TcgPlatformSetupPolicy, 0100, 0x15a0 (5536 bytes), Phase 2

TCG (Trusted Computing Group) Platform Setup Policy DXE driver. Reads the 814-byte "Setup" NV variable and the "PCRBitmap" variable to initialize a TCG_PLATFORM_SETUP_POLICY data structure (27 bytes covering TPM PCR enable bits, physical presence, and TCG protocol settings). Installs the TCG_PLATFORM_SETUP_POLICY_PROTOCOL to expose these policy values to other TCG platform drivers, and registers a notification callback for policy synchronization.

Key Functions

• TcgPlatformSetupPolicyDxeEntryPoint -- reads Setup/PCRBitmap vars, installs protocol
• TcgPlatformSetPolicyData -- accepts updated TPM policy data, merges into Setup variable
• TcgPlatformSetupPolicyNotify -- EVT_NOTIFY_SIGNAL callback for policy sync
• TcgPlatformInitPolicyFromSetup -- initializes the 27-byte policy from Setup variable offsets

Protocols/Dependencies

• TCG_PLATFORM_SETUP_POLICY_PROTOCOL, UEFI Variable Services
• Setup variable (gSetupVariableGuid), PCRBitmap variable, TcgInternalSyncFlag

Platform

x86-64, UEFI DXE_DRIVER, VS2015 DEBUG, LenovoServerPkg