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 sub_5E4 init, then sub_C50 for ACPI SMM setup
• sub_5E4 -- UEFI driver init: caches ImageHandle, SystemTable, BootServices, RuntimeServices
• sub_C50 -- Core ACPI SMM platform initialization: registers PM1/SMI handlers
• sub_1F20 / sub_360 -- ACPI event notification cleanup/teardown callbacks
• sub_223C -- Debug ASSERT handler
• sub_B8C -- Error path cleanup handler

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