kgpe-d16: add AGESA 15h coreboot fork support by tlaurion · Pull Request #2092 · linuxboot/heads

tlaurion · 2026-04-22T18:07:40Z

Summary

Add coreboot-15h module pointing to AGESA-based 15h fork for kgpe-d16 board support
Move kgpe-d16 boards from unmaintained to maintained
Add TPM1 and TPM2 board variants with proper coreboot configs
Update CircleCI config to build kgpe-d16 boards
Add comprehensive board documentation referencing 15h.org wiki

Changes

New Module

Add coreboot-15h git-fork module pinned to specific commit
BUILD_LANGUAGES=c added to avoid Ada compiler errors with GCC toolchain
Supports up to 512GB DDR3 ECC RAM

Board Variants (8 total)

kgpe-d16_server-tpm1, kgpe-d16_server-tpm2
kgpe-d16_workstation-tpm1, kgpe-d16_workstation-tpm2
kgpe-d16_server-whiptail-tpm1, kgpe-d16_server-whiptail-tpm2
kgpe-d16_workstation-usb_keyboard-tpm1, kgpe-d16_workstation-usb_keyboard-tpm2

TPM Configuration

TPM1: CONFIG_TPM1=y, CONFIG_TPM_INIT=y, CONFIG_USER_TPM1=y
TPM2: CONFIG_TPM2=y, CONFIG_TPM2_MODE=spt, CONFIG_TPM2_PPI=y, CONFIG_OPENSSL=y

Initial Flash (REQUIRED)

Stock 2 MiB flash (W25Q16V) is NOT big enough for Heads - must be replaced with 16 MiB chip
Initial flash MUST be done externally (3.3V CH341A SPI programmer)
Chip location: bottom right corner of board (labeled BIOS)
CMOS clear after flashing: move CLRTC1 to 2-3, wait 20s, restore
After initial external flash, internal upgrades work like any other Heads board

Board Documentation

Board revisions: 1.02G, 1.03G, 1.04, 1.05 (revisions 1.04/1.05 recommended)
Hardware specs, TPM chips, VGA_SW1 jumper, fan control, flashing, BMC
15h.org wiki references

Workstation GPU Support

Tested: Nvidia GPUs (NvForcePost=1)
Linux config: nouveau, radeon, amdgpu

CircleCI

Added all 8 kgpe-d16 TPM1 and TPM2 build jobs

Known Issues

TPM support still in progress (untested)

Supersedes #1931

Copilot

Pull request overview

This PR adds support for building the KGPE-D16 boards against the AGESA-based coreboot “15h” fork, updates board metadata/docs to reflect the new status, and wires the KGPE-D16 builds into CircleCI.

Changes:

Add a new coreboot-15h git-fork module pinned to a specific commit.
Switch KGPE-D16 board configs to use CONFIG_COREBOOT_VERSION=15h and simplify the per-board coreboot .config fragments.
Add KGPE-D16 jobs to the CircleCI workflow and update the boards/testers documentation.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
`modules/coreboot`	Introduces the new `coreboot-15h` fork module and pins its commit.
`doc/BOARDS_AND_TESTERS.md`	Updates KGPE-D16 entry to reflect usage of the 15h fork.
`config/coreboot-kgpe-d16_workstation.config`	Replaces the previous full coreboot config with a minimal fragment for the KGPE-D16 workstation variant.
`config/coreboot-kgpe-d16_workstation-usb_keyboard.config`	Same as above for workstation USB keyboard variant.
`config/coreboot-kgpe-d16_server.config`	Same as above for server variant.
`config/coreboot-kgpe-d16_server-whiptail.config`	Same as above for server-whiptail variant.
`boards/kgpe-d16_workstation/kgpe-d16_workstation.config`	Switches board to `CONFIG_COREBOOT_VERSION=15h` and adds board notes.
`boards/kgpe-d16_workstation-usb_keyboard/kgpe-d16_workstation-usb_keyboard.config`	Switches board to `CONFIG_COREBOOT_VERSION=15h` and adds board notes.
`boards/kgpe-d16_server/kgpe-d16_server.config`	Switches board to `CONFIG_COREBOOT_VERSION=15h`.
`boards/kgpe-d16_server-whiptail/kgpe-d16_server-whiptail.config`	Switches board to `CONFIG_COREBOOT_VERSION=15h`.
`.circleci/config.yml`	Adds KGPE-D16 builds to CI (but currently with target naming/caching issues).

Comments suppressed due to low confidence (4)

boards/kgpe-d16_workstation-usb_keyboard/kgpe-d16_workstation-usb_keyboard.config:15

Typo in board notes: "work around" should be "workaround".
boards/kgpe-d16_workstation/kgpe-d16_workstation.config:18
Typo in board notes: "work around" should be the single word "workaround".
boards/kgpe-d16_workstation/kgpe-d16_workstation.config:18
Typo in board notes: "trubble" should be "trouble".
boards/kgpe-d16_workstation-usb_keyboard/kgpe-d16_workstation-usb_keyboard.config:15
Typo in board notes: "trubble" should be "trouble".

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Pull request overview

Copilot reviewed 30 out of 30 changed files in this pull request and generated 5 comments.

Comments suppressed due to low confidence (4)

boards/kgpe-d16_workstation-tpm1/kgpe-d16_workstation-tpm1.config:27

CONFIG_COREBOOT_VERSION was switched to the new 15h fork, but this board still points CONFIG_COREBOOT_CONFIG at config/coreboot-kgpe-d16_workstation.config, which does not exist (only -tpm1/-tpm2 coreboot configs are present). This will break builds; update the path to the correct kgpe-d16_workstation-tpm1 coreboot config file.
boards/kgpe-d16_server-whiptail-tpm1/kgpe-d16_server-whiptail-tpm1.config:25
This board now uses CONFIG_COREBOOT_VERSION=15h, but CONFIG_COREBOOT_CONFIG still points to config/coreboot-kgpe-d16_server-whiptail.config, which is not present (only *-server-whiptail-tpm1/tpm2 configs exist). Update CONFIG_COREBOOT_CONFIG to the correct kgpe-d16_server-whiptail-tpm1 coreboot config so the board builds successfully.
boards/kgpe-d16_workstation-usb_keyboard-tpm1/kgpe-d16_workstation-usb_keyboard-tpm1.config:24
This board still references config/coreboot-kgpe-d16_workstation-usb_keyboard.config, but the repo only contains the new -usb_keyboard-tpm1/-usb_keyboard-tpm2 coreboot config filenames. This mismatch will cause make BOARD=kgpe-d16_workstation-usb_keyboard-tpm1 to fail; update CONFIG_COREBOOT_CONFIG to the correct *-tpm1 file.
boards/kgpe-d16_server-tpm1/kgpe-d16_server-tpm1.config:23
This board now uses CONFIG_COREBOOT_VERSION=15h, but CONFIG_COREBOOT_CONFIG points to config/coreboot-kgpe-d16_server.config, which is not present in the repo (only coreboot-kgpe-d16_server-tpm1/tpm2 configs exist). Update the path to the correct kgpe-d16_server-tpm1 coreboot config to avoid build failures.

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tlaurion · 2026-04-22T19:04:49Z

as per BOARDS_AND_TESTERS.md, testing and review needed. specify which variant you tested, will move others to untested before merging

KGPE-D16 (Bulldozer: AMD Family 15h CPU) - dropped in coreboot 4.12, brought back in 15h fork: @arhabd @zifxify

Copilot

Pull request overview

Copilot reviewed 30 out of 30 changed files in this pull request and generated 8 comments.

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Copilot reviewed 30 out of 30 changed files in this pull request and generated 1 comment.

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Copilot reviewed 34 out of 34 changed files in this pull request and generated 7 comments.

Comments suppressed due to low confidence (5)

boards/kgpe-d16_workstation/kgpe-d16_workstation.config:18

Typo: "work around" should be "workaround".
boards/kgpe-d16_workstation/kgpe-d16_workstation.config:18
Typo: "trubble" should be "trouble".
boards/kgpe-d16_workstation-usb_keyboard/kgpe-d16_workstation-usb_keyboard.config:15
Typo: "work around" should be "workaround".
boards/kgpe-d16_workstation-usb_keyboard/kgpe-d16_workstation-usb_keyboard.config:16
Typo: "trubble" should be "trouble".
boards/kgpe-d16_workstation/kgpe-d16_workstation.config:17
Typo/consistency: "qubes" should be capitalized as "Qubes" (as used elsewhere in the sentence).

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Copilot

Pull request overview

Copilot reviewed 34 out of 34 changed files in this pull request and generated 3 comments.

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Copilot

Pull request overview

Copilot reviewed 34 out of 34 changed files in this pull request and generated 4 comments.

Comments suppressed due to low confidence (1)

boards/kgpe-d16_server-whiptail/kgpe-d16_server-whiptail.config:25

This whiptail board config uses the BMC serial console (ttyS1), but the referenced coreboot config (config/coreboot-kgpe-d16_server-whiptail-tpm1.config) currently sets CONFIG_LINUX_COMMAND_LINE to console=tty0. That mismatch can hide early output / break headless boot. Please update the coreboot config command line to use ttyS1 (consistent with the TPM2 whiptail variant).

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- Add coreboot-15h module pointing to AGESA-based 15h fork - Move kgpe-d16 boards from UNMAINTAINED to maintained - Add TPM1 and TPM2 board variants with proper coreboot configs - Add defconfig and oldconfig helper targets documentation - Update CircleCI config to build kgpe-d16 boards - Add board documentation referencing 15h.org wiki Supersedes #1931 Signed-off-by: Thierry Laurion <insurgo@riseup.net>

Copilot

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Copilot reviewed 35 out of 35 changed files in this pull request and generated no new comments.

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- Add coreboot-15h module pointing to AGESA-based 15h fork - Move kgpe-d16 boards from UNMAINTAINED to maintained - Add TPM1 and TPM2 board variants with proper coreboot configs - Add defconfig and oldconfig helper targets documentation - Update CircleCI config to build kgpe-d16 boards - Add board documentation referencing 15h.org wiki Supersedes #1931 Signed-off-by: Thierry Laurion <insurgo@riseup.net>

…-d16-15h-coreboot Signed-off-by: Thierry Laurion <insurgo@riseup.net> # Conflicts: # modules/coreboot

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tlaurion mentioned this pull request Apr 22, 2026

15h coreboot kgpe-d16 #1931

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tlaurion added 2 commits May 5, 2026 20:21

Merge remote-tracking branch 'origin/kgpe-d16-15h-coreboot' into kgpe…

e76c8f3

…-d16-15h-coreboot Signed-off-by: Thierry Laurion <insurgo@riseup.net> # Conflicts: # modules/coreboot

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Summary

Changes

New Module

Board Variants (8 total)

TPM Configuration

Initial Flash (REQUIRED)

Board Documentation

Workstation GPU Support

CircleCI

Known Issues

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tlaurion commented Apr 22, 2026 •

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