there is a buildrom tree at openbios.org
use the co command for linuxbios but specify buildrom.
actually, the OLPC buildrom is generic enough at this point that we should be abe to use it with few mods. I extended it a bit and all we need is a set of pre-built .config files, one per mainboard, and a setting in the file. It is very close.
In fact I just used buildrom to build a linux-in-flash for the sun ultra40 workstation!
ash prompt in < 10 secs. most of that time is the fixed delays in the kernel ...
thanks
ron