[U-Boot-Users] after a sw reset, u-boot hangs in relocate_code

Jerry Van Baren gerald.vanbaren at smiths-aerospace.com
Fri Mar 4 18:14:26 CET 2005

Jaka Močnik wrote:
> hello!
> I've ported U-Boot (1.1.2) over to a custom MPC8560 (PQ3) based board -
> it works well, except that after a sw reboot (from linux kernel or
> u-boot itself), it only gets to the part where it relocates itself to
> RAM and then hangs - the last debug output is 
> Relocating code to 07fd4000...
> and the famous
> Now running in RAM - U-Boot at: 07fd4000 never shows up.
> has anyone experienced similar problems? any hints on what to look at?
> regards,
>         jaKa

Welcome to the u-boot email list ;-)

In our previous exchange on the Linuxppc-embedded list, you disagreed 
with my suggestion (FAQ on u-boot hanging after relocation), and I tend 
to agree (I skipped over the _restart_ statement previous).

Given that it is a problem on restart, I would speculate you have a 
peripheral (ethernet is your #1 suspect) that isn't being shut down 
before you reset/reboot.  As a result, a packet comes in after you 
reboot and your peripheral (ethernet) DMAs the packet into memory in the 
middle of somewhere it doesn't belong.  Kabango.


More information about the U-Boot mailing list