From 56b209227a87b718450e917df904e627ddfca146 Mon Sep 17 00:00:00 2001 From: Kukjin Kim Date: Sat, 20 Aug 2011 13:41:21 +0900 Subject: [PATCH] ARM: EXYNOS4: Use samsung_rev() to distinguish silicon revision This patch uses samsung_rev() to support variable silicon revision of EXYNOS4210 so that can support for EXYNOS4210 REV0, REV1.0 and REV1.1. Note: Need to change timer setting on REV0. Acked-by: Changhwan Youn Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos4/cpu.c | 28 +++++++++++++++++++----- arch/arm/mach-exynos4/include/mach/map.h | 3 ++- arch/arm/mach-exynos4/platsmp.c | 8 +++++-- arch/arm/plat-samsung/include/plat/cpu.h | 6 +++++ 4 files changed, 37 insertions(+), 8 deletions(-) diff --git a/arch/arm/mach-exynos4/cpu.c b/arch/arm/mach-exynos4/cpu.c index 2d8a40c9e6e5..dbc358d75547 100644 --- a/arch/arm/mach-exynos4/cpu.c +++ b/arch/arm/mach-exynos4/cpu.c @@ -42,11 +42,6 @@ static struct map_desc exynos4_iodesc[] __initdata = { .pfn = __phys_to_pfn(EXYNOS4_PA_SYSTIMER), .length = SZ_4K, .type = MT_DEVICE, - }, { - .virtual = (unsigned long)S5P_VA_SYSRAM, - .pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM), - .length = SZ_4K, - .type = MT_DEVICE, }, { .virtual = (unsigned long)S5P_VA_CMU, .pfn = __phys_to_pfn(EXYNOS4_PA_CMU), @@ -120,6 +115,24 @@ static struct map_desc exynos4_iodesc[] __initdata = { }, }; +static struct map_desc exynos4_iodesc0[] __initdata = { + { + .virtual = (unsigned long)S5P_VA_SYSRAM, + .pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM0), + .length = SZ_4K, + .type = MT_DEVICE, + }, +}; + +static struct map_desc exynos4_iodesc1[] __initdata = { + { + .virtual = (unsigned long)S5P_VA_SYSRAM, + .pfn = __phys_to_pfn(EXYNOS4_PA_SYSRAM1), + .length = SZ_4K, + .type = MT_DEVICE, + }, +}; + static void exynos4_idle(void) { if (!need_resched()) @@ -137,6 +150,11 @@ void __init exynos4_map_io(void) { iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc)); + if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0) + iotable_init(exynos4_iodesc0, ARRAY_SIZE(exynos4_iodesc0)); + else + iotable_init(exynos4_iodesc1, ARRAY_SIZE(exynos4_iodesc1)); + /* initialize device information early */ exynos4_default_sdhci0(); exynos4_default_sdhci1(); diff --git a/arch/arm/mach-exynos4/include/mach/map.h b/arch/arm/mach-exynos4/include/mach/map.h index d32296dc65e2..7073ac730855 100644 --- a/arch/arm/mach-exynos4/include/mach/map.h +++ b/arch/arm/mach-exynos4/include/mach/map.h @@ -23,7 +23,8 @@ #include -#define EXYNOS4_PA_SYSRAM 0x02020000 +#define EXYNOS4_PA_SYSRAM0 0x02025000 +#define EXYNOS4_PA_SYSRAM1 0x02020000 #define EXYNOS4_PA_FIMC0 0x11800000 #define EXYNOS4_PA_FIMC1 0x11810000 diff --git a/arch/arm/mach-exynos4/platsmp.c b/arch/arm/mach-exynos4/platsmp.c index 7c2282c6ba81..96cc6513b128 100644 --- a/arch/arm/mach-exynos4/platsmp.c +++ b/arch/arm/mach-exynos4/platsmp.c @@ -30,9 +30,12 @@ #include #include +#include + extern void exynos4_secondary_startup(void); -#define CPU1_BOOT_REG S5P_VA_SYSRAM +#define CPU1_BOOT_REG (samsung_rev() == EXYNOS4210_REV_1_1 ? \ + S5P_INFORM5 : S5P_VA_SYSRAM) /* * control for which core is the next to come out of the secondary @@ -216,5 +219,6 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus) * until it receives a soft interrupt, and then the * secondary CPU branches to this address. */ - __raw_writel(BSYM(virt_to_phys(exynos4_secondary_startup)), S5P_VA_SYSRAM); + __raw_writel(BSYM(virt_to_phys(exynos4_secondary_startup)), + CPU1_BOOT_REG); } diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h index c22d110a1965..6fdd5ef5e7b1 100644 --- a/arch/arm/plat-samsung/include/plat/cpu.h +++ b/arch/arm/plat-samsung/include/plat/cpu.h @@ -100,6 +100,10 @@ IS_SAMSUNG_CPU(exynos4210, EXYNOS4210_CPU_ID, EXYNOS4_CPU_MASK) # define soc_is_exynos4210() 0 #endif +#define EXYNOS4210_REV_0 (0x0) +#define EXYNOS4210_REV_1_0 (0x10) +#define EXYNOS4210_REV_1_1 (0x11) + #define IODESC_ENT(x) { (unsigned long)S3C24XX_VA_##x, __phys_to_pfn(S3C24XX_PA_##x), S3C24XX_SZ_##x, MT_DEVICE } #ifndef MHZ @@ -144,6 +148,8 @@ extern void s3c24xx_init_cpu(void); extern void s3c64xx_init_cpu(void); extern void s5p_init_cpu(void __iomem *cpuid_addr); +extern unsigned int samsung_rev(void); + extern void s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no); extern void s3c24xx_init_clocks(int xtal); -- 2.39.5