diff options
Diffstat (limited to 'drivers/mtd/redboot.c')
| -rw-r--r-- | drivers/mtd/redboot.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/mtd/redboot.c b/drivers/mtd/redboot.c index a459ffa1e67..a61351f88ec 100644 --- a/drivers/mtd/redboot.c +++ b/drivers/mtd/redboot.c @@ -94,7 +94,16 @@ static int parse_redboot_partitions(struct mtd_info *master, * (NOTE: this is 'size' not 'data_length'; size is * the full size of the entry.) */ - if (swab32(buf[i].size) == master->erasesize) { + + /* RedBoot can combine the FIS directory and + config partitions into a single eraseblock; + we assume wrong-endian if either the swapped + 'size' matches the eraseblock size precisely, + or if the swapped size actually fits in an + eraseblock while the unswapped size doesn't. */ + if (swab32(buf[i].size) == master->erasesize || + (buf[i].size > master->erasesize + && swab32(buf[i].size) < master->erasesize)) { int j; /* Update numslots based on actual FIS directory size */ numslots = swab32(buf[i].size) / sizeof (struct fis_image_desc); @@ -122,7 +131,7 @@ static int parse_redboot_partitions(struct mtd_info *master, swab32s(&buf[j].desc_cksum); swab32s(&buf[j].file_cksum); } - } else { + } else if (buf[i].size < master->erasesize) { /* Update numslots based on actual FIS directory size */ numslots = buf[i].size / sizeof(struct fis_image_desc); } |