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mtd: cfi_cmdset_0002: add CFI detection for SST 38VF640x chips 

Add support for SST38VF640x chips in CFI mode.

Signed-off-by: Guillaume LECERF <glecerf@gmail.com>
Signed-off-by: yidong zhang <zhangyd6@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Guillaume LECERF 2010-10-26 11:31:55 +01:00 committed by David Woodhouse
parent fc61015f72
commit 9fc05fcada
1 changed files with 26 additions and 0 deletions
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26
drivers/mtd/chips/cfi_cmdset_0002.c
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@ -293,6 +293,21 @@ static void fixup_sst39vf_rev_b(struct mtd_info *mtd, void *param)
cfi->addr_unlock2 = 0x2AA;
}
static void fixup_sst38vf640x_sectorsize(struct mtd_info *mtd, void *param)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
fixup_sst39vf_rev_b(mtd, param);
/*
* CFI reports 1024 sectors (0x03ff+1) of 64KBytes (0x0100*256) where
* it should report a size of 8KBytes (0x0020*256).
*/
cfi->cfiq->EraseRegionInfo[0] = 0x002003ff;
pr_warning("%s: Bad 38VF640x CFI data; adjusting sector size from 64 to 8KiB\n", mtd->name);
}
static void fixup_s29gl064n_sectors(struct mtd_info *mtd, void *param)
{
struct map_info *map = mtd->priv;
@ -344,6 +359,10 @@ static struct cfi_fixup cfi_fixup_table[] = {
{ CFI_MFR_AMD, 0x1301, fixup_s29gl064n_sectors, NULL, },
{ CFI_MFR_AMD, 0x1a00, fixup_s29gl032n_sectors, NULL, },
{ CFI_MFR_AMD, 0x1a01, fixup_s29gl032n_sectors, NULL, },
{ CFI_MFR_SST, 0x536A, fixup_sst38vf640x_sectorsize, NULL, }, /* SST38VF6402 */
{ CFI_MFR_SST, 0x536B, fixup_sst38vf640x_sectorsize, NULL, }, /* SST38VF6401 */
{ CFI_MFR_SST, 0x536C, fixup_sst38vf640x_sectorsize, NULL, }, /* SST38VF6404 */
{ CFI_MFR_SST, 0x536D, fixup_sst38vf640x_sectorsize, NULL, }, /* SST38VF6403 */
#if !FORCE_WORD_WRITE
{ CFI_MFR_ANY, CFI_ID_ANY, fixup_use_write_buffers, NULL, },
#endif
@ -374,6 +393,13 @@ static void cfi_fixup_major_minor(struct cfi_private *cfi,
if (cfi->mfr == CFI_MFR_SAMSUNG && cfi->id == 0x257e &&
extp->MajorVersion == '0')
extp->MajorVersion = '1';
/*
* SST 38VF640x chips report major=0xFF / minor=0xFF.
*/
if (cfi->mfr == CFI_MFR_SST && (cfi->id >> 4) == 0x0536) {
extp->MajorVersion = '1';
extp->MinorVersion = '0';
}
}
struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)