SecurityPkg Tpm2DeviceLibDTpm: Update enum type name to match the one in lib
[mirror_edk2.git] / SecurityPkg / Library / Tpm2DeviceLibTcg2 / Tpm2DeviceLibTcg2.c
1 /** @file
2 This library is TPM2 TCG2 protocol lib.
3
4 Copyright (c) 2013 - 2016, Intel Corporation. All rights reserved. <BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
9
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12
13 **/
14
15 #include <Library/BaseLib.h>
16 #include <Library/BaseMemoryLib.h>
17 #include <Library/DebugLib.h>
18 #include <Library/UefiBootServicesTableLib.h>
19 #include <Library/Tpm2DeviceLib.h>
20 #include <Protocol/Tcg2Protocol.h>
21 #include <IndustryStandard/Tpm20.h>
22
23 EFI_TCG2_PROTOCOL *mTcg2Protocol = NULL;
24
25 /**
26 This service enables the sending of commands to the TPM2.
27
28 @param[in] InputParameterBlockSize Size of the TPM2 input parameter block.
29 @param[in] InputParameterBlock Pointer to the TPM2 input parameter block.
30 @param[in,out] OutputParameterBlockSize Size of the TPM2 output parameter block.
31 @param[in] OutputParameterBlock Pointer to the TPM2 output parameter block.
32
33 @retval EFI_SUCCESS The command byte stream was successfully sent to the device and a response was successfully received.
34 @retval EFI_DEVICE_ERROR The command was not successfully sent to the device or a response was not successfully received from the device.
35 @retval EFI_BUFFER_TOO_SMALL The output parameter block is too small.
36 **/
37 EFI_STATUS
38 EFIAPI
39 Tpm2SubmitCommand (
40 IN UINT32 InputParameterBlockSize,
41 IN UINT8 *InputParameterBlock,
42 IN OUT UINT32 *OutputParameterBlockSize,
43 IN UINT8 *OutputParameterBlock
44 )
45 {
46 EFI_STATUS Status;
47 TPM2_RESPONSE_HEADER *Header;
48
49 if (mTcg2Protocol == NULL) {
50 Status = gBS->LocateProtocol (&gEfiTcg2ProtocolGuid, NULL, (VOID **) &mTcg2Protocol);
51 if (EFI_ERROR (Status)) {
52 //
53 // Tcg2 protocol is not installed. So, TPM2 is not present.
54 //
55 DEBUG ((EFI_D_ERROR, "Tpm2SubmitCommand - Tcg2 - %r\n", Status));
56 return EFI_NOT_FOUND;
57 }
58 }
59 //
60 // Assume when Tcg2 Protocol is ready, RequestUseTpm already done.
61 //
62 Status = mTcg2Protocol->SubmitCommand (
63 mTcg2Protocol,
64 InputParameterBlockSize,
65 InputParameterBlock,
66 *OutputParameterBlockSize,
67 OutputParameterBlock
68 );
69 if (EFI_ERROR (Status)) {
70 return Status;
71 }
72 Header = (TPM2_RESPONSE_HEADER *)OutputParameterBlock;
73 *OutputParameterBlockSize = SwapBytes32 (Header->paramSize);
74
75 return EFI_SUCCESS;
76 }
77
78 /**
79 This service requests use TPM2.
80
81 @retval EFI_SUCCESS Get the control of TPM2 chip.
82 @retval EFI_NOT_FOUND TPM2 not found.
83 @retval EFI_DEVICE_ERROR Unexpected device behavior.
84 **/
85 EFI_STATUS
86 EFIAPI
87 Tpm2RequestUseTpm (
88 VOID
89 )
90 {
91 EFI_STATUS Status;
92
93 if (mTcg2Protocol == NULL) {
94 Status = gBS->LocateProtocol (&gEfiTcg2ProtocolGuid, NULL, (VOID **) &mTcg2Protocol);
95 if (EFI_ERROR (Status)) {
96 //
97 // Tcg2 protocol is not installed. So, TPM2 is not present.
98 //
99 DEBUG ((EFI_D_ERROR, "Tpm2RequestUseTpm - Tcg2 - %r\n", Status));
100 return EFI_NOT_FOUND;
101 }
102 }
103 //
104 // Assume when Tcg2 Protocol is ready, RequestUseTpm already done.
105 //
106 return EFI_SUCCESS;
107 }
108
109 /**
110 This service register TPM2 device.
111
112 @param Tpm2Device TPM2 device
113
114 @retval EFI_SUCCESS This TPM2 device is registered successfully.
115 @retval EFI_UNSUPPORTED System does not support register this TPM2 device.
116 @retval EFI_ALREADY_STARTED System already register this TPM2 device.
117 **/
118 EFI_STATUS
119 EFIAPI
120 Tpm2RegisterTpm2DeviceLib (
121 IN TPM2_DEVICE_INTERFACE *Tpm2Device
122 )
123 {
124 return EFI_UNSUPPORTED;
125 }