[U-Boot] problem with read only nanad

[U-Boot] problem with read only nanad

[alex889]

Hi,
I'm working on a system having 2 NAND chips,
the first one has the U-Boot and a basic firmware, and is read only,
and the second has a new firmware.
when the second chip is empty, the system should boot from the first chip.
but it gives me many errors, probably related to the fact that it's
readonly, 
does the u-boot tries to write something to the nand during startup?
how can i solve this issue?

thanks in advance
Alex
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[U-Boot] problem with read only nanad

[Scott Wood]

On Thu, Aug 27, 2009 at 12:32:50AM -0700, alex889 wrote:
> 
> Hi,
> I'm working on a system having 2 NAND chips,
> the first one has the U-Boot and a basic firmware, and is read only,
> and the second has a new firmware.
> when the second chip is empty, the system should boot from the first chip.
> but it gives me many errors, probably related to the fact that it's
> readonly, 
> does the u-boot tries to write something to the nand during startup?
> how can i solve this issue?

Depending on what the NAND controller driver requests, it could be trying
to create an on-chip bad block table.  If your flash is read only, then
do not set NAND_USE_FLASH_BBT in the options -- or if you want to use an
existing BBT but not create one if absent, provide a BBT description that
lacks the NAND_BBT_CREATE option.

If that's not it, then tell us which controller it is, and what sort of
errors you're getting.

-Scott