[U-Boot] Debugging why my kernel won't start

[Wolfgang Denk]

Dear Rogan Dawes,

In message <4C6BAC5A.6060206 at dawes.za.net> you wrote:
>
> Thanks for the suggestion. It did make a slight difference in the boot
> logs. bootcmd uses the default (in flash) location for the ramdisk,

Actually it's a pretty significant difference, as for the first time
you actually see the kernel trying to access the ramdisk.

> > RAMDISK: Compressed image found at block 0
> > invalid compressed format (err=1)
> 
> So it seems that the ramdisk is getting corrupted somehow. And yet, it
> is fine using the vendor u-boot. It must be something that I am doing wrong.

Try copying the raw ramdisk image (i. e. without the U-Boot header) to
RAM, and try that one, i. e. something like

	=> cp.b ff9a0040 01600000 ...size...
	...
	=> bootm ff820000 1600000

Best regards,

Wolfgang Denk

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