2 Ihis library is TPM2 DTPM instance.
3 It can be registered to Tpm2 Device router, to be active TPM2 engine,
4 based on platform setting.
6 Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>
7 This program and the accompanying materials
8 are licensed and made available under the terms and conditions of the BSD License
9 which accompanies this distribution. The full text of the license may be found at
10 http://opensource.org/licenses/bsd-license.php
12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
17 #include <Library/BaseLib.h>
18 #include <Library/BaseMemoryLib.h>
19 #include <Library/DebugLib.h>
20 #include <Library/Tpm2DeviceLib.h>
22 #include <Guid/TpmInstance.h>
25 This service enables the sending of commands to the TPM2.
27 @param[in] InputParameterBlockSize Size of the TPM2 input parameter block.
28 @param[in] InputParameterBlock Pointer to the TPM2 input parameter block.
29 @param[in,out] OutputParameterBlockSize Size of the TPM2 output parameter block.
30 @param[in] OutputParameterBlock Pointer to the TPM2 output parameter block.
32 @retval EFI_SUCCESS The command byte stream was successfully sent to the device and a response was successfully received.
33 @retval EFI_DEVICE_ERROR The command was not successfully sent to the device or a response was not successfully received from the device.
34 @retval EFI_BUFFER_TOO_SMALL The output parameter block is too small.
39 IN UINT32 InputParameterBlockSize
,
40 IN UINT8
*InputParameterBlock
,
41 IN OUT UINT32
*OutputParameterBlockSize
,
42 IN UINT8
*OutputParameterBlock
46 This service requests use TPM2.
48 @retval EFI_SUCCESS Get the control of TPM2 chip.
49 @retval EFI_NOT_FOUND TPM2 not found.
50 @retval EFI_DEVICE_ERROR Unexpected device behavior.
58 TPM2_DEVICE_INTERFACE mDTpm2InternalTpm2Device
= {
59 TPM_DEVICE_INTERFACE_TPM20_DTPM
,
65 The function register DTPM2.0 instance.
67 @retval EFI_SUCCESS DTPM2.0 instance is registered, or system dose not surpport registr DTPM2.0 instance
71 Tpm2InstanceLibDTpmConstructor (
77 Status
= Tpm2RegisterTpm2DeviceLib (&mDTpm2InternalTpm2Device
);
78 if ((Status
== EFI_SUCCESS
) || (Status
== EFI_UNSUPPORTED
)) {
80 // Unsupported means platform policy does not need this instance enabled.