[U-Boot] I can not read Linux image from my nand flash

[Scott Wood]

On Fri, Nov 27, 2009 at 08:14:41PM +0800, Peter Pan wrote:
> My u-boot version is u-boot-2009-08.
> In my U-boot, after I entered "nboot 800000 0 0",
> the following messages shows:
> 
> Loading from NAND 1GiB 3,3V 8-bit, offset 0x0
>    Image Name:   Linux-2.6.22.sac.rd
>    Image Type:   PowerPC Linux Kernel Image (gzip compressed)
>    Data Size:    1045865 Bytes = 1021.4 kB
>    Load Address: 00000000
>    Entry Point:  00000000
> NAND read from offset ffffffff failed 0
> ** Read error
> 
> The image in nand is written in linux 2.6.22 using
> nandwrite -p /dev/mtd3 uImage
> This command works fine before.

What u-boot verison is "before"?  What platform?

Are you getting any build warnings about 64-bit printf, BTW?

> I looked into the source tree, and u-boot should read out
> the first block in my nand flash to show the information
> of my image. But, after that, U-boot just think all the following
> blocks are bad blocks, so it read failed.

Perhaps u-boot and your version of Linux disagree about NAND layout.

-Scott