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Flex-OneNAND driver support

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This patch adds support for Flex-OneNAND devices.

Signed-off-by: Rohit Hagargundgi <h.rohit@samsung.com>
Signed-off-by: Amul Kumar Saha <amul.saha@samsung.com>
This commit is contained in:
Amul Kumar Saha
2009-11-06 17:15:31 +05:30
committed by Scott Wood
parent 35209cbcee
commit cacbe91958
6 changed files with 705 additions and 103 deletions
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746
drivers/mtd/onenand/onenand_base.c
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File diff suppressed because it is too large Load Diff

14
drivers/mtd/onenand/onenand_bbt.c
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@@ -69,6 +69,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t * buf,
loff_t from;
size_t readlen, ooblen;
struct mtd_oob_ops ops;
int rgn;
printk(KERN_INFO "Scanning device for bad blocks\n");
@@ -82,7 +83,7 @@ static int create_bbt(struct mtd_info *mtd, uint8_t * buf,
/* Note that numblocks is 2 * (real numblocks) here;
* see i += 2 below as it makses shifting and masking less painful
*/
numblocks = mtd->size >> (bbm->bbt_erase_shift - 1);
numblocks = this->chipsize >> (bbm->bbt_erase_shift - 1);
startblock = 0;
from = 0;
@@ -115,7 +116,12 @@ static int create_bbt(struct mtd_info *mtd, uint8_t * buf,
}
}
i += 2;
from += (1 << bbm->bbt_erase_shift);
if (FLEXONENAND(this)) {
rgn = flexonenand_region(mtd, from);
from += mtd->eraseregions[rgn].erasesize;
} else
from += (1 << bbm->bbt_erase_shift);
}
return 0;
@@ -152,7 +158,7 @@ static int onenand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt)
uint8_t res;
/* Get block number * 2 */
block = (int)(offs >> (bbm->bbt_erase_shift - 1));
block = (int) (onenand_block(this, offs) << 1);
res = (bbm->bbt[block >> 3] >> (block & 0x06)) & 0x03;
MTDDEBUG (MTD_DEBUG_LEVEL2,
@@ -191,7 +197,7 @@ int onenand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd)
struct bbm_info *bbm = this->bbm;
int len, ret = 0;
len = mtd->size >> (this->erase_shift + 2);
len = this->chipsize >> (this->erase_shift + 2);
/* Allocate memory (2bit per block) */
bbm->bbt = malloc(len);
if (!bbm->bbt) {

4
drivers/mtd/onenand/onenand_uboot.c
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@@ -40,8 +40,10 @@ void onenand_init(void)
onenand_scan(&onenand_mtd, 1);
if (onenand_chip.device_id & DEVICE_IS_FLEXONENAND)
puts("Flex-");
puts("OneNAND: ");
print_size(onenand_mtd.size, "\n");
print_size(onenand_chip.chipsize, "\n");
#ifdef CONFIG_MTD_DEVICE
/*