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| author | Ralf Baechle <ralf@linux-mips.org> | 2007-07-06 14:40:05 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-07-06 16:17:11 +0100 |
| commit | fde97822a295da9dffa4af643b49a58ffc4516ad (patch) | |
| tree | f9e10d270a8616ad092d9cdeddf20bb8e7c29b14 | |
| parent | 075c733e19ce7530b53b78151cc4d303c8f64548 (diff) | |
| download | linux-stable-fde97822a295da9dffa4af643b49a58ffc4516ad.tar.gz linux-stable-fde97822a295da9dffa4af643b49a58ffc4516ad.tar.bz2 linux-stable-fde97822a295da9dffa4af643b49a58ffc4516ad.zip | |
[MIPS] Add macros to encode processor revisions.
Older processors used to encode processor version and revision in two
4-bit bitfields, the 4K seems to simply count up and even newer MTI cores
have switched to use the 8-bits as 3:3:2 bitfield with the last field as
the patch number.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | include/asm-mips/cpu.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/asm-mips/cpu.h b/include/asm-mips/cpu.h index d38fdbf845b2..2924069075e0 100644 --- a/include/asm-mips/cpu.h +++ b/include/asm-mips/cpu.h @@ -125,6 +125,17 @@ #define PRID_REV_VR4130 0x0080 /* + * Older processors used to encode processor version and revision in two + * 4-bit bitfields, the 4K seems to simply count up and even newer MTI cores + * have switched to use the 8-bits as 3:3:2 bitfield with the last field as + * the patch number. *ARGH* + */ +#define PRID_REV_ENCODE_44(ver, rev) \ + ((ver) << 4 | (rev)) +#define PRID_REV_ENCODE_332(ver, rev, patch) \ + ((ver) << 5 | (rev) << 2 | (patch)) + +/* * FPU implementation/revision register (CP1 control register 0). * * +---------------------------------+----------------+----------------+ |