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>
diff --git a/arch/arm/plat-s5p/cpu.c b/arch/arm/plat-s5p/cpu.c
index bbc2aa7..3ef6734 100644
--- a/arch/arm/plat-s5p/cpu.c
+++ b/arch/arm/plat-s5p/cpu.c
@@ -36,40 +36,40 @@
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 @@
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));
}