m68knommu: fix 528x ColdFire cache settings (b7dcf7fe) · Commits · 戴 / test

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>

include/asm-m68knommu/cacheflush.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -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" );

include/asm-m68knommu/mcfcache.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -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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