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>
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>
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>
* 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>
Felix Held