[U-Boot-Users] U-Boot-1.2.0 - NAND bad block management

[Vaibhav Hiremath]

Hi,


Can any one help me out in this issue?

Thanks in advance.


Thanks,
Vaibhav

On 10/3/07, Vaibhav Hiremath <hvaibhav at gmail.com> wrote:
> Hi,
>
> I have ported  U-Boot-1.2.0 to ARM11176 core, which supports NAND
> booting (big page NAND device).
>
> I have one query -
> How U-boot-1.2.0 handles bad block?
> As I understand at the booting time U-Boot-1.2.0 scans whole NAND
> device and maintains BBT. This absolutely fine with me, but what will
> happen if read operation fails after that, say page read has generated
> ECC error. U-Boot-1.2.0 doesn't mark this block as a bad block.
>
> Is this some kind of loop hole in U-Boot NAND support? Since there is
> no other cause appart from Write and Erase fail which will mark the
> blcok as a bad.
> Ideally it should mark that block as a bad for ECC error, since it's
> failing of read operation.
>
> Thanks in advance.
>
> Thanks,
> Vaibhav
>