diff options
Diffstat (limited to 'arch/arm/plat-s3c64xx/cpu.c')
| -rw-r--r-- | arch/arm/plat-s3c64xx/cpu.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c64xx/cpu.c b/arch/arm/plat-s3c64xx/cpu.c index 91f49a3a665d..b1fdd83940a6 100644 --- a/arch/arm/plat-s3c64xx/cpu.c +++ b/arch/arm/plat-s3c64xx/cpu.c @@ -16,6 +16,7 @@ #include <linux/module.h> #include <linux/interrupt.h> #include <linux/ioport.h> +#include <linux/sysdev.h> #include <linux/serial_core.h> #include <linux/platform_device.h> #include <linux/io.h> @@ -101,9 +102,24 @@ static struct map_desc s3c_iodesc[] __initdata = { .pfn = __phys_to_pfn(S3C64XX_PA_MODEM), .length = SZ_4K, .type = MT_DEVICE, + }, { + .virtual = (unsigned long)S3C_VA_WATCHDOG, + .pfn = __phys_to_pfn(S3C64XX_PA_WATCHDOG), + .length = SZ_4K, + .type = MT_DEVICE, }, }; + +struct sysdev_class s3c64xx_sysclass = { + .name = "s3c64xx-core", +}; + +static struct sys_device s3c64xx_sysdev = { + .cls = &s3c64xx_sysclass, +}; + + /* read cpu identification code */ void __init s3c64xx_init_io(struct map_desc *mach_desc, int size) @@ -115,5 +131,21 @@ void __init s3c64xx_init_io(struct map_desc *mach_desc, int size) iotable_init(mach_desc, size); idcode = __raw_readl(S3C_VA_SYS + 0x118); + if (!idcode) { + /* 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); + idcode = __raw_readl(S3C_VA_SYS + 0xA1C); + } + s3c_init_cpu(idcode, cpu_ids, ARRAY_SIZE(cpu_ids)); } + +static __init int s3c64xx_sysdev_init(void) +{ + sysdev_class_register(&s3c64xx_sysclass); + return sysdev_register(&s3c64xx_sysdev); +} + +core_initcall(s3c64xx_sysdev_init); |