diff options
| author | Rafał Miłecki <zajec5@gmail.com> | 2014-12-01 18:50:20 +0100 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2015-01-07 12:24:15 -0800 |
| commit | bd10c26a4efe23e97ee9878a825c7e7a3e594946 (patch) | |
| tree | 3eb33722fc23d289e3e99dcbee21d26a45e6e6d1 /drivers/mtd/bcm47xxpart.c | |
| parent | 548cd3ab54da10f896daa7ca422236847a915734 (diff) | |
mtd: bcm47xxpart: support TRX data partition being UBI
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd/bcm47xxpart.c')
| -rw-r--r-- | drivers/mtd/bcm47xxpart.c | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c index cc13ea5ce4d5..26a4a4a4e8ab 100644 --- a/drivers/mtd/bcm47xxpart.c +++ b/drivers/mtd/bcm47xxpart.c @@ -40,6 +40,7 @@ #define ML_MAGIC2 0x26594131 #define TRX_MAGIC 0x30524448 #define SQSH_MAGIC 0x71736873 /* shsq */ +#define UBI_EC_MAGIC 0x23494255 /* UBI# */ struct trx_header { uint32_t magic; @@ -50,7 +51,7 @@ struct trx_header { uint32_t offset[3]; } __packed; -static void bcm47xxpart_add_part(struct mtd_partition *part, char *name, +static void bcm47xxpart_add_part(struct mtd_partition *part, const char *name, u64 offset, uint32_t mask_flags) { part->name = name; @@ -58,6 +59,26 @@ static void bcm47xxpart_add_part(struct mtd_partition *part, char *name, part->mask_flags = mask_flags; } +static const char *bcm47xxpart_trx_data_part_name(struct mtd_info *master, + size_t offset) +{ + uint32_t buf; + size_t bytes_read; + + if (mtd_read(master, offset, sizeof(buf), &bytes_read, + (uint8_t *)&buf) < 0) { + pr_err("mtd_read error while parsing (offset: 0x%X)!\n", + offset); + goto out_default; + } + + if (buf == UBI_EC_MAGIC) + return "ubi"; + +out_default: + return "rootfs"; +} + static int bcm47xxpart_parse(struct mtd_info *master, struct mtd_partition **pparts, struct mtd_part_parser_data *data) @@ -186,8 +207,11 @@ static int bcm47xxpart_parse(struct mtd_info *master, * we want to have jffs2 (overlay) in the same mtd. */ if (trx->offset[i]) { + const char *name; + + name = bcm47xxpart_trx_data_part_name(master, offset + trx->offset[i]); bcm47xxpart_add_part(&parts[curr_part++], - "rootfs", + name, offset + trx->offset[i], 0); i++; |