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2021-06-10cpu/x86/lapic: Drop read/write_around aliasesKyösti Mälkki
Change-Id: Ia3935524e57885ca79586f1f4612020bb05956ab Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55195 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2021-06-10cpu/x86/lapic: Separate stop_this_cpu()Kyösti Mälkki
Function is needed with PARALLEL_MP and excluding guard will be added to the source file. The incompatibilities with X2APIC_SUPPORT have been fixed so the exclusion is removed here too. Change-Id: I5696da4dfe98579a3b37a027966b6758f22574aa Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55193 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-06-10cpu/x86/lapic: Add lapic_busy() helperArthur Heymans
Change-Id: Ife127d6dc8241cccb9d52236a9152da707f0e261 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55191 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-06-10cpu/x86/lapic: Add lapic_send_ipi() helperArthur Heymans
Change-Id: I7207a9aadd987b4307ce8b3dd8dbfd47d0a5768e Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55190 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-06-10cpu/x86/lapic: Do not inline some utility functionsKyösti Mälkki
They are not __always_inline and specially enable_lapic() will become more complex to support X2APIC state changes. Change-Id: Ic180fa8b36e419aba07e1754d4bf48c9dfddb2f3 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55258 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-06-10cpu/x86/lapic: Add lapic_update32() helperKyösti Mälkki
Change-Id: I57c5d85d3098f9d59f26f427fe16829e4e769194 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55187 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-06-10cpu/x86/lapic: Regroup LAPIC accessorsKyösti Mälkki
Change-Id: I4347fc6542f59f56bd8400181efa30247794cf96 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55186 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-06-10include/limits.h: Add file (read: borrow from Linux)Angel Pons
Copied from Linux file `include/vdso/limits.h` with some adjustments. Change-Id: I427d88b1d630fdc3c3e9c1b0e475adbf448d801a Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55319 Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-06-10device/pnp: Always provide `pnp_unset_and_set_config`Angel Pons
The `pnp_unset_and_set_config` function was only available when building with `ENV_PNP_SIMPLE_DEVICE` set. Add the complementary definition using device pointers, for the sake of completeness. Change-Id: I2a21e635f41f3f786057500fa96a2b3116e30d76 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55255 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Máté Kukri <kukri.mate@gmail.com> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
2021-06-10stddef.h: Use compiler macros for built-in integer typesJacob Garber
ptrdiff_t, wchar_t, and wint_t are all integer types built-in to the C language (as opposed to being library-only types defined in a header). In the past we had to define these typedefs ourselves because of romcc, but now that it's gone we should use the GCC-provided macros to select the types the compiler expects. Signed-off-by: Jacob Garber <jgarber1@ualberta.ca> Change-Id: I0874eddf780b6e41ce773ad8b4faa595e4bbd8a7 Reviewed-on: https://review.coreboot.org/c/coreboot/+/55260 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@mailbox.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
2021-06-09device/dram: Add LPDDR4 utilitiesRob Barnes
Add lpddr4.c utility file with lpddr4_speed_mhz_to_reported_mts. Fill in lpddr4_speeds using JDEC 209-4C table 210. LPDDR4 SPD decoding utilities are not included since there isn't a present need. BUG=b:184124605 TEST=Build and run on guybrush Change-Id: Id8ddfc98fff4255670c50e1ddd4d0a1326265772 Signed-off-by: Rob Barnes <robbarnes@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52745 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2021-06-09device: Add helper function is_devfn_enabled()Subrata Banik
is_devfn_enabled() function helps to check if a device is enabled based on given device function number. This function internally called is_dev_enabled() to check device state. Change-Id: I6aeba0da05b13b70155a991f69a6abf7eb48a78c Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55278 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2021-06-09cpu/x86/lapic: Add Kconfig choice LAPIC_ACCESS_MODEKyösti Mälkki
Allows compile-time optimisation on platforms that do not wish to enable runtime checking of X2APIC. Legacy lapic_cpu_init() is incompatible so there is dependency on PARALLEL_MP. Also stop_this_cpu() is incompatible, so there is dependency on !AP_IN_SIPI_WAIT. Since the code actually lacks enablement of X2APIC (apparently assuming the blob has done it) and the other small flaws pointed out in earlier reviews, X2APIC_RUNTIME is not selected per default on any platform yet. Change-Id: I8269f9639ee3e89a2c2b4178d266ba2dac46db3f Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55073 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Wonkyu Kim <wonkyu.kim@intel.com>
2021-06-08acpi: drop weak implementation of acpi_soc_get_bert_regionFelix Held
acpi_soc_get_bert_region only gets called when a chipset's Kconfig selects the ACPI_BERT option in which case the chipset code needs to implement this function. In the case of acpi_soc_get_bert_region not being implemented, but ACPI_BERT being selected for a chipset this patch changes the behavior from never generating a BERT ACPI table to a build error which is more obvious and easier to catch. Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Change-Id: Id479fce823d8534a7790f39125d1a2b3635fc029 Reviewed-on: https://review.coreboot.org/c/coreboot/+/55277 Reviewed-by: Lance Zhao Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-06-08acpi: rework BERT ACPI table generation logicFelix Held
Check if the ACPI_BERT Kconfig option is selected and only then try to generate the BERT table. Also remove the acpi_is_boot_error_src_present weak function from the ACPI global compilation unit and use the return value of acpi_soc_get_bert_region to determine if there is a valid BERT region with logged errors. Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Change-Id: I2a281f5f636010ba3b2e7e097e9cf53683022aea Reviewed-on: https://review.coreboot.org/c/coreboot/+/55054 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
2021-06-08soc/intel: Add Alder Lake's GT device IDSridhar Siricilla
Add Alder Lake specific graphics device ID. The document# 641765 lists the id 0x46a8. TEST=Verify boot on brya Signed-off-by: Sridhar Siricilla <sridhar.siricilla@intel.com> Change-Id: I6f36256505a3e07c6197079ea2013991e841401b Reviewed-on: https://review.coreboot.org/c/coreboot/+/55256 Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com> Reviewed-by: Ronak Kanabar <ronak.kanabar@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-06-07cpu/x86/lapic: Declare start_cpu() staticKyösti Mälkki
This is for the !PARALLEL_MP paths. Change-Id: If4b91834a1b6de2a902ab914610ab76c1423f1e9 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55188 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-06-07acpi: rename acpi_soc_fill_bert and add return valueFelix Held
The return value indicates if the function has found valid BERT data and wrote them to the region and length parameters. This will be used in a follow-up patch to remove the acpi_is_boot_error_src_present function call in the common code. Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Change-Id: Iaaa3eed51645e1b3bc904c6279d171e3a10d59be Reviewed-on: https://review.coreboot.org/c/coreboot/+/55053 Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Lance Zhao Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-06-07acpi/device: Add ability to generate proper _STA for PowerResourceRaul E Rangel
acpi_device_add_power_res currently generates a `_STA` method hardcoded to ON. This change enables the ability to generate a `_STA` method that queries the status of the GPIOs to determine if the power resource is ON or OFF. BUG=b:184617186 TEST=Dump SSDT table for guybrush Signed-off-by: Raul E Rangel <rrangel@chromium.org> Change-Id: I91410556db002c620fd9aaa99981457808da93a5 Reviewed-on: https://review.coreboot.org/c/coreboot/+/55027 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Lance Zhao Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2021-06-01acpi: drop unused parameter from acpi_soc_fill_bertFelix Held
Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Change-Id: Ic354824468f016a7857c6990024ae87db6fd00bf Reviewed-on: https://review.coreboot.org/c/coreboot/+/55052 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Lance Zhao
2021-05-30lib/rtc: Add sanity check for time and dateWerner Zeh
Add a function to check sanity of a given RTC date and time. Invalid values in terms of overrun ranges of the registers can lead to strange issues in the OS. Change-Id: I0a381d445c894eee4f82b50fe86dad22cc587605 Signed-off-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/54913 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
2021-05-28option: Turn CMOS option backend into choiceAngel Pons
In order to add more option backends, transform the current CMOS option backend into a Kconfig choice. Replace the `select` directives, as they cannot be used with choice options. Change-Id: Id3180e9991f0e763b4bae93a92d40668e7fc99bc Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com> Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/54728 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2021-05-28cpu/x86/entry16.S: Make Intel CBnT TOCTOU safeArthur Heymans
Intel CBnT (and Boot Guard) makes the chain of trust TOCTOU safe by setting up NEM (non eviction mode) in the ACM. The CBnT IBB (Initial BootBlock) therefore should not disable caching. Sidenote: the MSR macros are taken from the slimbootloader project. TESTED: ocp/Deltalake boot with and without CBnT and also a broken CBnT setup. Change-Id: Id2031e4e406655e14198e45f137ba152f8b6f567 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/54010 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Christian Walter <christian.walter@9elements.com>
2021-05-27cbmem: Introduce "early" init hooks for consoleJulius Werner
Over the last couple of years we have continuously added more and more CBMEM init hooks related to different independent components. One disadvantage of the API is that it can not model any dependencies between the different hooks, and their order is essentially undefined (based on link order). For most hooks this is not a problem, and in fact it's probably not a bad thing to discourage implicit dependencies between unrelated components like this... but one resource the components obviously all share is CBMEM, and since many CBMEM init hooks are used to create new CBMEM areas, the arbitrary order means that the order of these areas becomes unpredictable. Generally code using CBMEM should not care where exactly an area is allocated, but one exception is the persistent CBMEM console which relies (on a best effort basis) on always getting allocated at the same address on every boot. This is, technically, a hack, but it's a pretty harmless hack that has served us reasonably well so far and would be difficult to realize in a more robust way (without adding a lot of new infrastructure). Most of the time, coreboot will allocate the same CBMEM areas in the same order with the same sizes on every boot, and this all kinda works out (and since it's only a debug console, we don't need to be afraid of the odd one-in-a-million edge case breaking it). But one reproducible difference we can have between boots is the vboot boot mode (e.g. normal vs. recovery boot), and we had just kinda gotten lucky in the past that we didn't have differences in CBMEM allocations in different boot modes. With the recent addition of the RW_MCACHE (which does not get allocated in recovery mode), this is no longer true, and as a result CBMEM consoles can no longer persist between normal and recovery modes. The somewhat kludgy but simple solution is to just create a new class of specifically "early" CBMEM init hooks that will always run before all the others. While arbitrarily partitioning hooks into "early" and "not early" without any precise definition of what these things mean may seem a bit haphazard, I think it will be good enough in practice for the very few cases where this matters and beats building anything much more complicated (FWIW Linux has been doing something similar for years with device suspend/resume ordering). Since the current use case only relates to CBMEM allocation ordering and you can only really be "first" if you allocate in romstage, the "early" hook is only available in romstage for now (could be expanded later if we find a use case for it). Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: If2c849a89f07a87d448ec1edbad4ce404afb0746 Reviewed-on: https://review.coreboot.org/c/coreboot/+/54737 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2021-05-27lib/hexdump: remove hexdump32 and use hexdump insteadFelix Held
hexdump and hexdump32 do similar things, but hexdump32 is mostly a reimplementation that has additional support to configure the console log level, but has a very unexpected len parameter that isn't in bytes, but in DWORDs. With the move to hexdump() the console log level for the hexdump is changed to BIOS_DEBUG. Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Change-Id: I6138d17f0ce8e4a14f22d132bf5c64d0c343b80d Reviewed-on: https://review.coreboot.org/c/coreboot/+/54925 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-05-27acpi: add SRAT Generic Initiator Affinity structureJonathan Zhang
Generic Initiator Affinity structure is introdcued in ACPI spec 6.3. This structure is used to define NUMA affinity domain which is established by generic initiator (such as by CXL device). Signed-off-by: Jonathan Zhang <jonzhang@fb.com> Change-Id: Ic6ef01c59e02f30dc290f27e741027e16f5d8359 Reviewed-on: https://review.coreboot.org/c/coreboot/+/52734 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Lance Zhao
2021-05-26soc/intel/elkhartlake: Update SA & IGD DIDs TableTan, Lean Sheng
Update SA & IGD DIDs table as per latest EDS (Doc no: 601458). Add extra SKUs and fix the mismatched SKU numbers accordingly. Signed-off-by: Lean Sheng Tan <lean.sheng.tan@intel.com> Change-Id: I62fd9e6a7cf0fc6f541f3d6d9edd31d41db7279f Reviewed-on: https://review.coreboot.org/c/coreboot/+/54863 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
2021-05-26option: Decouple API from CMOS backendAngel Pons
Prepare to allow using other backends to store options. Change-Id: I3f838d27bf476207c6dc8f2c1f15c3fa9ae47d87 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/54727 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2021-05-26option.h: Correct `get_uint_option` return typeAngel Pons
Commit 88dcb3179b4b (src: Retype option API to use unsigned integers) changed the option API to use unsigned integers, but missed this. Change-Id: I5deb17157db41c40cc72078e2af9cf65bdbe0581 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/54726 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2021-05-24device: Consider fw_config probing in `is_dev_enabled()`Furquan Shaikh
With the introduction of fw_config support in coreboot, it is possible for mainboards to control the state of a device (on/off) in ramstage using fw_config probe conditions. However, the device tree in immutable in all other stages and hence `is_dev_enabled()` does not really reflect the true state as in ramstage. This change adds a call to `fw_config_probe_dev()` in `is_dev_enabled()` when device tree is immutable (by checking DEVTREE_EARLY) to first check if device is disabled because of device probe conditions. If so, then it reports device as being disabled. Else, dev->enabled is used to report the device state. This allows early stages (bootblock, romstage) to use `is_dev_enabled()` to get the true state of the device by taking probe conditions into account and eliminates the need for each caller to perform their own separate probing. Change-Id: Ifede6775bda245cba199d3419aebd782dc690f2c Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/54752 Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-05-24fw_config: Add helper function `fw_config_probe_dev`Furquan Shaikh
This change adds a helper function `fw_config_probe_dev()` that allows the caller to check if any of the probe conditions are true for any given device. If device has no probe conditions or a matching probe condition, then it returns true and provides the matching probe condition back to caller (if provided with a valid pointer). Else, it returns false. When fw_config support is disabled, this function always returns true. Change-Id: Ic2dae338e6fbd7755feb23ca86c50c42103f349b Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/54751 Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-05-21soc/intel/common: Add Alder Lake device IDsSumeet R Pawnikar
Add Alder Lake specific Host and Graphics device IDs. As per latest document number: 619501, these IDs got an update. Change-Id: I548a903714ccc7470f1425ac67c0c66522437365 Signed-off-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/54674 Reviewed-by: Subrata Banik <subrata.banik@intel.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-05-14soc/intel/alderlake: Update CPU and IGD Device IDsMaulik V Vaghela
Updated CPU ID and IGD ID for Alder Lake as per EDS. TEST=Code compilation works and coreboot is able to boot and identify new device Ids. Change-Id: I2759a41a0db1eba5d159edfc89460992914fcc3c Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/54211 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Subrata Banik <subrata.banik@intel.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2021-05-14src/acpi: Add initial support for HMATJonathan Zhang
Add initial HMAT (Heterogeneous Memory Attribute Table) support based on ACPI spec 6.4 section 5.2.27. Add functions to create HMAT table (revision 2) and create HMAT Memory Proximity Domain Attribute (MPDA) Structure. TESTED=Simulated HMAT table creation on OCP DeltaLake server, dumped the HMAT table and exmained the content. HMAT table and one MPDA structure are added. OCP Delatake server is based on Intel CooperLake Scalable Processor which does not support CXL (Compute Express Link). Therefore solution level testing is not done. Signed-off-by: Jonathan Zhang <jonzhang@fb.com> Change-Id: I5ee60ff990c3cea799c5cbdf7eead818b1bb4f9b Reviewed-on: https://review.coreboot.org/c/coreboot/+/52047 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2021-05-14acpi: Add acpigen_write_thermal_zoneRaul E Rangel
BUG=b:186166365 TEST=Compiles Signed-off-by: Raul E Rangel <rrangel@chromium.org> Change-Id: Icf88477143049119036c00276f9a01985dc0b4d3 Reviewed-on: https://review.coreboot.org/c/coreboot/+/54131 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Lance Zhao Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2021-05-12include/console: Fix FSP Notify phase postcodes discrepancySubrata Banik
List of changes: 1. Make the FSP notify phases name prior in comments section. 2. Fix discrepancies in FSP notify before and after postcode comments. 3. Add FSP notify postcode macros for after pci enumeration(0xa2) and ready to boot(0xa3) call. Change-Id: Ib4c825d5f1f31f80ad2a03ff5d6006daa7104d23 Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52894 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-05-12include/console: Rename and update POST_ENTRY_RAMSTAGE postcodeSubrata Banik
Rename and update POST_ENTRY_RAMSTAGE postcode value from 0x80 to 0x6f to make the ramstage postcodes appear in an incremental order. Signed-off-by: Subrata Banik <subrata.banik@intel.com> Change-Id: I60f4bd8b2e6b2b887dee7c4991a14ce5d644fdba Reviewed-on: https://review.coreboot.org/c/coreboot/+/52947 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
2021-05-12include/console: Fix duplicate entry of postcode 0x79Subrata Banik
Change POST_PRE_HARDWAREMAIN postcode value from 0x79 to 0x6e to avoid duplicate entry. Change-Id: I50cc75cd3097fba3e7faff05188511bba69ef1e7 Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52895 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
2021-05-10*x86: fix x2apic mode boot issueWonkyu Kim
Fix booting issues on google/kahlee introduced by CB:51723. Update use inital apic id in smm_stub.S to support xapic mode error. Check more bits(LAPIC_BASE_MSR BIT10 and BIT11) for x2apic mode. TEST=Boot to OS and check apicid, debug log for CPUIDs cpuid_ebx(1), cpuid_ext(0xb, 0), cpuid_edx(0xb) etc Signed-off-by: Wonkyu Kim <wonkyu.kim@intel.com> Change-Id: Ia28f60a077182c3753f6ba9fbdd141f951d39b37 Reviewed-on: https://review.coreboot.org/c/coreboot/+/52696 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-05-10device: Drop unused `uma_memory_{base,size}` globalsAngel Pons
These global variables are not used anywhere. Drop them. Change-Id: I3fe60b970153d913ae7b005257e2b53647d6f343 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/53977 Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-05-10src: Drop "This file is part of the coreboot project" linesAngel Pons
Commit 6b5bc77c9b22c398262ff3f4dae3e14904c57366 (treewide: Remove "this file is part of" lines) removed most of them, but missed some files. Change-Id: Ib8e7ab26a74b52f86d91faeba77df3331531763f Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/53976 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Nico Huber <nico.h@gmx.de>
2021-05-06drivers/pc80/rtc/option.c: Constrain API to integer valuesAngel Pons
None of the options accessed within coreboot is a string, and there are no guarantees that the code works as intended with them. Given that the current option API only supports integers for now, do not try to access options whose type is 's' (string). Change-Id: Ib67b126d972c6d55b77ea5ecfb862b4e9c766fe5 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52637 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
2021-05-06src: Retype option API to use unsigned integersAngel Pons
The CMOS option system does not support negative integers. Thus, retype and rename the option API functions to reflect this. Change-Id: Id3480e5cfc0ec90674def7ef0919e0b7ac5b19b3 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52672 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Rudolph <siro@das-labor.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Felix Singer <felixsinger@posteo.net>
2021-05-06include/console: Align ramstage Boot State Machine postcodesSubrata Banik
This patch ensures all boot state machine postcodes are in right order. Move POST_ENTRY_RAMSTAGE macro definition after POST_BS_PAYLOAD_BOOT. Change-Id: I9e03159fdf07a73f5f8eec1bbf32fcb47dd4af84 Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52893 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-05-03device: Switch pci_dev_is_wake_source to take pci_devfn_tTim Wawrzynczak
With the recent switch to SMM module loader v2, the size of the SMM for module google/volteer increased to above 64K in size, and thus failed to install the permanent SMM handler. Turns out, the devicetree is all pulled into the SMM build because of elog, which calls `pci_dev_is_wake_source`, and is the only user of `struct device` in SMM. Changing this function to take a pci_devfn_t instead allows the linker to remove almost the entire devicetree from SMM (only usage left is when disabling HECI via SMM). BUG=b:186661594 TEST=Verify loaded program size of `smm.elf` for google/volteer is almost ~50% smaller. Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Change-Id: I4c39e5188321c8711d6479b15065e5aaedad8f38 Reviewed-on: https://review.coreboot.org/c/coreboot/+/52765 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2021-04-30mb/google: Move ECFW_RW setting for non-ChromeEC boardsKyösti Mälkki
The boolean is stored in ChromeOS NVS, not GNVS. Change-Id: I5c424a052d484228a456f8f0ad4fb0bed3165e09 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50877 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2021-04-30vc/google/chromeos: Refactor GNVS initKyösti Mälkki
Move the support code for filling ChromeOS GNVS from acpi/chromeos-gnvs.c to vc/google/chromeos/gnvs.c. Change-Id: I7e92206561812eb3dc69739df49b6c3a93853858 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50612 Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Lance Zhao Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-30cpu/x86/msr: introduce helpers msr_read, msr_writeMichael Niewöhner
The existing helpers for reading/writing MSRs (rdmsr, wrmsr) require use of the struct `msr_t`, which splits the MSR value into two 32 bit parts. In many cases, where simple 32 bit or 64 bit values are written, this bloats the code by unnecessarly having to use that struct. Thus, introduce the helpers `msr_read` and `msr_write`, which take or return `uint64_t` values, so the code condenses to a single line or two, without having to deal with `msr_t`. Example 1: ~~~ msr_t msr = { .lo = read32((void *)(uintptr_t)0xfed30880), .hi = 0, }; msr.lo |= 1; wrmsr(0x123, msr); ~~~ becomes ~~~ uint32_t foo = read32((void *)(uintptr_t)0xfed30880); msr_write(0x123, foo | 1) ~~~ Example 2: ~~~ msr_t msr = rdmsr(0xff); uint64_t msr_val = (msr.hi << 32) | msr.lo; ~~~ becomes ~~~ uint64_t msr_val = msr_read(0xff); ~~~ Change-Id: I27333a4bdfe3c8cebfe49a16a4f1a066f558c4ce Signed-off-by: Michael Niewöhner <foss@mniewoehner.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52548 Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Felix Held <felix-coreboot@felixheld.de> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-30src/acpi: Add APEI EINJ supportRocky Phagura
This adds full EINJ support with trigger action tables. The actual error injection functionality is HW specific. Therefore, HW specific code should call acpi_create_einj with an address where action table resides. The default params of the action table are filled out by the common code. Control is then returned back to the caller to modify or override default parameters. If no changes are needed, caller can simply add the acpi table. At runtime, FW is responsible for filling out the action table with the proper entries. The action table memory is shared between FW and OS. This memory should be marked as reserved in E820 table. Tested on Deltalake mainboard. Boot to OS, load the EINJ driver ( modprobe EINJ) and verify EINJ memory entries are in /proc/iomem. Further tested by injecting errors via the APEI file nodes. More information on error injection can be referenced in the latest ACPI spec. Change-Id: I29c6a861c564ec104f2c097f3e49b3e6d38b040e Signed-off-by: Rocky Phagura <rphagura@fb.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/49286 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-by: Rocky Phagura
2021-04-28soc/intel: Add Z370, H310C and B365 device IDsAngel Pons
Intel document 335192-004 contains the PCI device IDs for Z370 and H310C, but lacks the ID for B365. The ID appears on some websites: https://linux-hardware.org/index.php?id=pci:8086-a2cc-1849-a2cc Change-Id: Iea3c435713c46854c5271fbc266f47ba4573db52 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52703 Reviewed-by: Timofey Komarov <happycorsair@yandex.ru> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Felix Singer <felixsinger@posteo.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-28soc/intel: Add Kaby Lake PCH-U base device IDAngel Pons
Taken from Intel document 334658-003 (7th Generation Intel Processor Family I/O for U/Y Platforms and 8th Generation Intel Processor Family I/O for U Quad Core Platforms, Datasheet - Volume 1 of 2). Change-Id: I1d48c8868e1e5d453d599ecec835938ce09935d0 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52702 Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Timofey Komarov <happycorsair@yandex.ru> Reviewed-by: Felix Singer <felixsinger@posteo.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-28soc/intel: Rename 200-series PCH device IDsAngel Pons
The code name for these PCHs is Union Point, abbreviated as `UPT`. There are some 300-series Union Point PCHs (H310C, B365, Z370) which are meant to be paired with Coffee Lake CPUs instead of Skylake or Kaby Lake CPUs, and referring to them as `KBP` (Kaby Point, I guess) would be confusing. Tested with BUILD_TIMELESS=1, HP 280 G2 remains identical. Change-Id: I1a49115ae7ac37e76ce8d440910fb59926f34fac Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52700 Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Timofey Komarov <happycorsair@yandex.ru> Reviewed-by: Felix Singer <felixsinger@posteo.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-23lib/espi_debug: Add espi_show_slave_peripheral_channel_configurationRaul E Rangel
Prints out the following: eSPI Slave Peripheral configuration: Peripheral Channel Maximum Read Request Size: 64 bytes Peripheral Channel Maximum Payload Size Selected: 64 bytes Peripheral Channel Maximum Payload Size Supported: 64 bytes Bus master: disabled Peripheral Channel: ready Peripheral Channel: enabled BUG=none TEST=boot guybrush Signed-off-by: Raul E Rangel <rrangel@chromium.org> Change-Id: I7d598ee4f0f9d8ec0b37767e6a5a70288be2cb86 Reviewed-on: https://review.coreboot.org/c/coreboot/+/52225 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
2021-04-23option.h: Drop type-unsafe {get,set}_option() APIAngel Pons
Change-Id: I5a9852b1fb66d609238ab7324f28a5e397c030ae Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52566 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
2021-04-22arch/x86/smbios: Let SMBIOS type 9 be able to write slot IDJingleHsuWiwynn
The slot ID can be passed in from the function caller but parsing slot ID from devicetree is not yet supported and would still be 0. Add Slot ID in SMBIOS type 9 for Delta Lake. Tested=Execute "dmidecode -t 9" to verify. Signed-off-by: JingleHsuWiwynn <jingle_hsu@wiwynn.com> Change-Id: I9bf2e3b1232637a25ee595d08f8fbbc2283fcd5d Reviewed-on: https://review.coreboot.org/c/coreboot/+/49917 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-04-22ACPI: Fix the devices scope in the SATC structureJohn Zhao
This change adds the ATC_REQUIRED flag for the address translation cache indicator and fixes the devices scope entry in the SATC reporting structure. The SoC integrated devices in the specified PCI segment with address translation caches are a type of PCI Endpoint Device. BUG=None TEST=Built image successfully. Signed-off-by: John Zhao <john.zhao@intel.com> Change-Id: I57b3551f11502da48f3951da59d9426df5a40723 Reviewed-on: https://review.coreboot.org/c/coreboot/+/52479 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Lance Zhao Reviewed-by: Nico Huber <nico.h@gmx.de>
2021-04-21acpi: Add acpigen_write_LPI_packageRaul E Rangel
Low Power Idle States defines additional information not present in the _CST. See ACPI Specification, Version 6.3 Section 8.4.4.3 _LPI. BUG=b:178728116, b:185787242 TEST=Boot guybrush and dump ACPI tables Signed-off-by: Raul E Rangel <rrangel@chromium.org> Signed-off-by: Jason Glenesk <jason.glenesk@amd.corp-partner.google.com> Change-Id: I4f5301b95ff8245facaf48e2fbd51cc82df2d8cc Reviewed-on: https://review.coreboot.org/c/coreboot/+/52529 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
2021-04-21acpi: Add acpi_osc.hRaul E Rangel
See ACPI Specification, Version 6.3, Section 6.2.11 _OSC (Operating System Capabilities) We can add more UUIDs and capability flags in the future. BUG=b:178728116 TEST=Builds Signed-off-by: Raul E Rangel <rrangel@chromium.org> Change-Id: I6e2ac1e1b47b284489932d6ed12db9d94e8d7310 Reviewed-on: https://review.coreboot.org/c/coreboot/+/52527 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com> Reviewed-by: Jason Glenesk <jason.glenesk@amd.corp-partner.google.com> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
2021-04-21option.h: Introduce {get,set}_int_option() functionsAngel Pons
The {get,set}_option() functions are not type-safe: they take a pointer to void, without an associated length/size. Moreover, cmos_get_option() does not always fully initialise the destination value (it has no means to know how large it is), which can cause issues if the caller does not initialise the value beforehand. The idea behind this patch series is to replace the current type-unsafe API with a type-safe equivalent, and ultimately decouple the option API from CMOS. This would allow using different storage mechanisms with the same option system, maximising flexibility. Most, if not all users of get_option() have a value to fall back to, in case the option could not be read. Thus, get_int_option() takes a value to fall back to, which avoids repeating the same logic on call-sites. These new functions will be put to use in subsequent commits. Change-Id: I6bbc51135216f34518cfd05c3dc90fb68404c1cc Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47107 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
2021-04-21commonlib/region: Turn addrspace_32bit into a more official APIJulius Werner
We had the addrspace_32bit rdev in prog_loaders.c for a while to help represent memory ranges as an rdev, and we've found it useful for a couple of things that have nothing to do with program loading. This patch moves the concept straight into commonlib/region.c so it is no longer anchored in such a weird place, and easier to use in unit tests. Also expand the concept to the whole address space (there's no real need to restrict it to 32 bits in 64-bit environments) and introduce an rdev_chain_mem() helper function to make it a bit easier to use. Replace some direct uses of struct mem_region_device with this new API where it seems to make sense. Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: Ie4c763b77f77d227768556a9528681d771a08dca Reviewed-on: https://review.coreboot.org/c/coreboot/+/52533 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2021-04-19cpu/x86/smm_loaderv2: Use the permanent stack top during relocationArthur Heymans
Use the same stack location during relocation as for the permanent handler. When the number of CPUs is too large the stacks during relocation don't fit inside the default SMRAM segment at 0x30000. Currently the code would just let the CPU stack base grow downwards outside of the default SMM segment which would corrupt lower memory if S3 is implemented. Also update the comment on smm_module_setup_stub(). Change-Id: I6a0a890e8b1c2408301564c22772032cfee4d296 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51186 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-04-15*x86: Support x2apic modeWonkyu Kim
Implement x2apic mode as existing code only supports apic mode. Use info from LAPIC_BASE_MSR (LAPIC_BASE_MSR_X2APIC_MODE) to check if apic mode or x2apic mode and implement x2apic mode according to x2apic specfication. Reference: https://software.intel.com/content/www/us/en/develop/download/intel-64-architecture-x2apic-specification.html BUG=None BRANCH=None TEST=boot to OS and check apic mode cat /proc/cpuinfo | grep "apicid" ex) can see apicid bigger than 255 apicid : 256 apicid : 260 Signed-off-by: Wonkyu Kim <wonkyu.kim@intel.com> Change-Id: I0bb729b0521fb9dc38b7981014755daeaf9ca817 Reviewed-on: https://review.coreboot.org/c/coreboot/+/51723 Reviewed-by: Ravishankar Sarawadi <ravishankar.sarawadi@intel.com> Reviewed-by: Jamie Ryu <jamie.m.ryu@intel.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-14Rename do_printk() to printk()Nico Huber
The indirection seems unnecessary. The macros throw features like `-Wmisleading-indentation` off, though. Default build for QEMU/Q35 is unchanged. Change-Id: Ie4eab935a367b5ad6b38225c4973d41d9f70ef10 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51887 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-04-14console: Always add printf-format attribute to printk()Nico Huber
The attribute was missing in case the console is disabled. Change-Id: Iee23f6f4da61cd3637441705a8d3bbd2da7a33ca Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52231 Reviewed-by: Paul Menzel <paulepanter@mailbox.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-11spd.h: Move `DIMMx` macros to i440bx/raminit.hAngel Pons
These macros aren't needed anywhere else, so reduce their visibility. Change-Id: Ie8d14849b4fb86d34a841d4a13ee3bbb46f9f71c Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52061 Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-09include/assert.h: Use mock_assert() for ENV_TEST targetsJakub Czapiga
Some tests have to be able to catch assertion errors. Adding CMocka mock_assert() enables that. Additionally fix test_imd_create_tiered_empty(), test_full_stack() and test_incorrectly_initialized_stack() by adding missing expect_assert_failure(). Signed-off-by: Jakub Czapiga <jacz@semihalf.com> Change-Id: I5e8dd1b198ee6fab61e2be3f92baf1178f79bf18 Reviewed-on: https://review.coreboot.org/c/coreboot/+/51804 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
2021-04-06soc/intel/alderlake: Add LPC and IGD device Ids for Alderlake MMaulik V Vaghela
Added new LPC and IGD device IDs for Alderlake M. Also, added entry for CPUID_ALDERLAKE_M_A0 in report_platform.c TEST=Check if platform information print is coming properly in coreboot Change-Id: If33c43da8cbd786261b00742e342f0f01622c607 Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50138 Reviewed-by: Subrata Banik <subrata.banik@intel.com> Reviewed-by: Ronak Kanabar <ronak.kanabar@intel.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-06decompressor: Add CBFS_VERIFICATION supportJulius Werner
CBFS_VERIFICATION requires the CBFS metadata hash anchor to be linked into an uncompressed stage, but for platforms using COMPRESS_BOOTBLOCK, this is only the decompressor stage. The first CBFS accesses are made in the bootblock stage after decompression, so if we want to make CBFS_VERIFICATION work on those platforms, we have to pass the metadata hash anchor from the decompressor into the bootblock. This patch does just that. (Note that this relies on the decompressor data remaining valid in memory for as long as the metadata hash anchor is needed. This is always true even for OVERLAP_DECOMPRESSOR_ROMSTAGE() situations because the FMAP and CBFS metadata necessarily need to have finished verification before a new stage could be loaded.) Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: I2e6d7384cfb8339a24369eb6c01fc12f911c974e Reviewed-on: https://review.coreboot.org/c/coreboot/+/52085 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-06cbfs: Simplify cbfs_load_and_decompress() and stop exporting itJulius Werner
With the last external user to cbfs_load_and_decompress() gone, we can stop exporting this function to the rest of coreboot and make it local to cbfs.c. Also remove a couple of arguments that no longer really make a difference and fold the stage-specific code for in-place LZ4 decompression into cbfs_prog_stage_load(). Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: I4b459650a28e020c4342a66090f55264fbd26363 Reviewed-on: https://review.coreboot.org/c/coreboot/+/52083 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2021-04-06include/rules.h: Add ENV_TEST definitionJakub Czapiga
Some functions/macros like assert() require redefinition for testing purposes. ENV_TEST is introduced to make it possible without using bypass hacks. This patch also adds a global __TEST__ define to TEST_CFLAGS for all test targets in order to enable ENV_TEST. Signed-off-by: Jakub Czapiga <jacz@semihalf.com> Change-Id: Ib8f2932902a73a7dbe181adc82cc18437abb48e8 Reviewed-on: https://review.coreboot.org/c/coreboot/+/51803 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
2021-04-06include/cbfsglue.h: Use BIOS_INFO for LOG macroWim Vervoorn
The ERROR() and LOG() macros both used BIOS_ERR as the error level. The messages generated by the LOG() macro are informational items. Change to BIOS_INFO to reflect that. BUG=N/A TEST=tested on facebook monolith Change-Id: I3827a7d65a9d70045a36fb8db4b2c129e1045122 Signed-off-by: Wim Vervoorn <wvervoorn@eltan.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/52019 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Frans Hendriks <fhendriks@eltan.com> Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2021-04-06lib: Add obvious definition for `calloc`Tim Wawrzynczak
The calloc() function is useful in addition to malloc and friends, so add the obvious definition. Change-Id: I57a568e323344a97b35014b7b8bec16adc2fd720 Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51949 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-05cbfs: Make `mdata` argument to cbfs_allocator_t constJulius Werner
Right before CB:49334 was submitted, I changed the signature of cbfs_allocator_t function pointers to include another argument passing in the already loaded CBFS metadata (to allow for the rare edge case of allocators needing to read CBFS attributes). This interface is not meant to be able to modify the passed-in metadata, so to clarify that and prevent potential errors, we should declare the argument const. Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: I7e3756490b9ad7ded91268c61797cef36c4118ee Reviewed-on: https://review.coreboot.org/c/coreboot/+/52081 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2021-04-05device/dram/ddr3: Drop unused MRS helpersAngel Pons
These aren't used anywhere anymore. Change-Id: I4cf2fc0d07a772886e90fba4f66591a7b0a40e6c Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47343 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
2021-04-05spd.h: Remove unused definitionsAngel Pons
These definitions are unused and not particularly useful. Drop them. Change-Id: I40a824888701870b6713c1a16ab671c19b3770ae Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51900 Reviewed-by: Michael Niewöhner <foss@mniewoehner.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-05device/dram/ddr4.h: Align with DDR3 and DDR2Angel Pons
Drop unnecessary typedefs and rename DDR4-specific definitions to avoid name clashes, as done for DDR3 in earlier commits. This allows including and using both DDR3 and DDR4 headers in the same compilation unit. Change-Id: I17f1cd88f83251ec23e9783a617f4d2ed41b07f0 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51898 Reviewed-by: Michael Niewöhner <foss@mniewoehner.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-05include/spd_ddr2.h: Remove unused and redundant fileAngel Pons
DDR2-related definitions exist in `device/dram/ddr2` already. Change-Id: I509f728138327d8a0a88e4503235f05bf14aed20 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51897 Reviewed-by: Michael Niewöhner <foss@mniewoehner.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-05device/dram/ddr3: Rename DDR3 SPD memory typesAngel Pons
To avoid name clashes with definitions for other DRAM generations, rename the enum type and values to contain `ddr3` or `DDR3`. Change-Id: If3710149ba94b94ed14f03e32f5e1533b4bc25c8 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51896 Reviewed-by: Michael Niewöhner <foss@mniewoehner.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-05device/dram/ddr3: Get rid of useless typedefsAngel Pons
These typedefs are not necessary. Remove them, and rename some elements to avoid any confusion with other DRAM generations, such as DDR4. Change-Id: Ibe40f33372358262c540e371f7866b06a4ac842a Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51895 Reviewed-by: Michael Niewöhner <foss@mniewoehner.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-03-28ACPI: Add SATC structure for DMAR tableJohn Zhao
The SoC integrated address translation cache(SATC) reporting structure is added to Virtualization Technology for Directed I/O specification Rev3.2. This change adds an ACPI Name-Space Device Declaration structure SATC which has type 5 reporting structure. BUG=None TEST=Built image successfully. Signed-off-by: John Zhao <john.zhao@intel.com> Change-Id: I91d1384083c98b75bcbdddd9cc7b7a26fab25d9d Reviewed-on: https://review.coreboot.org/c/coreboot/+/51776 Reviewed-by: Lance Zhao Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-03-24acpi: Add acpigen_write_PRT* helpers for generating _PRT entriesTim Wawrzynczak
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Change-Id: Ia666bd0e5db40d7873532dc22bc89be9854b903a Reviewed-on: https://review.coreboot.org/c/coreboot/+/51107 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2021-03-22acpi/acpigen.h: Add more intuitive AML package closing functionsJakub Czapiga
Until now every AML package had to be closed using acpigen_pop_len(). This commit introduces set of package closing functions corresponding with their opening function names. For example acpigen_write_if() opens if-statement package, acpigen_write_if_end() closes it. Now acpigen_write_else() closes previously opened acpigen_write_if(), so acpigen_pop_len() is not required before it. Signed-off-by: Jakub Czapiga <jacz@semihalf.com> Change-Id: Icfdc3804cd93bde049cd11dec98758b3a639eafd Reviewed-on: https://review.coreboot.org/c/coreboot/+/50910 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Lance Zhao Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-03-19cpu/x86/mp_init.c: Drop unnecessary preprocessor usageArthur Heymans
Change-Id: If67bcbf0c8ffbd041e2e4cab8496f4634de26552 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51185 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-03-19cpu/x86/mp_init: Allow stub sizes larger than the save state sizeArthur Heymans
The permanent handler module argument 'save_state_size' now holds the meaning of the real save state size which is then substracted from the CPUs save state 'top' to get the save state base. TESTED with qemu Q35 on x86_64 where the stub size exceeds the AMD64 save state size. Change-Id: I55d7611a17b6d0a39aee1c56318539232a9bb781 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50770 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-03-19cpu/x86/smm_loaderv2: Remove unused variablesArthur Heymans
Remove variables that are either constants or are just assigned but not used. Change-Id: I5d291a3464f30fc5d9f4b7233bde575010275973 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50784 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-03-19cpu/x86/smm_module_hander: Set up a save state mapArthur Heymans
With the smm_module_loaderv2 the save state map is not linear so copy a map from ramstage into the smihandler. TESTED on QEMU q35: Both SMMLOADER V1 and V2 handle save states properly. Change-Id: I31c57b59559ad4ee98500d83969424e5345881ee Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50769 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-03-19cpu/x86/smm_stub.S: Drop smm_runtime from the stubArthur Heymans
The parameters that the permanent handler requires are pushed directly to the permanent handlers relocatable module params. The paremeters that the relocation handler requires are not passed on via arguments but are copied inside the ramstage. This is ok as the relocation handler calls into ramstage. Change-Id: Ice311d05e2eb0e95122312511d83683d7f0dee58 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50767 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2021-03-19cpu/x86/smm.h: Remove smm runtime pointer from smm_loader_paramsArthur Heymans
struct smm_loader_params is a struct that is passed around in the ramstage code to set up either the relocation handler or the permanent handler. At the moment no parameters in the stub 'smm_runtime' are referenced so it can be dropped. The purpose is to drop the smm_runtime struct from the stub as it is already located in the permanent handler. Change-Id: I09c1b649b5991f55b5ccf57f22e4a3ad4c9e4f03 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50766 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-03-19cpu/x86/mp_init.c: Copy the stub parameter start32_offset into ramstageArthur Heymans
Keep a copy of start32_offset into ramstage to avoid needing to pass arguments, calling from assembly. Doing this in C code is better than assembly. Change-Id: Iac04358e377026f45293bbee03e30d792df407fd Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50765 Reviewed-by: Eugene Myers <cedarhouse1@comcast.net> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-03-18cpu/x86/smm: Move apic_id_to_cpu map to smm_stub paramsArthur Heymans
This is only consumed by the stub and not by the relocation handler or the permanent handler, so move it out of the runtime struct. Change-Id: I01ed0a412c23c8a82d88408be058a27e55d0dc4d Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50762 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-03-18cpu/x86/smm_stub.S: Drop unused module_handler parameterArthur Heymans
Change-Id: I15b433483c36cce04816e8895789997d91702484 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51530 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2021-03-18cpu/x86/smm: Move relocatable stub paramsArthur Heymans
These stub params need to be synced with the code in smm_stub.S and are consumed by both the smmloader and smmloader_v2. So it is better to have the definition located in one place. Change-Id: Ide3e0cb6dea3359fa9ae660eab627499832817c9 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50761 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-03-17spd_bin: Replace get_spd_cbfs_rdev() with spd_cbfs_map()Julius Werner
In pursuit of the goal of eliminating the proliferation of raw region devices to represent CBFS files outside of the CBFS core code, this patch removes the get_spd_cbfs_rdev() API and instead replaces it with spd_cbfs_map() which will find and map the SPD file in one go and return a pointer to the relevant section. (This makes it impossible to unmap the mapping again, which all but one of the users didn't bother to do anyway since the API is only used on platforms with memory-mapped flash. Presumably this will stay that way in the future so this is not something worth worrying about.) Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: Iec7571bec809f2f0712e7a97b4c853b8b40702d1 Reviewed-on: https://review.coreboot.org/c/coreboot/+/50350 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Wim Vervoorn <wvervoorn@eltan.com> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2021-03-17program_loading: Replace prog_rdev() with raw start pointer and sizeJulius Werner
Since prog_locate() was eliminated, prog_rdev() only ever represents the loaded program in memory now. Using the rdev API for this is unnecessary if we know that the "device" is always just memory. This patch changes it to be represented by a simple pointer and size. Since some code still really wants this to be an rdev, introduce a prog_chain_rdev() helper to translate back to that if necessary. Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: If7c0f1c5698fa0c326e23c553ea0fe928b25d202 Reviewed-on: https://review.coreboot.org/c/coreboot/+/46483 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2021-03-17sar: Fix semantics of `get_wifi_sar_cbfs_filename()`Furquan Shaikh
Currently, if `get_wifi_sar_cbfs_filename()` returns NULL, then `get_wifi_sar_limits()` assumes that the default filename is used for CBFS SAR file. This prevents a board from supporting different models using the same firmware -- some which require SAR support and some which don't. This change updates the logic in `get_wifi_sar_limits()` to return early if filename is not provided by the mainboard. In order to maintain the same logic as before, current mainboards are updated to return WIFI_SAR_CBFS_DEFAULT_FILENAME instead of NULL in default case. Change-Id: I68b5bdd213767a3cd81fe41ace66540acd68e26a Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51485 Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-03-17prog_loaders: Remove prog_locate()Julius Werner
This patch rewrites the last few users of prog_locate() to access CBFS APIs directly and removes the call. This eliminates the double-meaning of prog_rdev() (referring to both the boot medium where the program is stored before loading, and the memory area where it is loaded after) and makes sure that programs are always located and loaded in a single operation. This makes CBFS verification easier to implement and secure because it avoids leaking a raw rdev of unverified data outside the CBFS core code. Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: I7a5525f66e1d5f3a632e8f6f0ed9e116e3cebfcf Reviewed-on: https://review.coreboot.org/c/coreboot/+/49337 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2021-03-17cbfs: Remove prog_locate() for payloads (SELF and FIT)Julius Werner
This patch removes the prog_locate() call for all instances of loading payload formats (SELF and FIT), as the previous patch did for stages. Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: I582b37f36fe6f9f26975490a823e85b130ba49a2 Reviewed-on: https://review.coreboot.org/c/coreboot/+/49336 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-03-16cbfs: Remove prog_locate() for stages and rmodulesJulius Werner
This patch removes the prog_locate() step for stages and rmodules. Instead, the stage and rmodule loading functions will now perform the locate step directly together with the actual loading. The long-term goal of this is to eliminate prog_locate() (and the rdev member in struct prog that it fills) completely in order to make CBFS verification code safer and its security guarantees easier to follow. prog_locate() is the main remaining use case where a raw rdev of CBFS file data "leaks" out of cbfs.c into other code, and that other code needs to manually make sure that the contents of the rdev get verified during loading. By eliminating this step and moving all code that directly deals with file data into cbfs.c, we can concentrate the code that needs to worry about file data hashing (and needs access to cbfs_private.h APIs) into one file, making it easier to keep track of and reason about. This patch is the first step of this move, later patches will do the same for SELFs and other program types. Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: Ia600e55f77c2549a00e2606f09befc1f92594a3a Reviewed-on: https://review.coreboot.org/c/coreboot/+/49335 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-03-15mb/ocp/deltalake: Override SMBIOS type 2 feature flagsTim Chu
Override SMBIOS type 2 board feature flags. For Delta Lake, board is replaceable and is a hosting board. Tested=Execute "dmidecode -t 2" to check info is correct. Signed-off-by: Tim Chu <Tim.Chu@quantatw.com> Change-Id: I4469360ec51369dbf8179b3cbac0519ead7f0382 Reviewed-on: https://review.coreboot.org/c/coreboot/+/48849 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
2021-03-15pciexp_device: Rewrite LTR configurationNico Huber
I was bugged by spurious "Failed to enable LTR" messages for years. Looking at the the current algorithm, it is flawed in multiple ways: * It looks like the author didn't know they implemented a recursive algorithm (pciexp_enable_ltr()) inside another recursive algorithm (pciexp_scan_bridge()). Thus, at every tree level, everything is run again for the whole sub- tree. * LTR is enabled no matter if `.set_ltr_max_latencies` is implemented or not. Leaving the endpoints' LTR settings at 0: They are told to always report zero tolerance. In theory, depending on the root-complex implementation, this may result in higher power consumption than without LTR messages. * `.set_ltr_max_latencies` is only considered for the direct parent of a device. Thus, even with it implemented, an endpoint below a (non-root) bridge may suffer from the 0 settings as described above. * Due to the double-recursive nature, LTR is enabled starting with the endpoints, then moving up the tree, while the PCIe spec tells us to do it in the exact opposite order. With the current implementation of pciexp_scan_bridge(), it is hard to hook anything in that runs for each device from top to bottom. So the proposed solution still adds some redundancy: First, for every device that uses pciexp_scan_bus(), we enable LTR if possible (see below). Then, when returning from the bus- scanning recursion, we enable LTR for every device and configure the maximum latencies (if supported). The latter runs again on all bridges, because it's hard to know if pciexp_scan_bus() was used for them. When to enable LTR: * For all devices that implement `.set_ltr_max_latencies`. * For all devices below a bridge that has it enabled already. Change-Id: I2c5b8658f1fc8cec15e8b0824464c6fc9bee7e0e Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51328 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>