This change replaces the device tree walks with device pointers by
using alias names for the following devices:
1. PMC MUX connector
2. SPI TPM
3. I2C TPM
Change-Id: I38f87d3a90a7253f2a29aba7db9a9f9744985494
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57740
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This change replaces the device tree walks with device pointers by
adding alias for dptf_policy generic device in the tree.
Change-Id: I8fd5476a9cea84ab8b2678167b3e0504eecacf6c
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57739
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Normally for vboot-enabled x86 board, the VBNV region is stored in CMOS
and backed up to flash (RW_NVRAM). However, on the very first boot after
a flash of the full SPI image (so RW_NVRAM is empty), if
RTC_BATTERY_DEAD is set, coreboot persistently requests recovery before
FSP-M finishes (which appears to be the current location that
RTC_BATTERY_DEAD is cleared on this platform). This is because
vbnv_cmos_failed() will still return 1. Therefore, immediately after
reading RTC_BATTERY_DEAD, it is cleared. This prevents an infinite boot
loop when trying to set the recovery mode bit.
Note that this was the behavior for previous generations of Intel PMC
programming as well (see southbridge/intel, soc/skylake, soc/broadwell,
etc).
BUG=b:181678769
Change-Id: I95753fa536fae8ca4bb95007419875815c1bcb06
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56672
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Normally for vboot-enabled x86 board, the VBNV region is stored in CMOS
and backed up to flash (RW_NVRAM). However, on the very first boot after
a flash of the full SPI image (so RW_NVRAM is empty), if
RTC_BATTERY_DEAD is set, coreboot persistently requests recovery before
FSP-M finishes (which appears to be the current location that
RTC_BATTERY_DEAD is cleared on this platform). This is because
vbnv_cmos_failed() will still return 1. Therefore, immediately after
reading RTC_BATTERY_DEAD, it is cleared. This prevents an infinite boot
loop when trying to set the recovery mode bit.
Note that this was the behavior for previous generations of Intel PMC
programming as well (see southbridge/intel, soc/skylake, soc/broadwell,
etc).
BUG=b:181678769
Change-Id: I1a55df754c711b2afb8939b442019831c25cce29
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56671
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Normally for vboot-enabled x86 board, the VBNV region is stored in CMOS
and backed up to flash (RW_NVRAM). However, on the very first boot after
a flash of the full SPI image (so RW_NVRAM is empty), if
RTC_BATTERY_DEAD is set, coreboot persistently requests recovery before
FSP-M finishes (which appears to be the current location that
RTC_BATTERY_DEAD is cleared on this platform). This is because
vbnv_cmos_failed() will still return 1. Therefore, immediately after
reading RTC_BATTERY_DEAD, it is cleared. This prevents an infinite boot
loop when trying to set the recovery mode bit.
Note that this was the behavior for previous generations of Intel PMC
programming as well (see southbridge/intel, soc/skylake, soc/broadwell,
etc).
BUG=b:181678769
Change-Id: Idfaa9a24f7b7fefa4f63ab8e3bc4ee6a0f1faedf
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56670
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Normally for vboot-enabled x86 board, the VBNV region is stored in CMOS
and backed up to flash (RW_NVRAM). However, on the very first boot after
a flash of the full SPI image (so RW_NVRAM is empty), if
RTC_BATTERY_DEAD is set, coreboot persistently requests recovery before
FSP-M finishes (which appears to be the current location that
RTC_BATTERY_DEAD is cleared on this platform). This is because
vbnv_cmos_failed() will still return 1. Therefore, immediately after
reading RTC_BATTERY_DEAD, it is cleared. This prevents an infinite boot
loop when trying to set the recovery mode bit.
Note that this was the behavior for previous generations of Intel PMC
programming as well (see southbridge/intel, soc/skylake, soc/broadwell,
etc).
BUG=b:181678769
Change-Id: Ie86822f22aa5899a7e446398370424ca5a4ca43d
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56669
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Fix the two issues below.
SB800: sb_Before_Pci_Init
shift out of bounds src/vendorcode/amd/cimx/sb800/PCILIB.c:49:18
ubsan: unrecoverable error.
SB800: sb_Before_Pci_Init
shift out of bounds src/vendorcode/amd/cimx/sb800/PCILIB.c:66:18
ubsan: unrecoverable error.
Found by: UBSAN
Change-Id: Id42e62d35f59793bad10998f14422ab7fb4fc029
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51283
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michał Żygowski <michal.zygowski@3mdeb.com>
This enables runtime power management for the I2C controllers.
BUG=b:182556027, b:183983959
TEST=enable dynamic debug in kernel and check i2c D3/D0 transitions
during suspend_stress_test.
Change-Id: Ia6b9ca95d751f32b7cd701494377f15091c22d2f
Signed-off-by: Julian Schroeder <julianmarcusschroeder@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56462
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This enables runtime power management for the UART controllers.
BUG=b:183983959
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I4e57d6312feda459cec65f330c6d2072774d4eb5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57681
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Currently, running abuild in a fresh checkout without having built the
toolchain results in the following confusing behaviour:
1. Run abuild. It fails due to the missing coreboot toolchain, and the
error message suggests running `make crossgcc`.
2. Run `make crossgcc`. It succeeds.
3. Re-run abuild. It still fails due to a missing coreboot toolchain.
This happens because the first abuild run generates an xcompile file
which uses the system toolchain. The second abuild run doesn't
regenerate the xcompile, so it still fails due to the non-coreboot
toolchain.
To avoid this confusing behaviour, regenerate the xcompile file every
time abuild is run.
BUG=None
TEST=Perform the steps above in a clean checkout. The second abuild run
now succeeds.
Signed-off-by: Reka Norman <rekanorman@google.com>
Change-Id: I78a7702c45cecbfe8460ec55df03741e5ced94b3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57651
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Currently, Intel TME (Total Memory Encryption) can be enabled regardless
of SoC support. Add a Kconfig to guard the option depending on actual
support.
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Change-Id: Ia20152bb0fc56b0aec3019c592dd6d484829aefe
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57762
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This change provides helper macros for generating pointer name and
weak pointer definition for devices using alias names. This will be
helpful for developers to reference the device pointer with alias
names used in the device tree.
Change-Id: I3a5a3c7fdc2c521bac9ab3336f5a6ebecd621e04
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57738
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
This change uses _dev_${ALIAS_NAME} as the name for `struct device` if
the device has an alias. In addition to that, it emits
_dev_${ALIAS_NAME}_ptr which points to the device structure. This
allows developers to directly reference a particular device in the tree
using alias name without having to walk the entire path. In later CLs,
mainboards are transitioned to use this newly emitted device structure
pointers.
Change-Id: I8306d9efba8e5ca5c0bda41baac9c90ad8b73ece
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57657
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
The Kconfig options for custom SPD values aren't supposed to be part of
the choice block.
Change-Id: I12eb1012f94000b14e5d7f1e5123dddf69ac1a94
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57717
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
USB3 MB doesn't have re-timer. Thus we have to configurate the AUX pin.
For now, we use USB3 DB to determine the USB3 MB.
BUG=b:197907500
TEST=NA
Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: Ide45c77e0a6f736a02d5dc9ad05aa1ef9e754fa5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57656
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
To save the S3 power, USB3_HUB_RST_L is externally pulled up to a
weak resistor so we have to reset the hub via GPIO84 as early
as possible. Otherwise the USB3 hub may be not usable.
BUG=b:199822702
TEST=measure voltage of USB3_HUB_RST_L as 1.8V
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: Ie87d631e83ede819ee9f9951dfc6517beae50247
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57663
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Update thermal setting from thermal team.
BUG=b:200134784
TEST=build and verified by thermal team.
Signed-off-by: Wisley Chen <wisley.chen@quanta.corp-partner.google.com>
Change-Id: If74c3bc19cf4abd64d646b842cbb6a61b910e933
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57713
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
The input buffer to the buffer_to_fifo family of functions is only read,
so it can be a const pointer. (Also, remove the MIPS check in libpayload
for these functions... the MIPS architecture has been removed a while
ago.)
Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: I021069680cf691590fdacc3d51f747f12ae3df31
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57731
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
SBI comes with its own memset implementation (under a slightly
different name) that gcc11 "helpfully" tries to replace with a call
to memset(). Since we don't provide a memset, the linker isn't happy,
so prevent gcc from doing that.
Change-Id: I3459a519d46a123f873306000b8b2261bd64e0c3
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56429
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
We never call console_init from asm, so we don't need the asmlinkage.
This allows us to remove the arch/cpu.h include since we only needed it
for the asmlinkage #define.
BUG=b:179699789
TEST=build guybrush
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I9a7895d4f5cba59f6b05915fa4d6c6fd6ab85773
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57568
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This include provides the definition of enum cb_err.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Idfee720de920377796e3fd64cb47514b8cb08c34
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57730
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Including arch/cpu.h is needed to have the declaration for cpuid_eax,
get_fms and struct cpuinfo_x86.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I18b60f8cf33f71c7215a97ea209b8f8cf66cf42f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57729
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
smp_processor_id is defined in src/arch/arm64/include/armv8/arch/cpu.h.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I0b610189bf439774cb900f74559dee314cbc5854
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57728
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Include device/device.h to have struct device defined and types.h to
have bool, u8, u16 and u32 defined.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I3c5d5a78c2e2dab21432ced5f84665eb78a49d52
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57727
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Migrate the last two platforms to using Kconfig through
`get_valid_prmrr_size()` instead of hardcoded values in the devicetree.
Change-Id: I93aa177f741ca8b2a2d50fae2515606b96784e83
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57674
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
NVMe needs extra time to run boot process, enable power and deassert
reset for NVMe earlier in the boot flow that primus can successfully
boot into OS with non-serial coreboot.
BUG=b:199967106
TEST=USE="project_primus" emerge-brya coreboot and verify it builds
without error.
Signed-off-by: Malik_Hsu <malik_hsu@wistron.corp-partner.google.com>
Change-Id: I9c66efe96515347502d059556052c764c1be5d09
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57658
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Including arch/cpu.h is needed to have the declaration for
cpu_get_feature_flags_ecx.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I091c82f5a55ee9aa84a255c75c7721eff989344d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57726
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Including arch/cpu.h is needed to have the declaration for cpuid_eax.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ic22aba062117e3afa818fa2fc39cb0738e6a1612
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57725
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Apart from the u8, u16 and u32 types, the bool type is used in this file
so include types.h instead of stdint.h to have bool defined too.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I95f037deb0fe11b717586df655065bfbb33b0d23
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57724
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Apart from the bool type, uint8_t, uint32_t and uint64_t are used in
this file, so include types.h instead of stdbool.h.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I30088d68132058f40b974fbaa822f322b58ed6c7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57723
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Both bool and uintptr_t types are used in this file, so include types.h
to have the definitions.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I647d9f50cd6edaf08bebf5d713cd05731fadfc1b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57722
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
These statements fit on a single line. Reflow them to ease future works.
Change-Id: Ie18e9a00f67b999fdcedcab3c28b68e34bc93da4
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55814
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Follow FIBOCOM_L850-GL Hardware User Manual_V1.0.8.
BUG=b:180166408,b:187691798
TEST=measure WWAN power off by scope is meeting the spec.
Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Change-Id: I6b2725cd61d5b54bc7fd70a9daffd29e7b43690b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57634
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
When the century byte was reserved, the debug_level was accidentally
converted from an enum to a hidden value. Change it back to an enum.
Fixes: f05bd8830d ("mb/system76/*: cmos.layout: Reserve century byte")
Change-Id: Id88a7aed7b2fc793fd003db5b45f3f201b1a7630
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57682
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jeremy Soller <jeremy@system76.com>
When using a debug build of the FSP, the FSP-M binary is larger than the
memory region we have allocated for it, so increase the size to make the
binary of the debug build fit in there. Also adjust the VERSTAGE_ADDR so
that it starts right after the the FSP-M memory region.
TEST=coreboot builds now successfully when using a debug version of the
FSP
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: Ib64806bcf948d5ed4bcf8e1f50004091f125dc7e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57718
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Currently there are two versions of spd_tools: one for LP4x and one for
DDR4. This change is the first step in unifying these into a single
tool.
This change implements a unified version of the spd_gen tool, by
combining the functionality currently in lp4x/gen_spd.go and
ddr4/gen_spd.go. The unified version takes the memory technology as an
argument, and generates SPD files for all platforms supporting that
technology.
BUG=b:191776301
TEST=Compare the SPDs generated by the old and new versions of the tool
for all supported platforms. For reference, the test script used is
here: https://review.coreboot.org/c/coreboot/+/57511
Signed-off-by: Reka Norman <rekanorman@google.com>
Change-Id: I7fc036996dbafbb54e075da0c3ac2ea0886a6db2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57512
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
To save the space for FW, some of the FWs are going to be defined as
LVL2 entries. To be compatible to "flattened" layout, we still drop
the LVL2 entry to level1 if there is only one level.
Change-Id: Ibe8cdd5c14225899352b02bb19aae6059d56d428
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57063
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
The `CaVrefConfig` FSP-M UPD describes how the on-die Vref generators
are connected to the DRAM. With the exception of an early Skylake RVP
board (which doesn't have coreboot support), mainboards using DDR3 or
LPDDR3 memory should set `CaVrefConfig` to 0, whereas mainboards with
DDR4 should set `CaVrefConfig` to 2. MRC uses this information during
memory training, so it is important to use the correct value to avoid
any issues, such as increased power usage, system instability or even
boot failures.
However, several Skylake DDR4 mainboards don't set `CaVrefConfig` to 2.
Although they can boot successfully, it's not optimal. For boards that
set `DIMM_SPD_SIZE` to 512 (DDR4 SPD size), set `CaVrefConfig` to 2.
Change-Id: Idab77daff311584b3e3061e9bf107c2fc1b7bdf1
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57262
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Furquan Shaikh