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-rw-r--r--arch/sh64/boot/compressed/cache.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/sh64/boot/compressed/cache.c b/arch/sh64/boot/compressed/cache.c
new file mode 100644
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--- /dev/null
+++ b/arch/sh64/boot/compressed/cache.c
@@ -0,0 +1,39 @@
+/*
+ * arch/shmedia/boot/compressed/cache.c -- simple cache management functions
+ *
+ * Code extracted from sh-ipl+g, sh-stub.c, which has the copyright:
+ *
+ * This is originally based on an m68k software stub written by Glenn
+ * Engel at HP, but has changed quite a bit.
+ *
+ * Modifications for the SH by Ben Lee and Steve Chamberlain
+ *
+****************************************************************************
+
+ THIS SOFTWARE IS NOT COPYRIGHTED
+
+ HP offers the following for use in the public domain. HP makes no
+ warranty with regard to the software or it's performance and the
+ user accepts the software "AS IS" with all faults.
+
+ HP DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD
+ TO THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+
+****************************************************************************/
+
+#define CACHE_ENABLE 0
+#define CACHE_DISABLE 1
+
+int cache_control(unsigned int command)
+{
+ volatile unsigned int *p = (volatile unsigned int *) 0x80000000;
+ int i;
+
+ for (i = 0; i < (32 * 1024); i += 32) {
+ (void *) *p;
+ p += (32 / sizeof (int));
+ }
+
+ return 0;
+}