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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/TcgPlatformSetupPeiPolicy/TcgPlatformSetupPeiPolicy.c 1 4/21/14 2:18p Fredericko $
//
// $Revision: 1 $
//
// $Date: 4/21/14 2:18p $
//**********************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Modules/TCG2/Common/TcgPlatformSetupPeiPolicy/TcgPlatformSetupPeiPolicy.c $
//
// 1 4/21/14 2:18p Fredericko
//
// 2 12/10/13 12:56p Fredericko
// [TAG] EIP143615
// [Category] Bug Fix
// [Severity] Minor
// [Symptom] Bitlocker WHCK failure
// [RootCause] PPI interface for TPM 1.2 device was failing
// [Solution] Fix the error in PPI interface error
// [Files] TcgPlatformSetupPeiPolicy.c
//
// 1 10/08/13 12:05p Fredericko
// Initial Check-In for Tpm-Next module
//
// 2 10/03/13 2:42p Fredericko
//
// 1 7/10/13 5:56p Fredericko
// [TAG] EIP120969
// [Category] New Feature
// [Description] TCG (TPM20)
//
// 4 9/07/12 11:00a Fredericko
// [TAG] EIP94081
// [Category] Bug Fix
// [Severity] Normal
// [Symptom] TcgPlatformSetupPeiPolicy.c does not load defaults when
// unable to load Setup variable
// [RootCause] Setupvariables not initialized if NVRAM is corrupted.
// [Solution] Initialize TCG variables to default if NVRAM corrupted
// [Files] TcgPlatformSetupPeiPolicy.c
//
// 3 12/18/11 10:24p Fredericko
// Changes to support TcgplatformPeiPolicy in relation to O.S. requests.
//
// 2 10/07/11 6:52p Fredericko
//
// 1 9/27/11 10:10p Fredericko
// [TAG] EIP67286
// [Category] Improvement
// [Description] Initial check-in for Tcg Setup policy for pei
// [Files] TcgPlatformSetupPeiPolicy.cif
// TcgPlatformSetupPeiPolicy.c
// TcgPlatformSetupPeiPolicy.h
// TcgPlatformSetupPeiPolicy.sdl
// TcgPlatformSetupPeiPolicy.mak
// TcgPlatformSetupPeiPolicy.dxs
//
//**********************************************************************
//<AMI_FHDR_START>
//---------------------------------------------------------------------------
// Name: TcgPlatformpeipolicy.c
//
// Description: Installs Tcg policy from setup variables in Pei
//
//---------------------------------------------------------------------------
//<AMI_FHDR_END>
#include <AmiPeiLib.h>
#include "TcgPlatformSetupPeiPolicy.h"
EFI_GUID gTcgPlatformSetupPolicyGuid = TCG_PLATFORM_SETUP_PEI_POLICY_GUID;
EFI_GUID gTcgPeiInternalflagsGuid = PEI_TCG_INTERNAL_FLAGS_GUID;
EFI_GUID gTcgInternalPeiSyncflagGuid = TCG_PPI_SYNC_FLAG_GUID;
EFI_STATUS
getTcgPeiPolicy (IN EFI_PEI_SERVICES **PeiServices ,
IN TCG_CONFIGURATION *ConfigFlags)
{
EFI_STATUS Status;
EFI_PEI_READ_ONLY_VARIABLE_PPI *ReadOnlyVariable;
EFI_GUID gPeiReadOnlyVariablePpiGuid
= EFI_PEI_READ_ONLY_VARIABLE_PPI_GUID;
UINTN VariableSize = sizeof(SETUP_DATA);
SETUP_DATA SetupData;
EFI_GUID gSetupGuid = SETUP_GUID;
UINT8 DisallowTpmFlag=0;
UINT8 SyncVar = 0;
UINTN SyncVarSize = sizeof(UINT8);
//
//
//
Status = (*PeiServices)->LocatePpi(
PeiServices,
&gPeiReadOnlyVariablePpiGuid,
0, NULL,
&ReadOnlyVariable);
PEI_TRACE((-1, PeiServices, "gPeiReadOnlyVariablePpiGuid Status = %r \n", Status));
if(!EFI_ERROR(Status)){
Status = ReadOnlyVariable->GetVariable(PeiServices,
L"Setup",
&gSetupGuid,
NULL,
&VariableSize,
&SetupData);
PEI_TRACE((-1, PeiServices, "gSetupGuid Status = %r \n", Status));
if (EFI_ERROR(Status)) {
ConfigFlags->TpmSupport = 0;
ConfigFlags->TcmSupport = 0;
ConfigFlags->TpmEnable = 0;
ConfigFlags->TpmAuthenticate = 0;
ConfigFlags->TpmOperation = 0;
ConfigFlags->Tpm20Device = 0;
} else {
ConfigFlags->TpmSupport = SetupData.TpmSupport;
ConfigFlags->TcmSupport = SetupData.TcmSupport;
ConfigFlags->TpmEnable = SetupData.TpmEnable ;
ConfigFlags->TpmAuthenticate = SetupData.TpmAuthenticate;
ConfigFlags->TpmOperation = SetupData.TpmOperation;
ConfigFlags->Tpm20Device = SetupData.Tpm20Device;
ConfigFlags->Reserved1 = SetupData.ShaPolicy;
}
VariableSize = sizeof(UINT8);
Status = ReadOnlyVariable->GetVariable(PeiServices,
L"InternalDisallowTpmFlag",
&gTcgPeiInternalflagsGuid,
NULL,
&VariableSize,
&DisallowTpmFlag);
if(EFI_ERROR(Status)){
Status = EFI_SUCCESS;
DisallowTpmFlag = 0;
}
PEI_TRACE((-1, PeiServices, "gTcgPeiInternalflagsGuid Status = %r \n", Status));
Status = ReadOnlyVariable->GetVariable(PeiServices,
L"TcgInternalSyncFlag",
&gTcgInternalPeiSyncflagGuid,
NULL,
&SyncVarSize,
&SyncVar);
PEI_TRACE((-1, PeiServices, "gTcgInternalPeiSyncflagGuid Status = %r \n", Status));
if(EFI_ERROR(Status)){
SyncVar = 0;
Status = EFI_SUCCESS;
}
ConfigFlags->Reserved2 = 0;
ConfigFlags->DisallowTpm = DisallowTpmFlag;
ConfigFlags->TpmHardware = 0;
ConfigFlags->TpmEnaDisable = 0;
ConfigFlags->TpmActDeact = 0;
ConfigFlags->TpmOwnedUnowned = 0;
ConfigFlags->TcgSupportEnabled = 0;
ConfigFlags->TpmError = 0;
ConfigFlags->PpiSetupSyncFlag = SyncVar;
ConfigFlags->Reserved3 = 0;
ConfigFlags->Reserved4 = 0;
ConfigFlags->Reserved5 = 0;
}else{
ConfigFlags->TpmSupport = 0;
ConfigFlags->TcmSupport = 0;
ConfigFlags->TpmEnable = 0 ;
ConfigFlags->TpmAuthenticate = 0;
ConfigFlags->TpmOperation = 0;
ConfigFlags->DisallowTpm = 0;
ConfigFlags->Reserved1 = 0;
ConfigFlags->Reserved2 = 0;
ConfigFlags->TpmHardware = 0;
ConfigFlags->TpmEnaDisable = 0;
ConfigFlags->TpmActDeact = 0;
ConfigFlags->TpmOwnedUnowned = 0;
ConfigFlags->TcgSupportEnabled = 0;
ConfigFlags->TpmError = 0;
ConfigFlags->PpiSetupSyncFlag = 0;
ConfigFlags->Reserved3 = 0;
ConfigFlags->Reserved4 = 0;
ConfigFlags->Reserved5 = 0;
}
return Status;
}
static TCG_PLATFORM_SETUP_INTERFACE TcgPlatformSetupInstance = {
TCG_PLATFORM_SETUP_PEI_PROTOCOL_REVISION_1,
getTcgPeiPolicy
};
static EFI_PEI_PPI_DESCRIPTOR TcgPlatformSetupPeiPolicyDesc[] = {
{
EFI_PEI_PPI_DESCRIPTOR_PPI
| EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
&gTcgPlatformSetupPolicyGuid,
&TcgPlatformSetupInstance
}
};
//**********************************************************************
//<AMI_PHDR_START>
//
// Procedure: TcgPlatformSetupPolicyEntryPoint
//
// Description: Entry point for TcgPlatformSetupPolicyEntryPoint
//
// Input: ImageHandle Image handle of this driver.
// SystemTable Global system service table.
//
// Output: EFI_STATUS
//
// Modified:
//
// Referrals:
//
// Notes:
//<AMI_PHDR_END>
//**********************************************************************
EFI_STATUS
EFIAPI
TcgPlatformSetupPeiPolicyEntryPoint (
IN EFI_FFS_FILE_HEADER *FfsHeader,
IN EFI_PEI_SERVICES **PeiServices
)
{
EFI_STATUS Status;
EFI_PEI_READ_ONLY_VARIABLE_PPI *ReadOnlyVariable;
EFI_GUID gPeiReadOnlyVariablePpiGuid
= EFI_PEI_READ_ONLY_VARIABLE_PPI_GUID;
UINTN VariableSize = sizeof(SETUP_DATA);
SETUP_DATA SetupData;
EFI_GUID gSetupGuid = SETUP_GUID;
Status = (*PeiServices)->LocatePpi(
PeiServices,
&gPeiReadOnlyVariablePpiGuid,
0, NULL,
&ReadOnlyVariable);
if (EFI_ERROR(Status))
return EFI_SUCCESS;
Status = ReadOnlyVariable->GetVariable(PeiServices,
L"Setup",
&gSetupGuid,
NULL,
&VariableSize,
&SetupData);
Status = (**PeiServices).InstallPpi (PeiServices, TcgPlatformSetupPeiPolicyDesc);
return Status;
}
//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2010, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
|
