_path(const char *ppath, const char *cpath)
 
 	plen = strlen(ppath);
 
-	if (!strneq(ppath, cpath, plen))
+	if (!strstarts(cpath, ppath))
 		die("Path \"%s\" is not valid as a child of \"%s\"\n",
 		    cpath, ppath);
 
@@ -797,13 +799,18 @@ static struct node *unflatten_tree(struct inbuf *dtbuf,
 		}
 	} while (val != FDT_END_NODE);
 
+	if (node->name != flatname) {
+		free(flatname);
+	}
+
 	return node;
 }
 
 
-struct boot_info *dt_from_blob(const char *fname)
+struct dt_info *dt_from_blob(const char *fname)
 {
 	FILE *f;
+	fdt32_t magic_buf, totalsize_buf;
 	uint32_t magic, totalsize, version, size_dt, boot_cpuid_phys;
 	uint32_t off_dt, off_str, off_mem_rsvmap;
 	int rc;
@@ -820,7 +827,7 @@ struct boot_info *dt_from_blob(const char *fname)
 
 	f = srcfile_relative_open(fname, NULL);
 
-	rc = fread(&magic, sizeof(magic), 1, f);
+	rc = fread(&magic_buf, sizeof(magic_buf), 1, f);
 	if (ferror(f))
 		die("Error reading DT blob magic number: %s\n",
 		    strerror(errno));
@@ -831,11 +838,11 @@ struct boot_info *dt_from_blob(const char *fname)
 			die("Mysterious short read reading magic number\n");
 	}
 
-	magic = fdt32_to_cpu(magic);
+	magic = fdt32_to_cpu(magic_buf);
 	if (magic != FDT_MAGIC)
 		die("Blob has incorrect magic number\n");
 
-	rc = fread(&totalsize, sizeof(totalsize), 1, f);
+	rc = fread(&totalsize_buf, sizeof(totalsize_buf), 1, f);
 	if (ferror(f))
 		die("Error reading DT blob size: %s\n", strerror(errno));
 	if (rc < 1) {
@@ -845,7 +852,7 @@ struct boot_info *dt_from_blob(const char *fname)
 			die("Mysterious short read reading blob size\n");
 	}
 
-	totalsize = fdt32_to_cpu(totalsize);
+	totalsize = fdt32_to_cpu(totalsize_buf);
 	if (totalsize < FDT_V1_SIZE)
 		die("DT blob size (%d) is too small\n", totalsize);
 
@@ -889,7 +896,7 @@ struct boot_info *dt_from_blob(const char *fname)
 
 	if (version >= 3) {
 		uint32_t size_str = fdt32_to_cpu(fdt->size_dt_strings);
-		if (off_str+size_str > totalsize)
+		if ((off_str+size_str < off_str) || (off_str+size_str > totalsize))
 			die("String table extends past total size\n");
 		inbuf_init(&strbuf, blob + off_str, blob + off_str + size_str);
 	} else {
@@ -898,7 +905,7 @@ struct boot_info *dt_from_blob(const char *fname)
 
 	if (version >= 17) {
 		size_dt = fdt32_to_cpu(fdt->size_dt_struct);
-		if (off_dt+size_dt > totalsize)
+		if ((off_dt+size_dt < off_dt) || (off_dt+size_dt > totalsize))
 			die("Structure block extends past total size\n");
 	}
 
@@ -929,5 +936,5 @@ struct boot_info *dt_from_blob(const char *fname)
 
 	fclose(f);
 
-	return build_boot_info(reservelist, tree, boot_cpuid_phys);
+	return build_dt_info(DTSF_V1, reservelist, tree, boot_cpuid_phys);
 }
diff --git a/scripts/dtc/fstree.c b/scripts/dtc/fstree.c
index 6d1beec958..ae7d06c3c4 100644
--- a/scripts/dtc/fstree.c
+++ b/scripts/dtc/fstree.c
@@ -79,13 +79,12 @@ static struct node *read_fstree(const char *dirname)
 	return tree;
 }
 
-struct boot_info *dt_from_fs(const char *dirname)
+struct dt_info *dt_from_fs(const char *dirname)
 {
 	struct node *tree;
 
 	tree = read_fstree(dirname);
 	tree = name_node(tree, "");
 
-	return build_boot_info(NULL, tree, guess_boot_cpuid(tree));
+	return build_dt_info(DTSF_V1, NULL, tree, guess_boot_cpuid(tree));
 }
-
diff --git a/scripts/dtc/libfdt.h b/scripts/dtc/libfdt.h
index 32d52276d6..1e27780e11 100644
--- a/scripts/dtc/libfdt.h
+++ b/scripts/dtc/libfdt.h
@@ -1,5 +1,5 @@
-#ifndef _LIBFDT_H
-#define _LIBFDT_H
+#ifndef LIBFDT_H
+#define LIBFDT_H
 /*
  * libfdt - Flat Device Tree manipulation
  * Copyright (C) 2006 David Gibson, IBM Corporation.
@@ -51,17 +51,17 @@
  *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <libfdt_env.h>
-#include <fdt.h>
+#include "libfdt_env.h"
+#include "fdt.h"
 
-#define FDT_FIRST_SUPPORTED_VERSION	0x10
+#define FDT_FIRST_SUPPORTED_VERSION	0x02
 #define FDT_LAST_SUPPORTED_VERSION	0x11
 
 /* Error codes: informative error codes */
 #define FDT_ERR_NOTFOUND	1
 	/* FDT_ERR_NOTFOUND: The requested node or property does not exist */
 #define FDT_ERR_EXISTS		2
-	/* FDT_ERR_EXISTS: Attemped to create a node or property which
+	/* FDT_ERR_EXISTS: Attempted to create a node or property which
 	 * already exists */
 #define FDT_ERR_NOSPACE		3
 	/* FDT_ERR_NOSPACE: Operation needed to expand the device
@@ -79,8 +79,10 @@
 	 * (e.g. missing a leading / for a function which requires an
 	 * absolute path) */
 #define FDT_ERR_BADPHANDLE	6
-	/* FDT_ERR_BADPHANDLE: Function was passed an invalid phandle
-	 * value.  phandle values of 0 and -1 are not permitted. */
+	/* FDT_ERR_BADPHANDLE: Function was passed an invalid phandle.
+	 * This can be caused either by an invalid phandle property
+	 * length, or the phandle value was either 0 or -1, which are
+	 * not permitted. */
 #define FDT_ERR_BADSTATE	7
 	/* FDT_ERR_BADSTATE: Function was passed an incomplete device
 	 * tree created by the sequential-write functions, which is
@@ -121,13 +123,29 @@
 	/* FDT_ERR_BADNCELLS: Device tree has a #address-cells, #size-cells
 	 * or similar property with a bad format or value */
 
-#define FDT_ERR_MAX		14
+#define FDT_ERR_BADVALUE	15
+	/* FDT_ERR_BADVALUE: Device tree has a property with an unexpected
+	 * value. For example: a property expected to contain a string list
+	 * is not NUL-terminated within the length of its value. */
+
+#define FDT_ERR_BADOVERLAY	16
+	/* FDT_ERR_BADOVERLAY: The device tree overlay, while
+	 * correctly structured, cannot be applied due to some
+	 * unexpected or missing value, property or node. */
+
+#define FDT_ERR_NOPHANDLES	17
+	/* FDT_ERR_NOPHANDLES: The device tree doesn't have any
+	 * phandle available anymore without causing an overflow */
+
+#define FDT_ERR_MAX		17
 
 /**********************************************************************/
 /* Low-level functions (you probably don't need these)                */
 /**********************************************************************/
 
+#ifndef SWIG /* This function is not useful in Python */
 const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int checklen);
+#endif
 static inline void *fdt_offset_ptr_w(void *fdt, int offset, int checklen)
 {
 	return (void *)(uintptr_t)fdt_offset_ptr(fdt, offset, checklen);
@@ -163,40 +181,67 @@ int fdt_first_subnode(const void *fdt, int offset);
  */
 int fdt_next_subnode(const void *fdt, int offset);
 
+/**
+ * fdt_for_each_subnode - iterate over all subnodes of a parent
+ *
+ * @node:	child node (int, lvalue)
+ * @fdt:	FDT blob (const void *)
+ * @parent:	parent node (int)
+ *
+ * This is actually a wrapper around a for loop and would be used like so:
+ *
+ *	fdt_for_each_subnode(node, fdt, parent) {
+ *		Use node
+ *		...
+ *	}
+ *
+ *	if ((node < 0) && (node != -FDT_ERR_NOT_FOUND)) {
+ *		Error handling
+ *	}
+ *
+ * Note that this is implemented as a macro and @node is used as
+ * iterator in the loop. The parent variable be constant or even a
+ * literal.
+ *
+ */
+#define fdt_for_each_subnode(node, fdt, parent)		\
+	for (node = fdt_first_subnode(fdt, parent);	\
+	     node >= 0;					\
+	     node = fdt_next_subnode(fdt, node))
+
 /**********************************************************************/
 /* General functions                                                  */
 /**********************************************************************/
-
 #define fdt_get_header(fdt, field) \
 	(fdt32_to_cpu(((const struct fdt_header *)(fdt))->field))
-#define fdt_magic(fdt) 			(fdt_get_header(fdt, magic))
+#define fdt_magic(fdt)			(fdt_get_header(fdt, magic))
 #define fdt_totalsize(fdt)		(fdt_get_header(fdt, totalsize))
 #define fdt_off_dt_struct(fdt)		(fdt_get_header(fdt, off_dt_struct))
 #define fdt_off_dt_strings(fdt)		(fdt_get_header(fdt, off_dt_strings))
 #define fdt_off_mem_rsvmap(fdt)		(fdt_get_header(fdt, off_mem_rsvmap))
 #define fdt_version(fdt)		(fdt_get_header(fdt, version))
-#define fdt_last_comp_version(fdt) 	(fdt_get_header(fdt, last_comp_version))
-#define fdt_boot_cpuid_phys(fdt) 	(fdt_get_header(fdt, boot_cpuid_phys))
-#define fdt_size_dt_strings(fdt) 	(fdt_get_header(fdt, size_dt_strings))
+#define fdt_last_comp_version(fdt)	(fdt_get_header(fdt, last_comp_version))
+#define fdt_boot_cpuid_phys(fdt)	(fdt_get_header(fdt, boot_cpuid_phys))
+#define fdt_size_dt_strings(fdt)	(fdt_get_header(fdt, size_dt_strings))
 #define fdt_size_dt_struct(fdt)		(fdt_get_header(fdt, size_dt_struct))
 
-#define __fdt_set_hdr(name) \
+#define fdt_set_hdr_(name) \
 	static inline void fdt_set_##name(void *fdt, uint32_t val) \
 	{ \
-		struct fdt_header *fdth = (struct fdt_header*)fdt; \
+		struct fdt_header *fdth = (struct fdt_header *)fdt; \
 		fdth->name = cpu_to_fdt32(val); \
 	}
-__fdt_set_hdr(magic);
-__fdt_set_hdr(totalsize);
-__fdt_set_hdr(off_dt_struct);
-__fdt_set_hdr(off_dt_strings);
-__fdt_set_hdr(off_mem_rsvmap);
-__fdt_set_hdr(version);
-__fdt_set_hdr(last_comp_version);
-__fdt_set_hdr(boot_cpuid_phys);
-__fdt_set_hdr(size_dt_strings);
-__fdt_set_hdr(size_dt_struct);
-#undef __fdt_set_hdr
+fdt_set_hdr_(magic);
+fdt_set_hdr_(totalsize);
+fdt_set_hdr_(off_dt_struct);
+fdt_set_hdr_(off_dt_strings);
+fdt_set_hdr_(off_mem_rsvmap);
+fdt_set_hdr_(version);
+fdt_set_hdr_(last_comp_version);
+fdt_set_hdr_(boot_cpuid_phys);
+fdt_set_hdr_(size_dt_strings);
+fdt_set_hdr_(size_dt_struct);
+#undef fdt_set_hdr_
 
 /**
  * fdt_check_header - sanity check a device tree or possible device tree
@@ -254,6 +299,21 @@ int fdt_move(const void *fdt, void *buf, int bufsize);
 const char *fdt_string(const void *fdt, int stroffset);
 
 /**
+ * fdt_get_max_phandle - retrieves the highest phandle in a tree
+ * @fdt: pointer to the device tree blob
+ *
+ * fdt_get_max_phandle retrieves the highest phandle in the given
+ * device tree. This will ignore badly formatted phandles, or phandles
+ * with a value of 0 or -1.
+ *
+ * returns:
+ *      the highest phandle on success
+ *      0, if no phandle was found in the device tree
+ *      -1, if an error occurred
+ */
+uint32_t fdt_get_max_phandle(const void *fdt);
+
+/**
  * fdt_num_mem_rsv - retrieve the number of memory reserve map entries
  * @fdt: pointer to the device tree blob
  *
@@ -295,8 +355,10 @@ int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size);
  * useful for finding subnodes based on a portion of a larger string,
  * such as a full path.
  */
+#ifndef SWIG /* Not available in Python */
 int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
 			       const char *name, int namelen);
+#endif
 /**
  * fdt_subnode_offset - find a subnode of a given node
  * @fdt: pointer to the device tree blob
@@ -313,8 +375,9 @@ int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
  * returns:
  *	structure block offset of the requested subnode (>=0), on success
  *	-FDT_ERR_NOTFOUND, if the requested subnode does not exist
- *	-FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE tag
- *      -FDT_ERR_BADMAGIC,
+ *	-FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE
+ *		tag
+ *	-FDT_ERR_BADMAGIC,
  *	-FDT_ERR_BADVERSION,
  *	-FDT_ERR_BADSTATE,
  *	-FDT_ERR_BADSTRUCTURE,
@@ -323,6 +386,19 @@ int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
 int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name);
 
 /**
+ * fdt_path_offset_namelen - find a tree node by its full path
+ * @fdt: pointer to the device tree blob
+ * @path: full path of the node to locate
+ * @namelen: number of characters of path to consider
+ *
+ * Identical to fdt_path_offset(), but only consider the first namelen
+ * characters of path as the path name.
+ */
+#ifndef SWIG /* Not available in Python */
+int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen);
+#endif
+
+/**
  * fdt_path_offset - find a tree node by its full path
  * @fdt: pointer to the device tree blob
  * @path: full path of the node to locate
@@ -335,7 +411,8 @@ int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name);
  * address).
  *
  * returns:
- *	structure block offset of the node with the requested path (>=0), on success
+ *	structure block offset of the node with the requested path (>=0), on
+ *		success
  *	-FDT_ERR_BADPATH, given path does not begin with '/' or is invalid
  *	-FDT_ERR_NOTFOUND, if the requested node does not exist
  *      -FDT_ERR_BADMAGIC,
@@ -359,10 +436,12 @@ int fdt_path_offset(const void *fdt, const char *path);
  *
  * returns:
  *	pointer to the node's name, on success
- *		If lenp is non-NULL, *lenp contains the length of that name (>=0)
+ *		If lenp is non-NULL, *lenp contains the length of that name
+ *			(>=0)
  *	NULL, on error
  *		if lenp is non-NULL *lenp contains an error code (<0):
- *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
+ *			tag
  *		-FDT_ERR_BADMAGIC,
  *		-FDT_ERR_BADVERSION,
  *		-FDT_ERR_BADSTATE, standard meanings
@@ -411,6 +490,33 @@ int fdt_first_property_offset(const void *fdt, int nodeoffset);
 int fdt_next_property_offset(const void *fdt, int offset);
 
 /**
+ * fdt_for_each_property_offset - iterate over all properties of a node
+ *
+ * @property_offset:	property offset (int, lvalue)
+ * @fdt:		FDT blob (const void *)
+ * @node:		node offset (int)
+ *
+ * This is actually a wrapper around a for loop and would be used like so:
+ *
+ *	fdt_for_each_property_offset(property, fdt, node) {
+ *		Use property
+ *		...
+ *	}
+ *
+ *	if ((property < 0) && (property != -FDT_ERR_NOT_FOUND)) {
+ *		Error handling
+ *	}
+ *
+ * Note that this is implemented as a macro and property is used as
+ * iterator in the loop. The node variable can be constant or even a
+ * literal.
+ */
+#define fdt_for_each_property_offset(property, fdt, node)	\
+	for (property = fdt_first_property_offset(fdt, node);	\
+	     property >= 0;					\
+	     property = fdt_next_property_offset(fdt, property))
+
+/**
  * fdt_get_property_by_offset - retrieve the property at a given offset
  * @fdt: pointer to the device tree blob
  * @offset: offset of the property to retrieve
@@ -421,6 +527,9 @@ int fdt_next_property_offset(const void *fdt, int offset);
  * offset.  If lenp is non-NULL, the length of the property value is
  * also returned, in the integer pointed to by lenp.
  *
+ * Note that this code only works on device tree versions >= 16. fdt_getprop()
+ * works on all versions.
+ *
  * returns:
  *	pointer to the structure representing the property
  *		if lenp is non-NULL, *lenp contains the length of the property
@@ -446,13 +555,15 @@ const struct fdt_property *fdt_get_property_by_offset(const void *fdt,
  * @namelen: number of characters of name to consider
  * @lenp: pointer to an integer variable (will be overwritten) or NULL
  *
- * Identical to fdt_get_property_namelen(), but only examine the first
- * namelen characters of name for matching the property name.
+ * Identical to fdt_get_property(), but only examine the first namelen
+ * characters of name for matching the property name.
  */
+#ifndef SWIG /* Not available in Python */
 const struct fdt_property *fdt_get_property_namelen(const void *fdt,
 						    int nodeoffset,
 						    const char *name,
 						    int namelen, int *lenp);
+#endif
 
 /**
  * fdt_get_property - find a given property in a given node
@@ -474,7 +585,8 @@ const struct fdt_property *fdt_get_property_namelen(const void *fdt,
  *	NULL, on error
  *		if lenp is non-NULL, *lenp contains an error code (<0):
  *		-FDT_ERR_NOTFOUND, node does not have named property
- *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
+ *			tag
  *		-FDT_ERR_BADMAGIC,
  *		-FDT_ERR_BADVERSION,
  *		-FDT_ERR_BADSTATE,
@@ -522,8 +634,10 @@ static inline struct fdt_property *fdt_get_property_w(void *fdt, int nodeoffset,
  *		-FDT_ERR_BADSTRUCTURE,
  *		-FDT_ERR_TRUNCATED, standard meanings
  */
+#ifndef SWIG /* This function is not useful in Python */
 const void *fdt_getprop_by_offset(const void *fdt, int offset,
 				  const char **namep, int *lenp);
+#endif
 
 /**
  * fdt_getprop_namelen - get property value based on substring
@@ -536,8 +650,17 @@ const void *fdt_getprop_by_offset(const void *fdt, int offset,
  * Identical to fdt_getprop(), but only examine the first namelen
  * characters of name for matching the property name.
  */
+#ifndef SWIG /* Not available in Python */
 const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
 				const char *name, int namelen, int *lenp);
+static inline void *fdt_getprop_namelen_w(void *fdt, int nodeoffset,
+					  const char *name, int namelen,
+					  int *lenp)
+{
+	return (void *)(uintptr_t)fdt_getprop_namelen(fdt, nodeoffset, name,
+						      namelen, lenp);
+}
+#endif
 
 /**
  * fdt_getprop - retrieve the value of a given property
@@ -559,7 +682,8 @@ const void *fdt_getprop_namelen(const void *fdt, int nodeoffset,
  *	NULL, on error
  *		if lenp is non-NULL, *lenp contains an error code (<0):
  *		-FDT_ERR_NOTFOUND, node does not have named property
- *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ *		-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE
+ *			tag
  *		-FDT_ERR_BADMAGIC,
  *		-FDT_ERR_BADVERSION,
  *		-FDT_ERR_BADSTATE,
@@ -597,11 +721,13 @@ uint32_t fdt_get_phandle(const void *fdt, int nodeoffset);
  * Identical to fdt_get_alias(), but only examine the first namelen
  * characters of name for matching the alias name.
  */
+#ifndef SWIG /* Not available in Python */
 const char *fdt_get_alias_namelen(const void *fdt,
 				  const char *name, int namelen);
+#endif
 
 /**
- * fdt_get_alias - retreive the path referenced by a given alias
+ * fdt_get_alias - retrieve the path referenced by a given alias
  * @fdt: pointer to the device tree blob
  * @name: name of the alias th look up
  *
@@ -631,7 +757,7 @@ const char *fdt_get_alias(const void *fdt, const char *name);
  *	0, on success
  *		buf contains the absolute path of the node at
  *		nodeoffset, as a NUL-terminated string.
- * 	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ *	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
  *	-FDT_ERR_NOSPACE, the path of the given node is longer than (bufsize-1)
  *		characters and will not fit in the given buffer.
  *	-FDT_ERR_BADMAGIC,
@@ -661,11 +787,11 @@ int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen);
  * structure from the start to nodeoffset.
  *
  * returns:
-
  *	structure block offset of the node at node offset's ancestor
  *		of depth supernodedepth (>=0), on success
- * 	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
-*	-FDT_ERR_NOTFOUND, supernodedepth was greater than the depth of nodeoffset
+ *	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ *	-FDT_ERR_NOTFOUND, supernodedepth was greater than the depth of
+ *		nodeoffset
  *	-FDT_ERR_BADMAGIC,
  *	-FDT_ERR_BADVERSION,
  *	-FDT_ERR_BADSTATE,
@@ -687,7 +813,7 @@ int fdt_supernode_atdepth_offset(const void *fdt, int nodeoffset,
  *
  * returns:
  *	depth of the node at nodeoffset (>=0), on success
- * 	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ *	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
  *	-FDT_ERR_BADMAGIC,
  *	-FDT_ERR_BADVERSION,
  *	-FDT_ERR_BADSTATE,
@@ -710,7 +836,7 @@ int fdt_node_depth(const void *fdt, int nodeoffset);
  * returns:
  *	structure block offset of the parent of the node at nodeoffset
  *		(>=0), on success
- * 	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ *	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
  *	-FDT_ERR_BADMAGIC,
  *	-FDT_ERR_BADVERSION,
  *	-FDT_ERR_BADSTATE,
@@ -750,7 +876,7 @@ int fdt_parent_offset(const void *fdt, int nodeoffset);
  *		 on success
  *	-FDT_ERR_NOTFOUND, no node matching the criterion exists in the
  *		tree after startoffset
- * 	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ *	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
  *	-FDT_ERR_BADMAGIC,
  *	-FDT_ERR_BADVERSION,
  *	-FDT_ERR_BADSTATE,
@@ -797,7 +923,7 @@ int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle);
  *	1, if the node has a 'compatible' property, but it does not list
  *		the given string
  *	-FDT_ERR_NOTFOUND, if the given node has no 'compatible' property
- * 	-FDT_ERR_BADOFFSET, if nodeoffset does not refer to a BEGIN_NODE tag
+ *	-FDT_ERR_BADOFFSET, if nodeoffset does not refer to a BEGIN_NODE tag
  *	-FDT_ERR_BADMAGIC,
  *	-FDT_ERR_BADVERSION,
  *	-FDT_ERR_BADSTATE,
@@ -834,7 +960,7 @@ int fdt_node_check_compatible(const void *fdt, int nodeoffset,
  *		 on success
  *	-FDT_ERR_NOTFOUND, no node matching the criterion exists in the
  *		tree after startoffset
- * 	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
+ *	-FDT_ERR_BADOFFSET, nodeoffset does not refer to a BEGIN_NODE tag
  *	-FDT_ERR_BADMAGIC,
  *	-FDT_ERR_BADVERSION,
  *	-FDT_ERR_BADSTATE,
@@ -857,6 +983,68 @@ int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
  */
 int fdt_stringlist_contains(const char *strlist, int listlen, const char *str);
 
+/**
+ * fdt_stringlist_count - count the number of strings in a string list
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of a tree node
+ * @property: name of the property containing the string list
+ * @return:
+ *   the number of strings in the given property
+ *   -FDT_ERR_BADVALUE if the property value is not NUL-terminated
+ *   -FDT_ERR_NOTFOUND if the property does not exist
+ */
+int fdt_stringlist_count(const void *fdt, int nodeoffset, const char *property);
+
+/**
+ * fdt_stringlist_search - find a string in a string list and return its index
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of a tree node
+ * @property: name of the property containing the string list
+ * @string: string to look up in the string list
+ *
+ * Note that it is possible for this function to succeed on property values
+ * that are not NUL-terminated. That's because the function will stop after
+ * finding the first occurrence of @string. This can for example happen with
+ * small-valued cell properties, such as #address-cells, when searching for
+ * the empty string.
+ *
+ * @return:
+ *   the index of the string in the list of strings
+ *   -FDT_ERR_BADVALUE if the property value is not NUL-terminated
+ *   -FDT_ERR_NOTFOUND if the property does not exist or does not contain
+ *                     the given string
+ */
+int fdt_stringlist_search(const void *fdt, int nodeoffset, const char *property,
+			  const char *string);
+
+/**
+ * fdt_stringlist_get() - obtain the string at a given index in a string list
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of a tree node
+ * @property: name of the property containing the string list
+ * @index: index of the string to return
+ * @lenp: return location for the string length or an error code on failure
+ *
+ * Note that this will successfully extract strings from properties with
+ * non-NUL-terminated values. For example on small-valued cell properties
+ * this function will return the empty string.
+ *
+ * If non-NULL, the length of the string (on success) or a negative error-code
+ * (on failure) will be stored in the integer pointer to by lenp.
+ *
+ * @return:
+ *   A pointer to the string at the given index in the string list or NULL on
+ *   failure. On success the length of the string will be stored in the memory
+ *   location pointed to by the lenp parameter, if non-NULL. On failure one of
+ *   the following negative error codes will be returned in the lenp parameter
+ *   (if non-NULL):
+ *     -FDT_ERR_BADVALUE if the property value is not NUL-terminated
+ *     -FDT_ERR_NOTFOUND if the property does not exist
+ */
+const char *fdt_stringlist_get(const void *fdt, int nodeoffset,
+			       const char *property, int index,
+			       int *lenp);
+
 /**********************************************************************/
 /* Read-only functions (addressing related)                           */
 /**********************************************************************/
@@ -882,7 +1070,8 @@ int fdt_stringlist_contains(const char *strlist, int listlen, const char *str);
  * returns:
  *	0 <= n < FDT_MAX_NCELLS, on success
  *      2, if the node has no #address-cells property
- *      -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid #address-cells property
+ *      -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid
+ *		#address-cells property
  *	-FDT_ERR_BADMAGIC,
  *	-FDT_ERR_BADVERSION,
  *	-FDT_ERR_BADSTATE,
@@ -902,7 +1091,8 @@ int fdt_address_cells(const void *fdt, int nodeoffset);
  * returns:
  *	0 <= n < FDT_MAX_NCELLS, on success
  *      2, if the node has no #address-cells property
- *      -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid #size-cells property
+ *      -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid
+ *		#size-cells property
  *	-FDT_ERR_BADMAGIC,
  *	-FDT_ERR_BADVERSION,
  *	-FDT_ERR_BADSTATE,
@@ -917,6 +1107,29 @@ int fdt_size_cells(const void *fdt, int nodeoffset);
 /**********************************************************************/
 
 /**
+ * fdt_setprop_inplace_namelen_partial - change a property's value,
+ *                                       but not its size
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @namelen: number of characters of name to consider
+ * @idx: index of the property to change in the array
+ * @val: pointer to data to replace the property value with
+ * @len: length of the property value
+ *
+ * Identical to fdt_setprop_inplace(), but modifies the given property
+ * starting from the given index, and using only the first characters
+ * of the name. It is useful when you want to manipulate only one value of
+ * an array and you have a string that doesn't end with \0.
+ */
+#ifndef SWIG /* Not available in Python */
+int fdt_setprop_inplace_namelen_partial(void *fdt, int nodeoffset,
+					const char *name, int namelen,
+					uint32_t idx, const void *val,
+					int len);
+#endif
+
+/**
  * fdt_setprop_inplace - change a property's value, but not its size
  * @fdt: pointer to the device tree blob
  * @nodeoffset: offset of the node whose property to change
@@ -944,8 +1157,10 @@ int fdt_size_cells(const void *fdt, int nodeoffset);
  *	-FDT_ERR_BADSTRUCTURE,
  *	-FDT_ERR_TRUNCATED, standard meanings
  */
+#ifndef SWIG /* Not available in Python */
 int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
 			const void *val, int len);
+#endif
 
 /**
  * fdt_setprop_inplace_u32 - change the value of a 32-bit integer property
@@ -1102,6 +1317,22 @@ static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val)
 {
 	return fdt_property_u32(fdt, name, val);
 }
+
+/**
+ * fdt_property_placeholder - add a new property and return a ptr to its value
+ *
+ * @fdt: pointer to the device tree blob
+ * @name: name of property to add
+ * @len: length of property value in bytes
+ * @valp: returns a pointer to where where the value should be placed
+ *
+ * returns:
+ *	0, on success
+ *	-FDT_ERR_BADMAGIC,
+ *	-FDT_ERR_NOSPACE, standard meanings
+ */
+int fdt_property_placeholder(void *fdt, const char *name, int len, void **valp);
+
 #define fdt_property_string(fdt, name, str) \
 	fdt_property(fdt, name, str, strlen(str)+1)
 int fdt_end_node(void *fdt);
@@ -1221,6 +1452,37 @@ int fdt_setprop(void *fdt, int nodeoffset, const char *name,
 		const void *val, int len);
 
 /**
+ * fdt_setprop_placeholder - allocate space for a property
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ * @len: length of the property value
+ * @prop_data: return pointer to property data
+ *
+ * fdt_setprop_placeholer() allocates the named property in the given node.
+ * If the property exists it is resized. In either case a pointer to the
+ * property data is returned.
+ *
+ * This function may insert or delete data from the blob, and will
+ * therefore change the offsets of some existing nodes.
+ *
+ * returns:
+ *	0, on success
+ *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ *		contain the new property value
+ *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ *	-FDT_ERR_BADLAYOUT,
+ *	-FDT_ERR_BADMAGIC,
+ *	-FDT_ERR_BADVERSION,
+ *	-FDT_ERR_BADSTATE,
+ *	-FDT_ERR_BADSTRUCTURE,
+ *	-FDT_ERR_BADLAYOUT,
+ *	-FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_setprop_placeholder(void *fdt, int nodeoffset, const char *name,
+			    int len, void **prop_data);
+
+/**
  * fdt_setprop_u32 - set a property to a 32-bit integer
  * @fdt: pointer to the device tree blob
  * @nodeoffset: offset of the node whose property to change
@@ -1332,6 +1594,36 @@ static inline int fdt_setprop_cell(void *fdt, int nodeoffset, const char *name,
 #define fdt_setprop_string(fdt, nodeoffset, name, str) \
 	fdt_setprop((fdt), (nodeoffset), (name), (str), strlen(str)+1)
 
+
+/**
+ * fdt_setprop_empty - set a property to an empty value
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node whose property to change
+ * @name: name of the property to change
+ *
+ * fdt_setprop_empty() sets the value of the named property in the
+ * given node to an empty (zero length) value, or creates a new empty
+ * property if it does not already exist.
+ *
+ * This function may insert or delete data from the blob, and will
+ * therefore change the offsets of some existing nodes.
+ *
+ * returns:
+ *	0, on success
+ *	-FDT_ERR_NOSPACE, there is insufficient free space in the blob to
+ *		contain the new property value
+ *	-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag
+ *	-FDT_ERR_BADLAYOUT,
+ *	-FDT_ERR_BADMAGIC,
+ *	-FDT_ERR_BADVERSION,
+ *	-FDT_ERR_BADSTATE,
+ *	-FDT_ERR_BADSTRUCTURE,
+ *	-FDT_ERR_BADLAYOUT,
+ *	-FDT_ERR_TRUNCATED, standard meanings
+ */
+#define fdt_setprop_empty(fdt, nodeoffset, name) \
+	fdt_setprop((fdt), (nodeoffset), (name), NULL, 0)
+
 /**
  * fdt_appendprop - append to or create a property
  * @fdt: pointer to the device tree blob
@@ -1509,8 +1801,10 @@ int fdt_delprop(void *fdt, int nodeoffset, const char *name);
  * creating subnodes based on a portion of a larger string, such as a
  * full path.
  */
+#ifndef SWIG /* Not available in Python */
 int fdt_add_subnode_namelen(void *fdt, int parentoffset,
 			    const char *name, int namelen);
+#endif
 
 /**
  * fdt_add_subnode - creates a new node
@@ -1526,9 +1820,11 @@ int fdt_add_subnode_namelen(void *fdt, int parentoffset,
  * change the offsets of some existing nodes.
 
  * returns:
- *	structure block offset of the created nodeequested subnode (>=0), on success
+ *	structure block offset of the created nodeequested subnode (>=0), on
+ *		success
  *	-FDT_ERR_NOTFOUND, if the requested subnode does not exist
- *	-FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE tag
+ *	-FDT_ERR_BADOFFSET, if parentoffset did not point to an FDT_BEGIN_NODE
+ *		tag
  *	-FDT_ERR_EXISTS, if the node at parentoffset already has a subnode of
  *		the given name
  *	-FDT_ERR_NOSPACE, if there is insufficient free space in the
@@ -1566,10 +1862,41 @@ int fdt_add_subnode(void *fdt, int parentoffset, const char *name);
  */
 int fdt_del_node(void *fdt, int nodeoffset);
 
+/**
+ * fdt_overlay_apply - Applies a DT overlay on a base DT
+ * @fdt: pointer to the base device tree blob
+ * @fdto: pointer to the device tree overlay blob
+ *
+ * fdt_overlay_apply() will apply the given device tree overlay on the
+ * given base device tree.
+ *
+ * Expect the base device tree to be modified, even if the function
+ * returns an error.
+ *
+ * returns:
+ *	0, on success
+ *	-FDT_ERR_NOSPACE, there's not enough space in the base device tree
+ *	-FDT_ERR_NOTFOUND, the overlay points to some inexistant nodes or
+ *		properties in the base DT
+ *	-FDT_ERR_BADPHANDLE,
+ *	-FDT_ERR_BADOVERLAY,
+ *	-FDT_ERR_NOPHANDLES,
+ *	-FDT_ERR_INTERNAL,
+ *	-FDT_ERR_BADLAYOUT,
+ *	-FDT_ERR_BADMAGIC,
+ *	-FDT_ERR_BADOFFSET,
+ *	-FDT_ERR_BADPATH,
+ *	-FDT_ERR_BADVERSION,
+ *	-FDT_ERR_BADSTRUCTURE,
+ *	-FDT_ERR_BADSTATE,
+ *	-FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_overlay_apply(void *fdt, void *fdto);
+
 /**********************************************************************/
 /* Debugging / informational functions                                */
 /**********************************************************************/
 
 const char *fdt_strerror(int errval);
 
-#endif /* _LIBFDT_H */
+#endif /* LIBFDT_H */
diff --git a/scripts/dtc/libfdt_env.h b/scripts/dtc/libfdt_env.h
index 9dea97dfff..bd24746287 100644
--- a/scripts/dtc/libfdt_env.h
+++ b/scripts/dtc/libfdt_env.h
@@ -1,5 +1,5 @@
-#ifndef _LIBFDT_ENV_H
-#define _LIBFDT_ENV_H
+#ifndef LIBFDT_ENV_H
+#define LIBFDT_ENV_H
 /*
  * libfdt - Flat Device Tree manipulation
  * Copyright (C) 2006 David Gibson, IBM Corporation.
@@ -54,19 +54,20 @@
 
 #include <stddef.h>
 #include <stdint.h>
+#include <stdlib.h>
 #include <string.h>
 
 #ifdef __CHECKER__
-#define __force __attribute__((force))
-#define __bitwise __attribute__((bitwise))
+#define FDT_FORCE __attribute__((force))
+#define FDT_BITWISE __attribute__((bitwise))
 #else
-#define __force
-#define __bitwise
+#define FDT_FORCE
+#define FDT_BITWISE
 #endif
 
-typedef uint16_t __bitwise fdt16_t;
-typedef uint32_t __bitwise fdt32_t;
-typedef uint64_t __bitwise fdt64_t;
+typedef uint16_t FDT_BITWISE fdt16_t;
+typedef uint32_t FDT_BITWISE fdt32_t;
+typedef uint64_t FDT_BITWISE fdt64_t;
 
 #define EXTRACT_BYTE(x, n)	((unsigned long long)((uint8_t *)&x)[n])
 #define CPU_TO_FDT16(x) ((EXTRACT_BYTE(x, 0) << 8) | EXTRACT_BYTE(x, 1))
@@ -79,33 +80,60 @@ typedef uint64_t __bitwise fdt64_t;
 
 static inline uint16_t fdt16_to_cpu(fdt16_t x)
 {
-	return (__force uint16_t)CPU_TO_FDT16(x);
+	return (FDT_FORCE uint16_t)CPU_TO_FDT16(x);
 }
 static inline fdt16_t cpu_to_fdt16(uint16_t x)
 {
-	return (__force fdt16_t)CPU_TO_FDT16(x);
+	return (FDT_FORCE fdt16_t)CPU_TO_FDT16(x);
 }
 
 static inline uint32_t fdt32_to_cpu(fdt32_t x)
 {
-	return (__force uint32_t)CPU_TO_FDT32(x);
+	return (FDT_FORCE uint32_t)CPU_TO_FDT32(x);
 }
 static inline fdt32_t cpu_to_fdt32(uint32_t x)
 {
-	return (__force fdt32_t)CPU_TO_FDT32(x);
+	return (FDT_FORCE fdt32_t)CPU_TO_FDT32(x);
 }
 
 static inline uint64_t fdt64_to_cpu(fdt64_t x)
 {
-	return (__force uint64_t)CPU_TO_FDT64(x);
+	return (FDT_FORCE uint64_t)CPU_TO_FDT64(x);
 }
 static inline fdt64_t cpu_to_fdt64(uint64_t x)
 {
-	return (__force fdt64_t)CPU_TO_FDT64(x);
+	return (FDT_FORCE fdt64_t)CPU_TO_FDT64(x);
 }
 #undef CPU_TO_FDT64
 #undef CPU_TO_FDT32
 #undef CPU_TO_FDT16
 #undef EXTRACT_BYTE
 
-#endif /* _LIBFDT_ENV_H */
+#ifdef __APPLE__
+#include <AvailabilityMacros.h>
+
+/* strnlen() is not available on Mac OS < 10.7 */
+# if !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED < \
+                                         MAC_OS_X_VERSION_10_7)
+
+#define strnlen fdt_strnlen
+
+/*
+ * fdt_strnlen: returns the length of a string or max_count - which ever is
+ * smallest.
+ * Input 1 string: the string whose size is to be determined
+ * Input 2 max_count: the maximum value returned by this function
+ * Output: length of the string or max_count (the smallest of the two)
+ */
+static inline size_t fdt_strnlen(const char *string, size_t max_count)
+{
+    const char *p = memchr(string, 0, max_count);
+    return p ? p - string : max_count;
+}
+
+#endif /* !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED <
+          MAC_OS_X_VERSION_10_7) */
+
+#endif /* __APPLE__ */
+
+#endif /* LIBFDT_ENV_H */
diff --git a/scripts/dtc/libfdt_internal.h b/scripts/dtc/libfdt_internal.h
index 02cfa6fb61..7681e19229 100644
--- a/scripts/dtc/libfdt_internal.h
+++ b/scripts/dtc/libfdt_internal.h
@@ -1,5 +1,5 @@
-#ifndef _LIBFDT_INTERNAL_H
-#define _LIBFDT_INTERNAL_H
+#ifndef LIBFDT_INTERNAL_H
+#define LIBFDT_INTERNAL_H
 /*
  * libfdt - Flat Device Tree manipulation
  * Copyright (C) 2006 David Gibson, IBM Corporation.
@@ -57,27 +57,27 @@
 
 #define FDT_CHECK_HEADER(fdt) \
 	{ \
-		int __err; \
-		if ((__err = fdt_check_header(fdt)) != 0) \
-			return __err; \
+		int err_; \
+		if ((err_ = fdt_check_header(fdt)) != 0) \
+			return err_; \
 	}
 
-int _fdt_check_node_offset(const void *fdt, int offset);
-int _fdt_check_prop_offset(const void *fdt, int offset);
-const char *_fdt_find_string(const char *strtab, int tabsize, const char *s);
-int _fdt_node_end_offset(void *fdt, int nodeoffset);
+int fdt_check_node_offset_(const void *fdt, int offset);
+int fdt_check_prop_offset_(const void *fdt, int offset);
+const char *fdt_find_string_(const char *strtab, int tabsize, const char *s);
+int fdt_node_end_offset_(void *fdt, int nodeoffset);
 
-static inline const void *_fdt_offset_ptr(const void *fdt, int offset)
+static inline const void *fdt_offset_ptr_(const void *fdt, int offset)
 {
 	return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
 }
 
-static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
+static inline void *fdt_offset_ptr_w_(void *fdt, int offset)
 {
-	return (void *)(uintptr_t)_fdt_offset_ptr(fdt, offset);
+	return (void *)(uintptr_t)fdt_offset_ptr_(fdt, offset);
 }
 
-static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
+static inline const struct fdt_reserve_entry *fdt_mem_rsv_(const void *fdt, int n)
 {
 	const struct fdt_reserve_entry *rsv_table =
 		(const struct fdt_reserve_entry *)
@@ -85,11 +85,11 @@ static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int
 
 	return rsv_table + n;
 }
-static inline struct fdt_reserve_entry *_fdt_mem_rsv_w(void *fdt, int n)
+static inline struct fdt_reserve_entry *fdt_mem_rsv_w_(void *fdt, int n)
 {
-	return (void *)(uintptr_t)_fdt_mem_rsv(fdt, n);
+	return (void *)(uintptr_t)fdt_mem_rsv_(fdt, n);
 }
 
 #define FDT_SW_MAGIC		(~FDT_MAGIC)
 
-#endif /* _LIBFDT_INTERNAL_H */
+#endif /* LIBFDT_INTERNAL_H */
diff --git a/scripts/dtc/livetree.c b/scripts/dtc/livetree.c
index e229b84432..57b7db2ed1 100644
--- a/scripts/dtc/livetree.c
+++ b/scripts/dtc/livetree.c
@@ -204,7 +204,7 @@ struct node *merge_nodes(struct node *old_node, struct node *new_node)
 			}
 		}
 
-		/* if no collision occured, add child to the old node. */
+		/* if no collision occurred, add child to the old node. */
 		if (new_child)
 			add_child(old_node, new_child);
 	}
@@ -216,6 +216,29 @@ struct node *merge_nodes(struct node *old_node, struct node *new_node)
 	return old_node;
 }
 
+struct node * add_orphan_node(struct node *dt, struct node *new_node, char *ref)
+{
+	static unsigned int next_orphan_fragment = 0;
+	struct node *node;
+	struct property *p;
+	struct data d = empty_data;
+	char *name;
+
+	d = data_add_marker(d, REF_PHANDLE, ref);
+	d = data_append_integer(d, 0xffffffff, 32);
+
+	p = build_property("target", d);
+
+	xasprintf(&name, "fragment@%u",
+			next_orphan_fragment++);
+	name_node(new_node, "__overlay__");
+	node = build_node(p, new_node);
+	name_node(node, name);
+
+	add_child(dt, node);
+	return dt;
+}
+
 struct node *chain_node(struct node *first, struct node *list)
 {
 	assert(first->next_sibling == NULL);
@@ -242,7 +265,7 @@ void delete_property_by_name(struct node *node, char *name)
 	struct property *prop = node->proplist;
 
 	while (prop) {
-		if (!strcmp(prop->name, name)) {
+		if (streq(prop->name, name)) {
 			delete_property(prop);
 			return;
 		}
@@ -275,7 +298,7 @@ void delete_node_by_name(struct node *parent, char *name)
 	struct node *node = parent->children;
 
 	while (node) {
-		if (!strcmp(node->name, name)) {
+		if (streq(node->name, name)) {
 			delete_node(node);
 			return;
 		}
@@ -296,14 +319,31 @@ void delete_node(struct node *node)
 	delete_labels(&node->labels);
 }
 
+void append_to_property(struct node *node,
+				    char *name, const void *data, int len)
+{
+	struct data d;
+	struct property *p;
+
+	p = get_property(node, name);
+	if (p) {
+		d = data_append_data(p->val, data, len);
+		p->val = d;
+	} else {
+		d = data_append_data(empty_data, data, len);
+		p = build_property(name, d);
+		add_property(node, p);
+	}
+}
+
 struct reserve_info *build_reserve_entry(uint64_t address, uint64_t size)
 {
 	struct reserve_info *new = xmalloc(sizeof(*new));
 
 	memset(new, 0, sizeof(*new));
 
-	new->re.address = address;
-	new->re.size = size;
+	new->address = address;
+	new->size = size;
 
 	return new;
 }
@@ -335,17 +375,19 @@ struct reserve_info *add_reserve_entry(struct reserve_info *list,
 	return list;
 }
 
-struct boot_info *build_boot_info(struct reserve_info *reservelist,
-				  struct node *tree, uint32_t boot_cpuid_phys)
+struct dt_info *build_dt_info(unsigned int dtsflags,
+			      struct reserve_info *reservelist,
+			      struct node *tree, uint32_t boot_cpuid_phys)
 {
-	struct boot_info *bi;
+	struct dt_info *dti;
 
-	bi = xmalloc(sizeof(*bi));
-	bi->reservelist = reservelist;
-	bi->dt = tree;
-	bi->boot_cpuid_phys = boot_cpuid_phys;
+	dti = xmalloc(sizeof(*dti));
+	dti->dtsflags = dtsflags;
+	dti->reservelist = reservelist;
+	dti->dt = tree;
+	dti->boot_cpuid_phys = boot_cpuid_phys;
 
-	return bi;
+	return dti;
 }
 
 /*
@@ -374,7 +416,13 @@ struct property *get_property(struct node *node, const char *propname)
 cell_t propval_cell(struct property *prop)
 {
 	assert(prop->val.len == sizeof(cell_t));
-	return fdt32_to_cpu(*((cell_t *)prop->val.val));
+	return fdt32_to_cpu(*((fdt32_t *)prop->val.val));
+}
+
+cell_t propval_cell_n(struct property *prop, int n)
+{
+	assert(prop->val.len / sizeof(cell_t) >= n);
+	return fdt32_to_cpu(*((fdt32_t *)prop->val.val + n));
 }
 
 struct property *get_property_by_label(struct node *tree, const char *label,
@@ -459,7 +507,8 @@ struct node *get_node_by_path(struct node *tree, const char *path)
 	p = strchr(path, '/');
 
 	for_each_child(tree, child) {
-		if (p && strneq(path, child->name, p-path))
+		if (p && (strlen(child->name) == p-path) &&
+		    strprefixeq(path, p - path, child->name))
 			return get_node_by_path(child, p+1);
 		else if (!p && streq(path, child->name))
 			return child;
@@ -492,7 +541,10 @@ struct node *get_node_by_phandle(struct node *tree, cell_t phandle)
 {
 	struct node *child, *node;
 
-	assert((phandle != 0) && (phandle != -1));
+	if ((phandle == 0) || (phandle == -1)) {
+		assert(generate_fixups);
+		return NULL;
+	}
 
 	if (tree->phandle == phandle) {
 		if (tree->deleted)
@@ -580,24 +632,24 @@ static int cmp_reserve_info(const void *ax, const void *bx)
 	a = *((const struct reserve_info * const *)ax);
 	b = *((const struct reserve_info * const *)bx);
 
-	if (a->re.address < b->re.address)
+	if (a->address < b->address)
 		return -1;
-	else if (a->re.address > b->re.address)
+	else if (a->address > b->address)
 		return 1;
-	else if (a->re.size < b->re.size)
+	else if (a->size < b->size)
 		return -1;
-	else if (a->re.size > b->re.size)
+	else if (a->size > b->size)
 		return 1;
 	else
 		return 0;
 }
 
-static void sort_reserve_entries(struct boot_info *bi)
+static void sort_reserve_entries(struct dt_info *dti)
 {
 	struct reserve_info *ri, **tbl;
 	int n = 0, i = 0;
 
-	for (ri = bi->reservelist;
+	for (ri = dti->reservelist;
 	     ri;
 	     ri = ri->next)
 		n++;
@@ -607,14 +659,14 @@ static void sort_reserve_entries(struct boot_info *bi)
 
 	tbl = xmalloc(n * sizeof(*tbl));
 
-	for (ri = bi->reservelist;
+	for (ri = dti->reservelist;
 	     ri;
 	     ri = ri->next)
 		tbl[i++] = ri;
 
 	qsort(tbl, n, sizeof(*tbl), cmp_reserve_info);
 
-	bi->reservelist = tbl[0];
+	dti->reservelist = tbl[0];
 	for (i = 0; i < (n-1); i++)
 		tbl[i]->next = tbl[i+1];
 	tbl[n-1]->next = NULL;
@@ -704,8 +756,258 @@ static void sort_node(struct node *node)
 		sort_node(c);
 }
 
-void sort_tree(struct boot_info *bi)
+void sort_tree(struct dt_info *dti)
+{
+	sort_reserve_entries(dti);
+	sort_node(dti->dt);
+}
+
+/* utility helper to avoid code duplication */
+static struct node *build_and_name_child_node(struct node *parent, char *name)
+{
+	struct node *node;
+
+	node = build_node(NULL, NULL);
+	name_node(node, xstrdup(name));
+	add_child(parent, node);
+
+	return node;
+}
+
+static struct node *build_root_node(struct node *dt, char *name)
+{
+	struct node *an;
+
+	an = get_subnode(dt, name);
+	if (!an)
+		an = build_and_name_child_node(dt, name);
+
+	if (!an)
+		die("Could not build root node /%s\n", name);
+
+	return an;
+}
+
+static bool any_label_tree(struct dt_info *dti, struct node *node)
+{
+	struct node *c;
+
+	if (node->labels)
+		return true;
+
+	for_each_child(node, c)
+		if (any_label_tree(dti, c))
+			return true;
+
+	return false;
+}
+
+static void generate_label_tree_internal(struct dt_info *dti,
+					 struct node *an, struct node *node,
+					 bool allocph)
 {
-	sort_reserve_entries(bi);
-	sort_node(bi->dt);
+	struct node *dt = dti->dt;
+	struct node *c;
+	struct property *p;
+	struct label *l;
+
+	/* if there are labels */
+	if (node->labels) {
+
+		/* now add the label in the node */
+		for_each_label(node->labels, l) {
+
+			/* check whether the label already exists */
+			p = get_property(an, l->label);
+			if (p) {
+				fprintf(stderr, "WARNING: label %s already"
+					" exists in /%s", l->label,
+					an->name);
+				continue;
+			}
+
+			/* insert it */
+			p = build_property(l->label,
+				data_copy_mem(node->fullpath,
+						strlen(node->fullpath) + 1));
+			add_property(an, p);
+		}
+
+		/* force allocation of a phandle for this node */
+		if (allocph)
+			(void)get_node_phandle(dt, node);
+	}
+
+	for_each_child(node, c)
+		generate_label_tree_internal(dti, an, c, allocph);
+}
+
+static bool any_fixup_tree(struct dt_info *dti, struct node *node)
+{
+	struct node *c;
+	struct property *prop;
+	struct marker *m;
+
+	for_each_property(node, prop) {
+		m = prop->val.markers;
+		for_each_marker_of_type(m, REF_PHANDLE) {
+			if (!get_node_by_ref(dti->dt, m->ref))
+				return true;
+		}
+	}
+
+	for_each_child(node, c) {
+		if (any_fixup_tree(dti, c))
+			return true;
+	}
+
+	return false;
+}
+
+static void add_fixup_entry(struct dt_info *dti, struct node *fn,
+			    struct node *node, struct property *prop,
+			    struct marker *m)
+{
+	char *entry;
+
+	/* m->ref can only be a REF_PHANDLE, but check anyway */
+	assert(m->type == REF_PHANDLE);
+
+	/* there shouldn't be any ':' in the arguments */
+	if (strchr(node->fullpath, ':') || strchr(prop->name, ':'))
+		die("arguments should not contain ':'\n");
+
+	xasprintf(&entry, "%s:%s:%u",
+			node->fullpath, prop->name, m->offset);
+	append_to_property(fn, m->ref, entry, strlen(entry) + 1);
+
+	free(entry);
+}
+
+static void generate_fixups_tree_internal(struct dt_info *dti,
+					  struct node *fn,
+					  struct node *node)
+{
+	struct node *dt = dti->dt;
+	struct node *c;
+	struct property *prop;
+	struct marker *m;
+	struct node *refnode;
+
+	for_each_property(node, prop) {
+		m = prop->val.markers;
+		for_each_marker_of_type(m, REF_PHANDLE) {
+			refnode = get_node_by_ref(dt, m->ref);
+			if (!refnode)
+				add_fixup_entry(dti, fn, node, prop, m);
+		}
+	}
+
+	for_each_child(node, c)
+		generate_fixups_tree_internal(dti, fn, c);
+}
+
+static bool any_local_fixup_tree(struct dt_info *dti, struct node *node)
+{
+	struct node *c;
+	struct property *prop;
+	struct marker *m;
+
+	for_each_property(node, prop) {
+		m = prop->val.markers;
+		for_each_marker_of_type(m, REF_PHANDLE) {
+			if (get_node_by_ref(dti->dt, m->ref))
+				return true;
+		}
+	}
+
+	for_each_child(node, c) {
+		if (any_local_fixup_tree(dti, c))
+			return true;
+	}
+
+	return false;
+}
+
+static void add_local_fixup_entry(struct dt_info *dti,
+		struct node *lfn, struct node *node,
+		struct property *prop, struct marker *m,
+		struct node *refnode)
+{
+	struct node *wn, *nwn;	/* local fixup node, walk node, new */
+	fdt32_t value_32;
+	char **compp;
+	int i, depth;
+
+	/* walk back retreiving depth */
+	depth = 0;
+	for (wn = node; wn; wn = wn->parent)
+		depth++;
+
+	/* allocate name array */
+	compp = xmalloc(sizeof(*compp) * depth);
+
+	/* store names in the array */
+	for (wn = node, i = depth - 1; wn; wn = wn->parent, i--)
+		compp[i] = wn->name;
+
+	/* walk the path components creating nodes if they don't exist */
+	for (wn = lfn, i = 1; i < depth; i++, wn = nwn) {
+		/* if no node exists, create it */
+		nwn = get_subnode(wn, compp[i]);
+		if (!nwn)
+			nwn = build_and_name_child_node(wn, compp[i]);
+	}
+
+	free(compp);
+
+	value_32 = cpu_to_fdt32(m->offset);
+	append_to_property(wn, prop->name, &value_32, sizeof(value_32));
+}
+
+static void generate_local_fixups_tree_internal(struct dt_info *dti,
+						struct node *lfn,
+						struct node *node)
+{
+	struct node *dt = dti->dt;
+	struct node *c;
+	struct property *prop;
+	struct marker *m;
+	struct node *refnode;
+
+	for_each_property(node, prop) {
+		m = prop->val.markers;
+		for_each_marker_of_type(m, REF_PHANDLE) {
+			refnode = get_node_by_ref(dt, m->ref);
+			if (refnode)
+				add_local_fixup_entry(dti, lfn, node, prop, m, refnode);
+		}
+	}
+
+	for_each_child(node, c)
+		generate_local_fixups_tree_internal(dti, lfn, c);
+}
+
+void generate_label_tree(struct dt_info *dti, char *name, bool allocph)
+{
+	if (!any_label_tree(dti, dti->dt))
+		return;
+	generate_label_tree_internal(dti, build_root_node(dti->dt, name),
+				     dti->dt, allocph);
+}
+
+void generate_fixups_tree(struct dt_info *dti, char *name)
+{
+	if (!any_fixup_tree(dti, dti->dt))
+		return;
+	generate_fixups_tree_internal(dti, build_root_node(dti->dt, name),
+				      dti->dt);
+}
+
+void generate_local_fixups_tree(struct dt_info *dti, char *name)
+{
+	if (!any_local_fixup_tree(dti, dti->dt))
+		return;
+	generate_local_fixups_tree_internal(dti, build_root_node(dti->dt, name),
+					    dti->dt);
 }
diff --git a/scripts/dtc/srcpos.c b/scripts/dtc/srcpos.c
index f534c22a88..cb6ed0e3e5 100644
--- a/scripts/dtc/srcpos.c
+++ b/scripts/dtc/srcpos.c
@@ -209,8 +209,6 @@ struct srcpos srcpos_empty = {
 	.file = NULL,
 };
 
-#define TAB_SIZE      8
-
 void srcpos_update(struct srcpos *pos, const char *text, int len)
 {
 	int i;
@@ -224,9 +222,6 @@ void srcpos_update(struct srcpos *pos, const char *text, int len)
 		if (text[i] == '\n') {
 			current_srcfile->lineno++;
 			current_srcfile->colno = 1;
-		} else if (text[i] == '\t') {
-			current_srcfile->colno =
-				ALIGN(current_srcfile->colno, TAB_SIZE);
 		} else {
 			current_srcfile->colno++;
 		}
@@ -246,46 +241,27 @@ srcpos_copy(struct srcpos *pos)
 	return pos_new;
 }
 
-
-
-void
-srcpos_dump(struct srcpos *pos)
-{
-	printf("file        : \"%s\"\n",
-	       pos->file ? (char *) pos->file : "<no file>");
-	printf("first_line  : %d\n", pos->first_line);
-	printf("first_column: %d\n", pos->first_column);
-	printf("last_line   : %d\n", pos->last_line);
-	printf("last_column : %d\n", pos->last_column);
-	printf("file        : %s\n", pos->file->name);
-}
-
-
 char *
 srcpos_string(struct srcpos *pos)
 {
 	const char *fname = "<no-file>";
 	char *pos_str;
-	int rc;
 
-	if (pos)
+	if (pos->file && pos->file->name)
 		fname = pos->file->name;
 
 
 	if (pos->first_line != pos->last_line)
-		rc = asprintf(&pos_str, "%s:%d.%d-%d.%d", fname,
-			      pos->first_line, pos->first_column,
-			      pos->last_line, pos->last_column);
+		xasprintf(&pos_str, "%s:%d.%d-%d.%d", fname,
+			  pos->first_line, pos->first_column,
+			  pos->last_line, pos->last_column);
 	else if (pos->first_column != pos->last_column)
-		rc = asprintf(&pos_str, "%s:%d.%d-%d", fname,
-			      pos->first_line, pos->first_column,
-			      pos->last_column);
+		xasprintf(&pos_str, "%s:%d.%d-%d", fname,
+			  pos->first_line, pos->first_column,
+			  pos->last_column);
 	else
-		rc = asprintf(&pos_str, "%s:%d.%d", fname,
-			      pos->first_line, pos->first_column);
-
-	if (rc == -1)
-		die("Couldn't allocate in srcpos string");
+		xasprintf(&pos_str, "%s:%d.%d", fname,
+			  pos->first_line, pos->first_column);
 
 	return pos_str;
 }
diff --git a/scripts/dtc/srcpos.h b/scripts/dtc/srcpos.h
index f81827bd68..9ded12a383 100644
--- a/scripts/dtc/srcpos.h
+++ b/scripts/dtc/srcpos.h
@@ -17,11 +17,12 @@
  *                                                                   USA
  */
 
-#ifndef _SRCPOS_H_
-#define _SRCPOS_H_
+#ifndef SRCPOS_H
+#define SRCPOS_H
 
 #include <stdio.h>
 #include <stdbool.h>
+#include "util.h"
 
 struct srcfile_state {
 	FILE *f;
@@ -105,15 +106,12 @@ extern struct srcpos srcpos_empty;
 extern void srcpos_update(struct srcpos *pos, const char *text, int len);
 extern struct srcpos *srcpos_copy(struct srcpos *pos);
 extern char *srcpos_string(struct srcpos *pos);
-extern void srcpos_dump(struct srcpos *pos);
 
-extern void srcpos_verror(struct srcpos *pos, const char *prefix,
-			  const char *fmt, va_list va)
-	__attribute__((format(printf, 3, 0)));
-extern void srcpos_error(struct srcpos *pos, const char *prefix,
-			 const char *fmt, ...)
-	__attribute__((format(printf, 3, 4)));
+extern void PRINTF(3, 0) srcpos_verror(struct srcpos *pos, const char *prefix,
+					const char *fmt, va_list va);
+extern void PRINTF(3, 4) srcpos_error(struct srcpos *pos, const char *prefix,
+				      const char *fmt, ...);
 
 extern void srcpos_set_line(char *f, int l);
 
-#endif /* _SRCPOS_H_ */
+#endif /* SRCPOS_H */
diff --git a/scripts/dtc/treesource.c b/scripts/dtc/treesource.c
index a55d1d128c..2461a3d068 100644
--- a/scripts/dtc/treesource.c
+++ b/scripts/dtc/treesource.c
@@ -25,12 +25,12 @@ extern FILE *yyin;
 extern int yyparse(void);
 extern YYLTYPE yylloc;
 
-struct boot_info *the_boot_info;
+struct dt_info *parser_output;
 bool treesource_error;
 
-struct boot_info *dt_from_source(const char *fname)
+struct dt_info *dt_from_source(const char *fname)
 {
-	the_boot_info = NULL;
+	parser_output = NULL;
 	treesource_error = false;
 
 	srcfile_push(fname);
@@ -43,7 +43,7 @@ struct boot_info *dt_from_source(const char *fname)
 	if (treesource_error)
 		die("Syntax error parsing input tree\n");
 
-	return the_boot_info;
+	return parser_output;
 }
 
 static void write_prefix(FILE *f, int level)
@@ -137,7 +137,7 @@ static void write_propval_string(FILE *f, struct data val)
 static void write_propval_cells(FILE *f, struct data val)
 {
 	void *propend = val.val + val.len;
-	cell_t *cp = (cell_t *)val.val;
+	fdt32_t *cp = (fdt32_t *)val.val;
 	struct marker *m = val.markers;
 
 	fprintf(f, "<");
@@ -263,22 +263,22 @@ static void write_tree_source_node(FILE *f, struct node *tree, int level)
 }
 
 
-void dt_to_source(FILE *f, struct boot_info *bi)
+void dt_to_source(FILE *f, struct dt_info *dti)
 {
 	struct reserve_info *re;
 
 	fprintf(f, "/dts-v1/;\n\n");
 
-	for (re = bi->reservelist; re; re = re->next) {
+	for (re = dti->reservelist; re; re = re->next) {
 		struct label *l;
 
 		for_each_label(re->labels, l)
 			fprintf(f, "%s: ", l->label);
 		fprintf(f, "/memreserve/\t0x%016llx 0x%016llx;\n",
-			(unsigned long long)re->re.address,
-			(unsigned long long)re->re.size);
+			(unsigned long long)re->address,
+			(unsigned long long)re->size);
 	}
 
-	write_tree_source_node(f, bi->dt, 0);
+	write_tree_source_node(f, dti->dt, 0);
 }
 
diff --git a/scripts/dtc/update-dtc-source.sh b/scripts/dtc/update-dtc-source.sh
index 075d1d7af0..1a009fd195 100755
--- a/scripts/dtc/update-dtc-source.sh
+++ b/scripts/dtc/update-dtc-source.sh
@@ -1,9 +1,10 @@
 #!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
 # Simple script to update the version of DTC carried by the Linux kernel
 #
 # This script assumes that the dtc and the linux git trees are in the
 # same directory. After building dtc in the dtc directory, it copies the
-# source files and generated source files into the scripts/dtc directory
+# source files and generated source file(s) into the scripts/dtc directory
 # in the kernel and creates a git commit updating them to the new
 # version.
 #
@@ -32,16 +33,24 @@ DTC_LINUX_PATH=`pwd`/scripts/dtc
 
 DTC_SOURCE="checks.c data.c dtc.c dtc.h flattree.c fstree.c livetree.c srcpos.c \
 		srcpos.h treesource.c util.c util.h version_gen.h Makefile.dtc \
-		dtc-lexer.l dtc-parser.y fdtdump.c fdtput.c fdtget.c"
-DTC_LIB="fdt.c fdt.h fdt_addresses.c fdt_empty_tree.c fdt_ro.c fdt_rw.c \
-		fdt_strerror.c fdt_sw.c fdt_wip.c libfdt.h libfdt_env.h \
-		libfdt_internal.h"
-DTC_GENERATED="dtc-lexer.lex.c dtc-parser.tab.c dtc-parser.tab.h"
+		dtc-lexer.l dtc-parser.y"
+LIBFDT_SOURCE="Makefile.libfdt fdt.c fdt.h fdt_addresses.c fdt_empty_tree.c \
+		fdt_overlay.c fdt_ro.c fdt_rw.c fdt_strerror.c fdt_sw.c \
+		fdt_wip.c libfdt.h libfdt_env.h libfdt_internal.h"
+
+get_last_dtc_version() {
+	git log --oneline scripts/dtc/ | grep 'upstream' | head -1 | sed -e 's/^.* \(.*\)/\1/'
+}
+
+last_dtc_ver=$(get_last_dtc_version)
 
 # Build DTC
 cd $DTC_UPSTREAM_PATH
 make clean
 make check
+dtc_version=$(git describe HEAD)
+dtc_log=$(git log --oneline ${last_dtc_ver}..)
+
 
 # Copy the files into the Linux tree
 cd $DTC_LINUX_PATH
@@ -49,13 +58,22 @@ for f in $DTC_SOURCE; do
 	cp ${DTC_UPSTREAM_PATH}/${f} ${f}
 	git add ${f}
 done
-for f in $DTC_LIB; do
-	cp ${DTC_UPSTREAM_PATH}/libfdt/${f} ${f}
-	git add ${f}
-done
-for f in $DTC_GENERATED; do
-	cp ${DTC_UPSTREAM_PATH}/$f ${f}_shipped
-	git add ${f}_shipped
+for f in $LIBFDT_SOURCE; do
+       cp ${DTC_UPSTREAM_PATH}/libfdt/${f} libfdt/${f}
+       git add libfdt/${f}
 done
 
-git commit -e -v -m "scripts/dtc: Update to upstream version [CHANGEME]"
+sed -i -- 's/#include <libfdt_env.h>/#include "libfdt_env.h"/g' ./libfdt/libfdt.h
+sed -i -- 's/#include <fdt.h>/#include "fdt.h"/g' ./libfdt/libfdt.h
+git add ./libfdt/libfdt.h
+
+commit_msg=$(cat << EOF
+scripts/dtc: Update to upstream version ${dtc_version}
+
+This adds the following commits from upstream:
+
+${dtc_log}
+EOF
+)
+
+git commit -e -v -s -m "${commit_msg}"
diff --git a/scripts/dtc/util.c b/scripts/dtc/util.c
index 9d65226df9..9953c32a02 100644
--- a/scripts/dtc/util.c
+++ b/scripts/dtc/util.c
@@ -46,6 +46,36 @@ char *xstrdup(const char *s)
 	return d;
 }
 
+/* based in part from (3) vsnprintf */
+int xasprintf(char **strp, const char *fmt, ...)
+{
+	int n, size = 128;	/* start with 128 bytes */
+	char *p;
+	va_list ap;
+
+	/* initial pointer is NULL making the fist realloc to be malloc */
+	p = NULL;
+	while (1) {
+		p = xrealloc(p, size);
+
+		/* Try to print in the allocated space. */
+		va_start(ap, fmt);
+		n = vsnprintf(p, size, fmt, ap);
+		va_end(ap);
+
+		/* If that worked, return the string. */
+		if (n > -1 && n < size)
+			break;
+		/* Else try again with more space. */
+		if (n > -1)	/* glibc 2.1 */
+			size = n + 1; /* precisely what is needed */
+		else		/* glibc 2.0 */
+			size *= 2; /* twice the old size */
+	}
+	*strp = p;
+	return strlen(p);
+}
+
 char *join_path(const char *path, const char *name)
 {
 	int lenp = strlen(path);
@@ -152,7 +182,6 @@ char get_escape_char(const char *s, int *i)
 	int	j = *i + 1;
 	char	val;
 
-	assert(c);
 	switch (c) {
 	case 'a':
 		val = '\a';
@@ -349,7 +378,6 @@ int utilfdt_decode_type(const char *fmt, int *type, int *size)
 void utilfdt_print_data(const char *data, int len)
 {
 	int i;
-	const char *p = data;
 	const char *s;
 
 	/* no data, don't print */
@@ -368,7 +396,7 @@ void utilfdt_print_data(const char *data, int len)
 		} while (s < data + len);
 
 	} else if ((len % 4) == 0) {
-		const uint32_t *cell = (const uint32_t *)data;
+		const fdt32_t *cell = (const fdt32_t *)data;
 
 		printf(" = <");
 		for (i = 0, len /= 4; i < len; i++)
@@ -376,6 +404,7 @@ void utilfdt_print_data(const char *data, int len)
 			       i < (len - 1) ? " " : "");
 		printf(">");
 	} else {
+		const unsigned char *p = (const unsigned char *)data;
 		printf(" = [");
 		for (i = 0; i < len; i++)
 			printf("%02x%s", *p++, i < len - 1 ? " " : "");
@@ -383,15 +412,16 @@ void utilfdt_print_data(const char *data, int len)
 	}
 }
 
-void util_version(void)
+void NORETURN util_version(void)
 {
 	printf("Version: %s\n", DTC_VERSION);
 	exit(0);
 }
 
-void util_usage(const char *errmsg, const char *synopsis,
-		const char *short_opts, struct option const long_opts[],
-		const char * const opts_help[])
+void NORETURN util_usage(const char *errmsg, const char *synopsis,
+			 const char *short_opts,
+			 struct option const long_opts[],
+			 const char * const opts_help[])
 {
 	FILE *fp = errmsg ? stderr : stdout;
 	const char a_arg[] = "<arg>";
diff --git a/scripts/dtc/util.h b/scripts/dtc/util.h
index ccfdf4b124..66fba8ea70 100644
--- a/scripts/dtc/util.h
+++ b/scripts/dtc/util.h
@@ -1,5 +1,5 @@
-#ifndef _UTIL_H
-#define _UTIL_H
+#ifndef UTIL_H
+#define UTIL_H
 
 #include <stdarg.h>
 #include <stdbool.h>
@@ -25,15 +25,27 @@
  *                                                                   USA
  */
 
+#ifdef __GNUC__
+#define PRINTF(i, j)	__attribute__((format (printf, i, j)))
+#define NORETURN	__attribute__((noreturn))
+#else
+#define PRINTF(i, j)
+#define NORETURN
+#endif
+
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 
-static inline void __attribute__((noreturn)) die(const char *str, ...)
+#define stringify(s)	stringify_(s)
+#define stringify_(s)	#s
+
+static inline void NORETURN PRINTF(1, 2) die(const char *str, ...)
 {
 	va_list ap;
 
 	va_start(ap, str);
 	fprintf(stderr, "FATAL ERROR: ");
 	vfprintf(stderr, str, ap);
+	va_end(ap);
 	exit(1);
 }
 
@@ -52,12 +64,14 @@ static inline void *xrealloc(void *p, size_t len)
 	void *new = realloc(p, len);
 
 	if (!new)
-		die("realloc() failed (len=%d)\n", len);
+		die("realloc() failed (len=%zd)\n", len);
 
 	return new;
 }
 
 extern char *xstrdup(const char *s);
+
+extern int PRINTF(2, 3) xasprintf(char **strp, const char *fmt, ...);
 extern char *join_path(const char *path, const char *name);
 
 /**
@@ -186,7 +200,7 @@ void utilfdt_print_data(const char *data, int len);
 /**
  * Show source version and exit
  */
-void util_version(void) __attribute__((noreturn));
+void NORETURN util_version(void);
 
 /**
  * Show usage and exit
@@ -200,9 +214,10 @@ void util_version(void) __attribute__((noreturn));
  * @param long_opts	The structure of long options
  * @param opts_help	An array of help strings (should align with long_opts)
  */
-void util_usage(const char *errmsg, const char *synopsis,
-		const char *short_opts, struct option const long_opts[],
-		const char * const opts_help[]) __attribute__((noreturn));
+void NORETURN util_usage(const char *errmsg, const char *synopsis,
+			 const char *short_opts,
+			 struct option const long_opts[],
+			 const char * const opts_help[]);
 
 /**
  * Show usage and exit
@@ -248,4 +263,4 @@ void util_usage(const char *errmsg, const char *synopsis,
 	case 'V': util_version(); \
 	case '?': usage("unknown option");
 
-#endif /* _UTIL_H */
+#endif /* UTIL_H */
diff --git a/scripts/dtc/version_gen.h b/scripts/dtc/version_gen.h
index 607afac1cd..89d4e0ad1d 100644
--- a/scripts/dtc/version_gen.h
+++ b/scripts/dtc/version_gen.h
@@ -1 +1 @@
-#define DTC_VERSION "DTC 1.4.1"
+#define DTC_VERSION "DTC 1.4.6"
diff --git a/scripts/imx/Kconfig b/scripts/imx/Kconfig
index fda9c639c1..ef83fa14dd 100644
--- a/scripts/imx/Kconfig
+++ b/scripts/imx/Kconfig
@@ -1,6 +1,6 @@
 config ARCH_IMX_USBLOADER
-	depends on ARCH_MXS || ARCH_IMX
-	bool "compile imx-usb-loader"
+	depends on ARCH_MXS || ARCH_IMX || COMPILE_HOST_TOOLS
+	bool "imx-usb-loader"
 	help
 	  imx-usb-loader is a tool to upload and start imximages to an i.MX SoC
 	  in ROM boot mode. It requires libusb, so make sure you have the libusb
diff --git a/scripts/mkimage.c b/scripts/mkimage.c
index c7267a2d1c..891d7b6de7 100644
--- a/scripts/mkimage.c
+++ b/scripts/mkimage.c
@@ -150,7 +150,7 @@ image_set_hdr_u8(comp);		/* image_set_comp */
 
 static inline void image_set_name(image_header_t *hdr, const char *name)
 {
-	strncpy(image_get_name(hdr), name, IH_NMLEN);
+	strncpy(image_get_name(hdr), name, IH_NMLEN - 1);
 }
 
 /**
diff --git a/scripts/omap3-usb-loader.c b/scripts/omap3-usb-loader.c
index edf6043edf..3ba9af0652 100644
--- a/scripts/omap3-usb-loader.c
+++ b/scripts/omap3-usb-loader.c
@@ -354,12 +354,10 @@ static unsigned char *read_file(char *path, size_t *readamt)
 	size_t iter = 0;
 
 	while (1) {
-		if (iter >= iter) {
-			allocsize += 1024;
-			data = realloc(data, allocsize);
-			if (!data)
-				return NULL;
-		}
+		allocsize += 1024;
+		data = realloc(data, allocsize);
+		if (!data)
+			return NULL;
 
 		size_t readsize = allocsize - iter;
 		size_t ret = fread(data + iter, sizeof (unsigned char), readsize, fp);