]>
Commit | Line | Data |
---|---|---|
c1d93242 JY |
1 | /** @file\r |
2 | The module entry point for TrEE configuration module.\r | |
3 | \r | |
4 | Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>\r | |
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 "TrEEConfigImpl.h"\r | |
16 | \r | |
17 | extern TPM_INSTANCE_ID mTpmInstanceId[TPM_DEVICE_MAX + 1];\r | |
18 | \r | |
19 | /**\r | |
20 | The entry point for TrEE configuration driver.\r | |
21 | \r | |
22 | @param[in] ImageHandle The image handle of the driver.\r | |
23 | @param[in] SystemTable The system table.\r | |
24 | \r | |
25 | @retval EFI_ALREADY_STARTED The driver already exists in system.\r | |
26 | @retval EFI_OUT_OF_RESOURCES Fail to execute entry point due to lack of resources.\r | |
27 | @retval EFI_SUCCES All the related protocols are installed on the driver.\r | |
28 | @retval Others Fail to install protocols as indicated.\r | |
29 | \r | |
30 | **/\r | |
31 | EFI_STATUS\r | |
32 | EFIAPI\r | |
33 | TrEEConfigDriverEntryPoint (\r | |
34 | IN EFI_HANDLE ImageHandle,\r | |
35 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
36 | )\r | |
37 | {\r | |
38 | EFI_STATUS Status;\r | |
39 | TREE_CONFIG_PRIVATE_DATA *PrivateData;\r | |
40 | TREE_CONFIGURATION TrEEConfiguration;\r | |
5437d457 | 41 | TREE_DEVICE_DETECTION TrEEDeviceDetection;\r |
c1d93242 JY |
42 | UINTN Index;\r |
43 | UINTN DataSize;\r | |
5437d457 | 44 | EDKII_VARIABLE_LOCK_PROTOCOL *VariableLockProtocol;\r |
c1d93242 JY |
45 | \r |
46 | Status = gBS->OpenProtocol (\r | |
47 | ImageHandle,\r | |
48 | &gEfiCallerIdGuid,\r | |
49 | NULL,\r | |
50 | ImageHandle,\r | |
51 | ImageHandle,\r | |
52 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
53 | );\r | |
54 | if (!EFI_ERROR (Status)) {\r | |
55 | return EFI_ALREADY_STARTED;\r | |
56 | }\r | |
57 | \r | |
58 | //\r | |
59 | // Create a private data structure.\r | |
60 | //\r | |
61 | PrivateData = AllocateCopyPool (sizeof (TREE_CONFIG_PRIVATE_DATA), &mTrEEConfigPrivateDateTemplate);\r | |
62 | ASSERT (PrivateData != NULL);\r | |
63 | \r | |
64 | //\r | |
65 | // Install private GUID.\r | |
66 | // \r | |
67 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
68 | &ImageHandle,\r | |
69 | &gEfiCallerIdGuid,\r | |
70 | PrivateData,\r | |
71 | NULL\r | |
72 | );\r | |
73 | ASSERT_EFI_ERROR (Status);\r | |
74 | \r | |
75 | DataSize = sizeof(TrEEConfiguration);\r | |
76 | Status = gRT->GetVariable (\r | |
77 | TREE_STORAGE_NAME,\r | |
78 | &gTrEEConfigFormSetGuid,\r | |
79 | NULL,\r | |
80 | &DataSize,\r | |
81 | &TrEEConfiguration\r | |
82 | );\r | |
83 | if (EFI_ERROR (Status)) {\r | |
5437d457 JY |
84 | //\r |
85 | // Variable not ready, set default value\r | |
86 | //\r | |
87 | TrEEConfiguration.TpmDevice = TPM_DEVICE_DEFAULT;\r | |
c1d93242 | 88 | }\r |
5437d457 | 89 | \r |
c1d93242 | 90 | //\r |
5437d457 | 91 | // Validation\r |
c1d93242 | 92 | //\r |
5437d457 JY |
93 | if ((TrEEConfiguration.TpmDevice > TPM_DEVICE_MAX) || (TrEEConfiguration.TpmDevice < TPM_DEVICE_MIN)) {\r |
94 | TrEEConfiguration.TpmDevice = TPM_DEVICE_DEFAULT;\r | |
95 | }\r | |
c1d93242 JY |
96 | \r |
97 | //\r | |
5437d457 | 98 | // Save to variable so platform driver can get it.\r |
c1d93242 | 99 | //\r |
5437d457 JY |
100 | Status = gRT->SetVariable (\r |
101 | TREE_STORAGE_NAME,\r | |
102 | &gTrEEConfigFormSetGuid,\r | |
103 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
104 | sizeof(TrEEConfiguration),\r | |
105 | &TrEEConfiguration\r | |
106 | );\r | |
107 | if (EFI_ERROR (Status)) {\r | |
108 | DEBUG ((EFI_D_ERROR, "TrEEConfigDriver: Fail to set TREE_STORAGE_NAME\n"));\r | |
109 | }\r | |
c1d93242 JY |
110 | \r |
111 | //\r | |
5437d457 | 112 | // Sync data from PCD to variable, so that we do not need detect again in S3 phase.\r |
c1d93242 | 113 | //\r |
5437d457 | 114 | TrEEDeviceDetection.TpmDeviceDetected = TPM_DEVICE_NULL;\r |
c1d93242 JY |
115 | for (Index = 0; Index < sizeof(mTpmInstanceId)/sizeof(mTpmInstanceId[0]); Index++) {\r |
116 | if (CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &mTpmInstanceId[Index].TpmInstanceGuid)) {\r | |
5437d457 | 117 | TrEEDeviceDetection.TpmDeviceDetected = mTpmInstanceId[Index].TpmDevice;\r |
c1d93242 JY |
118 | break;\r |
119 | }\r | |
120 | }\r | |
121 | \r | |
5437d457 JY |
122 | PrivateData->TpmDeviceDetected = TrEEDeviceDetection.TpmDeviceDetected;\r |
123 | \r | |
c1d93242 JY |
124 | //\r |
125 | // Save to variable so platform driver can get it.\r | |
126 | //\r | |
127 | Status = gRT->SetVariable (\r | |
5437d457 | 128 | TREE_DEVICE_DETECTION_NAME,\r |
c1d93242 | 129 | &gTrEEConfigFormSetGuid,\r |
207256b7 | 130 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r |
5437d457 JY |
131 | sizeof(TrEEDeviceDetection),\r |
132 | &TrEEDeviceDetection\r | |
c1d93242 | 133 | );\r |
5437d457 JY |
134 | if (EFI_ERROR (Status)) {\r |
135 | DEBUG ((EFI_D_ERROR, "TrEEConfigDriver: Fail to set TREE_DEVICE_DETECTION_NAME\n"));\r | |
136 | Status = gRT->SetVariable (\r | |
137 | TREE_DEVICE_DETECTION_NAME,\r | |
138 | &gTrEEConfigFormSetGuid,\r | |
139 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
140 | 0,\r | |
141 | NULL\r | |
142 | );\r | |
143 | ASSERT_EFI_ERROR (Status);\r | |
144 | }\r | |
145 | \r | |
146 | //\r | |
147 | // We should lock TrEEDeviceDetection, because it contains information needed at S3.\r | |
148 | //\r | |
149 | Status = gBS->LocateProtocol (&gEdkiiVariableLockProtocolGuid, NULL, (VOID **)&VariableLockProtocol);\r | |
150 | if (!EFI_ERROR (Status)) {\r | |
151 | Status = VariableLockProtocol->RequestToLock (\r | |
152 | VariableLockProtocol,\r | |
153 | TREE_DEVICE_DETECTION_NAME,\r | |
154 | &gTrEEConfigFormSetGuid\r | |
155 | );\r | |
156 | ASSERT_EFI_ERROR (Status);\r | |
157 | }\r | |
c1d93242 JY |
158 | \r |
159 | //\r | |
160 | // Install TrEE configuration form\r | |
161 | //\r | |
162 | Status = InstallTrEEConfigForm (PrivateData);\r | |
163 | if (EFI_ERROR (Status)) {\r | |
164 | goto ErrorExit;\r | |
165 | }\r | |
166 | \r | |
167 | return EFI_SUCCESS;\r | |
168 | \r | |
169 | ErrorExit:\r | |
170 | if (PrivateData != NULL) {\r | |
171 | UninstallTrEEConfigForm (PrivateData);\r | |
172 | } \r | |
173 | \r | |
174 | return Status;\r | |
175 | }\r | |
176 | \r | |
177 | /**\r | |
178 | Unload the TrEE configuration form.\r | |
179 | \r | |
180 | @param[in] ImageHandle The driver's image handle.\r | |
181 | \r | |
182 | @retval EFI_SUCCESS The TrEE configuration form is unloaded.\r | |
183 | @retval Others Failed to unload the form.\r | |
184 | \r | |
185 | **/\r | |
186 | EFI_STATUS\r | |
187 | EFIAPI\r | |
188 | TrEEConfigDriverUnload (\r | |
189 | IN EFI_HANDLE ImageHandle\r | |
190 | )\r | |
191 | {\r | |
192 | EFI_STATUS Status;\r | |
193 | TREE_CONFIG_PRIVATE_DATA *PrivateData;\r | |
194 | \r | |
195 | Status = gBS->HandleProtocol (\r | |
196 | ImageHandle,\r | |
197 | &gEfiCallerIdGuid,\r | |
198 | (VOID **) &PrivateData\r | |
199 | ); \r | |
200 | if (EFI_ERROR (Status)) {\r | |
201 | return Status; \r | |
202 | }\r | |
203 | \r | |
204 | ASSERT (PrivateData->Signature == TREE_CONFIG_PRIVATE_DATA_SIGNATURE);\r | |
205 | \r | |
206 | gBS->UninstallMultipleProtocolInterfaces (\r | |
207 | &ImageHandle,\r | |
208 | &gEfiCallerIdGuid,\r | |
209 | PrivateData,\r | |
210 | NULL\r | |
211 | );\r | |
212 | \r | |
213 | UninstallTrEEConfigForm (PrivateData);\r | |
214 | \r | |
215 | return EFI_SUCCESS;\r | |
216 | }\r |