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| author | Stefan Roese <sr@denx.de> | 2009-03-18 11:17:37 +0100 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2009-04-29 11:06:06 +0200 |
| commit | f8e2b3107ee00f2782f8ebf47e3f09cda4e2353a (patch) | |
| tree | d3a0679e1dfc290fcb87485e1a25e0614d5fa887 /drivers/mtd | |
| parent | 4d9eab89b3b2c2ed432b14d355a56f274d8aac75 (diff) | |
| download | u-boot-imx-f8e2b3107ee00f2782f8ebf47e3f09cda4e2353a.zip u-boot-imx-f8e2b3107ee00f2782f8ebf47e3f09cda4e2353a.tar.gz u-boot-imx-f8e2b3107ee00f2782f8ebf47e3f09cda4e2353a.tar.bz2 | |
MTD: Change cfi-mtd to accept non-uniform sector sizes
With this patch non-uniform NOR FLASH chips (chips with multiple erase
regions) can be exported via the cfi-mtd layer and therefor used by UBI.
We select the largest sector size as erasesize. The cfi driver will make
sure that the smaller sectors are handled correctly.
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/cfi_mtd.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/drivers/mtd/cfi_mtd.c b/drivers/mtd/cfi_mtd.c index 9ac1c86..f03e4fb 100644 --- a/drivers/mtd/cfi_mtd.c +++ b/drivers/mtd/cfi_mtd.c @@ -142,22 +142,12 @@ static int cfi_mtd_set_erasesize(struct mtd_info *mtd, flash_info_t *fi) int sect_size = 0; int sect; + /* + * Select the largest sector size as erasesize (e.g. for UBI) + */ for (sect = 0; sect < fi->sector_count; sect++) { - if (!sect_size) { + if (flash_sector_size(fi, sect) > sect_size) sect_size = flash_sector_size(fi, sect); - continue; - } - - if (sect_size != flash_sector_size(fi, sect)) { - sect_size = 0; - break; - } - } - - if (!sect_size) { - puts("cfi-mtd: devices with multiple sector sizes are" - "not supported\n"); - return -EINVAL; } mtd->erasesize = sect_size; |