fixup the weird fis location for the Sidewinder

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11815 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/ixp4xx/patches-2.6.26/116-sidewinder_fis_location.patch

@@ -0,0 +1,30 @@
+--- a/drivers/mtd/redboot.c
++++ b/drivers/mtd/redboot.c
+@@ -13,6 +13,8 @@
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
+ 
++#include <asm/mach-types.h>
++
+ struct fis_image_desc {
+     unsigned char name[16];      // Null terminated name
+     uint32_t	  flash_base;    // Address within FLASH of image
+@@ -30,7 +32,8 @@
+ 	struct fis_list *next;
+ };
+ 
+-static int directory = CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK;
++int directory = CONFIG_MTD_REDBOOT_DIRECTORY_BLOCK;
++
+ module_param(directory, int, 0);
+ 
+ static inline int redboot_checksum(struct fis_image_desc *img)
+@@ -58,6 +61,8 @@
+ #ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
+ 	static char nullstring[] = "unallocated";
+ #endif
++	if (machine_is_sidewinder())
++		directory = -5;
+ 
+ 	if ( directory < 0 ) {
+ 		offset = master->size + directory * master->erasesize;