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c1d93242 JY |
1 | /** @file\r |
2 | Implement TPM2 Startup related command.\r | |
3 | \r | |
f1e95ab8 | 4 | Copyright (c) 2013 - 2016, Intel Corporation. All rights reserved. <BR>\r |
148bd4e3 | 5 | (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>\r |
c1d93242 JY |
6 | This program and the accompanying materials\r |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #include <IndustryStandard/UefiTcgPlatform.h>\r | |
17 | #include <Library/Tpm2CommandLib.h>\r | |
18 | #include <Library/Tpm2DeviceLib.h>\r | |
19 | #include <Library/BaseMemoryLib.h>\r | |
20 | #include <Library/BaseLib.h>\r | |
21 | #include <Library/DebugLib.h>\r | |
22 | \r | |
23 | #pragma pack(1)\r | |
24 | \r | |
25 | typedef struct {\r | |
26 | TPM2_COMMAND_HEADER Header;\r | |
27 | TPM_SU StartupType;\r | |
28 | } TPM2_STARTUP_COMMAND;\r | |
29 | \r | |
30 | typedef struct {\r | |
31 | TPM2_RESPONSE_HEADER Header;\r | |
32 | } TPM2_STARTUP_RESPONSE;\r | |
33 | \r | |
34 | typedef struct {\r | |
35 | TPM2_COMMAND_HEADER Header;\r | |
36 | TPM_SU ShutdownType;\r | |
37 | } TPM2_SHUTDOWN_COMMAND;\r | |
38 | \r | |
39 | typedef struct {\r | |
40 | TPM2_RESPONSE_HEADER Header;\r | |
41 | } TPM2_SHUTDOWN_RESPONSE;\r | |
42 | \r | |
43 | #pragma pack()\r | |
44 | \r | |
45 | /**\r | |
46 | Send Startup command to TPM2.\r | |
47 | \r | |
48 | @param[in] StartupType TPM_SU_CLEAR or TPM_SU_STATE\r | |
49 | \r | |
50 | @retval EFI_SUCCESS Operation completed successfully.\r | |
51 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
52 | **/\r | |
53 | EFI_STATUS\r | |
54 | EFIAPI\r | |
55 | Tpm2Startup (\r | |
56 | IN TPM_SU StartupType\r | |
57 | )\r | |
58 | {\r | |
59 | EFI_STATUS Status;\r | |
60 | TPM2_STARTUP_COMMAND Cmd;\r | |
61 | TPM2_STARTUP_RESPONSE Res;\r | |
62 | UINT32 ResultBufSize;\r | |
f1e95ab8 | 63 | TPM_RC ResponseCode;\r |
c1d93242 JY |
64 | \r |
65 | Cmd.Header.tag = SwapBytes16(TPM_ST_NO_SESSIONS);\r | |
66 | Cmd.Header.paramSize = SwapBytes32(sizeof(Cmd));\r | |
67 | Cmd.Header.commandCode = SwapBytes32(TPM_CC_Startup);\r | |
68 | Cmd.StartupType = SwapBytes16(StartupType);\r | |
69 | \r | |
70 | ResultBufSize = sizeof(Res);\r | |
71 | Status = Tpm2SubmitCommand (sizeof(Cmd), (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);\r | |
f1e95ab8 JY |
72 | if (EFI_ERROR(Status)) {\r |
73 | return Status;\r | |
74 | }\r | |
75 | \r | |
76 | ResponseCode = SwapBytes32(Res.Header.responseCode);\r | |
77 | switch (ResponseCode) {\r | |
78 | case TPM_RC_SUCCESS:\r | |
148bd4e3 SEHM |
79 | DEBUG ((DEBUG_INFO, "TPM2Startup: TPM_RC_SUCCESS\n"));\r |
80 | return EFI_SUCCESS;\r | |
f1e95ab8 JY |
81 | case TPM_RC_INITIALIZE:\r |
82 | // TPM_RC_INITIALIZE can be returned if Tpm2Startup is not required.\r | |
148bd4e3 | 83 | DEBUG ((DEBUG_INFO, "TPM2Startup: TPM_RC_INITIALIZE\n"));\r |
f1e95ab8 JY |
84 | return EFI_SUCCESS;\r |
85 | default:\r | |
86 | DEBUG ((EFI_D_ERROR, "Tpm2Startup: Response Code error! 0x%08x\r\n", ResponseCode));\r | |
87 | return EFI_DEVICE_ERROR;\r | |
88 | }\r | |
c1d93242 JY |
89 | }\r |
90 | \r | |
91 | /**\r | |
92 | Send Shutdown command to TPM2.\r | |
93 | \r | |
94 | @param[in] ShutdownType TPM_SU_CLEAR or TPM_SU_STATE.\r | |
95 | \r | |
96 | @retval EFI_SUCCESS Operation completed successfully.\r | |
97 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
98 | **/\r | |
99 | EFI_STATUS\r | |
100 | EFIAPI\r | |
101 | Tpm2Shutdown (\r | |
102 | IN TPM_SU ShutdownType\r | |
103 | )\r | |
104 | {\r | |
105 | EFI_STATUS Status;\r | |
106 | TPM2_SHUTDOWN_COMMAND Cmd;\r | |
107 | TPM2_SHUTDOWN_RESPONSE Res;\r | |
108 | UINT32 ResultBufSize;\r | |
109 | \r | |
110 | Cmd.Header.tag = SwapBytes16(TPM_ST_NO_SESSIONS);\r | |
111 | Cmd.Header.paramSize = SwapBytes32(sizeof(Cmd));\r | |
112 | Cmd.Header.commandCode = SwapBytes32(TPM_CC_Shutdown);\r | |
113 | Cmd.ShutdownType = SwapBytes16(ShutdownType);\r | |
114 | \r | |
115 | ResultBufSize = sizeof(Res);\r | |
116 | Status = Tpm2SubmitCommand (sizeof(Cmd), (UINT8 *)&Cmd, &ResultBufSize, (UINT8 *)&Res);\r | |
f1e95ab8 JY |
117 | if (EFI_ERROR(Status)) {\r |
118 | return Status;\r | |
119 | }\r | |
120 | \r | |
121 | if (SwapBytes32(Res.Header.responseCode) != TPM_RC_SUCCESS) {\r | |
122 | DEBUG ((EFI_D_ERROR, "Tpm2Shutdown: Response Code error! 0x%08x\r\n", SwapBytes32(Res.Header.responseCode)));\r | |
123 | return EFI_DEVICE_ERROR;\r | |
124 | }\r | |
c1d93242 | 125 | \r |
f1e95ab8 | 126 | return EFI_SUCCESS;\r |
c1d93242 | 127 | }\r |