Could you comment on getting Linux up and running with the ODROID boards? I'm thinking of using one of them for a hardware project and even though I haven't really looked into it yet, it seemed to me that a full blown distro was not ready yet.
After that, it's just like every other rootfs. I focus on Gentoo, so other distros... I don't know, but they will have an Ubuntu image up soon.
There are no graphics until X though, so you're stuck with ssh or serial console until then.
Kernel sources come from the BSP download on hardkernel's site. Should be a tarball in there named kernel_4412.tar.gz