diff options
Diffstat (limited to 'Core/EM/TCG2/TpmClearOnRollback/TpmClearOnRollback.c')
| -rw-r--r-- | Core/EM/TCG2/TpmClearOnRollback/TpmClearOnRollback.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/Core/EM/TCG2/TpmClearOnRollback/TpmClearOnRollback.c b/Core/EM/TCG2/TpmClearOnRollback/TpmClearOnRollback.c new file mode 100644 index 0000000..2203432 --- /dev/null +++ b/Core/EM/TCG2/TpmClearOnRollback/TpmClearOnRollback.c @@ -0,0 +1,132 @@ +//************************************************************************* +//************************************************************************* +//** ** +//** (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 ** +//** ** +//************************************************************************* +//************************************************************************* |