UsbOcUpdateDxeLightningRidgeEXECB3

Function Table

Address	Name	Description
	ReadUnaligned64
	IsUbaPlatformHob
	GetUsbOcConfigPointers
	RegisterUsbOcData
	UsbOcUpdateEntryPoint
Global	UEFI table pointers (filled in by entry point)
EFI_HANDLE	gImageHandle = NULL;
Cached	HOB list pointer
VOID	*gHobList = NULL;
Cached	UBA Configuration Database protocol pointer
UBA_CONFIG_DATABASE_PROTOCOL	*gUbaConfigDb = NULL;
UBA	configuration database protocol GUID
EFI_GUID	mUbaConfigDatabaseProtocolGuid = USB_OC_UBA_PROTOCOL_GUID;
Parameter	GUID for USB OC configuration
EFI_GUID	mUsbOcConfigGuid = USB_OC_PARAM_GUID;
HOB	GUID for locating UBA platform data
EFI_GUID	mUbaPlatformHobGuid = USB_OC_HOB_GUID;
PUSB	table metadata
Combined	UBA OC configuration data structure containing all mapping tables.
UBA_OC_CONFIG_DATA	mUsbOcConfigData = {
USB	port numbers	logical index to physical port number mapping.
0	= unused/unavailable port slot.
OC	channel index per physical port.
8	= no overcurrent channel (port not physically connected or no OC).
PUSB	table header
OC	data mapping entries.
All	entries identical: 0x01020007 encodes channel and attribute info.
Read	the 64-bit value as two 32-bit halves to handle unaligned access.
The	UEFI specification guarantees this is safe.
return	(CONST UINT64 )Buffer;
Compare	the GUID as two 64-bit halves for efficiency.
GuidFirstHalf	= ReadUnaligned64 (HobGuid);
Check	for cached HOB list pointer
if	(gHobList != NULL) {
Find	the first GUID HOB that matches the UBA platform GUID.
GuidHob	= GetFirstGuidHob (&mUbaPlatformHobGuid);
Cache	and return pointer to the HOB data portion (immediately after the GUID)
gHobList	*= (VOID )(GuidHob + 1);**
UBA	platform HOB not found	error condition
DEBUG	((DEBUG_ERROR, "\nASSERT_EFI_ERROR (Status = %r)\n", EFI_NOT_FOUND));
Return	cached pointer if already resolved
if	(gUbaConfigDb != NULL) {
Locate	the UBA Configuration Database protocol
Status	= gBootServices->LocateProtocol (
Board	type identification via port topology
Combined	OC config including PUSB header
Register	the OC configuration data with the UBA protocol.
The	protocol call uses:
Status	= UbaConfigDb->SetData (
Validate	parameters
if	(ImageHandle == NULL) {
Initialize	global table pointers
gImageHandle	= ImageHandle;
Initialize	HOB subsystem
GetUbaPlatformHob	();
Log	the UBA configuration being applied
DEBUG	((EFI_D_INFO, "UBA:UsbOcUpdate-TypeLightningRidgeEXECB3\n"));
UbaConfigDb	= GetUbaConfigDb ();
Register	the USB OC mapping configuration
Status	= RegisterUsbOcData (UbaConfigDb);

Generated by HR650X BIOS Decompilation Project