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author | Kukjin Kim <kgene.kim@samsung.com> | 2011-10-04 20:14:11 +0900 |
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committer | Kukjin Kim <kgene.kim@samsung.com> | 2011-10-04 20:14:11 +0900 |
commit | c9477f38cba225870862fd9e08868ae3d4abdfe0 (patch) | |
tree | 01c7575a1e8e3197d072890f48944f1232a885c6 /arch/arm/plat-samsung | |
parent | c37b25046289e857918d25fd96aa441ea7929ad5 (diff) | |
parent | 2520123382e97271e932377c83bca010c265be55 (diff) | |
download | op-kernel-dev-c9477f38cba225870862fd9e08868ae3d4abdfe0.zip op-kernel-dev-c9477f38cba225870862fd9e08868ae3d4abdfe0.tar.gz |
Merge branch 'next-samsung-board' into next-samsung-devel-2
Diffstat (limited to 'arch/arm/plat-samsung')
-rw-r--r-- | arch/arm/plat-samsung/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/plat-samsung/cpu.c | 58 | ||||
-rw-r--r-- | arch/arm/plat-samsung/include/plat/cpu.h | 105 |
3 files changed, 163 insertions, 2 deletions
diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile index 853764b..3de756d 100644 --- a/arch/arm/plat-samsung/Makefile +++ b/arch/arm/plat-samsung/Makefile @@ -11,7 +11,7 @@ obj- := # Objects we always build independent of SoC choice -obj-y += init.o +obj-y += init.o cpu.o obj-$(CONFIG_ARCH_USES_GETTIMEOFFSET) += time.o obj-y += clock.o obj-y += pwm-clock.o diff --git a/arch/arm/plat-samsung/cpu.c b/arch/arm/plat-samsung/cpu.c new file mode 100644 index 0000000..81c06d4 --- /dev/null +++ b/arch/arm/plat-samsung/cpu.c @@ -0,0 +1,58 @@ +/* linux/arch/arm/plat-samsung/cpu.c + * + * Copyright (c) 2009-2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Samsung CPU Support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> + +#include <asm/system.h> + +#include <mach/map.h> +#include <plat/cpu.h> + +unsigned long samsung_cpu_id; +static unsigned int samsung_cpu_rev; + +unsigned int samsung_rev(void) +{ + return samsung_cpu_rev; +} +EXPORT_SYMBOL(samsung_rev); + +void __init s3c24xx_init_cpu(void) +{ + /* nothing here yet */ + + samsung_cpu_rev = 0; +} + +void __init s3c64xx_init_cpu(void) +{ + 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); + } + + samsung_cpu_rev = 0; +} + +void __init s5p_init_cpu(void __iomem *cpuid_addr) +{ + samsung_cpu_id = __raw_readl(cpuid_addr); + samsung_cpu_rev = samsung_cpu_id & 0xFF; +} diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h index c0a5741..1bbbbb4 100644 --- a/arch/arm/plat-samsung/include/plat/cpu.h +++ b/arch/arm/plat-samsung/include/plat/cpu.h @@ -1,9 +1,12 @@ /* linux/arch/arm/plat-samsung/include/plat/cpu.h * + * Copyright (c) 2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * * Copyright (c) 2004-2005 Simtec Electronics * Ben Dooks <ben@simtec.co.uk> * - * Header file for S3C24XX CPU support + * Header file for Samsung CPU support * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -15,6 +18,100 @@ #ifndef __SAMSUNG_PLAT_CPU_H #define __SAMSUNG_PLAT_CPU_H +extern unsigned long samsung_cpu_id; + +#define S3C24XX_CPU_ID 0x32400000 +#define S3C24XX_CPU_MASK 0xFFF00000 + +#define S3C6400_CPU_ID 0x36400000 +#define S3C6410_CPU_ID 0x36410000 +#define S3C64XX_CPU_ID (S3C6400_CPU_ID & S3C6410_CPU_ID) +#define S3C64XX_CPU_MASK 0xFFFFF000 + +#define S5P6440_CPU_ID 0x56440000 +#define S5P6450_CPU_ID 0x36450000 +#define S5P64XX_CPU_MASK 0xFFFFF000 + +#define S5PC100_CPU_ID 0x43100000 +#define S5PC100_CPU_MASK 0xFFFFF000 + +#define S5PV210_CPU_ID 0x43110000 +#define S5PV210_CPU_MASK 0xFFFFF000 + +#define EXYNOS4210_CPU_ID 0x43210000 +#define EXYNOS4212_CPU_ID 0x43220000 +#define EXYNOS4_CPU_MASK 0xFFFE0000 + +#define IS_SAMSUNG_CPU(name, id, mask) \ +static inline int is_samsung_##name(void) \ +{ \ + return ((samsung_cpu_id & mask) == (id & mask)); \ +} + +IS_SAMSUNG_CPU(s3c24xx, S3C24XX_CPU_ID, S3C24XX_CPU_MASK) +IS_SAMSUNG_CPU(s3c64xx, S3C64XX_CPU_ID, S3C64XX_CPU_MASK) +IS_SAMSUNG_CPU(s5p6440, S5P6440_CPU_ID, S5P64XX_CPU_MASK) +IS_SAMSUNG_CPU(s5p6450, S5P6450_CPU_ID, S5P64XX_CPU_MASK) +IS_SAMSUNG_CPU(s5pc100, S5PC100_CPU_ID, S5PC100_CPU_MASK) +IS_SAMSUNG_CPU(s5pv210, S5PV210_CPU_ID, S5PV210_CPU_MASK) +IS_SAMSUNG_CPU(exynos4210, EXYNOS4210_CPU_ID, EXYNOS4_CPU_MASK) +IS_SAMSUNG_CPU(exynos4212, EXYNOS4212_CPU_ID, EXYNOS4_CPU_MASK) + +#if defined(CONFIG_CPU_S3C2410) || defined(CONFIG_CPU_S3C2412) || \ + defined(CONFIG_CPU_S3C2416) || defined(CONFIG_CPU_S3C2440) || \ + defined(CONFIG_CPU_S3C2442) || defined(CONFIG_CPU_S3C244X) || \ + defined(CONFIG_CPU_S3C2443) +# define soc_is_s3c24xx() is_samsung_s3c24xx() +#else +# define soc_is_s3c24xx() 0 +#endif + +#if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410) +# define soc_is_s3c64xx() is_samsung_s3c64xx() +#else +# define soc_is_s3c64xx() 0 +#endif + +#if defined(CONFIG_CPU_S5P6440) +# define soc_is_s5p6440() is_samsung_s5p6440() +#else +# define soc_is_s5p6440() 0 +#endif + +#if defined(CONFIG_CPU_S5P6450) +# define soc_is_s5p6450() is_samsung_s5p6450() +#else +# define soc_is_s5p6450() 0 +#endif + +#if defined(CONFIG_CPU_S5PC100) +# define soc_is_s5pc100() is_samsung_s5pc100() +#else +# define soc_is_s5pc100() 0 +#endif + +#if defined(CONFIG_CPU_S5PV210) +# define soc_is_s5pv210() is_samsung_s5pv210() +#else +# define soc_is_s5pv210() 0 +#endif + +#if defined(CONFIG_CPU_EXYNOS4210) +# define soc_is_exynos4210() is_samsung_exynos4210() +#else +# define soc_is_exynos4210() 0 +#endif + +#if defined(CONFIG_SOC_EXYNOS4212) +# define soc_is_exynos4212() is_samsung_exynos4212() +#else +# define soc_is_exynos4212() 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 @@ -55,6 +152,12 @@ extern void s3c64xx_init_io(struct map_desc *mach_desc, int size); extern void s5p_init_io(struct map_desc *mach_desc, int size, void __iomem *cpuid_addr); +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); |