[U-Boot] S5PC2XX: Support the cpu revision
Minkyu Kang
mk7.kang at samsung.com
Mon May 16 12:59:53 CEST 2011
S5PC210 SoC have two cpu revisions, and have some difference.
So, support the cpu revision for each revision.
Signed-off-by: Minkyu Kang <mk7.kang at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
arch/arm/cpu/armv7/s5p-common/cpu_info.c | 2 ++
arch/arm/include/asm/arch-s5pc2xx/cpu.h | 12 +++++++++++-
2 files changed, 13 insertions(+), 1 deletions(-)
diff --git a/arch/arm/cpu/armv7/s5p-common/cpu_info.c b/arch/arm/cpu/armv7/s5p-common/cpu_info.c
index c8a543a..527f32d 100644
--- a/arch/arm/cpu/armv7/s5p-common/cpu_info.c
+++ b/arch/arm/cpu/armv7/s5p-common/cpu_info.c
@@ -26,6 +26,8 @@
/* Default is s5pc100 */
unsigned int s5p_cpu_id = 0xC100;
+/* Default is EVT1 */
+unsigned int s5p_cpu_rev = 1;
#ifdef CONFIG_ARCH_CPU_INIT
int arch_cpu_init(void)
diff --git a/arch/arm/include/asm/arch-s5pc2xx/cpu.h b/arch/arm/include/asm/arch-s5pc2xx/cpu.h
index d56ee80..f9015c7 100644
--- a/arch/arm/include/asm/arch-s5pc2xx/cpu.h
+++ b/arch/arm/include/asm/arch-s5pc2xx/cpu.h
@@ -51,6 +51,12 @@
#include <asm/io.h>
/* CPU detection macros */
extern unsigned int s5p_cpu_id;
+extern unsigned int s5p_cpu_rev;
+
+static inline int s5p_get_cpu_rev(void)
+{
+ return s5p_cpu_rev;
+}
static inline void s5p_set_cpu_id(void)
{
@@ -61,8 +67,12 @@ static inline void s5p_set_cpu_id(void)
* 0xC200: S5PC210 EVT0
* 0xC210: S5PC210 EVT1
*/
- if (s5p_cpu_id == 0xC200)
+ if (s5p_cpu_id == 0xC200) {
s5p_cpu_id |= 0x10;
+ s5p_cpu_rev = 0;
+ } else if (s5p_cpu_id == 0xC210) {
+ s5p_cpu_rev = 1;
+ }
}
#define IS_SAMSUNG_TYPE(type, id) \
--
1.7.4.1
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