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2023-08-22Documentation/acpi: add Windows-specific documentationFelix Held
When using the Windows fast startup mechanism which is enabled by default, Windows will use a cached version of the ACPI tables during normal boots after a clean shutdown. Since I've run into this issue and spent quite a bit of time debugging the wrong issue due to this, better document this possibly unexpected behavior. Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Change-Id: Ia9e65f6a3aff13fa54abe68c8f5fcbf9bc6efc1a Reviewed-on: https://review.coreboot.org/c/coreboot/+/77354 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Paul Menzel <paulepanter@mailbox.org> Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
2023-02-17Documentation/acpi: Add links to ACPI specificationElyes Haouas
Change-Id: I31250a914753136bc5d303e7ebccb3525cce0d86 Signed-off-by: Elyes Haouas <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/73034 Reviewed-by: Felix Singer <felixsinger@posteo.net> Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2022-09-01Documentation: Move devicetree documentationMarc Jones
Move devicetree.md from acpi/ to getting_started/. The devicetree has nothing to do with ACPI and getting_started has the most similar information about coreboot. Change-Id: I873b293f036a9e3bcdc98135386f9158c645513c Signed-off-by: Marc Jones <marc@marcjonesconsulting.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/66916 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2020-03-23acpi: Change Processor ACPI Name (Intel only)Christian Walter
The ACPI Spec 2.0 states, that Processor declarations should be made within the ACPI namespace \_SB and not \_PR anymore. \_PR is deprecated and is removed here for Intel CPUs only. Tested on: * X11SSH (Kabylake) * CFL Platform * Asus P8Z77-V LX2 and Windows 10 FWTS does not return FAIL anymore on ACPI tests Tested-by: Angel Pons <th3fanbus@gmail.com> Change-Id: Ib101ed718f90f9056d2ecbc31b13b749ed1fc438 Signed-off-by: Christian Walter <christian.walter@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37814 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2020-01-09acpi: Be more ACPI compliant when generating _UIDPatrick Rudolph
* 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 <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37695 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
2019-12-09Documentation: Move ACPI documentation in a subindexArthur Heymans
Change-Id: I17c5263674b805a73d98aaa3e7090083905e37ef Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37242 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>