[U-Boot-Users] MTD update?

[Stefan Roese]

Hi William,

On Wednesday 17 October 2007, William Juul wrote:
> On two custom designs (ARM and PPC based) we are running YAFFS on NAND
> devices in U-boot and Linux.
>
> We had problems configuring YAFFS/MTD in such a way that we could use
> the same partition in both U-boot and Linux. Additionaly we could not
> find support for 4KB pages in the current MTD implementation in
> U-boot. We also ran into (easily fixable) problems since nand_ids.c
> contained two entries with the same ID.
>
> Thus, we upgraded the MTD files in U-boot by using the corresponding
> files in Linux 2.6.22.1, which we used at the time). This was a rather
> large change of u-boot source, but it solved all problems we had with
> NAND. The patch touched several files in drivers/nand, include,
> include/linux, include/linux/mtd and common. The patch has a total
> size of >300KB.
>
> Currently this patch is based on 1.2.0 and it will require some work
> before we submit a patch:
>  - base the patch on 1.3.0
>   - MAKEALL ppc/arm is currently breaking for some configurations
>  - some code clean-up
>
> We do not have the resources (time/HW) to test this patch on anything
> else than our two custom boards. Thus we will have to rely on help
> from the community after submitting the patch..

I'll be glad to review the code (if time permits) and test it on some of my 
platforms (PPC based).

> Comments?

I think this is a necessary move. A lot changed in the Linux MTD code, since 
it was last ported from Linux to U-Boot. So I really appreciate your effort 
here.

Thanks.

Best regards,
Stefan

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