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| author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2009-07-06 08:57:53 +0300 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2009-07-07 11:37:45 +0300 |
| commit | ebf53f421308c2f59c9bcbad4c5c297a0d00199a (patch) | |
| tree | 1ec5084484bcaea259a210147cb278af4286f7e6 /drivers/mtd/ubi/build.c | |
| parent | fe96efc1a3c049f0a1bcd9b65e0faeb751ce5ec6 (diff) | |
| download | op-kernel-dev-ebf53f421308c2f59c9bcbad4c5c297a0d00199a.zip op-kernel-dev-ebf53f421308c2f59c9bcbad4c5c297a0d00199a.tar.gz | |
UBI: fix NOR flash recovery
This commit fixes NOR flash recovery issues observed with Spansion
S29GL512N NOR.
When NOR erases, it first fills PEBs with zeroes, then sets all bytes
to 0xFF. Filling with zeroes starts from the end of the PEB. And when
power is cut, this results in PEBs containing correct EC and VID headers
but corrupted with zeros at the end. This confuses UBI and it mistakinly
accepts these PEBs and associate them with LEBs.
Fis this issue by zeroing EC and VID magics before erasing PEBs, to
make UBI later refuse zem.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi/build.c')
| -rw-r--r-- | drivers/mtd/ubi/build.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index db0b9cb..e1f7d0a 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -657,6 +657,11 @@ static int io_init(struct ubi_device *ubi) if (ubi->mtd->block_isbad && ubi->mtd->block_markbad) ubi->bad_allowed = 1; + if (ubi->mtd->type == MTD_NORFLASH) { + ubi_assert(ubi->mtd->writesize == 1); + ubi->nor_flash = 1; + } + ubi->min_io_size = ubi->mtd->writesize; ubi->hdrs_min_io_size = ubi->mtd->writesize >> ubi->mtd->subpage_sft; |
