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authorPatrick Rudolph <patrick.rudolph@9elements.com>2024-03-16 09:27:58 +0100
committerElyes Haouas <ehaouas@noos.fr>2024-11-17 05:33:49 +0000
commitdf7561552f09c01b739ad65b490c4d7039cb7b6a (patch)
treec2fbfc9c51f1b321c4ea0ee754869596eeb79d31 /src/drivers/intel/gma/acpi
parentdcf2ef9b212696ee05272b208e418a21e8d48125 (diff)
drivers/intel/gma/acpi: Limit OpRegion size
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>
Diffstat (limited to 'src/drivers/intel/gma/acpi')
-rw-r--r--src/drivers/intel/gma/acpi/configure_brightness_levels.asl7
1 files changed, 5 insertions, 2 deletions
diff --git a/src/drivers/intel/gma/acpi/configure_brightness_levels.asl b/src/drivers/intel/gma/acpi/configure_brightness_levels.asl
index 3a097e336f..a35ffe3863 100644
--- a/src/drivers/intel/gma/acpi/configure_brightness_levels.asl
+++ b/src/drivers/intel/gma/acpi/configure_brightness_levels.asl
@@ -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