Hi
For me, Coreboot works on an Asus F2A85-M and A88XM-e. It lacks the CPU and MB temperature in LM sensors, there are negative values and the fan control does not work. I have not activated Hudson blobs and leave all settings, except for the insertion of onboard graphic file and identifier. Which settings in Menuconfig are the temperatures pass properly?
Thanks for good tips 
Gottfried