/** @file | |
Implement TPM2 Startup related command. | |
Copyright (c) 2013 - 2016, Intel Corporation. All rights reserved. <BR> | |
(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR> | |
This program and the accompanying materials | |
are licensed and made available under the terms and conditions of the BSD License | |
which accompanies this distribution. The full text of the license may be found at | |
http://opensource.org/licenses/bsd-license.php | |
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
**/ | |
#include <IndustryStandard/UefiTcgPlatform.h> | |
#include <Library/Tpm2CommandLib.h> | |
#include <Library/Tpm2DeviceLib.h> | |
#include <Library/BaseMemoryLib.h> | |
#include <Library/BaseLib.h> | |
#include <Library/DebugLib.h> | |
#pragma pack(1) | |
typedef struct { | |
TPM2_COMMAND_HEADER Header; | |
TPM_SU StartupType; | |
} TPM2_STARTUP_COMMAND; | |
typedef struct { | |
TPM2_RESPONSE_HEADER Header; | |
} TPM2_STARTUP_RESPONSE; | |
typedef struct { | |
TPM2_COMMAND_HEADER Header; | |
TPM_SU ShutdownType; | |
} TPM2_SHUTDOWN_COMMAND; | |
typedef struct { | |
TPM2_RESPONSE_HEADER Header; | |
} TPM2_SHUTDOWN_RESPONSE; | |
#pragma pack() | |
/** | |
Send Startup command to TPM2. | |
@param[in] StartupType TPM_SU_CLEAR or TPM_SU_STATE | |
@retval EFI_SUCCESS Operation completed successfully. | |
@retval EFI_DEVICE_ERROR Unexpected device behavior. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
Tpm2Startup ( | |
IN TPM_SU StartupType | |
) | |
{ | |
EFI_STATUS Status; | |
TPM2_STARTUP_COMMAND Cmd; | |
TPM2_STARTUP_RESPONSE Res; | |
UINT32 ResultBufSize; | |
TPM_RC ResponseCode; | |
Cmd.Header.tag = SwapBytes16(TPM_ST_NO_SESSIONS); | |
Cmd.Header.paramSize = SwapBytes32(sizeof(Cmd)); | |
Cmd.Header.commandCode = SwapBytes32(TPM_CC_Startup); | |
Cmd.StartupType = SwapBytes16(StartupType); | |
ResultBufSize = sizeof(Res); | |
Status = Tpm2SubmitCommand (sizeof(Cmd), (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res); | |
if (EFI_ERROR(Status)) { | |
return Status; | |
} | |
ResponseCode = SwapBytes32(Res.Header.responseCode); | |
switch (ResponseCode) { | |
case TPM_RC_SUCCESS: | |
DEBUG ((DEBUG_INFO, "TPM2Startup: TPM_RC_SUCCESS\n")); | |
return EFI_SUCCESS; | |
case TPM_RC_INITIALIZE: | |
// TPM_RC_INITIALIZE can be returned if Tpm2Startup is not required. | |
DEBUG ((DEBUG_INFO, "TPM2Startup: TPM_RC_INITIALIZE\n")); | |
return EFI_SUCCESS; | |
default: | |
DEBUG ((EFI_D_ERROR, "Tpm2Startup: Response Code error! 0x%08x\r\n", ResponseCode)); | |
return EFI_DEVICE_ERROR; | |
} | |
} | |
/** | |
Send Shutdown command to TPM2. | |
@param[in] ShutdownType TPM_SU_CLEAR or TPM_SU_STATE. | |
@retval EFI_SUCCESS Operation completed successfully. | |
@retval EFI_DEVICE_ERROR Unexpected device behavior. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
Tpm2Shutdown ( | |
IN TPM_SU ShutdownType | |
) | |
{ | |
EFI_STATUS Status; | |
TPM2_SHUTDOWN_COMMAND Cmd; | |
TPM2_SHUTDOWN_RESPONSE Res; | |
UINT32 ResultBufSize; | |
Cmd.Header.tag = SwapBytes16(TPM_ST_NO_SESSIONS); | |
Cmd.Header.paramSize = SwapBytes32(sizeof(Cmd)); | |
Cmd.Header.commandCode = SwapBytes32(TPM_CC_Shutdown); | |
Cmd.ShutdownType = SwapBytes16(ShutdownType); | |
ResultBufSize = sizeof(Res); | |
Status = Tpm2SubmitCommand (sizeof(Cmd), (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res); | |
if (EFI_ERROR(Status)) { | |
return Status; | |
} | |
if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) { | |
DEBUG ((EFI_D_ERROR, "Tpm2Shutdown: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode))); | |
return EFI_DEVICE_ERROR; | |
} | |
return EFI_SUCCESS; | |
} |