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| author | Ed Swierk <eswierk@arastra.com> | 2007-08-13 04:10:32 +0000 |
|---|---|---|
| committer | Peter Stuge <peter@stuge.se> | 2007-08-13 04:10:32 +0000 |
| commit | 3436698b6a91a921d7091d141b01c396bdc25dc1 (patch) | |
| tree | f6b80d9c28900cd14ca1cb5a07cf00d2c937f9e2 | |
| parent | 4d43255bef8ca14f707c1e21dd42d8a6afdf991c (diff) | |
| download | coreboot-3436698b6a91a921d7091d141b01c396bdc25dc1.tar.xz | |
Fix bug in probe_28sf040() causing flash corruption on SST49LF160C verify.
The first byte of the flash chip was read at the start of the function
and later written back to address 0 if the flash chip was not identified
as SST28SF040, which means most of the time. This write caused corruption
of flash contents when verifying a SST49LF160C part.
Signed-off-by: Ed Swierk <eswierk@arastra.com>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2744 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
| -rw-r--r-- | util/flashrom/sst28sf040.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/util/flashrom/sst28sf040.c b/util/flashrom/sst28sf040.c index f2d8167de0..c8f71f814e 100644 --- a/util/flashrom/sst28sf040.c +++ b/util/flashrom/sst28sf040.c @@ -106,10 +106,7 @@ static __inline__ int write_sector_28sf040(volatile uint8_t *bios, int probe_28sf040(struct flashchip *flash) { volatile uint8_t *bios = flash->virtual_memory; - uint8_t id1, id2, tmp; - - /* save the value at the beginning of the Flash */ - tmp = *bios; + uint8_t id1, id2; *bios = RESET; myusec_delay(10); @@ -127,8 +124,6 @@ int probe_28sf040(struct flashchip *flash) if (id1 == flash->manufacture_id && id2 == flash->model_id) return 1; - /* if there is no SST28SF040, restore the original value */ - *bios = tmp; return 0; } |