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| author | Ben Dooks <ben-linux@fluff.org> | 2009-03-24 17:31:42 +0000 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2009-05-07 11:04:57 +0100 |
| commit | e074f9803227236252c8e7be16d836d709abff57 (patch) | |
| tree | 0d677cd105a4275752f99d8b95b0e3d5c88ab9dc | |
| parent | a6925c1c515513e22b0419e1a41155c88d22b1f4 (diff) | |
| download | linux-e074f9803227236252c8e7be16d836d709abff57.tar.gz linux-e074f9803227236252c8e7be16d836d709abff57.tar.bz2 linux-e074f9803227236252c8e7be16d836d709abff57.zip | |
[ARM] S3C64XX: Add S3C6400 CPU detection.
Add detection support for the S3C6400 SoC which has it's
id register in a different place to the S3C6410.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
| -rw-r--r-- | arch/arm/plat-s3c64xx/cpu.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c64xx/cpu.c b/arch/arm/plat-s3c64xx/cpu.c index f9fdaab32ab4..19f68b5f0d36 100644 --- a/arch/arm/plat-s3c64xx/cpu.c +++ b/arch/arm/plat-s3c64xx/cpu.c @@ -126,6 +126,14 @@ 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)); } |