Tpm20Acpi

Index: 0073 | Size: 8672 bytes | Arch: x64 | Phase: DXE

Overview

This DXE driver provides TPM 2.0 ACPI table initialization and management for the HR650X platform. It communicates with the TPM hardware via memory-mapped I/O at 0xFED40000 and publishes ACPI tables (TPM2, SSDT) describing the TPM device to the OS. The driver detects TPM 2.0 hardware, locates DSDT/RSDT/XSDT tables, programs ACPI SSDT tables with TPM configuration information, and supports the TPM Physical Presence (TPP) interface.

Key Functions

• ModuleEntryPoint -- Driver entry; initializes UEFI globals, locates HOB list and PCD protocol, maps PCI Express MMIO
• DetectTpmHardware -- Detects TPM 2.0 hardware presence via memory-mapped registers at 0xFED40000
• LocateDsdtTable -- Locates the DSDT table by walking RSDT/XSDT
• ProgramTpmAcpiTables -- Programs ACPI SSDT tables with TPM configuration information

Protocols / Dependencies

• ACPI Support Protocol
• PCD Protocol
• EFI DxeServicesTable (for HOB list)

Platform

HR650X (Dell, Intel)