RuntimeSmm

Index: 0204
Size: 5,476 bytes (1564h)
Phase: SMM (DXE_SMM_DRIVER)
Source Package: AmiModulePkg\RuntimeSmm\RuntimeSmm.c

Overview

Minimal UEFI SMM runtime driver that bridges boot-time and SMM runtime services. Initializes global pointers to Boot Services, Runtime Services, and System Table; locates the SmmBase2 protocol to obtain the SMM Services Table (gSmst); registers a protocol notification handler for the SMM Runtime Services Table protocol. Uses SetJump/LongJump for error recovery. Has no import table -- all protocol interfaces resolved via LocateProtocol.

Module Layout

• Recovered into a single implementation unit: RuntimeSmm.c with companion declarations in RuntimeSmm.h.
• Symbol recovery applied for function/variable names where map evidence was explicit; no local file split was identified in evidence.

Key Functions

• _ModuleEntryPoint -- recovered module entry symbol (maps to SMM entry)
• ModuleEntryPoint -- local compatibility wrapper preserved in source for symbol continuity
• RuntimeSmmCacheSystemServices (0x44C) -- Initializes gImageHandle, gST, gBS, gRT, locates SmmBase2, retrieves gSmst
• RuntimeSmmInitJumpState (0x58C) -- Main dispatch: SetJump error recovery, calls RuntimeSmmInitialize (0x768) init, cleans up with LongJump
• RuntimeSmmInitialize (0x768) -- Driver init: caches system tables, locates SMM Runtime Services Table protocol, calls its callback, installs protocol handlers
• RuntimeSmmSetJump / RuntimeSmmLongJump (0x300/0x3A0) -- SetJump/LongJump: saves/restores GP registers, XMM registers, MXCSR into 248-byte buffer
• RuntimeSmmRegisterProtocolNotifyTable (0x64C) -- Allocates buffer with protocol GUID data, registers via SmmRegisterProtocolNotify
• RuntimeSmmRegisterRuntimeServices / RuntimeSmmRegisterStatusCodeProtocol (0x9F8/0xA80) -- Protocol registration for Runtime Services and Status Code in both SMM and boot modes

Protocols

• SmmBase2 protocol (SMM_SERVICES_TABLE_GUID)
• SMM Runtime Services Table protocol
• gEfiStatusCodeRuntimeProtocolGuid (DebugLib)

Platform

HR650X (Purley), built from PurleyPlatformPkg/AmiModulePkg, DEBUG VS2015 X64