Linaro will work on updating U-Boot one way or another.
Heinrich: high monotonic count, daylight saving flag and timezone offset could be backed by UEFI variables. Etienne: user could modify. Could be marked read-only to avoid user update. Ilias: ok for DST and offset but monotonic could be deleted, could cause issues.
Etienne: do we have an available monotonic counter in the RPMB? Heinrich: we have 1/2 MB; let's find a free byte there. Add a new function to StMM?
Merge patch; acked-by from Ilias.
Then post a patch with a note about security: if high part cannot survive reset do not implement at all.
Point at 23.4.4 Mapping Firmware Management Protocol Descriptors to ESRT Entries
Ilias: Linux RPMB patches are in v3 or v4.
When supplementing firmware with generic ops for efivars, what should fwts test in the end? The actual firmware interface, not capable of SetVariable() at runtime, or the resulting interface?