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1 | /** @file\r | |
2 | EFI PEI Core PPI services\r | |
3 | \r | |
4 | Copyright (c) 2006, Intel Corporation\r | |
5 | All rights reserved. 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 <PeiMain.h>\r | |
16 | \r | |
17 | /**\r | |
18 | \r | |
19 | Initialize PPI services.\r | |
20 | \r | |
21 | @param PrivateData Pointer to the PEI Core data.\r | |
22 | @param OldCoreData Pointer to old PEI Core data. \r | |
23 | NULL if being run in non-permament memory mode.\r | |
24 | \r | |
25 | **/\r | |
26 | VOID\r | |
27 | InitializePpiServices (\r | |
28 | IN PEI_CORE_INSTANCE *PrivateData,\r | |
29 | IN PEI_CORE_INSTANCE *OldCoreData\r | |
30 | )\r | |
31 | {\r | |
32 | if (OldCoreData == NULL) {\r | |
33 | PrivateData->PpiData.NotifyListEnd = FixedPcdGet32 (PcdPeiCoreMaxPpiSupported)-1;\r | |
34 | PrivateData->PpiData.DispatchListEnd = FixedPcdGet32 (PcdPeiCoreMaxPpiSupported)-1;\r | |
35 | PrivateData->PpiData.LastDispatchedNotify = FixedPcdGet32 (PcdPeiCoreMaxPpiSupported)-1;\r | |
36 | }\r | |
37 | }\r | |
38 | \r | |
39 | /**\r | |
40 | \r | |
41 | Migrate the Hob list from the CAR stack to PEI installed memory.\r | |
42 | \r | |
43 | @param PrivateData Pointer to PeiCore's private data structure.\r | |
44 | @param OldCheckingBottom Bottom of temporary memory range. All Ppi in this range\r | |
45 | will be fixup for PpiData and PpiDescriptor pointer.\r | |
46 | @param OldCheckingTop Top of temporary memory range. All Ppi in this range\r | |
47 | will be fixup for PpiData and PpiDescriptor.\r | |
48 | @param Fixup The address difference between\r | |
49 | the new Hob list and old Hob list.\r | |
50 | \r | |
51 | **/\r | |
52 | VOID\r | |
53 | ConvertPpiPointers (\r | |
54 | IN PEI_CORE_INSTANCE *PrivateData,\r | |
55 | IN UINTN OldCheckingBottom,\r | |
56 | IN UINTN OldCheckingTop,\r | |
57 | IN INTN Fixup\r | |
58 | )\r | |
59 | {\r | |
60 | UINT8 Index;\r | |
61 | PEI_PPI_LIST_POINTERS *PpiPointer;\r | |
62 | \r | |
63 | for (Index = 0; Index < FixedPcdGet32 (PcdPeiCoreMaxPpiSupported); Index++) {\r | |
64 | if (Index < PrivateData->PpiData.PpiListEnd ||\r | |
65 | Index > PrivateData->PpiData.NotifyListEnd) {\r | |
66 | PpiPointer = &PrivateData->PpiData.PpiListPtrs[Index];\r | |
67 | \r | |
68 | if (((UINTN)PpiPointer->Raw < OldCheckingTop) &&\r | |
69 | ((UINTN)PpiPointer->Raw >= OldCheckingBottom)) {\r | |
70 | //\r | |
71 | // Convert the pointer to the PEIM descriptor from the old HOB heap\r | |
72 | // to the relocated HOB heap.\r | |
73 | //\r | |
74 | PpiPointer->Raw = (VOID *) ((UINTN)PpiPointer->Raw + Fixup);\r | |
75 | \r | |
76 | //\r | |
77 | // Only when the PEIM descriptor is in the old HOB should it be necessary\r | |
78 | // to try to convert the pointers in the PEIM descriptor\r | |
79 | //\r | |
80 | \r | |
81 | if (((UINTN)PpiPointer->Ppi->Guid < OldCheckingTop) &&\r | |
82 | ((UINTN)PpiPointer->Ppi->Guid >= OldCheckingBottom)) {\r | |
83 | //\r | |
84 | // Convert the pointer to the GUID in the PPI or NOTIFY descriptor\r | |
85 | // from the old HOB heap to the relocated HOB heap.\r | |
86 | //\r | |
87 | PpiPointer->Ppi->Guid = (VOID *) ((UINTN)PpiPointer->Ppi->Guid + Fixup);\r | |
88 | }\r | |
89 | \r | |
90 | //\r | |
91 | // Assume that no code is located in the temporary memory, so the pointer to\r | |
92 | // the notification function in the NOTIFY descriptor needs not be converted.\r | |
93 | //\r | |
94 | if (Index < PrivateData->PpiData.PpiListEnd &&\r | |
95 | (UINTN)PpiPointer->Ppi->Ppi < OldCheckingTop &&\r | |
96 | (UINTN)PpiPointer->Ppi->Ppi >= OldCheckingBottom) {\r | |
97 | //\r | |
98 | // Convert the pointer to the PPI interface structure in the PPI descriptor\r | |
99 | // from the old HOB heap to the relocated HOB heap.\r | |
100 | //\r | |
101 | PpiPointer->Ppi->Ppi = (VOID *) ((UINTN)PpiPointer->Ppi->Ppi+ Fixup);\r | |
102 | }\r | |
103 | }\r | |
104 | }\r | |
105 | }\r | |
106 | }\r | |
107 | \r | |
108 | /**\r | |
109 | \r | |
110 | This function installs an interface in the PEI PPI database by GUID. \r | |
111 | The purpose of the service is to publish an interface that other parties\r | |
112 | can use to call additional PEIMs.\r | |
113 | \r | |
114 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r | |
115 | @param PpiList Pointer to a list of PEI PPI Descriptors.\r | |
116 | \r | |
117 | @retval EFI_SUCCESS if all PPIs in PpiList are successfully installed.\r | |
118 | @retval EFI_INVALID_PARAMETER if PpiList is NULL pointer\r | |
119 | if any PPI in PpiList is not valid\r | |
120 | @retval EFI_OUT_OF_RESOURCES if there is no more memory resource to install PPI\r | |
121 | \r | |
122 | **/\r | |
123 | EFI_STATUS\r | |
124 | EFIAPI\r | |
125 | PeiInstallPpi (\r | |
126 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
127 | IN CONST EFI_PEI_PPI_DESCRIPTOR *PpiList\r | |
128 | )\r | |
129 | {\r | |
130 | PEI_CORE_INSTANCE *PrivateData;\r | |
131 | INTN Index;\r | |
132 | INTN LastCallbackInstall;\r | |
133 | \r | |
134 | \r | |
135 | if (PpiList == NULL) {\r | |
136 | return EFI_INVALID_PARAMETER;\r | |
137 | }\r | |
138 | \r | |
139 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r | |
140 | \r | |
141 | Index = PrivateData->PpiData.PpiListEnd;\r | |
142 | LastCallbackInstall = Index;\r | |
143 | \r | |
144 | //\r | |
145 | // This is loop installs all PPI descriptors in the PpiList. It is terminated\r | |
146 | // by the EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST being set in the last\r | |
147 | // EFI_PEI_PPI_DESCRIPTOR in the list.\r | |
148 | //\r | |
149 | \r | |
150 | for (;;) {\r | |
151 | //\r | |
152 | // Since PpiData is used for NotifyList and PpiList, max resource\r | |
153 | // is reached if the Install reaches the NotifyList\r | |
154 | //\r | |
155 | if (Index == PrivateData->PpiData.NotifyListEnd + 1) {\r | |
156 | return EFI_OUT_OF_RESOURCES;\r | |
157 | }\r | |
158 | //\r | |
159 | // Check if it is a valid PPI.\r | |
160 | // If not, rollback list to exclude all in this list.\r | |
161 | // Try to indicate which item failed.\r | |
162 | //\r | |
163 | if ((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_PPI) == 0) {\r | |
164 | PrivateData->PpiData.PpiListEnd = LastCallbackInstall;\r | |
165 | DEBUG((EFI_D_ERROR, "ERROR -> InstallPpi: %g %x\n", PpiList->Guid, PpiList->Ppi));\r | |
166 | return EFI_INVALID_PARAMETER;\r | |
167 | }\r | |
168 | \r | |
169 | DEBUG((EFI_D_INFO, "Install PPI: %g\n", PpiList->Guid));\r | |
170 | PrivateData->PpiData.PpiListPtrs[Index].Ppi = (EFI_PEI_PPI_DESCRIPTOR*) PpiList;\r | |
171 | PrivateData->PpiData.PpiListEnd++;\r | |
172 | \r | |
173 | //\r | |
174 | // Continue until the end of the PPI List.\r | |
175 | //\r | |
176 | if ((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) ==\r | |
177 | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) {\r | |
178 | break;\r | |
179 | }\r | |
180 | PpiList++;\r | |
181 | Index++;\r | |
182 | }\r | |
183 | \r | |
184 | //\r | |
185 | // Dispatch any callback level notifies for newly installed PPIs.\r | |
186 | //\r | |
187 | DispatchNotify (\r | |
188 | PrivateData,\r | |
189 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,\r | |
190 | LastCallbackInstall,\r | |
191 | PrivateData->PpiData.PpiListEnd,\r | |
192 | PrivateData->PpiData.DispatchListEnd,\r | |
193 | PrivateData->PpiData.NotifyListEnd\r | |
194 | );\r | |
195 | \r | |
196 | \r | |
197 | return EFI_SUCCESS;\r | |
198 | }\r | |
199 | \r | |
200 | /**\r | |
201 | \r | |
202 | This function reinstalls an interface in the PEI PPI database by GUID. \r | |
203 | The purpose of the service is to publish an interface that other parties can \r | |
204 | use to replace an interface of the same name in the protocol database with a \r | |
205 | different interface.\r | |
206 | \r | |
207 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r | |
208 | @param OldPpi Pointer to the old PEI PPI Descriptors.\r | |
209 | @param NewPpi Pointer to the new PEI PPI Descriptors.\r | |
210 | \r | |
211 | @retval EFI_SUCCESS if the operation was successful\r | |
212 | @retval EFI_INVALID_PARAMETER if OldPpi or NewPpi is NULL\r | |
213 | @retval EFI_INVALID_PARAMETER if NewPpi is not valid\r | |
214 | @retval EFI_NOT_FOUND if the PPI was not in the database\r | |
215 | \r | |
216 | **/\r | |
217 | EFI_STATUS\r | |
218 | EFIAPI\r | |
219 | PeiReInstallPpi (\r | |
220 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
221 | IN CONST EFI_PEI_PPI_DESCRIPTOR *OldPpi,\r | |
222 | IN CONST EFI_PEI_PPI_DESCRIPTOR *NewPpi\r | |
223 | )\r | |
224 | {\r | |
225 | PEI_CORE_INSTANCE *PrivateData;\r | |
226 | INTN Index;\r | |
227 | \r | |
228 | \r | |
229 | if ((OldPpi == NULL) || (NewPpi == NULL)) {\r | |
230 | return EFI_INVALID_PARAMETER;\r | |
231 | }\r | |
232 | \r | |
233 | if ((NewPpi->Flags & EFI_PEI_PPI_DESCRIPTOR_PPI) == 0) {\r | |
234 | return EFI_INVALID_PARAMETER;\r | |
235 | }\r | |
236 | \r | |
237 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r | |
238 | \r | |
239 | //\r | |
240 | // Find the old PPI instance in the database. If we can not find it,\r | |
241 | // return the EFI_NOT_FOUND error.\r | |
242 | //\r | |
243 | for (Index = 0; Index < PrivateData->PpiData.PpiListEnd; Index++) {\r | |
244 | if (OldPpi == PrivateData->PpiData.PpiListPtrs[Index].Ppi) {\r | |
245 | break;\r | |
246 | }\r | |
247 | }\r | |
248 | if (Index == PrivateData->PpiData.PpiListEnd) {\r | |
249 | return EFI_NOT_FOUND;\r | |
250 | }\r | |
251 | \r | |
252 | //\r | |
253 | // Remove the old PPI from the database, add the new one.\r | |
254 | //\r | |
255 | DEBUG((EFI_D_INFO, "Reinstall PPI: %g\n", NewPpi->Guid));\r | |
256 | PrivateData->PpiData.PpiListPtrs[Index].Ppi = (EFI_PEI_PPI_DESCRIPTOR *) NewPpi;\r | |
257 | \r | |
258 | //\r | |
259 | // Dispatch any callback level notifies for the newly installed PPI.\r | |
260 | //\r | |
261 | DispatchNotify (\r | |
262 | PrivateData,\r | |
263 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,\r | |
264 | Index,\r | |
265 | Index+1,\r | |
266 | PrivateData->PpiData.DispatchListEnd,\r | |
267 | PrivateData->PpiData.NotifyListEnd\r | |
268 | );\r | |
269 | \r | |
270 | \r | |
271 | return EFI_SUCCESS;\r | |
272 | }\r | |
273 | \r | |
274 | /**\r | |
275 | \r | |
276 | Locate a given named PPI.\r | |
277 | \r | |
278 | \r | |
279 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r | |
280 | @param Guid Pointer to GUID of the PPI.\r | |
281 | @param Instance Instance Number to discover.\r | |
282 | @param PpiDescriptor Pointer to reference the found descriptor. If not NULL,\r | |
283 | returns a pointer to the descriptor (includes flags, etc)\r | |
284 | @param Ppi Pointer to reference the found PPI\r | |
285 | \r | |
286 | @retval EFI_SUCCESS if the PPI is in the database\r | |
287 | @retval EFI_NOT_FOUND if the PPI is not in the database\r | |
288 | \r | |
289 | **/\r | |
290 | EFI_STATUS\r | |
291 | EFIAPI\r | |
292 | PeiLocatePpi (\r | |
293 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
294 | IN CONST EFI_GUID *Guid,\r | |
295 | IN UINTN Instance,\r | |
296 | IN OUT EFI_PEI_PPI_DESCRIPTOR **PpiDescriptor,\r | |
297 | IN OUT VOID **Ppi\r | |
298 | )\r | |
299 | {\r | |
300 | PEI_CORE_INSTANCE *PrivateData;\r | |
301 | INTN Index;\r | |
302 | EFI_GUID *CheckGuid;\r | |
303 | EFI_PEI_PPI_DESCRIPTOR *TempPtr;\r | |
304 | \r | |
305 | \r | |
306 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r | |
307 | \r | |
308 | //\r | |
309 | // Search the data base for the matching instance of the GUIDed PPI.\r | |
310 | //\r | |
311 | for (Index = 0; Index < PrivateData->PpiData.PpiListEnd; Index++) {\r | |
312 | TempPtr = PrivateData->PpiData.PpiListPtrs[Index].Ppi;\r | |
313 | CheckGuid = TempPtr->Guid;\r | |
314 | \r | |
315 | //\r | |
316 | // Don't use CompareGuid function here for performance reasons.\r | |
317 | // Instead we compare the GUID as INT32 at a time and branch\r | |
318 | // on the first failed comparison.\r | |
319 | //\r | |
320 | if ((((INT32 *)Guid)[0] == ((INT32 *)CheckGuid)[0]) &&\r | |
321 | (((INT32 *)Guid)[1] == ((INT32 *)CheckGuid)[1]) &&\r | |
322 | (((INT32 *)Guid)[2] == ((INT32 *)CheckGuid)[2]) &&\r | |
323 | (((INT32 *)Guid)[3] == ((INT32 *)CheckGuid)[3])) {\r | |
324 | if (Instance == 0) {\r | |
325 | \r | |
326 | if (PpiDescriptor != NULL) {\r | |
327 | *PpiDescriptor = TempPtr;\r | |
328 | }\r | |
329 | \r | |
330 | if (Ppi != NULL) {\r | |
331 | *Ppi = TempPtr->Ppi;\r | |
332 | }\r | |
333 | \r | |
334 | \r | |
335 | return EFI_SUCCESS;\r | |
336 | }\r | |
337 | Instance--;\r | |
338 | }\r | |
339 | }\r | |
340 | \r | |
341 | return EFI_NOT_FOUND;\r | |
342 | }\r | |
343 | \r | |
344 | /**\r | |
345 | \r | |
346 | This function installs a notification service to be called back when a given \r | |
347 | interface is installed or reinstalled. The purpose of the service is to publish \r | |
348 | an interface that other parties can use to call additional PPIs that may materialize later.\r | |
349 | \r | |
350 | @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r | |
351 | @param NotifyList Pointer to list of Descriptors to notify upon.\r | |
352 | \r | |
353 | @retval EFI_SUCCESS if successful\r | |
354 | @retval EFI_OUT_OF_RESOURCES if no space in the database\r | |
355 | @retval EFI_INVALID_PARAMETER if not a good decriptor\r | |
356 | \r | |
357 | **/\r | |
358 | EFI_STATUS\r | |
359 | EFIAPI\r | |
360 | PeiNotifyPpi (\r | |
361 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
362 | IN CONST EFI_PEI_NOTIFY_DESCRIPTOR *NotifyList\r | |
363 | )\r | |
364 | {\r | |
365 | PEI_CORE_INSTANCE *PrivateData;\r | |
366 | INTN Index;\r | |
367 | INTN NotifyIndex;\r | |
368 | INTN LastCallbackNotify;\r | |
369 | EFI_PEI_NOTIFY_DESCRIPTOR *NotifyPtr;\r | |
370 | UINTN NotifyDispatchCount;\r | |
371 | \r | |
372 | \r | |
373 | NotifyDispatchCount = 0;\r | |
374 | \r | |
375 | if (NotifyList == NULL) {\r | |
376 | return EFI_INVALID_PARAMETER;\r | |
377 | }\r | |
378 | \r | |
379 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r | |
380 | \r | |
381 | Index = PrivateData->PpiData.NotifyListEnd;\r | |
382 | LastCallbackNotify = Index;\r | |
383 | \r | |
384 | //\r | |
385 | // This is loop installs all Notify descriptors in the NotifyList. It is\r | |
386 | // terminated by the EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST being set in the last\r | |
387 | // EFI_PEI_NOTIFY_DESCRIPTOR in the list.\r | |
388 | //\r | |
389 | \r | |
390 | for (;;) {\r | |
391 | //\r | |
392 | // Since PpiData is used for NotifyList and InstallList, max resource\r | |
393 | // is reached if the Install reaches the PpiList\r | |
394 | //\r | |
395 | if (Index == PrivateData->PpiData.PpiListEnd - 1) {\r | |
396 | return EFI_OUT_OF_RESOURCES;\r | |
397 | }\r | |
398 | \r | |
399 | //\r | |
400 | // If some of the PPI data is invalid restore original Notify PPI database value\r | |
401 | //\r | |
402 | if ((NotifyList->Flags & EFI_PEI_PPI_DESCRIPTOR_NOTIFY_TYPES) == 0) {\r | |
403 | PrivateData->PpiData.NotifyListEnd = LastCallbackNotify;\r | |
404 | DEBUG((EFI_D_ERROR, "ERROR -> InstallNotify: %g %x\n", NotifyList->Guid, NotifyList->Notify));\r | |
405 | return EFI_INVALID_PARAMETER;\r | |
406 | }\r | |
407 | \r | |
408 | if ((NotifyList->Flags & EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH) != 0) {\r | |
409 | NotifyDispatchCount ++;\r | |
410 | }\r | |
411 | \r | |
412 | PrivateData->PpiData.PpiListPtrs[Index].Notify = (EFI_PEI_NOTIFY_DESCRIPTOR *) NotifyList;\r | |
413 | \r | |
414 | PrivateData->PpiData.NotifyListEnd--;\r | |
415 | DEBUG((EFI_D_INFO, "Register PPI Notify: %g\n", NotifyList->Guid));\r | |
416 | if ((NotifyList->Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) ==\r | |
417 | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) {\r | |
418 | break;\r | |
419 | }\r | |
420 | //\r | |
421 | // Go the next descriptor. Remember the NotifyList moves down.\r | |
422 | //\r | |
423 | NotifyList++;\r | |
424 | Index--;\r | |
425 | }\r | |
426 | \r | |
427 | //\r | |
428 | // If there is Dispatch Notify PPI installed put them on the bottom\r | |
429 | //\r | |
430 | if (NotifyDispatchCount > 0) {\r | |
431 | for (NotifyIndex = LastCallbackNotify; NotifyIndex > PrivateData->PpiData.NotifyListEnd; NotifyIndex--) {\r | |
432 | if ((PrivateData->PpiData.PpiListPtrs[NotifyIndex].Notify->Flags & EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH) != 0) {\r | |
433 | NotifyPtr = PrivateData->PpiData.PpiListPtrs[NotifyIndex].Notify;\r | |
434 | \r | |
435 | for (Index = NotifyIndex; Index < PrivateData->PpiData.DispatchListEnd; Index++){\r | |
436 | PrivateData->PpiData.PpiListPtrs[Index].Notify = PrivateData->PpiData.PpiListPtrs[Index + 1].Notify;\r | |
437 | }\r | |
438 | PrivateData->PpiData.PpiListPtrs[Index].Notify = NotifyPtr;\r | |
439 | PrivateData->PpiData.DispatchListEnd--;\r | |
440 | }\r | |
441 | }\r | |
442 | \r | |
443 | LastCallbackNotify -= NotifyDispatchCount;\r | |
444 | }\r | |
445 | \r | |
446 | //\r | |
447 | // Dispatch any callback level notifies for all previously installed PPIs.\r | |
448 | //\r | |
449 | DispatchNotify (\r | |
450 | PrivateData,\r | |
451 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,\r | |
452 | 0,\r | |
453 | PrivateData->PpiData.PpiListEnd,\r | |
454 | LastCallbackNotify,\r | |
455 | PrivateData->PpiData.NotifyListEnd\r | |
456 | );\r | |
457 | \r | |
458 | return EFI_SUCCESS;\r | |
459 | }\r | |
460 | \r | |
461 | \r | |
462 | /**\r | |
463 | \r | |
464 | Process the Notify List at dispatch level.\r | |
465 | \r | |
466 | @param PrivateData PeiCore's private data structure.\r | |
467 | \r | |
468 | **/\r | |
469 | VOID\r | |
470 | ProcessNotifyList (\r | |
471 | IN PEI_CORE_INSTANCE *PrivateData\r | |
472 | )\r | |
473 | {\r | |
474 | INTN TempValue;\r | |
475 | \r | |
476 | while (TRUE) {\r | |
477 | //\r | |
478 | // Check if the PEIM that was just dispatched resulted in any\r | |
479 | // Notifies getting installed. If so, go process any dispatch\r | |
480 | // level Notifies that match the previouly installed PPIs.\r | |
481 | // Use "while" instead of "if" since DispatchNotify can modify\r | |
482 | // DispatchListEnd (with NotifyPpi) so we have to iterate until the same.\r | |
483 | //\r | |
484 | while (PrivateData->PpiData.LastDispatchedNotify != PrivateData->PpiData.DispatchListEnd) {\r | |
485 | TempValue = PrivateData->PpiData.DispatchListEnd;\r | |
486 | DispatchNotify (\r | |
487 | PrivateData,\r | |
488 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH,\r | |
489 | 0,\r | |
490 | PrivateData->PpiData.LastDispatchedInstall,\r | |
491 | PrivateData->PpiData.LastDispatchedNotify,\r | |
492 | PrivateData->PpiData.DispatchListEnd\r | |
493 | );\r | |
494 | PrivateData->PpiData.LastDispatchedNotify = TempValue;\r | |
495 | }\r | |
496 | \r | |
497 | \r | |
498 | //\r | |
499 | // Check if the PEIM that was just dispatched resulted in any\r | |
500 | // PPIs getting installed. If so, go process any dispatch\r | |
501 | // level Notifies that match the installed PPIs.\r | |
502 | // Use "while" instead of "if" since DispatchNotify can modify\r | |
503 | // PpiListEnd (with InstallPpi) so we have to iterate until the same.\r | |
504 | //\r | |
505 | while (PrivateData->PpiData.LastDispatchedInstall != PrivateData->PpiData.PpiListEnd) {\r | |
506 | TempValue = PrivateData->PpiData.PpiListEnd;\r | |
507 | DispatchNotify (\r | |
508 | PrivateData,\r | |
509 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH,\r | |
510 | PrivateData->PpiData.LastDispatchedInstall,\r | |
511 | PrivateData->PpiData.PpiListEnd,\r | |
512 | FixedPcdGet32 (PcdPeiCoreMaxPpiSupported)-1,\r | |
513 | PrivateData->PpiData.DispatchListEnd\r | |
514 | );\r | |
515 | PrivateData->PpiData.LastDispatchedInstall = TempValue;\r | |
516 | }\r | |
517 | \r | |
518 | if (PrivateData->PpiData.LastDispatchedNotify == PrivateData->PpiData.DispatchListEnd) {\r | |
519 | break;\r | |
520 | }\r | |
521 | }\r | |
522 | return;\r | |
523 | }\r | |
524 | \r | |
525 | /**\r | |
526 | \r | |
527 | Dispatch notifications.\r | |
528 | \r | |
529 | @param PrivateData PeiCore's private data structure\r | |
530 | @param NotifyType Type of notify to fire.\r | |
531 | @param InstallStartIndex Install Beginning index.\r | |
532 | @param InstallStopIndex Install Ending index.\r | |
533 | @param NotifyStartIndex Notify Beginning index.\r | |
534 | @param NotifyStopIndex Notify Ending index.\r | |
535 | \r | |
536 | **/\r | |
537 | VOID\r | |
538 | DispatchNotify (\r | |
539 | IN PEI_CORE_INSTANCE *PrivateData,\r | |
540 | IN UINTN NotifyType,\r | |
541 | IN INTN InstallStartIndex,\r | |
542 | IN INTN InstallStopIndex,\r | |
543 | IN INTN NotifyStartIndex,\r | |
544 | IN INTN NotifyStopIndex\r | |
545 | )\r | |
546 | {\r | |
547 | INTN Index1;\r | |
548 | INTN Index2;\r | |
549 | EFI_GUID *SearchGuid;\r | |
550 | EFI_GUID *CheckGuid;\r | |
551 | EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor;\r | |
552 | \r | |
553 | //\r | |
554 | // Remember that Installs moves up and Notifies moves down.\r | |
555 | //\r | |
556 | for (Index1 = NotifyStartIndex; Index1 > NotifyStopIndex; Index1--) {\r | |
557 | NotifyDescriptor = PrivateData->PpiData.PpiListPtrs[Index1].Notify;\r | |
558 | \r | |
559 | CheckGuid = NotifyDescriptor->Guid;\r | |
560 | \r | |
561 | for (Index2 = InstallStartIndex; Index2 < InstallStopIndex; Index2++) {\r | |
562 | SearchGuid = PrivateData->PpiData.PpiListPtrs[Index2].Ppi->Guid;\r | |
563 | //\r | |
564 | // Don't use CompareGuid function here for performance reasons.\r | |
565 | // Instead we compare the GUID as INT32 at a time and branch\r | |
566 | // on the first failed comparison.\r | |
567 | //\r | |
568 | if ((((INT32 *)SearchGuid)[0] == ((INT32 *)CheckGuid)[0]) &&\r | |
569 | (((INT32 *)SearchGuid)[1] == ((INT32 *)CheckGuid)[1]) &&\r | |
570 | (((INT32 *)SearchGuid)[2] == ((INT32 *)CheckGuid)[2]) &&\r | |
571 | (((INT32 *)SearchGuid)[3] == ((INT32 *)CheckGuid)[3])) {\r | |
572 | DEBUG ((EFI_D_INFO, "Notify: PPI Guid: %g, Peim notify entry point: %x\n",\r | |
573 | SearchGuid,\r | |
574 | NotifyDescriptor->Notify\r | |
575 | ));\r | |
576 | NotifyDescriptor->Notify (\r | |
577 | GetPeiServicesTablePointer (),\r | |
578 | NotifyDescriptor,\r | |
579 | (PrivateData->PpiData.PpiListPtrs[Index2].Ppi)->Ppi\r | |
580 | );\r | |
581 | }\r | |
582 | }\r | |
583 | }\r | |
584 | }\r | |
585 | \r |