* Add a function to return CPU platform ID bits
* Add a function to return platform type
** Platform id is 4 on Lenovo T430 (mobile)
** Platform id is 1 on HP8200 (desktop)
* Use introduced method to handle platform specific code
* Use enum for platform type
* Report platform ID
Change-Id: Ifbfc64c8cec98782d6efc987a4d4d5aeab1402ba
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/22530
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Implement caching like it's done with pmbase.
Change-Id: I26d56a9ff1a8d6e64c164f36e23b846b8b459380
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/27664
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Add internal graphics device 00.01.00 to the ACPI tables so that the
ACPI PCI option ROM save functions have a proper scope to save the
ROM to.
BUG=b:111697181
TEST=Check coreboot log doesn't have "PCI: 00:01.0: Missing ACPI scope"
and check _ROM method is added in the SSDT1.
Change-Id: I2c9ef8d9dff76805b1fcde2ccceef958a5b53b4f
Signed-off-by: Marc Jones <marcj303@gmail.com>
Reviewed-on: https://review.coreboot.org/27653
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Additional diagnostic information about the EC and the most recent
reasons why it has reset the AP are read out and logged via printk.
This may aid in debugging spurious hangs and/or resets on the AP by
providing traceability to the EC when it triggered the reset. Merely
knowing that the EC was also recently reset may provide valuable
intelligence. See also https://crrev.com/c/1139028.
Change-Id: Ie6abe645d5acefb570b9f6a3c4a4b60d5bcd63cd
Signed-off-by: Jonathan Brandmeyer <jbrandmeyer@chromium.org>
Reviewed-on: https://review.coreboot.org/27621
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Update ec_commands.h to be a verbatim copy of upstream, except retain
the complete copyright notice found in coreboot's copy. Upstream refers
to a file not present in coreboot.
Change-Id: Ic3daa09ffd83c089b6874e0ea9aab8aa60016775
Signed-off-by: Jonathan Brandmeyer <jbrandmeyer@chromium.org>
Reviewed-on: https://review.coreboot.org/27620
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Use new PMBASE API functions in common SMI handler.
Change-Id: I4c64233ecdb8c1e28b319d84149f34bc8f1e4b97
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/27281
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Add common functions to manipulate PMBASE IO window.
TODO:
* Use the new functions to manipulate register in PMBASE.
* Get rid of duplicated get_pmbase()
Change-Id: I3b454434ade560fb056b1fc0afe9541df93e14dd
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/27278
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Add support for WWAN detection on SNB/IVB boards that have
schematics or are available for testing.
Tested on Lenovo T430.
Change-Id: Ie96b2593971d49703eb747ab19f512be890d9c12
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/20984
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Change-Id: Iefeb47bca3676a1f807b7a66b74a07491e351362
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/27632
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This patch sets SPI flash related configs and inits SPI bus 1 to
support SPI NOR flash.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Kukui
Change-Id: I1a18a456f41a7c7daec954e961c9fbee3650493d
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/27499
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This patch implements SOC-specific code of mt8183 and link the common
code to support SPI bus.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Kukui
Signed-off-by: mengqi.zhang <mengqi.zhang@mediatek.com>
Change-Id: I544e850299c74861313c2425721479fe5b91639e
Reviewed-on: https://review.coreboot.org/27498
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Refactor SPI code which will be reused amon similar SOCs.
BUG=b:80501386
BRANCH=none
TEST=Boots correctly on Elm
Change-Id: If5a6c554dc8361e729cf5c464325b97b2bfb7098
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/27497
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Since we move mtk_mmu_init() from bootblock to decompressor, we don't
need to build mmu_opertations.c in bootblock and we don't need to
include <soc/mmu_operations.h> in bootblock.c.
BUG=b:80501386
TEST=manually flashed into kukui and boots into romstage.
Change-Id: I58f97ac1705e4dfde5e2d497d9bec33a1d8d17c2
Signed-off-by: Tristan Shieh <tristan.shieh@mediatek.com>
Reviewed-on: https://review.coreboot.org/27655
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Since ops was passed as override in the pnp_dev_info struct, the generic
pnp_ops that was passed to pnp_enable_devices was never used.
Change-Id: Ic35a232a9867936d3d84aa275ae50e3e3dd9bf97
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/27396
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Since ops was passed as override in the pnp_dev_info struct, the generic
pnp_ops that was passed to pnp_enable_devices was never used.
Change-Id: I59eb60efeefcdbe8b2dc08e17453cf95bdfd39b1
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/27395
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Since ops was passed as override in the pnp_dev_info struct, the generic
pnp_ops that was passed to pnp_enable_devices was never used.
Change-Id: I10e2c6da0043eb291a8c6266b251054dbe599653
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/27393
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Add audio codec definitions in devicetree, which were accidentally
dropped when upstreaming
Test: build/boot Caroline with GalliumOS 3.0a2, verify working audio.
Change-Id: I707b93c83f773cde2108b75ec550a15e5566d974
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/27626
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Remove duplicate FMCN package for I2C2, since already generated by
the devicetree-linked generic i2c driver. This fixes an ACPI parsing
error which resulted in the touchpad and touchscreen being non-functional.
Test: build/boot Caroline with GalliumOS 3.0a2, verify touchpad and
touchscreen functioning properly, no ACPI errors in dmesg.
Change-Id: I68315daf087aef0fc51411605b054e6322d5d7f8
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/27624
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This change provides override GPIO table for variant phaser depending
upon the board id. Additionally, early_gpio_table is also provided for
phaser since EN_PP3300_WLAN needs to be handled differently based on
board id.
BUG=b:111743717
TEST=Verified that GPIO configuration for the override GPIOs is
different than before with this change.
Change-Id: I4d2e829e1b886299442c17cecc069854b742b43c
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/27642
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This change updates mainboard_init to call
gpio_configure_pads_with_override instead of gpio_configure_pads to
allow variants to provide overrides for the GPIO config table provided
by the baseboard.
BUG=b:111743717
TEST=Verified on phaser that GPIO config with and without this change
is the same.
Change-Id: I494a950100e5ec82504d652ff6e8a75746456d1f
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/27641
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This function adds support for gpio_configure_pads_with_override
which:
1. Takes as input two GPIO tables -- base config table and override
config table
2. Configures each pad in base config by first checking if there is a
config available for the pad in override config table. If yes, then
uses the one from override config table. Else, uses the base config to
configure the pad.
This is done to allow sharing of GPIO tables across baseboard-variants
for various boards i.e. Each board can have a base config table which
is provided by the baseboard and an optional override config table
that can be provided by a variant to configure certain GPIOs
differently. It is helpful when the variant GPIO diff list is not very
huge compared to the baseboard.
BUG=b:111743717
TEST=Verified that the GPIO config for phaser is same with and without
this change.
Change-Id: I1c5dc72c8368957201ab53d2e8398ff861341a4c
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/27640
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The next build for phaser swapped the gpio for the touchscreen
enable. In order to support previous builds the devicetree needs
to be updated at runtime based on board revision id.
BUG=b:111808427,b:111743717
TEST=built
Change-Id: I45ef05ea0b991d04d5bf410cd7a175913bf0bf5d
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/27638
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The variants of the octopus family have their own schedule and needs
for modifying settings based on the phase of the build schedule while
also needing to maintain support for previous builds. Therefore, utilize
the SoC callback, mainboard_devtree_update(), but just callback into
the newly introduced variant_update_devtree(). The indirection allows
for the ability to move the call around earlier than the
mainboard_devtree_update() if needed while maintaining consistency in
the naming of the variant API.
BUG=b:111808427,b:111743717
TEST=built
Change-Id: If1c2f60cabe65b5f1c6a04dd60e056e50c4993df
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/27637
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Add a function, dev_bus_each_child(), which walks through all the
children for a given bus of a device. This helper allows one to
walk through all the children of a given device's bus.
BUG=b:111808427,b:111743717
TEST=built
Change-Id: Iedceb0d19c05b7abd5a48f8dc30f85461bef5ec6
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/27636
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
The variant_board_id() API was never used on octopus because all
boards in the octopus family used the EC to get board id, i.e. they
all use EC_GOOGLE_CHROMEEC_BOARDID. Therefore, remove the code
and declarations so as not to cause confusion.
BUG=b:111808427,b:111743717
TEST=built
Change-Id: I4f9a24b46dd4262120075d3d42daf22015a3dd50
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/27635
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This patch makes it possible to enter the config mode of the super IO chip, so
that changes can be made to the configuration registers.
Change-Id: I7e31eaf217b3af2226c1e7d2f14f2ef7b0d7ddbe
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/27392
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
Since ops was passed as override in the pnp_dev_info struct, the generic
pnp_ops that was passed to pnp_enable_devices was never used.
Change-Id: Id09c6cffb9a0cbbd9189c18801121449c9504422
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/27394
Reviewed-by: Alexander Couzens <lynxis@fe80.eu>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The bus width has to be encoded where the lower 3 bits are the bus width
in multiple of 8 and the following two bits give the error checking
bits in multiple of 8.
Hardcode to 64 bit as done on haswell.
TODO: Make it dynamic once there's ECC support.
Change-Id: I3b83a098205455b1c820d0436c6984938f261466
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/22261
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
On desktop boards the PPD bit of MRS register MR0 is set and thus
DLL_Off mode shouldn't be used, as enforced by datasheet
2nd-gen-core-family-mobile-vol-2-datasheet chapter 2.17.1.
Change-Id: Ic42f2ff3e719636be67b00fa37155939cd2e17de
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/22260
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Descriptions are taken from the files themselves or READMEs. Description
followed by a space with the language in marked up as code.
Change-Id: I5f91e85d1034736289aedf27de00df00db3ff19c
Signed-off-by: Tom Hiller <thrilleratplay@gmail.com>
Reviewed-on: https://review.coreboot.org/27563
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
The used super IO is selected in Kconfig depending on the board variant, so use
the selected super IO instead of the board variant directly.
Change-Id: I8421e7c9b1f9ca875c9291f4105c3c20726adfd0
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/27629
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Libgfxinit provides a better alternative to the native C init. While libgfxinit
mandates an ada compiler, we want to encourage use of it since it is in much
better shape and is actually maintained.
This way libgfxinit also gets build-tested by Jenkins.
Change-Id: I9228fa7eadfe2a827c1f4de9d6710b60d3f1b121
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27515
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Untested but expected to work.
Change-Id: I5a77b7a4343f108f46cf1f97a94e61e88eecb417
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27514
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
MT8183 only allows booting from eMMC, so we have to do eMMC emulation
from an external source, for example EC, which makes the size of
bootblock very important.
A fully functional bootblock (that can boot into verstage or romstage)
is about 38000 bytes. If self decompression (CONFIG_COMPRESS_BOOTBLOCK)
is enabled, only 25088 (66%) bytes are needed.
Inspired from crosreview.com/1070018.
BUG=b:80501386
TEST=manually flashed into kukui and boots into romstage.
Change-Id: I7a739866a4ea3bcafe2ff7b9e88d5ed00f3f3e40
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/27599
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
These values are Intel recommended.
IccMax = 28A
DC and AC LL = 4mOhms
Pl2 = 18w
BUG=b:79666828
BRANCH=none
TEST=Enabled p-states with patch
Change-Id:I82d1516998cc26b789faa5d4e897feb06dc06020 and then
"emerge-nocturne depthcharge coreboot chromeos-bootimage", flash spi
image onto nocturne, boot to kernel and verify device stays alive and
responsive for several minutes without locking up.
Change-Id: I4c67c6a095aecc158e529a6b393baf03ec358a3d
Signed-off-by: Pratik Prajapati <pratikkumar.v.prajapati@intel.com>
Reviewed-on: https://review.coreboot.org/27175
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This patch enables p-states for nocturne which was disabled by commit
de31587a (mb/google/poppy/variants/nocturne: disable p-states). p-states
feature was disabled as a temporary work-around as system was getting
hung while booting up. Now with IMVP7 firmwware turning and hardware
rework the issue is not seen, so its safe to enable p-states.
BUG=b:79666828
BRANCH=none
TEST=cherry picked Change-Id: I4c67c6a095aecc158e529a6b393baf03ec358a3d
patch and then "emerge-nocturne depthcharge coreboot chromeos-bootimage"
, flash spi image onto nocturne, boot to kernel and verify device stays
alive and responsive for several minutes without locking up.
Change-Id: I82d1516998cc26b789faa5d4e897feb06dc06020
Signed-off-by: Pratik Prajapati <pratikkumar.v.prajapati@intel.com>
Reviewed-on: https://review.coreboot.org/27257
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
With python3 the split method can operate on strings while check_output
generates bytestrings.
Change-Id: I7b455c56e8195f0ecfbe5e360ac161c176f00115
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27630
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
python-recommonmark is need for sphinx to be able to hande the markdown
documentation.
Change-Id: I9513ab4bdc753e0350754d9869239ea833893af9
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27631
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Add Kconfig options to not build the Arm Trusted Firmware, but use
a precompiled binary instead. To be used on platforms that do not
have upstream Arm Trusted Firmware support and useful for development
purposes.
It is recommended to use upstream Arm Trusted Firmware where possible.
Change-Id: I17954247029df627a3f4db8b73993bd549e55967
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/27559
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
For unused pins in octopus baseboard, configure them as GPIO input
and use the default termination. For the pins where board has an
external termination, remove SOC's internal termintation.
BUG=b:110654510
Change-Id: I67ec62913b0ef47105289838218f5d74c004223c
Signed-off-by: Shamile Khan <shamile.khan@intel.com>
Reviewed-on: https://review.coreboot.org/27183
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
As per the ACPI specification, there are two types of power button
devices:
1. Fixed hardware power button
2. Generic hardware power button
Fixed hardware power button is added by the OSPM if POWER_BUTTON flag
is not set in FADT by the BIOS. This device has its programming model
in PM1x_EVT_BLK. All ACPI compliant OSes are expected to add this
power button device by default if the power button FADT flag is not
set.
On the other hand, generic hardware power button can be used by
platforms if fixed register space cannot be used for the power button
device. In order to support this, power button device object with HID
PNP0C0C is expected to be added to ACPI tables. Additionally,
POWER_BUTTON flag should be set to indicate the presence of control
method for power button.
Chrome EC mainboards implemented the generic hardware power button in
a broken manner i.e. power button object with HID PNP0C0C is added to
ACPI however none of the boards set POWER_BUTTON flag in FADT. This
results in Linux kernel adding both fixed hardware power button as
well as generic hardware power button to the list of devices present
on the system. Though this is mostly harmless, it is logically
incorrect and can confuse any userspace utilities scanning the ACPI
devices.
This change gets rid of the generic hardware power button from APL
and relies completely on the fixed hardware power button.
BUG=b:110913245
TEST=Verified that fixed hardware power button still works as expected
on octopus.
Change-Id: I86259465c6cfaf579dd7dc3560b4c9e676b80b55
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/27273
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
As per the ACPI specification, there are two types of power button
devices:
1. Fixed hardware power button
2. Generic hardware power button
Fixed hardware power button is added by the OSPM if POWER_BUTTON flag
is not set in FADT by the BIOS. This device has its programming model
in PM1x_EVT_BLK. All ACPI compliant OSes are expected to add this
power button device by default if the power button FADT flag is not
set.
On the other hand, generic hardware power button can be used by
platforms if fixed register space cannot be used for the power button
device. In order to support this, power button device object with HID
PNP0C0C is expected to be added to ACPI tables. Additionally,
POWER_BUTTON flag should be set to indicate the presence of control
method for power button.
Chrome EC mainboards implemented the generic hardware power button in
a broken manner i.e. power button object with HID PNP0C0C is added to
ACPI however none of the boards set POWER_BUTTON flag in FADT. This
results in Linux kernel adding both fixed hardware power button as
well as generic hardware power button to the list of devices present
on the system. Though this is mostly harmless, it is logically
incorrect and can confuse any userspace utilities scanning the ACPI
devices.
This change gets rid of the generic hardware power button from all
google mainboards and relies completely on the fixed hardware power
button.
BUG=b:110913245
TEST=Verified that fixed hardware power button still works correctly
on nautilus.
Change-Id: I733e69affc82ed77aa79c5eca6654aaa531476ca
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/27272
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Philipp Deppenwiese