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alder_lake_bios/Intel/AlderLake/AlderLakeChipsetPkg/ChipsetSvcSmm/CsSvcIhisiOemExtraDataCommu...

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/** @file
Implement the Chipset Servcie IHISI OemExtra Data subfunction for this driver.
;***************************************************************************
;* Copyright (c) 2017 - 2021, Insyde Software Corp. All Rights Reserved.
;*
;* You may not reproduce, distribute, publish, display, perform, modify, adapt,
;* transmit, broadcast, present, recite, release, license or otherwise exploit
;* any part of this publication in any form, by any means, without the prior
;* written permission of Insyde Software Corporation.
;*
;******************************************************************************
*/
#include <Uefi.h>
#include <H2OIhisi.h>
#include "BiosGuard.h"
#include <CpuRegs.h>
#include "IndustryStandard/Oa3_0.h"
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/SmmChipsetSvcLib.h>
#include <Library/SmmOemSvcChipsetLib.h>
#include <Library/SmmServicesTableLib.h>
#include <Library/BaseOemSvcKernelLib.h>
#include <Protocol/BiosGuard.h>
#include <Protocol/H2OIhisi.h>
#include <Protocol/SmmFwBlockService.h>
#include <Protocol/SmmVariable.h>
#include <CsSvcIhisiOemExtraDataCommunication.h>
#include <CsSvcIhisiFbts.h>
#include <Register/CommonMsr.h>
#include <Library/MsrFruLib.h>
#include <IndustryStandard/Oa3_0.h>
#include <Library/SmmHeciLib.h>
extern BOOLEAN mFlashME;
extern UINTN mWriteSize;
extern H2O_IHISI_PROTOCOL *mH2OIhisi;
extern EFI_SMM_FW_BLOCK_SERVICE_PROTOCOL *mSmmFwBlockService;
extern BIOSGUARD_PROTOCOL *mBiosGuardProtocol;
extern EFI_PHYSICAL_ADDRESS mBiosGuardMemAddress;
extern UINTN mBiosGuardMemSize;
extern EFI_SMM_VARIABLE_PROTOCOL *mSmmVariable;
static EFI_GUID gMsdmAddressGuid = MEMORY_ADDRESS_FOR_MSDM_GUID;
// These Offset should check BiosGuard Script, which described the Destination Flash Address and DataSize, Please reference GenBiosGuardHdr.h
#define BGSL_DST_TYPE_OFFSET 0x03
#define BGSL_SIZE_OFFSET 0x05
#define BGSL_SPI_DST_ADDR_OFFSET 0x07
/**
TURE -- Platform Pfat/BiosGuard feature enabling
FALSE -- Platform Pfat/BiosGuard feature disabling
**/
BOOLEAN
IsBiosGuardSupport (
VOID
)
{
MSR_PLAT_FRMW_PROT_CTRL_REGISTER PlatFrmwProtCtrl;
if (!MsrIsPfatEnabled()) {
//
// Cpu does not support Pfat/BiosGuard Feature.
//
return FALSE;
}
PlatFrmwProtCtrl.Uint64 = AsmReadMsr64 (MSR_PLAT_FRMW_PROT_CTRL);
if (PlatFrmwProtCtrl.Bits.PfatEnable == 1) {
//
// Pfat/BiosGuard feature enabled.
//
return TRUE;
}
return FALSE;
}
/**
TURE -- Platform FlashWearOut Set
FALSE -- Platform FlashWearOut Un-set
**/
BOOLEAN
IsFlashWearOutSet (
VOID
)
{
UINT64 PlatformBiosInfo;
UINTN DataSize;
EFI_STATUS Status;
DataSize = sizeof (UINT64);
Status = mSmmVariable->SmmGetVariable (
L"BiosInfoFlagData",
&gBiosInfoFlagGuid,
NULL,
&DataSize,
&PlatformBiosInfo
);
if (!EFI_ERROR(Status) && PlatformBiosInfo & BIT0) {
return TRUE;
}
return FALSE;
}
STATIC
BOOLEAN
MsdmExist (
VOID
)
{
EFI_STATUS Status;
UINTN DataSize;
BOOLEAN MsdmExist;
UINTN RomBaseAddress;
EFI_ACPI_MSDM_DATA_STRUCTURE *MsdmData;
UINT8 *VarDataBuffer;
MsdmData = NULL;
MsdmExist = FALSE;
VarDataBuffer = NULL;
if (IsBiosGuardSupport () && IsFlashWearOutSet()) {
DataSize = (UINTN) FixedPcdGet32 (PcdFlashNvStorageMsdmDataSize);
Status = gSmst->SmmAllocatePool (
EfiRuntimeServicesData,
DataSize,
(VOID **)&VarDataBuffer
);
Status = mSmmVariable->SmmGetVariable (
L"MsdmUpdate",
&gMsdmAddressGuid,
NULL,
&DataSize,
VarDataBuffer
);
if (!EFI_ERROR (Status)){
Status = mSmmVariable->SmmSetVariable (
L"MsdmUpdate",
&gMsdmAddressGuid,
EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
0,
NULL
);
}
}
DataSize = sizeof (EFI_ACPI_MSDM_DATA_STRUCTURE);
RomBaseAddress = (UINTN) FixedPcdGet32 (PcdFlashNvStorageMsdmDataBase);
Status = gSmst->SmmAllocatePool (
EfiRuntimeServicesData,
DataSize,
(VOID **)&MsdmData
);
if (EFI_ERROR (Status)) {
goto Done;
}
*(mSmmFwBlockService->FlashMode) = SMM_FW_DEFAULT_MODE;
Status = mSmmFwBlockService->Read (
mSmmFwBlockService,
RomBaseAddress,
0,
&DataSize,
(UINT8*) MsdmData
);
if (EFI_ERROR (Status)) {
goto Done;
}
if ((MsdmData->MsdmVersion == 0xFFFFFFFF) &&
(MsdmData->MdsmDataType == 0xFFFFFFFF) &&
(MsdmData->MsdmDataLength == 0xFFFFFFFF)) {
goto Done;
}
MsdmExist = TRUE;
Done:
if (MsdmData != NULL) {
gSmst->SmmFreePool (MsdmData);
}
return MsdmExist;
}
/**
AH=41h, OEM Extra Data Communication type 50h to read/write OA3.0.
@param[in] ApCommDataBuffer Pointer to AP communication data buffer.
@param[out] BiosCommDataBuffer Pointer to BIOS communication data buffer.
@retval EFI_SUCCESS Read or write OA3.0 successful.
**/
EFI_STATUS
Oa30ReadWriteFunction (
IN AP_COMMUNICATION_DATA_TABLE *ApCommDataBuffer,
OUT BIOS_COMMUNICATION_DATA_TABLE *BiosCommDataBuffer
)
{
UINT32 MsdmDataSize;
MsdmDataSize = sizeof (EFI_ACPI_MSDM_DATA_STRUCTURE);
switch (ApCommDataBuffer->DataSize) {
case OemExtraReportReadSize:
BiosCommDataBuffer->Signature = BIOS_COMMUNICATION_SIGNATURE;
BiosCommDataBuffer->StructureSize = sizeof (BIOS_COMMUNICATION_DATA_TABLE);
BiosCommDataBuffer->BlockSize = OemExtraBlockSize4k;
BiosCommDataBuffer->DataSize = OemExtraReportReadSize;
BiosCommDataBuffer->PhysicalDataSize = MsdmDataSize;
break;
case OemExtraSkipSizeCheck:
BiosCommDataBuffer->Signature = BIOS_COMMUNICATION_SIGNATURE;
BiosCommDataBuffer->StructureSize = sizeof (BIOS_COMMUNICATION_DATA_TABLE);
BiosCommDataBuffer->BlockSize = OemExtraBlockSize4k;
BiosCommDataBuffer->DataSize = OemExtraSkipSizeCheck; //Don't care
BiosCommDataBuffer->PhysicalDataSize = 0x00; //Don't care
break;
case OemExtraReportWriteSize:
BiosCommDataBuffer->Signature = BIOS_COMMUNICATION_SIGNATURE;
BiosCommDataBuffer->StructureSize = sizeof (BIOS_COMMUNICATION_DATA_TABLE);
BiosCommDataBuffer->BlockSize = OemExtraBlockSize4k;
BiosCommDataBuffer->DataSize = OemExtraReportWriteSize;
BiosCommDataBuffer->PhysicalDataSize = MsdmDataSize; //bin size
break;
default:
break;
}
if (!MsdmExist ()) {
BiosCommDataBuffer->ErrorReturn = (BiosCommDataBuffer->ErrorReturn | ERROR_RETURE_OA30_NOT_EXIST);
}
return EFI_SUCCESS;
}
/**
AH=41h, OEM Extra Data Communication type 51h to erase OA3.0 (reset to default).
@param[in] ApCommDataBuffer Pointer to AP communication data buffer.
@param[out] BiosCommDataBuffer Pointer to BIOS communication data buffer.
@retval EFI_SUCCESS Erase OA3.0 successful.
**/
EFI_STATUS
Oa30EraseFunction (
IN AP_COMMUNICATION_DATA_TABLE *ApCommDataBuffer,
OUT BIOS_COMMUNICATION_DATA_TABLE *BiosCommDataBuffer
)
{
EFI_STATUS Status;
EFI_STATUS OemSvcStatus;
UINT8 LoopCount;
UINTN RomBaseAddress;
UINTN EraseSize;
UINT8 Erase;
RomBaseAddress = (UINTN) FixedPcdGet32 (PcdFlashNvStorageMsdmDataBase);
LoopCount = 0;
EraseSize = 0x1000;
Status = EFI_SUCCESS;
if (!MsdmExist ()) {
BiosCommDataBuffer->ErrorReturn = (BiosCommDataBuffer->ErrorReturn | ERROR_RETURE_OA30_NOT_EXIST);
goto Done;
}
if (PcdGetBool (PcdEcSharedFlashSupported)) {
DEBUG_OEM_SVC ((DEBUG_INFO, "OemKernelServices Call: OemSvcEcIdle \n"));
OemSvcStatus = OemSvcEcIdle (TRUE);
DEBUG_OEM_SVC ((DEBUG_INFO, "OemKernelServices OemSvcEcIdle Status: %r\n", OemSvcStatus));
}
Status = EFI_UNSUPPORTED;
if (IsBiosGuardSupport () && IsFlashWearOutSet()) {
Erase = 1;
Status = mSmmVariable->SmmSetVariable (
L"MsdmErase",
&gMsdmAddressGuid,
EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
sizeof(UINT8),
&Erase
);
} else {
*(mSmmFwBlockService->FlashMode) = SMM_FW_DEFAULT_MODE;
while ((EFI_ERROR (Status)) && (LoopCount < 100)) {
Status = mSmmFwBlockService->EraseBlocks (
mSmmFwBlockService,
RomBaseAddress,
&EraseSize
);
LoopCount++;
}
}
if (PcdGetBool (PcdEcSharedFlashSupported)) {
DEBUG_OEM_SVC ((DEBUG_INFO, "OemKernelServices Call: OemSvcEcIdle \n"));
OemSvcStatus = OemSvcEcIdle (FALSE);
DEBUG_OEM_SVC ((DEBUG_INFO, "OemKernelServices OemSvcEcIdle Status: %r\n", OemSvcStatus));
}
Done:
BiosCommDataBuffer->DataSize = ApCommDataBuffer->DataSize;
BiosCommDataBuffer->PhysicalDataSize = ApCommDataBuffer->PhysicalDataSize;
return Status;
}
/**
AH=41h, OEM Extra Data Communication type 52h to populate header.
@param[in] ApCommDataBuffer Pointer to AP communication data buffer.
@param[out] BiosCommDataBuffer Pointer to BIOS communication data buffer.
@retval EFI_SUCCESS populate header successful.
**/
EFI_STATUS
Oa30PopulateHeaderFunction (
IN AP_COMMUNICATION_DATA_TABLE *ApCommDataBuffer,
OUT BIOS_COMMUNICATION_DATA_TABLE *BiosCommDataBuffer
)
{
return EFI_SUCCESS;
}
/**
AH=41h, OEM Extra Data Communication type 53h to de-populate header.
@param[in] ApCommDataBuffer Pointer to AP communication data buffer.
@param[out] BiosCommDataBuffer Pointer to BIOS communication data buffer.
@retval EFI_SUCCESS populate header successful.
**/
EFI_STATUS
Oa30DePopulateHeaderFunction (
IN AP_COMMUNICATION_DATA_TABLE *ApCommDataBuffer,
OUT BIOS_COMMUNICATION_DATA_TABLE *BiosCommDataBuffer
)
{
return EFI_SUCCESS;
}
EFI_STATUS
BiosGuardUpdateHandleFunction (
IN AP_COMMUNICATION_DATA_TABLE *ApCommDataBuffer,
OUT BIOS_COMMUNICATION_DATA_TABLE *BiosCommDataBuffer
)
{
if (IsBiosGuardSupport () == FALSE) {
BiosCommDataBuffer->ErrorReturn = ERROR_RETURE_NOT_SUPPORT;
return EFI_UNSUPPORTED;
}
BiosCommDataBuffer->BlockSize = OemExtraMaximunBlockSize;
BiosCommDataBuffer->DataSize = OemExtraReportWriteSize;
BiosCommDataBuffer->PhysicalDataSize = ApCommDataBuffer->PhysicalDataSize;
return EFI_SUCCESS;
}
EFI_STATUS
BiosGuardReturnHandleFunction (
IN AP_COMMUNICATION_DATA_TABLE *ApCommDataBuffer,
OUT BIOS_COMMUNICATION_DATA_TABLE *BiosCommDataBuffer
)
{
EFI_STATUS Status;
if (IsBiosGuardSupport () == FALSE) {
BiosCommDataBuffer->ErrorReturn = ERROR_RETURE_NOT_SUPPORT;
return EFI_UNSUPPORTED;
}
BiosCommDataBuffer->BlockSize = OemExtraMaximunBlockSize;
BiosCommDataBuffer->DataSize = OemExtraReportWriteSize;
BiosCommDataBuffer->PhysicalDataSize = ApCommDataBuffer->PhysicalDataSize;
BiosCommDataBuffer->ErrorReturn = ERROR_RETURE_RETURN_CODE_VALID;
BiosCommDataBuffer->ReturnCode = AsmReadMsr64 (MSR_PLAT_FRMW_PROT_TRIG_PARAM) &
(LShiftU64 (V_MSR_PLAT_FRMW_PROT_TRIG_PARAM_STATUS_MASK,
N_MSR_PLAT_FRMW_PROT_TRIG_PARAM_STATUS_OFFSET) |
LShiftU64 (V_MSR_PLAT_FRMW_PROT_TRIG_PARAM_DATA_MASK,
N_MSR_PLAT_FRMW_PROT_TRIG_PARAM_DATA_OFFSET));
if (mFlashME) {
if (BiosCommDataBuffer->ReturnCode == 0x0) {
Status = IhisiSuccess;
} else {
Status = FbtsWriteFail;
}
FlashMEAfterProcess(Status);
}
return EFI_SUCCESS;
}
EFI_STATUS
BiosGuardUpdateWrite (
VOID
)
{
EFI_STATUS Status;
UINT32 BgupcSize;
UINT32 BgupcOffset;
UINT32 BufferSize;
EFI_PHYSICAL_ADDRESS BgupCertificate;
UINT8 *InputDataBuffer;
UINT32 DataSize;
UINT32 *BGSL;
UINT32 ROMOffset;
Status = EFI_SUCCESS;
InputDataBuffer = NULL;
BgupcOffset = 0x00;
BgupcSize = 0x00;
BufferSize = 0x00;
BgupCertificate = 0x00;
DataSize = 0x00;
BGSL = NULL;
ROMOffset = 0x00;
if (IsBiosGuardSupport () == FALSE){
return EFI_UNSUPPORTED;
}
InputDataBuffer = (UINT8*) (UINTN) mH2OIhisi->ReadCpuReg32 (EFI_SMM_SAVE_STATE_REGISTER_RSI);
BgupcOffset = sizeof (BGUP_HEADER) + ((BGUP *) InputDataBuffer)->BgupHeader.ScriptSectionSize + ((BGUP *) InputDataBuffer)->BgupHeader.DataSectionSize;
BufferSize = mH2OIhisi->ReadCpuReg32 (EFI_SMM_SAVE_STATE_REGISTER_RDI);
BgupCertificate = (EFI_PHYSICAL_ADDRESS) (mBiosGuardMemAddress + mBiosGuardMemSize - BGUPC_MEMORY_OFFSET);
if (!mH2OIhisi->BufferInCmdBuffer ((VOID *) InputDataBuffer, BufferSize)) {
return EFI_INVALID_PARAMETER;
}
switch (((BGUPC_HEADER *)(InputDataBuffer + BgupcOffset))->Algorithm) {
case 1:
BgupcSize = sizeof (BGUPC_ALGORITHM_1);
break;
default:
BgupcSize = sizeof (BGUPC_ALGORITHM_1);
break;
}
if ((BgupcOffset + BgupcSize) != BufferSize) {
return EFI_INVALID_PARAMETER;
}
ZeroMem ((VOID *)(UINT64) mBiosGuardMemAddress, mBiosGuardMemSize);
CopyMem ((VOID *)(UINT64) mBiosGuardMemAddress, InputDataBuffer, BgupcOffset);
CopyMem ((VOID *) BgupCertificate, InputDataBuffer + BgupcOffset, BgupcSize);
if (!mFlashME){
DataSize = ((BGUP_HEADER*)mBiosGuardMemAddress)->ScriptSectionSize;
Status = gSmst->SmmAllocatePool (
EfiRuntimeServicesData,
DataSize,
(VOID **)&BGSL
);
if (!EFI_ERROR (Status )) {
CopyMem (BGSL, (VOID *)(mBiosGuardMemAddress + sizeof(BGUP_HEADER)), DataSize);
//
// 0x00000000 means Full image
// 0xFFFFFFFF means only BIOS
//
if ((BGSL[BGSL_DST_TYPE_OFFSET]) == 0x00000000) {
mWriteSize = BGSL[BGSL_SIZE_OFFSET];
ROMOffset = BGSL[BGSL_SPI_DST_ADDR_OFFSET];
CheckInMERange (ROMOffset);
}
gSmst->SmmFreePool (BGSL);
}
}
if (mFlashME){
SetMeHalt ();
}
//
// Use Intel BIOS Guard protocol to trigger BIOS Guard ACM
//
// Status = gSmst->SmmIo.Io.Write (&gSmst->SmmIo, SMM_IO_UINT8, mGlobalNvsArea->BiosGuardIoTrapAddress, 1, &Trigger);
mBiosGuardProtocol->Execute (mBiosGuardProtocol, TRUE);
return Status;
}
/**
Function to write OA3.0 data and do action which request from IHISI function 42h.
@retval EFI_SUCCESS Successfully returns.
**/
EFI_STATUS
Oa30DataWrite (
VOID
)
{
EFI_STATUS Status;
EFI_STATUS OemSvcStatus;
UINT32 WriteSize;
UINT8 EraseCount;
UINT8 WriteCount;
UINT8 ShutdownMode;
UINT32 MsdmDataSize;
UINTN RomBaseAddress;
UINT8 *WriteDataBuffer;
UINT8 *ReturnDataBuffer;
UINTN Index2;
UINTN EraseSize;
UINT8 *TEMP;
WriteDataBuffer = (UINT8 *) (UINTN) mH2OIhisi->ReadCpuReg32(EFI_SMM_SAVE_STATE_REGISTER_RSI);
WriteSize = (UINT32) mH2OIhisi->ReadCpuReg32 (EFI_SMM_SAVE_STATE_REGISTER_RDI);
RomBaseAddress = (UINTN) FixedPcdGet32 (PcdFlashNvStorageMsdmDataBase);
MsdmDataSize = sizeof (EFI_ACPI_MSDM_DATA_STRUCTURE);
if (WriteSize == MsdmDataSize) {
EraseSize = (UINTN) FixedPcdGet32 (PcdFlashNvStorageMsdmDataSize);
ReturnDataBuffer = NULL;
Status = gSmst->SmmAllocatePool (
EfiRuntimeServicesData,
EraseSize,
(VOID **)&ReturnDataBuffer
);
if (EFI_ERROR (Status)) {
return EFI_OUT_OF_RESOURCES;
}
*(mSmmFwBlockService->FlashMode) = SMM_FW_DEFAULT_MODE;
Status = mSmmFwBlockService->Read (
mSmmFwBlockService,
RomBaseAddress,
0,
&EraseSize,
ReturnDataBuffer
);
//
// Only modify the first 0x31 bytes
//
TEMP = ReturnDataBuffer;
for (Index2 = 0; Index2 < MsdmDataSize; Index2++) {
TEMP[Index2] = WriteDataBuffer[Index2];
}
Status = EFI_UNSUPPORTED;
if (PcdGetBool (PcdEcSharedFlashSupported)) {
DEBUG_OEM_SVC ((DEBUG_INFO, "OemKernelServices Call: OemSvcEcIdle \n"));
OemSvcStatus = OemSvcEcIdle (TRUE);
DEBUG_OEM_SVC ((DEBUG_INFO, "OemKernelServices OemSvcEcIdle Status: %r\n", OemSvcStatus));
}
if (IsBiosGuardSupport () && IsFlashWearOutSet()) {
Status = mSmmVariable->SmmSetVariable (
L"MsdmUpdate",
&gMsdmAddressGuid,
EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
MsdmDataSize,
ReturnDataBuffer
);
} else {
EraseCount = 0;
WriteCount = 0;
do {
Status = mSmmFwBlockService->EraseBlocks (
mSmmFwBlockService,
RomBaseAddress,
&EraseSize
);
if (!EFI_ERROR (Status)) {
EraseCount = 0;
Status = mSmmFwBlockService->Write (
mSmmFwBlockService,
RomBaseAddress,
&EraseSize,
ReturnDataBuffer
);
if (!EFI_ERROR (Status)) {
goto WriteDone;
} else {
Status = IHISI_FBTS_WRITE_FAILED;
WriteCount++;
}
} else {
Status = IHISI_FBTS_ERASE_FAILED;
EraseCount++;
}
} while ((EraseCount < 100) && (WriteCount < 100));
}
WriteDone:
gSmst->SmmFreePool (ReturnDataBuffer);
if (PcdGetBool (PcdEcSharedFlashSupported)) {
DEBUG_OEM_SVC ((DEBUG_INFO, "OemKernelServices Call: OemSvcEcIdle \n"));
OemSvcStatus = OemSvcEcIdle (FALSE);
DEBUG_OEM_SVC ((DEBUG_INFO, "OemKernelServices OemSvcEcIdle Status: %r\n", OemSvcStatus));
}
if (EFI_ERROR(Status)){
return EFI_ACCESS_DENIED;
}
} else {
return EFI_INVALID_PARAMETER;
}
ShutdownMode = (UINT8) mH2OIhisi->ReadCpuReg32 (EFI_SMM_SAVE_STATE_REGISTER_RCX);
switch (ShutdownMode) {
case DoNothing:
Status = EFI_SUCCESS;
break;
case WindowsReboot:
Status = EFI_SUCCESS;
break;
case WindowsShutdown:
Status = EFI_SUCCESS;
break;
case DosReboot:
//
// Note: Reboot by Oem hook
//
Status = IhisiFbtsReboot ();
break;
case DosShutdown:
Status = IhisiFbtsShutDown ();
break;
default:
Status = EFI_UNSUPPORTED;
break;
}
return EFI_SUCCESS;
}
/**
AH=41h(OemExtraDataCommunication),
This function offers an interface to do IHISI Sub function AH=41h.
@param[in] ApCommDataBuffer Pointer to AP communication data buffer.
@param[in, out] BiosCommDataBuffer On entry, pointer to BIOS communication data buffer.
On exit, points to updated BIOS communication data buffer.
@retval EFI_UNSUPPORTED Returns unsupported by default.
@retval EFI_MEDIA_CHANGED Alter the Configuration Parameter or hook code.
@retval EFI_SUCCESS The function performs the same operation as caller.
The caller will skip the specified behavior and assuming
that it has been handled completely by this function.
*/
EFI_STATUS
EFIAPI
IhisiOemExtCommunication (
IN AP_COMMUNICATION_DATA_TABLE *ApCommDataBuffer,
IN OUT BIOS_COMMUNICATION_DATA_TABLE *BiosCommDataBuffer
)
{
EFI_STATUS Status;
switch (ApCommDataBuffer->DataType) {
case Oa30ReadWrite:
Status = Oa30ReadWriteFunction (ApCommDataBuffer, BiosCommDataBuffer);
break;
case Oa30Erase:
Status = Oa30EraseFunction (ApCommDataBuffer, BiosCommDataBuffer);
break;
case Oa30PopulateHeader:
Status = Oa30PopulateHeaderFunction (ApCommDataBuffer, BiosCommDataBuffer);
break;
case Oa30DePopulateHeader:
Status = Oa30DePopulateHeaderFunction (ApCommDataBuffer, BiosCommDataBuffer);
break;
case PfatUpdate:
Status = BiosGuardUpdateHandleFunction (ApCommDataBuffer, BiosCommDataBuffer);
break;
case PfatReturn:
Status = BiosGuardReturnHandleFunction (ApCommDataBuffer, BiosCommDataBuffer);
break;
default:
Status = EFI_UNSUPPORTED; //Return unsupported to indicate this is reserved function
break;
}
if (EFI_ERROR (Status)) {
return EFI_UNSUPPORTED;
} else {
CopyMem (ApCommDataBuffer, BiosCommDataBuffer, sizeof (BIOS_COMMUNICATION_DATA_TABLE));
return EFI_SUCCESS;
}
}
/**
AH=42h(OemExtraDataWrite)
This function offers an interface to do IHISI Sub function AH=42h,
@param[in] FunctionType Function type.
@param[in, out] WriteDataBuffer Pointer to input file data buffer.
@param[in, out] WriteSize Write size.
@param[in, out] RomBaseAddress Target offset to write.
@param[in] ShutdownMode Shutdown mode.
@retval EFI_UNSUPPORTED Returns unsupported by default.
@retval EFI_MEDIA_CHANGED Alter the Configuration Parameter or hook code.
@retval EFI_SUCCESS The function performs the same operation as caller.
The caller will skip the specified behavior and assuming
that it has been handled completely by this function.
*/
EFI_STATUS
EFIAPI
IhisiOemExtDataWrite (
IN UINT8 FunctionType,
IN OUT UINT8 *WriteDataBuffer,
IN OUT UINTN *WriteSize,
IN OUT UINTN *RomBaseAddress,
IN UINT8 ShutdownMode
)
{
EFI_STATUS Status;
Status = EFI_UNSUPPORTED;
switch (FunctionType) {
case Oa30ReadWrite:
Status = Oa30DataWrite ();
break;
case PfatUpdate:
FunctionType = 0x00;
Status = BiosGuardUpdateWrite ();
break;
default:
Status = EFI_UNSUPPORTED;
break;
}
return Status;
}
/**
AH=47h(OemExtraDataRead),
This function offers an interface to do IHISI Sub function AH=47h,
@param[in] FunctionType Function type
@param[in, out] DataBuffer Pointer to return data buffer.
@param[in, out] Size Read size.
@param[in, out] RomBaseAddress Read address.
@retval EFI_UNSUPPORTED Returns unsupported by default.
@retval EFI_MEDIA_CHANGED Alter the Configuration Parameter or hook code.
@retval EFI_SUCCESS The function performs the same operation as caller.
The caller will skip the specified behavior and assuming
that it has been handled completely by this function.
*/
EFI_STATUS
EFIAPI
IhisiOemExtDataRead (
IN UINT8 FunctionType,
IN OUT UINT8 *DataBuffer,
IN OUT UINTN *Size,
IN OUT UINTN *RomBaseAddress
)
{
return EFI_UNSUPPORTED;
}
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