Tpm12DeviceLib.h 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)

Detailed Description

This library abstract how to access TPM12 hardware device.

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

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.

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.