Although Intel's current spec[1] shows the OpRegion structure version
as being the top 16 bits of the field, Intel's Windows drivers
require the OpRegion structure version to be in the top 8 bits of
the field when not using a VGA BIOS (eg, NGI or GOP driver).
As the Linux i915 driver only checks that the version is >= 2,
there is no change in functionality there.
This change effectively matches Intel's implementation in TianoCore,
where the version is set to 0x0200 << 16.
[1] https://01.org/sites/default/files/documentation/skl_opregion_rev0p5.pdf
TEST: Boot Windows [8.1,10] in UEFI mode w/GOP graphics init and
Legacy mode with libgfxinit, observe Intel GPU driver functional.
Change-Id: Ic2903ee4829689ec4117aec93dce0b87cec6f313
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/22118
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
fd0a891ee9