Just a couple of questions.
How does the ACPI/MP/PIR Table support in SeaBIOS relate to what I already have in Coreboot ?
It's there for Qemu.
I note the comment text says that these options are for emulators (or Win32 ??)
Can I safely disable these options for linux only support ?
Yes. Make sure to set #define CONFIG_COREBOOT 1 and #define CONFIG_OPTION_ROMS_DEPLOYED 0 For your first test you could do DEPLOYED 1 since you are copying the VGA BIOS to 0xc0000 in coreboot. For the long term, though, it would be better to let SeaBIOS handle it all.
I also set #define CONFIG_DEBUG_SERIAL 1 and change the debug level.
Thanks, Myles