X-Git-Url: https://git.archive.openwrt.org/?p=openwrt.git;a=blobdiff_plain;f=target%2Flinux%2Framips%2Fimage%2Flzma-loader%2Fsrc%2Fcache.c;fp=target%2Flinux%2Framips%2Fimage%2Flzma-loader%2Fsrc%2Fcache.c;h=28cc848333b729e08f7cf64af0cc838e8d190d05;hp=0000000000000000000000000000000000000000;hb=deaa1c19469b1b9917ddb58ba6c8417edfd21e94;hpb=bb153c196b6efc883021b9a91d8c65770203e29a;ds=sidebyside

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
index 0000000000..28cc848333
--- /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;
+	}
+}