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| author | Rafał Miłecki <zajec5@gmail.com> | 2013-12-21 19:39:11 +0100 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2014-01-07 10:07:36 -0800 |
| commit | 4f8aaf72287578c846ed7ac8c6114aacbf416e45 (patch) | |
| tree | e68c6c996eb717cf220685324620e33439d7fa0e /drivers/mtd | |
| parent | 7f11b4d411d0e1ac9217d8a0546f60e057540772 (diff) | |
| download | linux-stable-4f8aaf72287578c846ed7ac8c6114aacbf416e45.tar.gz linux-stable-4f8aaf72287578c846ed7ac8c6114aacbf416e45.tar.bz2 linux-stable-4f8aaf72287578c846ed7ac8c6114aacbf416e45.zip | |
mtd: bcm47xxpart: find boot partition by CFE magic
Some devices have even nicer-to-recognize CFE thanks to the magic.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/bcm47xxpart.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c index 931746ded989..877c17c7f5d3 100644 --- a/drivers/mtd/bcm47xxpart.c +++ b/drivers/mtd/bcm47xxpart.c @@ -23,10 +23,11 @@ * Amount of bytes we read when analyzing each block of flash memory. * Set it big enough to allow detecting partition and reading important data. */ -#define BCM47XXPART_BYTES_TO_READ 0x404 +#define BCM47XXPART_BYTES_TO_READ 0x4e8 /* Magics */ #define BOARD_DATA_MAGIC 0x5246504D /* MPFR */ +#define CFE_MAGIC 0x43464531 /* 1EFC */ #define FACTORY_MAGIC 0x59544346 /* FCTY */ #define POT_MAGIC1 0x54544f50 /* POTT */ #define POT_MAGIC2 0x504f /* OP */ @@ -102,8 +103,9 @@ static int bcm47xxpart_parse(struct mtd_info *master, continue; } - /* CFE has small NVRAM at 0x400 */ - if (buf[0x400 / 4] == NVRAM_HEADER) { + /* Magic or small NVRAM at 0x400 */ + if ((buf[0x4e0 / 4] == CFE_MAGIC && buf[0x4e4 / 4] == CFE_MAGIC) || + (buf[0x400 / 4] == NVRAM_HEADER)) { bcm47xxpart_add_part(&parts[curr_part++], "boot", offset, MTD_WRITEABLE); continue; |