haf-ec-service: Time and Alarm Service #156

Activity

1. philgweber

   assigned

   dymk

   on Mar 6, 2025
2. philgweber

   added the

   Enhancement

   issue type on Mar 6, 2025
3. jeffglaum

   added this to the Deliver Unified EC Service Interface Design milestone on Nov 17, 2025
4. dymk commented on Sep 30, 2026

   

   dymk

   on Sep 30, 2026

   Contributor

   More actions

   Landed scope and remaining work (2026-09-30)

   The synchronous TimeAlarm command path is implemented upstream. The EC already supported all nine commands; the missing secure-world SetRealTime (3), ClearWakeStatus (5), and SetExpiredTimerPolicy (8) relay handlers landed in OpenDevicePartnership/odp-secure-services#101.

   Qualification and contract work also landed:

   • UEFI two-QEMU setter/readback coverage: Exercise TimeAlarm setter readbacks odp-platform-qemu-arm-virt#179
   • Actual Windows ACPI RTC qualification and method-specific setter status handling: Qualify RTC methods through Windows ACPI odp-platform-qemu-arm-virt#180
   • Typed ACPI setter error checking: Check ACPI RTC setter return statuses odp-platform-common#219
   • Timestamp Buffer DSL: Add RTC timestamp Buffer literals to DSL odp-platform-common#220
   • EC interface documentation: Clarify TimeAlarm relay and ACPI contracts odp-embedded-controller#47

   The original peripheral-memory wording is superseded by the existing relay transport; the deprecated eSPI memory map was removed in #707 and must not be rebuilt.

   Remaining concerns are separate: power-source integration and actual timer-triggered wake (#689), asynchronous relay notifications (#733), and any required ALERT/SCI/VWire handling (#160). Status-bit tests do not demonstrate physical wake. NEVER policy coverage proves setter acceptance and peer isolation, not independently distinguishable readback.

   This comment reconciles delivered scope without closing this broader issue. Maintainers should confirm that the remaining notification/wake obligations are fully owned by the separate trackers before closing it.