/** @file | |
Implement TPM1.2 Ownership related command. | |
Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved. <BR> | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#include <PiPei.h> | |
#include <Library/BaseMemoryLib.h> | |
#include <Library/BaseLib.h> | |
#include <Library/Tpm12DeviceLib.h> | |
/** | |
Send ForceClear command to TPM1.2. | |
@retval EFI_SUCCESS Operation completed successfully. | |
@retval EFI_DEVICE_ERROR Unexpected device behavior. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
Tpm12ForceClear ( | |
VOID | |
) | |
{ | |
EFI_STATUS Status; | |
TPM_RQU_COMMAND_HDR Command; | |
TPM_RSP_COMMAND_HDR Response; | |
UINT32 Length; | |
// | |
// send Tpm command TPM_ORD_ForceClear | |
// | |
Command.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND); | |
Command.paramSize = SwapBytes32 (sizeof (Command)); | |
Command.ordinal = SwapBytes32 (TPM_ORD_ForceClear); | |
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; | |
} | |
} |