IioCfgUpdateDxeLightningRidgeEXECB1

Function Table

Address	Name	Description
	ReturnNotFound
	DebugPrint
	DebugAssert
	IsHobListGuid
	ReadUnaligned64
	RegisterIioConfig
	_ModuleEntryPoint
Module	Globals
Cached	debug protocol interface (initialized on first use).
VOID	*gDebugProtocol = NULL;
Cached	HOB list pointer (initialized on first use).
VOID	*gHobList = NULL;
GUID	Definitions (instances)
EFI_HOB_LIST_GUID	instance - used to locate HOB list in configuration table.
EFI_GUID	gEfiHobListGuid = EFI_HOB_LIST_GUID;
UBA	Board-Type Protocol GUID - interface to register configuration data.
EFI_GUID	gUbaBoardTypeProtocolGuid = UBA_BOARD_TYPE_PROTOCOL_GUID;
UBA	IIO Config Update protocol GUIDs (one per CPU socket).
static	EFI_GUID gIioCfgUpdateProtocolGuid[IIO_CFG_UPDATE_PROTOCOL_COUNT] = {
UBA	Debug Protocol GUID - protocol for debug output.
EFI_GUID	gUbaDebugProtocolGuid = UBA_DEBUG_PROTOCOL_GUID;
IIO	Configuration Table
UBA_IIO_CFG_UPDATE_PROTOCOL	- The IIO configuration protocol structure
that	is registered for each CPU socket on this platform.
This	structure describes the IIO configuration table layout:
STATIC	CONST UBA_IIO_CFG_UPDATE_PROTOCOL mIioCfgProtocol = {
IIO	configuration table for LightningRidgeEXECB1.
This	table contains 21 entries of 12 bytes each (252 bytes total)
with	the remaining space (0x50C - 252 = 1040 bytes) being padding/reserved.
Each	entry configures an IIO register/port for a specific socket function.
Entry	format (UBA_IIO_CFG_UPDATE_TABLE_ENTRY):
Byte	0: Type (function/register selector)
Byte	1: SubType (sub-function or qualifier)
Bytes	2-3: Reserved
Bytes	4-7: Reserved
Byte	8: Value (target data)
Byte	9: Port (target port/address)
Bytes	10-11: Reserved
The	0xFF bytes in the reserved fields indicate "don't care" / unchecked.
The	board config protocol performs the actual IIO register programming
based	on these entries.
STATIC	CONST UINT8 mIioCfgTable[0x50C] = {
Static	Data: UBA Board Config Table
UBA	board configuration lookup table at offset 0xD60.
This	small table provides a mapping between UBA protocol indices and
board	configuration data. Format is 12 bytes per entry.
For	LightningRidgeEXECB1, this table contains 20 entries mapping
STATIC	CONST UINT8 mUbaBoardConfigTable[] = {
Function	Implementations
Check	cache first
Raise	TPL to TPL_HIGH_LEVEL (31) for critical section
Check	if HOB allocation size indicates a multi-package platform
Restore	TPL and return NULL - protocol not available on this platform
Locate	the UBA Debug protocol
Restore	TPL
Get	the DebugLib protocol interface
Read	CMOS register 0x4B to get board type
Port	0x70 = index, port 0x71 = data
Determine	the board type value
When	CMOS byte is 0, read from MMIO register and derive board type
Board	type 0 is reserved/invalid (subtract 1 to get index)
Valid	board types are 1, 2, 3 -> indices 0, 1, 2
Determine	debug mask based on board type index
Check	if the requested error level is enabled by the board's debug mask
Call	the DebugLib protocol's output function (offset 0x08)
Call	the DebugLib protocol's assert handler (offset 0x08)
The	assert handler takes (FileName, LineNumber, Description)
Read	the target GUID as two 64-bit values
Compare	against EFI_HOB_LIST_GUID (7739F24C-93D7-11D4-9A3A-0090273FC14D)
First	8 bytes: 0xD411D7934CF23977 (little-endian: 7739F24C-93D7-11D4)
Second	8 bytes: 0x4DC13F2790003A9A (little-endian: 9A3A-0090273FC14D)
Trigger	debug assertion via DebugLib
Read	8 bytes from potentially unaligned address
Check	if already cached
Initialize	to NULL
Linear	scan through configuration table entries
Found	the HOB list
If	HOB list was not found, trigger assertion
Print	debug banner identifying this module
Locate	the UBA board-type protocol
Register	IIO configuration protocol for each CPU socket
Step	1: Cache UEFI global variables
These	are set by the UefiBootServicesTableLib and
UefiRuntimeServicesTableLib	libraries at image startup.
The	asserts below validate the pointers are non-NULL.
Step	2: Locate the HOB list
The	HOB list is needed by GetDebugProtocol() to check the HOB
allocation	size before deciding whether to locate the debug protocol.
Step	3: Register IIO configuration protocols

Generated by HR650X BIOS Decompilation Project