SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2InstanceLibDTpm.c File Reference


Functions

EFI_STATUS EFIAPI DTpm2SubmitCommand (IN UINT32 InputParameterBlockSize, IN UINT8 *InputParameterBlock, IN OUT UINT32 *OutputParameterBlockSize, IN UINT8 *OutputParameterBlock)
EFI_STATUS EFIAPI DTpm2RequestUseTpm (VOID)
EFI_STATUS EFIAPI Tpm2InstanceLibDTpmConstructor (VOID)

Variables

TPM2_DEVICE_INTERFACE mDTpm2InternalTpm2Device

Detailed Description

Ihis library is TPM2 DTPM instance. It can be registered to Tpm2 Device router, to be active TPM2 engine, based on platform setting.

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 DTpm2RequestUseTpm ( VOID   ) 

This service requests use TPM2.

Return values:
EFI_SUCCESS Get the control of TPM2 chip.
EFI_NOT_FOUND TPM2 not found.
EFI_DEVICE_ERROR Unexpected device behavior.

References TisPcRequestUseTpm(), and UINTN().

Referenced by Tpm2RequestUseTpm().

EFI_STATUS EFIAPI DTpm2SubmitCommand ( IN UINT32  InputParameterBlockSize,
IN UINT8 *  InputParameterBlock,
IN OUT UINT32 *  OutputParameterBlockSize,
IN UINT8 *  OutputParameterBlock 
)

This service enables the sending of commands to the TPM2.

Parameters:
[in] InputParameterBlockSize Size of the TPM2 input parameter block.
[in] InputParameterBlock Pointer to the TPM2 input parameter block.
[in,out] OutputParameterBlockSize Size of the TPM2 output parameter block.
[in] OutputParameterBlock Pointer to the TPM2 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 TisTpmCommand(), and UINTN().

Referenced by Tpm2SubmitCommand().

EFI_STATUS EFIAPI Tpm2InstanceLibDTpmConstructor ( VOID   ) 

The function register DTPM2.0 instance.

Return values:
EFI_SUCCESS DTPM2.0 instance is registered, or system dose not surpport registr DTPM2.0 instance

References EFI_STATUS(), and Tpm2RegisterTpm2DeviceLib().


Variable Documentation


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