Can't get freebsd running on an opteron board

Hello,

I bought myself an arima board on ebay, but I can't get it to boot any 
freebsd on it. It turns out to be a google board with a special google 
efi. picture: http://atrejus.net/arima/arima-gr.jpg other pictures: 
http://interhost.hu/stuff/pics/obey/ I can boot debian with acpi=off 
without trouble, even xen. Bsds die at btx loader part right after  
"Consoles: internal video/keyboard". I've tried 32bit 4.10 5.2 6.3 7.0 
7.2 8.0rc 8.0 64bit 7.2 8.0 even current but can't get past that spot. I 
can't even get any debug information, because It never reaches a point 
to get any. Any input would be nice and I can give info from linux if 
that helps.

Thanks in advance,
zsozso