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authorGreg Ungerer <gerg@snapgear.com>2005-09-13 11:14:08 +1000
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-12 20:04:15 -0700
commit962d69ed6f5c911fbdb23ef2304e3a5903e5ccbb (patch)
tree2c256305537c01211ec2dcc8ea9a608f66603afe
parent35d91f75c2c9548e606e813413f03c5cc35da969 (diff)
downloadlinux-linaro-962d69ed6f5c911fbdb23ef2304e3a5903e5ccbb.tar.gz
[PATCH] m68knommu: fix cache actions for ColdFire 5249, 527x and 528x processors
Add better support for flushing the cache's on some ColdFire processors. The 5249 cache code is now enabled (it was stubbed out), it really is needed. Add support for the 527x and 528x families - we only use the simple instruction cache on them. Signed-off-by: Greg Ungerer <gerg@uclinux.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--include/asm-m68knommu/cacheflush.h29
1 files changed, 15 insertions, 14 deletions
diff --git a/include/asm-m68knommu/cacheflush.h b/include/asm-m68knommu/cacheflush.h
index aa7a2ffa41a..026bbc9565b 100644
--- a/include/asm-m68knommu/cacheflush.h
+++ b/include/asm-m68knommu/cacheflush.h
@@ -2,23 +2,23 @@
#define _M68KNOMMU_CACHEFLUSH_H
/*
- * (C) Copyright 2000-2002, Greg Ungerer <gerg@snapgear.com>
+ * (C) Copyright 2000-2004, Greg Ungerer <gerg@snapgear.com>
*/
#include <linux/mm.h>
#define flush_cache_all() __flush_cache_all()
#define flush_cache_mm(mm) do { } while (0)
-#define flush_cache_range(vma, start, end) do { } while (0)
-#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
-#define flush_dcache_range(start,len) do { } while (0)
+#define flush_cache_range(vma, start, end) __flush_cache_all()
+#define flush_cache_page(vma, vmaddr) do { } while (0)
+#define flush_dcache_range(start,len) __flush_cache_all()
#define flush_dcache_page(page) do { } while (0)
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
#define flush_icache_range(start,len) __flush_cache_all()
#define flush_icache_page(vma,pg) do { } while (0)
#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
-#define flush_cache_vmap(start, end) flush_cache_all()
-#define flush_cache_vunmap(start, end) flush_cache_all()
+#define flush_cache_vmap(start, end) do { } while (0)
+#define flush_cache_vunmap(start, end) do { } while (0)
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
memcpy(dst, src, len)
@@ -50,22 +50,23 @@ extern inline void __flush_cache_all(void)
"movec %%d0,%%CACR\n\t"
: : : "d0", "a0" );
#endif /* CONFIG_M5407 */
-#ifdef CONFIG_M5272
+#if defined(CONFIG_M527x) || defined(CONFIG_M528x)
__asm__ __volatile__ (
- "movel #0x01000000, %%d0\n\t"
- "movec %%d0, %%CACR\n\t"
- "nop\n\t"
- "movel #0x80000100, %%d0\n\t"
+ "movel #0x81400100, %%d0\n\t"
"movec %%d0, %%CACR\n\t"
"nop\n\t"
: : : "d0" );
-#endif /* CONFIG_M5272 */
-#if 0 /* CONFIG_M5249 */
+#endif /* CONFIG_M527x || CONFIG_M528x */
+#ifdef CONFIG_M5272
__asm__ __volatile__ (
"movel #0x01000000, %%d0\n\t"
"movec %%d0, %%CACR\n\t"
"nop\n\t"
- "movel #0xa0000200, %%d0\n\t"
+ : : : "d0" );
+#endif /* CONFIG_M5272 */
+#if CONFIG_M5249
+ __asm__ __volatile__ (
+ "movel #0xa1000200, %%d0\n\t"
"movec %%d0, %%CACR\n\t"
"nop\n\t"
: : : "d0" );