I found the website of linux from scratch
http://trac.cross-lfs.org/
on this site they have a free book wich explains how to build a cross compiled os:D
as far as I can see, its not yet written for mipsel, but i guess it'll be possible to create your own linux from scratch:)
I always liked the idea of a complete linux on an asus router, since olegs firmware isn't going that far, and there are a lot of limitations:(
might come handy of one of my future projects:p

