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drivers/intel/gma/acpi: Limit OpRegion size

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Limit the ACPI OpRegion to cover only MBOX3. This seems to fix
BSOD errors seen on Windows 10/11 as reported at [1].

1: https://ticket.coreboot.org/issues/327

Change-Id: Ia2affa799e5cd84c0a03330e0f78919755f0e8ac
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81295
Reviewed-by: Joel Linn <jl_coreboot@conductive.de>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
This commit is contained in:
Patrick Rudolph 2024-03-16 09:27:58 +01:00 • committed by Elyes Haouas
commit df7561552f
1 changed files with 5 additions and 2 deletions
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7
src/drivers/intel/gma/acpi/configure_brightness_levels.asl
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@ -10,8 +10,11 @@
Device (BOX3)
{
Name (_ADR, 0)
OperationRegion (OPRG, SystemMemory, ASLS, 0x2000)
/*
* Only cover MBOX3 since Windows 10/11 doesn't like
* when the full (MBOX4/MBOX5 as well) OpRegion is covered.
*/
OperationRegion (OPRG, SystemMemory, ASLS, 0x400)
Field (OPRG, DWordAcc, NoLock, Preserve)
{
// OpRegion Header