RedBear-OS/recipes/core/base/P24-acpi-s5-derivation-shutdown-semantics.patch at 0.2.2 - RedBear-OS - Gitea: Git with a cup of tea

vasilito/RedBear-OS

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vasilito 2a5eff93ec P24: ACPI S5 derivation with shutdown semantics and error propagation

Add deterministic S5 (soft-off) state derivation and structured error
handling to acpid. Derive S5 parameters once at startup (or retry at
shutdown if AML was not ready) instead of re-parsing the _S5 package
on every shutdown attempt. Replace unit-return set_global_s_state()
with ShutdownResult enum for proper error propagation and fallback
handling.

Changes:
- S5State struct caches SLP_TYPa/b, PM1a/b ports, derivation timestamp
- ShutdownError enum: MissingFadt, Pm1aZero, AmlNotReady, S5NotFound,
  S5NotPackage, SlpTypNotInteger, S5WriteFailed
- ShutdownResult enum: Ok, FallbackReset, Err(ShutdownError)
- derive_s5_state() method with early init attempt and lazy fallback
- set_global_s_state() returns ShutdownResult instead of ()
- Early S5 derivation in AcpiContext::init() logs AML readiness status
- main.rs logs shutdown result for debugging

This is W2.1/W2.2 from ACPI-IMPROVEMENT-PLAN.md.

2026-05-19 02:43:58 +03:00

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