HwpLvtSmm

Index

0180

Size

1B24h (6,948 bytes)

Phase

DXE SMM (System Management Mode driver)

Source Package

PurleySktPkg/Smm/PowerManagement/HwpLvtSmm

Overview

HwpLvtSmm is an SMM driver that manages Hardware P-state (HWP) Local Vector Table (LVT) settings on Intel Purley platform SKT processors. It initializes and configures MSR-based LVT entries related to HWP, ensuring correct interrupt routing for power management events within System Management Mode.

Key Functions

• ModuleEntryPoint (0x464): Entry point; initializes the SMM driver, performs HWP LVT configuration, and registers SMI handlers as needed.
• sub_510: Performs platform-specific HWP Local Vector Table initialization, programming MSR registers for power management interrupt delivery.
• sub_A00: Main configuration subroutine that sets up the HWP LVT entries based on platform policies.
• sub_280 / sub_320: SMM library initialization and cleanup routines (SMM base library protocol management).
• sub_CD8 / sub_D8C: Debug assertion and error handling routines used for status validation.

Strings

• Build path: PurleySktPkg\Smm\PowerManagement\HwpLvtSmm
• ASSERT_EFI_ERROR status validation messages
• AutoGen.c debug assertions (lines 345, 360)

Platform

Intel Purley (HR650X server platform)