April 2023 - coreboot - mail.coreboot.org

[coreboot - Feature #433] (New) Unify TPM drivers in coreboot
by Michał Żygowski Sept. 7, 2025

Sept. 7, 2025

Issue #433 has been reported by Michał Żygowski. ---------------------------------------- Feature #433: Unify TPM drivers in coreboot https://ticket.coreboot.org/issues/433 * Author: Michał Żygowski * Status: New * Priority: Normal * Target version: none * Start date: 2022-10-24 ---------------------------------------- Add an option to compile all drivers for TPM 1.2, 2.0 TIS and CRB. The motivation is to not build multiple coreboot ROMs for each possible TPM supported by the platform. The tasks would include: - runtime TPM detection (probing TPM_INTF_CAPABILITY and TPM_INTERFACE_ID) - rename the TPM driver functions, make them static and expose them as a driver structure, e.g. struct tpm_driver { void (*init)(void); int (*open)(void); int (*close)(void); int (*sendrecv)(const uint8_t *sendbuf, size_t send_size, uint8_t *recvbuf, size_t *recv_len); } - based on the detected TPM, hook the tpm_driver functions to provide the global TPM API: tis_open, tis_close, tis_init, tis_sendrecv. Some additional API to get vendor/device name could also be considered. -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: https://ticket.coreboot.org/my/account

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[coreboot - Bug #415] (New) RESOURCE_ALLOCATION_TOP_DOWN breaks edk2
by Sean Rhodes May 2, 2025

May 2, 2025

Issue #415 has been reported by Sean Rhodes. ---------------------------------------- Bug #415: RESOURCE_ALLOCATION_TOP_DOWN breaks edk2 https://ticket.coreboot.org/issues/415 * Author: Sean Rhodes * Status: New * Priority: Low * Target version: none * Start date: 2022-09-07 * Affected versions: master ---------------------------------------- CB:41957 enabled RESOURCE_ALLOCATION_TOP_DOWN by default, which stopped edk2 from booting. The commit has been reverted, so this ticket is just to post logs. ---Files-------------------------------- resource_allocatorv4.txt (94 KB) -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: https://ticket.coreboot.org/my/account

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[coreboot - Feature #420] (New) Use standard format of TPM event log
by Krystian Hebel Aug. 7, 2024

Aug. 7, 2024

Issue #420 has been reported by Krystian Hebel. ---------------------------------------- Feature #420: Use standard format of TPM event log https://ticket.coreboot.org/issues/420 * Author: Krystian Hebel * Status: New * Priority: Normal * Target version: none * Start date: 2022-10-12 * Related links: [1] https://trustedcomputinggroup.org/wp-content/uploads/TCG_PCClientImplementa… [2] https://trustedcomputinggroup.org/wp-content/uploads/TCG_PCClient_PFP_r1p05… ---------------------------------------- Currently coreboot uses proprietary format for TPM event log. TCG has standardized log formats, differently for TPM1.2 (aka legacy or SHA1) [1] and TPM2.0 (aka crypto agile) [2], both of which can be parsed by Linux kernel and exposed in sysfs. I don't know of any tool outside of cbmem which can parse coreboot format; this includes payloads which may be interested in continuing chain of trust started by coreboot. Another incompatibility is caused by vboot's assignment of PCRs. Roles of PCRs are roughly specified by TCG in both of mentioned documents, they are more or less compatible with each other, but not with current coreboot code. These changes could break assumptions made by existing platforms, so they should be made as Kconfig options. This is a tracking issue to collect subtasks that need to be done in order to support standard event log formats. -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: https://ticket.coreboot.org/my/account

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QEMU x86 i440fx/piix4 build fails for >= 32MB ROMs - Assertion IS_HOST_SPACE_ADDRESS(host_space_address) failed
by Mike Banon Feb. 20, 2024

Feb. 20, 2024

If I use a default config for i440fx/piix4, building a 16MB ROM works fine, but 32MB or 64MB doesn't work anymore: ... CC postcar/southbridge/intel/common/rtc.o LINK cbfs/fallback/postcar.debug OBJCOPY cbfs/fallback/romstage.elf CREATE build/mainboard/emulation/qemu-i440fx/cbfs-file.vqaXlP.out (from /home/my_custom_path_to/coreboot/.config) CC+STRIP src/lib/cbfs_master_header.c OBJCOPY cbfs/fallback/bootblock.elf OBJCOPY bootblock.raw.elf OBJCOPY bootblock.raw.bin Created CBFS (capacity = 33553892 bytes) BOOTBLOCK CBFS cbfs_master_header CBFS fallback/romstage cbfstool: /home/my_custom_path_to/coreboot/util/cbfstool/cbfstool.c:1145: cbfstool_convert_mkstage: Assertion `IS_HOST_SPACE_ADDRESS(host_space_address)' failed. make: *** [Makefile.inc:1116: build/coreboot.pre] Aborted -- Best regards, Mike Banon Open Source Community Manager of 3mdeb - https://3mdeb.com/

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[coreboot - Bug #475] (New) mainboard_vbt_filename() in src/mainboard/lenovo/x200/blc.c does not work as intended
by Bill XIE Nov. 16, 2023

Nov. 16, 2023

Issue #475 has been reported by Bill XIE. ---------------------------------------- Bug #475: mainboard_vbt_filename() in src/mainboard/lenovo/x200/blc.c does not work as intended https://ticket.coreboot.org/issues/475 * Author: Bill XIE * Status: New * Priority: Normal * Assignee: Arthur Heymans * Category: board support * Target version: master * Start date: 2023-03-30 * Affected versions: 4.15, 4.16, 4.17, 4.18, 4.19, master * Affected hardware: x200 ---------------------------------------- Date back to coreboot 4.9, mainboard_vbt_filename() in src/mainboard/lenovo/x200/blc.c calls get_blc_pwm_freq_value(NULL), making the following if condition always falling to the first, not to mention null dereference on strcmp() in get_blc_pwm_freq_value(). In order to determine the correct vbt filename at runtime, edid ascii string should be obtained first. This issue may be distantly related to #474. -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: https://ticket.coreboot.org/my/account

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[coreboot - Support #485] (New) Request for Support for Intel Xeon 1700 D Processor Family in Coreboot(Ice Lake)
by Rajat Dongre Nov. 16, 2023

Nov. 16, 2023

Issue #485 has been reported by Rajat Dongre. ---------------------------------------- Support #485: Request for Support for Intel Xeon 1700 D Processor Family in Coreboot(Ice Lake) https://ticket.coreboot.org/issues/485 * Author: Rajat Dongre * Status: New * Priority: Immediate * Assignee: Rajat Dongre * Target version: none * Start date: 2023-04-27 ---------------------------------------- Hi, I am writing this email to request support for the Intel Xeon 1700 D processor family (Ice Lake) in Coreboot. As you may be aware, the support for the IceLake SOC has been removed, and I am using a processor from the same family. I would appreciate any help or guidance on how to bring up my processor using Coreboot. I have been using Coreboot for some time and am familiar with its functionalities, but I am facing difficulties with the processor mentioned above. and Can I used to older version of coreboot where you give support for the Ice lake but the Intel Xeon 1700 D processor family launch in Dec 2022. so I have doubt I will work for this SOC as the Icelake is not updated from last 4 years in coreboot. I would be grateful if you could provide any relevant documentation, code, or instructions to help me with my request. I believe that my request will not only benefit me but also other members of the community who are facing similar challenges. Thank you for your time and consideration, and I look forward to hearing from you soon. -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: https://ticket.coreboot.org/my/account

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[coreboot - Other #479] (New) [legal] ISC License copyright violation in ubsan
by Jonas Termansen Nov. 16, 2023

Nov. 16, 2023

Issue #479 has been reported by Jonas Termansen. ---------------------------------------- Other #479: [legal] ISC License copyright violation in ubsan https://ticket.coreboot.org/issues/479 * Author: Jonas Termansen * Status: New * Priority: Normal * Target version: none * Start date: 2023-04-09 ---------------------------------------- Hi :) coreboot has removed my copyright statement from the ubsan implementation, which violates my copyright as licensed to you under the terms of the ISC License: ``` * Copyright (c) 2014, 2015 Jonas 'Sortie' Termansen. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * ... ``` The file in question is: https://github.com/coreboot/coreboot/blob/master/src/lib/ubsan.c The file does clearly state it's forked from my original ubsan implementation: https://gitlab.com/sortix/sortix/-/blob/master/libc/ubsan/ubsan.c However, the coreboot copy has removed my copyright notice, which is one of only two terms of the license. It's fine that the permission notice has been changed to `SPDX-License-Identifier: ISC` which is unambiguously information preserving, but removing my copyright notice is a loss of information. The copyright notice was removed in https://github.com/coreboot/coreboot/commit/16849bbe0c8a79277e1a682dcb42eaf… which moved my name to AUTHORS. Although a mention in AUTHORS is appreciated, it removes the association between the file's contents and my identity and my moral rights to my work. Although the full information is available in the git history, that's not good enough. I'm concerned that further copies of the file in other projects may lose the authorship information entirely. Please restore my copyright notice at the top of the file :) Jonas 'Sortie' Termansen -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: https://ticket.coreboot.org/my/account

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Tree maintenance and build nodes
by Kyösti Mälkki Aug. 6, 2023

Aug. 6, 2023

Hi A couple of questions, less technical than usual. Do we have any sample cases of bringing boards back from older branches? I would like to have a branch set up for bringing back some selected AGESA from 4.18 branch. My plan would be to backport features from ToT into said new branch and resolve issues there. Once considered clean enough, it should be a three commit drop (vendorcode, platform, boards) to land on master? Is there someone (corporate) currently funding or hiring personnel with reviews and tree maintenance as a priority? Is there currently anyone actually assigning from their existing resources to put attention to frameworks, while customers' board ports and resolving their issues have tight schedules? Regards, Kyösti Mälkki

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[coreboot - Feature #476] (New) Add option to convert coreboot-inited linear frame buffer to efifb directly
by Bill XIE Aug. 1, 2023

Aug. 1, 2023

Issue #476 has been reported by Bill XIE. ---------------------------------------- Feature #476: Add option to convert coreboot-inited linear frame buffer to efifb directly https://ticket.coreboot.org/issues/476 * Author: Bill XIE * Status: New * Priority: Normal * Category: coreboot common code * Target version: none * Start date: 2023-03-30 * Affected OS: GNU/Linux ---------------------------------------- Currently, the linear frame buffer that coreboot initializes should be handled by Linux kernel with dedicated driver "simplefb", but most installer of GNU/Linux distributions only enables "efifb" support, which causes a GNU/Linux installer kexec-ed from a Linux payload running atop simplefb unable to output graphics. Currently, Grub payload could turn coreboot-initialized simplefb to efifb, which can be easily examined from the dmesg log of GNU/Linux booted from Grub payload running atop coreboot-inited linear frame buffer (simplefb). Chainloading a Linux payload with a minimal Grub payload only containing module "linux" and "cbfs" could make the Linux payload running atop efifb, of which GNU/Linux installers can make use, but the related code could be ported to coreboot to make things easier. -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: https://ticket.coreboot.org/my/account

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disable efficient-cores or performance-cores in Intel 12th gen processors
by baptx June 28, 2023

June 28, 2023

Hello, For people who use the 12th generation of Intel Core processors, they may want to disable efficient-cores in the BIOS to improve performance ( https://www.reddit.com/r/intel/comments/thp7jh/disabling_the_efficiency_cor…) is it supported by coreboot or Dasharo? Some people may also want to disable performance-cores instead to save more battery ( https://www.reddit.com/r/overclocking/comments/x0xu1c/can_you_disable_perfo…) is it supported also? If some of these disabling option are not available, is there any plan to support them and is there a workaround currently? Thanks.

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