StaticSkuDataDxeCLX64L

Function Table

Address	Name	Description
	GetSkuTypeFromCmos
	DebugPrint
	CompareGuidField
	ReadUnaligned64
	StaticSkuDataDxeEntryPoint
Global	Variables
UEFI	handle for this driver image (set by ModuleEntryPoint)
EFI_HANDLE	gImageHandle = NULL;
Pointer	to the UEFI System Table (set by ModuleEntryPoint)
EFI_SYSTEM_TABLE	*gSystemTable = NULL;
Pointer	to the UEFI Boot Services Table (set by ModuleEntryPoint)
EFI_BOOT_SERVICES	*gBootServices = NULL;
Pointer	to the UEFI Runtime Services Table (set by ModuleEntryPoint)
EFI_RUNTIME_SERVICES	*gRuntimeServices = NULL;
Protocol	notification handle for the SKU Data Protocol
VOID	*mSkuDataProtocolNotifyHandle = NULL;
HOB	(Hand-Off Block) list pointer retrieved from SystemTable
VOID	*mHobList = NULL;
ACPI	Method Name Strings for CCT (CPU C-State Control Table) Entries
These	ACPI method names are used by platform AML code to query per-core
The	CLX64L platform provides individual C-state control tables for
each	logical processor grouping.
CONST	*CHAR8 mCctMethodNames[MAX_CCT_ENTRIES] = {**
CPU	C-State Control Table Entry 0
CPU	C-State Control Table Entry 1
CPU	C-State Control Table Entry 2
CPU	C-State Control Table Entry 3
CPU	C-State Control Table Entry 4
CPU	C-State Control Table Entry 5
CPU	C-State Control Table Entry 6
CPU	C-State Control Table Entry 7
CPU	C-State Control Table Entry 8
ACPI	method name for CPU Fan Health monitoring
CONST	*CHAR8 mCfh0MethodName = "SB.CFH0";**
Static	SKU Configuration Data Tables
The	following data occupies the .data section from 0x4060 through ~0xF560
The	exact structure of these tables is generated by the Intel/AMI
SKU	generation tools and is platform-specific to CLX64L.
full	SKU configuration payload. This includes per-SKU entries for
power	management, memory map, PCIe lane configuration, and
thermal	management settings. The data layout follows the Intel
Firmware	Support Package (FSP) SKU data format.
Function	Implementations
Allocate	a small pool buffer (31 bytes) to satisfy LocateProtocol
requirements	on some firmware implementations. Free it immediately
after	the call since we only need the protocol interface pointer.
PoolBuffer	= gBootServices->AllocatePool (31);
Verify	that the allocated pool pointer is valid (at least 16 bytes
of	addressable space). If the allocation was too small or the system
is	in a constrained state, bail out.
if	((UINTN)PoolBuffer <= 0x10) {
Locate	the SKU Data Protocol interface
Status	= gBootServices->LocateProtocol (
Initialize	the SKU type to unknown
SkuType	= SKU_TYPE_UNKNOWN;
Read	CMOS register 0x4B while preserving NMI enable bit
CmosValue	= IoRead8 (0x70);
CCT	(CPU C-State Control Table) version interpretation
if	(CmosValue > 3) {
Valid	CCT version > 3: use the CMOS register value directly
SkuType	= CmosValue;
CCT	version 0 (uninitialized): determine SKU from hardware strap
Read	platform strap at fixed address 0xFDAF0490 (PCH/CPU register)
extract	bit 1 to determine SKU variant.
PlatformFlags	*= (UINT64* )0xFDAF0490;**
Map	the raw CCT value to the platform SKU type:
CCT	== 1 -> SKU type 2 (0x80000004 >> 24)
CCT	== 2 -> SKU type 2 (0x80000006 >> 24, same effective type)
other	-> SKU type 4 (default)
if	((UINT8)(SkuType - 1) <= 0xFD) {
Locate	the debug protocol
DebugProtocol	= LocateSkuDataProtocol ();
Use	the debug protocol's output function (offset +8 from interface)
Debug	*= (EFI_DEBUG_PROTOCOL )DebugProtocol;**
On	first call, locate the HOB list from the System Table
if	(mHobList == NULL) {
The	HOB list pointer is stored at offset +104 from the System Table
mHobList	= NULL;
Walk	the HOB list to find a HOB whose GUID matches
for	(Index = 0; Index < HobCount; Index++) {
Found	the matching HOB, store its GUID-specific field (+16)
mHobList	*= (VOID** )((UINT8 )Hob.Raw + 16);*
If	no matching HOB found, assert and leave mHobList as NULL
Also	compare the second qword (GUID.Data4 field range)
Value1	*= ReadUnaligned64 ((UINT8 )Buffer1 + 8);**
Assert	that the buffer pointer is valid
ASSERT	(Buffer != NULL);
Read	the unaligned 64-bit value directly
The	platform must support unaligned access (x64 does)
return	(UINT64 )Buffer;
Store	ImageHandle globally for later use
gImageHandle	= ImageHandle;
Store	SystemTable pointer globally
gSystemTable	= SystemTable;
Store	Boot Services Table pointer globally
gBootServices	= SystemTable->BootServices;
Store	Runtime Services Table pointer globally
gRuntimeServices	= SystemTable->RuntimeServices;
Initialize	the HOB list cache for SKU data lookup
GetHobList	(NULL);
The	protocol instance data (gSkuDataProtocolInstance) contains the
static	SKU configuration tables for the CLX64L platform.
Register	protocol notify to allow SKU data consumers to connect
Status	= gBootServices->RegisterProtocolNotify (
Install	the full SKU configuration interface
Status	= gBootServices->InstallProtocolInterface (

Generated by HR650X BIOS Decompilation Project