diff options
| author | Greg Ungerer <gerg@snapgear.com> | 2005-09-11 21:18:10 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-11 23:43:46 -0400 |
| commit | 8a6e43e9ee84eb8fb39bfdf8f0b6e466905491d0 (patch) | |
| tree | e833567f0b1c9e54c25244905cf630f509e66c02 /include | |
| parent | 7dd6a2aa27a7a8036fbaf60cbce38a64128d1d4d (diff) | |
[PATCH] m68knommu: cache support for 523x/528x processors
Add support for the cache of the ColdFIre 523x family of processors.
Enable the 528x cache by default now, all final shipping silicon
has the cache bug fixed.
Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-m68knommu/mcfcache.h | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/include/asm-m68knommu/mcfcache.h b/include/asm-m68knommu/mcfcache.h index bdd8c53ef34c..b17cd920977f 100644 --- a/include/asm-m68knommu/mcfcache.h +++ b/include/asm-m68knommu/mcfcache.h | |||
| @@ -33,7 +33,7 @@ | |||
| 33 | .endm | 33 | .endm |
| 34 | #endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */ | 34 | #endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */ |
| 35 | 35 | ||
| 36 | #if defined(CONFIG_M527x) | 36 | #if defined(CONFIG_M523x) || defined(CONFIG_M527x) |
| 37 | /* | 37 | /* |
| 38 | * New version 2 cores have a configurable split cache arrangement. | 38 | * New version 2 cores have a configurable split cache arrangement. |
| 39 | * For now I am just enabling instruction cache - but ultimately I | 39 | * For now I am just enabling instruction cache - but ultimately I |
| @@ -51,23 +51,20 @@ | |||
| 51 | movec %d0,%CACR /* enable cache */ | 51 | movec %d0,%CACR /* enable cache */ |
| 52 | nop | 52 | nop |
| 53 | .endm | 53 | .endm |
| 54 | #endif /* CONFIG_M527x */ | 54 | #endif /* CONFIG_M523x || CONFIG_M527x */ |
| 55 | 55 | ||
| 56 | #if defined(CONFIG_M528x) | 56 | #if defined(CONFIG_M528x) |
| 57 | /* | ||
| 58 | * Cache is totally broken on early 5282 silicon. So far now we | ||
| 59 | * disable its cache all together. | ||
| 60 | */ | ||
| 61 | .macro CACHE_ENABLE | 57 | .macro CACHE_ENABLE |
| 62 | movel #0x01000000,%d0 | ||
| 63 | movec %d0,%CACR /* invalidate cache */ | ||
| 64 | nop | 58 | nop |
| 65 | movel #0x0000c000,%d0 /* set SDRAM cached only */ | 59 | movel #0x01000000, %d0 |
| 66 | movec %d0,%ACR0 | 60 | movec %d0, %CACR /* Invalidate cache */ |
| 67 | movel #0x00000000,%d0 /* no other regions cached */ | 61 | nop |
| 68 | movec %d0,%ACR1 | 62 | movel #0x0000c020, %d0 /* Set SDRAM cached only */ |
| 69 | movel #0x00000000,%d0 /* configure cache */ | 63 | movec %d0, %ACR0 |
| 70 | movec %d0,%CACR /* enable cache */ | 64 | movel #0xff00c000, %d0 /* Cache Flash also */ |
| 65 | movec %d0, %ACR1 | ||
| 66 | movel #0x80000200, %d0 /* Setup cache mask */ | ||
| 67 | movec %d0, %CACR /* Enable cache */ | ||
| 71 | nop | 68 | nop |
| 72 | .endm | 69 | .endm |
| 73 | #endif /* CONFIG_M528x */ | 70 | #endif /* CONFIG_M528x */ |