[U-Boot] Need help to get u-boot running on the taskit stamp9g20

[Markus Hubig]

Hello @all,

as part of my bachelor thesis I'm working with the stamp9g20 / portuxg20
board from taskit (http://www.taskit.de/produkte/stamp9g20/index.htm). I
have a patch for a older version (2010.somewhat) of u-boot to get it running
on this board, but this patch is not working anymore.

Now I'm in the process of adapting this patch to the new u-boot. Up to now
I can compile a u-boot.bin and download it to the board. But after starting up
the new u-boot I just see this on the serial port

---8<------------------------------------------
U-Boot 2012.04.01-00001-gadcb359-dirty (Jul 11 2012 - 19:24:58)

CPU: AT91SAM9G20
Crystal frequency:   18.432 MHz
CPU clock        :  396.288 MHz
Master clock     :  132.096 MHz
DRAM:  64 MiB
WARNING: Caches not enabled
NAND:  RomBOOT
---8<------------------------------------------

and the board is rebooting every some seconds. I'm not able to give it some
input via the keyboard. I think maybe there are just some small bits missing
but I'm a bit lost now ... maybe some of you can have a look and can give me
some advice. ;-)

I include the old patch (portuxg20.patch) and the three patches I made in this
email. My patches are based on u-boot v2012.04.01.

Thank you very much,

Markus Hubig
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