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0c18794e | 1 | /** @file\r |
2 | The module entry point for Tcg configuration module.\r | |
3 | \r | |
c1d93242 | 4 | Copyright (c) 2011 - 2013, Intel Corporation. All rights reserved.<BR>\r |
0c18794e | 5 | This program and the accompanying materials \r |
6 | are licensed and made available under the terms and conditions of the BSD License \r | |
7 | which accompanies this distribution. The full text of the license may be found at \r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "TcgConfigImpl.h"\r | |
c1d93242 | 16 | #include <Guid/TpmInstance.h>\r |
0c18794e | 17 | \r |
0c18794e | 18 | /**\r |
19 | The entry point for Tcg configuration driver.\r | |
20 | \r | |
21 | @param[in] ImageHandle The image handle of the driver.\r | |
22 | @param[in] SystemTable The system table.\r | |
23 | \r | |
24 | @retval EFI_ALREADY_STARTED The driver already exists in system.\r | |
25 | @retval EFI_OUT_OF_RESOURCES Fail to execute entry point due to lack of resources.\r | |
26 | @retval EFI_SUCCES All the related protocols are installed on the driver.\r | |
27 | @retval Others Fail to install protocols as indicated.\r | |
28 | \r | |
29 | **/\r | |
30 | EFI_STATUS\r | |
31 | EFIAPI\r | |
32 | TcgConfigDriverEntryPoint (\r | |
33 | IN EFI_HANDLE ImageHandle,\r | |
34 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
35 | )\r | |
36 | {\r | |
37 | EFI_STATUS Status;\r | |
38 | TCG_CONFIG_PRIVATE_DATA *PrivateData;\r | |
39 | EFI_TCG_PROTOCOL *TcgProtocol;\r | |
40 | \r | |
c1d93242 JY |
41 | if (!CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceTpm12Guid)){\r |
42 | DEBUG ((EFI_D_ERROR, "No TPM12 instance required!\n"));\r | |
43 | return EFI_UNSUPPORTED;\r | |
44 | }\r | |
45 | \r | |
0c18794e | 46 | Status = TisPcRequestUseTpm ((TIS_TPM_HANDLE) (UINTN) TPM_BASE_ADDRESS);\r |
47 | if (EFI_ERROR (Status)) {\r | |
48 | DEBUG ((EFI_D_ERROR, "TPM not detected!\n"));\r | |
49 | return Status;\r | |
50 | }\r | |
51 | \r | |
52 | Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **) &TcgProtocol);\r | |
53 | if (EFI_ERROR (Status)) {\r | |
54 | TcgProtocol = NULL;\r | |
55 | }\r | |
56 | \r | |
57 | Status = gBS->OpenProtocol (\r | |
58 | ImageHandle,\r | |
a0c56a82 | 59 | &gEfiCallerIdGuid,\r |
0c18794e | 60 | NULL,\r |
61 | ImageHandle,\r | |
62 | ImageHandle,\r | |
63 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
64 | );\r | |
65 | if (!EFI_ERROR (Status)) {\r | |
66 | return EFI_ALREADY_STARTED;\r | |
67 | }\r | |
68 | \r | |
69 | //\r | |
70 | // Create a private data structure.\r | |
71 | //\r | |
72 | PrivateData = AllocateCopyPool (sizeof (TCG_CONFIG_PRIVATE_DATA), &mTcgConfigPrivateDateTemplate);\r | |
73 | if (PrivateData == NULL) {\r | |
74 | return EFI_OUT_OF_RESOURCES;\r | |
75 | }\r | |
76 | \r | |
77 | PrivateData->TcgProtocol = TcgProtocol;\r | |
81b7a609 | 78 | PrivateData->HideTpm = (BOOLEAN) (PcdGetBool (PcdHideTpmSupport) && PcdGetBool (PcdHideTpm));\r |
0c18794e | 79 | \r |
80 | //\r | |
81 | // Install TCG configuration form\r | |
82 | //\r | |
83 | Status = InstallTcgConfigForm (PrivateData);\r | |
84 | if (EFI_ERROR (Status)) {\r | |
85 | goto ErrorExit;\r | |
86 | }\r | |
87 | \r | |
88 | //\r | |
89 | // Install private GUID.\r | |
90 | // \r | |
91 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
92 | &ImageHandle,\r | |
a0c56a82 | 93 | &gEfiCallerIdGuid,\r |
0c18794e | 94 | PrivateData,\r |
95 | NULL\r | |
96 | );\r | |
97 | \r | |
98 | if (EFI_ERROR (Status)) {\r | |
99 | goto ErrorExit;\r | |
100 | }\r | |
101 | \r | |
102 | return EFI_SUCCESS;\r | |
103 | \r | |
104 | ErrorExit:\r | |
105 | if (PrivateData != NULL) {\r | |
106 | UninstallTcgConfigForm (PrivateData);\r | |
107 | } \r | |
108 | \r | |
109 | return Status;\r | |
110 | }\r | |
111 | \r | |
112 | /**\r | |
113 | Unload the Tcg configuration form.\r | |
114 | \r | |
115 | @param[in] ImageHandle The driver's image handle.\r | |
116 | \r | |
117 | @retval EFI_SUCCESS The Tcg configuration form is unloaded.\r | |
118 | @retval Others Failed to unload the form.\r | |
119 | \r | |
120 | **/\r | |
121 | EFI_STATUS\r | |
122 | EFIAPI\r | |
123 | TcgConfigDriverUnload (\r | |
124 | IN EFI_HANDLE ImageHandle\r | |
125 | )\r | |
126 | {\r | |
127 | EFI_STATUS Status;\r | |
128 | TCG_CONFIG_PRIVATE_DATA *PrivateData;\r | |
129 | \r | |
130 | Status = gBS->HandleProtocol (\r | |
131 | ImageHandle,\r | |
a0c56a82 | 132 | &gEfiCallerIdGuid,\r |
0c18794e | 133 | (VOID **) &PrivateData\r |
134 | ); \r | |
135 | if (EFI_ERROR (Status)) {\r | |
136 | return Status; \r | |
137 | }\r | |
138 | \r | |
139 | ASSERT (PrivateData->Signature == TCG_CONFIG_PRIVATE_DATA_SIGNATURE);\r | |
140 | \r | |
141 | gBS->UninstallMultipleProtocolInterfaces (\r | |
142 | &ImageHandle,\r | |
a0c56a82 | 143 | &gEfiCallerIdGuid,\r |
0c18794e | 144 | PrivateData,\r |
145 | NULL\r | |
146 | );\r | |
147 | \r | |
148 | UninstallTcgConfigForm (PrivateData);\r | |
149 | \r | |
150 | return EFI_SUCCESS;\r | |
151 | }\r |