Great, this is another big step in the right direction. It would still be helpful if you can post the details for this stick. You may also want to post the output of "git diff" for others who may want to try Richland on the F2A85-M.

At this point, you'll need to study the code and find out exactly where it is dying. There may be someone who can spot it quickly, but I'm unsure of exactly what the issue is. I do think the line "Initializing devices" may mean that this is related to the devicetree code.

It has successfully run the first part of AGESA, specifically initializing the memory controller, PCI-E, so you have a sort-of-working system.