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Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/releases/coreboot-4.22-relnotes.md | 330 |
1 files changed, 270 insertions, 60 deletions
diff --git a/Documentation/releases/coreboot-4.22-relnotes.md b/Documentation/releases/coreboot-4.22-relnotes.md index 8b9a099c12..e32607a93c 100644 --- a/Documentation/releases/coreboot-4.22-relnotes.md +++ b/Documentation/releases/coreboot-4.22-relnotes.md @@ -1,32 +1,50 @@ Upcoming release - coreboot 4.22 ======================================================================== -The 4.22 release is planned for mid-November, 2023 +The next release is planned for mid-February, 2024 -Update this document with changes that should be in the release notes. +These notes cover the latest updates and improvements to coreboot over +the past three months. A big thank you to the returning contributors as +well as the 14 individuals who committed code for the first time. We +greatly appreciate everyone's dedication and expertise. As with past +releases, this one reflects a commitment to open source innovation, +security enhancements, and expanding hardware support. -* Please use Markdown. -* See the past few release notes for the general format. -* The chip and board additions and removals will be updated right - before the release, so those do not need to be added. -* Note that all changes before the release are done are marked upcoming. - A final version of the notes are done after the release. -### Significant or interesting changes +### coreboot version naming update -* Add changes that need a full description here +This release is the last release to use the incrementing 4.xx release +name scheme. For future releases, coreboot is switching to a +Year.Month.Sub-version naming scheme. As such, the next release, +scheduled for February of 2024 will be numbered 24.02, with the +sub-version of 00 implied. If we need to do a fix or future release of +the 24.02 release, we’ll append the values .01, .02 and so on to the +initial release value. -* This section should have full descriptions and can or should have - a link to the referenced commits. + +### coreboot default branch update + +Immediately after the 4.21 release, the coreboot project changed the +default git branch from ‘master’ to ‘main’. For the first couple of +months after the change, The master branch was synced with the main +branch several times a day, allowing people time to update any scripts. +As of 2023-11-01, the sync rate has slowed to once a week. This will +continue until the next release, at which time the master branch will +be removed. + + + +Significant or interesting changes +---------------------------------- ### x86: support .data section for pre-memory stages x86 pre-memory stages did not support the `.data` section and as a result developers were required to include runtime initialization code -instead of relying on C global variable definition. +instead of relying on C global variable definitions. Other platforms do not have that limitation. Hence, resolving it helps -to align code and reduce compilation based restriction (cf. the use of +to align code and reduce compilation-based restrictions (cf. the use of `ENV_HAS_DATA_SECTION` compilation flag in various places of coreboot code). @@ -37,92 +55,284 @@ There were three types of binary to consider: 3. pre-memory stages loaded in and executed from Cache-As-RAM (cf. `CONFIG_NO_XIP_EARLY_STAGES`). -eXecute-In-Place pre-memory stages (#1) relies on a new ELF segment as +eXecute-In-Place pre-memory stages (#1) rely on a new ELF segment as the code segment Virtual Memory Address and Load Memory Address are -identical but the data needs to be linked in cache-As-RAM (VMA) but to -be stored right after the code (LMA). +identical but the data needs to be linked in cache-As-RAM (VMA) to be +stored right after the code (LMA). `bootblock` (#2) also uses this new segment to store the data right -after the code and it loads it to Cache-As-RAM at runtime. However, -the code involved is different. +after the code and it loads it to Cache-As-RAM at runtime. However, the +code involved is different. -Not eXecute-In-Place pre-memory stages (#3) did not really need any -special work other than enabling a .data section as the code and data -VMA / LMA translation vector is the same. +Not eXecute-In-Place pre-memory stages (#3) did not need any special +work other than enabling a .data section as the code and data VMA / LMA +translation vector is the same. Related important commits: +- c9cae530e5 ("cbfstool: Make add-stage support multiple ignore sections") +- 79f2e1fc8b ("cbfstool: Make add-stage support multiple loadable segments") +- b7832de026 ("x86: Add .data section support for pre-memory stages") -- c9cae530e5ac54c5b3639d0d555966ca5cad65ff ("cbfstool: Make add-stage - support multiple ignore sections") -- 79f2e1fc8b6192e96f99c05f71baeb77d4633d40 ("cbfstool: Make add-stage - support multiple loadable segments") -- b7832de0260b042c25bf8f53abcb32e20a29ae9c ("x86: Add .data section - support for pre-memory stages") ### x86: Support CBFS cache for pre-memory stages and ramstage -The CBFS cache scratchpad offers a generic way to decompress CBFS -files through the cbfs_map() function without having to reserve a -per-file specific memory region. +The CBFS cache scratchpad offers a generic way to decompress CBFS files +through the cbfs_map() function without having to reserve a per-file +specific memory region. CBFS cache x86 support has been added to pre-memory stages and ramstage. 1. **pre-memory stages**: The new `PRERAM_CBFS_CACHE_SIZE` Kconfig can be used to set the pre-memory stages CBFS cache size. A cache size - of zero disables the CBFS cache feature for all pre-memory - stages. The default value is 16 KiB which seems a reasonable - minimal value enough to satisfy basic needs such as the - decompression of a small configuration file. This setting can be - adjusted depending on the platform needs and capabilities. + of zero disables the CBFS cache feature for all pre-memory stages. + The default value is 16 KiB which seems a reasonable minimal value + enough to satisfy basic needs such as the decompression of a small + configuration file. This setting can be adjusted depending on the + platform's needs and capabilities. Note that we have set this size to zero for all the platforms without enough space in Cache-As-RAM to accommodate the default size. -2. **ramstage**: The new `RAMSTAGE_CBFS_CACHE_SIZE` Kconfig can be - used to set the ramstage CBFS cache size. A cache size of zero - disables the CBFS cache feature for ramstage. Similarly to - pre-memory stages support, the default size is 16 KiB. +2. **ramstage**: The new `RAMSTAGE_CBFS_CACHE_SIZE` Kconfig can be used + to set the ramstage CBFS cache size. A cache size of zero disables + the CBFS cache feature for ramstage. Similarly to pre-memory stages + support, the default size is 16 KiB. - As we want to support S3 suspend/resume use-case, the CBFS cache + As we want to support the S3 suspend/resume use case, the CBFS cache memory cannot be released to the operating system and therefore cannot be an unreserved memory region. The ramstage CBFS cache - scratchpad is defined as a simple C static buffer as it allows us - to keep the simple and robust design of the static initialization - of the `cbfs_cache` global variable (cf. src/lib/cbfs.c). + scratchpad is defined as a simple C static buffer as it allows us to + keep the simple and robust design of the static initialization of + the `cbfs_cache` global variable (cf. src/lib/cbfs.c). However, since some AMD SoCs (cf. `SOC_AMD_COMMON_BLOCK_NONCAR` Kconfig) already define a `_cbfs_cache` region we also introduced a `POSTRAM_CBFS_CACHE_IN_BSS` Kconfig to gate the use of a static buffer as the CBFS cache scratchpad. -### Toolchain updates -* Upgrade GMP from 6.2.1 to 6.3.0 -* Upgrade binutils from 2.40 to 2.41 -* Upgrade MPFR from 4.2.0 to 4.2.1 +### Allow romstage to be combined into the bootblock + +Having a separate romstage is only desirable: + - with advanced setups like vboot or normal/fallback + - boot medium is slow at startup (some ARM SOCs) + - bootblock is limited in size (Intel APL 32K) + +When this is not the case there is no need for the extra complexity +that romstage brings. Including the romstage sources inside the +bootblock substantially reduces the total code footprint. Often the +resulting code is 10-20k smaller. + +This is controlled via a Kconfig option. -### Additional coreboot changes -The following are changes across a number of patches, or changes worth -noting, but not needing a full description. +### soc/intel/cmn/gfx: Add API to report presence of external display -* Changes that only need a line or two of description go here. +This implements an API to report the presence of an external display on +Intel silicon. The API uses information from the transcoder and +framebuffer to determine if an external display is connected. -### Platform Updates +For example, if the transcoder is attached to any DDI ports other than +DDI-A (eDP), and the framebuffer is initialized, then it is likely that +an external display is present. -* To be filled in immediately before the release by the release team +This information can be used by payloads to determine whether or not to +power on the display, even if eDP is not initialized. -### Plans to move platform support to a branch -* Section to be filled in or removed after discussion +### device/pci_rom: Set VBIOS checksum when filling VFCT table -### Statistics from the 4.21 to the 4.22 release +AMD's Windows display drivers validate the checksum of the VBIOS data +in the VFCT table (which gets modified by the FSP GOP driver), so +ensure it is set correctly after copying the VBIOS into the table if +the FSP GOP driver was run. Without the correct checksum, the Windows +GPU drivers will fail to load with a code 43 error in Device Manager. -* To be filled in immediately before the release by the release team -### Significant Known and Open Issues +Additional coreboot changes +--------------------------- + +* Move all ‘select’ statements from Kconfig.name files to Kconfig +* acpigen now generates variable-length PkgLength fields instead of a + fixed 3-byte size to improve compatibility and to bring it in line + with IASL +* Work to allow Windows to run on more Chromebooks +* General cleanup and reformatting +* Add initial AMD openSIL implementation +* Add ACPI table generation for ARM64 +* Stop resetting CMOS during s3 resume even if marked as invalid +* Comply with ACPI specification by making _STR Unicode strings +* Fix SMM get_save_state calculation, which was broken when STM was + enabled +* SNB+MRC boards: Migrate MRC settings to devicetree +* Work on chipset devicetrees for all platforms + + + +Changes to external resources +----------------------------- + +### Toolchain updates + +* Upgrade GMP from 6.2.1 to 6.3.0 +* Upgrade binutils from 2.40 to 2.41 +* Upgrade MPFR from 4.2.0 to 4.2.1 + + +### Git submodule pointers -* To be filled in immediately before the release by the release team +* amd_blobs: Update from commit id 6a1e1457af to e4519efca7 (16 + commits) +* arm-trusted-firmware: Update from commit id 37366af8d4 to 88b2d81345 + (214 commits) +* fsp: Update from commit id 3beceb01f9 to 481ea7cf0b (15 commits) +* intel-microcode: Update from commit id 6f36ebde45 to 6788bb07eb (1 + commit) +* vboot: Update from commit id 0c11187c75 to 24cb127a5e (24 commits) +* genoa_poc/opensil: New submodule updated to 0411c75e17 (41 commits) + + +### External payloads + +* U-Boot: Use github mirror and the latest version +* edk2: Update default branch for MrChromebox repo to 2023-09 + + + +Platform Updates +---------------- + +### Added 17 mainboards + +* AMD Onyx +* Google: Anraggar +* Google: Brox +* Google: Chinchou +* Google: Ciri +* Google: Deku +* Google: Deku4ES +* Google: Dexi +* Google: Dochi +* Google: Nokris +* Google: Quandiso +* Google: Rex4ES EC ISH +* Intel: Meteorlake-P RVP with Chrome EC for non-Prod Silicon +* Purism Librem 11 +* Purism Librem L1UM v2 +* Siemens FA EHL +* Supermicro X11SSW-F + + +### Added 1 SoC + +* src/soc/amd/genoa + + + +Statistics from the 4.21 to the 4.22 release +-------------------------------------------- + +* Total Commits: 885 +* Average Commits per day: 10.72 +* Total lines added: 58276 +* Average lines added per commit: 65.85 +* Number of patches adding more than 100 lines: 54 +* Average lines added per small commit: 37.77 +* Total lines removed: 27790 +* Average lines removed per commit: 31.40 +* Total difference between added and removed: 30486 +* Total authors: 135 +* New authors: 14 + + + +Significant Known and Open Issues +--------------------------------- + +Issues from the coreboot bugtracker: https://ticket.coreboot.org/ + +### Payload-specific issues + +```eval_rst ++-----+-----------------------------------------------------------------+ +| # | Subject | ++=====+=================================================================+ +| 499 | edk2 boot fails with RESOURCE_ALLOCATION_TOP_DOWN enabled | ++-----+-----------------------------------------------------------------+ +| 496 | Missing malloc check in libpayload | ++-----+-----------------------------------------------------------------+ +| 484 | No USB keyboard support with secondary payloads | ++-----+-----------------------------------------------------------------+ +| 414 | X9SAE-V: No USB keyboard init on SeaBIOS using Radeon RX 6800XT | ++-----+-----------------------------------------------------------------+ +``` + + +### Platform-specific issues + +```eval_rst ++-----+-----------------------------------------------------------------+ +| # | Subject | ++=====+=================================================================+ +| 509 | SD Card hotplug not working on Apollo Lake | ++-----+-----------------------------------------------------------------+ +| 507 | Windows GPU driver fails on Google guybrush & skyrim boards | ++-----+-----------------------------------------------------------------+ +| 506 | APL/GML don't boot OS when CPU microcode included "from tree" | ++-----+-----------------------------------------------------------------+ +| 505 | Harcuvar CRB - 15 of 16 cores present in the operating system | ++-----+-----------------------------------------------------------------+ +| 499 | T440p - EDK2 fails with RESOURCE_ALLOCATION_TOP_DOWN enabled | ++-----+-----------------------------------------------------------------+ +| 495 | Stoney Chromebooks not booting PSPSecureOS | ++-----+-----------------------------------------------------------------+ +| 478 | X200 booting Linux takes a long time with TSC | ++-----+-----------------------------------------------------------------+ +| 474 | X200s crashes after graphic init with 8GB RAM | ++-----+-----------------------------------------------------------------+ +| 457 | Haswell (t440p): CAR mem region conflicts with CBFS_SIZE > 8mb | ++-----+-----------------------------------------------------------------+ +| 453 | Intel HDMI / DP Audio not present in Windows after libgfxinit | ++-----+-----------------------------------------------------------------+ +| 449 | ThinkPad T440p fail to start, continuous beeping & LED blinking | ++-----+-----------------------------------------------------------------+ +| 448 | Thinkpad T440P ACPI Battery Value Issues | ++-----+-----------------------------------------------------------------+ +| 446 | Optiplex 9010 No Post | ++-----+-----------------------------------------------------------------+ +| 439 | Lenovo X201 Turbo Boost not working (stuck on 2,4GHz) | ++-----+-----------------------------------------------------------------+ +| 427 | x200: Two battery charging issues | ++-----+-----------------------------------------------------------------+ +| 412 | x230 reboots on suspend | ++-----+-----------------------------------------------------------------+ +| 393 | T500 restarts rather than waking up from suspend | ++-----+-----------------------------------------------------------------+ +| 350 | I225 PCIe device not detected on Harcuvar | ++-----+-----------------------------------------------------------------+ +``` + + + +Plans for the next release +-------------------------- + +* Finish adding chipset device trees for all SOCs +* Improve code for options/setup +* Start reformatting C files with clang-format +* Add warning/error step for Makefiles at the end + + + +coreboot Links and Contact Information +-------------------------------------- + +* Main Website: https://www.coreboot.org +* Downloads: https://coreboot.org/downloads.html +* Source control: https://review.coreboot.org +* Documentation: https://doc.coreboot.org +* Issue tracker: https://ticket.coreboot.org/projects/coreboot +* Donations: https://coreboot.org/donate.html |