ARM: S5PV210: Add board file for boot using Device Tree

This patch adds board file that will be used to boot S5PV210/S5PC110-based
boards using Device Tree.

Signed-off-by: Mateusz Krawczuk <m.krawczuk@partner.samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[t.figa: Rebased and cleaned-up a bit.]
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 68 insertions, 0 deletions

diff --git a/arch/arm/mach-s5pv210/s5pv210.c b/arch/arm/mach-s5pv210/s5pv210.c
new file mode 100644
index 000000000000..c244ccb6b236
--- /dev/null
+++ b/arch/arm/mach-s5pv210/s5pv210.c
@@ -0,0 +1,68 @@
+/*
+ * Samsung's S5PC110/S5PV210 flattened device tree enabled machine.
+ *
+ * Copyright (c) 2013-2014 Samsung Electronics Co., Ltd.
+ * Mateusz Krawczuk <m.krawczuk@partner.samsung.com>
+ * Tomasz Figa <t.figa@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/of_fdt.h>
+#include <linux/of_platform.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/system_misc.h>
+
+#include <plat/map-base.h>
+#include <mach/regs-clock.h>
+
+static int __init s5pv210_fdt_map_sys(unsigned long node, const char *uname,
+					int depth, void *data)
+{
+	struct map_desc iodesc;
+	const __be32 *reg;
+	int len;
+
+	if (!of_flat_dt_is_compatible(node, "samsung,s5pv210-clock"))
+		return 0;
+
+	reg = of_get_flat_dt_prop(node, "reg", &len);
+	if (reg == NULL || len != (sizeof(unsigned long) * 2))
+		return 0;
+
+	iodesc.pfn = __phys_to_pfn(be32_to_cpu(reg[0]));
+	iodesc.length = be32_to_cpu(reg[1]) - 1;
+	iodesc.virtual = (unsigned long)S3C_VA_SYS;
+	iodesc.type = MT_DEVICE;
+	iotable_init(&iodesc, 1);
+
+	return 1;
+}
+
+static void __init s5pv210_dt_map_io(void)
+{
+	debug_ll_io_init();
+
+	of_scan_flat_dt(s5pv210_fdt_map_sys, NULL);
+}
+
+static void s5pv210_dt_restart(enum reboot_mode mode, const char *cmd)
+{
+	__raw_writel(0x1, S5P_SWRESET);
+}
+
+static char const *s5pv210_dt_compat[] __initconst = {
+	"samsung,s5pc110",
+	"samsung,s5pv210",
+	NULL
+};
+
+DT_MACHINE_START(S5PV210_DT, "Samsung S5PC110/S5PV210-based board")
+	.dt_compat = s5pv210_dt_compat,
+	.map_io = s5pv210_dt_map_io,
+	.restart = s5pv210_dt_restart,
+MACHINE_END