m68knommu: fix 528x ColdFire cache settings

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>

diff --git a/include/asm-m68knommu/cacheflush.h b/include/asm-m68knommu/cacheflush.h
index 163dcb1..29bc0aa 100644 (file)
--- a/include/asm-m68knommu/cacheflush.h
+++ b/include/asm-m68knommu/cacheflush.h
@@ -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" );

diff --git a/include/asm-m68knommu/mcfcache.h b/include/asm-m68knommu/mcfcache.h
index 7b61a8a..c042634 100644 (file)
--- a/include/asm-m68knommu/mcfcache.h
+++ b/include/asm-m68knommu/mcfcache.h
@@ -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 */