TcgDxe

Overview

TcgDxe is a UEFI DXE driver implementing the Trusted Computing Group (TCG) protocol interface. It provides TPM (Trusted Platform Module) hardware initialization, memory comparison utilities, and platform-specific CPU control functions for managing trusted boot measurements.

The module includes 21 functions total, covering low-level CPU intrinsics (pause, RDTSC, enable/disable interrupts), memory operations (CompareMemInternal), TPM initialization (TpmInitHardware), and the standard UEFI module entry point.

Key Functions

• ModuleEntryPoint -- Standard UEFI DXE entry point
• TpmInitHardware -- TPM hardware initialization routine
• CompareMemInternal -- Constant-time memory comparison
• InternalCopyMem, InternalSetMem -- Memory copy and set utilities
• _enable_w, _disable_w -- CPU interrupt enable/disable wrappers
• __rdtsc_w -- RDTSC instruction wrapper for timestamp

Dependencies

• UEFI Boot Services, Runtime Services
• TCG/TPM protocols
• UEFI Specification v2.x

Platform

Lenovo HR650X (x86_64, PE32+)