diff options
| author | Rafał Miłecki <zajec5@gmail.com> | 2014-08-18 20:20:27 +0200 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2014-09-17 23:15:38 -0700 |
| commit | 024629fdca1bbb44a25d40c2362a878a7a67ce3b (patch) | |
| tree | 09749a9214afe4435ab962a3ed131091aa6e41d5 | |
| parent | 022a478ce650f5c36d2a9badfd805368a90fb506 (diff) | |
mtd: bcm47xxpart: find NVRAM partitions in middle blocks
Old devices used to have NVRAM at the very end of flash and they could
be unaligned (starting at some offset in a block).
In new devices NVRAM can be located quite randomly, however it seems to
always start at the beginning of a block. For example Netgear R6250 has
NVRAM located right after the bootloader, before the kernel partition.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| -rw-r--r-- | drivers/mtd/bcm47xxpart.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c index adfa74c1bc45..8057f52a45b7 100644 --- a/drivers/mtd/bcm47xxpart.c +++ b/drivers/mtd/bcm47xxpart.c @@ -199,6 +199,17 @@ static int bcm47xxpart_parse(struct mtd_info *master, continue; } + /* + * New (ARM?) devices may have NVRAM in some middle block. Last + * block will be checked later, so skip it. + */ + if (offset != master->size - blocksize && + buf[0x000 / 4] == NVRAM_HEADER) { + bcm47xxpart_add_part(&parts[curr_part++], "nvram", + offset, 0); + continue; + } + /* Read middle of the block */ if (mtd_read(master, offset + 0x8000, 0x4, &bytes_read, (uint8_t *)buf) < 0) { |