[coreboot] How to pass custom defined data from Coreboot to GRUB2

[Paul Menzel]

Dear Mohan,


Am Montag, den 03.10.2016, 11:06 +0000 schrieb Mohan Shanmuga Sundaram:
> I have a requirement to pass the state value of a GPIO (on Intel ATOM
> Baytrail SoC) from Coreboot to GRUB2. Based on this GPIO state, I
> would script the GRUB2 to configuration to select an alternative OS
> from the GRUB menu list. Is there a facility to pass this custom
> defined data from Coreboot to GRUB2?

I suggest to use CBTABLES for that. GRUB also can read that.


Thanks,

Paul


[1] grub-core/kern/i386/coreboot/cbtable.c


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