ARM: SAMSUNG: Add support for detecting CPU at runtime

The soc_is_[name]() can be used to distinguish cpu at runtime.

This patch was originally from Changhwan Youn <chaos.youn@samsung.com>

Acked-by: Changhwan Youn <chaos.youn@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

1 files changed, 12 insertions, 14 deletions

diff --git a/arch/arm/plat-s5p/cpu.c b/arch/arm/plat-s5p/cpu.c
index bbc2aa7449ca..3ef673482111 100644
--- a/arch/arm/plat-s5p/cpu.c
+++ b/arch/arm/plat-s5p/cpu.c
@@ -36,40 +36,40 @@ static const char name_exynos4210[] = "EXYNOS4210";
 
 static struct cpu_table cpu_ids[] __initdata = {
         {
-                .idcode         = 0x56440100,
-                .idmask         = 0xfffff000,
+                .idcode         = S5P6440_CPU_ID,
+                .idmask         = S5P64XX_CPU_MASK,
                 .map_io         = s5p6440_map_io,
                 .init_clocks    = s5p6440_init_clocks,
                 .init_uarts     = s5p6440_init_uarts,
                 .init           = s5p64x0_init,
                 .name           = name_s5p6440,
         }, {
-                .idcode         = 0x36450000,
-                .idmask         = 0xfffff000,
+                .idcode         = S5P6450_CPU_ID,
+                .idmask         = S5P64XX_CPU_MASK,
                 .map_io         = s5p6450_map_io,
                 .init_clocks    = s5p6450_init_clocks,
                 .init_uarts     = s5p6450_init_uarts,
                 .init           = s5p64x0_init,
                 .name           = name_s5p6450,
         }, {
-                .idcode         = 0x43100000,
-                .idmask         = 0xfffff000,
+                .idcode         = S5PC100_CPU_ID,
+                .idmask         = S5PC100_CPU_MASK,
                 .map_io         = s5pc100_map_io,
                 .init_clocks    = s5pc100_init_clocks,
                 .init_uarts     = s5pc100_init_uarts,
                 .init           = s5pc100_init,
                 .name           = name_s5pc100,
         }, {
-                .idcode         = 0x43110000,
-                .idmask         = 0xfffff000,
+                .idcode         = S5PV210_CPU_ID,
+                .idmask         = S5PV210_CPU_MASK,
                 .map_io         = s5pv210_map_io,
                 .init_clocks    = s5pv210_init_clocks,
                 .init_uarts     = s5pv210_init_uarts,
                 .init           = s5pv210_init,
                 .name           = name_s5pv210,
         }, {
-                .idcode         = 0x43210000,
-                .idmask         = 0xfffe0000,
+                .idcode         = EXYNOS4210_CPU_ID,
+                .idmask         = EXYNOS4_CPU_MASK,
                 .map_io         = exynos4_map_io,
                 .init_clocks    = exynos4_init_clocks,
                 .init_uarts     = exynos4_init_uarts,
@@ -114,13 +114,11 @@ static struct map_desc s5p_iodesc[] __initdata = {
 void __init s5p_init_io(struct map_desc *mach_desc,
                         int size, void __iomem *cpuid_addr)
 {
-        unsigned long idcode;
-
         /* initialize the io descriptors we need for initialization */
         iotable_init(s5p_iodesc, ARRAY_SIZE(s5p_iodesc));
         if (mach_desc)
                 iotable_init(mach_desc, size);
 
-        idcode = __raw_readl(cpuid_addr);
-        s3c_init_cpu(idcode, cpu_ids, ARRAY_SIZE(cpu_ids));
+        samsung_cpu_id = __raw_readl(cpuid_addr);
+        s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids));
 }