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1abfa4ce JY |
1 | /** @file\r |
2 | The module entry point for Tcg2 configuration module.\r | |
3 | \r | |
518b6f65 | 4 | Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>\r |
1abfa4ce JY |
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 "Tcg2ConfigImpl.h"\r | |
16 | \r | |
17 | extern TPM_INSTANCE_ID mTpmInstanceId[TPM_DEVICE_MAX + 1];\r | |
18 | \r | |
19 | /**\r | |
20 | Update default PCR banks data.\r | |
21 | \r | |
22 | @param[in] HiiPackage HII Package.\r | |
23 | @param[in] HiiPackageSize HII Package size.\r | |
24 | @param[in] PCRBanks PCR Banks data.\r | |
25 | \r | |
26 | **/\r | |
27 | VOID\r | |
28 | UpdateDefaultPCRBanks (\r | |
29 | IN VOID *HiiPackage,\r | |
30 | IN UINTN HiiPackageSize,\r | |
31 | IN UINT32 PCRBanks\r | |
32 | )\r | |
33 | {\r | |
34 | EFI_HII_PACKAGE_HEADER *HiiPackageHeader;\r | |
35 | EFI_IFR_OP_HEADER *IfrOpCodeHeader;\r | |
36 | EFI_IFR_CHECKBOX *IfrCheckBox;\r | |
37 | EFI_IFR_DEFAULT *IfrDefault;\r | |
38 | \r | |
39 | HiiPackageHeader = (EFI_HII_PACKAGE_HEADER *)HiiPackage;\r | |
40 | \r | |
41 | switch (HiiPackageHeader->Type) {\r | |
42 | case EFI_HII_PACKAGE_FORMS:\r | |
43 | IfrOpCodeHeader = (EFI_IFR_OP_HEADER *)(HiiPackageHeader + 1);\r | |
44 | while ((UINTN)IfrOpCodeHeader < (UINTN)HiiPackageHeader + HiiPackageHeader->Length) {\r | |
45 | switch (IfrOpCodeHeader->OpCode) {\r | |
46 | case EFI_IFR_CHECKBOX_OP:\r | |
47 | IfrCheckBox = (EFI_IFR_CHECKBOX *)IfrOpCodeHeader;\r | |
48 | if ((IfrCheckBox->Question.QuestionId >= KEY_TPM2_PCR_BANKS_REQUEST_0) && (IfrCheckBox->Question.QuestionId <= KEY_TPM2_PCR_BANKS_REQUEST_4)) {\r | |
49 | IfrDefault = (EFI_IFR_DEFAULT *)(IfrCheckBox + 1);\r | |
50 | ASSERT (IfrDefault->Header.OpCode == EFI_IFR_DEFAULT_OP);\r | |
51 | ASSERT (IfrDefault->Type == EFI_IFR_TYPE_BOOLEAN);\r | |
52 | IfrDefault->Value.b = (BOOLEAN)((PCRBanks >> (IfrCheckBox->Question.QuestionId - KEY_TPM2_PCR_BANKS_REQUEST_0)) & 0x1);\r | |
53 | }\r | |
54 | break;\r | |
55 | }\r | |
56 | IfrOpCodeHeader = (EFI_IFR_OP_HEADER *)((UINTN)IfrOpCodeHeader + IfrOpCodeHeader->Length);\r | |
57 | }\r | |
58 | break;\r | |
59 | }\r | |
60 | return ;\r | |
61 | }\r | |
62 | \r | |
63 | /**\r | |
64 | The entry point for Tcg2 configuration driver.\r | |
65 | \r | |
66 | @param[in] ImageHandle The image handle of the driver.\r | |
67 | @param[in] SystemTable The system table.\r | |
68 | \r | |
69 | @retval EFI_ALREADY_STARTED The driver already exists in system.\r | |
70 | @retval EFI_OUT_OF_RESOURCES Fail to execute entry point due to lack of resources.\r | |
71 | @retval EFI_SUCCES All the related protocols are installed on the driver.\r | |
72 | @retval Others Fail to install protocols as indicated.\r | |
73 | \r | |
74 | **/\r | |
75 | EFI_STATUS\r | |
76 | EFIAPI\r | |
77 | Tcg2ConfigDriverEntryPoint (\r | |
78 | IN EFI_HANDLE ImageHandle,\r | |
79 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
80 | )\r | |
81 | {\r | |
82 | EFI_STATUS Status;\r | |
83 | TCG2_CONFIG_PRIVATE_DATA *PrivateData;\r | |
84 | TCG2_CONFIGURATION Tcg2Configuration;\r | |
85 | TCG2_DEVICE_DETECTION Tcg2DeviceDetection;\r | |
86 | UINTN Index;\r | |
87 | UINTN DataSize;\r | |
88 | EDKII_VARIABLE_LOCK_PROTOCOL *VariableLockProtocol;\r | |
89 | UINT32 CurrentActivePCRBanks;\r | |
90 | \r | |
91 | Status = gBS->OpenProtocol (\r | |
92 | ImageHandle,\r | |
93 | &gEfiCallerIdGuid,\r | |
94 | NULL,\r | |
95 | ImageHandle,\r | |
96 | ImageHandle,\r | |
97 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
98 | );\r | |
99 | if (!EFI_ERROR (Status)) {\r | |
100 | return EFI_ALREADY_STARTED;\r | |
101 | }\r | |
102 | \r | |
103 | //\r | |
104 | // Create a private data structure.\r | |
105 | //\r | |
106 | PrivateData = AllocateCopyPool (sizeof (TCG2_CONFIG_PRIVATE_DATA), &mTcg2ConfigPrivateDateTemplate);\r | |
107 | ASSERT (PrivateData != NULL);\r | |
108 | mTcg2ConfigPrivateDate = PrivateData;\r | |
109 | //\r | |
110 | // Install private GUID.\r | |
111 | // \r | |
112 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
113 | &ImageHandle,\r | |
114 | &gEfiCallerIdGuid,\r | |
115 | PrivateData,\r | |
116 | NULL\r | |
117 | );\r | |
118 | ASSERT_EFI_ERROR (Status);\r | |
119 | \r | |
120 | Status = gBS->LocateProtocol (&gEfiTcg2ProtocolGuid, NULL, (VOID **) &PrivateData->Tcg2Protocol);\r | |
121 | ASSERT_EFI_ERROR (Status);\r | |
122 | \r | |
123 | PrivateData->ProtocolCapability.Size = sizeof(PrivateData->ProtocolCapability);\r | |
124 | Status = PrivateData->Tcg2Protocol->GetCapability (\r | |
125 | PrivateData->Tcg2Protocol,\r | |
126 | &PrivateData->ProtocolCapability\r | |
127 | );\r | |
128 | ASSERT_EFI_ERROR (Status);\r | |
129 | \r | |
130 | DataSize = sizeof(Tcg2Configuration);\r | |
131 | Status = gRT->GetVariable (\r | |
132 | TCG2_STORAGE_NAME,\r | |
133 | &gTcg2ConfigFormSetGuid,\r | |
134 | NULL,\r | |
135 | &DataSize,\r | |
136 | &Tcg2Configuration\r | |
137 | );\r | |
138 | if (EFI_ERROR (Status)) {\r | |
139 | //\r | |
140 | // Variable not ready, set default value\r | |
141 | //\r | |
142 | Tcg2Configuration.TpmDevice = TPM_DEVICE_DEFAULT;\r | |
143 | }\r | |
144 | \r | |
145 | //\r | |
146 | // Validation\r | |
147 | //\r | |
148 | if ((Tcg2Configuration.TpmDevice > TPM_DEVICE_MAX) || (Tcg2Configuration.TpmDevice < TPM_DEVICE_MIN)) {\r | |
149 | Tcg2Configuration.TpmDevice = TPM_DEVICE_DEFAULT;\r | |
150 | }\r | |
151 | \r | |
152 | //\r | |
153 | // Set value for Tcg2CurrentActivePCRBanks\r | |
154 | // Search Tcg2ConfigBin[] and update default value there\r | |
155 | //\r | |
156 | Status = PrivateData->Tcg2Protocol->GetActivePcrBanks (PrivateData->Tcg2Protocol, &CurrentActivePCRBanks);\r | |
157 | ASSERT_EFI_ERROR (Status);\r | |
158 | PrivateData->PCRBanksDesired = CurrentActivePCRBanks;\r | |
159 | UpdateDefaultPCRBanks (Tcg2ConfigBin + sizeof(UINT32), ReadUnaligned32((UINT32 *)Tcg2ConfigBin) - sizeof(UINT32), CurrentActivePCRBanks);\r | |
160 | \r | |
1abfa4ce JY |
161 | //\r |
162 | // Sync data from PCD to variable, so that we do not need detect again in S3 phase.\r | |
163 | //\r | |
164 | Tcg2DeviceDetection.TpmDeviceDetected = TPM_DEVICE_NULL;\r | |
165 | for (Index = 0; Index < sizeof(mTpmInstanceId)/sizeof(mTpmInstanceId[0]); Index++) {\r | |
166 | if (CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &mTpmInstanceId[Index].TpmInstanceGuid)) {\r | |
167 | Tcg2DeviceDetection.TpmDeviceDetected = mTpmInstanceId[Index].TpmDevice;\r | |
168 | break;\r | |
169 | }\r | |
170 | }\r | |
171 | \r | |
172 | PrivateData->TpmDeviceDetected = Tcg2DeviceDetection.TpmDeviceDetected;\r | |
518b6f65 | 173 | Tcg2Configuration.TpmDevice = Tcg2DeviceDetection.TpmDeviceDetected;\r |
1abfa4ce JY |
174 | \r |
175 | //\r | |
176 | // Save to variable so platform driver can get it.\r | |
177 | //\r | |
178 | Status = gRT->SetVariable (\r | |
179 | TCG2_DEVICE_DETECTION_NAME,\r | |
180 | &gTcg2ConfigFormSetGuid,\r | |
181 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
182 | sizeof(Tcg2DeviceDetection),\r | |
183 | &Tcg2DeviceDetection\r | |
184 | );\r | |
185 | if (EFI_ERROR (Status)) {\r | |
186 | DEBUG ((EFI_D_ERROR, "Tcg2ConfigDriver: Fail to set TCG2_DEVICE_DETECTION_NAME\n"));\r | |
187 | Status = gRT->SetVariable (\r | |
188 | TCG2_DEVICE_DETECTION_NAME,\r | |
189 | &gTcg2ConfigFormSetGuid,\r | |
190 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
191 | 0,\r | |
192 | NULL\r | |
193 | );\r | |
194 | ASSERT_EFI_ERROR (Status);\r | |
195 | }\r | |
196 | \r | |
518b6f65 JY |
197 | //\r |
198 | // Save to variable so platform driver can get it.\r | |
199 | //\r | |
200 | Status = gRT->SetVariable (\r | |
201 | TCG2_STORAGE_NAME,\r | |
202 | &gTcg2ConfigFormSetGuid,\r | |
203 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r | |
204 | sizeof(Tcg2Configuration),\r | |
205 | &Tcg2Configuration\r | |
206 | );\r | |
207 | if (EFI_ERROR (Status)) {\r | |
208 | DEBUG ((EFI_D_ERROR, "Tcg2ConfigDriver: Fail to set TCG2_STORAGE_NAME\n"));\r | |
209 | }\r | |
210 | \r | |
1abfa4ce JY |
211 | //\r |
212 | // We should lock Tcg2DeviceDetection, because it contains information needed at S3.\r | |
213 | //\r | |
214 | Status = gBS->LocateProtocol (&gEdkiiVariableLockProtocolGuid, NULL, (VOID **)&VariableLockProtocol);\r | |
215 | if (!EFI_ERROR (Status)) {\r | |
216 | Status = VariableLockProtocol->RequestToLock (\r | |
217 | VariableLockProtocol,\r | |
218 | TCG2_DEVICE_DETECTION_NAME,\r | |
219 | &gTcg2ConfigFormSetGuid\r | |
220 | );\r | |
221 | ASSERT_EFI_ERROR (Status);\r | |
222 | }\r | |
223 | \r | |
224 | //\r | |
225 | // Install Tcg2 configuration form\r | |
226 | //\r | |
227 | Status = InstallTcg2ConfigForm (PrivateData);\r | |
228 | if (EFI_ERROR (Status)) {\r | |
229 | goto ErrorExit;\r | |
230 | }\r | |
231 | \r | |
232 | return EFI_SUCCESS;\r | |
233 | \r | |
234 | ErrorExit:\r | |
235 | if (PrivateData != NULL) {\r | |
236 | UninstallTcg2ConfigForm (PrivateData);\r | |
237 | } \r | |
238 | \r | |
239 | return Status;\r | |
240 | }\r | |
241 | \r | |
242 | /**\r | |
243 | Unload the Tcg2 configuration form.\r | |
244 | \r | |
245 | @param[in] ImageHandle The driver's image handle.\r | |
246 | \r | |
247 | @retval EFI_SUCCESS The Tcg2 configuration form is unloaded.\r | |
248 | @retval Others Failed to unload the form.\r | |
249 | \r | |
250 | **/\r | |
251 | EFI_STATUS\r | |
252 | EFIAPI\r | |
253 | Tcg2ConfigDriverUnload (\r | |
254 | IN EFI_HANDLE ImageHandle\r | |
255 | )\r | |
256 | {\r | |
257 | EFI_STATUS Status;\r | |
258 | TCG2_CONFIG_PRIVATE_DATA *PrivateData;\r | |
259 | \r | |
260 | Status = gBS->HandleProtocol (\r | |
261 | ImageHandle,\r | |
262 | &gEfiCallerIdGuid,\r | |
263 | (VOID **) &PrivateData\r | |
264 | ); \r | |
265 | if (EFI_ERROR (Status)) {\r | |
266 | return Status; \r | |
267 | }\r | |
268 | \r | |
269 | ASSERT (PrivateData->Signature == TCG2_CONFIG_PRIVATE_DATA_SIGNATURE);\r | |
270 | \r | |
271 | gBS->UninstallMultipleProtocolInterfaces (\r | |
272 | &ImageHandle,\r | |
273 | &gEfiCallerIdGuid,\r | |
274 | PrivateData,\r | |
275 | NULL\r | |
276 | );\r | |
277 | \r | |
278 | UninstallTcg2ConfigForm (PrivateData);\r | |
279 | \r | |
280 | return EFI_SUCCESS;\r | |
281 | }\r |