Messages in this thread Patch in this message | | | Date | Fri, 1 Feb 2008 17:38:24 +1000 | From | Greg Ungerer <> | Subject | [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> ---
diff -Naurp linux-2.6.24/include/asm-m68knommu/cacheflush.h linux-2.6.24-uc0/include/asm-m68knommu/cacheflush.h --- linux-2.6.24/include/asm-m68knommu/cacheflush.h 2008-01-25 08:58:37.000000000 +1000 +++ linux-2.6.24-uc0/include/asm-m68knommu/cacheflush.h 2007-10-29 16:43:08.000000000 +1000 @@ -53,7 +53,7 @@ static inline void __flush_cache_all(voi #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" ); diff -Naurp linux-2.6.24/include/asm-m68knommu/mcfcache.h linux-2.6.24-uc0/include/asm-m68knommu/mcfcache.h --- linux-2.6.24/include/asm-m68knommu/mcfcache.h 2008-01-25 08:58:37.000000000 +1000 +++ linux-2.6.24-uc0/include/asm-m68knommu/mcfcache.h 2007-10-29 16:43:08.000000000 +1000 @@ -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 */
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