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615c6dd0 | 1 | /** @file\r |
b1f6a7c6 | 2 | EFI PEI Core PPI services\r |
d1102dba LG |
3 | \r |
4 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r | |
cd5ebaa0 | 5 | This program and the accompanying materials\r |
58dcdada | 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 | |
192f6d4c | 12 | \r |
b1f6a7c6 | 13 | **/\r |
192f6d4c | 14 | \r |
0d516397 | 15 | #include "PeiMain.h"\r |
192f6d4c | 16 | \r |
b1f6a7c6 | 17 | /**\r |
18 | \r | |
e9f4a2a9 | 19 | Migrate Pointer from the temporary memory to PEI installed memory.\r |
0f9ebb32 | 20 | \r |
e9f4a2a9 | 21 | @param Pointer Pointer to the Pointer needs to be converted.\r |
0f9ebb32 LG |
22 | @param TempBottom Base of old temporary memory\r |
23 | @param TempTop Top of old temporary memory\r | |
24 | @param Offset Offset of new memory to old temporary memory.\r | |
d1102dba | 25 | @param OffsetPositive Positive flag of Offset value.\r |
0f9ebb32 LG |
26 | \r |
27 | **/\r | |
28 | VOID\r | |
e9f4a2a9 SZ |
29 | ConvertPointer (\r |
30 | IN OUT VOID **Pointer,\r | |
0f9ebb32 LG |
31 | IN UINTN TempBottom,\r |
32 | IN UINTN TempTop,\r | |
33 | IN UINTN Offset,\r | |
34 | IN BOOLEAN OffsetPositive\r | |
35 | )\r | |
36 | {\r | |
e9f4a2a9 SZ |
37 | if (((UINTN) *Pointer < TempTop) &&\r |
38 | ((UINTN) *Pointer >= TempBottom)) {\r | |
0f9ebb32 | 39 | if (OffsetPositive) {\r |
e9f4a2a9 | 40 | *Pointer = (VOID *) ((UINTN) *Pointer + Offset);\r |
0f9ebb32 | 41 | } else {\r |
e9f4a2a9 | 42 | *Pointer = (VOID *) ((UINTN) *Pointer - Offset);\r |
0f9ebb32 | 43 | }\r |
e9f4a2a9 SZ |
44 | }\r |
45 | }\r | |
0f9ebb32 | 46 | \r |
e9f4a2a9 | 47 | /**\r |
0f9ebb32 | 48 | \r |
e9f4a2a9 SZ |
49 | Migrate Pointer in ranges of the temporary memory to PEI installed memory.\r |
50 | \r | |
51 | @param SecCoreData Points to a data structure containing SEC to PEI handoff data, such as the size\r | |
52 | and location of temporary RAM, the stack location and the BFV location.\r | |
53 | @param PrivateData Pointer to PeiCore's private data structure.\r | |
54 | @param Pointer Pointer to the Pointer needs to be converted.\r | |
55 | \r | |
56 | **/\r | |
57 | VOID\r | |
58 | ConvertPointerInRanges (\r | |
59 | IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,\r | |
60 | IN PEI_CORE_INSTANCE *PrivateData,\r | |
61 | IN OUT VOID **Pointer\r | |
62 | )\r | |
63 | {\r | |
64 | UINT8 IndexHole;\r | |
0f9ebb32 | 65 | \r |
e9f4a2a9 | 66 | if (PrivateData->MemoryPages.Size != 0) {\r |
0f9ebb32 | 67 | //\r |
e9f4a2a9 SZ |
68 | // Convert PPI pointer in old memory pages\r |
69 | // It needs to be done before Convert PPI pointer in old Heap\r | |
0f9ebb32 | 70 | //\r |
e9f4a2a9 SZ |
71 | ConvertPointer (\r |
72 | Pointer,\r | |
73 | (UINTN)PrivateData->MemoryPages.Base,\r | |
74 | (UINTN)PrivateData->MemoryPages.Base + PrivateData->MemoryPages.Size,\r | |
75 | PrivateData->MemoryPages.Offset,\r | |
76 | PrivateData->MemoryPages.OffsetPositive\r | |
77 | );\r | |
78 | }\r | |
79 | \r | |
80 | //\r | |
81 | // Convert PPI pointer in old Heap\r | |
82 | //\r | |
83 | ConvertPointer (\r | |
84 | Pointer,\r | |
85 | (UINTN)SecCoreData->PeiTemporaryRamBase,\r | |
86 | (UINTN)SecCoreData->PeiTemporaryRamBase + SecCoreData->PeiTemporaryRamSize,\r | |
87 | PrivateData->HeapOffset,\r | |
88 | PrivateData->HeapOffsetPositive\r | |
89 | );\r | |
90 | \r | |
91 | //\r | |
92 | // Convert PPI pointer in old Stack\r | |
93 | //\r | |
94 | ConvertPointer (\r | |
95 | Pointer,\r | |
96 | (UINTN)SecCoreData->StackBase,\r | |
97 | (UINTN)SecCoreData->StackBase + SecCoreData->StackSize,\r | |
98 | PrivateData->StackOffset,\r | |
99 | PrivateData->StackOffsetPositive\r | |
100 | );\r | |
101 | \r | |
102 | //\r | |
103 | // Convert PPI pointer in old TempRam Hole\r | |
104 | //\r | |
105 | for (IndexHole = 0; IndexHole < HOLE_MAX_NUMBER; IndexHole ++) {\r | |
106 | if (PrivateData->HoleData[IndexHole].Size == 0) {\r | |
107 | continue;\r | |
0f9ebb32 | 108 | }\r |
e9f4a2a9 SZ |
109 | \r |
110 | ConvertPointer (\r | |
111 | Pointer,\r | |
112 | (UINTN)PrivateData->HoleData[IndexHole].Base,\r | |
113 | (UINTN)PrivateData->HoleData[IndexHole].Base + PrivateData->HoleData[IndexHole].Size,\r | |
114 | PrivateData->HoleData[IndexHole].Offset,\r | |
115 | PrivateData->HoleData[IndexHole].OffsetPositive\r | |
116 | );\r | |
0f9ebb32 LG |
117 | }\r |
118 | }\r | |
119 | \r | |
e9f4a2a9 SZ |
120 | /**\r |
121 | \r | |
122 | Migrate Single PPI Pointer from the temporary memory to PEI installed memory.\r | |
123 | \r | |
4a76d9b9 | 124 | @param SecCoreData Points to a data structure containing SEC to PEI handoff data, such as the size\r |
e9f4a2a9 SZ |
125 | and location of temporary RAM, the stack location and the BFV location.\r |
126 | @param PrivateData Pointer to PeiCore's private data structure.\r | |
127 | @param PpiPointer Pointer to Ppi\r | |
128 | \r | |
129 | **/\r | |
130 | VOID\r | |
131 | ConvertSinglePpiPointer (\r | |
132 | IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,\r | |
133 | IN PEI_CORE_INSTANCE *PrivateData,\r | |
134 | IN PEI_PPI_LIST_POINTERS *PpiPointer\r | |
135 | )\r | |
136 | {\r | |
137 | //\r | |
138 | // 1. Convert the pointer to the PPI descriptor from the old TempRam\r | |
139 | // to the relocated physical memory.\r | |
140 | // It (for the pointer to the PPI descriptor) needs to be done before 2 (for\r | |
141 | // the pointer to the GUID) and 3 (for the pointer to the PPI interface structure).\r | |
142 | //\r | |
143 | ConvertPointerInRanges (SecCoreData, PrivateData, &PpiPointer->Raw);\r | |
144 | //\r | |
145 | // 2. Convert the pointer to the GUID in the PPI or NOTIFY descriptor\r | |
146 | // from the old TempRam to the relocated physical memory.\r | |
147 | //\r | |
148 | ConvertPointerInRanges (SecCoreData, PrivateData, (VOID **) &PpiPointer->Ppi->Guid);\r | |
149 | //\r | |
150 | // 3. Convert the pointer to the PPI interface structure in the PPI descriptor\r | |
151 | // from the old TempRam to the relocated physical memory.\r | |
152 | //\r | |
153 | ConvertPointerInRanges (SecCoreData, PrivateData, (VOID **) &PpiPointer->Ppi->Ppi);\r | |
154 | }\r | |
155 | \r | |
0f9ebb32 LG |
156 | /**\r |
157 | \r | |
b2374cec | 158 | Migrate PPI Pointers from the temporary memory to PEI installed memory.\r |
b1f6a7c6 | 159 | \r |
4a76d9b9 | 160 | @param SecCoreData Points to a data structure containing SEC to PEI handoff data, such as the size\r |
424b7c9f | 161 | and location of temporary RAM, the stack location and the BFV location.\r |
162 | @param PrivateData Pointer to PeiCore's private data structure.\r | |
b1f6a7c6 | 163 | \r |
164 | **/\r | |
192f6d4c | 165 | VOID\r |
166 | ConvertPpiPointers (\r | |
424b7c9f | 167 | IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,\r |
168 | IN PEI_CORE_INSTANCE *PrivateData\r | |
192f6d4c | 169 | )\r |
192f6d4c | 170 | {\r |
192f6d4c | 171 | UINT8 Index;\r |
192f6d4c | 172 | \r |
f2bc359c SZ |
173 | //\r |
174 | // Convert normal PPIs.\r | |
175 | //\r | |
176 | for (Index = 0; Index < PrivateData->PpiData.PpiList.CurrentCount; Index++) {\r | |
177 | ConvertSinglePpiPointer (\r | |
178 | SecCoreData,\r | |
179 | PrivateData,\r | |
180 | &PrivateData->PpiData.PpiList.PpiPtrs[Index]\r | |
181 | );\r | |
182 | }\r | |
183 | \r | |
184 | //\r | |
185 | // Convert Callback Notification PPIs.\r | |
186 | //\r | |
187 | for (Index = 0; Index < PrivateData->PpiData.CallbackNotifyList.CurrentCount; Index++) {\r | |
188 | ConvertSinglePpiPointer (\r | |
189 | SecCoreData,\r | |
190 | PrivateData,\r | |
191 | &PrivateData->PpiData.CallbackNotifyList.NotifyPtrs[Index]\r | |
192 | );\r | |
193 | }\r | |
194 | \r | |
195 | //\r | |
196 | // Convert Dispatch Notification PPIs.\r | |
197 | //\r | |
198 | for (Index = 0; Index < PrivateData->PpiData.DispatchNotifyList.CurrentCount; Index++) {\r | |
199 | ConvertSinglePpiPointer (\r | |
200 | SecCoreData,\r | |
201 | PrivateData,\r | |
202 | &PrivateData->PpiData.DispatchNotifyList.NotifyPtrs[Index]\r | |
203 | );\r | |
192f6d4c | 204 | }\r |
205 | }\r | |
206 | \r | |
b1f6a7c6 | 207 | /**\r |
192f6d4c | 208 | \r |
d1102dba | 209 | This function installs an interface in the PEI PPI database by GUID.\r |
0f65cdaa | 210 | The purpose of the service is to publish an interface that other parties\r |
211 | can use to call additional PEIMs.\r | |
192f6d4c | 212 | \r |
0f65cdaa | 213 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r |
214 | @param PpiList Pointer to a list of PEI PPI Descriptors.\r | |
884200f9 SZ |
215 | @param Single TRUE if only single entry in the PpiList.\r |
216 | FALSE if the PpiList is ended with an entry which has the\r | |
217 | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST flag set in its Flags field.\r | |
b1f6a7c6 | 218 | \r |
0f65cdaa | 219 | @retval EFI_SUCCESS if all PPIs in PpiList are successfully installed.\r |
220 | @retval EFI_INVALID_PARAMETER if PpiList is NULL pointer\r | |
731bd38e | 221 | if any PPI in PpiList is not valid\r |
0f65cdaa | 222 | @retval EFI_OUT_OF_RESOURCES if there is no more memory resource to install PPI\r |
b1f6a7c6 | 223 | \r |
224 | **/\r | |
192f6d4c | 225 | EFI_STATUS\r |
884200f9 | 226 | InternalPeiInstallPpi (\r |
0c2b5da8 | 227 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
884200f9 SZ |
228 | IN CONST EFI_PEI_PPI_DESCRIPTOR *PpiList,\r |
229 | IN BOOLEAN Single\r | |
192f6d4c | 230 | )\r |
192f6d4c | 231 | {\r |
f2bc359c SZ |
232 | PEI_CORE_INSTANCE *PrivateData;\r |
233 | PEI_PPI_LIST *PpiListPointer;\r | |
234 | UINTN Index;\r | |
235 | UINTN LastCount;\r | |
236 | VOID *TempPtr;\r | |
192f6d4c | 237 | \r |
238 | if (PpiList == NULL) {\r | |
239 | return EFI_INVALID_PARAMETER;\r | |
240 | }\r | |
241 | \r | |
242 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r | |
243 | \r | |
f2bc359c SZ |
244 | PpiListPointer = &PrivateData->PpiData.PpiList;\r |
245 | Index = PpiListPointer->CurrentCount;\r | |
246 | LastCount = Index;\r | |
192f6d4c | 247 | \r |
248 | //\r | |
249 | // This is loop installs all PPI descriptors in the PpiList. It is terminated\r | |
250 | // by the EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST being set in the last\r | |
251 | // EFI_PEI_PPI_DESCRIPTOR in the list.\r | |
252 | //\r | |
58dcdada | 253 | \r |
192f6d4c | 254 | for (;;) {\r |
192f6d4c | 255 | //\r |
58dcdada | 256 | // Check if it is a valid PPI.\r |
192f6d4c | 257 | // If not, rollback list to exclude all in this list.\r |
258 | // Try to indicate which item failed.\r | |
259 | //\r | |
260 | if ((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_PPI) == 0) {\r | |
f2bc359c | 261 | PpiListPointer->CurrentCount = LastCount;\r |
0e549d5b | 262 | DEBUG((EFI_D_ERROR, "ERROR -> InstallPpi: %g %p\n", PpiList->Guid, PpiList->Ppi));\r |
192f6d4c | 263 | return EFI_INVALID_PARAMETER;\r |
264 | }\r | |
265 | \r | |
f2bc359c SZ |
266 | if (Index >= PpiListPointer->MaxCount) {\r |
267 | //\r | |
268 | // Run out of room, grow the buffer.\r | |
269 | //\r | |
270 | TempPtr = AllocateZeroPool (\r | |
271 | sizeof (PEI_PPI_LIST_POINTERS) * (PpiListPointer->MaxCount + PPI_GROWTH_STEP)\r | |
272 | );\r | |
273 | ASSERT (TempPtr != NULL);\r | |
274 | CopyMem (\r | |
275 | TempPtr,\r | |
276 | PpiListPointer->PpiPtrs,\r | |
277 | sizeof (PEI_PPI_LIST_POINTERS) * PpiListPointer->MaxCount\r | |
278 | );\r | |
279 | PpiListPointer->PpiPtrs = TempPtr;\r | |
280 | PpiListPointer->MaxCount = PpiListPointer->MaxCount + PPI_GROWTH_STEP;\r | |
281 | }\r | |
282 | \r | |
58dcdada | 283 | DEBUG((EFI_D_INFO, "Install PPI: %g\n", PpiList->Guid));\r |
f2bc359c SZ |
284 | PpiListPointer->PpiPtrs[Index].Ppi = (EFI_PEI_PPI_DESCRIPTOR *) PpiList;\r |
285 | Index++;\r | |
286 | PpiListPointer->CurrentCount++;\r | |
58dcdada | 287 | \r |
884200f9 SZ |
288 | if (Single) {\r |
289 | //\r | |
290 | // Only single entry in the PpiList.\r | |
291 | //\r | |
292 | break;\r | |
293 | } else if ((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) ==\r | |
294 | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) {\r | |
295 | //\r | |
296 | // Continue until the end of the PPI List.\r | |
297 | //\r | |
192f6d4c | 298 | break;\r |
299 | }\r | |
f2bc359c SZ |
300 | //\r |
301 | // Go to the next descriptor.\r | |
302 | //\r | |
192f6d4c | 303 | PpiList++;\r |
192f6d4c | 304 | }\r |
305 | \r | |
306 | //\r | |
f2bc359c | 307 | // Process any callback level notifies for newly installed PPIs.\r |
192f6d4c | 308 | //\r |
f2bc359c | 309 | ProcessNotify (\r |
b0d803fe | 310 | PrivateData,\r |
192f6d4c | 311 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,\r |
f2bc359c SZ |
312 | LastCount,\r |
313 | PpiListPointer->CurrentCount,\r | |
314 | 0,\r | |
315 | PrivateData->PpiData.CallbackNotifyList.CurrentCount\r | |
192f6d4c | 316 | );\r |
317 | \r | |
192f6d4c | 318 | return EFI_SUCCESS;\r |
319 | }\r | |
320 | \r | |
884200f9 SZ |
321 | /**\r |
322 | \r | |
d1102dba | 323 | This function installs an interface in the PEI PPI database by GUID.\r |
884200f9 SZ |
324 | The purpose of the service is to publish an interface that other parties\r |
325 | can use to call additional PEIMs.\r | |
326 | \r | |
327 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r | |
328 | @param PpiList Pointer to a list of PEI PPI Descriptors.\r | |
329 | \r | |
330 | @retval EFI_SUCCESS if all PPIs in PpiList are successfully installed.\r | |
331 | @retval EFI_INVALID_PARAMETER if PpiList is NULL pointer\r | |
332 | if any PPI in PpiList is not valid\r | |
333 | @retval EFI_OUT_OF_RESOURCES if there is no more memory resource to install PPI\r | |
334 | \r | |
335 | **/\r | |
336 | EFI_STATUS\r | |
337 | EFIAPI\r | |
338 | PeiInstallPpi (\r | |
339 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
340 | IN CONST EFI_PEI_PPI_DESCRIPTOR *PpiList\r | |
341 | )\r | |
342 | {\r | |
343 | return InternalPeiInstallPpi (PeiServices, PpiList, FALSE);\r | |
344 | }\r | |
345 | \r | |
b1f6a7c6 | 346 | /**\r |
347 | \r | |
d1102dba LG |
348 | This function reinstalls an interface in the PEI PPI database by GUID.\r |
349 | The purpose of the service is to publish an interface that other parties can\r | |
350 | use to replace an interface of the same name in the protocol database with a\r | |
0f65cdaa | 351 | different interface.\r |
b1f6a7c6 | 352 | \r |
0f65cdaa | 353 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r |
354 | @param OldPpi Pointer to the old PEI PPI Descriptors.\r | |
355 | @param NewPpi Pointer to the new PEI PPI Descriptors.\r | |
192f6d4c | 356 | \r |
0f65cdaa | 357 | @retval EFI_SUCCESS if the operation was successful\r |
358 | @retval EFI_INVALID_PARAMETER if OldPpi or NewPpi is NULL\r | |
359 | @retval EFI_INVALID_PARAMETER if NewPpi is not valid\r | |
360 | @retval EFI_NOT_FOUND if the PPI was not in the database\r | |
b1f6a7c6 | 361 | \r |
362 | **/\r | |
192f6d4c | 363 | EFI_STATUS\r |
364 | EFIAPI\r | |
365 | PeiReInstallPpi (\r | |
0c2b5da8 | 366 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
367 | IN CONST EFI_PEI_PPI_DESCRIPTOR *OldPpi,\r | |
368 | IN CONST EFI_PEI_PPI_DESCRIPTOR *NewPpi\r | |
192f6d4c | 369 | )\r |
192f6d4c | 370 | {\r |
371 | PEI_CORE_INSTANCE *PrivateData;\r | |
f2bc359c | 372 | UINTN Index;\r |
192f6d4c | 373 | \r |
374 | \r | |
375 | if ((OldPpi == NULL) || (NewPpi == NULL)) {\r | |
376 | return EFI_INVALID_PARAMETER;\r | |
377 | }\r | |
378 | \r | |
379 | if ((NewPpi->Flags & EFI_PEI_PPI_DESCRIPTOR_PPI) == 0) {\r | |
380 | return EFI_INVALID_PARAMETER;\r | |
381 | }\r | |
382 | \r | |
383 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r | |
384 | \r | |
385 | //\r | |
386 | // Find the old PPI instance in the database. If we can not find it,\r | |
387 | // return the EFI_NOT_FOUND error.\r | |
388 | //\r | |
f2bc359c SZ |
389 | for (Index = 0; Index < PrivateData->PpiData.PpiList.CurrentCount; Index++) {\r |
390 | if (OldPpi == PrivateData->PpiData.PpiList.PpiPtrs[Index].Ppi) {\r | |
192f6d4c | 391 | break;\r |
392 | }\r | |
393 | }\r | |
f2bc359c | 394 | if (Index == PrivateData->PpiData.PpiList.CurrentCount) {\r |
192f6d4c | 395 | return EFI_NOT_FOUND;\r |
396 | }\r | |
397 | \r | |
398 | //\r | |
f2bc359c | 399 | // Replace the old PPI with the new one.\r |
58dcdada | 400 | //\r |
192f6d4c | 401 | DEBUG((EFI_D_INFO, "Reinstall PPI: %g\n", NewPpi->Guid));\r |
f2bc359c | 402 | PrivateData->PpiData.PpiList.PpiPtrs[Index].Ppi = (EFI_PEI_PPI_DESCRIPTOR *) NewPpi;\r |
192f6d4c | 403 | \r |
404 | //\r | |
f2bc359c | 405 | // Process any callback level notifies for the newly installed PPI.\r |
192f6d4c | 406 | //\r |
f2bc359c | 407 | ProcessNotify (\r |
b0d803fe | 408 | PrivateData,\r |
192f6d4c | 409 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,\r |
410 | Index,\r | |
411 | Index+1,\r | |
f2bc359c SZ |
412 | 0,\r |
413 | PrivateData->PpiData.CallbackNotifyList.CurrentCount\r | |
192f6d4c | 414 | );\r |
415 | \r | |
192f6d4c | 416 | return EFI_SUCCESS;\r |
417 | }\r | |
418 | \r | |
b1f6a7c6 | 419 | /**\r |
420 | \r | |
421 | Locate a given named PPI.\r | |
422 | \r | |
192f6d4c | 423 | \r |
0f65cdaa | 424 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r |
425 | @param Guid Pointer to GUID of the PPI.\r | |
426 | @param Instance Instance Number to discover.\r | |
427 | @param PpiDescriptor Pointer to reference the found descriptor. If not NULL,\r | |
428 | returns a pointer to the descriptor (includes flags, etc)\r | |
429 | @param Ppi Pointer to reference the found PPI\r | |
b1f6a7c6 | 430 | \r |
431 | @retval EFI_SUCCESS if the PPI is in the database\r | |
432 | @retval EFI_NOT_FOUND if the PPI is not in the database\r | |
433 | \r | |
434 | **/\r | |
192f6d4c | 435 | EFI_STATUS\r |
436 | EFIAPI\r | |
437 | PeiLocatePpi (\r | |
0c2b5da8 | 438 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
439 | IN CONST EFI_GUID *Guid,\r | |
0f65cdaa | 440 | IN UINTN Instance,\r |
441 | IN OUT EFI_PEI_PPI_DESCRIPTOR **PpiDescriptor,\r | |
442 | IN OUT VOID **Ppi\r | |
192f6d4c | 443 | )\r |
192f6d4c | 444 | {\r |
f2bc359c SZ |
445 | PEI_CORE_INSTANCE *PrivateData;\r |
446 | UINTN Index;\r | |
447 | EFI_GUID *CheckGuid;\r | |
448 | EFI_PEI_PPI_DESCRIPTOR *TempPtr;\r | |
192f6d4c | 449 | \r |
58dcdada | 450 | \r |
192f6d4c | 451 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r |
452 | \r | |
453 | //\r | |
454 | // Search the data base for the matching instance of the GUIDed PPI.\r | |
455 | //\r | |
f2bc359c SZ |
456 | for (Index = 0; Index < PrivateData->PpiData.PpiList.CurrentCount; Index++) {\r |
457 | TempPtr = PrivateData->PpiData.PpiList.PpiPtrs[Index].Ppi;\r | |
192f6d4c | 458 | CheckGuid = TempPtr->Guid;\r |
459 | \r | |
460 | //\r | |
461 | // Don't use CompareGuid function here for performance reasons.\r | |
462 | // Instead we compare the GUID as INT32 at a time and branch\r | |
463 | // on the first failed comparison.\r | |
464 | //\r | |
465 | if ((((INT32 *)Guid)[0] == ((INT32 *)CheckGuid)[0]) &&\r | |
466 | (((INT32 *)Guid)[1] == ((INT32 *)CheckGuid)[1]) &&\r | |
467 | (((INT32 *)Guid)[2] == ((INT32 *)CheckGuid)[2]) &&\r | |
468 | (((INT32 *)Guid)[3] == ((INT32 *)CheckGuid)[3])) {\r | |
469 | if (Instance == 0) {\r | |
470 | \r | |
471 | if (PpiDescriptor != NULL) {\r | |
472 | *PpiDescriptor = TempPtr;\r | |
473 | }\r | |
474 | \r | |
475 | if (Ppi != NULL) {\r | |
476 | *Ppi = TempPtr->Ppi;\r | |
477 | }\r | |
478 | \r | |
479 | \r | |
480 | return EFI_SUCCESS;\r | |
481 | }\r | |
482 | Instance--;\r | |
483 | }\r | |
484 | }\r | |
485 | \r | |
486 | return EFI_NOT_FOUND;\r | |
487 | }\r | |
488 | \r | |
b1f6a7c6 | 489 | /**\r |
192f6d4c | 490 | \r |
d1102dba LG |
491 | This function installs a notification service to be called back when a given\r |
492 | interface is installed or reinstalled. The purpose of the service is to publish\r | |
0f65cdaa | 493 | an interface that other parties can use to call additional PPIs that may materialize later.\r |
b1f6a7c6 | 494 | \r |
0f65cdaa | 495 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r |
496 | @param NotifyList Pointer to list of Descriptors to notify upon.\r | |
884200f9 SZ |
497 | @param Single TRUE if only single entry in the NotifyList.\r |
498 | FALSE if the NotifyList is ended with an entry which has the\r | |
499 | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST flag set in its Flags field.\r | |
b1f6a7c6 | 500 | \r |
501 | @retval EFI_SUCCESS if successful\r | |
502 | @retval EFI_OUT_OF_RESOURCES if no space in the database\r | |
884200f9 | 503 | @retval EFI_INVALID_PARAMETER if not a good descriptor\r |
b1f6a7c6 | 504 | \r |
505 | **/\r | |
192f6d4c | 506 | EFI_STATUS\r |
884200f9 | 507 | InternalPeiNotifyPpi (\r |
0c2b5da8 | 508 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
884200f9 SZ |
509 | IN CONST EFI_PEI_NOTIFY_DESCRIPTOR *NotifyList,\r |
510 | IN BOOLEAN Single\r | |
192f6d4c | 511 | )\r |
192f6d4c | 512 | {\r |
f2bc359c SZ |
513 | PEI_CORE_INSTANCE *PrivateData;\r |
514 | PEI_CALLBACK_NOTIFY_LIST *CallbackNotifyListPointer;\r | |
515 | UINTN CallbackNotifyIndex;\r | |
516 | UINTN LastCallbackNotifyCount;\r | |
517 | PEI_DISPATCH_NOTIFY_LIST *DispatchNotifyListPointer;\r | |
518 | UINTN DispatchNotifyIndex;\r | |
519 | UINTN LastDispatchNotifyCount;\r | |
520 | VOID *TempPtr;\r | |
192f6d4c | 521 | \r |
522 | if (NotifyList == NULL) {\r | |
523 | return EFI_INVALID_PARAMETER;\r | |
524 | }\r | |
525 | \r | |
526 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r | |
527 | \r | |
f2bc359c SZ |
528 | CallbackNotifyListPointer = &PrivateData->PpiData.CallbackNotifyList;\r |
529 | CallbackNotifyIndex = CallbackNotifyListPointer->CurrentCount;\r | |
530 | LastCallbackNotifyCount = CallbackNotifyIndex;\r | |
531 | \r | |
532 | DispatchNotifyListPointer = &PrivateData->PpiData.DispatchNotifyList;\r | |
533 | DispatchNotifyIndex = DispatchNotifyListPointer->CurrentCount;\r | |
534 | LastDispatchNotifyCount = DispatchNotifyIndex;\r | |
192f6d4c | 535 | \r |
536 | //\r | |
537 | // This is loop installs all Notify descriptors in the NotifyList. It is\r | |
538 | // terminated by the EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST being set in the last\r | |
539 | // EFI_PEI_NOTIFY_DESCRIPTOR in the list.\r | |
540 | //\r | |
541 | \r | |
542 | for (;;) {\r | |
192f6d4c | 543 | //\r |
544 | // If some of the PPI data is invalid restore original Notify PPI database value\r | |
545 | //\r | |
546 | if ((NotifyList->Flags & EFI_PEI_PPI_DESCRIPTOR_NOTIFY_TYPES) == 0) {\r | |
f2bc359c SZ |
547 | CallbackNotifyListPointer->CurrentCount = LastCallbackNotifyCount;\r |
548 | DispatchNotifyListPointer->CurrentCount = LastDispatchNotifyCount;\r | |
549 | DEBUG((DEBUG_ERROR, "ERROR -> NotifyPpi: %g %p\n", NotifyList->Guid, NotifyList->Notify));\r | |
192f6d4c | 550 | return EFI_INVALID_PARAMETER;\r |
551 | }\r | |
58dcdada | 552 | \r |
f2bc359c SZ |
553 | if ((NotifyList->Flags & EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK) != 0) {\r |
554 | if (CallbackNotifyIndex >= CallbackNotifyListPointer->MaxCount) {\r | |
555 | //\r | |
556 | // Run out of room, grow the buffer.\r | |
557 | //\r | |
558 | TempPtr = AllocateZeroPool (\r | |
559 | sizeof (PEI_PPI_LIST_POINTERS) * (CallbackNotifyListPointer->MaxCount + CALLBACK_NOTIFY_GROWTH_STEP)\r | |
560 | );\r | |
561 | ASSERT (TempPtr != NULL);\r | |
562 | CopyMem (\r | |
563 | TempPtr,\r | |
564 | CallbackNotifyListPointer->NotifyPtrs,\r | |
565 | sizeof (PEI_PPI_LIST_POINTERS) * CallbackNotifyListPointer->MaxCount\r | |
566 | );\r | |
567 | CallbackNotifyListPointer->NotifyPtrs = TempPtr;\r | |
568 | CallbackNotifyListPointer->MaxCount = CallbackNotifyListPointer->MaxCount + CALLBACK_NOTIFY_GROWTH_STEP;\r | |
569 | }\r | |
570 | CallbackNotifyListPointer->NotifyPtrs[CallbackNotifyIndex].Notify = (EFI_PEI_NOTIFY_DESCRIPTOR *) NotifyList;\r | |
571 | CallbackNotifyIndex++;\r | |
572 | CallbackNotifyListPointer->CurrentCount++;\r | |
573 | } else {\r | |
574 | if (DispatchNotifyIndex >= DispatchNotifyListPointer->MaxCount) {\r | |
575 | //\r | |
576 | // Run out of room, grow the buffer.\r | |
577 | //\r | |
578 | TempPtr = AllocateZeroPool (\r | |
579 | sizeof (PEI_PPI_LIST_POINTERS) * (DispatchNotifyListPointer->MaxCount + DISPATCH_NOTIFY_GROWTH_STEP)\r | |
580 | );\r | |
581 | ASSERT (TempPtr != NULL);\r | |
582 | CopyMem (\r | |
583 | TempPtr,\r | |
584 | DispatchNotifyListPointer->NotifyPtrs,\r | |
585 | sizeof (PEI_PPI_LIST_POINTERS) * DispatchNotifyListPointer->MaxCount\r | |
586 | );\r | |
587 | DispatchNotifyListPointer->NotifyPtrs = TempPtr;\r | |
588 | DispatchNotifyListPointer->MaxCount = DispatchNotifyListPointer->MaxCount + DISPATCH_NOTIFY_GROWTH_STEP;\r | |
589 | }\r | |
590 | DispatchNotifyListPointer->NotifyPtrs[DispatchNotifyIndex].Notify = (EFI_PEI_NOTIFY_DESCRIPTOR *) NotifyList;\r | |
591 | DispatchNotifyIndex++;\r | |
592 | DispatchNotifyListPointer->CurrentCount++;\r | |
58dcdada | 593 | }\r |
594 | \r | |
192f6d4c | 595 | DEBUG((EFI_D_INFO, "Register PPI Notify: %g\n", NotifyList->Guid));\r |
f2bc359c | 596 | \r |
884200f9 SZ |
597 | if (Single) {\r |
598 | //\r | |
599 | // Only single entry in the NotifyList.\r | |
600 | //\r | |
601 | break;\r | |
602 | } else if ((NotifyList->Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) ==\r | |
603 | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) {\r | |
604 | //\r | |
605 | // Continue until the end of the Notify List.\r | |
606 | //\r | |
192f6d4c | 607 | break;\r |
608 | }\r | |
609 | //\r | |
f2bc359c | 610 | // Go to the next descriptor.\r |
192f6d4c | 611 | //\r |
612 | NotifyList++;\r | |
192f6d4c | 613 | }\r |
58dcdada | 614 | \r |
192f6d4c | 615 | //\r |
f2bc359c | 616 | // Process any callback level notifies for all previously installed PPIs.\r |
192f6d4c | 617 | //\r |
f2bc359c | 618 | ProcessNotify (\r |
b0d803fe | 619 | PrivateData,\r |
192f6d4c | 620 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,\r |
621 | 0,\r | |
f2bc359c SZ |
622 | PrivateData->PpiData.PpiList.CurrentCount,\r |
623 | LastCallbackNotifyCount,\r | |
624 | CallbackNotifyListPointer->CurrentCount\r | |
192f6d4c | 625 | );\r |
58dcdada | 626 | \r |
192f6d4c | 627 | return EFI_SUCCESS;\r |
628 | }\r | |
629 | \r | |
884200f9 SZ |
630 | /**\r |
631 | \r | |
d1102dba LG |
632 | This function installs a notification service to be called back when a given\r |
633 | interface is installed or reinstalled. The purpose of the service is to publish\r | |
884200f9 SZ |
634 | an interface that other parties can use to call additional PPIs that may materialize later.\r |
635 | \r | |
636 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r | |
637 | @param NotifyList Pointer to list of Descriptors to notify upon.\r | |
638 | \r | |
639 | @retval EFI_SUCCESS if successful\r | |
640 | @retval EFI_OUT_OF_RESOURCES if no space in the database\r | |
641 | @retval EFI_INVALID_PARAMETER if not a good descriptor\r | |
642 | \r | |
643 | **/\r | |
644 | EFI_STATUS\r | |
645 | EFIAPI\r | |
646 | PeiNotifyPpi (\r | |
647 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
648 | IN CONST EFI_PEI_NOTIFY_DESCRIPTOR *NotifyList\r | |
649 | )\r | |
650 | {\r | |
651 | return InternalPeiNotifyPpi (PeiServices, NotifyList, FALSE);\r | |
652 | }\r | |
653 | \r | |
b1f6a7c6 | 654 | /**\r |
192f6d4c | 655 | \r |
656 | Process the Notify List at dispatch level.\r | |
657 | \r | |
b1f6a7c6 | 658 | @param PrivateData PeiCore's private data structure.\r |
192f6d4c | 659 | \r |
b1f6a7c6 | 660 | **/\r |
661 | VOID\r | |
f2bc359c | 662 | ProcessDispatchNotifyList (\r |
b1f6a7c6 | 663 | IN PEI_CORE_INSTANCE *PrivateData\r |
664 | )\r | |
192f6d4c | 665 | {\r |
f2bc359c | 666 | UINTN TempValue;\r |
58dcdada | 667 | \r |
192f6d4c | 668 | while (TRUE) {\r |
669 | //\r | |
670 | // Check if the PEIM that was just dispatched resulted in any\r | |
671 | // Notifies getting installed. If so, go process any dispatch\r | |
672 | // level Notifies that match the previouly installed PPIs.\r | |
f2bc359c SZ |
673 | // Use "while" instead of "if" since ProcessNotify can modify\r |
674 | // DispatchNotifyList.CurrentCount (with NotifyPpi) so we have\r | |
675 | // to iterate until the same.\r | |
192f6d4c | 676 | //\r |
f2bc359c SZ |
677 | while (PrivateData->PpiData.DispatchNotifyList.LastDispatchedCount != PrivateData->PpiData.DispatchNotifyList.CurrentCount) {\r |
678 | TempValue = PrivateData->PpiData.DispatchNotifyList.CurrentCount;\r | |
679 | ProcessNotify (\r | |
b0d803fe | 680 | PrivateData,\r |
192f6d4c | 681 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH,\r |
682 | 0,\r | |
f2bc359c SZ |
683 | PrivateData->PpiData.PpiList.LastDispatchedCount,\r |
684 | PrivateData->PpiData.DispatchNotifyList.LastDispatchedCount,\r | |
685 | PrivateData->PpiData.DispatchNotifyList.CurrentCount\r | |
192f6d4c | 686 | );\r |
f2bc359c | 687 | PrivateData->PpiData.DispatchNotifyList.LastDispatchedCount = TempValue;\r |
192f6d4c | 688 | }\r |
58dcdada | 689 | \r |
192f6d4c | 690 | //\r |
691 | // Check if the PEIM that was just dispatched resulted in any\r | |
692 | // PPIs getting installed. If so, go process any dispatch\r | |
693 | // level Notifies that match the installed PPIs.\r | |
f2bc359c SZ |
694 | // Use "while" instead of "if" since ProcessNotify can modify\r |
695 | // PpiList.CurrentCount (with InstallPpi) so we have to iterate\r | |
696 | // until the same.\r | |
192f6d4c | 697 | //\r |
f2bc359c SZ |
698 | while (PrivateData->PpiData.PpiList.LastDispatchedCount != PrivateData->PpiData.PpiList.CurrentCount) {\r |
699 | TempValue = PrivateData->PpiData.PpiList.CurrentCount;\r | |
700 | ProcessNotify (\r | |
b0d803fe | 701 | PrivateData,\r |
192f6d4c | 702 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH,\r |
f2bc359c SZ |
703 | PrivateData->PpiData.PpiList.LastDispatchedCount,\r |
704 | PrivateData->PpiData.PpiList.CurrentCount,\r | |
705 | 0,\r | |
706 | PrivateData->PpiData.DispatchNotifyList.LastDispatchedCount\r | |
192f6d4c | 707 | );\r |
f2bc359c | 708 | PrivateData->PpiData.PpiList.LastDispatchedCount = TempValue;\r |
192f6d4c | 709 | }\r |
58dcdada | 710 | \r |
f2bc359c | 711 | if (PrivateData->PpiData.DispatchNotifyList.LastDispatchedCount == PrivateData->PpiData.DispatchNotifyList.CurrentCount) {\r |
192f6d4c | 712 | break;\r |
713 | }\r | |
58dcdada | 714 | }\r |
192f6d4c | 715 | return;\r |
716 | }\r | |
717 | \r | |
b1f6a7c6 | 718 | /**\r |
719 | \r | |
f2bc359c | 720 | Process notifications.\r |
b1f6a7c6 | 721 | \r |
722 | @param PrivateData PeiCore's private data structure\r | |
723 | @param NotifyType Type of notify to fire.\r | |
724 | @param InstallStartIndex Install Beginning index.\r | |
725 | @param InstallStopIndex Install Ending index.\r | |
726 | @param NotifyStartIndex Notify Beginning index.\r | |
727 | @param NotifyStopIndex Notify Ending index.\r | |
728 | \r | |
729 | **/\r | |
192f6d4c | 730 | VOID\r |
f2bc359c | 731 | ProcessNotify (\r |
b0d803fe | 732 | IN PEI_CORE_INSTANCE *PrivateData,\r |
192f6d4c | 733 | IN UINTN NotifyType,\r |
734 | IN INTN InstallStartIndex,\r | |
735 | IN INTN InstallStopIndex,\r | |
736 | IN INTN NotifyStartIndex,\r | |
737 | IN INTN NotifyStopIndex\r | |
738 | )\r | |
192f6d4c | 739 | {\r |
f2bc359c SZ |
740 | INTN Index1;\r |
741 | INTN Index2;\r | |
742 | EFI_GUID *SearchGuid;\r | |
743 | EFI_GUID *CheckGuid;\r | |
744 | EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor;\r | |
745 | \r | |
746 | for (Index1 = NotifyStartIndex; Index1 < NotifyStopIndex; Index1++) {\r | |
747 | if (NotifyType == EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK) {\r | |
748 | NotifyDescriptor = PrivateData->PpiData.CallbackNotifyList.NotifyPtrs[Index1].Notify;\r | |
749 | } else {\r | |
750 | NotifyDescriptor = PrivateData->PpiData.DispatchNotifyList.NotifyPtrs[Index1].Notify;\r | |
751 | }\r | |
192f6d4c | 752 | \r |
753 | CheckGuid = NotifyDescriptor->Guid;\r | |
754 | \r | |
755 | for (Index2 = InstallStartIndex; Index2 < InstallStopIndex; Index2++) {\r | |
f2bc359c | 756 | SearchGuid = PrivateData->PpiData.PpiList.PpiPtrs[Index2].Ppi->Guid;\r |
192f6d4c | 757 | //\r |
758 | // Don't use CompareGuid function here for performance reasons.\r | |
759 | // Instead we compare the GUID as INT32 at a time and branch\r | |
760 | // on the first failed comparison.\r | |
761 | //\r | |
762 | if ((((INT32 *)SearchGuid)[0] == ((INT32 *)CheckGuid)[0]) &&\r | |
763 | (((INT32 *)SearchGuid)[1] == ((INT32 *)CheckGuid)[1]) &&\r | |
764 | (((INT32 *)SearchGuid)[2] == ((INT32 *)CheckGuid)[2]) &&\r | |
765 | (((INT32 *)SearchGuid)[3] == ((INT32 *)CheckGuid)[3])) {\r | |
0e549d5b | 766 | DEBUG ((EFI_D_INFO, "Notify: PPI Guid: %g, Peim notify entry point: %p\n",\r |
58dcdada | 767 | SearchGuid,\r |
192f6d4c | 768 | NotifyDescriptor->Notify\r |
769 | ));\r | |
770 | NotifyDescriptor->Notify (\r | |
284c8400 | 771 | (EFI_PEI_SERVICES **) GetPeiServicesTablePointer (),\r |
192f6d4c | 772 | NotifyDescriptor,\r |
f2bc359c | 773 | (PrivateData->PpiData.PpiList.PpiPtrs[Index2].Ppi)->Ppi\r |
192f6d4c | 774 | );\r |
775 | }\r | |
776 | }\r | |
777 | }\r | |
192f6d4c | 778 | }\r |
779 | \r | |
884200f9 SZ |
780 | /**\r |
781 | Process PpiList from SEC phase.\r | |
782 | \r | |
783 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r | |
784 | @param PpiList Points to a list of one or more PPI descriptors to be installed initially by the PEI core.\r | |
785 | These PPI's will be installed and/or immediately signaled if they are notification type.\r | |
786 | \r | |
787 | **/\r | |
788 | VOID\r | |
789 | ProcessPpiListFromSec (\r | |
790 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
791 | IN CONST EFI_PEI_PPI_DESCRIPTOR *PpiList\r | |
792 | )\r | |
793 | {\r | |
483e2cdd SZ |
794 | EFI_STATUS Status;\r |
795 | EFI_SEC_HOB_DATA_PPI *SecHobDataPpi;\r | |
796 | EFI_HOB_GENERIC_HEADER *SecHobList;\r | |
884200f9 SZ |
797 | \r |
798 | for (;;) {\r | |
799 | if ((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_NOTIFY_TYPES) != 0) {\r | |
800 | //\r | |
801 | // It is a notification PPI.\r | |
802 | //\r | |
803 | Status = InternalPeiNotifyPpi (PeiServices, (CONST EFI_PEI_NOTIFY_DESCRIPTOR *) PpiList, TRUE);\r | |
804 | ASSERT_EFI_ERROR (Status);\r | |
805 | } else {\r | |
806 | //\r | |
807 | // It is a normal PPI.\r | |
808 | //\r | |
809 | Status = InternalPeiInstallPpi (PeiServices, PpiList, TRUE);\r | |
810 | ASSERT_EFI_ERROR (Status);\r | |
811 | }\r | |
812 | \r | |
813 | if ((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) == EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) {\r | |
814 | //\r | |
815 | // Continue until the end of the PPI List.\r | |
816 | //\r | |
817 | break;\r | |
818 | }\r | |
819 | \r | |
820 | PpiList++;\r | |
821 | }\r | |
483e2cdd SZ |
822 | \r |
823 | //\r | |
824 | // If the EFI_SEC_HOB_DATA_PPI is in the list of PPIs passed to the PEI entry point,\r | |
825 | // the PEI Foundation will call the GetHobs() member function and install all HOBs\r | |
826 | // returned into the HOB list. It does this after installing all PPIs passed from SEC\r | |
827 | // into the PPI database and before dispatching any PEIMs.\r | |
828 | //\r | |
829 | Status = PeiLocatePpi (PeiServices, &gEfiSecHobDataPpiGuid, 0, NULL, (VOID **) &SecHobDataPpi);\r | |
830 | if (!EFI_ERROR (Status)) {\r | |
831 | Status = SecHobDataPpi->GetHobs (SecHobDataPpi, &SecHobList);\r | |
832 | if (!EFI_ERROR (Status)) {\r | |
833 | Status = PeiInstallSecHobData (PeiServices, SecHobList);\r | |
834 | ASSERT_EFI_ERROR (Status);\r | |
835 | }\r | |
836 | }\r | |
884200f9 SZ |
837 | }\r |
838 | \r |