#include <linux/mtd/onenand.h>
#include <linux/mtd/compatmac.h>
-extern int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf);
+extern int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
+ struct mtd_oob_ops *ops);
/**
* check_short_pattern - [GENERIC] check if a pattern is in the buffer
int startblock;
loff_t from;
size_t readlen, ooblen;
+ struct mtd_oob_ops ops;
printk(KERN_INFO "Scanning device for bad blocks\n");
- len = 1;
+ len = 2;
/* We need only read few bytes from the OOB area */
scanlen = ooblen = 0;
startblock = 0;
from = 0;
+ ops.mode = MTD_OOB_PLACE;
+ ops.ooblen = readlen;
+ ops.oobbuf = buf;
+ ops.len = ops.ooboffs = ops.retlen = ops.oobretlen = 0;
+
for (i = startblock; i < numblocks; ) {
int ret;
for (j = 0; j < len; j++) {
- size_t retlen;
-
/* No need to read pages fully,
* just read required OOB bytes */
- ret = onenand_do_read_oob(mtd, from + j * mtd->writesize + bd->offs,
- readlen, &retlen, &buf[0]);
+ ret = onenand_bbt_read_oob(mtd, from + j * mtd->writesize + bd->offs, &ops);
- if (ret)
- return ret;
+ /* If it is a initial bad block, just ignore it */
+ if (ret == ONENAND_BBT_READ_FATAL_ERROR)
+ return -EIO;
- if (check_short_pattern(&buf[j * scanlen], scanlen, mtd->writesize, bd)) {
+ if (ret || check_short_pattern(&buf[j * scanlen], scanlen, mtd->writesize, bd)) {
bbm->bbt[i >> 3] |= 0x03 << (i & 0x6);
printk(KERN_WARNING "Bad eraseblock %d at 0x%08x\n",
i >> 1, (unsigned int) from);
* marked good / bad blocks and writes the bad block table(s) to
* the selected place.
*
- * The bad block table memory is allocated here. It must be freed
- * by calling the onenand_free_bbt function.
+ * The bad block table memory is allocated here. It is freed
+ * by the onenand_release function.
*
*/
int onenand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd)
int len, ret = 0;
len = mtd->size >> (this->erase_shift + 2);
- /* Allocate memory (2bit per block) */
- bbm->bbt = kmalloc(len, GFP_KERNEL);
+ /* Allocate memory (2bit per block) and clear the memory bad block table */
+ bbm->bbt = kzalloc(len, GFP_KERNEL);
if (!bbm->bbt) {
printk(KERN_ERR "onenand_scan_bbt: Out of memory\n");
return -ENOMEM;
}
- /* Clear the memory bad block table */
- memset(bbm->bbt, 0x00, len);
/* Set the bad block position */
bbm->badblockpos = ONENAND_BADBLOCK_POS;
struct onenand_chip *this = mtd->priv;
struct bbm_info *bbm;
- this->bbm = kmalloc(sizeof(struct bbm_info), GFP_KERNEL);
+ this->bbm = kzalloc(sizeof(struct bbm_info), GFP_KERNEL);
if (!this->bbm)
return -ENOMEM;
bbm = this->bbm;
- memset(bbm, 0, sizeof(struct bbm_info));
-
/* 1KB page has same configuration as 2KB page */
if (!bbm->badblock_pattern)
bbm->badblock_pattern = &largepage_memorybased;