Tpm2DeviceLibRouterDxe.c File Reference

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

Go to the source code of this file.

Functions
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)

Variables
TPM2_DEVICE_INTERFACE	mInternalTpm2DeviceInterface

Detailed Description

This library is TPM2 device router. Platform can register multi TPM2 instance to it via PcdTpmInstanceGuid. Platform need make choice that which one will be final one. At most one TPM2 instance can be finally registered, and other will return unsupported.

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

Definition in file Tpm2DeviceLibRouterDxe.c.

Function Documentation

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 83 of file Tpm2DeviceLibRouterDxe.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 61 of file Tpm2DeviceLibRouterDxe.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 33 of file Tpm2DeviceLibRouterDxe.c.

Variable Documentation

mInternalTpm2DeviceInterface

TPM2_DEVICE_INTERFACE mInternalTpm2DeviceInterface

Definition at line 17 of file Tpm2DeviceLibRouterDxe.c.