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-rw-r--r--include/asm-m68knommu/cacheflush.h75
1 files changed, 75 insertions, 0 deletions
diff --git a/include/asm-m68knommu/cacheflush.h b/include/asm-m68knommu/cacheflush.h
new file mode 100644
index 000000000000..aa7a2ffa41af
--- /dev/null
+++ b/include/asm-m68knommu/cacheflush.h
@@ -0,0 +1,75 @@
+#ifndef _M68KNOMMU_CACHEFLUSH_H
+#define _M68KNOMMU_CACHEFLUSH_H
+
+/*
+ * (C) Copyright 2000-2002, 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_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 copy_to_user_page(vma, page, vaddr, dst, src, len) \
+ memcpy(dst, src, len)
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+ memcpy(dst, src, len)
+
+extern inline void __flush_cache_all(void)
+{
+#ifdef CONFIG_M5407
+ /*
+ * Use cpushl to push and invalidate all cache lines.
+ * Gas doesn't seem to know how to generate the ColdFire
+ * cpushl instruction... Oh well, bit stuff it for now.
+ */
+ __asm__ __volatile__ (
+ "nop\n\t"
+ "clrl %%d0\n\t"
+ "1:\n\t"
+ "movel %%d0,%%a0\n\t"
+ "2:\n\t"
+ ".word 0xf468\n\t"
+ "addl #0x10,%%a0\n\t"
+ "cmpl #0x00000800,%%a0\n\t"
+ "blt 2b\n\t"
+ "addql #1,%%d0\n\t"
+ "cmpil #4,%%d0\n\t"
+ "bne 1b\n\t"
+ "movel #0xb6088500,%%d0\n\t"
+ "movec %%d0,%%CACR\n\t"
+ : : : "d0", "a0" );
+#endif /* CONFIG_M5407 */
+#ifdef CONFIG_M5272
+ __asm__ __volatile__ (
+ "movel #0x01000000, %%d0\n\t"
+ "movec %%d0, %%CACR\n\t"
+ "nop\n\t"
+ "movel #0x80000100, %%d0\n\t"
+ "movec %%d0, %%CACR\n\t"
+ "nop\n\t"
+ : : : "d0" );
+#endif /* CONFIG_M5272 */
+#if 0 /* CONFIG_M5249 */
+ __asm__ __volatile__ (
+ "movel #0x01000000, %%d0\n\t"
+ "movec %%d0, %%CACR\n\t"
+ "nop\n\t"
+ "movel #0xa0000200, %%d0\n\t"
+ "movec %%d0, %%CACR\n\t"
+ "nop\n\t"
+ : : : "d0" );
+#endif /* CONFIG_M5249 */
+}
+
+#endif /* _M68KNOMMU_CACHEFLUSH_H */