Tpm2DeviceLibDTpm.c File Reference

#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/Tpm2DeviceLib.h>
#include <Library/PcdLib.h>
#include "Tpm2DeviceLibDTpm.h"

Go to the source code of this file.

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	Tpm2SubmitCommand (IN UINT32 InputParameterBlockSize, IN UINT8 *InputParameterBlock, IN OUT UINT32 *OutputParameterBlockSize, IN UINT8 *OutputParameterBlock)
EFI_STATUS EFIAPI	Tpm2RequestUseTpm (VOID)
EFI_STATUS EFIAPI	Tpm2RegisterTpm2DeviceLib (IN TPM2_DEVICE_INTERFACE *Tpm2Device)
EFI_STATUS EFIAPI	Tpm2DeviceLibConstructor (VOID)

Detailed Description

This library is TPM2 DTPM device lib. Choosing this library means platform uses and only uses DTPM device as TPM2 engine.

Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file Tpm2DeviceLibDTpm.c.

Function Documentation

DTpm2RequestUseTpm()

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.

Definition at line 633 of file Tpm2Ptp.c.

DTpm2SubmitCommand()

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.

Definition at line 591 of file Tpm2Ptp.c.

Tpm2DeviceLibConstructor()

EFI_STATUS EFIAPI Tpm2DeviceLibConstructor

(

VOID

)

The function caches current active TPM interface type.

Return values

EFI_SUCCESS

DTPM2.0 instance is registered, or system does not support register DTPM2.0 instance

Definition at line 122 of file Tpm2DeviceLibDTpm.c.

Tpm2RegisterTpm2DeviceLib()

EFI_STATUS EFIAPI Tpm2RegisterTpm2DeviceLib

(

IN TPM2_DEVICE_INTERFACE *

Tpm2Device

)

This service register TPM2 device.

Parameters

Tpm2Device

TPM2 device

Return values

EFI_SUCCESS	This TPM2 device is registered successfully.
EFI_UNSUPPORTED	System does not support register this TPM2 device.
EFI_ALREADY_STARTED	System already register this TPM2 device.

Definition at line 108 of file Tpm2DeviceLibDTpm.c.

Tpm2RequestUseTpm()

EFI_STATUS EFIAPI Tpm2RequestUseTpm

(

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.

Definition at line 90 of file Tpm2DeviceLibDTpm.c.

Tpm2SubmitCommand()

EFI_STATUS EFIAPI Tpm2SubmitCommand	(	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.

Definition at line 66 of file Tpm2DeviceLibDTpm.c.