PostScreenInfo

Module: 0087
File: PostScreenInfo.efi
Size: 54432 bytes (0xD4A0)
Phase: DXE (Driver Execution Environment)
Source package: LenovoServerPkg
Build: VS2015, X64, DEBUG

Overview

POST screen information display module for Lenovo ThinkSystem HR650X servers. Displays system configuration information (CPU, Memory, BMC, ME, HDD, NVMe) during the UEFI POST phase. Integrates with HII to provide a setup form and communicates with server setup variables via the "ServerSetup" NVRAM variable. Also handles OEM FRU data updates.

Key Functions

Function	Description
`_ModuleEntryPoint`	UEFI DXE driver entry point; calls PostScreenDriverEntry
`ProcessLibraryConstructorList`	Initializes library globals (boot/runtime/DXE services, MM PCI USRA, HII package list)
`PostScreenDriverEntry`	Main driver entry; initializes HII forms, loads config, registers HII Config Access protocol, registers "ServerSetup" variable callback
`PostScreenGuidInit`	Initializes GUID structures for the HII form
`PostScreenConfigLoad`	Loads POST screen display configuration
`PostScreenMmioInit`	Initializes MMIO access for PCI USRA
`PostScreenHiiExtract`	Extracts HII package list for the POST screen form
`PostScreenHiiRegister`	Registers the HII driver and installs Config Access protocol
`PostScreenVarInit`	Initializes UEFI variables for POST screen configuration
`PostScreenSetupData`	Propagates ServerSetup variable values to POST screen display data
`PostScreenCallback`	HII Config Access callback for form interactions

Protocols/Dependencies

HII Framework - HII Config Access, HII Config Routing, HII Package List
GraphicsOutput Protocol - GOP for screen display
DevicePathLib - Device path manipulation
MmPciUsra Protocol - MMIO PCI USRA access
HobLib - HOB list retrieval
PcdLib - Platform Configuration Database
ServerSetup NVRAM variable - Platform setup configuration data
OEM FRU data update module (OemUpdateFru.c)

Platform

Lenovo ThinkSystem HR650X (Purley platform, Intel Xeon Scalable)