[coreboot] [OT] What can I delete in commercial bios if I'm running Linux

[Kfir Lavi]

Hi,
I'm in an embedded Linux project, and the board is Intel based with AMI
Bios.
Currently the bios loads in 22sec, and we would like to get it to ~3sec.
I know that the commercial bios have roms that can be deleted.
What is safe to ask the board/bios manufacturer to delete from the bios.
Currently the bios has:
usb
vga,lvds
intel ethernet
sata
ide

Thanks for your help,
Kfir