This code was never tested with SSE enabled. Now qemu enables it and
FX_SAVE encroaches on the save states. Without SSE enabled the handler
just happened to be aligned downwards enough to have the save states
fit. With SSE enabled that's not the case. The proper fix is to give the
code setting up stubs the right base address, which is the same as for
the TSEG codepath.
Change-Id: I45355efb274c6ddd09a6fb57743d2f6a5b53d209
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69233
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Provide timing parameter for SSDT generation to achieve the requested
100 kHz speed with a high accuracy.
Test: Measure I2C bus clock, high and low times during I2C access from
Linux and confirm they match the specification.
Change-Id: Ifb6019421b612133b8f25c076519bc0e7200dad8
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69307
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
In Linux, the I2C speed defaults to 400 kHz if there is no device
registered in ACPI which requests a different speed. Due to board
limitations (layout, bus load), 400 kHz are too fast which results in a
timing violation. Therefore, add a dummy I2C device to both used I2C
buses (I2C1 and I2C2) with a speed of 100 kHz. This will limit the bus
speed in Linux accordingly.
Change-Id: I507c53c9ec7f763cef18903609231b1a66ed98fa
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69306
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
According to measurements Elkhart Lake seems to drive the internal I2C
controllers with 100 MHz instead of the common 133 MHz. The datasheet
itself is quite vague on this definition, just one place mentions that
it is 100 MHz (register description for offset 0x94).
This patch changes the I2C controller base frequency to 100 MHz. The
verification was done by measuring the set up resulting I2C clock for
both 100 and 400 kHz.
Change-Id: I7c826bbb01b53e3661746e49f25441565068d1c2
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69305
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
There are SoCs (for instance Intel Elkhart Lake) that do use 100 MHz as
the base clock for I2C controllers. To support them properly add a
frequency setting for 100 MHz to the designware I2C controller driver.
Change-Id: I9ea11c6a41fd3758b771a416251e108cbe722769
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69304
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Add wifi sar table for craask/craaskbowl.
Use fw_config to separate different project settings.
BUG=b:247652032,b:251287099,b:251287101
Test=emerge-nissa coreboot
Signed-off-by: Tyler Wang <tyler.wang@quanta.corp-partner.google.com>
Change-Id: I5c92f0ab53ece12a97068f09241e5298909116aa
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68660
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Reka Norman <rekanorman@chromium.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
On certain mainboards due to hardware design limitations, certain SPI
Read Modes eg. (Dual I/O 1-2-2) cannot be supported. Add ability to
override SPI read modes in boards which do not have hardware
limitations. Currently there is an API to override SPI fast speeds.
Update this API for mainboards to override SPI read mode as well.
BUG=b:225213679
TEST=Build and boot to OS in Skyrim. Observe a boot time improvement of
~25 ms with 100 MHz SPI speeds.
Before:
11:start of bootblock 688,046
14:finished loading romstage 30,865
16:FSP-M finished LZMA decompress (ignore for x86) 91,049
Total Time: 1,972,625
After:
11:start of bootblock 667,642
14:finished loading romstage 29,798
16:FSP-M finished LZMA decompress (ignore for x86) 87,743
Total Time: 1,943,924
Change-Id: I160b56f6201a798ce59e977ca40301e23ab63805
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68946
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jon Murphy <jpmurphy@google.com>
Add new ram_id:0 (0000) for memory part H9JCNNNCP3MLYR-N6E.
DRAM Part Name ID to assign
H9JCNNNCP3MLYR-N6E 0 (0000)
BUG=b:257867226
TEST=Use part_id_gen to generate related settings and
emerge-nissa coreboot
Signed-off-by: Ian Feng <ian_feng@compal.corp-partner.google.com>
Change-Id: If663afbcd2e0457636f4a1c7475f1e3e40f0dd96
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69312
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kangheui Won <khwon@chromium.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Tarun Tuli <taruntuli@google.com>
SX9324 driver is updated per Linux's documentation found at
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/iio/proximity/semtech,sx9324.yaml
Supporting logic for the deprecated SX932x driver is hence guarded by
DRIVERS_I2C_SX9324_SUPPORT_LEGACY_LINUX_DRIVER
This patch by itself does not introduce functional changes to any board.
The legacy SX932x Linux driver never reached upstream Linux and is only
available in ChromeOS kernel fork of 4.4 and 5.4. Linux later accepted
a different implementation named SX9324 and has been available since
5.4. Ideally all variants should adopt the new driver; however, during
the transition phase, coreboot must support both drivers. It is better
to have a single firmware build that can work with both Linux kernel
drivers by specifying both sets of properties. Legacy driver support
should be deleted once all variants finish migration.
BUG=b:242662878
TEST=Dump ACPI SSDT then verify _DSD entries related to the legacy
SX932x driver are identical w/ and w/o this patch
(Tested on Craask and Nivviks)
Change-Id: I42cd6841c3a270c242ed2e739db245e858eadb3b
Signed-off-by: Victor Ding <victording@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69192
Reviewed-by: Reka Norman <rekanorman@chromium.org>
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Add Fingerprint SPI, and power-off FPMCU during romstage.
For reference see CL:66915 for a similar change to Brya's power sequence
SHA: 2b523ce631 ("Invoke power cycle of
FPMCU on startup")
TEST=Tested on Rex - setup and logged in using fingerprint
Change-Id: I4e6be24e72a8232ae2c958a01cf8ea9a272d7365
Signed-off-by: Eran Mitrani <mitrani@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66992
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
These functions are added for ramstage:
* add IPMI OEM command to get board configuration.
* add function to get blade index in the sled.
Signed-off-by: Jingle Hsu <jingle_hsu@wiwynn.com>
Signed-off-by: Jonathan Zhang <jonzhang@meta.com>
Change-Id: I85ec7ba68d580c13e368e7d656dba47ea043d33e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68779
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Christian Walter <christian.walter@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Add Kconfig SOC_RAS_BMS_SEL and corresponding support for
generating PCIe error SEL records and sending them to BMC.
Add PCIe error definitions.
This is needed for SMM, so build the ipmi kcs driver in SMM.
Signed-off-by: Tim Chu <Tim.Chu@quantatw.com>
Signed-off-by: Rocky Phagura <rphagura@fb.com>
Signed-off-by: Jonathan Zhang <jonzhang@meta.com>
Change-Id: I1ee46c8da7dbccbe1e2cc00bfe62e5df2f072d65
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68758
Reviewed-by: Christian Walter <christian.walter@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This patch introduces support signing and verification of firmware
slots using CBFS metadata hash verification method for faster initial
verification. To have complete verification, CBFS_VERIFICATION should
also be enabled, as metadata hash covers only files metadata, not their
contents.
This patch also adapts mainboards and SoCs to new vboot reset
requirements.
TEST=Google Volteer/Voxel boots with VBOOT_CBFS_INTEGRATION enabled
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Change-Id: I40ae01c477c4e4f7a1c90e4026a8a868ae64b5ca
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66909
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Intel FSPs of XEON server platforms define FSPX_CONFIG
instead of FSP_X_CONFIG, which is expected by coreboot.
Re-define in the common code.
Update coreboot code to use FSP_X_CONFIG consistently.
Tested=On OCP Delta Lake, boot up OS successfully.
Signed-off-by: Jonathan Zhang <jonzhang@fb.com>
Signed-off-by: Johnny Lin <johnny_lin@wiwynn.com>
Change-Id: Ifa0e1efa1618fbec84f1e1f23d9e49f3b1057b32
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69090
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
The functions create_bpdt_hdr and create_cse_layout
in bpdt_1_6.c are defined to return pointers but
not integers as was previouly implemented.
Reported-by: Coverity(CID:1469323)
Reported-by: Coverity(CID:1469353)
Signed-off-by: Solomon Alan-Dei <alandei.solomon@gmail.com>
Change-Id: Idb78d94be7a75a25ad954f062e9e52b1f0b921dc
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68986
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
The 0x9a, 0x9b, and 0x9c postcodes are not used anywhere else in the
coreboot tree other than in arch/x86/tables.c. Add macros to
standardize these postcodes.
Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: I16be65ffa3f0b253fe4a9bb7bfb97597a760ad3f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69200
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
This patch groups vboot context, recovery reason and subcode saving, and
reboot calls into two handy functions:
- vboot_save_and_reboot() - save context and reboot
- vboot_fail_and_reboot() - store recovery reason and call function
above
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Change-Id: Ie29410e8985e7cf19bd8d4cccc393b050ca1f1c5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69208
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Disable Pch PM Energy Report WA was added to enhance boot time
with HFPGA only. SoC needs reporting enabled.
BUG=None
TEST=Build and Boot Google, Rex and Intel, MTLRVP without any boot time regression..
Signed-off-by: Ravi Sarawadi <ravishankar.sarawadi@intel.com>
Change-Id: If5f1f9c6ab31652977d436a49a3531edffbd60c5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69042
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Sridhar Siricilla <sridhar.siricilla@intel.com>
This patch replaces static index 0 for PMC read resources with PCI
configuration offset 0x10 (PWRMBASE).
TEST=Able to build and boot Google, Rex to OS.
Without this change:
[SPEW ] PCI: 00:1f.2 resource base fe000000 size 10000 align 0 gran
0 limit 0 flags f0000200 index 0
With this change:
[SPEW ] PCI: 00:1f.2 resource base fe000000 size 10000 align 0 gran
0 limit 0 flags f0000200 index 10
Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: Iee2523876a8045e70effd5824afc327d1113038b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69227
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
This patch supports multiple camera modules based on FW_CONFIG.
BUG=b:251235140
TEST=Test the changes with ov2740/hi556 camera.
Signed-off-by: David Wu <david_wu@quanta.corp-partner.google.com>
Change-Id: I34dbf67634ecd364c40c6e934217af3d8efe1689
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68890
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jim Lai <jim.lai@intel.com>
Reviewed-by: Ricardo Ribalda <ribalda@google.com>
Reviewed-by: Ren Kuo <ren.kuo@quanta.corp-partner.google.com>
Fix readouts from the hardware monitor on Fintek F71808A Super I/O.
The HWM port is +5 to the base address stored in LDN 0x4 at index 0x60/0x61.
Referred to util/superiotool/winbond.c and the Linux kernel driver f71882fg.
Tested on a HP 500-319na (Memphis-S / IPM87-MP).
Signed-off-by: Ravi Mistry <rvstry@protonmail.com>
Change-Id: I2b2b98c62f9305c6f4885c2ce3b1444801dcb9d5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62060
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
The headers added are generated as per FSP v3361.07
In the future, when Alder Lake and Raptor Lake fsp align, Raptor Lake
fsp headers can be deleted and Raptor Lake soc will also use headers
from alderlake/ folder.
BUG=b:254054169
BRANCH=firmware-brya-14505.B
TEST=Boot to OS
Signed-off-by: Selma Bensaid <selma.bensaid@intel.com>
Change-Id: If486867477c88ad3e2ec5041ef94a0c364f5dfd6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68495
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Enable x86 SHA accelerator for use by VBOOT library. This is useful when
CBFS verification verifies the hash of the file being loaded in x86.
BUG=b:227809919
TEST=Build and boot to OS in Skyrim. Observe a boot time improvement of
~10 ms with CBFS verification enabled.
Change-Id: I14efe7be66f28f348330580d2e5733e11603a023
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68954
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Currently build rules allow using x86 SHA extensions for all coreboot
stages when enabled. On some SoCs where verstage can run in non-x86
environment, x86 SHA extension cannot be used. Update build rules
accordingly such that x86 SHA extensions can be used in AMD SoCs. This
is particularly useful when CBFS verificiation is enabled which verifies
the hash of the CBFS file being loaded.
BUG=b:227809919
TEST=Build and boot to OS in Skyrim. Observe that hardware acceleration
is used when a CBFS file is loaded and observe an overall improvement of
10 ms.
Change-Id: I4f388e963eb82990cda41d3880e66ad937334908
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68953
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kangheui Won <khwon@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
No need to call a function that just instantly returns.
It greatly enhances readability to just check before calling a funtion
and it also removes an extra argument.
Change-Id: I4d57c45ede520160ef615725c023b7e92289a995
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68592
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
RTD3,_ON method sometimes can create delays during system boot.
Even when the power is already up, kernel still tries to call _ON
method to power up device, but it's unnecessary.
RTD3._STA returns device power, so _ON method can check _STA and see
if the power on process can be skipped
BUG=b:249931687
TEST=system can boot to OS with RTD3 pcie storage and save ~80 ms on
Crota. Suspend stress test passes 100 cycles
Change-Id: I296ce1b85417a5dbaca558511cd7fc51a3a38c84
Signed-off-by: Kane Chen <kane.chen@intel.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69189
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
This patch implements a function to enable IOSF Primary Trunk Clock
Gating.
BUG=b:253210291
TEST=Able to build and boot rex to OS. Also needed for S0ix, tested
with Sandbox OS + Firmware combination for S0ix entry/exit.
Signed-off-by: Ravi Sarawadi <ravishankar.sarawadi@intel.com>
Change-Id: I02e191336e99f97f4db58b27f4414001b642ad02
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68430
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This contains the following commits:
* 835724d: mainboard/starlabs/starbook: Update the EC binaries
for StarLabs
* ecbe941: soc/mediatek: Update capitalization of coreboot
* 0e4444e: soc/mediatek/mt8188: Update MCUPM firmware from
v1.01.02 to v1.01.03
* 88570f6: mainboard/starlabs/starbook/adl: Update the EC binary
to 1.01 by Sean Rhodes
* f8e84db@ mainboard/starlabs/cezanne/starbook: Add EC binary
1.02 by Sean Rhodes
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I7afd43102718f211fe8d4fd69061dcdce5bfc323
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68587
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Enable the mirror flag for CML and TGL.
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I51678bdb8d876d238076e12c6315a53c5da59628
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68939
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
When enabled, the EC will mirror the firmware contained inside the
coreboot ROM. This allows it to be updated at the same time as
coreboot.
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: Ief088e012b65be32648f581fc3190e1000bca241
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68938
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Update section now that google/skyrim and google/guybrush implement
power sequencing and touchscreen runtime detection.
Change-Id: Ida63bebf18575d6856edfc65965ff82a4072df87
Signed-off-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69175
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Now that coreboot performs the necessary power sequencing, switch
from using the 'probed' flag to 'detect' for all I2C touchscreens.
This alleviates ChromeOS from having to probe to see which
touchscreen model is actually present, prevents breaking ACPI spec
by generating device entries with status 'enabled and present'
which aren't actually present, and improves compatibility with
upstream Linux and Windows.
BUG=b:121309055
TEST=build/boot ChromeOS and Linux on guybrush, ensure touchscreen is
functional, and ACPI device entry generated for correct touchscreen
model.
This mirrors the changes made for skyrim in CB:67779.
Change-Id: Ib6a76b969d3a245eccde5352231eb7e36736f2e0
Signed-off-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69199
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
As all variants have a touchscreen option, in baseboard table set the
enable GPIO high and hold in reset during romstage, then release reset
in ramstage. This will allow the touchscreen to make use of the runtime
I2C detect feature (enabled in a subsequent commit) so that an ACPI
device entry is created only for the touchscreen actually present.
Variants/SKUs which do not have a touchscreen (if any) can use the
romstage/ramstage GPIO override tables to set the associated enable/
reset GPIOs to NC.
This mirrors the change to skyrim in CB:67778.
BUG=b:121309055
TEST=build/boot guybrush with rest of patch series
Change-Id: I9b3356b8b3a0e68a307838a4b18775d25b32e548
Signed-off-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69178
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
The patch sets the EPP to 50% (0x80) for Vell. With EPP at 50%, the Vell
system demonstrated better power improvement without sacrificing the
performance.
PLT Results(Perf) with EPP@40% and EPP@50%:
EPP@40%: Device1-656 mins, Device2-664 mins.
EPP@50%: Device1-678 mins, Device2-677 mins.
In short, with EPP@50%, PLT KPI ran for more than 13 to 22mins compared
to EPP@40%.
Branch=firmware-brya-14505.B
BUG=b:215526166
TEST=Verified code build for Vell board
Signed-off-by: Sridhar Siricilla <sridhar.siricilla@intel.com>
Change-Id: I41b15b84025d25cf59dac2d85826a3de9d725bae
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68900
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Arthur Heymans