They're not supported yet, sorry. I haven't checked whether there are public datasheets. Do you want to work on support for this chipset?
I'm not sure what I could do to help on this. I've no idea when it comes to this sort of stuff. I could give it a go, if I knew what it was I needed to do.
The Super I/O should be supported, but we haven't actually tested that
code on real hardware, yet.
If you're inclined you can give it a try (check whether you get serial debugging output). Please note, that this is all you'll be able to achieve at the moment, you will _not_ be able to really boot your system as long as northbridge + southbridge don't work.
If I try it out, can I revert to my old BIOS if it doesn't work? Or is it a case of not actually flashing the BIOS, but running some sort of diagnostic? Again, I've no idea, I just came across this as I use Linux, and figured would be nice.
Regards
Ian