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1 | /** @file\r | |
2 | Implement TPM1.2 Startup related command.\r | |
3 | \r | |
4 | Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>\r | |
5 | (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>\r | |
6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
7 | \r | |
8 | **/\r | |
9 | \r | |
10 | #include <PiPei.h>\r | |
11 | #include <Library/BaseMemoryLib.h>\r | |
12 | #include <Library/BaseLib.h>\r | |
13 | #include <Library/Tpm12DeviceLib.h>\r | |
14 | #include <Library/DebugLib.h>\r | |
15 | \r | |
16 | #pragma pack(1)\r | |
17 | \r | |
18 | typedef struct {\r | |
19 | TPM_RQU_COMMAND_HDR Hdr;\r | |
20 | TPM_STARTUP_TYPE TpmSt;\r | |
21 | } TPM_CMD_START_UP;\r | |
22 | \r | |
23 | #pragma pack()\r | |
24 | \r | |
25 | /**\r | |
26 | Send Startup command to TPM1.2.\r | |
27 | \r | |
28 | @param TpmSt Startup Type.\r | |
29 | \r | |
30 | @retval EFI_SUCCESS Operation completed successfully.\r | |
31 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
32 | **/\r | |
33 | EFI_STATUS\r | |
34 | EFIAPI\r | |
35 | Tpm12Startup (\r | |
36 | IN TPM_STARTUP_TYPE TpmSt\r | |
37 | )\r | |
38 | {\r | |
39 | EFI_STATUS Status;\r | |
40 | TPM_CMD_START_UP Command;\r | |
41 | TPM_RSP_COMMAND_HDR Response;\r | |
42 | UINT32 Length;\r | |
43 | \r | |
44 | //\r | |
45 | // send Tpm command TPM_ORD_Startup\r | |
46 | //\r | |
47 | Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r | |
48 | Command.Hdr.paramSize = SwapBytes32 (sizeof (Command));\r | |
49 | Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_Startup);\r | |
50 | Command.TpmSt = SwapBytes16 (TpmSt);\r | |
51 | Length = sizeof (Response);\r | |
52 | Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);\r | |
53 | if (EFI_ERROR (Status)) {\r | |
54 | return Status;\r | |
55 | }\r | |
56 | \r | |
57 | switch (SwapBytes32 (Response.returnCode)) {\r | |
58 | case TPM_SUCCESS:\r | |
59 | DEBUG ((DEBUG_INFO, "TPM12Startup: TPM_SUCCESS\n"));\r | |
60 | return EFI_SUCCESS;\r | |
61 | case TPM_INVALID_POSTINIT:\r | |
62 | // In warm reset, TPM may response TPM_INVALID_POSTINIT\r | |
63 | DEBUG ((DEBUG_INFO, "TPM12Startup: TPM_INVALID_POSTINIT\n"));\r | |
64 | return EFI_SUCCESS;\r | |
65 | default:\r | |
66 | return EFI_DEVICE_ERROR;\r | |
67 | }\r | |
68 | }\r | |
69 | \r | |
70 | /**\r | |
71 | Send SaveState command to TPM1.2.\r | |
72 | \r | |
73 | @retval EFI_SUCCESS Operation completed successfully.\r | |
74 | @retval EFI_DEVICE_ERROR Unexpected device behavior.\r | |
75 | **/\r | |
76 | EFI_STATUS\r | |
77 | EFIAPI\r | |
78 | Tpm12SaveState (\r | |
79 | VOID\r | |
80 | )\r | |
81 | {\r | |
82 | EFI_STATUS Status;\r | |
83 | TPM_RQU_COMMAND_HDR Command;\r | |
84 | TPM_RSP_COMMAND_HDR Response;\r | |
85 | UINT32 Length;\r | |
86 | \r | |
87 | //\r | |
88 | // send Tpm command TPM_ORD_SaveState\r | |
89 | //\r | |
90 | Command.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);\r | |
91 | Command.paramSize = SwapBytes32 (sizeof (Command));\r | |
92 | Command.ordinal = SwapBytes32 (TPM_ORD_SaveState);\r | |
93 | Length = sizeof (Response);\r | |
94 | Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);\r | |
95 | if (EFI_ERROR (Status)) {\r | |
96 | return Status;\r | |
97 | }\r | |
98 | \r | |
99 | switch (SwapBytes32 (Response.returnCode)) {\r | |
100 | case TPM_SUCCESS:\r | |
101 | return EFI_SUCCESS;\r | |
102 | default:\r | |
103 | return EFI_DEVICE_ERROR;\r | |
104 | }\r | |
105 | }\r |