From 8a6e43e9ee84eb8fb39bfdf8f0b6e466905491d0 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Mon, 12 Sep 2005 11:18:10 +1000 Subject: [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 Signed-off-by: Linus Torvalds --- include/asm-m68knommu/mcfcache.h | 25 +++++++++++-------------- 1 file changed, 11 insertions(+), 14 deletions(-) (limited to 'include/asm-m68knommu') 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 */ -- cgit v1.2.3