From c83bab62b3657d97299c8368b6c610e4cbf994b6 Mon Sep 17 00:00:00 2001 From: Patrick Rudolph Date: Fri, 13 Dec 2019 12:16:06 +0100 Subject: acpi: Be more ACPI compliant when generating _UID * Add function to generate unique _UID using CRC32 * Add function to write the _UID based on a device's ACPI path ACPI devices that have the same _HID must use different _UID. Linux doesn't care about _UID if it's not used. Windows 10 verifies the ACPI code on boot and BSODs if two devices with the same _HID share the same _UID. Fixes BSOD seen on Windows 10. Change-Id: I47cd5396060d325f9ce338afced6af021e7ff2b4 Signed-off-by: Patrick Rudolph Reviewed-on: https://review.coreboot.org/c/coreboot/+/37695 Tested-by: build bot (Jenkins) Reviewed-by: Philipp Deppenwiese --- Documentation/acpi/index.md | 2 ++ 1 file changed, 2 insertions(+) (limited to 'Documentation/acpi/index.md') diff --git a/Documentation/acpi/index.md b/Documentation/acpi/index.md index 8add8db387..c378722018 100644 --- a/Documentation/acpi/index.md +++ b/Documentation/acpi/index.md @@ -2,6 +2,8 @@ This section contains documentation about coreboot on ACPI. +- [SSDT UID generation](uid.md) + ## GPIO - [GPIO toggling in ACPI AML](gpio.md) -- cgit v1.2.3