BootScriptExecutorDxe

Function Table

Address	Name	Description
	ModuleEntryPoint
	DriverInit
	BootScriptDriverInit
	BootScriptExecuteTable
	UefiBootServicesTableLibConstructor
	SmmLockBoxSaveLockBox
	SmmLockBoxRestoreLockBox
	SmmLockBoxSetAttributes
	X64ExceptionDumpCpuContext
	BaseLibGetPerformanceCounter
Global	variables
Data	section variables
UINT64	*gUnknownData_0xC850; / 0xC850* /**
VOID	gEfiBootScriptNotifyProtocol; / 0xC710 */
Module	Entry Point
Driver	Init - Serial port init and boot script setup
Store	global pointers
Read	CMOS/RTC to detect serial baud rate
CMOS	index 0x5C stores the UART baud rate index:
0xA7	-> 115200, 0xA6 -> 57600, 0xA5 -> 38400
0xA4	-> 19200, 0xA3 -> 9600
IoWrite8	(RTC_ADDR_PORT, 0x5C);
Configure	16550 UART at detected base address
UART	base is determined from CMOS (typically 0x3F8 for COM1)
UINT16	*UartBase = 1016; / 0x3F8* /**
Detect	current UART configuration
Set	DLAB bit to access divisor latches
Only	reconfigure if baud rate doesn't match
Wait	for UART idle (TSR empty)
Set	DLAB, write divisor, clear DLAB, set 8N1
Allocate	boot script table
PCD	check: enable watchdog if appropriate
Check	CR0 (cache settings)
Performance	counter delay loop
Restore	cache state
Call	main boot script driver init
Boot	Script Driver Init (from PiDxeS3BootScriptLib/BootScriptSave.c)
the	boot script notification protocols.
Allocate	S3 boot script context
Allocate	S3 boot script table via boot services
Register	with BS function table
Create	DxeSmmReadyToLock event
Check	if BootScript Notify protocol is available
If	so, register S3 ready event and close done callbacks
Allocate	second context
Allocate	from S3 boot script protocol
Register	boot script close callbacks
Register	S3 ready callback
Boot	Script Table Entry Execution
S3BootScriptExecuteTable	- Main entry for executing the boot script table
Parses	each entry by opcode and dispatches to the appropriate handler.
Called	during S3 resume.
UINT64	BootScriptExecuteTable (
This	is the core function at 0x4C94
It	iterates through the boot script table entries, parsing the
common	header (opcode, width, size) and dispatching to:
For	the full decompiled pseudocode, see the IDB at:
BootScriptExecuteTable	@ 0x4C94
UefiBootServicesTableLibConstructor	@ 0x1B9C
Constructor	for the UEFI Boot Services Table Library.
Stores	pointer to function table.
UINT64	UefiBootServicesTableLibConstructor (
Returns	the gBS function table pointer
SmmLockBoxSaveLockBox	@ 0x21A4
Saves	a buffer to a LockBox identified by GUID.
Uses	SMM communication buffer protocol.
UINT64	SmmLockBoxSaveLockBox (
Get	SMM communication buffer
Build	SMM LockBox save request
Send	to SMM via communication buffer
Return	status
SmmLockBoxRestoreLockBox	@ 0x2414
Restores	a buffer from a LockBox identified by GUID.
Allocates	boot services buffer for the restored data.
UINT64	SmmLockBoxRestoreLockBox (
Build	LockBox restore request with SMM comm buffer
Buffer	layout:
Call	SMM communication protocol
Return	restored data status
SmmLockBoxSetAttributes	@ 0x22E8
Sets	attributes on an existing LockBox.
Currently	only supports EFI_LOCK_BOX_ATTRIBUTE_RESTORE_IN_PLACE (bit 0).
UINT64	SmmLockBoxSetAttributes (
Build	SMM request with Attributes=4 (SetAttributes)
GUID	is embedded in the request buffer
X64ExceptionDumpCpuContext	@ 0x6D30
Dumps	full CPU context for an X64 exception.
Called	by the exception handler to print register state.
UINT64	X64ExceptionDumpCpuContext (
Exception	has data (page fault, etc.)
Page	fault
Dump	all general purpose and system registers
BaseLibGetPerformanceCounter	@ 0x19F4
Reads	the current performance counter value.
Uses	the TSC (Time Stamp Counter).
UINT64	BaseLibGetPerformanceCounter (
CopyMem	@ 0x72EC
Copies	memory from source to destination.
VOID	*
Delegates	to CopyMemInternal at 0x9C0
SetMem	@ 0x7388
Fills	memory with a byte value.
Delegates	to SetMemInternal at 0xA10

Generated by HR650X BIOS Decompilation Project