[U-Boot] U boot booting issues on soft reset

Wolfgang Denk wd at denx.de
Sat Aug 8 20:23:17 CEST 2009


Dear Alfred,

In message <528f13590908080634w6a0e143xf21bd50ff0a3b763 at mail.gmail.com> you wrote:
> 
> >> Either U-Boot does not perform a real processor reset on your
> > platform, and/or your system does not really reset all peripherals.
> THe issue of a reboot command sure is just a processor reset , it does
> not reset the peripherals including the NAND i guess.

That is by far not so sure. A reasonable hardware design will make
sure that a CPU reset will also caus eall peripherals, and of course
especially the boot device, to be reset, too.

> Could it be a problem with the NAND boot code. Or would it be in
> lowLevelINit. S for  our platform. But if that  would have been the
> case, it should not have gone till the point it starts uncompressing
> the kernel. as you see in my earlier email.

What can we say? We don't know anything about your platform...

Best regards,

Wolfgang Denk

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