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| author | Ben Gardiner <bengardiner@nanometrics.ca> | 2011-06-14 16:35:06 -0400 |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2011-07-01 15:56:51 -0500 |
| commit | 169d54d8b33b4d06d6f215e2b312a0b18f7909dc (patch) | |
| tree | 0911e2f0acb0279b3bf8239c8d32546499a9ee18 /include/nand.h | |
| parent | c135456ff59aed0302f99a2e1327939bdced77f5 (diff) | |
| download | u-boot-imx-169d54d8b33b4d06d6f215e2b312a0b18f7909dc.zip u-boot-imx-169d54d8b33b4d06d6f215e2b312a0b18f7909dc.tar.gz u-boot-imx-169d54d8b33b4d06d6f215e2b312a0b18f7909dc.tar.bz2 | |
nand_util: drop trailing all-0xff pages if requested
Add a flag to nand_read_skip_bad() such that if true, any trailing
pages in an eraseblock whose contents are entirely 0xff will be
dropped.
The implementation is via a new drop_ffs() function which is
based on the function of the same name from the ubiformat
utility by Artem Bityutskiy.
This is as-per the reccomendations of the UBI FAQ [1]
[1] http://www.linux-mtd.infradead.org/doc/ubi.html#L_flasher_algo
Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca>
CC: Artem Bityutskiy <dedekind1@gmail.com>
Acked-by: Detlev Zundel <dzu@denx.de>
CC: Scott Wood <scottwood@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'include/nand.h')
| -rw-r--r-- | include/nand.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/nand.h b/include/nand.h index c5818f1..8d94b5c 100644 --- a/include/nand.h +++ b/include/nand.h @@ -118,6 +118,7 @@ int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length, #define WITH_YAFFS_OOB (1 << 0) /* whether write with yaffs format. This flag * is a 'mode' meaning it cannot be mixed with * other flags */ +#define WITH_DROP_FFS (1 << 1) /* drop trailing all-0xff pages */ int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length, u_char *buffer, int flags); |