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2020-11-16src: Update some incorrect config options in commentsMartin Roth
This is a trivial patch to fix some comments that were generating notes in the kconfig lint test. Signed-off-by: Martin Roth <martin@coreboot.org> Change-Id: I26a95f17e82910f50c62215be5c29780fe98e29a Reviewed-on: https://review.coreboot.org/c/coreboot/+/47366 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Christian Walter <christian.walter@9elements.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-11-16src: Change bare 'unsigned' to 'unsigned int'Martin Roth
This fixes all of the current code in coreboot/src where a bare unsigned is used incorrectly. A follow-on will fix the comments so that we can enable the unsigned lint checker for src/coreboot. Signed-off-by: Martin Roth <martin@coreboot.org> Change-Id: I37f34a95bb1894e70cd9e076d4b81ebac665eaeb Reviewed-on: https://review.coreboot.org/c/coreboot/+/47482 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2020-11-12soc/intel/alderlake: Add PCH ID 0x5181Subrata Banik
List of changes: 1. Add new PCH ID 0x5181 into device/pci_ids.h 2. Update new PCH ID into common lpc.c 3. Add new PCH ID description into report_platform.c TEST=Able to build and boot ADLRVP with new PCH ID. Change-Id: I4343b7343876eb40c2955f6f4dd99d6446852dc0 Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47474 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-11-10cpu/x86/mtrr.h: Rename CORE2 alternative SMRR registersArthur Heymans
It is too easy to confuse those with IA32_SMRR_PHYS_x registers. Change-Id: Ice02ab6c0315a2be14ef110ede506262e3c0a4d5 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46896 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-11-09soc/amd/*/smi.h: Move the pm_acpi_smi_cmd_port function declarationArthur Heymans
This prototype will be used outside of soc/amd. Change-Id: Icc69cf8a910764b27edf64f0f527b8f6a9013121 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45813 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-11-09cpu/x86/smm: Add a common save state handlingArthur Heymans
Currently coreboot has limited use for the SMM save state. Typically the only thing needed is to get or set a few registers and to know which CPU triggered the SMI (typically via an IO write). Abstracting away different SMM save states would allow to put some SMM functionality like the SMMSTORE entry in common places. To save place platforms can select different SMM save sate ops that should be implemented. For instance AMD platforms don't need Intel SMM save state handling. Some platforms can encounter CPUs with different save states, which the code then handles at runtime by comparing the SMM save state revision which is located at the same offset for all SMM save state types. Change-Id: I4a31d05c09065543424a9010ac434dde0dfb5836 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44323 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-11-09console: Override uart base addressBryant Ou
Add a new CONFIG_OVERRIDE_UART_FOR_CONSOLE token to override the index of uart port, platform use a get_uart_for_console routine to decide what index value should be used for console. Signed-off-by: Bryant Ou <Bryant.Ou.Q@gmail.com> Change-Id: I2079bd1e5ffa209553383b6aafe3b8724849ba2a Reviewed-on: https://review.coreboot.org/c/coreboot/+/45405 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Marc Jones <marc@marcjonesconsulting.com> Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
2020-11-09device: Move pci_dev_is_wake_source functionTim Wawrzynczak
Move this function to pci_ops.c, which is already included in the smm build. This is required to use this function in elog functionality, which is called from SMM. Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Change-Id: Ie5583c04366c9a16bc1b00a6892d39eeafe5da49 Reviewed-on: https://review.coreboot.org/c/coreboot/+/47260 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
2020-11-09acpigen: Add more useful helper functionsDuncan Laurie
acpigen_write_debug_namestr() - Debug = NAME acpigen_write_return_namestr() - Return (NAME) acpigen_set_package_op_element_int() - Set package pointer element DeRefOf (PKG[ELEM]) = INT acpigen_get_package_element() - Get package (not pointer) element dest_op = PKG[ELEM] acpigen_set_package_element_int() - Set package element to integer PKG[ELEM] = INT acpigen_set_package_element_namestr() - Set package element to namestr PKG[ELEM] = NAME acpigen_write_delay_until_namestr_int() - Delay while waiting for register to equal expected value. BUG=b:160996445 Signed-off-by: Duncan Laurie <dlaurie@google.com> Change-Id: I9b20a23872b7d4a50f03761032426ffbb722b9ee Reviewed-on: https://review.coreboot.org/c/coreboot/+/47196 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-11-04acpi/acpi.h: Update region spacesElyes HAOUAS
Update operation region spaces according to ACPI Release 6.3 Errata A. Change-Id: I05305c96a2170eaf651d71ac79b67653745108a2 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46445 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2020-11-03include/list.h: Add support for GCC9+Patrick Rudolph
When getting the address of a structure's member that is not on offset 0, GCC9+ assumes that the address can never be NULL. However the code relied on the fact that it can be NULL by letting the pointer intentionally overflow. Manually calculate the address using uintptr_t. This allows to gracefully terminate the list_for_each MACRO instead of crashing at the end of the list. Tested on qemu-system-arm: coreboot no longer crashed in the devicetree parser and is able to boot Linux 5.5. Change-Id: I0d569b59a23d1269f8575fcbbe92a5a6816aa1f7 Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44573 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2020-11-02device: Rework bus master optionFelix Singer
As an intermediate step for CB:45150, add an additional Kconfig option which is used to configure bus mastering for any devices and use PCI_ALLOW_BUS_MASTER to allow coreboot setting the bus mastering bit in general. Change-Id: I33b37a79022007a16e97350db61575b63fa8256b Signed-off-by: Felix Singer <felix.singer@secunet.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45149 Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-11-02include/acpi: add defines for CPPC versions 1-3Michael Niewöhner
Change-Id: I6abbf98398057b9774fcfd9046ba933b5286e4cd Signed-off-by: Michael Niewöhner <foss@mniewoehner.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46986 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2020-11-02wifi: Drop PCI IDs for JfP and HrPFurquan Shaikh
This change drops the PCI IDs for Jefferson Peak and Harrison Peak CNVi modules from wifi/generic drivers as well as pci_ids.h. These IDs actually represent the CNVi WiFi controller PCI IDs and are now supported by intel/common/block/cnvi driver. The only ID that is being dropped without adding support in intel/common/block/cnvi driver is PCI_DEVICE_ID_HrP_6SERIES_WIFI(0x2720) since this was not found in the list of PCI IDs for any SoC. Change-Id: I82857a737b65a6baa94fb3c2588fe723412a7830 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46866 Reviewed-by: Subrata Banik <subrata.banik@intel.com> Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-11-02pci_ids: Add PCI IDs for CNVi WiFi/BT controllersFurquan Shaikh
This change adds PCI IDs for CNVi WiFi/BT controllers for CML, GLK, ICL, JSL and TGL. Change-Id: Id45f65d0ef5a7782c08ddd70eb22b26072c8ef4b Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46863 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
2020-10-31cpu/x86/lapic: rename virtual wire mode initialization functionFelix Held
Clarify what the function does by renaming it from do_lapic_init() to lapic_virtual_wire_mode_init(). Change-Id: Ie4430bf0f6c6bf0081b6aaeace351092bcf7f4ac Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47020 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-by: Nico Huber <nico.h@gmx.de>
2020-10-31cpu/intel/common: correct MSR for the Nominal Performance in CPPCMichael Niewöhner
The "Nominal Performance" is not the same as the "Guaranteed Performance", but is defined as the performance a processor can deliver continously under ideal environmental conditions. According to edk2, this is the "Maximum Non-Turbo Ratio", which needs to be read from MSR_PLATFORM_INFO instead of IA32_HWP_CAPABILITIES. Correct the entry in the CPPC package. Test: dumped SSDT from Supermicro X11SSM-F and checked decompiled version Change-Id: Ic2c27fd3e14af18aa4101c0acd7a5ede15d1f3a9 Signed-off-by: Michael Niewöhner <foss@mniewoehner.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46464 Reviewed-by: Subrata Banik <subrata.banik@intel.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-30lib/libpayload: Replace strapping_ids with new board configuration entryTim Wawrzynczak
There are currently 3 different strapping ID entries in the coreboot table, which adds overhead. The new fw_config field is also desired in the coreboot table, which is another kind of strapping id. Therefore, this patch deprecates the 3 current strapping ID entries (board ID, RAM code, and SKU ID), and adds a new entry ("board_config") which provides board ID, RAM code, SKU ID, as well as FW_CONFIG together. Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Change-Id: I1ecec847ee77b72233587c1ad7f124e2027470bf Reviewed-on: https://review.coreboot.org/c/coreboot/+/46605 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2020-10-30fw_config: Make fw_config_get() publicTim Wawrzynczak
Further patches will make use of this raw 64-bit value. Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Change-Id: I161893c09da6a44265299f6ae3c3a81249a96084 Reviewed-on: https://review.coreboot.org/c/coreboot/+/46604 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Julius Werner <jwerner@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-30fw_config: Convert fw_config to a 64-bit fieldTim Wawrzynczak
We all knew this was coming, 32 bits is never enough. Doing this early so that it doesn't affect too much code yet. Take care of every usage of fw_config throughout the codebase so the conversion is all done at once. BUG=b:169668368 TEST=Hacked up this code to OR 0x1_000_0000 with CBI-sourced FW_CONFIG and verify the console print contained that bit. Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Change-Id: I6f2065d347eafa0ef7b346caeabdc3b626402092 Reviewed-on: https://review.coreboot.org/c/coreboot/+/45939 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-30cbfs: Hook up to new CBFS implementationJulius Werner
This patch hooks coreboot up to the new commonlib/bsd CBFS implementation. This is intended as the "minimum viable patch" that makes the new implementation useable with the smallest amount of changes -- that is why some of this may look a bit roundabout (returning the whole metadata for a file but then just using that to fill out the rdevs of the existing struct cbfsf). Future changes will migrate the higher level CBFS APIs one-by-one to use the new implementation directly (rather than translated into the results of the old one), at which point this will become more efficient. Change-Id: I4d112d1239475920de2d872dac179c245275038d Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/38422 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-30drivers/soundwire/alc711: Add Realtek ALC711 soundwire deviceAnil Kumar
Bug=None Test=Enabled the device on TGLY RVP and tested that the codec is reflected in SSDT. Checked sound card binding works and soundwire drivers are enabled in kernel. Signed-off-by: Anil Kumar <anil.kumar.k@intel.com> Change-Id: Ia7358927fe8531e609ebe070bef259a2bbc09093 Reviewed-on: https://review.coreboot.org/c/coreboot/+/46303 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com> Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
2020-10-29soc/intel/xeon_sp: Move function debug macrosMarc Jones
Move the macros for printing debug information to debug.h in the common console include directory and device include file. These are available if the platform selects DEFAULT_CONSOLE_LOGLEVEL_8. The macros could be used by any platform. Change-Id: Ie237bdf8cdc42c76f38a0c820fdc92e81095f47c Signed-off-by: Marc Jones <marcjones@sysproconsulting.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46093 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2020-10-29include/device/device.h: Move resource debug macrosMarc Jones
Add general debug macros that print resource information. These are available to select if DEFAULT_CONSOLE_LOGLEVEL_8. The macros are helpful in debugging complex resource allocation with multiple buses. The macros are moved from soc/intel/xeon_sp, where they were originally developed. Change-Id: I2bdab7770ca5ee5901f17a8af3a9a1001b6702e4 Signed-off-by: Marc Jones <marcjones@sysproconsulting.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46304 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2020-10-26arch/x86/smbios: Populate SMBIOS type 7 with cache informationMorgan Jang
SMBIOS has a field to display the cache size, which is currently set to UNKNOWN unconditionally, multiply the cache size of L1 and L2 by the number of cores. TEST=Execute "dmidecode -t 7" to check if the cache information is correct for Deltalake platform Change-Id: Ieeb5d3346454ffb2291613dc2aa24b31d10c2e04 Signed-off-by: Morgan Jang <Morgan_Jang@wiwynn.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46068 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Jonathan Zhang <jonzhang@fb.com> Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-26src: Include <arch/io.h> when appropriateElyes HAOUAS
Change-Id: I4077b9dfeeb2a9126c35bbdd3d14c52e55a5e87c Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45404 Reviewed-by: Frans Hendriks <fhendriks@eltan.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-26include/device/azalia_device: Fix typoPatrick Rudolph
Change-Id: Iee2ffb3b5170cd4c630f2b26d1eb418b239a8e23 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46629 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-24cpu/intel/common: rework code previously moved to common cpu codeMichael Niewöhner
Rework the code moved to common code in CB:46274. This involves simplification by using appropriate helpers for MSR and CPUID, using macros instead of plain values for MSRs and cpu features and adding documentation to the header. Change-Id: I7615fc26625c44931577216ea42f0a733b99e131 Signed-off-by: Michael Niewöhner <foss@mniewoehner.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46588 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2020-10-24{cpu,soc}/intel: deduplicate cpu codeMichael Niewöhner
Move a whole bunch of copy-pasta code from soc/intel/{bdw,skl,cnl,icl, tgl,ehl,jsl,adl} and cpu/intel/{hsw,model_*} to cpu/intel/common. This change just moves the code. Rework is done in CB:46588. Change-Id: Ib0cc834de8492d59c423317598e1c11847a0b1ab Signed-off-by: Michael Niewöhner <foss@mniewoehner.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46274 Reviewed-by: Felix Singer <felixsinger@posteo.net> Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-22drivers/smmstore: Implement SMMSTORE version 2Patrick Rudolph
SMMSTORE version 2 is a complete redesign of the current driver. It is not backwards-compatible with version 1, and only one version can be used at a time. Key features: * Uses a fixed communication buffer instead of writing to arbitrary memory addresses provided by untrusted ring0 code. * Gives the caller full control over the used data format. * Splits the store into smaller chunks to allow fault tolerant updates. * Doesn't provide feedback about the actual read/written bytes, just returns error or success in registers. * Returns an error if the requested operation would overflow the communication buffer. Separate the SMMSTORE into 64 KiB blocks that can individually be read/written/erased. To be used by payloads that implement a FaultTolerant Variable store like TianoCore. The implementation has been tested against EDK2 master. An example EDK2 implementation can be found here: https://github.com/9elements/edk2-1/commit/eb1127744a3a5d5c8ac4e8eb76f07e79c736dbe2 Change-Id: I25e49d184135710f3e6dd1ad3bed95de950fe057 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Signed-off-by: Christian Walter <christian.walter@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40520 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Michał Żygowski <michal.zygowski@3mdeb.com> Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
2020-10-21acpigen: Make acpigen_write_opregion() argument constDuncan Laurie
This structure is not modified so it can be made const and allow the calling function to also declare it as a const structure. Signed-off-by: Duncan Laurie <dlaurie@google.com> Change-Id: Id8cdfb4b3450a5ab2164ab048497324175b32269 Reviewed-on: https://review.coreboot.org/c/coreboot/+/46258 Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-21acpigen: Make gpio set/get arguments constDuncan Laurie
The 'struct acpi_gpio' arguments passed to acpigen functions are not modified so they can be made const, which allows drivers to also use a const pointer. Signed-off-by: Duncan Laurie <dlaurie@google.com> Change-Id: I59e9c19e7bfdca275230776497767ddc7f6c52db Reviewed-on: https://review.coreboot.org/c/coreboot/+/46257 Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-21acpigen: Add ShiftLeft function helperDuncan Laurie
Provide a helper function for the ACPI shift left operator that uses the same operator for the source and result. ShiftLeft (OP, count, OP) Signed-off-by: Duncan Laurie <dlaurie@google.com> Change-Id: I66ee89bd1c4be583d0e892b02535bfa9514d488a Reviewed-on: https://review.coreboot.org/c/coreboot/+/46256 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-21acpigen: Add helpers for common Store operationsDuncan Laurie
Add helpers for some store operations: Store(INTEGER, NAME) ex: Store (100, SAVE) Store(INTEGER, OP) ex: Store (100, Local0) Change-Id: Ia1b3f451acbfb2fc50180a8dcd96db24d330c946 Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46255 Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-21acpigen: Add option for reserved bits in FieldDuncan Laurie
Add an option for unused/reserved bits in a Field definition, allowing for declarations that do not start at bit 0: Field (UART, AnyAcc, NoLock, Preserve) { , 7, /* RESERVED */ BITF, /* Used bit */ } These just use byte 0 instead of a name. Change-Id: I86b54685dbdebacb0834173857c9341ea9fa9a46 Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46254 Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-21device: Export enable_static_device() functionDuncan Laurie
The work done by enable_static_devices() and scan_generic_bus() is common and can be used by other device handlers to enable a single static device. Signed-off-by: Duncan Laurie <dlaurie@google.com> Change-Id: Ibfde9c4eb794714ebd9800e52b91169ceba15266 Reviewed-on: https://review.coreboot.org/c/coreboot/+/46541 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2020-10-21{cpu,soc}/intel: replace AES-NI locking by common implemenation callMichael Niewöhner
Deduplicate code by using the new common cpu code implementation of AES-NI locking. Change-Id: I7ab2d3839ecb758335ef8cc6a0c0c7103db0fa50 Signed-off-by: Michael Niewöhner <foss@mniewoehner.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46278 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2020-10-19cpu/intel/common: rework AES-NI lockingMichael Niewöhner
Simplify the AES-NI code by using msr_set and correct the comment. Change-Id: Ib2cda433bbec0192277839c02a1862b8f41340cb Signed-off-by: Michael Niewöhner <foss@mniewoehner.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46275 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2020-10-19soc/intel/skl,cpu/intel: copy AES-NI locking to common cpu codeMichael Niewöhner
Copy the AES-NI locking function to common cpu code to be able to reuse it. This change only copies the code and adds the MSR header file. Any further rework and later deduplication on the platforms code is done in the follow-up changes. Change-Id: I81ad5c0d4797b139435c57d3af0a95db94a5c15e Signed-off-by: Michael Niewöhner <foss@mniewoehner.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46272 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2020-10-19lib/imd: move struct definitions to a new header fileJakub Czapiga
Make IMD private structures definitions accessible by other units. To test IMD API correctness there is a need to access its internal structure. It is only possible when private implementation is visible in testing scope. Signed-off-by: Jakub Czapiga <jacz@semihalf.com> Change-Id: Iff87cc1990426bee6ac3cc1dfa6f85a787334976 Reviewed-on: https://review.coreboot.org/c/coreboot/+/46216 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
2020-10-16include/cpu/x86: introduce new helper for (un)setting MSRsMichael Niewöhner
msr_set_bit can only set single bits in MSRs and causes mixing of bit positions and bitmasks in the MSR header files. Thus, replace the helper by versions which can unset and set whole MSR bitmasks, just like the "and-or"-helper, but in the way commit 64a6b6c was done (inversion done in the helper). This helps keeping the MSR macros unified in bitmask style. In sum, the three helpers msr_set, msr_unset and msr_unset_and_set get added. The few uses of msr_set_bit have been replaced by the new version, while the used macros have been converted accordingly. Change-Id: Idfe9b66e7cfe78ec295a44a2a193f530349f7689 Signed-off-by: Michael Niewöhner <foss@mniewoehner.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46354 Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-15lib and libpayload: Add popcnt functionsAngel Pons
Add 32-bit `popcnt` and 64-bit `popcnt64` helpers. Change-Id: I2e6a1007e475b662a85c067d96f81326e7f02905 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46421 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2020-10-15Update bit field helpers to support more bit field operateHuayang Duan
Signed-off-by: Huayang Duan <huayang.duan@mediatek.com> Change-Id: I8f182fff45806912da2390939a6652932501d7c5 Reviewed-on: https://review.coreboot.org/c/coreboot/+/44705 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Hung-Te Lin <hungte@chromium.org>
2020-10-14lib and libpayload: add 64-bit versions of clz, __ffs and log2Tim Wawrzynczak
Add 64-bit versions of clz, __ffs & log2: `__ffs64`, `__clz64`, and `log2_64`. Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Change-Id: Iefc6e6c51f5b20607c88e38660a499a4f77ce0d0 Reviewed-on: https://review.coreboot.org/c/coreboot/+/45938 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2020-10-14acpi/device: Add GPIO binding property for an array of GPIOsKarthikeyan Ramasubramanian
This change is required for use-cases like GPIO based I2C multiplexer where more than one GPIOs are used as select lines. BUG=b:169444894 TEST=Build and boot waddledee to OS. Ensure that the GPIO bindings for an array of GPIOs are added to the ACPI table as follows: Device (MUX0) { ... Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings { GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly, "\\_SB.PCI0.GPIO", 0x00, ResourceConsumer, , ) { // Pin list 0x0125 } GpioIo (Exclusive, PullDefault, 0x0000, 0x0000, IoRestrictionOutputOnly, "\\_SB.PCI0.GPIO", 0x00, ResourceConsumer, , ) { // Pin list 0x0126 } }) Name (_DSD, Package (0x02) // _DSD: Device-Specific Data { ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301") /* Device Properties for _DSD */, Package (0x01) { Package (0x02) { "mux-gpios", Package (0x08) { \_SB.PCI0.I2C3.MUX0, Zero, Zero, Zero, \_SB.PCI0.I2C3.MUX0, One, Zero, Zero } } } }) } Change-Id: I7c6cc36b1bfca2d48c84f169e6b43fd4be8ba330 Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46056 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2020-10-13include/acpi/acpi.h: Add ACPI_DSDT_REV_1 macroElyes HAOUAS
Change-Id: Ie044f786e5deae3a1317091de67dc03c74531bfb Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45786 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2020-10-13src: Rename EM100Pro-specific SPI console Kconfig optionAngel Pons
To avoid confusion with `flashconsole` (CONSOLE_SPI_FLASH), prefix this option with `EM100Pro`. Looks like it is not build-tested, however. Change-Id: I4868fa52250fbbf43e328dfd12e0e48fc58c4234 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45973 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
2020-10-13include/acpi/acpi.h: Introduce ACPI_DSDT_REV_2 macroElyes HAOUAS
This to replace DSDT revison number with macro so we can adapt all boards at once if needed. Change-Id: I9e92a5f408f69aa1a6801bc2cba8ddfe2180b040 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45751 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2020-10-12arch/x86/smbios: Update SMBIOS type 0 ec versionTim Chu
Update embedded controller firmware version for SMBIOS type 0. TEST=Execute "dmidecode -t 0" to check if the ec version is correct Signed-off-by: Tim Chu <Tim.Chu@quantatw.com> Change-Id: Ibd5ee27a1b8fa4e5bc66e359d3b62e052e19e8a2 Reviewed-on: https://review.coreboot.org/c/coreboot/+/45138 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jonathan Zhang <jonzhang@fb.com> Reviewed-by: Patrick Rudolph <siro@das-labor.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2020-10-11pci_device: Add a helper function for determining if PCI device is wake sourceFurquan Shaikh
This change adds a helper function `pci_dev_is_wake_source()` that checks PME_STATUS and PME_ENABLE bits in PM control and status register to determine if the given device is the source of wake. BUG=b:169802515 BRANCH=zork Change-Id: I06e9530b568543ab2f05a4f38dc5c3a527ff391e Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46030 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Rob Barnes <robbarnes@google.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2020-10-09mrc_cache: Change mrc_cache_load_current to return size of entryShelley Chen
Modify mrc_cache_load current to return the size of the mrc_cache entry so that caller will know what the actual size of the data returned is. This is needed for ARM devices like trogdor, which need to know the size of the training data when populating the QcLib interface table. BUG=b:150502246 BRANCH=None TEST=./util/abuild/abuild -p none -t GOOGLE_NAMI -x -a Change-Id: Ia314717ad2a7d5232b37a19951c1aecd7f843c27 Signed-off-by: Shelley Chen <shchen@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46110 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2020-10-08device: Clarify use of `config_of()`Nico Huber
We don't want unnecessary die() calls to spread throughout coreboot. Chances are high that we'd add a NON_FATAL_DIE Kconfig eventually. Change-Id: I01c7efdf23672bad3a195b7dc1565a3cc8a087bd Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46046 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Werner Zeh <werner.zeh@siemens.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-10-08rules.h: change verstage name if it starts before bootblockKangheui Won
VBOOT_STARTS_VEFORE_BOOTBLOCK indicates that verstage starts before bootblock. However "cbmem -1" will first try to match "bootblock starting" to find out the beginning of console for current boot. Change ENV_STRING for verstage to "verstage-before-bootblock" in the case and add regex in cbmem utility to grab it. BUG=b:159220781 TEST=flash and boot, check `cbmem -1` BRANCH=zork Signed-off-by: Kangheui Won <khwon@chromium.org> Change-Id: Ica38f6bfeb05605caadac208e790fd072b352732 Reviewed-on: https://review.coreboot.org/c/coreboot/+/46060 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com> Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
2020-10-05soc: move mainboard_get_dram_part_num prototype to memory_info.hNick Vaccaro
BUG=b:169774661, b:168724473 TEST="emerge-volteer coreboot && emerge-nocturne coreboot && emerge-dedede coreboot" and verify they build successfully. Change-Id: I8b228475621ca1035fe13f8311355fc3b926e897 Signed-off-by: Nick Vaccaro <nvaccaro@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45879 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2020-09-29soc/intel/jasperlake: Add IGD, MCH Device IDKrishna Prasad Bhat
Add IGD Device ID and MCH Device ID for Jasperlake. Reference is taken from Jasperlake EDS volume 1(Document Number: 613601). TEST=Build and boot Jasperlake platform. Change-Id: I00ee7950ffa378b428a76bf367a9a05ab287e7ed Signed-off-by: Krishna Prasad Bhat <krishna.p.bhat.d@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45481 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aamir Bohra <aamir.bohra@intel.com> Reviewed-by: V Sowmya <v.sowmya@intel.com> Reviewed-by: Subrata Banik <subrata.banik@intel.com>
2020-09-29cpu/x86/smm/smmhandler.c: Get revision using C codeArthur Heymans
This allows to remove some assembly code. Tested with QEMU Q35 to still print the revision correctly. Change-Id: I36fb0e8bb1f46806b11ef8102ce74c0d10fd3927 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44319 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2020-09-28include/cpu/x86/tsc: Fix rdtsc on x86_64Patrick Rudolph
The used assembler code only works on x86_32, but not on x86_64. Use the inline functions to provide valid rdtsc readings on both x86_32 and x86_64. Tested on Lenovo T410 with additional x86_64 patches. Change-Id: Icf706d6fb751372651e5e56d1856ddad688d9fa3 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45702 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2020-09-28azalia_device.h: Add new macro to configure pins as NCFelix Singer
Change-Id: I740d0d756599688165458a9c6e925d5d94754bb2 Signed-off-by: Felix Singer <felix.singer@secunet.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45604 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-09-25soc/amd/picasso: Generate ACPI pstate and cstate objects in cbJason Glenesk
Add code to generate p-state and c-state SSDT objects to coreboot. Publish objects generated in native coreboot, rather than the ones created by FSP binary. BUG=b:155307433 TEST=Boot morphius to shell and extract and compare objects created in coreboot with tables generated by FSP. Confirm they are equivalent. BRANCH=Zork Change-Id: I5f4db3c0c2048ea1d6c6ce55f5e252cb15598514 Signed-off-by: Jason Glenesk <jason.glenesk@amd.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45340 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Raul Rangel <rrangel@chromium.org>
2020-09-24soc/intel/common/smbus: Add support for Apollo Lake SoCMaxim Polyakov
Previously, SMBUS support was not required for Apollo Lake, since the SPD was read inside FSP-M, during memory initialization. However, the Kontron mAL-10 COMe module contains Nuvoton HWM chip that is connected to the processor via SMBUS. This patch adds SMBUS common driver support for Apollo Lake to initialize this HWM. TEST = After loading the nct7802 module on the Kontron mAL-10 with Linux OS, we can read the hwm registers, see temperature and fan speed: coretemp-isa-0000 Adapter: ISA adapter Package id 0: +52.0°C (high = +110.0°C, crit = +110.0°C) Core 0: +52.0°C (high = +110.0°C, crit = +110.0°C) Core 1: +52.0°C (high = +110.0°C, crit = +110.0°C) Core 2: +53.0°C (high = +110.0°C, crit = +110.0°C) Core 3: +53.0°C (high = +110.0°C, crit = +110.0°C) nct7802-i2c-0-2e Adapter: SMBus CMI adapter cmi in0: +3.35 V (min = +0.00 V, max = +4.09 V) in1: +1.92 V in3: +1.21 V (min = +0.00 V, max = +2.05 V) in4: +1.68 V (min = +0.00 V, max = +2.05 V) fan1: 0 RPM (min = 0 RPM) fan2: 1729 RPM (min = 0 RPM) fan3: 0 RPM (min = 0 RPM) temp1: +53.5°C (low = +0.0°C, high = +85.0°C) (crit = +100.0°C) sensor = thermistor temp4: +53.0°C (low = +0.0°C, high = +85.0°C) (crit = +100.0°C) temp6: +0.0°C Change-Id: I408ef84ede27a45fb057e22b2757fa6e66277ddd Signed-off-by: Maxim Polyakov <max.senia.poliak@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44475 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Werner Zeh <werner.zeh@siemens.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-09-22acpi: Add SSDT pstate helper functionsJason Glenesk
Add new generic helper functions for PSS, PCT, XPSS, objects. BUG=b:155307433 TEST=Boot Morphius and dump SSDT. Confirm PSS and PCT objects appear as expected and conform to ACPI_6_3_May16.pdf ACPI specification. Check XPSS against Microsoft "Extended PSS ACPI Method Specification" XPSS_spec.doc April 2, 2007. BRANCH=Zork Change-Id: I1ea218bcee33093481e82390550ff96d9d2cb8b5 Signed-off-by: Jason Glenesk <jason.glenesk@amd.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45437 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Raul Rangel <rrangel@chromium.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
2020-09-22src/lib/bootblock.c: make bootblock_main_with_timestamp publicKangheui Won
bootblock_main_with_timestamp function allows to proceed with existing timestamp table. Apparently we never needed this, but Zork runs verstage in the PSP before bootblock. It'd be useful if we can grab timestamps for verstage from PSP and merge with coreboot timestamps. Making it non-static will enable us to do that. BUG=b:154142138, b:159220781 BRANCH=zork TEST=build firmware for zork Change-Id: I061c3fbb652c40bafa0a007aa75f2a82680f5e0a Signed-off-by: Kangheui Won <khwon@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45468 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2020-09-21cpu/x86/smm.h: Add function to return the SMM save state revisionArthur Heymans
Change-Id: I3e4450088adbb654050e7420956cf58ee1170a98 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44318 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-09-18drivers/genesyslogic/gl9755: Add driver for Genesys Logic GL9755Ben Chuang
The device is a PCIe Gen2 to SD 4.0 card reader controller to be used in the Chromebook. The datasheet name is GL9755S and the revision is 05. The patch sets LTR value. Signed-off-by: Ben Chuang <benchuanggli@gmail.com> Change-Id: I16048dde348be248c748d50ca4a8a62c8a781430 Reviewed-on: https://review.coreboot.org/c/coreboot/+/45062 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2020-09-18src/include: Add PnP/HWM unset_and_set functionsAngel Pons
RMW (read/modify/write) ops on PnP devices has never been so simple. The semantics also allow the compiler to emit valid warnings if the input parameters would overflow, which are silenced when the cast is placed outside of the function. Change-Id: Ica01211af2a9a00aed98880844a836f6b7957b14 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/42134 Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-09-17src: Remove redundant <device/pnp_type.h>Elyes HAOUAS
When <device/pnp.h> is needed, it is supposed to provide <device/pnp_type.h>. Change-Id: I0e479e2abdb6cfb8633840db2222ce5397fe7d55 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45403 Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-09-17src: Remove redundant <device/pnp_def.h>Elyes HAOUAS
When <device/pnp.h> is needed, it is supposed to provide <device/pnp_def.h>. So remove redundant <device/pnp_def.h> includes. I'll remove also <device/pnp_type.h> in a separate patch. Change-Id: Ib9903ae456c32db4ba346020659c17c27a939e89 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45316 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Wim Vervoorn <wvervoorn@eltan.com> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
2020-09-16region_file_update_data_arr: Modify region_file with array of buffersShelley Chen
Add region_file_update_data_arr, which has the same functionality as region_file_update_data, but accepts mutliple data buffers. This is useful for when we have the mrc_metadata and data in non-contiguous addresses, which is the case when we bypass the storing of mrc_cache data into the cbmem. BUG=b:150502246 BRANCH=None TEST=reboot from ec console. Make sure memory training happens. reboot from ec console. Make sure that we don't do training again. Change-Id: Ia530f7d428b9b07ce3a73e348016038d9daf4c15 Signed-off-by: Shelley Chen <shchen@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45407 Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-09-16device/dram: Add method for converting MHz to MT/sRob Barnes
Add method for converting DDR4 speed in MHz to MT/s. Checks that MHz is within a speed grade range. BUG=b:167155849 TEST=ddr4-test unit test BRANCH=Zork Change-Id: I1433f028afb794fe3e397b03f5bd0565494c8130 Signed-off-by: Rob Barnes <robbarnes@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45343 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2020-09-14src/{device,include}: Use PNP_IDX_EN instead of magic numberElyes HAOUAS
Change-Id: I68590605e261ecaace9f3cea28cfa6ec3b913a8a Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44835 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
2020-09-14src/include: Drop unneeded empty linesElyes HAOUAS
Change-Id: Ie325541547ea10946f41a8f979d144a06a7e80eb Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44611 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
2020-09-14include/superio/hwm5_conf.h: Fix copy-pasted commentsAngel Pons
Comments say `port`, but the actual function signature uses `base`. Change-Id: I28a2f24a9701aec2fb990ca2f38e5f2794e15f0c Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45226 Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-09-14soc/intel/common/cpu: Update COS mask calculation for NEM enhanced modeAamir Bohra
Update the COS mask calculation to accomodate the RW data as per SoC configuration. Currently only one way is allocated for RW data and configured for non-eviction. For earlier platform this served fine, and could accomodate a RW data up to 256Kb. Starting TGL and JSL, the DCACHE_RAM_SIZE is configured for 512Kb, which cannot be mapped to a single way. Hence update the number of ways to be configured for non- eviction as per total LLC size. The total LLC size/ number of ways gives the way size. DCACHE_RAM_SIZE/ way size gives the number of ways that need to be configured for non- eviction, instead of harcoding it to 1. TGL uses MSR IA32_CR_SF_QOS_MASK_1(0x1891) and IA32_CR_SF_QOS_MASK_2(0x1892) as COS mask selection register and hence needs to be progarmmed accordingly. Also JSL and TGL platforms the COS mask selection is mapped to bit 32:33 of MSR IA32_PQR_ASSOC(0xC8F) and need to be updated in edx(maps 63:32) before MSR write instead of eax(maps 31:0). This implementation corrects that as well. BUG=b:149273819 TEST= Boot waddledoo(JSL), hatch(CML), Volteer(TGL)with NEM enhanced CAR configuration. Signed-off-by: Aamir Bohra <aamir.bohra@intel.com> Change-Id: I54e047161853bfc70516c1d607aa479e68836d04 Reviewed-on: https://review.coreboot.org/c/coreboot/+/43494 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Shreesh Chhabbi <shreesh.chhabbi@intel.corp-partner.google.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2020-09-12include/console/uart: make index parameter unsignedFelix Held
The UART index is never negative, so make it unsigned and drop the checks for the index to be non-negative. Change-Id: I64bd60bd2a3b82552cb3ac6524792b9ac6c09a94 Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45294 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2020-09-11device: Fix incompatible-pointer-types build errorSubrata Banik
The build error `incompatible-pointer-types` occurs while using `pci_dev_request_bus_master` as part of device ops Signed-off-by: Subrata Banik <subrata.banik@intel.com> Change-Id: I3b1ce85b8db1ddf9ac860415edbe64694b91b3d1 Reviewed-on: https://review.coreboot.org/c/coreboot/+/45122 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-09-08pci_ids: Add Alder Lake DTT PCI IDsSubrata Banik
Add PCI IDs for Intel's Dynamic Tuning Technology (DTT) for ADL. Also add NULL terminator at end of pci_device_ids. Change-Id: If25b1f562567a833683b0b8796bd1d6cac0bd490 Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45140 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-09-08pci_ids: Add Alder Lake IPU PCI IDsSubrata Banik
Add PCI IDs for Intel's Image Processing Unit (IPU) for ADL. Also add NULL terminator at end of pci_device_ids. Change-Id: I327828d676422fc6162fadffd9b39529ecb89ace Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45139 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2020-09-08soc/intel/elkhartlake: Add CPU, SA, PCH & IGD DIDs TableTan, Lean Sheng
1. Add CPU, SA, PCH & IGD DIDs table into report_platform.c 2. Add additional EHL SA DID in pci_ids.h Signed-off-by: Tan, Lean Sheng <lean.sheng.tan@intel.com> Change-Id: I5c98089873b17f82560eba13c7de3353b6d3e249 Reviewed-on: https://review.coreboot.org/c/coreboot/+/45074 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
2020-09-08cpu/x86: Add definition for SMRR_PHYS_MASK_LOCKTim Wawrzynczak
The IA32_SMRR_PHYS_MASK MSR contains a 'Lock' bit, which will cause the core to generate a #GP if the SMRR_BASE or SMRR_MASK registers are written to after the Lock bit is set; this is helpful with securing SMM. BUG=b:164489598 Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Change-Id: I784d1d1abec0a0fe0ee267118d084ac594a51647 Reviewed-on: https://review.coreboot.org/c/coreboot/+/44991 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Caveh Jalali <caveh@chromium.org> Reviewed-by: Subrata Banik <subrata.banik@intel.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2020-09-07ec/system76: Add console supportJeremy Soller
This adds support for line-buffered console output to System76 EC firmware. Once the print command is received, the EC firmware multiplexes the output to any enabled console on the EC. This can be a memory ringbuffer, a parallel port (using the keyboard connector), or i2c (using the battery connector). Once the entire buffer is sent, it sets the command register to 0, indicating completion. For more information, please see: https://github.com/system76/ec/blob/master/doc/debugging.md Tested on system76/lemp9 with CONSOLE_SYSTEM76_EC enabled. Signed-off-by: Jeremy Soller <jeremy@system76.com> Change-Id: I861bf3e22f40dd6c3ec7ba1d73711b399358e332 Reviewed-on: https://review.coreboot.org/c/coreboot/+/43718 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Michael Niewöhner
2020-09-03memory_info: add max_speed_mts and configured_speed_mtsRob Barnes
ddr_frequency is ambiguous and is interpreted differently in several places. Instead of renaming this field, this deprecates it and adds two new fields with unambiguous naming, max_speed_mts and configured_speed_mts. smbios.c falls back to using ddr_frequency when either of these fields are 0. The same value was being used for both configured memory speed and max memory speed in SMBIOS type 17, which is not accurate when configured speed is not the max speed. BUG=b:167218112 TEST=Boot ezkinil, no change to dmidecode -t17 Change-Id: Iaa75401f9fc33642dbdce6c69bd9b20f96d1cc25 Signed-off-by: Rob Barnes <robbarnes@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44549 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Raul Rangel <rrangel@chromium.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Jack Rosenthal <jrosenth@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-09-01{include,mb,soc,sb,vendorcode}: Make hexadecimal notation consistentSubrata Banik
Convert 0X -> 0x Signed-off-by: Subrata Banik <subrata.banik@intel.com> Change-Id: Iea3ca67908135d0e85083a05bad2ea176ca34095 Reviewed-on: https://review.coreboot.org/c/coreboot/+/44926 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2020-08-31device: Add method to configure bus mastering based on KconfigFelix Singer
The bus master bit is set at many places in coreboot's code, but the reason for that is not quite clear. We examined not setting the bus master bit whereever possible and tried booting without it, which worked fine for internal PCI devices but not for PCIe. As a PCIe device we used a Samsung M.2 NVMe SSD. For security reasons, we would like to disable bus mastering where possible. Depending on the device, bus mastering might get enabled by the operating system (e.g. for iGPU) and it might be required for some devices to work properly. However, the idea is to leave it disabled and configure the IOMMU first before enabling it. To have some sort of "backwards compatibility", add a method which configures bus mastering based on an additional config option. Since CB:42460 makes usage of this treewide, enable it by default to keep the current behaviour for now. Tested with Siemens/Chili, a Coffee Lake based platform. Change-Id: I876c48ea3fb4f9cf7b6a5c2dcaeda07ea36cbed3 Signed-off-by: Felix Singer <felix.singer@secunet.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/42459 Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Subrata Banik <subrata.banik@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-08-31include/device/azalia_device: Fix typoPatrick Rudolph
The code using the macro was found not working after finally enabling the HDA PCI device on the hermes board. Fix a typo to generate the correct verbs. Tested on prodrive/hermes. Change-Id: I953c2e9fbebc1f02bdf71ce868a95f578300c3a1 Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44900 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Christian Walter <christian.walter@9elements.com> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-08-31fw_config: Add caching to successfully probed fieldsTim Wawrzynczak
Add a backing cache for all successfully probed fw_config fields that originated as `probe` statements in the devicetree. This allows recall of the `struct fw_config` which was probed. BUG=b:161963281 TEST=tested with follower patch Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Change-Id: I0d014206a4ee6cc7592e12e704a7708652330eaf Reviewed-on: https://review.coreboot.org/c/coreboot/+/44782 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2020-08-31{intel/gma,include/device}: Delete unused 'drm_dp_helper.h' fileElyes HAOUAS
'drm_dp_helper.h' file is duplicated and not used. Change-Id: Ibb08f7ff91c3914940dfe899be331b06e292c7c9 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44842 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2020-08-29PCI IDs: Add PCI ID for CML DPTF/DTT PCI deviceEdward O'Callaghan
This PCI ID is required in order for the CML devices to perform SSDT generation for DPTF. CML Processor, EDS, Vol 1, Table 9-5, Section 9.2. BUG=b:158986928 BRANCH=puff TEST=builds Signed-off-by: Edward O'Callaghan <quasisec@google.com> Change-Id: I94aea6b9e0f60656827daada7b2cc2741604b8b3 Reviewed-on: https://review.coreboot.org/c/coreboot/+/44902 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Sam McNally <sammc@google.com> Reviewed-by: Daniel Kurtz <djkurtz@google.com> Reviewed-by: Andrew McRae <amcrae@google.com>
2020-08-27symbols: Change implementation details of DECLARE_OPTIONAL_REGION()Julius Werner
It seems that GCC's LTO doesn't like the way we implement DECLARE_OPTIONAL_REGION(). This patch changes it so that rather than having a normal DECLARE_REGION() in <symbols.h> and then an extra DECLARE_OPTIONAL_REGION() in the C file using it, you just say DECLARE_OPTIONAL_REGION() directly in <symbols.h> (in place and instead of the usual DECLARE_REGION()). This basically looks the same way in the resulting object file but somehow LTO seems to like it better. Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: I6096207b311d70c8e9956cd9406bec45be04a4a2 Reviewed-on: https://review.coreboot.org/c/coreboot/+/44791 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jacob Garber <jgarber1@ualberta.ca> Reviewed-by: Hung-Te Lin <hungte@chromium.org> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
2020-08-27soc/intel/common: Include Elkhart Lake SA IDsTan, Lean Sheng
Add additional Elkhart Lake specific SA IDs. Signed-off-by: Lean Sheng Tan <lean.sheng.tan@intel.com> Change-Id: I41af9b17b8121f3b47f2242d9beeec297893b378 Reviewed-on: https://review.coreboot.org/c/coreboot/+/40854 Reviewed-by: Subrata Banik <subrata.banik@intel.com> Reviewed-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com> Reviewed-by: Praveen HP <praveen.hodagatta.pranesh@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-08-26include/imd: Improve API documentationJan Dabros
Signed-off-by: Jan Dabros <jsd@semihalf.com> Change-Id: I8261c7d933435ba9f29fc3172cdfe8bcae5c1af9 Reviewed-on: https://review.coreboot.org/c/coreboot/+/44664 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
2020-08-24mrc_cache: Add mrc_cache fetch functions to support non-x86 platformsShelley Chen
Create two new functions to fetch mrc_cache data (replacing mrc_cache_get_current): - mrc_cache_load_current: fetches the mrc_cache data and drops it into the given buffer. This is useful for ARM platforms where the mmap operation is very expensive. - mrc_cache_mmap_leak: fetch the mrc_cache data and puts it into a given buffer. This is useful for platforms where the mmap operation is a no-op (like x86 platforms). As the name mentions, we are not freeing the memory that we allocated with the mmap, so it is the caller's responsibility to do so. Additionally, we are replacing mrc_cache_latest with mrc_cache_get_latest_slot_info, which does not check the validity of the data when retrieving the current mrc_cache slot. This allows the caller some flexibility in deciding where they want the mrc_cache data stored (either in an mmaped region or at a given address). BUG=b:150502246 BRANCH=None TEST=Testing on a nami (x86) device: reboot from ec console. Make sure memory training happens. reboot from ec console. Make sure that we don't do training again. Signed-off-by: Shelley Chen <shchen@google.com> Change-Id: I259dd4f550719d821bbafa2d445cbae6ea22e988 Reviewed-on: https://review.coreboot.org/c/coreboot/+/44006 Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-08-24soc/amd/picasso: Add console & timestamp buffers to psp_verstageMartin Roth
Create areas for console & timestamp data in psp_verstage and pass it to the x86 to save for use later. BUG=b:159220781 TEST=Build & Boot trembyle Signed-off-by: Martin Roth <martin@coreboot.org> Change-Id: I41c8d7a1565e761187e941d7d6021805a9744d06 Reviewed-on: https://review.coreboot.org/c/coreboot/+/42830 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Raul Rangel <rrangel@chromium.org>
2020-08-21lib: Update fmap cache error for psp_verstageMartin Roth
The assumption was that the fmap cache would be initialized in bootblock, otherwise an error is shown. This error is showing up in psp_verstage when the fmap cache is initialized there, so create a new ENV value for ENV_INITIAL_STAGE. BUG=None TEST=Boot, see that error message is gone from psp_verstage Signed-off-by: Martin Roth <martinroth@chromium.org> Change-Id: I142f2092ade7b4327780d423d121728bfbdab247 Reviewed-on: https://review.coreboot.org/c/coreboot/+/43488 Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Raul Rangel <rrangel@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-08-21acpi: add more AML generation functionsAaron Durbin
Add the following functions to acpi AML generation code: acpigen_write_to_integer_from_namestring() acpigen_write_create_byte_field() acpigen_write_create_word_field() acpigen_write_create_dword_field() acpigen_write_create_qword_field() BUG=b:163583825 Change-Id: Ida151aff68f90012b16df2383fb96ddb87c3fb9c Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44641 Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-08-21include/asan.h: Add missing includesElyes HAOUAS
<stdint.h> and <stddef.h> are missing. Change-Id: I10520013bb5ceb3aec0d24715f371f77e4300a70 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44656 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Idwer Vollering <vidwer@gmail.com>
2020-08-21arch/x86: Add support for ASan to memory functionsHarshit Sharma
Compiler's instrumentation cannot insert asan memory checks in case of memory functions like memset, memcpy and memmove as they are written in assembly. So, we need to manually check the memory state before performing each of these operations to ensure that ASan is triggered in case of bad access. Change-Id: I2030437636c77aea7cccda8efe050df4b77c15c7 Signed-off-by: Harshit Sharma <harshitsharmajs@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/44307 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
2020-08-21lib: Add ASan support to romstage on x86 archHarshit Sharma
This patch adds ASan support to romstage on x86 architecture. A Kconfig option is added to enable ASan in romstage. Compiler flags are updated. A memory space representing the shadow region is reserved in linker section. And a function call to asan_init() is added to initialize shadow region when romstage loads. Change-Id: I67ebfb5e8d602e865b1f5c874860861ae4e54381 Signed-off-by: Harshit Sharma <harshitsharmajs@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/43604 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
2020-08-21lib: Add ASan support to ramstage on x86 archHarshit Sharma
This patch adds address sanitizer module to the library and reserves a linker section representing the shadow region for ramstage. Also, it adds an instruction to initialize shadow region on x86 architecture when ramstage is loaded. Change-Id: Ica06bd2be78fcfc79fa888721ed920d4e8248f3b Signed-off-by: Harshit Sharma <harshitsharmajs@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/42496 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
2020-08-20soc/amd/acpi: Move ACPI IVRS generation to corebootJason Glenesk
Add code for IVRS generation to coreboot. Publish coreboot generated structure rather than IVRS generated by FSP binary. Reference Doc: 48882_IOMMU_3.05_PUB.pdf BUG=b:155307433 TEST=Boot trembyle to shell and extract and compare IVRS tables and make sure they cover the same devices. Change-Id: I693f4399766c71c3ad53539634c65ba59afd0fe1 Signed-off-by: Jason Glenesk <jason.glenesk@amd.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/43804 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
2020-08-19arch/x86/boot: Jump to payload in protected modePatrick Rudolph
* On ARCH_RAMSTAGE_X86_64 jump to the payload in protected mode. * Add a helper function to jump to arbitrary code in protected mode, similar to the real mode call handler. * Doesn't affect existing x86_32 code. * Add a macro to cast pointer to uint32_t that dies if it would overflow on conversion Tested on QEMU Q35 using SeaBIOS as payload. Tested on Lenovo T410 with additional x86_64 patches. Change-Id: I6552ac30f1b6205e08e16d251328e01ce3fbfd14 Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/30118 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>