ralink: update patches

[openwrt.git] / target / linux / ramips / image / lzma-loader / src / cache.c

diff --git a/target/linux/ramips/image/lzma-loader/src/cache.c b/target/linux/ramips/image/lzma-loader/src/cache.c
new file mode 100644 (file)
index 0000000..28cc848
--- /dev/null
+++ b/target/linux/ramips/image/lzma-loader/src/cache.c
@@ -0,0 +1,43 @@
+/*
+ * LZMA compressed kernel loader for Atheros AR7XXX/AR9XXX based boards
+ *
+ * Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * The cache manipulation routine has been taken from the U-Boot project.
+ *     (C) Copyright 2003
+ *     Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ */
+
+#include "cache.h"
+#include "cacheops.h"
+#include "config.h"
+
+#define cache_op(op,addr)                                              \
+       __asm__ __volatile__(                                           \
+       "       .set    push                                    \n"     \
+       "       .set    noreorder                               \n"     \
+       "       .set    mips3\n\t                               \n"     \
+       "       cache   %0, %1                                  \n"     \
+       "       .set    pop                                     \n"     \
+       :                                                               \
+       : "i" (op), "R" (*(unsigned char *)(addr)))
+
+void flush_cache(unsigned long start_addr, unsigned long size)
+{
+       unsigned long lsize = CONFIG_CACHELINE_SIZE;
+       unsigned long addr = start_addr & ~(lsize - 1);
+       unsigned long aend = (start_addr + size - 1) & ~(lsize - 1);
+
+       while (1) {
+               cache_op(Hit_Writeback_Inv_D, addr);
+               cache_op(Hit_Invalidate_I, addr);
+               if (addr == aend)
+                       break;
+               addr += lsize;
+       }
+}