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m68knommu: fix 528x ColdFire cache settings

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Fix problems with the 528x ColdFire CPU cache setup.
Do not cache the flash region (if present), and make the runtime
settings consistent with the init setting.

Problems pointed out by Bernd Buttner <b.buettner@mkc-gmbh.de>

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Greg Ungerer 2008-02-01 17:38:24 +10:00 committed by Linus Torvalds
parent 9f69ba86d6
commit b7dcf7fe7c
2 changed files with 2 additions and 2 deletions
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2
include/asm-m68knommu/cacheflush.h
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@ -53,7 +53,7 @@ static inline void __flush_cache_all(void)
#endif /* CONFIG_M5407 */
#if defined(CONFIG_M527x) || defined(CONFIG_M528x)
__asm__ __volatile__ (
"movel #0x81400100, %%d0\n\t"
"movel #0x81000200, %%d0\n\t"
"movec %%d0, %%CACR\n\t"
"nop\n\t"
: : : "d0" );

2
include/asm-m68knommu/mcfcache.h
View File

@ -60,7 +60,7 @@
nop
movel #0x0000c020, %d0 /* Set SDRAM cached only */
movec %d0, %ACR0
movel #0xff00c000, %d0 /* Cache Flash also */
movel #0x00000000, %d0 /* No other regions cached */
movec %d0, %ACR1
movel #0x80000200, %d0 /* Setup cache mask */
movec %d0, %CACR /* Enable cache */