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[PATCH] m68knommu: cache support for 523x/528x processors

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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>
This commit is contained in:
Greg Ungerer 2005-09-12 11:18:10 +10:00 committed by Linus Torvalds
parent 7dd6a2aa27
commit 8a6e43e9ee
1 changed files with 11 additions and 14 deletions
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21
include/asm-m68knommu/mcfcache.h
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@ -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 */
movel #0x01000000, %d0
movec %d0, %CACR /* Invalidate cache */
nop
movel #0x0000c020, %d0 /* Set SDRAM cached only */
movec %d0, %ACR0
movel #0x00000000,%d0 /* no other regions cached */
movel #0xff00c000, %d0 /* Cache Flash also */
movec %d0, %ACR1
movel #0x00000000,%d0 /* configure cache */
movec %d0,%CACR /* enable cache */
movel #0x80000200, %d0 /* Setup cache mask */
movec %d0, %CACR /* Enable cache */
nop
.endm
#endif /* CONFIG_M528x */