--- a/arch/mips/include/asm/mach-bcm63xx/bcm963xx_tag.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm963xx_tag.h
@@ -86,8 +86,10 @@ struct bcm_tag {
 	char rootfs_crc[CRC_LEN];
 	/* 224-227: CRC32 of kernel partition */
 	char kernel_crc[CRC_LEN];
-	/* 228-235: Unused at present */
-	char reserved1[8];
+	/* 228-231: Image sequence number */
+	char image_sequence[4];
+	/* 222-235: Openwrt: real rootfs length */
+	char real_rootfs_length[4];
 	/* 236-239: CRC32 of header excluding last 20 bytes */
 	char header_crc[CRC_LEN];
 	/* 240-255: Unused at present */
--- a/drivers/mtd/maps/bcm963xx-flash.c
+++ b/drivers/mtd/maps/bcm963xx-flash.c
@@ -65,7 +65,7 @@ static int parse_cfe_partitions(struct m
 	int ret;
 	size_t retlen;
 	unsigned int rootfsaddr, kerneladdr, spareaddr;
-	unsigned int rootfslen, kernellen, sparelen, totallen;
+	unsigned int rootfslen, kernellen, sparelen;
 	int namelen = 0;
 	int i;
 	char *boardid;
@@ -86,7 +86,7 @@ static int parse_cfe_partitions(struct m
 
 	sscanf(buf->kernel_address, "%u", &kerneladdr);
 	sscanf(buf->kernel_length, "%u", &kernellen);
-	sscanf(buf->total_length, "%u", &totallen);
+	rootfslen = *(uint32_t *)(&(buf->real_rootfs_length));
 	tagversion = &(buf->tag_version[0]);
 	boardid = &(buf->board_id[0]);
 
@@ -95,7 +95,8 @@ static int parse_cfe_partitions(struct m
 
 	kerneladdr = kerneladdr - BCM63XX_EXTENDED_SIZE;
 	rootfsaddr = kerneladdr + kernellen;
-	spareaddr = roundup(totallen, master->erasesize) + master->erasesize;
+	rootfslen = roundup(rootfslen, master->erasesize);
+	spareaddr = rootfsaddr + rootfslen;
 	sparelen = master->size - spareaddr - master->erasesize;
 	rootfslen = spareaddr - rootfsaddr;
 
