I followed the tutorial at http://www.plugcomputer.org/plugwiki/index.php/Das_U-boot_plug_support
and successfully built a u-boot.kwb image (compiled it in the plug itself).
But when I load it via tftp (tftp 0x640000 u-boot.kwb), and then type in 'go 0x64000', I get a "data abort" crash and the plug resets! So, I'm guessing this is not a good build.
What can I be doing wrong?