Hi Joan Jett, AFAIK silvermoon platform uses uboot as default bootloader and the processor is mainlined, you only need the chumby sources if you want to access some drivers like the top button.
My dev machine died and I need to do some work to make the sources & patches avaliable here, but I think its posible to build some kind of buildroot distro that boots in both silvermoon & falconwing platforms ( the same target in buildroot )
Most of linux distributions out there rely on udev to handle hotplug events, and udev needs a newer kernel = NOT WORKING FOR FALCONWING, I don't know if silvermoon kernel has devtmpfs implemented but it is necessary to boot the kernel with udev. Some clever people >> https://github.com/WarheadsSE/OX820-2.6-linux backported devtmpfs to an oxnas kernel in order to boot archlinuxarm with newer udev versions, I think it can be done for chumby kernels too, but for me buildroot + mdev mechanism works like a charm!
I'll post a video of my chumby mpd server here in a couple of days and expect to finish the sd card guide (barebox & kernel) in a few days too.
Lets hack our chumbies!