AmiRedFishApi

Function Table

Address	Name	Description
	AmiRedfishReadUnaligned64
	AmiRedfishWriteUnaligned64
	AmiRedfishDebugPrint
	AmiRedfishAssert
	AmiRedfishFreePool
	AmiRedfishGetDebugLevel
	AmiRedfishInitHobList
	AmiRedfishGetSecureBootMode
	AmiRedfishGetSecureBoot
	AmiRedfishSetSecureBootSetup
	AmiRedfishSetVariable
	AmiRedfishProcessPK
	AmiRedfishGetRawImage
	AmiRedfishProcessAllVariables
	AmiRedfishEntryPoint
GUID	definitions
Global	data
Protocol	handle GUID array used for InstallMultipleProtocolInterfaces.
The	value 17039617 (0x01040001) may encode version/attributes info.
STATIC	CONST UINT32 mAmiRedfishProtocolVersion = 17039617;
Table	of Secure Boot variable names (dbx, dbt, dbr, db).
STATIC	*CONST CHAR16 mSecureBootVarNames[] = {**
Table	of default value variable names (dbxDefault, dbtDefault, ...).
STATIC	*CONST CHAR16 mSecureBootDefaultNames[] = {**
Table	of image GUIDs associated with each Secure Boot variable.
STATIC	*EFI_GUID mSecureBootImageGuids[] = {**
Default	variable GUID for Secure Boot variables.
STATIC	EFI_GUID mSecureBootDefaultGuid = AMI_SECUREBOOT_DEFAULT_GUID;
Cached	HOB list pointer.
STATIC	*VOID mHobList = NULL;**
Cached	debug/report protocol pointer.
STATIC	*VOID mDebugProtocol = NULL;**
Internal	helper functions
Allocate	report status code protocol buffer.
Interface	= AllocateZeroPool (0x10);
Locate	the protocol via gBS->LocateProtocol.
Status	= gBS->LocateProtocol (
reuse	as debug protocol GUID
offset	to protocol API
Call	debug protocol's output function at offset 0.
Call	debug protocol assertion handler at offset 8.
Read	CMOS index 0x70 to preserve NMI bit, then select index 0x4B.
Index	= IoRead8 (0x70);
Retrieve	the HOB list from the system table configuration table array.
if	(gST->NumberOfTableEntries > 0) {
Walk	HOBs to find the gEfiHobMemoryAllocModuleGuid entry.
The	specific GUID used here is the AmiRedfishHobGuid which matches
an	AMI-specific HOB entry containing Redfish configuration data.
Secure	Boot mode detection
First	query the variable to determine its current size/attributes.
Status	= gRT->GetVariable (
Variable	management
Validate	parameters.
if	**(VarName == NULL		VarGuid == NULL) {**
Validate	data buffer requirements.
if	((Flags & REDFISH_OP_RUNTIME_ACCESS) != 0) {
Check	if the variable already exists (and if we should skip NV write).
BufferSize	= 0;
Variable	does not exist or exists with a different size.
First	attempt to get the variable from the default storage.
if	**(Status == EFI_BUFFER_TOO_SMALL		Status == EFI_SUCCESS) {**
Variable	exists	skip unless REDFISH_OP_BOOTSERVICE_ACCESS forces write.
if	((Flags & REDFISH_OP_BOOTSERVICE_ACCESS) == 0) {
Variable	not found. Try to read it from the default location
using	gRT->GetVariable with the appropriate time-based attributes.
AmiRedfishInitHobList	(NULL);
Read	the default variable using time-based variable access.
If	the default variable is not found, clear the NV flag and retry.
Write	the runtime variable.
Write	the RT variable with the user-supplied data.
Status	= gRT->SetVariable (
RT	variable name
Write	the non-volatile variable.
if	((Flags & REDFISH_OP_BOOTSERVICE_ACCESS) != 0) {
If	the variable was written successfully, re-read its size for logging.
if	(Status == EFI_SUCCESS) {
if	((Flags & REDFISH_OP_SIZE_CHECK) != 0) {
Raw	image extraction from Firmware Volumes
Get	the Loaded Image Protocol for the current image.
Status	= gBS->HandleProtocol (
Get	the section extraction protocol from the FV handle.
Try	searching all handles for a matching FV section.
Status	= gBS->LocateHandleBuffer (
Check	if this handle's device path matches our FV.
if	(LoadedImage->DeviceHandle == FvHandle) {
Try	to open the section data by the image GUID.
SectionData	= NULL;
Open	FV section with the image GUID using the appropriate
section	extraction protocol interface.
Iterate	over all Secure Boot variables
EFI_GUID	*ImageGuid;
UINTN	ActualSize;
Default	GUID for Secure Boot variables.
DefaultGuid	= &mSecureBootDefaultGuid;
Iterate	over the 4 Secure Boot variables (dbx, dbt, dbr, db).
for	(VarIndex = 0; VarIndex < ARRAY_SIZE (mSecureBootVarNames); VarIndex++) {
Check	whether the variable already exists in NVRAM.
If	the variable exists and we should not overwrite it, skip.
if	(!EFI_ERROR (Status) && (Flags & REDFISH_OP_BOOTSERVICE_ACCESS) == 0) {
Extract	raw image data from the FV for this variable.
Write	the variable.
Status	= AmiRedfishSetVariable (
Free	the section data if it was allocated by the extraction routine.
AmiRedfishFreePool	(Data);
Entry	Point
Cache	global pointers from the System Table.
gImageHandle	= ImageHandle;
Verify	all required global pointers are non-NULL.
ASSERT	(gImageHandle != NULL);
Initialize	the HOB list for this driver.
AmiRedfishInitHobList	(ImageHandle);
Install	the AmiRedfishProtocolGuid onto the image handle.
Status	= gBS->InstallMultipleProtocolInterfaces (

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