Tcg2Dxe

Function Table

Address	Name	Description
	DebugPrint
	Tcg2GetSpecVersion
	MorCheckAndClear
	TreeSetActivePcrs
	TreeGetResultOfSetActivePcrs
	TreeGetEventLog
	Tpm20DxeAcpiUpdate
	TpmServFlagsLockCallback
	CopyTcgLog
	InstallTrEEProtocol
	TrEEUpdateTpmDeviceASL
	LibGetDsdt
	DriverInit
	TreeDxeEntry
	ModuleEntryPoint
	SecureBootSetupCheck
Globals	(data segment at 0x13740-0x13C60)
Protocol	Interfaces
0x13B18	*static EFI_RUNTIME_SERVICES gRT; // 0x13B28**
0x13B10	static EFI_HANDLE gImageHandle; // 0x13B20
0x13B48	// ACPI table pointers (found via LibGetDsdt)
0x13B58	static UINT64 mXsdtDsdtAddr; // 0x13B50
Event	log buffers (allocated via BS->AllocatePool)
0x13C00	*static UINT8 mTreeExtraTcpLog; // 0x13C08**
0x13C38	// Event log tracking
0x13AD8	static UINT8 mEventLogTruncated; // 0x13AC0
0x13AE8	// TPM capabilities
0x13A90	static UINT32 mSupportedPcrBankBitMap; // 0x13AAC
0x13AB0	static UINT16 mMaxCapsSize; // 0x139F8
0x13A10	static UINT32 mTpmPcrCount; // 0x13980
TPM2	Protocol & CRB handles
0x13B00	*static void mTrEEProtocol; // 0x13AB8**
0x13C40	static UINT32 mTpmDeviceFlags; // 0x13850
ACPI	update state
0x13AC8	*static void mAcpiProtocol; // 0x13B58**
0x13BF0	*static void mResetNotification; // 0x13C30**
0x13C28	// Internal state
0x13AA8	static UINT64 mImageContextHandle; // 0x13AE0
0x13B90	static UINT32 mSecureBootSetup; // 0x19B0
0x19B1	static UINT32 mDefaultProvision; // 0x19B2
Debug	Print (sub_9C8C)
AMD	platform debug output via IO port 0x70/0x71 (CMOS).
Checks	CMOS index 0x4B bit for debug level.
Tcg2GetSpecVersion	(sub_9B4)
Returns	byte at offset 6 from TPM2 protocol structure.
MorCheckAndClear	(sub_D00)
Reads	MemoryOverwriteRequestControl variable. If MOR bit is set
performs	memory clear and reports.
TreeGetCapability	(sub_1928)
Fills	EFI_TCG2_PROTOCOL capabilities structure.
TreeSetActivePcrs	(sub_1820)
Sets	active PCR banks. Validates against supported banks.
Persists	via AMITCGPPIVAR2 UEFI variable.
TreeGetResultOfSetActivePcrs	(sub_1728)
Checks	result of a prior SetActivePcrs via AMITCGPPIVAR variable.
TreeGetEventLog	(sub_1EEC)
Returns	event log location, last entry pointer, and truncated flag.
Checks	TCG2 spec version and returns appropriate log.
TC	log format
SHA1	log available
Tpm20DxeAcpiUpdate	(sub_7DA4)
Registered	as a notification callback.
Locates	DSDT, updates TPM device ASL objects.
TpmServFlagsLockCallback	(sub_7B88)
Called	when gEdkiiVariableLockProtocolGuid is available.
Locks	the TpmServFlags variable.
CopyTcgLog	(sub_411C)
Copies	the TCG event log from the PEI HOB into the allocated
DXE	event log buffer.
Set	structure version
InstallTrEEProtocol	(sub_7ED8)
Allocates	event log buffers, installs TCG2 config table
and	registers the TrEE (TCG2) protocol.
TrEEUpdateTpmDeviceASL	(sub_4324)
Updates	ACPI DSDT with TPM device ASL objects
LibGetDsdt	(sub_FEAC)
Locate	DSDT table in ACPI tables.
Searches	RSDT/XSDT to find DSDT address.
Search	through ACPI tables
DriverInit	(sub_420)
Standard	UEFI driver init. Saves image handle, system table
boot	services, runtime services. Calls DxeServicesTableLib init
and	performs delay calibration via PIT.
Init	DxeServicesTable
Calibrate	delay via PIT (8253 timer)
Initialize	DXE services table pointer
TreeDxeEntry	(sub_8238) - Main Driver Entry
Return	EFI_SUCCESS
Phase	1: Locate TPM2 device protocol
Phase	2: Allocate ACPI buffer
Phase	3: Register ACPI update event
Phase	4: Read TpmServFlags via RT->GetVariable
Phase	5: Lock TpmServFlags
Register	callback for when lock protocol appears
Phase	6: Check TPM presence
Phase	7: Install protocols
Phase	8: Update ACPI tables
Phase	9: Set TPM2 device active PCR banks
StructureVersion	TpmDeviceCaps[12] = 0; // ProtocolSpecVersion
SupportedEventLogs	((VOID ()(VOID , UINT8))Tpm2Handle)[32] (TpmDeviceCaps, TRUE);*
ModuleEntryPoint	(0x3F4)
SecureBootSetupCheck	(sub_43C)
Reads	SecureBootSetup and SetupMode variables to determine
secure	boot state. Called before main entry during init.
End	of Tcg2Dxe.c	all functions renamed and documented
Address	range summary:
0x3F4	_ModuleEntryPoint
0x420	DriverInit (sub_420)
0x43C	SecureBootSetupCheck (sub_43C)
0x610	Tpm2SequenceComplete (SM3 variant)
0x748	HashMultiAlg (combines all algorithm hashes)
0xD70	Tpm2QueryPcrBanks
0x1100	Tpm2AllocatePCR
0x1928	TreeGetCapability
0x22FC	InternalTcg20CommonExtend (TPM2 extend command)
0x2728	TpmHashLogExtendEvent
0x3414	TreeHashLogExtendEvent
0x4D50	TreeProcessDbVariable
0x4F3C	TreeHashImageExtend
0x5AC0	HashAllAlgorithms
0x5C88	HashUpdateAll
0x5EDC	HashBuffer
0x620C	HashMultiAlgFull
0x711C	TreeMeasurePeImage
0x7CA0	ReadTpmServFlags (with retry)
0x8238	TreeDxeEntry (main driver entry)
0x91EC	CopyDigestToOutput
0x92D0	WalkNextEventLogEntry
0x9504	GetLastEventLogEntry
0x9564	(walk helper for event log)
0x9750	Tpm2InitCommand
0x983C	Tpm2SequenceUpdate
0x9A00	Tpm2SequenceComplete
0x9C8C	DebugPrint (CMOS debug output)
0x9D14	DebugAssert
0x9D54	DebugEnabled (stub returning 1)
0x9D58	DebugLevelCheck (stub returning a1 != 0)
0x9D60	CopyMem
0xA3C	Tpm2IsCrbPresent
0xA9DC	Sha256BlockProcess (SHA256 transform)
0xBC6C	Sha1Finalize
0xBD94	Sha1BlockProcess (SHA1 transform)
0xE384	Sha256Update
0xE454	Sha256Finalize
0xE5DC	Sha384Init
0xE660	Sha512Finalize
0xE6A8	Sha512BlockProcess (SHA512 transform)
0xEC80	Sha512Update
0xED58	Sha512FinalCustom
0xEE80	Tpm2CopySwap (byte-swap copy)
0x101A4	AcpiUpdateAmlTable
0x10750	GetImageContext (PE/COFF header parsing)
0x10ADC	EventLogTimer
0x10B10	EventLogTimerWithData
0x10BF0	GetPpiServices

Generated by HR650X BIOS Decompilation Project