brcm63xx: add working lzma-loader and use it for initramfs

Add a working lzma loader and use it for generating initramfs kernels
to allow easily netbooting elf kernels on devices with a 4 MiB CFE
size limit.

Based on ar71xx's lzma-loader.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 41940

target/linux/brcm63xx/image/lzma-loader/src/config.h

@@ -0,0 +1,31 @@
+/*
+ * LZMA compressed kernel loader for Atheros AR7XXX/AR9XXX based boards
+ *
+ * Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * 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.
+ *
+ */
+
+#ifndef _CONFIG_H_
+#define _CONFIG_H_
+
+#define CONFIG_ICACHE_SIZE	(32 * 1024)
+#define CONFIG_DCACHE_SIZE	(32 * 1024)
+#define CONFIG_CACHELINE_SIZE	16
+
+#ifndef CONFIG_FLASH_OFFS
+#define CONFIG_FLASH_OFFS	0
+#endif
+
+#ifndef CONFIG_FLASH_MAX
+#define CONFIG_FLASH_MAX	0
+#endif
+
+#ifndef CONFIG_FLASH_STEP
+#define CONFIG_FLASH_STEP	0x1000
+#endif
+
+#endif /* _CONFIG_H_ */