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1 | /** @file\r | |
2 | The module entry point for Tcg configuration module.\r | |
3 | \r | |
4 | Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>\r | |
5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
6 | \r | |
7 | **/\r | |
8 | \r | |
9 | #include "TcgConfigImpl.h"\r | |
10 | #include <Guid/TpmInstance.h>\r | |
11 | \r | |
12 | /**\r | |
13 | The entry point for Tcg configuration driver.\r | |
14 | \r | |
15 | @param[in] ImageHandle The image handle of the driver.\r | |
16 | @param[in] SystemTable The system table.\r | |
17 | \r | |
18 | @retval EFI_ALREADY_STARTED The driver already exists in system.\r | |
19 | @retval EFI_OUT_OF_RESOURCES Fail to execute entry point due to lack of resources.\r | |
20 | @retval EFI_SUCCESS All the related protocols are installed on the driver.\r | |
21 | @retval Others Fail to install protocols as indicated.\r | |
22 | \r | |
23 | **/\r | |
24 | EFI_STATUS\r | |
25 | EFIAPI\r | |
26 | TcgConfigDriverEntryPoint (\r | |
27 | IN EFI_HANDLE ImageHandle,\r | |
28 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
29 | )\r | |
30 | {\r | |
31 | EFI_STATUS Status;\r | |
32 | TCG_CONFIG_PRIVATE_DATA *PrivateData;\r | |
33 | EFI_TCG_PROTOCOL *TcgProtocol;\r | |
34 | \r | |
35 | if (!CompareGuid (PcdGetPtr (PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceTpm12Guid)) {\r | |
36 | DEBUG ((DEBUG_ERROR, "No TPM12 instance required!\n"));\r | |
37 | return EFI_UNSUPPORTED;\r | |
38 | }\r | |
39 | \r | |
40 | Status = Tpm12RequestUseTpm ();\r | |
41 | if (EFI_ERROR (Status)) {\r | |
42 | DEBUG ((DEBUG_ERROR, "TPM not detected!\n"));\r | |
43 | return Status;\r | |
44 | }\r | |
45 | \r | |
46 | Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **)&TcgProtocol);\r | |
47 | if (EFI_ERROR (Status)) {\r | |
48 | TcgProtocol = NULL;\r | |
49 | }\r | |
50 | \r | |
51 | Status = gBS->OpenProtocol (\r | |
52 | ImageHandle,\r | |
53 | &gEfiCallerIdGuid,\r | |
54 | NULL,\r | |
55 | ImageHandle,\r | |
56 | ImageHandle,\r | |
57 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
58 | );\r | |
59 | if (!EFI_ERROR (Status)) {\r | |
60 | return EFI_ALREADY_STARTED;\r | |
61 | }\r | |
62 | \r | |
63 | //\r | |
64 | // Create a private data structure.\r | |
65 | //\r | |
66 | PrivateData = AllocateCopyPool (sizeof (TCG_CONFIG_PRIVATE_DATA), &mTcgConfigPrivateDateTemplate);\r | |
67 | if (PrivateData == NULL) {\r | |
68 | return EFI_OUT_OF_RESOURCES;\r | |
69 | }\r | |
70 | \r | |
71 | PrivateData->Configuration = AllocatePool (sizeof (TCG_CONFIGURATION));\r | |
72 | if (PrivateData->Configuration == NULL) {\r | |
73 | Status = EFI_OUT_OF_RESOURCES;\r | |
74 | goto ErrorExit;\r | |
75 | }\r | |
76 | \r | |
77 | PrivateData->TcgProtocol = TcgProtocol;\r | |
78 | \r | |
79 | //\r | |
80 | // Install TCG configuration form\r | |
81 | //\r | |
82 | Status = InstallTcgConfigForm (PrivateData);\r | |
83 | if (EFI_ERROR (Status)) {\r | |
84 | goto ErrorExit;\r | |
85 | }\r | |
86 | \r | |
87 | //\r | |
88 | // Install private GUID.\r | |
89 | //\r | |
90 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
91 | &ImageHandle,\r | |
92 | &gEfiCallerIdGuid,\r | |
93 | PrivateData,\r | |
94 | NULL\r | |
95 | );\r | |
96 | \r | |
97 | if (EFI_ERROR (Status)) {\r | |
98 | goto ErrorExit;\r | |
99 | }\r | |
100 | \r | |
101 | return EFI_SUCCESS;\r | |
102 | \r | |
103 | ErrorExit:\r | |
104 | if (PrivateData != NULL) {\r | |
105 | UninstallTcgConfigForm (PrivateData);\r | |
106 | }\r | |
107 | \r | |
108 | return Status;\r | |
109 | }\r | |
110 | \r | |
111 | /**\r | |
112 | Unload the Tcg configuration form.\r | |
113 | \r | |
114 | @param[in] ImageHandle The driver's image handle.\r | |
115 | \r | |
116 | @retval EFI_SUCCESS The Tcg configuration form is unloaded.\r | |
117 | @retval Others Failed to unload the form.\r | |
118 | \r | |
119 | **/\r | |
120 | EFI_STATUS\r | |
121 | EFIAPI\r | |
122 | TcgConfigDriverUnload (\r | |
123 | IN EFI_HANDLE ImageHandle\r | |
124 | )\r | |
125 | {\r | |
126 | EFI_STATUS Status;\r | |
127 | TCG_CONFIG_PRIVATE_DATA *PrivateData;\r | |
128 | \r | |
129 | Status = gBS->HandleProtocol (\r | |
130 | ImageHandle,\r | |
131 | &gEfiCallerIdGuid,\r | |
132 | (VOID **)&PrivateData\r | |
133 | );\r | |
134 | if (EFI_ERROR (Status)) {\r | |
135 | return Status;\r | |
136 | }\r | |
137 | \r | |
138 | ASSERT (PrivateData->Signature == TCG_CONFIG_PRIVATE_DATA_SIGNATURE);\r | |
139 | \r | |
140 | gBS->UninstallMultipleProtocolInterfaces (\r | |
141 | ImageHandle,\r | |
142 | &gEfiCallerIdGuid,\r | |
143 | PrivateData,\r | |
144 | NULL\r | |
145 | );\r | |
146 | \r | |
147 | UninstallTcgConfigForm (PrivateData);\r | |
148 | \r | |
149 | return EFI_SUCCESS;\r | |
150 | }\r |