1 files changed, 0 insertions, 337 deletions

diff --git a/target/linux/generic/pending-5.10/400-mtd-mtdsplit-support.patch b/target/linux/generic/pending-5.10/400-mtd-mtdsplit-support.patch
deleted file mode 100644
index 89cac88717..0000000000
--- a/target/linux/generic/pending-5.10/400-mtd-mtdsplit-support.patch
+++ /dev/null
@@ -1,337 +0,0 @@
-From: Gabor Juhos <juhosg@openwrt.org>
-Subject: mtd: Add new Kconfig option for firmware partition split
-
-Add a new kernel config option for generic firmware partition
-split support and change the uImage split support to depend on
-the new option. Aslo rename the MTD_UIMAGE_SPLIT_NAME option to
-MTD_SPLIT_FIRMWARE_NAME to make it more generic.
-
-The patch is in preparation for multiple firmware format
-support.
-
-Submitted-by: Gabor Juhos <juhosg@openwrt.org>
-
-SVN-Revision: 38002
----
- drivers/mtd/Kconfig                           |  19 +
- drivers/mtd/mtdpart.c                         | 144 +++++++++++++-----
- include/linux/mtd/partitions.h                |   7 +
- drivers/mtd/Makefile                          |   2 +
- include/linux/mtd/mtd.h                       |  25 +
- 5 files changed, 171 insertions(+), 25 deletions(-)
-
---- a/drivers/mtd/Kconfig
-+++ b/drivers/mtd/Kconfig
-@@ -12,6 +12,25 @@ menuconfig MTD
- 
- if MTD
- 
-+menu "OpenWrt specific MTD options"
-+
-+config MTD_ROOTFS_ROOT_DEV
-+	bool "Automatically set 'rootfs' partition to be root filesystem"
-+	default y
-+
-+config MTD_SPLIT_FIRMWARE
-+	bool "Automatically split firmware partition for kernel+rootfs"
-+	default y
-+
-+config MTD_SPLIT_FIRMWARE_NAME
-+	string "Firmware partition name"
-+	depends on MTD_SPLIT_FIRMWARE
-+	default "firmware"
-+
-+source "drivers/mtd/mtdsplit/Kconfig"
-+
-+endmenu
-+
- config MTD_TESTS
- 	tristate "MTD tests support (DANGEROUS)"
- 	depends on m
---- a/drivers/mtd/mtdpart.c
-+++ b/drivers/mtd/mtdpart.c
-@@ -15,11 +15,13 @@
- #include <linux/kmod.h>
- #include <linux/mtd/mtd.h>
- #include <linux/mtd/partitions.h>
-+#include <linux/magic.h>
- #include <linux/err.h>
- #include <linux/of.h>
- #include <linux/of_platform.h>
- 
- #include "mtdcore.h"
-+#include "mtdsplit/mtdsplit.h"
- 
- /*
-  * MTD methods which simply translate the effective address and pass through
-@@ -237,6 +239,147 @@ static int mtd_add_partition_attrs(struc
- 	return ret;
- }
- 
-+static DEFINE_SPINLOCK(part_parser_lock);
-+static LIST_HEAD(part_parsers);
-+
-+static struct mtd_part_parser *mtd_part_parser_get(const char *name)
-+{
-+	struct mtd_part_parser *p, *ret = NULL;
-+
-+	spin_lock(&part_parser_lock);
-+
-+	list_for_each_entry(p, &part_parsers, list)
-+		if (!strcmp(p->name, name) && try_module_get(p->owner)) {
-+			ret = p;
-+			break;
-+		}
-+
-+	spin_unlock(&part_parser_lock);
-+
-+	return ret;
-+}
-+
-+static inline void mtd_part_parser_put(const struct mtd_part_parser *p)
-+{
-+	module_put(p->owner);
-+}
-+
-+static struct mtd_part_parser *
-+get_partition_parser_by_type(enum mtd_parser_type type,
-+			     struct mtd_part_parser *start)
-+{
-+	struct mtd_part_parser *p, *ret = NULL;
-+
-+	spin_lock(&part_parser_lock);
-+
-+	p = list_prepare_entry(start, &part_parsers, list);
-+	if (start)
-+		mtd_part_parser_put(start);
-+
-+	list_for_each_entry_continue(p, &part_parsers, list) {
-+		if (p->type == type && try_module_get(p->owner)) {
-+			ret = p;
-+			break;
-+		}
-+	}
-+
-+	spin_unlock(&part_parser_lock);
-+
-+	return ret;
-+}
-+
-+static int parse_mtd_partitions_by_type(struct mtd_info *master,
-+					enum mtd_parser_type type,
-+					const struct mtd_partition **pparts,
-+					struct mtd_part_parser_data *data)
-+{
-+	struct mtd_part_parser *prev = NULL;
-+	int ret = 0;
-+
-+	while (1) {
-+		struct mtd_part_parser *parser;
-+
-+		parser = get_partition_parser_by_type(type, prev);
-+		if (!parser)
-+			break;
-+
-+		ret = (*parser->parse_fn)(master, pparts, data);
-+
-+		if (ret > 0) {
-+			mtd_part_parser_put(parser);
-+			printk(KERN_NOTICE
-+			       "%d %s partitions found on MTD device %s\n",
-+			       ret, parser->name, master->name);
-+			break;
-+		}
-+
-+		prev = parser;
-+	}
-+
-+	return ret;
-+}
-+
-+static int
-+run_parsers_by_type(struct mtd_info *child, enum mtd_parser_type type)
-+{
-+	struct mtd_partition *parts;
-+	int nr_parts;
-+	int i;
-+
-+	nr_parts = parse_mtd_partitions_by_type(child, type, (const struct mtd_partition **)&parts,
-+						NULL);
-+	if (nr_parts <= 0)
-+		return nr_parts;
-+
-+	if (WARN_ON(!parts))
-+		return 0;
-+
-+	for (i = 0; i < nr_parts; i++) {
-+		/* adjust partition offsets */
-+		parts[i].offset += child->part.offset;
-+
-+		mtd_add_partition(child->parent,
-+				  parts[i].name,
-+				  parts[i].offset,
-+				  parts[i].size);
-+	}
-+
-+	kfree(parts);
-+
-+	return nr_parts;
-+}
-+
-+#ifdef CONFIG_MTD_SPLIT_FIRMWARE_NAME
-+#define SPLIT_FIRMWARE_NAME	CONFIG_MTD_SPLIT_FIRMWARE_NAME
-+#else
-+#define SPLIT_FIRMWARE_NAME	"unused"
-+#endif
-+
-+static void split_firmware(struct mtd_info *master, struct mtd_info *part)
-+{
-+	run_parsers_by_type(part, MTD_PARSER_TYPE_FIRMWARE);
-+}
-+
-+static void mtd_partition_split(struct mtd_info *master, struct mtd_info *part)
-+{
-+	static int rootfs_found = 0;
-+
-+	if (rootfs_found)
-+		return;
-+
-+	if (of_find_property(mtd_get_of_node(part), "linux,rootfs", NULL) ||
-+	    !strcmp(part->name, "rootfs")) {
-+		run_parsers_by_type(part, MTD_PARSER_TYPE_ROOTFS);
-+
-+		rootfs_found = 1;
-+	}
-+
-+	if (IS_ENABLED(CONFIG_MTD_SPLIT_FIRMWARE) &&
-+	    !strcmp(part->name, SPLIT_FIRMWARE_NAME) &&
-+	    !of_find_property(mtd_get_of_node(part), "compatible", NULL))
-+		split_firmware(master, part);
-+}
-+
- int mtd_add_partition(struct mtd_info *parent, const char *name,
- 		      long long offset, long long length)
- {
-@@ -275,6 +418,7 @@ int mtd_add_partition(struct mtd_info *p
- 	if (ret)
- 		goto err_remove_part;
- 
-+	mtd_partition_split(parent, child);
- 	mtd_add_partition_attrs(child);
- 
- 	return 0;
-@@ -423,6 +567,7 @@ int add_mtd_partitions(struct mtd_info *
- 			goto err_del_partitions;
- 		}
- 
-+		mtd_partition_split(master, child);
- 		mtd_add_partition_attrs(child);
- 
- 		/* Look for subpartitions */
-@@ -439,31 +584,6 @@ err_del_partitions:
- 	return ret;
- }
- 
--static DEFINE_SPINLOCK(part_parser_lock);
--static LIST_HEAD(part_parsers);
--
--static struct mtd_part_parser *mtd_part_parser_get(const char *name)
--{
--	struct mtd_part_parser *p, *ret = NULL;
--
--	spin_lock(&part_parser_lock);
--
--	list_for_each_entry(p, &part_parsers, list)
--		if (!strcmp(p->name, name) && try_module_get(p->owner)) {
--			ret = p;
--			break;
--		}
--
--	spin_unlock(&part_parser_lock);
--
--	return ret;
--}
--
--static inline void mtd_part_parser_put(const struct mtd_part_parser *p)
--{
--	module_put(p->owner);
--}
--
- /*
-  * Many partition parsers just expected the core to kfree() all their data in
-  * one chunk. Do that by default.
---- a/include/linux/mtd/partitions.h
-+++ b/include/linux/mtd/partitions.h
-@@ -75,6 +75,12 @@ struct mtd_part_parser_data {
-  * Functions dealing with the various ways of partitioning the space
-  */
- 
-+enum mtd_parser_type {
-+	MTD_PARSER_TYPE_DEVICE = 0,
-+	MTD_PARSER_TYPE_ROOTFS,
-+	MTD_PARSER_TYPE_FIRMWARE,
-+};
-+
- struct mtd_part_parser {
- 	struct list_head list;
- 	struct module *owner;
-@@ -83,6 +89,7 @@ struct mtd_part_parser {
- 	int (*parse_fn)(struct mtd_info *, const struct mtd_partition **,
- 			struct mtd_part_parser_data *);
- 	void (*cleanup)(const struct mtd_partition *pparts, int nr_parts);
-+	enum mtd_parser_type type;
- };
- 
- /* Container for passing around a set of parsed partitions */
---- a/drivers/mtd/Makefile
-+++ b/drivers/mtd/Makefile
-@@ -9,6 +9,8 @@ mtd-y				:= mtdcore.o mtdsuper.o mtdconc
- 
- obj-y				+= parsers/
- 
-+obj-$(CONFIG_MTD_SPLIT)		+= mtdsplit/
-+
- # 'Users' - code which presents functionality to userspace.
- obj-$(CONFIG_MTD_BLKDEVS)	+= mtd_blkdevs.o
- obj-$(CONFIG_MTD_BLOCK)		+= mtdblock.o
---- a/include/linux/mtd/mtd.h
-+++ b/include/linux/mtd/mtd.h
-@@ -606,6 +606,24 @@ static inline void mtd_align_erase_req(s
- 		req->len += mtd->erasesize - mod;
- }
- 
-+static inline uint64_t mtd_roundup_to_eb(uint64_t sz, struct mtd_info *mtd)
-+{
-+	if (mtd_mod_by_eb(sz, mtd) == 0)
-+		return sz;
-+
-+	/* Round up to next erase block */
-+	return (mtd_div_by_eb(sz, mtd) + 1) * mtd->erasesize;
-+}
-+
-+static inline uint64_t mtd_rounddown_to_eb(uint64_t sz, struct mtd_info *mtd)
-+{
-+	if (mtd_mod_by_eb(sz, mtd) == 0)
-+		return sz;
-+
-+	/* Round down to the start of the current erase block */
-+	return (mtd_div_by_eb(sz, mtd)) * mtd->erasesize;
-+}
-+
- static inline uint32_t mtd_div_by_ws(uint64_t sz, struct mtd_info *mtd)
- {
- 	if (mtd->writesize_shift)
-@@ -679,6 +697,13 @@ extern struct mtd_info *of_get_mtd_devic
- extern struct mtd_info *get_mtd_device_nm(const char *name);
- extern void put_mtd_device(struct mtd_info *mtd);
- 
-+static inline uint64_t mtdpart_get_offset(const struct mtd_info *mtd)
-+{
-+	if (!mtd_is_partition(mtd))
-+		return 0;
-+
-+	return mtd->part.offset;
-+}
- 
- struct mtd_notifier {
- 	void (*add)(struct mtd_info *mtd);