linux-kernel - [PATCH v4 0/4] Allow coreboot modules to autoload and enable cbmem in the arm64 defconfig

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Date: Mon, 12 Feb 2024 09:50:04 -0500
From: Nícolas F. R. A. Prado <nfraprado@...labora.com>
To: Tzung-Bi Shih <tzungbi@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>, Brian Norris <briannorris@...omium.org>, 
 Julius Werner <jwerner@...omium.org>, 
 Masahiro Yamada <masahiroy@...nel.org>, 
 Nathan Chancellor <nathan@...nel.org>, Nicolas Schier <nicolas@...sle.eu>, 
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, kernel@...labora.com, 
 chrome-platform@...ts.linux.dev, linux-kernel@...r.kernel.org, 
 linux-kbuild@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 Nícolas F. R. A. Prado <nfraprado@...labora.com>
Subject: [PATCH v4 0/4] Allow coreboot modules to autoload and enable cbmem
 in the arm64 defconfig

This series adds the missing pieces to the coreboot bus and the module
alias generation to allow coreboot modules to be automatically loaded
when matching devices are detected.

The configs for cbmem coreboot entries are then enabled in the arm64
defconfig, as modules, to allow reading logs from coreboot on arm64
Chromebooks, which is useful for debugging the boot process.

Changes in v4:
- Added driver_data to device_id struct
- Link to v3: https://lore.kernel.org/r/20240117-coreboot-mod-defconfig-v3-0-049565a27bba@collabora.com

Changes in v3:
- Merged all "add to module device table" commits into a single commit
  which also changes the coreboot_driver struct to contain an id table
  and avoid unused variable warnings for the id tables.

Changes in v2:
- Added commits for vpd, memconsole and framebuffer drivers to add them
  to the module device table

---
Nícolas F. R. A. Prado (4):
      firmware: coreboot: Generate modalias uevent for devices
      firmware: coreboot: Generate aliases for coreboot modules
      firmware: coreboot: Replace tag with id table in driver struct
      arm64: defconfig: Enable support for cbmem entries in the coreboot table

 arch/arm64/configs/defconfig                   |  3 +++
 drivers/firmware/google/cbmem.c                |  8 +++++++-
 drivers/firmware/google/coreboot_table.c       | 20 +++++++++++++++++++-
 drivers/firmware/google/coreboot_table.h       |  3 ++-
 drivers/firmware/google/framebuffer-coreboot.c |  8 +++++++-
 drivers/firmware/google/memconsole-coreboot.c  |  8 +++++++-
 drivers/firmware/google/vpd.c                  |  8 +++++++-
 include/linux/mod_devicetable.h                | 10 ++++++++++
 scripts/mod/devicetable-offsets.c              |  3 +++
 scripts/mod/file2alias.c                       | 10 ++++++++++
 10 files changed, 75 insertions(+), 6 deletions(-)
---
base-commit: 0f067394dd3b2af3263339cf7183bdb6ee0ac1f8
change-id: 20240117-coreboot-mod-defconfig-826b01e242d9

Best regards,
-- 
Nícolas F. R. A. Prado <nfraprado@...labora.com>