openwrt/target/linux/generic-2.6/patches-2.6.26/071-redboot_boardconfig.patch

--- a/drivers/mtd/redboot.c
+++ b/drivers/mtd/redboot.c
@@ -13,6 +13,8 @@
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 
+#define BOARD_CONFIG_PART		"boardconfig"
+
 struct fis_image_desc {
     unsigned char name[16];      // Null terminated name
     uint32_t	  flash_base;    // Address within FLASH of image
@@ -43,6 +45,7 @@ static int parse_redboot_partitions(stru
                              struct mtd_partition **pparts,
                              unsigned long fis_origin)
 {
+	unsigned long max_offset = 0;
 	int nrparts = 0;
 	struct fis_image_desc *buf;
 	struct mtd_partition *parts;
@@ -211,14 +214,14 @@ static int parse_redboot_partitions(stru
 		}
 	}
 #endif
-	parts = kzalloc(sizeof(*parts)*nrparts + nulllen + namelen, GFP_KERNEL);
+	parts = kzalloc(sizeof(*parts) * (nrparts + 1) + nulllen + namelen + sizeof(BOARD_CONFIG_PART), GFP_KERNEL);
 
 	if (!parts) {
 		ret = -ENOMEM;
 		goto out;
 	}
 
-	nullname = (char *)&parts[nrparts];
+	nullname = (char *)&parts[nrparts + 1];
 #ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
 	if (nulllen > 0) {
 		strcpy(nullname, nullstring);
@@ -237,6 +240,8 @@ static int parse_redboot_partitions(stru
 	}
 #endif
 	for ( ; i<nrparts; i++) {
+		if(max_offset < buf[i].flash_base + buf[i].size)
+			max_offset = buf[i].flash_base + buf[i].size;
 		parts[i].size = fl->img->size;
 		parts[i].offset = fl->img->flash_base;
 		parts[i].name = names;
@@ -270,6 +275,14 @@ static int parse_redboot_partitions(stru
 		fl = fl->next;
 		kfree(tmp_fl);
 	}
+	if(master->size - max_offset >= master->erasesize)
+	{
+		parts[nrparts].size = master->size - max_offset;
+		parts[nrparts].offset = max_offset;
+		parts[nrparts].name = names;
+		strcpy(names, BOARD_CONFIG_PART);
+		nrparts++;
+	}
 	ret = nrparts;
 	*pparts = parts;
  out: