diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-14 12:31:43 +0900 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-14 12:31:43 +0900 |
commit | 82cb6acea4d10fa4080612c58deb63993f558e5a (patch) | |
tree | ba6f0b8281e37c7e1830ef2162d38d8a2bc2fbb7 /drivers/mtd/bcm47xxpart.c | |
parent | 0d522ee7499e4abe7189b2f1728e838959b8ddde (diff) | |
parent | 885d71e5838f68d5dbee92ab952cc90ad6c1dc6b (diff) |
Merge tag 'for-linus-20131112' of git://git.infradead.org/linux-mtd
Pull MTD changes from Brian Norris:
- Unify some compile-time differences so that we have fewer uses of
#ifdef CONFIG_OF in atmel_nand
- Other general cleanups (removing unused functions, options,
variables, fields; use correct interfaces)
- Fix BUG() for new odd-sized NAND, which report non-power-of-2
dimensions via ONFI
- Miscellaneous driver fixes (SPI NOR flash; BCM47xx NAND flash; etc.)
- Improve differentiation between SLC and MLC NAND -- this clarifies an
ABI issue regarding the MTD "type" (in sysfs and in the MEMGETINFO
ioctl), where the MTD_MLCNANDFLASH type was present but
inconsistently used
- Extend GPMI NAND to support multi-chip-select NAND for some platforms
- Many improvements to the OMAP2/3 NAND driver, including an expanded
DT binding to bring us closer to mainline support for some OMAP
systems
- Fix a deadlock in the error path of the Atmel NAND driver probe
- Correct the error codes from MTD mmap() to conform to POSIX and the
Linux Programmer's Manual. This is an acknowledged change in the MTD
ABI, but I can't imagine somebody relying on the non-standard -ENOSYS
error code specifically. Am I just being unimaginative? :)
- Fix a few important GPMI NAND bugs (one regression from 3.12 and one
long-standing race condition)
- More? Read the log!
* tag 'for-linus-20131112' of git://git.infradead.org/linux-mtd: (98 commits)
mtd: gpmi: fix the NULL pointer
mtd: gpmi: fix kernel BUG due to racing DMA operations
mtd: mtdchar: return expected errors on mmap() call
mtd: gpmi: only scan two chips for imx6
mtd: gpmi: Use devm_kzalloc()
mtd: atmel_nand: fix bug driver will in a dead lock if no nand detected
mtd: nand: use a local variable to simplify the nand_scan_tail
mtd: nand: remove deprecated IRQF_DISABLED
mtd: dataflash: Say if we find a device we don't support
mtd: nand: omap: fix error return code in omap_nand_probe()
mtd: nand_bbt: kill NAND_BBT_SCANALLPAGES
mtd: m25p80: fixup device removal failure path
mtd: mxc_nand: Include linux/of.h header
mtd: remove duplicated include from mtdcore.c
mtd: m25p80: add support for Macronix mx25l3255e
mtd: nand: omap: remove selection of BCH ecc-scheme via KConfig
mtd: nand: omap: updated devm_xx for all resource allocation and free calls
mtd: nand: omap: use drivers/mtd/nand/nand_bch.c wrapper for BCH ECC instead of lib/bch.c
mtd: nand: omap: clean-up ecc layout for BCH ecc schemes
mtd: nand: omap2: clean-up BCHx_HW and BCHx_SW ECC configurations in device_probe
...
Diffstat (limited to 'drivers/mtd/bcm47xxpart.c')
-rw-r--r-- | drivers/mtd/bcm47xxpart.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c index 9279a9174f8..7a6384b0962 100644 --- a/drivers/mtd/bcm47xxpart.c +++ b/drivers/mtd/bcm47xxpart.c @@ -27,11 +27,13 @@ /* Magics */ #define BOARD_DATA_MAGIC 0x5246504D /* MPFR */ +#define FACTORY_MAGIC 0x59544346 /* FCTY */ #define POT_MAGIC1 0x54544f50 /* POTT */ #define POT_MAGIC2 0x504f /* OP */ #define ML_MAGIC1 0x39685a42 #define ML_MAGIC2 0x26594131 #define TRX_MAGIC 0x30524448 +#define SQSH_MAGIC 0x71736873 /* shsq */ struct trx_header { uint32_t magic; @@ -71,7 +73,14 @@ static int bcm47xxpart_parse(struct mtd_info *master, /* Alloc */ parts = kzalloc(sizeof(struct mtd_partition) * BCM47XXPART_MAX_PARTS, GFP_KERNEL); + if (!parts) + return -ENOMEM; + buf = kzalloc(BCM47XXPART_BYTES_TO_READ, GFP_KERNEL); + if (!buf) { + kfree(parts); + return -ENOMEM; + } /* Parse block by block looking for magics */ for (offset = 0; offset <= master->size - blocksize; @@ -110,6 +119,13 @@ static int bcm47xxpart_parse(struct mtd_info *master, continue; } + /* Found on Huawei E970 */ + if (buf[0x000 / 4] == FACTORY_MAGIC) { + bcm47xxpart_add_part(&parts[curr_part++], "factory", + offset, MTD_WRITEABLE); + continue; + } + /* POT(TOP) */ if (buf[0x000 / 4] == POT_MAGIC1 && (buf[0x004 / 4] & 0xFFFF) == POT_MAGIC2) { @@ -167,6 +183,13 @@ static int bcm47xxpart_parse(struct mtd_info *master, offset = rounddown(offset + trx->length, blocksize); continue; } + + /* Squashfs on devices not using TRX */ + if (buf[0x000 / 4] == SQSH_MAGIC) { + bcm47xxpart_add_part(&parts[curr_part++], "rootfs", + offset, 0); + continue; + } } /* Look for NVRAM at the end of the last block. */ |