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| author | Kukjin Kim | 2011-08-19 19:18:18 +0200 |
|---|---|---|
| committer | Kukjin Kim | 2011-08-22 00:14:07 +0200 |
| commit | c06af3cc6a27991187fd513765fed943684d41bf (patch) | |
| tree | 1bdcaab50fd7ba121218c8ee23f19df9caaf149b /arch/arm/plat-samsung/include/plat/cpu.h | |
| parent | Linux 3.1-rc2 (diff) | |
| download | kernel-qcow2-linux-c06af3cc6a27991187fd513765fed943684d41bf.tar.gz kernel-qcow2-linux-c06af3cc6a27991187fd513765fed943684d41bf.tar.xz kernel-qcow2-linux-c06af3cc6a27991187fd513765fed943684d41bf.zip | |
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>
Diffstat (limited to 'arch/arm/plat-samsung/include/plat/cpu.h')
| -rw-r--r-- | arch/arm/plat-samsung/include/plat/cpu.h | 87 |
1 files changed, 86 insertions, 1 deletions
diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h index c0a5741b23e6..bdf43ad3b5ec 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 +18,88 @@ #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 0x1FF40000 + +#define S5P6440_CPU_ID 0x56440000 +#define S5P6450_CPU_ID 0x36450000 +#define S5P64XX_CPU_MASK 0x1FF40000 + +#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 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) + +#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 + #define IODESC_ENT(x) { (unsigned long)S3C24XX_VA_##x, __phys_to_pfn(S3C24XX_PA_##x), S3C24XX_SZ_##x, MT_DEVICE } #ifndef MHZ |