[U-Boot-Users] 440EPX is not booting from 1Gb/128MB NAND flash

[Stefan Roese <sr@denx.de>]

Hi Nikhil,

On Monday 11 February 2008, Nikhil Gautam wrote:
> I bypassed the function nand_is_bad_block( ) and also my image is now
> padded correctly. But still the problem is that SPL doesn't copy the
> U-boot image correctly onto the RAM. It copies the first page of first
> block from NAND flash again and again.

Now this could be an indication for what is going wrong here.

> This must be because of some configuration of NDFC done by SPL because
> I can see that IPL copied the first 4K (2 pages) correctly from NAND
> flash to RAM. But there aren't many NDFC or NAND configuration
> parameter that I can change.
>
> Have anyone seen this kind of problem before?

No.

But as mentioned above, if you see the same 2k page multiple times, it seems 
that the addressing in nand_command() (nand_boot.c) is not correct for those 
2k page devices. And looking at nand_base.c you will notice two different 
implementations for nand_command:

nand_command() and
nand_command_lp()   (lp for Large Page)

I suggest you take a look at this and merge the needed changes into 
nand_boot.c

Best regards,
Stefan

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