Make the the FSP Parameter PchHdaVcType a devicetree setting and make
use of it in the devicetrees of all boards that currently set it.
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Change-Id: Ibafc3b6bd2495658f2bd634218042ec413a89f5e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35542
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maxim Polyakov <max.senia.poliak@gmail.com>
The filename chip.h has a special purpose with the generation
of static devicetree, where the configuration structure name matches
the path to the chip.h file. For example, soc/intel/skylake/chip.h
defines struct soc_intel_skylake_config.
The renamed file did not follow this convention and the structure it
defines would conflict with one defined soc/intel/common/chip.h if such
is ever added.
Change-Id: Id3d56bf092c6111d2293136865b053b095e92d6b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35657
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This adds SATA parameters for SpinUp, HotPlug and TestMode to the
Skylake FSP 2.0 interface.
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Change-Id: I7ba67879b78c2cb0fd0b0ce832140b213edd5884
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35186
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
The P2SB PCI device can be "hidden", which causes all sorts of
nightmares and bugs. Moreover, FSP tends to hide it, so finding
a good solution to this problem is impossible with FSP into the mix.
Since the values for IBDF and HBDF were already hardcoded as FSP
parameters, define them as macros and use these values directly to
generate the DRHD.
Change-Id: I7eb20182380b953a1842083e7a3c67919d6971b9
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35108
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Mimoja <coreboot@mimoja.de>
Reviewed-by: Maxim Polyakov <max.senia.poliak@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Enables Gaussian Mixture Model (GMM) only if the corresponding pci
device is enabled in the device tree
Tested on Asrock H110M DVS motherboard
Change-Id: I21409adf85b70bccc30dd8e12a03ad7921544b3c
Signed-off-by: Maxim Polyakov <max.senia.poliak@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35168
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
To call dev_find_slot(0, xx) in romstage can produce
invalid results since PCI bus enumeration has not
been progressed yet.
Replace this with method that relies on bus topology
that walks the root bus only.
Change-Id: I2883610059bb9fa860bba01179e7d5c58cae00e5
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33996
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
This patch ensures to make use of common MP Init Kconfig to
choose desire method to peform MP initialization for platform.
Change-Id: I4ee51276026748e8daf154f89e57095e8fe50280
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/30289
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This patch is a raw application of
find src/ -type f | xargs sed -i -e 's/IS_ENABLED\s*(CONFIG_/CONFIG(/g'
Change-Id: I6262d6d5c23cabe23c242b4f38d446b74fe16b88
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31774
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
We had two ways to configure the serial IRQ mode. One time in the
devicetree for FSP and one time through Kconfig for coreboot. We'll
use `enum serirq_mode` from soc/intel/common/ as a devicetree option
instead. As the default is `quiet mode` here and that is the most
common mode, this saves us a lot of lines.
In four cases kblrvp8, 11 and librem 13v2, 15v3, we had conflicting
settings in devicetree and Kconfig. We'll maintain the `continuous`
selection, although it might be that coreboot overrode this earlier
on the kblrvps.
Note: A lot of Google boards have serial IRQ enabled, while the pin
seems to be unconnected?
Change-Id: I79f0cd302e335d8dcf8bf6bc32f3d40ca6713e5c
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/31596
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Use the common VMX implementation, and set IA32_FEATURE_CONTROL
lock bit per Kconfig *after* SGX is configured (as SGX also sets
bits on the IA32_FEATURE_CONTROL register).
As it is now correctly based on a Kconfig, the `VmxEnable` devicetree
setting vanishes.
Test: build/boot google/[chell,fizz], observe Virtualization enabled
under Windows 10 when VMX enabled and lock bit set.
Change-Id: Iea598cf74ba542a650433719f29cb5c9df700c0f
Signed-off-by: Nico Huber <nico.h@gmx.de>
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/29682
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This is spotted using "./util/lint/kconfig_lint"
While at it, do the check in C and not the preprocessor.
Change-Id: Icfda267936a23d9d14832116d67571f42f685906
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/31050
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
PL4 is a preemptive CPU package peak power limit,it will never be exceeded.
Power is preemptively lowered before limit is reached.
This change provides option in devicetree and feeds FSP PowerLimit4 UPD for
power limit purpose.
Signed-off-by: Praveen hodagatta pranesh <praveenx.hodagatta.pranesh@intel.com>
Change-Id: I64b5a029104a102e5741e8b37c7992f2693180e8
Reviewed-on: https://review.coreboot.org/c/29808
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
In Skylake/Kabylake, if ACPI PM timer is disabled then TCO also gets
disabled & vice versa.
FSP default config for EnableTcoTimer is disabled, this caused ACPI PM
timer & TCO to be disabled by FSP even when config PmTimerDisable = 0.
Thus update FSPS UPD EnableTcoTimer in accordance to devicetree config
PmTimerDisable.
BUG=None
TEST= Build for Soraka with PmTimerDisable=0 & check if TCO caused
reboot after running shell command: cat >> /dev/watchdog0
Change-Id: Ia146761036c9dbaef3c02c9a7122ae3dcdef7bdd
Signed-off-by: Naresh G Solanki <naresh.solanki@intel.com>
Reviewed-on: https://review.coreboot.org/29108
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Its spreading copies got out of sync. And as it is not a standard header
but used in commonlib code, it belongs into commonlib. While we are at
it, always include it via GCC's `-include` switch.
Some Windows and BSD quirk handling went into the util copies. We always
guard from redefinitions now to prevent further issues.
Change-Id: I850414e6db1d799dce71ff2dc044e6a000ad2552
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/28927
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Add support to set eMMC tuning params from the device tree so that it
can be configured per board.
BUG=b:112718426,b:112690628
BRANCH=none
TEST=Build nocturne image and checked values passed in dev tree is set
by FSP.
Change-Id: Ic71934dce9a1c380a057e579ca3fda41983b9385
Signed-off-by: Pratik Prajapati <pratikkumar.v.prajapati@intel.com>
Reviewed-on: https://review.coreboot.org/28274
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
This change permits the subsystem ID to be specified via Kconfig for the
devices on the SoC.
Some devices are getting zero'ed subsystem IDs because the unset (and thus
zero'ed) config options are overwriting the fsp defaults. With this change
the fsp defaults will only be overwritten by non-zero config values.
Change-Id: I0f7bb8e465f55e5dd6d8e0fad71b9b2a22f089dc
Signed-off-by: Matt Delco <delco@chromium.org>
Reviewed-on: https://review.coreboot.org/27609
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Config ISH in SOC side by checking if ISH device is turned on.
"IshEnable" is not needed anymore since ISH device on/off will tell
if ISH should be enabled or not. "IshEnable" will be removed from chip.h
in separate CL.
Atlas board specific ISH setting is needed, which is committed in
separate CL.
BUG=b:79244403
BRANCH=none
TEST=Verified on Atlas board with ISH rework. ISH log showed on console.
Change-Id: I3fc8648b3e6551497617ef1ebd2889245cdd31c3
Signed-off-by: li feng <li1.feng@intel.com>
Reviewed-on: https://review.coreboot.org/26485
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
SoC users from IOTG team is looking forward for a solution to skip
coreboot AP initialization flow and make use of FSPS-UPD to
perform AP reset.
TEST=Assign use_fsp_mp_init=1 to ensure coreboot is not bringing APs
out of reset.
Change-Id: Ibc8cd411e802fb682436a933073922b2693ba994
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/26644
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
pch lockdown functionality can be used by supported PCH.
Right now pch lockdown functionality is applied for SPT
(Skylake SOC) and CNP(Cannon Lake SOC) PCH.
BUG=b:78109109
BRANCH=none
TEST=Build and boot KBL and CNL platform.
Change-Id: I0b81bbc54f737cb4e7120f44bbe705039b45ccb3
Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/25688
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Adding common chip config structure which will be used to return data to
common code. When common code requires soc data, code used to fetch
entire soc config structure. With this change, common code will only get
the data/structure which is required by common code and not entire
config.
For now, adding i2c, gspi and lockdown configuration which will be used
by common code.
BUG=none
BRANCH=b:78109109
TEST=compile code for APL/SKL/CNL. Boot using SKL/APL/CNL and check
values are returned properly using common structure.
Change-Id: I7f1671e064782397d3ace066a08bf1333192b21a
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-on: https://review.coreboot.org/26189
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Hannah Williams <hannah.williams@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This patch provides option for mainboard to skip coreboot MP
initialization if required based on use_fsp_mp_init.
Option for mainboard to skip coreboot MP initialization
* 0 = Make use of coreboot MP Init
* 1 = Make use of FSP MP Init
Default coreboot does MP initialization.
Change-Id: I8de24e662963f4600209ad1b110dc950ecfb3a27
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/26818
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
After FSP-S, a device on PCI function n will be function swapped
to function 0 if there is no device presnet on function 0.
It needs some modification for DT and causes mismatches between
software configuration and hardware schematic. This patch is
from d779605, which swaps the devfn of the first enabled device
in DT and function 0 resides in a PCI device.
BUG=b:80105785
BRANCH=None
TEST=Make sure the device is still enabled after coalescence with
device on bus 0 and w/o device on bus 0. Test with suspend
and resume and ensure it's consistent.
Change-Id: Ibbc5d6e979977011f5904c8bd4b2f1be16bd23dc
Signed-off-by: Gaggery Tsai <gaggery.tsai@intel.com>
Reviewed-on: https://review.coreboot.org/26479
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Use of device_t has been abandoned in ramstage.
Change-Id: Idf00c029331aba30c8bfca71546cad62ff6bb0a7
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26541
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Skylake used the inner function, wrapping it in the same set of tests as
the common code does, but expressed differently.
Change-Id: Ifa6912255e7874a6e80301d49128adda6f624209
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/26037
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
If the SoC is VT-d capable, write an ACPI DMAR table. The entry for the
GFXVTBAR is only generated if the IGD is enabled.
Change-Id: I8176401dd19aee7ad09a8a145b7a3801fe5b2ae1
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/21588
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Youness Alaoui <snifikino@gmail.com>
We use the usual static addresses 0xfed90000/0xfed91000 for the GFX
IOMMU and the general IOMMU respectively. These addresses have to be
configured in MCHBAR registers (maybe, who knows, the blob is undocu-
mented), advertised to FSP and reserved from the OS.
The new devicetree option `ignore_vtd` allows to retain the old beha-
viour (do whatever pre-set UPD values suggest).
We also let FSP set up distinct BDFs for messages originating from the
I/O-APIC and the HPET.
Change-Id: I77f87c385736615c127143760bbd144f97986b37
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/21597
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Youness Alaoui <snifikino@gmail.com>
Use the common xDCI function to check if the controller is allowed
in the current mode before enabling it. Otherwise, disable the
PCI device if it has been enabled in devicetree.
To make the SOC behavior consistent the XdciEnable config option
is removed in favor of direct control by devicetree.cb and the
mainboards that had defined it were adjusted accordingly.
This was tested on an Eve board with xDCI enabled in devicetree.cb
to ensure the xDCI device is enabled in developer mode and disabled
in normal mode.
Change-Id: Ic3c84beac87452f17490de32082030880834501d
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/25365
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Add a variable to fill out the FSP UPD variable for PCIe HotPlug,
which allows a mainboard to enable HotPlug on individual root ports.
BUG=b:72417777
TEST=enable HotPlug on Eve Root Port 0 (WiFi) and check in linux
that it is identified as a HotPlug capable root port.
Change-Id: I6b1f525e41909a3f81984806c4ef20239032c8d6
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/23511
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
According to doc #543977 Power Architecture Guide, PsysPmax is the
maximum platform power. It maps to the full-scale of Psys signal.
This patch adds a "psys_pmax" member in chip information which allows
boards to set up maximum platform power.
BUG=b:71594855
BRANCH=None
TEST=Set "psys_pmax" in device tree & "USE=fw_debug emerge-fizz
chromeos-mrc coreboot chromeos-bootimage" & ensure correct
PsysPmax value is passed to FSP-S through UPD. Verfied on
KBL-R and KBL-U SKUs.
Change-Id: I44f2e2917a8eb9ce3bb69d9c15899d4c7c5b2883
Signed-off-by: Gaggery Tsai <gaggery.tsai@intel.com>
Reviewed-on: https://review.coreboot.org/23268
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This change provides option in devicetree and feeds the option to
FSP SataPwrOptEnable UPD for power saving purpose
BUG=b:70491485
Change-Id: I9099c5c97765a118bdee64da303cb3ba6ceb951b
Signed-off-by: Kane Chen <kane.chen@intel.com>
Reviewed-on: https://review.coreboot.org/23018
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
New UPD PcieRpClkSrcNumber introduced in FSP V2.9.2 to configure
clock source number of PCIe root ports. This UPD array is set to clock
source number(0-6) for all the enabled PCIe root ports, invalid(0x1F)
is set for disabled PCIe root ports.
BUG=b:70252901
BRANCH=None
TEST= Perform the following
1. Build and boot soraka
2. Verify PCIe devices list using lspci command
3. Perform Basic Assurance Test(BAT) on soraka
Change-Id: I95ca0d893338100b7e4d7d0b76c076ed7e2b040e
Signed-off-by: Divya Chellap <divya.chellappa@intel.com>
Reviewed-on: https://review.coreboot.org/22947
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Add parameters to configure the integrated LAN via FSP. Since
this takes over a PCI CLKREQ# pin it needs to know which pin
it should use, and there are additional parameters for LTR and
a "K1 power save" feature.
This was tested on a KBL-R board with integrated LAN, verifying
that the device is functional under Linux with the e1000e driver.
Change-Id: Idb200cec90a3c0d4d9c914bae9983a3bcdafcd06
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/22856
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Currently, "tcc_offset" defined in devicetree is overwritten by
Intel FSP-S UPD "TccActivationOffset".
This patch will make "TccActivationOffset" refer to "tcc_offset".
TEST=check if MSR (0x1a2[29:24]) value is updated with "tcc_offset"
by iotools (rdmsr 0 0x1a2).
Change-Id: Ibc6f33bea19a1d59bc7e407815210942b38f0702
Signed-off-by: marxwang <marx.wang@intel.com>
Reviewed-on: https://review.coreboot.org/22818
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Intel common PCI driver is handle PCI subsystem ID
programming, hence no need to have an explicit soc
function to do the same.
TEST=PCI subsystem id is getting programming during
pci enumeration.
Change-Id: Iead57a286b26d532e578cfff99f412c23fd4c2fe
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/22769
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
PCI resources MMIO space/bus master enabling is handled inside
pch_dev_enable_resources() from common device code. Hence
no need to have an explicit soc function to do the same.
TEST=lspci from kernel console shows same pci device list
without and without this patch.
Change-Id: I005e486dd435e9c61ae3f5dfe3ff0e8f688d16e1
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/22755
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
The Librem13v2 needs to set this parameter to work around
power-related issues with some SATA devices.
Change-Id: I7fcef36ec8662e18834394b72427a0633c6b7e92
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/22045
Reviewed-by: Youness Alaoui <snifikino@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
There are a lot errors reported by AER driver for root port 0.
The erors are being caused by an unsupported request from the
device to the upstream port. Enabling LTR on the root port stops
these errors, it is because LTR is enabled on the device side but
not on the root port and hence root port was logging the LTR messages
from the device as unsupported.
The PCIe base spec (v3.1a) section 6.18 also states that:
LTR support is discovered and enabled through reporting and control
registers described in Chapter 7. Software must not enable LTR in an
Endpoint unless the Root Complex and all intermediate Switches indicate
support for LTR. Note that it is not required that all Endpoints support
LTR to permit enabling LTR in those Endpoints that do support it. When
enabling the LTR mechanism in a hierarchy, devices closest to the
Root Port must be enabled first.
If an LTR Message is received at a Downstream Port that does not
support LTR or if LTR is not enabled, the Message must be treated
as an Unsupported Request. FSP has a UPD for enabling/disabling
LTR on root port, use the same for configuring LTR on PCIe root ports.
BUG=b:65570878
TEST=After enbaling LTR on port 0 on the MB devicetree, No errors reported
by AER driver for root port 0.
Change-Id: Ica97faa78fcd991dad63ae54d2ada82194b4202a
Signed-off-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Reviewed-on: https://review.coreboot.org/21547
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
