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-rw-r--r--arch/blackfin/mach-common/cache-c.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/blackfin/mach-common/cache-c.c b/arch/blackfin/mach-common/cache-c.c
new file mode 100644
index 000000000000..e6ab1f815123
--- /dev/null
+++ b/arch/blackfin/mach-common/cache-c.c
@@ -0,0 +1,24 @@
+/*
+ * Blackfin cache control code (simpler control-style functions)
+ *
+ * Copyright 2004-2008 Analog Devices Inc.
+ *
+ * Enter bugs at http://blackfin.uclinux.org/
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <asm/blackfin.h>
+
+/* Invalidate the Entire Data cache by
+ * clearing DMC[1:0] bits
+ */
+void blackfin_invalidate_entire_dcache(void)
+{
+ u32 dmem = bfin_read_DMEM_CONTROL();
+ SSYNC();
+ bfin_write_DMEM_CONTROL(dmem & ~0xc);
+ SSYNC();
+ bfin_write_DMEM_CONTROL(dmem);
+ SSYNC();
+}