SpsPei

Index	Module	Size	Phase
363	SpsPei	13.1 KB (13,412 B)	PEI

Overview

Server Platform Services (SPS) PEI module. Initializes and manages the Management Engine (ME) during the PEI phase by determining the boot path (S3 vs non-S3), waiting for ME firmware initialization, and negotiating the ME-BIOS interface version. Handles Node Manager (NM) power policies, sends END_OF_POST during S3 resume, configures ICC clocks, and performs pre-DID resets.

Key Functions

SpsPeiEntryPoint: Main dispatch (detects SPS firmware, reads boot mode)
SpsS3Path: S3 resume path (waits for ME, END_OF_POST, clock config)
PpiNotifyHeciReady: Non-S3 path (HECI ready notification)
GetMeSpsPolicy: SPS policy PPI retrieval
Ppi registration for gHeci1PpiGuid and gSpsPolicyPpiGuid

Dependencies

ME Firmware HOB (gMeFwHobGuid)
SPS Info / Policy HOBs (gSpsInfoHobGuid, gSpsPolicyHobGuid)
HECI1 PPI (gHeci1PpiGuid)
DebugLib, HobLib, BaseMemoryLib, IoLib, TimerLib, PcdLib

Platform

Arch: IA32 (PE32)
Image Base: 0xFFDA3630
Source: e:\hs\PurleySktPkg\Me\Sps\Pei\SpsPei.c
SHA256: 7d55998a6e8977b296c0fa58200f4e02d0c947e7e8b5f752c08bacb7e39bd48b
Toolchain: VS2015 DEBUG