nand_default_bbt and x8 large page nand devices

Nishanth Menon menon.nishanth at gmail.com
Mon Jan 5 15:39:09 EST 2009


On Mon, Jan 5, 2009 at 2:31 PM, Scott Wood <scottwood at freescale.com> wrote:
> Nishanth Menon wrote:
>>
>> I guess the real question could be: is this a bug in reality? Do all x8
>> large
>> page devices expect 1 byte bb marker or is it just micron?
>
> It's not so much a bug as just a wasted byte -- any good block should
> contain all FFs from the factory, so unless software chooses to use it for
> something else (or the controller insists on putting ECC there) it should be
> harmless to treat the bad block marker as if it were two bytes.
:( unfortunately we have a ROM code which insists on using the
offset[1] on x8 largepage nand for ecc data.
yes, as far as a wasted byte goes, it is fine, but functionality gets
hit on my SOC, hence the question.
Regards,
Nishanth Menon



More information about the linux-mtd mailing list