diff options
| -rw-r--r-- | arch/arm/mach-s3c64xx/cpu.c | 10 | ||||
| -rw-r--r-- | arch/arm/plat-s3c24xx/cpu.c | 1 | ||||
| -rw-r--r-- | arch/arm/plat-s5p/cpu.c | 4 | ||||
| -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 | 4 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/init.c | 1 |
7 files changed, 69 insertions, 11 deletions
diff --git a/arch/arm/mach-s3c64xx/cpu.c b/arch/arm/mach-s3c64xx/cpu.c index 7b665f3e2e1f..6c498f9a18c5 100644 --- a/arch/arm/mach-s3c64xx/cpu.c +++ b/arch/arm/mach-s3c64xx/cpu.c @@ -144,14 +144,8 @@ void __init s3c64xx_init_io(struct map_desc *mach_desc, int size) iotable_init(s3c_iodesc, ARRAY_SIZE(s3c_iodesc)); iotable_init(mach_desc, size); - 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); - } + /* detect cpu id */ + s3c64xx_init_cpu(); s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids)); } diff --git a/arch/arm/plat-s3c24xx/cpu.c b/arch/arm/plat-s3c24xx/cpu.c index ead21a4a7f8a..3c6335307fb1 100644 --- a/arch/arm/plat-s3c24xx/cpu.c +++ b/arch/arm/plat-s3c24xx/cpu.c @@ -224,6 +224,7 @@ void __init s3c24xx_init_io(struct map_desc *mach_desc, int size) } else { samsung_cpu_id = s3c24xx_read_idcode_v4(); } + s3c24xx_init_cpu(); arm_pm_restart = s3c24xx_pm_restart; diff --git a/arch/arm/plat-s5p/cpu.c b/arch/arm/plat-s5p/cpu.c index 3ef673482111..04392c70d055 100644 --- a/arch/arm/plat-s5p/cpu.c +++ b/arch/arm/plat-s5p/cpu.c @@ -119,6 +119,8 @@ void __init s5p_init_io(struct map_desc *mach_desc, if (mach_desc) iotable_init(mach_desc, size); - samsung_cpu_id = __raw_readl(cpuid_addr); + /* detect cpu id and rev. */ + s5p_init_cpu(cpuid_addr); + s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids)); } diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile index 853764ba8cc5..3de756da5eaa 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 000000000000..81c06d44c11e --- /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 bdf43ad3b5ec..c22d110a1965 100644 --- a/arch/arm/plat-samsung/include/plat/cpu.h +++ b/arch/arm/plat-samsung/include/plat/cpu.h @@ -140,6 +140,10 @@ 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 void s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no); extern void s3c24xx_init_clocks(int xtal); diff --git a/arch/arm/plat-samsung/init.c b/arch/arm/plat-samsung/init.c index 40b1228adb88..79d10fca9090 100644 --- a/arch/arm/plat-samsung/init.c +++ b/arch/arm/plat-samsung/init.c @@ -30,7 +30,6 @@ #include <plat/regs-serial.h> static struct cpu_table *cpu; -unsigned long samsung_cpu_id; static struct cpu_table * __init s3c_lookup_cpu(unsigned long idcode, struct cpu_table *tab, |