Re: [PATCH] firmware: coreboot: Don't skip CBMEM entries outside of known memory

[Tzung-Bi Shih]

On Sat, Oct 17, 2026 at 11:03:51AM +0200, Michał Kopeć wrote:
> coreboot leaves CBMEM out of the /memory node of the device tree that it
> passes to FIT payloads, e.g. LinuxBoot on arm64 Chromebooks, and only
> lists it in the memory reservation block. The kernel has no resource for
> that memory, so region_intersects() reports it as neither System RAM nor
> Reserved memory, and since commit e31ecda9e3af ("firmware: coreboot:
> Skip no-map CBMEM entries") all CBMEM entries are skipped on such boards.
> That loses the coreboot log, the TPM event log and everything else that
> CBMEM devices expose.
> 
> [...]

Applied to

    https://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux.git for-firmware-next

[1/1] firmware: coreboot: Don't skip CBMEM entries outside of known memory
      commit: e094fd05defaf0b05774ea1c65fc2d0ab798c809

Thanks!