diff options
Diffstat (limited to 'arch/arm/plat-s3c/init.c')
| -rw-r--r-- | arch/arm/plat-s3c/init.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c/init.c b/arch/arm/plat-s3c/init.c index 6790edfaca6..f63ff9c86c3 100644 --- a/arch/arm/plat-s3c/init.c +++ b/arch/arm/plat-s3c/init.c @@ -31,6 +31,31 @@ static struct cpu_table *cpu; +static void __init set_system_rev(unsigned int idcode) +{ + /* + * system_rev encoding is as follows + * system_rev & 0xff000000 -> S3C Class (24xx/64xx) + * system_rev & 0xfff00000 -> S3C Sub Class (241x/244x) + * system_rev & 0xffff0000 -> S3C Type (2410/2440/6400/6410) + * + * Remains[15:0] are reserved + * + * Exception: + * Store Revision A to 1 such as + * s3c2410A to s3c2411 + * s3c2440A to s3c2441 + */ + system_rev = (idcode & 0x0ffff000) << 4; + + if (idcode == 0x32410002 || idcode == 0x32440001) + system_rev |= (0x1 << 16); + if (idcode == 0x32440aaa) /* s3c2442 */ + system_rev |= (0x2 << 16); + if (idcode == 0x0) /* s3c2400 */ + system_rev |= (0x2400 << 16); +} + static struct cpu_table * __init s3c_lookup_cpu(unsigned long idcode, struct cpu_table *tab, unsigned int count) @@ -53,6 +78,8 @@ void __init s3c_init_cpu(unsigned long idcode, panic("Unknown S3C24XX CPU"); } + set_system_rev(idcode); + printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode); if (cpu->map_io == NULL || cpu->init == NULL) { |