I successfully built a coreboot-v2 image with both SeaBIOS and gpxe. I concatenated the coreboot image, the video bios, and gpxe rom into one big image and wrote it to flash. I also told SeaBIOS how to deploy the roms:
#define OPTIONROM_BDF_1 0x0100 #define OPTIONROM_MEM_1 0xfffc0000 #define OPTIONROM_BDF_2 0x0048 #define OPTIONROM_MEM_2 0xfffcf800
It works!
Yes thats very good news! I will try to look into SATA issue if time permits.
Rudolf