AcpiSmmPlatform

Index: 0213
Size: 34,916 bytes (8864h)
Phase: SMM (DXE_SMM_DRIVER)
Source Package: PurleyPlatPkg\Acpi\DxeSmm\AcpiSmm\AcpiSmmPlatform

Overview

SMM driver for platform-specific ACPI SMI handling on Purley-based systems. Manages ACPI power management SMI events including system sleep state transitions (S3/S4/S5), platform PM1/PM control register trapping, and ACPI fixed event routing. Installs SMI handlers for power button, sleep button, and other ACPI-defined events. Part of the PurleyPlatPkg ACPI DXE/SMM stack that coordinates ACPI event handling between DXE and SMM phases.

Key Functions

• ModuleEntryPoint -- Main entry: calls InitializeSmmAcpiPlatform() then InitializeAcpiSmmPlatformHandlers()
• InitializeSmmAcpiPlatform (sub_5E4) -- UEFI module pre-initialization; caches ImageHandle/SystemTable and table pointers
• InitializeAcpiSmmPlatformHandlers (sub_C50) -- Core ACPI SMM platform initialization: registers PM1/SMI handlers
• ReleaseSmmAcpiPlatformResources (sub_1F20) -- ACPI event notification/context cleanup callback
• UnregisterSmmAcpiPlatformCallbacks (sub_360) -- ACPI event callback teardown/unregistration helper
• SmmAcpiPlatformAssert (sub_223C) -- DEBUG assertion trap used for unreachable-code checks
• CleanupAcpiSmmPlatformOnFailure (sub_B8C) -- Error path cleanup handler when module returns failure
• SetupAcpiSmmJumpRecovery (sub_2C0) -- Set-jump style guard around init path to support recovery flow

Protocols

• EFI_SMM_SYSTEM_TABLE2 for SMM services
• EFI_SMM_BASE2_PROTOCOL
• ACPI SMM platform protocol (platform-specific)
• Power Management 1 (PM1) register block trapping
• SMM IO trap protocol for PM IO port trapping

Platform

HR650X (Purley), built from PurleyPlatPkg\Acpi\DxeSmm\AcpiSmm, DEBUG VS2015 X64