ARM: LPC32XX MLC NAND Bad Block Handling
Sebastian Huber
sebastian.huber at embedded-brains.de
Thu Jul 19 08:49:24 EDT 2012
Hello,
it seems that the LPC32XX MLC NAND driver uses nand_default_block_markbad() to
mark a block as bad. This function will use nand_do_write_oob() with
MTD_OPS_PLACE_OOB to write the bad block marker in the bad block itself. This
function will use chip->ecc.write_oob() to write the OOB which is
static int lpc32xx_write_oob(struct mtd_info *mtd, struct nand_chip *chip,
int page)
{
/* None, write_oob conflicts with the automatic LPC MLC ECC decoder! */
return 0;
}
Does this mean that the bad block mark is only present in the bad block table?
I think the driver should set NAND_BBT_NO_OOB_BBM to make this clear.
--
Sebastian Huber, embedded brains GmbH
Address : Obere Lagerstr. 30, D-82178 Puchheim, Germany
Phone : +49 89 18 90 80 79-6
Fax : +49 89 18 90 80 79-9
E-Mail : sebastian.huber at embedded-brains.de
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Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
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