Commit 36b81af (spi: Pass pointer to spi_slave structure in
spi_setup_slave) changes the way spi_setup_slave handles the spi_slave
structure. Instead of expecting spi controller drivers to maintain
spi_slave structure in CAR_GLOBAL/data section, caller is expected to
manage the spi_slave structure. This requires that spi_flash drivers
maintain spi_slave structure and flash probe function needs to make a
copy of the passed in spi_slave structure.
This change fixes the regression on Lenovo X230 and other mainboards.
Change-Id: I0ad971eecaf3bfe301e9f95badc043193cc27cab
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17728
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Iru Cai <mytbk920423@gmail.com>
These headers & comments indicating a lack of functionality don't help
anything. We discourage copyrights and licenses on empty files, so
just clear these.
Change-Id: Id2ab060a2726cac6ab047d49a6e6b153f52ffe6d
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/17657
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>
Combine existing boards google/falco and google/peppy with new
ChromeOS devices leon and wolf, using their common reference board
(slippy) as a base.
Chromium sources used:
firmware-falco_peppy-4389.81.B d7703cac [falco: Add support for Samsung...]
firmware-leon-4389.61.B ea1bf55 [haswell: Enable 2x Refresh Mode]
firmware-wolf-4389.24.B 7c5a9c2 [Wolf: haswell: Add small delay before...]
Additionally, some minor cleanup/changes were made:
- I2C devices set to use ACPI (vs PCI) mode
- I2C device ACPI entries adjusted as per above
- I2C devices set to use level (vs edge) interrupt triggering
- XHCI finalization enabled in devicetree
- HDA verb entries use simplified macro entry format
Existing google/falco and google/peppy boards will be removed in a
subsequent commit.
Variant setup modeled after google/beltino
Change-Id: I087df5f98c1bb4ddd0ab24ee9ff786a9d38d87be
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/17621
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
No need for these boards to exist separately once included as
variants under google/slippy
Change-Id: I52a476ceaadf50487d6fe21e796d7844f946d8b3
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/17622
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Follow on patch to clean up the previous retry code.
Previous patches:
coreboot commit 079b5c65
(rockchip/rk3399: display: Retry edp initialization if it fails)
cros commit 28c57a6e
(rockchip/rk3399: display: retry edp initialization if edp initial fail)
- Reduce the jumping around via goto statements
- Break the retry code out into a separate function that also
prints the error messages.
BRANCH=gru
BUG=chrome-os-partner:60150
TEST=Rebuild Kevin and Gru
Change-Id: I3b6cf572073e4dcac83da09621bafde179af2613
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/17642
Tested-by: build bot (Jenkins)
Reviewed-by: Julius Werner <jwerner@chromium.org>
Split raminit.c into smaller parts. Move all functions that will
be used by chip-specific code into raminit_common.c.
The chip-specific changes includes new configuration values
for IvyBridge and 100Mhz reference clock support, including new
frequencies.
No functionality is changed.
Tested on Lenovo T420.
Change-Id: If7bb5949f4b771430f3dba1b754ad241a7e8426b
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/17604
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
1. Define a new structure spi_ctrlr that allows platforms to define
callbacks for spi operations (claim bus, release bus, transfer).
2. Add a new member (pointer to spi_ctrlr structure) in spi_slave
structure which will be initialized by call to spi_setup_slave.
3. Define spi_claim_bus, spi_release_bus and spi_xfer in spi-generic.c
which will make appropriate calls to ctrlr functions.
BUG=chrome-os-partner:59832
BRANCH=None
TEST=Compiles successfully
Change-Id: Icb2326e3aab1e8f4bef53f553f82b3836358c55e
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17684
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
For spi_setup_slave, instead of making the platform driver return a
pointer to spi_slave structure, pass in a structure pointer that can be
filled in by the driver as required. This removes the need for platform
drivers to maintain a slave structure in data/CAR section.
BUG=chrome-os-partner:59832
BRANCH=None
TEST=Compiles successfully
Change-Id: Ia15a4f88ef4dcfdf616bb1c22261e7cb642a7573
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17683
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
1. Use size_t instead of unsigned int for bytes_out and bytes_in.
2. Use const attribute for spi_slave structure passed into xfer, claim
bus and release bus functions.
BUG=chrome-os-partner:59832
BRANCH=None
TEST=Compiles successfully
Change-Id: Ie70b3520b51c42d750f907892545510c6058f85a
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17682
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Add support for Kaby Lake RVP7 board
* Add RVP7 board support in Kconfig
* Override default descriptor and ME binary paths in Kconfig
since those binaries will differ for RVP3 and RVP7
* Add RVP7 board name in board_info.txt and Kconfig.name
* Add devicetree.cb for RVP7 in the variants path
* Add gpio.h for RVP7 in variants/include/variant path
* Made board specific code for retrieving spd, i.e., in RVP7
there is non-soldered DIMMs, so SPD is read through smbus,
unlike RVP3 where memory DIMMs are soldered down with board.
Hence for RVP3, the spd binaries will be fixed and can be
kept as binary file in cbfs.
BUG=none
BRANCH=none
TEST=Built and boot Kaby Lake RVP7
Change-Id: I6f3d17d857bad1b5cf39f0bc900c760fee72da48
Signed-off-by: Barnali Sarkar <barnali.sarkar@intel.com>
Reviewed-on: https://review.coreboot.org/17637
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
TRAINING, not TARINING.
BUG=none
BRANCH=none
TEST=still builds
Change-Id: I8b7ffd0f0544a58865865a8b09d9c153db9c2674
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: b1ea846ce1ffd654d7d34c2a1d43b0fddbd4ae32
Original-Change-Id: I4940279ed7217cc20fe29c8b3603d1853acbfc5e
Original-Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/411801
Original-Commit-Ready: Patrick Georgi <pgeorgi@chromium.org>
Original-Tested-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Reviewed-by: Martin Roth <martinroth@chromium.org>
Reviewed-on: https://review.coreboot.org/17677
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
With addition of new features in VBT its size got increased
more than 6k and was unable to pass using mailbox 4 hence pass
using mailbox 3 to kernel.
BRANCH=none
BUG=chrome-os-partner:60026
TEST=firmware screen and Chrome OS screen should come up.
Change-Id: I359cf9bc402881161c9623cada689496716e04a5
Signed-off-by: Abhay Kumar <abhay.kumar@intel.com>
Reviewed-on: https://review.coreboot.org/17585
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Provide the rise and fall times for the i2c buses and let the
library perform the necessary calculations for the i2c
controller registers instead of manually tuning the values.
BUG=chrome-os-partner:58112
BRANCH=master
TEST=emerge-pyro coreboot
Change-Id: I68be9b96dc731eb0084ee5e15921866818637e73
Signed-off-by: Kevin Chiu <Kevin.Chiu@quantatw.com>
Reviewed-on: https://review.coreboot.org/17652
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Independent of Board DMIC configuration, add all DMIC points
i.e. add DMIC-1ch, DMIC-2ch, DMIC-4ch endpoints.
This allows flexibility to userspace to open capture devices as needed.
This is a temporary fix; once upper layers support choosing
particular channels from 4-ch PCM stream, we will limit exposing only
DMIC-4ch endpoint.
BUG=chrome-os-partner:60444
BRANCH=none
TEST=Verify All DMIC blobs are included
Change-Id: I9729a3570c0668f3da4e7986291ebad6fe1de47a
Signed-off-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Reviewed-on: https://review.coreboot.org/17660
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
As per guidelines CPU security level should be dropped before OS start,
so that certain MSRs are locked out. Drop privilege levels on all logical
CPUs.
BUG=chrome-os-partner:60454
TEST=iotools rdmsr x 0x120, make sure bit 6 is set, rdmsr x 0x121 results
in io error.
Change-Id: I67540f6da16f58b822db9160d00b7a5e235188db
Signed-off-by: Andrey Petrov <andrey.petrov@intel.com>
Reviewed-on: https://review.coreboot.org/17665
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
Currently we enable ACPI PM timer emulation only on BSP. So the timer
doesn't work on other cores and that breaks OSes that use it. Also,
microcode uses this information to figure out ACPI IO base, and that
is used for other features. This patch enables ACPI timer emulation
on all the logical CPUs.
BUG=chrome-os-partner:60011
TEST=iotools rdmsr x 0x121, x={0..3}, make sure it is set
Change-Id: I0d6cb8761c1c25d3a2fcf59a49c1eda9e4ccc70c
Signed-off-by: Andrey Petrov <andrey.petrov@intel.com>
Reviewed-on: https://review.coreboot.org/17663
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Some PCI-e capability registers are located starting from
0x100, these are not accessible using the conventional
PCI IO config operations at 0xcf8/0xcfc, unless PCI_CFG_EXT_IO
was selected.
Thus any feature that calls pciexp_find_extended_cap()
depends on either MMCONF_SUPPORT_DEFAULT or PCI_CFG_EXT_IO
being enabled on the platform.
In theory there can be system without MMCONF_SUPPORT, but
with complete PCI Express configuration space available
using PCI_CFG_EXT_IO. Do not use explicit PCI MMCONF
operations here, but rely on the default PCI access
method to be able to access all of the configuration space.
While at it, convert to IS_ENABLED() everywhere in the source
and organize Kconfig file better.
Change-Id: Ica6e16d2fb2adc532e644c4b2c47806490235715
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17546
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Error reporting can be enabled together with ASPM, there
is no other use for function return value.
Change-Id: I58081fac0df5205a5aea65d735d34b375c2af9cd
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17654
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
In order to mirror the full flexibility of the NHLT library that
allows a caller to set the OEM revision field in the ACPI header
modify the variant callback to override the value.
Change-Id: I16e539b350a50e3c163be1439c8637b82e53a759
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17651
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
In the ACPI header there's an OEM revision field that was previously
just being implicitly set to 0. Allow for a board to provide a
non-zero value for this field.
Change-Id: Icd40c1c162c2645b3990a6f3361c592706251f82
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17650
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Stash and reload postcar stage in the stage cache for increased
S3 resume speed. It's impact is small (2 ms or so), but there's
no need to go to the boot media on resume to reload something
that was already loaded. This aligns with the same paths we take
on ramstage as well.
Change-Id: I4313794826120853163c7366e81346858747ed0a
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17649
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
Instead of putting all the functions inline just put the
current implementation into a C file. That way all the implementation
innards are not exposed.
Lastly, fix up the fallout of compilation units not including the
headers they actually use.
Change-Id: I01fd25d158c0d5016405b73a4d4df3721c281b04
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17648
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Instead of having callers query the romstage handoff resume
status by inspecting the object themselves add
romstage_handoff_is_resume() so that the same information
can be queried easily.
Change-Id: I40f3769b7646bf296ee4bc323a9ab1d5e5691e21
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17647
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
The same pattern was being used throughout the code base
for initializing the romstage handoff structure. Provide
a helper function to initialize the structure with the S3
resume state then utilize it at all the existing call sites.
Change-Id: I1e9d588ab6b9ace67757387dbb5963ae31ceb252
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17646
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
We don't need to do explicit pci_io_read/write operations,
as we can use MMCONF everywhere. AGESA code still enables
extended cf8/cfc should it be needed by payload or OS.
Change-Id: Ib08028bda1b5226bb3b6b67e91f514480a9fc5ee
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17536
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Vendorcode always does PCI MMCONF access once it is
enabled via MSR.
In coreboot proper, we don't give opportunity to make
pci_read/write calls before PCI MMCONF is enabled via MSR.
This happens early in romstage amd_initmmio() for all cores.
Change-Id: Id6ec25706b52441259e7dc1582f9a4ce8b154083
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17534
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This allows us to set MMCONF_SUPPORT_DEFAULT since we enable
MMCONF early in romstage.
Change-Id: I380cf483bfe4e2d64969110ae6d5d04c3ced2418
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17532
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
We don't need to do explicit pci_io_read/write operations,
as we can use MMCONF everywhere. AGESA code still enables
extended cf8/cfc should it be required by payload or OS.
Change-Id: I278e5e26eb9a247f67927cbc67e04f081ca50f7b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17535
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Vendorcode always does PCI MMCONF access once it is
enabled via MSR.
In coreboot proper, we don't give opportunity to make
pci_read/write calls before PCI MMCONF is enabled via MSR.
This happens early in romstage amd_initmmio() for all cores.
Change-Id: If31bc0a67b480bcc1d955632f413f5cdeec51a54
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17533
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This allows us to set MMCONF_SUPPORT_DEFAULT since we enable
MMCONF early in romstage.
Change-Id: I994bb257db96300c2eb8872be6fae2a92bbabab4
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/17531
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
The SSCN and FMCN methods provide the optimal HCNT/LCNT timing values to
the driver, and are necessary when using I2C devices (eg, trackpad and
touchscreen) in ACPI (vs PCI) mode. Add these methods using the
timing values from Broadwell, which work for Haswell/Lynxpoint as well.
TEST: build google/peppy with trackpad/touchscreen devices in ACPI mode,
observe proper operation under Windows [8.1/10] and Linux [Mint 18]
Change-Id: I25f07ac474b041358315530e5f391bb33d9c4d04
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/17620
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Prabal Saha <coolstarorganization@gmail.com>
In bootblock, cpu flex ratio is set to non-turbo max.
In FSP UPD, if CpuRatioOverride is zero, then it tries to program cpu
ratio to zero. Since it is different than the non-zero value programmed
in bootblock, FSP gives reset.
To avoid the reset, set FSP UPD for CPU flex ratio override to that
value as set in bootblock.
Change-Id: I8cae5530ec97cedfbd71771f291db6f55a9fd5c2
Signed-off-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Signed-off-by: Naresh G Solanki <naresh.solanki@intel.com>
Reviewed-on: https://review.coreboot.org/17555
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Add support of Variant board model for existing intel/kblrvp,
since there might be more RVP board supports under
intel/kblrvp. Existing is for KBL RVP3 board.
BUG=none
BRANCH=none
TEST=Built and boot Kaby Lake RVP3
Change-Id: I041a07a273dbb77e422d48591f06b5f1011cd9f7
Signed-off-by: Barnali Sarkar <barnali.sarkar@intel.com>
Reviewed-on: https://review.coreboot.org/17630
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
Use common lib spd_bin to get spd.
Change-Id: If94413fc36a98f7694f560955bbb80abefe32166
Signed-off-by: Naresh G Solanki <naresh.solanki@intel.com>
Reviewed-on: https://review.coreboot.org/17435
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Add library to:
1. add spd.bin in cbfs, generated from mainboard/spd/*.spd.hex files.
2. runtime get spd data with spd index as input.
3. fetch spd over smbus using early smbus functions.
Change-Id: I44fe1cdb883dd1037484d4bb5c87d2d4f9862bf8
Signed-off-by: Naresh G Solanki <naresh.solanki@intel.com>
Reviewed-on: https://review.coreboot.org/17434
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
With commit 2c3054c1(soc/intel/skylake: Add USB Port Over
Current (OC) Pin programming) USB OC pin programming is already
initiated from devicetree.cb, hence remove it from ramstage.c.
BUG=none
BRANCH=none
TEST=Built and booted KBLRVP from USB device
Change-Id: Icb47533aa57f208d5a52560db924169b908c7a88
Signed-off-by: Barnali Sarkar <barnali.sarkar@intel.com>
Reviewed-on: https://review.coreboot.org/17635
Tested-by: build bot (Jenkins)
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
FSP 2.0 implementation conditionally sets PMRR base based on
EnableC6Dram UPD. Therefore, handle the case of the PMRR base not being
set since FSP 2.0 changed behavior from FSP 1.1 implementation.
If prmrr base is non-zero value, then top_of_ram is prmrr base.
If Probeless trace is enabled, then deduct trace memory size from
calculated top_of_ram.
Change-Id: I2633bf78705e36b241668a313d215d0455fba607
Signed-off-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Signed-off-by: Naresh G Solanki <naresh.solanki@intel.com>
Reviewed-on: https://review.coreboot.org/17554
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
In FSP 2.0 the UPD to send extra VR Mailbox commands is switched from
SendVrMbxCmd to SendVrMbxCmd1. Use the same in silicon initialization.
Change-Id: I46bd50c9acc0456e2483f20ccb5e9ec2a0de232a
Signed-off-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Reviewed-on: https://review.coreboot.org/17578
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
1. Move existing IO decode range from pch_lpc_init to early
stage before SIO init.
2. At the same time, enable SIO decode range (0x2e/0x2f)
for platform which use super IO.
Change-Id: I72df16d0a784686d8cadfbee09b5aef60576ac43
Signed-off-by: Teo Boon Tiong <boon.tiong.teo@intel.com>
Reviewed-on: https://review.coreboot.org/17337
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Legacy PME are enabled by default in FSP UPD region.
When Legacy PME is enabled, then an SCI is generated and should be
handled by OS and BIOS/Coreboot in collboration. OS requires some
ACPI methods (eg _L69) which help to determine the wake source and also
to clear some registers. But this infrastructure is not present as of
now in coreboot and also linux handles PMEs natively.
Hence the SCI was never handled by OS and the status bits were never
cleared i.e., PCI_EXP_STS.
For this reason the level triggered SCI will remain active and the
system will wake up as soon as it enters S3.
To fix this, diabled Legacy PME (PmSci for Root ports).
Change-Id: I61317eb45305bdb14be3cc1a54fd9961d6ed593e
Signed-off-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Signed-off-by: Naresh G Solanki <naresh.solanki@intel.com>
Reviewed-on: https://review.coreboot.org/17553
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Furquan Shaikh