SecurityPkg/Library/Tpm12DeviceLibTcg/Tpm12DeviceLibTcg.c File Reference


Functions

EFI_STATUS EFIAPI Tpm12SubmitCommand (IN UINT32 InputParameterBlockSize, IN UINT8 *InputParameterBlock, IN OUT UINT32 *OutputParameterBlockSize, IN UINT8 *OutputParameterBlock)
EFI_STATUS EFIAPI Tpm12RequestUseTpm (VOID)

Variables

EFI_TCG_PROTOCOL * mTcgProtocol = NULL

Detailed Description

Ihis library is TPM12 TCG protocol lib.

Copyright (c) 2013, Intel Corporation. All rights reserved.
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.


Function Documentation

EFI_STATUS EFIAPI Tpm12RequestUseTpm ( VOID   ) 

This service requests use TPM12.

Return values:
EFI_SUCCESS Get the control of TPM12 chip.
EFI_NOT_FOUND TPM12 not found.
EFI_DEVICE_ERROR Unexpected device behavior.

References EFI_STATUS(), and mTcgProtocol.

Referenced by DetectTpmDevice().

EFI_STATUS EFIAPI Tpm12SubmitCommand ( IN UINT32  InputParameterBlockSize,
IN UINT8 *  InputParameterBlock,
IN OUT UINT32 *  OutputParameterBlockSize,
IN UINT8 *  OutputParameterBlock 
)

This service enables the sending of commands to the TPM12.

Parameters:
[in] InputParameterBlockSize Size of the TPM12 input parameter block.
[in] InputParameterBlock Pointer to the TPM12 input parameter block.
[in,out] OutputParameterBlockSize Size of the TPM12 output parameter block.
[in] OutputParameterBlock Pointer to the TPM12 output parameter block.
Return values:
EFI_SUCCESS The command byte stream was successfully sent to the device and a response was successfully received.
EFI_DEVICE_ERROR The command was not successfully sent to the device or a response was not successfully received from the device.
EFI_BUFFER_TOO_SMALL The output parameter block is too small.

References EFI_STATUS(), and mTcgProtocol.

Referenced by Tpm12ForceClear(), Tpm12NvDefineSpace(), Tpm12NvReadValue(), Tpm12NvWriteValue(), Tpm12SaveState(), and Tpm12Startup().


Variable Documentation

EFI_TCG_PROTOCOL* mTcgProtocol = NULL


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