Commit | Line | Data |
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1abfa4ce | 1 | /** @file\r |
07309c3d | 2 | This library is TPM2 TCG2 protocol lib.\r |
1abfa4ce | 3 | \r |
b3548d32 | 4 | Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved. <BR>\r |
289b714b | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
1abfa4ce JY |
6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include <Library/BaseLib.h>\r | |
10 | #include <Library/BaseMemoryLib.h>\r | |
11 | #include <Library/DebugLib.h>\r | |
12 | #include <Library/UefiBootServicesTableLib.h>\r | |
13 | #include <Library/Tpm2DeviceLib.h>\r | |
14 | #include <Protocol/Tcg2Protocol.h>\r | |
15 | #include <IndustryStandard/Tpm20.h>\r | |
16 | \r | |
b3548d32 | 17 | EFI_TCG2_PROTOCOL *mTcg2Protocol = NULL;\r |
1abfa4ce JY |
18 | \r |
19 | /**\r | |
20 | This service enables the sending of commands to the TPM2.\r | |
21 | \r | |
22 | @param[in] InputParameterBlockSize Size of the TPM2 input parameter block.\r | |
23 | @param[in] InputParameterBlock Pointer to the TPM2 input parameter block.\r | |
24 | @param[in,out] OutputParameterBlockSize Size of the TPM2 output parameter block.\r | |
25 | @param[in] OutputParameterBlock Pointer to the TPM2 output parameter block.\r | |
26 | \r | |
27 | @retval EFI_SUCCESS The command byte stream was successfully sent to the device and a response was successfully received.\r | |
28 | @retval EFI_DEVICE_ERROR The command was not successfully sent to the device or a response was not successfully received from the device.\r | |
b3548d32 | 29 | @retval EFI_BUFFER_TOO_SMALL The output parameter block is too small.\r |
1abfa4ce JY |
30 | **/\r |
31 | EFI_STATUS\r | |
32 | EFIAPI\r | |
33 | Tpm2SubmitCommand (\r | |
c411b485 MK |
34 | IN UINT32 InputParameterBlockSize,\r |
35 | IN UINT8 *InputParameterBlock,\r | |
36 | IN OUT UINT32 *OutputParameterBlockSize,\r | |
37 | IN UINT8 *OutputParameterBlock\r | |
1abfa4ce JY |
38 | )\r |
39 | {\r | |
c411b485 MK |
40 | EFI_STATUS Status;\r |
41 | TPM2_RESPONSE_HEADER *Header;\r | |
1abfa4ce JY |
42 | \r |
43 | if (mTcg2Protocol == NULL) {\r | |
c411b485 | 44 | Status = gBS->LocateProtocol (&gEfiTcg2ProtocolGuid, NULL, (VOID **)&mTcg2Protocol);\r |
1abfa4ce JY |
45 | if (EFI_ERROR (Status)) {\r |
46 | //\r | |
47 | // Tcg2 protocol is not installed. So, TPM2 is not present.\r | |
48 | //\r | |
e905fbb0 | 49 | DEBUG ((DEBUG_ERROR, "Tpm2SubmitCommand - Tcg2 - %r\n", Status));\r |
1abfa4ce JY |
50 | return EFI_NOT_FOUND;\r |
51 | }\r | |
52 | }\r | |
c411b485 | 53 | \r |
1abfa4ce JY |
54 | //\r |
55 | // Assume when Tcg2 Protocol is ready, RequestUseTpm already done.\r | |
56 | //\r | |
57 | Status = mTcg2Protocol->SubmitCommand (\r | |
58 | mTcg2Protocol,\r | |
59 | InputParameterBlockSize,\r | |
60 | InputParameterBlock,\r | |
61 | *OutputParameterBlockSize,\r | |
62 | OutputParameterBlock\r | |
63 | );\r | |
64 | if (EFI_ERROR (Status)) {\r | |
65 | return Status;\r | |
66 | }\r | |
c411b485 MK |
67 | \r |
68 | Header = (TPM2_RESPONSE_HEADER *)OutputParameterBlock;\r | |
1abfa4ce JY |
69 | *OutputParameterBlockSize = SwapBytes32 (Header->paramSize);\r |
70 | \r | |
71 | return EFI_SUCCESS;\r | |
72 | }\r | |
73 | \r | |
74 | /**\r | |
75 | This service requests use TPM2.\r | |
76 | \r | |
77 | @retval EFI_SUCCESS Get the control of TPM2 chip.\r | |
78 | @retval EFI_NOT_FOUND TPM2 not found.\r | |
79 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
80 | **/\r | |
81 | EFI_STATUS\r | |
82 | EFIAPI\r | |
83 | Tpm2RequestUseTpm (\r | |
84 | VOID\r | |
85 | )\r | |
86 | {\r | |
c411b485 | 87 | EFI_STATUS Status;\r |
1abfa4ce JY |
88 | \r |
89 | if (mTcg2Protocol == NULL) {\r | |
c411b485 | 90 | Status = gBS->LocateProtocol (&gEfiTcg2ProtocolGuid, NULL, (VOID **)&mTcg2Protocol);\r |
1abfa4ce JY |
91 | if (EFI_ERROR (Status)) {\r |
92 | //\r | |
93 | // Tcg2 protocol is not installed. So, TPM2 is not present.\r | |
94 | //\r | |
e905fbb0 | 95 | DEBUG ((DEBUG_ERROR, "Tpm2RequestUseTpm - Tcg2 - %r\n", Status));\r |
1abfa4ce JY |
96 | return EFI_NOT_FOUND;\r |
97 | }\r | |
98 | }\r | |
c411b485 | 99 | \r |
1abfa4ce JY |
100 | //\r |
101 | // Assume when Tcg2 Protocol is ready, RequestUseTpm already done.\r | |
102 | //\r | |
103 | return EFI_SUCCESS;\r | |
104 | }\r | |
105 | \r | |
106 | /**\r | |
107 | This service register TPM2 device.\r | |
108 | \r | |
109 | @param Tpm2Device TPM2 device\r | |
110 | \r | |
111 | @retval EFI_SUCCESS This TPM2 device is registered successfully.\r | |
112 | @retval EFI_UNSUPPORTED System does not support register this TPM2 device.\r | |
113 | @retval EFI_ALREADY_STARTED System already register this TPM2 device.\r | |
114 | **/\r | |
115 | EFI_STATUS\r | |
116 | EFIAPI\r | |
117 | Tpm2RegisterTpm2DeviceLib (\r | |
c411b485 | 118 | IN TPM2_DEVICE_INTERFACE *Tpm2Device\r |
1abfa4ce JY |
119 | )\r |
120 | {\r | |
121 | return EFI_UNSUPPORTED;\r | |
122 | }\r |