intel_iommu=igfx_off is needed on the Heads kernel command line for
memtest86+ to work. Without this parameter, the screen blanks when
memtest86+ starts testing.
This is unique to Librem 11, probably because it is the only device
using FSP GOP for graphics init in coreboot. (libgfxinit does not yet
support Jasper Lake.)
Signed-off-by: Jonathon Hall <jonathon.hall@puri.sm>
Add Librem 11 board.
Librem 11 uses coreboot graphics init, which is done with FSP GOP.
Set a custom keymap for the volume/power keys. Configure the volume
keys as up/down arrows (for navigation in fbwhiptail, and for shell
history in the Linux console). Configure the power key as Enter.
Signed-off-by: Jonathon Hall <jonathon.hall@puri.sm>