/** @file | |
Implement TPM1.2 Startup related command. | |
Copyright (c) 2013, 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 <PiPei.h> | |
#include <Library/BaseMemoryLib.h> | |
#include <Library/BaseLib.h> | |
#include <Library/Tpm12DeviceLib.h> | |
#include <Library/DebugLib.h> | |
#pragma pack(1) | |
typedef struct { | |
TPM_RQU_COMMAND_HDR Hdr; | |
TPM_STARTUP_TYPE TpmSt; | |
} TPM_CMD_START_UP; | |
#pragma pack() | |
/** | |
Send Startup command to TPM1.2. | |
@param TpmSt Startup Type. | |
@retval EFI_SUCCESS Operation completed successfully. | |
@retval EFI_DEVICE_ERROR Unexpected device behavior. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
Tpm12Startup ( | |
IN TPM_STARTUP_TYPE TpmSt | |
) | |
{ | |
EFI_STATUS Status; | |
TPM_CMD_START_UP Command; | |
TPM_RSP_COMMAND_HDR Response; | |
UINT32 Length; | |
// | |
// send Tpm command TPM_ORD_Startup | |
// | |
Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND); | |
Command.Hdr.paramSize = SwapBytes32 (sizeof (Command)); | |
Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_Startup); | |
Command.TpmSt = SwapBytes16 (TpmSt); | |
Length = sizeof (Response); | |
Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response); | |
if (EFI_ERROR (Status)) { | |
return Status; | |
} | |
switch (SwapBytes32(Response.returnCode)) { | |
case TPM_SUCCESS: | |
DEBUG ((DEBUG_INFO, "TPM12Startup: TPM_SUCCESS\n")); | |
return EFI_SUCCESS; | |
case TPM_INVALID_POSTINIT: | |
// In warm reset, TPM may response TPM_INVALID_POSTINIT | |
DEBUG ((DEBUG_INFO, "TPM12Startup: TPM_INVALID_POSTINIT\n")); | |
return EFI_SUCCESS; | |
default: | |
return EFI_DEVICE_ERROR; | |
} | |
} | |
/** | |
Send SaveState command to TPM1.2. | |
@retval EFI_SUCCESS Operation completed successfully. | |
@retval EFI_DEVICE_ERROR Unexpected device behavior. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
Tpm12SaveState ( | |
VOID | |
) | |
{ | |
EFI_STATUS Status; | |
TPM_RQU_COMMAND_HDR Command; | |
TPM_RSP_COMMAND_HDR Response; | |
UINT32 Length; | |
// | |
// send Tpm command TPM_ORD_SaveState | |
// | |
Command.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND); | |
Command.paramSize = SwapBytes32 (sizeof (Command)); | |
Command.ordinal = SwapBytes32 (TPM_ORD_SaveState); | |
Length = sizeof (Response); | |
Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response); | |
if (EFI_ERROR (Status)) { | |
return Status; | |
} | |
switch (SwapBytes32 (Response.returnCode)) { | |
case TPM_SUCCESS: | |
return EFI_SUCCESS; | |
default: | |
return EFI_DEVICE_ERROR; | |
} | |
} |