ARM: SAMSUNG: Add support for handling of cpu revision

This patch adds plat-samsung/cpu.c for detecting of cpu id and
silicon revision.

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, 2 insertions, 8 deletions

diff --git a/arch/arm/mach-s3c64xx/cpu.c b/arch/arm/mach-s3c64xx/cpu.c
index 7b665f3e2e1f..6c498f9a18c5 100644
--- a/arch/arm/mach-s3c64xx/cpu.c
+++ b/arch/arm/mach-s3c64xx/cpu.c
@@ -144,14 +144,8 @@ void __init s3c64xx_init_io(struct map_desc *mach_desc, int size)
         iotable_init(s3c_iodesc, ARRAY_SIZE(s3c_iodesc));
         iotable_init(mach_desc, size);
 
-        samsung_cpu_id = __raw_readl(S3C_VA_SYS + 0x118);
-        if (!samsung_cpu_id) {
-                /* S3C6400 has the ID register in a different place,
-                 * and needs a write before it can be read. */
-
-                __raw_writel(0x0, S3C_VA_SYS + 0xA1C);
-                samsung_cpu_id = __raw_readl(S3C_VA_SYS + 0xA1C);
-        }
+        /* detect cpu id */
+        s3c64xx_init_cpu();
 
         s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids));
 }