AddressTranslationDsmMemRas

Function Table

Address	Name
	UefiBootServicesTableLibConstructor
	DebugPrint
	DebugAssert
	IsAddressInSmram
	FreeMemory
	SetJump
	LongJump
	AddressTranslationDsmEntry
	RegisterSwSmi
	SwSmiHandler
	InstallSsdt
	GetSectionFromFv
	ModuleEntryPoint
Global	variables
EFI_HANDLE	*gImageHandle = NULL;
SMI	communication buffer (0x100 bytes allocated via AllocatePool)
ADDRESS_TRANSLATION_DSM_COMMUNICATION_BUFFER	*mCommunicationBuffer = NULL;
SMRAM	ranges for memory allocation tracking
EFI_SMRAM_DESCRIPTOR	*mSmramRanges = NULL;
Module	status tracking
EFI_STATUS	mModuleStatus = EFI_SUCCESS;
Protocol	GUIDs (platform-specific)
EFI_GUID	gMemRasProtocolGuid = { 0x6D7E4A32, 0x9A73, 0x46BA, { 0x94, 0xA1, 0x5F, 0x2F, 0x25, 0xEF, 0x3E, 0x29 } };
Locate	SMM Base2 protocol to get SMM System Table
Status	= gBS->LocateProtocol (&gEfiSmmBase2ProtocolGuid, NULL, (VOID )&gSmst);**
Get	SMM Access2 protocol for SMRAM discovery
Status	= gBS->LocateProtocol (&gEfiSmmAccess2ProtocolGuid, NULL, (VOID )&SmmAccess);**
Query	SMRAM capabilities (expected to return EFI_BUFFER_TOO_SMALL initially)
Status	= SmmAccess->GetCapabilities (SmmAccess, &SmramSize, NULL);
Allocate	SMRAM ranges descriptor
mSmramRanges	*= (EFI_SMRAM_DESCRIPTOR )SmramAllocatePool (SmramSize);**
Each	descriptor is 0x20 (32) bytes
mSmramRangeCount	= SmramSize >> 5;
Check	CMOS debug level at offset 0x4C
DebugLevel	= IoRead8 (0x70);
Save	non-volatile GPRs
Locate	MemRas protocol
Status	= gSmst->SmmLocateProtocol (&gMemRasProtocolGuid, NULL, (VOID )&mMemRas);**
Allocate	communication buffer (sizeof = 0x100 bytes)
Status	= gBootServices->AllocatePool (
Register	SW SMI handler
Status	= RegisterSwSmi ();
Install	patched SSDT
Status	= InstallSsdt ();
Locate	SMM SW Dispatch2 protocol
Status	= gSmst->SmmLocateProtocol (
Register	SMI handler with input value 0x97 (151)
Store	the SW SMI input value in the communication header
If	already registered, treat as unsupported
if	(Status == EFI_ALREADY_STARTED) {
Check	MemRas protocol availability
if	(mMemRas == NULL) {
Clear	stack buffer
ZeroMem	(&Buffer, sizeof (Buffer));
Set	status to "in progress" (2)
if	(CommBuffer->Command == COMMAND_GET_ERROR_LOG) {
if	(CommBuffer->Command == COMMAND_CLEAR_ERROR_LOG) {
Copy	input data from communication buffer
CopyMem	*(&Buffer, (VOID )(UINTN)CommBuffer->Address0, sizeof (Buffer));**
If	command succeeded, copy results back with sentinel handling.
Fields	are conditionally written: if the output field value equals the
sentinel	(-1 for QWORD/DWORD, 0xFF for BYTE), the original value is preserved.
if	(CommBuffer->Status == COMMAND_STATUS_SUCCESS) {
Locate	ACPI Table protocol
Status	= gBootServices->LocateProtocol (
Read	SSDT firmware file by GUID from Firmware Volume
Status	= GetSectionFromFv (
Search	for the SSDT signature pattern to patch.
Offset	= (UINTN)SsdtData + 36;
ExtOpPrefix	Data[1] == 0x80 && // CreateField/OpRegion
DWordConst	Data[12] == 0x0C) { // DWordConst
Patch	the buffer address to point to the communication buffer
Install	the SSDT ACPI table
Locate	firmware volume protocol by image handle
if	(gImageHandle == NULL) {
Read	the raw file section
Status	= FvProtocol->ReadSection (
Initialize	boot services and SMM globals
UefiBootServicesTableLibConstructor	(ImageHandle, SystemTable);
Set	module status to EFI_SUCCESS initially
mModuleStatus	= 0x8000000000000001uLL;
Attempt	to initialize with SetJump for error recovery
if	(SetJump (&JumpBuffer) == 0) {
Update	module status if needed
if	**(Status >= 0	mModuleStatus < 0) {**
Check	final status and free memory if failed
Status	= mModuleStatus;

Generated by HR650X BIOS Decompilation Project