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//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
//**********************************************************************
// $Header: /Alaska/SOURCE/Modules/TCG2/Common/TpmClearOnRollback/TpmClearOnRollback.c 1 4/21/14 2:18p Fredericko $
//
// $Revision: 1 $
//
// $Date: 4/21/14 2:18p $
//**********************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Modules/TCG2/Common/TpmClearOnRollback/TpmClearOnRollback.c $
//
// 1 4/21/14 2:18p Fredericko
//
// 1 10/08/13 12:06p Fredericko
// Initial Check-In for Tpm-Next module
//
// 1 7/10/13 5:57p Fredericko
// [TAG] EIP120969
// [Category] New Feature
// [Description] TCG (TPM20)
//**********************************************************************
//<AMI_FHDR_START>
//---------------------------------------------------------------------------
// Name: TpmClearOnRollback
//
//
//
//---------------------------------------------------------------------------
//<AMI_FHDR_END>
#include "TpmClearOnRollback.h"
#include <Protocol/AmiPostMgr.h>
#include <PPI/FwVersion.h>
#include <Hob.h>
#include <Token.h>
#include <AmiHobs.h>
VOID DrawMessageBox(
IN CHAR16 *Caption,
IN CHAR16 *Message
);
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: RecoveryClearTpmBeforeFlash
//
// Description:
// Process TPM clear on Rollback policy
//
// Input:
// VOID
//
// Output:
// VOID
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
VOID RecoveryClearTpmBeforeFlash (VOID){
UINT8 ClearResults;
AMI_POST_MANAGER_PROTOCOL *TpmClearAmiPostMgr = NULL;
FW_VERSION Fid;
EFI_EVENT MyEvent;
FW_VERSION RecoveryFid;
EFI_HOB_HANDOFF_INFO_TABLE *TpmpHit;
EFI_GUID myGuidHob = HOB_LIST_GUID;
EFI_GUID TpmRecoveryHobGuid = AMI_RECOVERY_IMAGE_HOB_GUID;
UINT32 ProjectVersion, NewProjectVersion;
EFI_GUID gAmiPostManagerProtocolGuid = \
AMI_POST_MANAGER_PROTOCOL_GUID;
EFI_STATUS Status;
TpmpHit = GetEfiConfigurationTable(pST, &myGuidHob);
if(TpmpHit != NULL && !EFI_ERROR(FindNextHobByGuid(&TpmRecoveryHobGuid, &TpmpHit))) {
TpmGetFidFromBuffer(&RecoveryFid, (VOID *)(UINTN)((RECOVERY_IMAGE_HOB*)TpmpHit)->Address);
}
TpmRecoveryGetFidFromFv(&Fid);
ProjectVersion = Fid.ProjectMajorVersion[0] + Fid.ProjectMajorVersion[1] + Fid.ProjectMajorVersion[2];
ProjectVersion <<= 16;
ProjectVersion += Fid.ProjectMinorVersion[0] + Fid.ProjectMinorVersion[1] + Fid.ProjectMinorVersion[2];
NewProjectVersion = RecoveryFid.ProjectMajorVersion[0] + RecoveryFid.ProjectMajorVersion[1] + RecoveryFid.ProjectMajorVersion[2];
NewProjectVersion <<= 16;
NewProjectVersion += RecoveryFid.ProjectMinorVersion[0] + RecoveryFid.ProjectMinorVersion[1] + RecoveryFid.ProjectMinorVersion[2];
if(NewProjectVersion < ProjectVersion){
ClearResults = ClearTpmBeforeFlash();
if(ClearResults == TPM_CLEAR_RESET_REQUIRED)
{
Status = pBS->LocateProtocol(&gAmiPostManagerProtocolGuid, NULL, &TpmClearAmiPostMgr);
if(EFI_ERROR(Status))return;
if(TpmClearAmiPostMgr != NULL) {
Status = TpmClearAmiPostMgr->DisplayInfoBox(L"TPM CLEAR",\
L"Caution: A Reset is required to Clear the TPM for Flash Update. Enable Recovery after reset",20, &MyEvent);
FixedDelay(1000000); //10seconds delay
}
pRS->ResetSystem( EfiResetCold, 0, 0, NULL );
}
}
}
//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2010, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
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