[coreboot] Keyboard does not work in payload GRUB on Lenovo X60

[Paul Menzel]

Dear coreboot folks,

Testing the GRUB payload on the Lenovo X60 with coreboot from latest
master, the keyboard doesn’t work in GRUB.

GRUB is built with `make && make default_payload.elf`.

Can you confirm that problem, and do you know of a solution.

Using SeaBIOS, a delay of three to five seconds has to be set with the
file `etc/ps2-keyboard-spinup` in CBFS.

Thanks,

Paul