> But a bootloader built as a payload could also be built to use BIOS
> interfaces. GRUB is one example of this.
Let us assume the following configuration:
FSP -> Coreboot -> Payload: GRUB2 -> Linux
No legacy interrupts, correct? So, what is this for the architecture? CSM? UEFI look alike?
I assume, the Linux image on the HDD/SSD was installed far before as CSM, so there is already existing MBR, and some CSM implemented legacy services (INTs) already exist, am I correct?
I assume UEFI installed Linux would NOT run, since GRUB2 will be not able to find MBR... I assume GRUB2 as payload to Coreboot assumes MBR/Legacy (by default) implementation.
Any comments on what I wrote here? ;-)