[coreboot] SeaBIOS not running vga rom

[Joseph Smith]

Hello,
This may be a dumb question, but I was wondering, can I use SeaBIOS as a
payload without loading assembly blob roms?
I ask this because I am going to be running custom VGA code after VM86
excicutes the vga rom and returns back to coreboot. I don't think this
would be possible for SeaBIOS, because at that point it has already left
coreboot. So I would like to just use SeaBIOS as my payload to boot disks
only. Is this possible? If so what options do I need to define in SeaBIOS?