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[mirror_edk2.git] / SecurityPkg / Library / Tpm12CommandLib / Tpm12Startup.c
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1/** @file\r
2 Implement TPM1.2 Startup related command.\r
3\r
4Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>\r
5(C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>\r
6SPDX-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
18typedef 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
33EFI_STATUS\r
34EFIAPI\r
35Tpm12Startup (\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
76EFI_STATUS\r
77EFIAPI\r
78Tpm12SaveState (\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