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authorGreg Ungerer <gerg@snapgear.com>2005-09-12 11:18:10 +1000
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-11 20:43:46 -0700
commit8a6e43e9ee84eb8fb39bfdf8f0b6e466905491d0 (patch)
treee833567f0b1c9e54c25244905cf630f509e66c02
parent7dd6a2aa27a7a8036fbaf60cbce38a64128d1d4d (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>
-rw-r--r--include/asm-m68knommu/mcfcache.h25
1 files changed, 11 insertions, 14 deletions
diff --git a/include/asm-m68knommu/mcfcache.h b/include/asm-m68knommu/mcfcache.h
index bdd8c53ef34..b17cd920977 100644
--- a/include/asm-m68knommu/mcfcache.h
+++ b/include/asm-m68knommu/mcfcache.h
@@ -33,7 +33,7 @@
.endm
#endif /* CONFIG_M5206 || CONFIG_M5206e || CONFIG_M5272 */
-#if defined(CONFIG_M527x)
+#if defined(CONFIG_M523x) || defined(CONFIG_M527x)
/*
* New version 2 cores have a configurable split cache arrangement.
* For now I am just enabling instruction cache - but ultimately I
@@ -51,23 +51,20 @@
movec %d0,%CACR /* enable cache */
nop
.endm
-#endif /* CONFIG_M527x */
+#endif /* CONFIG_M523x || CONFIG_M527x */
#if defined(CONFIG_M528x)
-/*
- * Cache is totally broken on early 5282 silicon. So far now we
- * disable its cache all together.
- */
.macro CACHE_ENABLE
- movel #0x01000000,%d0
- movec %d0,%CACR /* invalidate cache */
nop
- movel #0x0000c000,%d0 /* set SDRAM cached only */
- movec %d0,%ACR0
- movel #0x00000000,%d0 /* no other regions cached */
- movec %d0,%ACR1
- movel #0x00000000,%d0 /* configure cache */
- movec %d0,%CACR /* enable cache */
+ movel #0x01000000, %d0
+ movec %d0, %CACR /* Invalidate cache */
+ nop
+ movel #0x0000c020, %d0 /* Set SDRAM cached only */
+ movec %d0, %ACR0
+ movel #0xff00c000, %d0 /* Cache Flash also */
+ movec %d0, %ACR1
+ movel #0x80000200, %d0 /* Setup cache mask */
+ movec %d0, %CACR /* Enable cache */
nop
.endm
#endif /* CONFIG_M528x */