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1 | /** @file\r | |
2 | Get SEC platform information(2) PPI and reinstall it.\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r | |
5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
6 | \r | |
7 | **/\r | |
8 | \r | |
9 | #include "SecMain.h"\r | |
10 | \r | |
11 | EFI_SEC_PLATFORM_INFORMATION_PPI mSecPlatformInformation = {\r | |
12 | SecPlatformInformationBist\r | |
13 | };\r | |
14 | \r | |
15 | EFI_PEI_PPI_DESCRIPTOR mPeiSecPlatformInformation = {\r | |
16 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
17 | &gEfiSecPlatformInformationPpiGuid,\r | |
18 | &mSecPlatformInformation\r | |
19 | };\r | |
20 | \r | |
21 | EFI_SEC_PLATFORM_INFORMATION2_PPI mSecPlatformInformation2 = {\r | |
22 | SecPlatformInformation2Bist\r | |
23 | };\r | |
24 | \r | |
25 | EFI_PEI_PPI_DESCRIPTOR mPeiSecPlatformInformation2 = {\r | |
26 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
27 | &gEfiSecPlatformInformation2PpiGuid,\r | |
28 | &mSecPlatformInformation2\r | |
29 | };\r | |
30 | \r | |
31 | /**\r | |
32 | Worker function to parse CPU BIST information from Guided HOB.\r | |
33 | \r | |
34 | @param[in, out] StructureSize Pointer to the variable describing size of the input buffer.\r | |
35 | @param[in, out] StructureBuffer Pointer to the buffer save CPU BIST information.\r | |
36 | \r | |
37 | @retval EFI_SUCCESS The data was successfully returned.\r | |
38 | @retval EFI_BUFFER_TOO_SMALL The buffer was too small.\r | |
39 | \r | |
40 | **/\r | |
41 | EFI_STATUS\r | |
42 | GetBistFromHob (\r | |
43 | IN OUT UINT64 *StructureSize,\r | |
44 | IN OUT VOID *StructureBuffer\r | |
45 | )\r | |
46 | {\r | |
47 | EFI_HOB_GUID_TYPE *GuidHob;\r | |
48 | VOID *DataInHob;\r | |
49 | UINTN DataSize;\r | |
50 | \r | |
51 | GuidHob = GetFirstGuidHob (&gEfiCallerIdGuid);\r | |
52 | if (GuidHob == NULL) {\r | |
53 | *StructureSize = 0;\r | |
54 | return EFI_SUCCESS;\r | |
55 | }\r | |
56 | \r | |
57 | DataInHob = GET_GUID_HOB_DATA (GuidHob);\r | |
58 | DataSize = GET_GUID_HOB_DATA_SIZE (GuidHob);\r | |
59 | \r | |
60 | //\r | |
61 | // return the information from BistHob\r | |
62 | //\r | |
63 | if ((*StructureSize) < (UINT64) DataSize) {\r | |
64 | *StructureSize = (UINT64) DataSize;\r | |
65 | return EFI_BUFFER_TOO_SMALL;\r | |
66 | }\r | |
67 | \r | |
68 | *StructureSize = (UINT64) DataSize;\r | |
69 | CopyMem (StructureBuffer, DataInHob, DataSize);\r | |
70 | return EFI_SUCCESS;\r | |
71 | }\r | |
72 | \r | |
73 | /**\r | |
74 | Implementation of the PlatformInformation service in EFI_SEC_PLATFORM_INFORMATION_PPI.\r | |
75 | \r | |
76 | @param[in] PeiServices Pointer to the PEI Services Table.\r | |
77 | @param[in, out] StructureSize Pointer to the variable describing size of the input buffer.\r | |
78 | @param[out] PlatformInformationRecord Pointer to the EFI_SEC_PLATFORM_INFORMATION_RECORD.\r | |
79 | \r | |
80 | @retval EFI_SUCCESS The data was successfully returned.\r | |
81 | @retval EFI_BUFFER_TOO_SMALL The buffer was too small.\r | |
82 | \r | |
83 | **/\r | |
84 | EFI_STATUS\r | |
85 | EFIAPI\r | |
86 | SecPlatformInformationBist (\r | |
87 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
88 | IN OUT UINT64 *StructureSize,\r | |
89 | OUT EFI_SEC_PLATFORM_INFORMATION_RECORD *PlatformInformationRecord\r | |
90 | )\r | |
91 | {\r | |
92 | return GetBistFromHob (StructureSize, PlatformInformationRecord);\r | |
93 | }\r | |
94 | \r | |
95 | /**\r | |
96 | Implementation of the PlatformInformation2 service in EFI_SEC_PLATFORM_INFORMATION2_PPI.\r | |
97 | \r | |
98 | @param[in] PeiServices The pointer to the PEI Services Table.\r | |
99 | @param[in, out] StructureSize The pointer to the variable describing size of the input buffer.\r | |
100 | @param[out] PlatformInformationRecord2 The pointer to the EFI_SEC_PLATFORM_INFORMATION_RECORD2.\r | |
101 | \r | |
102 | @retval EFI_SUCCESS The data was successfully returned.\r | |
103 | @retval EFI_BUFFER_TOO_SMALL The buffer was too small. The current buffer size needed to\r | |
104 | hold the record is returned in StructureSize.\r | |
105 | \r | |
106 | **/\r | |
107 | EFI_STATUS\r | |
108 | EFIAPI\r | |
109 | SecPlatformInformation2Bist (\r | |
110 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
111 | IN OUT UINT64 *StructureSize,\r | |
112 | OUT EFI_SEC_PLATFORM_INFORMATION_RECORD2 *PlatformInformationRecord2\r | |
113 | )\r | |
114 | {\r | |
115 | return GetBistFromHob (StructureSize, PlatformInformationRecord2);\r | |
116 | }\r | |
117 | \r | |
118 | /**\r | |
119 | Worker function to get CPUs' BIST by calling SecPlatformInformationPpi\r | |
120 | or SecPlatformInformation2Ppi.\r | |
121 | \r | |
122 | @param[in] PeiServices Pointer to PEI Services Table\r | |
123 | @param[in] Guid PPI Guid\r | |
124 | @param[out] PpiDescriptor Return a pointer to instance of the\r | |
125 | EFI_PEI_PPI_DESCRIPTOR\r | |
126 | @param[out] BistInformationData Pointer to BIST information data\r | |
127 | @param[out] BistInformationSize Return the size in bytes of BIST information\r | |
128 | \r | |
129 | @retval EFI_SUCCESS Retrieve of the BIST data successfully\r | |
130 | @retval EFI_NOT_FOUND No sec platform information(2) ppi export\r | |
131 | @retval EFI_DEVICE_ERROR Failed to get CPU Information\r | |
132 | \r | |
133 | **/\r | |
134 | EFI_STATUS\r | |
135 | GetBistInfoFromPpi (\r | |
136 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
137 | IN CONST EFI_GUID *Guid,\r | |
138 | OUT EFI_PEI_PPI_DESCRIPTOR **PpiDescriptor,\r | |
139 | OUT VOID **BistInformationData,\r | |
140 | OUT UINT64 *BistInformationSize OPTIONAL\r | |
141 | )\r | |
142 | {\r | |
143 | EFI_STATUS Status;\r | |
144 | EFI_SEC_PLATFORM_INFORMATION2_PPI *SecPlatformInformation2Ppi;\r | |
145 | EFI_SEC_PLATFORM_INFORMATION_RECORD2 *SecPlatformInformation2;\r | |
146 | UINT64 InformationSize;\r | |
147 | \r | |
148 | Status = PeiServicesLocatePpi (\r | |
149 | Guid, // GUID\r | |
150 | 0, // INSTANCE\r | |
151 | PpiDescriptor, // EFI_PEI_PPI_DESCRIPTOR\r | |
152 | (VOID **)&SecPlatformInformation2Ppi // PPI\r | |
153 | );\r | |
154 | if (Status == EFI_NOT_FOUND) {\r | |
155 | return EFI_NOT_FOUND;\r | |
156 | }\r | |
157 | \r | |
158 | if (Status == EFI_SUCCESS) {\r | |
159 | //\r | |
160 | // Get the size of the sec platform information2(BSP/APs' BIST data)\r | |
161 | //\r | |
162 | InformationSize = 0;\r | |
163 | SecPlatformInformation2 = NULL;\r | |
164 | Status = SecPlatformInformation2Ppi->PlatformInformation2 (\r | |
165 | PeiServices,\r | |
166 | &InformationSize,\r | |
167 | SecPlatformInformation2\r | |
168 | );\r | |
169 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
170 | Status = PeiServicesAllocatePool (\r | |
171 | (UINTN) InformationSize,\r | |
172 | (VOID **) &SecPlatformInformation2\r | |
173 | );\r | |
174 | if (Status == EFI_SUCCESS) {\r | |
175 | //\r | |
176 | // Retrieve BIST data\r | |
177 | //\r | |
178 | Status = SecPlatformInformation2Ppi->PlatformInformation2 (\r | |
179 | PeiServices,\r | |
180 | &InformationSize,\r | |
181 | SecPlatformInformation2\r | |
182 | );\r | |
183 | if (Status == EFI_SUCCESS) {\r | |
184 | *BistInformationData = SecPlatformInformation2;\r | |
185 | if (BistInformationSize != NULL) {\r | |
186 | *BistInformationSize = InformationSize;\r | |
187 | }\r | |
188 | return EFI_SUCCESS;\r | |
189 | }\r | |
190 | }\r | |
191 | }\r | |
192 | }\r | |
193 | \r | |
194 | return EFI_DEVICE_ERROR;\r | |
195 | }\r | |
196 | \r | |
197 | /**\r | |
198 | Get CPUs' BIST by calling SecPlatformInformationPpi/SecPlatformInformation2Ppi.\r | |
199 | \r | |
200 | **/\r | |
201 | VOID\r | |
202 | RepublishSecPlatformInformationPpi (\r | |
203 | VOID\r | |
204 | )\r | |
205 | {\r | |
206 | EFI_STATUS Status;\r | |
207 | CONST EFI_PEI_SERVICES **PeiServices;\r | |
208 | UINT64 BistInformationSize;\r | |
209 | VOID *BistInformationData;\r | |
210 | EFI_PEI_PPI_DESCRIPTOR *SecInformationDescriptor;\r | |
211 | \r | |
212 | PeiServices = GetPeiServicesTablePointer ();\r | |
213 | Status = GetBistInfoFromPpi (\r | |
214 | PeiServices,\r | |
215 | &gEfiSecPlatformInformation2PpiGuid,\r | |
216 | &SecInformationDescriptor,\r | |
217 | &BistInformationData,\r | |
218 | &BistInformationSize\r | |
219 | );\r | |
220 | if (Status == EFI_SUCCESS) {\r | |
221 | BuildGuidDataHob (\r | |
222 | &gEfiCallerIdGuid,\r | |
223 | BistInformationData,\r | |
224 | (UINTN) BistInformationSize\r | |
225 | );\r | |
226 | //\r | |
227 | // The old SecPlatformInformation2 data is on temporary memory.\r | |
228 | // After memory discovered, we should never get it from temporary memory,\r | |
229 | // or the data will be crashed. So, we reinstall SecPlatformInformation2 PPI here.\r | |
230 | //\r | |
231 | Status = PeiServicesReInstallPpi (\r | |
232 | SecInformationDescriptor,\r | |
233 | &mPeiSecPlatformInformation2\r | |
234 | );\r | |
235 | } if (Status == EFI_NOT_FOUND) {\r | |
236 | Status = GetBistInfoFromPpi (\r | |
237 | PeiServices,\r | |
238 | &gEfiSecPlatformInformationPpiGuid,\r | |
239 | &SecInformationDescriptor,\r | |
240 | &BistInformationData,\r | |
241 | &BistInformationSize\r | |
242 | );\r | |
243 | if (Status == EFI_SUCCESS) {\r | |
244 | BuildGuidDataHob (\r | |
245 | &gEfiCallerIdGuid,\r | |
246 | BistInformationData,\r | |
247 | (UINTN) BistInformationSize\r | |
248 | );\r | |
249 | //\r | |
250 | // The old SecPlatformInformation data is on temporary memory.\r | |
251 | // After memory discovered, we should never get it from temporary memory,\r | |
252 | // or the data will be crashed. So, we reinstall SecPlatformInformation PPI here.\r | |
253 | //\r | |
254 | Status = PeiServicesReInstallPpi (\r | |
255 | SecInformationDescriptor,\r | |
256 | &mPeiSecPlatformInformation\r | |
257 | );\r | |
258 | } else if (Status == EFI_NOT_FOUND) {\r | |
259 | return;\r | |
260 | }\r | |
261 | }\r | |
262 | \r | |
263 | ASSERT_EFI_ERROR(Status);\r | |
264 | }\r |