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, 3 insertions, 5 deletions

diff --git a/arch/arm/plat-s3c24xx/cpu.c b/arch/arm/plat-s3c24xx/cpu.c
index c1fc6c6fac72..ead21a4a7f8a 100644
--- a/arch/arm/plat-s3c24xx/cpu.c
+++ b/arch/arm/plat-s3c24xx/cpu.c
@@ -215,19 +215,17 @@ static void s3c24xx_pm_restart(char mode, const char *cmd)
 
 void __init s3c24xx_init_io(struct map_desc *mach_desc, int size)
 {
-        unsigned long idcode = 0x0;
-
         /* initialise the io descriptors we need for initialisation */
         iotable_init(mach_desc, size);
         iotable_init(s3c_iodesc, ARRAY_SIZE(s3c_iodesc));
 
         if (cpu_architecture() >= CPU_ARCH_ARMv5) {
-                idcode = s3c24xx_read_idcode_v5();
+                samsung_cpu_id = s3c24xx_read_idcode_v5();
         } else {
-                idcode = s3c24xx_read_idcode_v4();
+                samsung_cpu_id = s3c24xx_read_idcode_v4();
         }
 
         arm_pm_restart = s3c24xx_pm_restart;
 
-        s3c_init_cpu(idcode, cpu_ids, ARRAY_SIZE(cpu_ids));
+        s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids));
 }