[PATCH] mtd/gpmi : add BBT support

[Wolfram Sang]

CCing Marek, he can say more about the U-Boot side probably...

> > Bootloaders may also need to write to NAND. So, they need to share the
> Do you mean the uboot may write something to the NAND?
> Could you show me some more detail cases?

U-Boot has NAND support in mainline, for barebox it is work-in-progress.
Both can and do write to NAND (kernel, rootfs), because both have
established procedures to do so (and maybe don't want to rely on
third-party tools like kobs-ng).

> > share the same information then. To be on the safe side regardings
> The kobs-ng which burns the bootloader to the NAND will also burn the
> whole BBT
> to the NAND too.

Did it always do that? Or is a newer version needed?

> But if the bootloader can make some block bad, the BBT information
> becomes different.
> Does the bootloader have the feature to make some block bad?

Sure. If you are able to write NAND, you should be able to mark blocks
bad, too :)

Thanks,

   Wolfram

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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