EBBR Notes 2025.11.05

Attendees

• Heinrich Schuchardt (Canonical)
• Etienne Carrière (STMicroelectronics)
• Vincent Stehlé (Arm)

Agenda

• Pull request #142: SCMI requirements
• Pull request #148: Fix bibliography alignment for PDF and HTML
• Pull request #149: chapter1: do not mention levels
• Pull request #150: Clarify compatibility

Notes

• All four pull requests were accepted for merge.

Raw notes

• Heinrich joining from Gothenburg
• Pull request #142: SCMI requirements
  • Heinrich has reviewed
  • Etienne is happy as well
  • Ilias told us he was happy, too
  • -> merge it
• Pull request #148: Fix bibliography alignment for PDF and HTML
  • Heinrich has reviewed, suggests changing the pdf links, too
  • Two commits?
  • -> merge it
  • -> then, Heinrich will send a new pull request
• Pull request #149: chapter1: do not mention levels
  • Heinrich has reviewed
  • -> merge it
• Pull request #150: Clarify compatibility
  • Heinrich has reviewed
  • We have the SEMVER reference already
  • Etienne is happy as well
  • -> merge it
  • Queue is empty now :)
• SMBIOS table
  • Passing with Devicetree (for legacy boot, non-UEFI)
  • Discussion on the ML
• ACPI BGRT
  • Boot Graphics Resource Table, Vendor logo
  • No equivalent with Devicetree
  • Not in UEFI, either
  • U-Boot has BGRT on ACPI (Simon's fork?)
  • Push binding to Devicetree?
  • Look at ACPI spec for format details (BMP or else)
• EDK II discussion on DT_FIXUP protocol
  • Android GBL capable of using the protocol
• Ubuntu Stubble uses the protocol, too
  • Selects a bundled Devicetree according to SMBIOS data
  • Used on a laptop

Links

• https://github.com/ARM-software/ebbr/pull/142
• https://github.com/ARM-software/ebbr/pull/148
• https://github.com/ARM-software/ebbr/pull/149
• https://github.com/ARM-software/ebbr/pull/150
• https://github.com/tianocore/edk2/pull/11667
• https://github.com/U-Boot-EFI/EFI_DT_FIXUP_PROTOCOL/blob/master/references.rst
• https://github.com/ubuntu/stubble