878ddf1f |
1 | /*++\r |
2 | \r |
3 | Copyright (c) 2006, Intel Corporation \r |
4 | All rights reserved. This program and the accompanying materials \r |
5 | are licensed and made available under the terms and conditions of the BSD License \r |
6 | which accompanies this distribution. The full text of the license may be found at \r |
7 | http://opensource.org/licenses/bsd-license.php \r |
8 | \r |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
11 | \r |
12 | Module Name:\r |
13 | \r |
14 | Ppi.c\r |
15 | \r |
16 | Abstract:\r |
17 | \r |
18 | EFI PEI Core PPI services\r |
19 | \r |
20 | Revision History\r |
21 | \r |
22 | --*/\r |
23 | \r |
24 | #include <PeiMain.h>\r |
25 | \r |
26 | VOID\r |
27 | InitializePpiServices (\r |
28 | IN EFI_PEI_SERVICES **PeiServices,\r |
29 | IN PEI_CORE_INSTANCE *OldCoreData\r |
30 | )\r |
31 | /*++\r |
32 | \r |
33 | Routine Description:\r |
34 | \r |
35 | Initialize PPI services.\r |
36 | \r |
37 | Arguments:\r |
38 | \r |
39 | PeiServices - The PEI core services table.\r |
40 | OldCoreData - Pointer to the PEI Core data.\r |
41 | NULL if being run in non-permament memory mode.\r |
42 | \r |
43 | Returns:\r |
44 | Nothing\r |
45 | \r |
46 | --*/\r |
47 | {\r |
48 | PEI_CORE_INSTANCE *PrivateData;\r |
49 | \r |
50 | if (OldCoreData == NULL) {\r |
51 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r |
52 | \r |
53 | PrivateData->PpiData.NotifyListEnd = MAX_PPI_DESCRIPTORS-1;\r |
54 | PrivateData->PpiData.DispatchListEnd = MAX_PPI_DESCRIPTORS-1;\r |
55 | PrivateData->PpiData.LastDispatchedNotify = MAX_PPI_DESCRIPTORS-1;\r |
56 | }\r |
57 | \r |
58 | return; \r |
59 | }\r |
60 | \r |
61 | VOID\r |
62 | ConvertPpiPointers (\r |
63 | IN EFI_PEI_SERVICES **PeiServices,\r |
64 | IN EFI_HOB_HANDOFF_INFO_TABLE *OldHandOffHob,\r |
65 | IN EFI_HOB_HANDOFF_INFO_TABLE *NewHandOffHob\r |
66 | )\r |
67 | /*++\r |
68 | \r |
69 | Routine Description:\r |
70 | \r |
71 | Migrate the Hob list from the CAR stack to PEI installed memory.\r |
72 | \r |
73 | Arguments:\r |
74 | \r |
75 | PeiServices - The PEI core services table.\r |
76 | OldHandOffHob - The old handoff HOB list.\r |
77 | NewHandOffHob - The new handoff HOB list.\r |
78 | \r |
79 | Returns:\r |
80 | \r |
81 | --*/\r |
82 | {\r |
83 | PEI_CORE_INSTANCE *PrivateData;\r |
84 | UINT8 Index;\r |
85 | PEI_PPI_LIST_POINTERS *PpiPointer;\r |
86 | UINTN Fixup;\r |
87 | \r |
88 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r |
89 | \r |
90 | Fixup = (UINTN)NewHandOffHob - (UINTN)OldHandOffHob;\r |
91 | \r |
92 | for (Index = 0; Index < MAX_PPI_DESCRIPTORS; Index++) {\r |
93 | if (Index < PrivateData->PpiData.PpiListEnd ||\r |
94 | Index > PrivateData->PpiData.NotifyListEnd) {\r |
95 | PpiPointer = &PrivateData->PpiData.PpiListPtrs[Index];\r |
96 | \r |
97 | if (((UINTN)PpiPointer->Raw < (UINTN)OldHandOffHob->EfiFreeMemoryBottom) && \r |
98 | ((UINTN)PpiPointer->Raw >= (UINTN)OldHandOffHob)) {\r |
99 | //\r |
100 | // Convert the pointer to the PEIM descriptor from the old HOB heap\r |
101 | // to the relocated HOB heap.\r |
102 | //\r |
103 | PpiPointer->Raw = (VOID *) ((UINTN)PpiPointer->Raw + Fixup);\r |
104 | \r |
105 | //\r |
106 | // Only when the PEIM descriptor is in the old HOB should it be necessary\r |
107 | // to try to convert the pointers in the PEIM descriptor\r |
108 | //\r |
109 | \r |
110 | if (((UINTN)PpiPointer->Ppi->Guid < (UINTN)OldHandOffHob->EfiFreeMemoryBottom) && \r |
111 | ((UINTN)PpiPointer->Ppi->Guid >= (UINTN)OldHandOffHob)) {\r |
112 | //\r |
113 | // Convert the pointer to the GUID in the PPI or NOTIFY descriptor\r |
114 | // from the old HOB heap to the relocated HOB heap.\r |
115 | //\r |
116 | PpiPointer->Ppi->Guid = (VOID *) ((UINTN)PpiPointer->Ppi->Guid + Fixup);\r |
117 | }\r |
118 | \r |
119 | //\r |
120 | // Assume that no code is located in the temporary memory, so the pointer to\r |
121 | // the notification function in the NOTIFY descriptor needs not be converted.\r |
122 | //\r |
123 | if (Index < PrivateData->PpiData.PpiListEnd &&\r |
124 | (UINTN)PpiPointer->Ppi->Ppi < (UINTN)OldHandOffHob->EfiFreeMemoryBottom &&\r |
125 | (UINTN)PpiPointer->Ppi->Ppi >= (UINTN)OldHandOffHob) {\r |
126 | //\r |
127 | // Convert the pointer to the PPI interface structure in the PPI descriptor\r |
128 | // from the old HOB heap to the relocated HOB heap.\r |
129 | //\r |
130 | PpiPointer->Ppi->Ppi = (VOID *) ((UINTN)PpiPointer->Ppi->Ppi+ Fixup); \r |
131 | }\r |
132 | }\r |
133 | }\r |
134 | }\r |
135 | }\r |
136 | \r |
137 | \r |
138 | \r |
139 | EFI_STATUS\r |
140 | EFIAPI\r |
141 | PeiInstallPpi (\r |
142 | IN EFI_PEI_SERVICES **PeiServices,\r |
143 | IN EFI_PEI_PPI_DESCRIPTOR *PpiList\r |
144 | )\r |
145 | /*++\r |
146 | \r |
147 | Routine Description:\r |
148 | \r |
149 | Install PPI services.\r |
150 | \r |
151 | Arguments:\r |
152 | \r |
153 | PeiServices - Pointer to the PEI Service Table\r |
154 | PpiList - Pointer to a list of PEI PPI Descriptors.\r |
155 | \r |
156 | Returns:\r |
157 | \r |
158 | EFI_SUCCESS - if all PPIs in PpiList are successfully installed.\r |
159 | EFI_INVALID_PARAMETER - if PpiList is NULL pointer\r |
160 | EFI_INVALID_PARAMETER - if any PPI in PpiList is not valid\r |
161 | EFI_OUT_OF_RESOURCES - if there is no more memory resource to install PPI\r |
162 | \r |
163 | --*/\r |
164 | {\r |
165 | PEI_CORE_INSTANCE *PrivateData;\r |
166 | INTN Index;\r |
167 | INTN LastCallbackInstall;\r |
168 | \r |
169 | \r |
170 | if (PpiList == NULL) {\r |
171 | return EFI_INVALID_PARAMETER;\r |
172 | }\r |
173 | \r |
174 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r |
175 | \r |
176 | Index = PrivateData->PpiData.PpiListEnd;\r |
177 | LastCallbackInstall = Index;\r |
178 | \r |
179 | //\r |
180 | // This is loop installs all PPI descriptors in the PpiList. It is terminated\r |
181 | // by the EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST being set in the last\r |
182 | // EFI_PEI_PPI_DESCRIPTOR in the list.\r |
183 | //\r |
184 | \r |
185 | for (;;) {\r |
186 | //\r |
187 | // Since PpiData is used for NotifyList and InstallList, max resource\r |
188 | // is reached if the Install reaches the NotifyList\r |
189 | //\r |
190 | if (Index == PrivateData->PpiData.NotifyListEnd + 1) {\r |
191 | return EFI_OUT_OF_RESOURCES;\r |
192 | }\r |
193 | //\r |
194 | // Check if it is a valid PPI. \r |
195 | // If not, rollback list to exclude all in this list.\r |
196 | // Try to indicate which item failed.\r |
197 | //\r |
198 | if ((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_PPI) == 0) {\r |
199 | PrivateData->PpiData.PpiListEnd = LastCallbackInstall;\r |
200 | DEBUG((EFI_D_INFO, "ERROR -> InstallPpi: %g %x\n", PpiList->Guid, PpiList->Ppi));\r |
201 | return EFI_INVALID_PARAMETER;\r |
202 | } \r |
203 | \r |
204 | DEBUG((EFI_D_INFO, "Install PPI: %g\n", PpiList->Guid)); \r |
205 | PrivateData->PpiData.PpiListPtrs[Index].Ppi = PpiList; \r |
206 | PrivateData->PpiData.PpiListEnd++;\r |
207 | \r |
208 | //\r |
209 | // Continue until the end of the PPI List.\r |
210 | //\r |
211 | if ((PpiList->Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) == \r |
212 | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) {\r |
213 | break;\r |
214 | }\r |
215 | PpiList++;\r |
216 | Index++;\r |
217 | }\r |
218 | \r |
219 | //\r |
220 | // Dispatch any callback level notifies for newly installed PPIs.\r |
221 | //\r |
222 | DispatchNotify (\r |
223 | PeiServices,\r |
224 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,\r |
225 | LastCallbackInstall,\r |
226 | PrivateData->PpiData.PpiListEnd,\r |
227 | PrivateData->PpiData.DispatchListEnd, \r |
228 | PrivateData->PpiData.NotifyListEnd\r |
229 | );\r |
230 | \r |
231 | \r |
232 | return EFI_SUCCESS;\r |
233 | }\r |
234 | \r |
235 | \r |
236 | EFI_STATUS\r |
237 | EFIAPI\r |
238 | PeiReInstallPpi (\r |
239 | IN EFI_PEI_SERVICES **PeiServices,\r |
240 | IN EFI_PEI_PPI_DESCRIPTOR *OldPpi,\r |
241 | IN EFI_PEI_PPI_DESCRIPTOR *NewPpi\r |
242 | )\r |
243 | /*++\r |
244 | \r |
245 | Routine Description:\r |
246 | \r |
247 | Re-Install PPI services.\r |
248 | \r |
249 | Arguments:\r |
250 | \r |
251 | PeiServices - Pointer to the PEI Service Table\r |
252 | OldPpi - Pointer to the old PEI PPI Descriptors.\r |
253 | NewPpi - Pointer to the new PEI PPI Descriptors.\r |
254 | \r |
255 | Returns:\r |
256 | \r |
257 | EFI_SUCCESS - if the operation was successful\r |
258 | EFI_INVALID_PARAMETER - if OldPpi or NewPpi is NULL\r |
259 | EFI_INVALID_PARAMETER - if NewPpi is not valid\r |
260 | EFI_NOT_FOUND - if the PPI was not in the database\r |
261 | \r |
262 | --*/\r |
263 | {\r |
264 | PEI_CORE_INSTANCE *PrivateData;\r |
265 | INTN Index;\r |
266 | \r |
267 | \r |
268 | if ((OldPpi == NULL) || (NewPpi == NULL)) {\r |
269 | return EFI_INVALID_PARAMETER;\r |
270 | }\r |
271 | \r |
272 | if ((NewPpi->Flags & EFI_PEI_PPI_DESCRIPTOR_PPI) == 0) {\r |
273 | return EFI_INVALID_PARAMETER;\r |
274 | }\r |
275 | \r |
276 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r |
277 | \r |
278 | //\r |
279 | // Find the old PPI instance in the database. If we can not find it,\r |
280 | // return the EFI_NOT_FOUND error.\r |
281 | //\r |
282 | for (Index = 0; Index < PrivateData->PpiData.PpiListEnd; Index++) {\r |
283 | if (OldPpi == PrivateData->PpiData.PpiListPtrs[Index].Ppi) {\r |
284 | break;\r |
285 | }\r |
286 | }\r |
287 | if (Index == PrivateData->PpiData.PpiListEnd) {\r |
288 | return EFI_NOT_FOUND;\r |
289 | }\r |
290 | \r |
291 | //\r |
292 | // Remove the old PPI from the database, add the new one.\r |
293 | // \r |
294 | DEBUG((EFI_D_INFO, "Reinstall PPI: %g\n", NewPpi->Guid));\r |
295 | PrivateData->PpiData.PpiListPtrs[Index].Ppi = NewPpi;\r |
296 | \r |
297 | //\r |
298 | // Dispatch any callback level notifies for the newly installed PPI.\r |
299 | //\r |
300 | DispatchNotify (\r |
301 | PeiServices,\r |
302 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,\r |
303 | Index,\r |
304 | Index+1,\r |
305 | PrivateData->PpiData.DispatchListEnd, \r |
306 | PrivateData->PpiData.NotifyListEnd\r |
307 | );\r |
308 | \r |
309 | \r |
310 | return EFI_SUCCESS;\r |
311 | }\r |
312 | \r |
313 | \r |
314 | EFI_STATUS\r |
315 | EFIAPI\r |
316 | PeiLocatePpi (\r |
317 | IN EFI_PEI_SERVICES **PeiServices,\r |
318 | IN EFI_GUID *Guid,\r |
319 | IN UINTN Instance,\r |
320 | IN OUT EFI_PEI_PPI_DESCRIPTOR **PpiDescriptor,\r |
321 | IN OUT VOID **Ppi\r |
322 | )\r |
323 | /*++\r |
324 | \r |
325 | Routine Description:\r |
326 | \r |
327 | Locate a given named PPI.\r |
328 | \r |
329 | Arguments:\r |
330 | \r |
331 | PeiServices - Pointer to the PEI Service Table\r |
332 | Guid - Pointer to GUID of the PPI.\r |
333 | Instance - Instance Number to discover.\r |
334 | PpiDescriptor - Pointer to reference the found descriptor. If not NULL,\r |
335 | returns a pointer to the descriptor (includes flags, etc)\r |
336 | Ppi - Pointer to reference the found PPI\r |
337 | \r |
338 | Returns:\r |
339 | \r |
340 | Status - EFI_SUCCESS if the PPI is in the database \r |
341 | EFI_NOT_FOUND if the PPI is not in the database\r |
342 | --*/\r |
343 | {\r |
344 | PEI_CORE_INSTANCE *PrivateData;\r |
345 | INTN Index;\r |
346 | EFI_GUID *CheckGuid;\r |
347 | EFI_PEI_PPI_DESCRIPTOR *TempPtr;\r |
348 | \r |
349 | \r |
350 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r |
351 | \r |
352 | //\r |
353 | // Search the data base for the matching instance of the GUIDed PPI.\r |
354 | //\r |
355 | for (Index = 0; Index < PrivateData->PpiData.PpiListEnd; Index++) {\r |
356 | TempPtr = PrivateData->PpiData.PpiListPtrs[Index].Ppi;\r |
357 | CheckGuid = TempPtr->Guid;\r |
358 | \r |
359 | //\r |
360 | // Don't use CompareGuid function here for performance reasons.\r |
361 | // Instead we compare the GUID as INT32 at a time and branch\r |
362 | // on the first failed comparison.\r |
363 | //\r |
364 | if ((((INT32 *)Guid)[0] == ((INT32 *)CheckGuid)[0]) &&\r |
365 | (((INT32 *)Guid)[1] == ((INT32 *)CheckGuid)[1]) &&\r |
366 | (((INT32 *)Guid)[2] == ((INT32 *)CheckGuid)[2]) &&\r |
367 | (((INT32 *)Guid)[3] == ((INT32 *)CheckGuid)[3])) {\r |
368 | if (Instance == 0) {\r |
369 | \r |
370 | if (PpiDescriptor != NULL) {\r |
371 | *PpiDescriptor = TempPtr;\r |
372 | }\r |
373 | \r |
374 | if (Ppi != NULL) {\r |
375 | *Ppi = TempPtr->Ppi;\r |
376 | }\r |
377 | \r |
378 | \r |
379 | return EFI_SUCCESS;\r |
380 | }\r |
381 | Instance--;\r |
382 | }\r |
383 | }\r |
384 | \r |
385 | return EFI_NOT_FOUND;\r |
386 | }\r |
387 | \r |
388 | \r |
389 | EFI_STATUS\r |
390 | EFIAPI\r |
391 | PeiNotifyPpi (\r |
392 | IN EFI_PEI_SERVICES **PeiServices,\r |
393 | IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyList\r |
394 | )\r |
395 | /*++\r |
396 | \r |
397 | Routine Description:\r |
398 | \r |
399 | Install a notification for a given PPI.\r |
400 | \r |
401 | Arguments:\r |
402 | \r |
403 | PeiServices - Pointer to the PEI Service Table\r |
404 | NotifyList - Pointer to list of Descriptors to notify upon.\r |
405 | \r |
406 | Returns:\r |
407 | \r |
408 | Status - EFI_SUCCESS if successful\r |
409 | EFI_OUT_OF_RESOURCES if no space in the database\r |
410 | EFI_INVALID_PARAMETER if not a good decriptor\r |
411 | \r |
412 | --*/\r |
413 | {\r |
414 | PEI_CORE_INSTANCE *PrivateData;\r |
415 | INTN Index;\r |
416 | INTN NotifyIndex;\r |
417 | INTN LastCallbackNotify;\r |
418 | EFI_PEI_NOTIFY_DESCRIPTOR *NotifyPtr;\r |
419 | UINTN NotifyDispatchCount;\r |
420 | \r |
421 | \r |
422 | NotifyDispatchCount = 0;\r |
423 | \r |
424 | if (NotifyList == NULL) {\r |
425 | return EFI_INVALID_PARAMETER;\r |
426 | }\r |
427 | \r |
428 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r |
429 | \r |
430 | Index = PrivateData->PpiData.NotifyListEnd;\r |
431 | LastCallbackNotify = Index;\r |
432 | \r |
433 | //\r |
434 | // This is loop installs all Notify descriptors in the NotifyList. It is\r |
435 | // terminated by the EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST being set in the last\r |
436 | // EFI_PEI_NOTIFY_DESCRIPTOR in the list.\r |
437 | //\r |
438 | \r |
439 | for (;;) {\r |
440 | //\r |
441 | // Since PpiData is used for NotifyList and InstallList, max resource\r |
442 | // is reached if the Install reaches the PpiList\r |
443 | //\r |
444 | if (Index == PrivateData->PpiData.PpiListEnd - 1) {\r |
445 | return EFI_OUT_OF_RESOURCES;\r |
446 | }\r |
447 | \r |
448 | //\r |
449 | // If some of the PPI data is invalid restore original Notify PPI database value\r |
450 | //\r |
451 | if ((NotifyList->Flags & EFI_PEI_PPI_DESCRIPTOR_NOTIFY_TYPES) == 0) {\r |
452 | PrivateData->PpiData.NotifyListEnd = LastCallbackNotify;\r |
453 | DEBUG((EFI_D_INFO, "ERROR -> InstallNotify: %g %x\n", NotifyList->Guid, NotifyList->Notify));\r |
454 | return EFI_INVALID_PARAMETER;\r |
455 | }\r |
456 | \r |
457 | if ((NotifyList->Flags & EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH) != 0) {\r |
458 | NotifyDispatchCount ++; \r |
459 | } \r |
460 | \r |
461 | PrivateData->PpiData.PpiListPtrs[Index].Notify = NotifyList; \r |
462 | \r |
463 | PrivateData->PpiData.NotifyListEnd--;\r |
464 | DEBUG((EFI_D_INFO, "Register PPI Notify: %g\n", NotifyList->Guid));\r |
465 | if ((NotifyList->Flags & EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) ==\r |
466 | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST) {\r |
467 | break;\r |
468 | }\r |
469 | //\r |
470 | // Go the next descriptor. Remember the NotifyList moves down.\r |
471 | //\r |
472 | NotifyList++;\r |
473 | Index--;\r |
474 | }\r |
475 | \r |
476 | //\r |
477 | // If there is Dispatch Notify PPI installed put them on the bottom \r |
478 | //\r |
479 | if (NotifyDispatchCount > 0) {\r |
480 | for (NotifyIndex = LastCallbackNotify; NotifyIndex > PrivateData->PpiData.NotifyListEnd; NotifyIndex--) { \r |
481 | if ((PrivateData->PpiData.PpiListPtrs[NotifyIndex].Notify->Flags & EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH) != 0) {\r |
482 | NotifyPtr = PrivateData->PpiData.PpiListPtrs[NotifyIndex].Notify;\r |
483 | \r |
484 | for (Index = NotifyIndex; Index < PrivateData->PpiData.DispatchListEnd; Index++){\r |
485 | PrivateData->PpiData.PpiListPtrs[Index].Notify = PrivateData->PpiData.PpiListPtrs[Index + 1].Notify;\r |
486 | }\r |
487 | PrivateData->PpiData.PpiListPtrs[Index].Notify = NotifyPtr;\r |
488 | PrivateData->PpiData.DispatchListEnd--; \r |
489 | }\r |
490 | }\r |
491 | \r |
492 | LastCallbackNotify -= NotifyDispatchCount; \r |
493 | }\r |
494 | \r |
495 | //\r |
496 | // Dispatch any callback level notifies for all previously installed PPIs.\r |
497 | //\r |
498 | DispatchNotify (\r |
499 | PeiServices,\r |
500 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK,\r |
501 | 0,\r |
502 | PrivateData->PpiData.PpiListEnd,\r |
503 | LastCallbackNotify,\r |
504 | PrivateData->PpiData.NotifyListEnd\r |
505 | );\r |
506 | \r |
507 | \r |
508 | return EFI_SUCCESS;\r |
509 | }\r |
510 | \r |
511 | \r |
512 | VOID\r |
513 | ProcessNotifyList (\r |
514 | IN EFI_PEI_SERVICES **PeiServices\r |
515 | )\r |
516 | /*++\r |
517 | \r |
518 | Routine Description:\r |
519 | \r |
520 | Process the Notify List at dispatch level.\r |
521 | \r |
522 | Arguments:\r |
523 | \r |
524 | PeiServices - Pointer to the PEI Service Table\r |
525 | \r |
526 | Returns:\r |
527 | \r |
528 | --*/\r |
529 | \r |
530 | {\r |
531 | PEI_CORE_INSTANCE *PrivateData;\r |
532 | INTN TempValue;\r |
533 | \r |
534 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r |
535 | \r |
536 | \r |
537 | while (TRUE) {\r |
538 | //\r |
539 | // Check if the PEIM that was just dispatched resulted in any\r |
540 | // Notifies getting installed. If so, go process any dispatch\r |
541 | // level Notifies that match the previouly installed PPIs.\r |
542 | // Use "while" instead of "if" since DispatchNotify can modify \r |
543 | // DispatchListEnd (with NotifyPpi) so we have to iterate until the same.\r |
544 | //\r |
545 | while (PrivateData->PpiData.LastDispatchedNotify != PrivateData->PpiData.DispatchListEnd) {\r |
546 | TempValue = PrivateData->PpiData.DispatchListEnd;\r |
547 | DispatchNotify (\r |
548 | PeiServices,\r |
549 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH,\r |
550 | 0,\r |
551 | PrivateData->PpiData.LastDispatchedInstall,\r |
552 | PrivateData->PpiData.LastDispatchedNotify,\r |
553 | PrivateData->PpiData.DispatchListEnd\r |
554 | );\r |
555 | PrivateData->PpiData.LastDispatchedNotify = TempValue;\r |
556 | }\r |
557 | \r |
558 | \r |
559 | //\r |
560 | // Check if the PEIM that was just dispatched resulted in any\r |
561 | // PPIs getting installed. If so, go process any dispatch\r |
562 | // level Notifies that match the installed PPIs.\r |
563 | // Use "while" instead of "if" since DispatchNotify can modify \r |
564 | // PpiListEnd (with InstallPpi) so we have to iterate until the same.\r |
565 | //\r |
566 | while (PrivateData->PpiData.LastDispatchedInstall != PrivateData->PpiData.PpiListEnd) {\r |
567 | TempValue = PrivateData->PpiData.PpiListEnd;\r |
568 | DispatchNotify (\r |
569 | PeiServices,\r |
570 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_DISPATCH,\r |
571 | PrivateData->PpiData.LastDispatchedInstall,\r |
572 | PrivateData->PpiData.PpiListEnd,\r |
573 | MAX_PPI_DESCRIPTORS-1,\r |
574 | PrivateData->PpiData.DispatchListEnd\r |
575 | );\r |
576 | PrivateData->PpiData.LastDispatchedInstall = TempValue;\r |
577 | }\r |
578 | \r |
579 | if (PrivateData->PpiData.LastDispatchedNotify == PrivateData->PpiData.DispatchListEnd) {\r |
580 | break;\r |
581 | }\r |
582 | } \r |
583 | return;\r |
584 | }\r |
585 | \r |
586 | VOID\r |
587 | DispatchNotify (\r |
588 | IN EFI_PEI_SERVICES **PeiServices,\r |
589 | IN UINTN NotifyType,\r |
590 | IN INTN InstallStartIndex,\r |
591 | IN INTN InstallStopIndex,\r |
592 | IN INTN NotifyStartIndex,\r |
593 | IN INTN NotifyStopIndex\r |
594 | )\r |
595 | /*++\r |
596 | \r |
597 | Routine Description:\r |
598 | \r |
599 | Dispatch notifications.\r |
600 | \r |
601 | Arguments:\r |
602 | \r |
603 | PeiServices - Pointer to the PEI Service Table\r |
604 | NotifyType - Type of notify to fire.\r |
605 | InstallStartIndex - Install Beginning index.\r |
606 | InstallStopIndex - Install Ending index.\r |
607 | NotifyStartIndex - Notify Beginning index.\r |
608 | NotifyStopIndex - Notify Ending index.\r |
609 | \r |
610 | Returns: None\r |
611 | \r |
612 | --*/\r |
613 | \r |
614 | {\r |
615 | PEI_CORE_INSTANCE *PrivateData;\r |
616 | INTN Index1;\r |
617 | INTN Index2;\r |
618 | EFI_GUID *SearchGuid;\r |
619 | EFI_GUID *CheckGuid;\r |
620 | EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor;\r |
621 | \r |
622 | PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r |
623 | \r |
624 | //\r |
625 | // Remember that Installs moves up and Notifies moves down.\r |
626 | //\r |
627 | for (Index1 = NotifyStartIndex; Index1 > NotifyStopIndex; Index1--) {\r |
628 | NotifyDescriptor = PrivateData->PpiData.PpiListPtrs[Index1].Notify;\r |
629 | \r |
630 | CheckGuid = NotifyDescriptor->Guid;\r |
631 | \r |
632 | for (Index2 = InstallStartIndex; Index2 < InstallStopIndex; Index2++) {\r |
633 | SearchGuid = PrivateData->PpiData.PpiListPtrs[Index2].Ppi->Guid;\r |
634 | //\r |
635 | // Don't use CompareGuid function here for performance reasons.\r |
636 | // Instead we compare the GUID as INT32 at a time and branch\r |
637 | // on the first failed comparison.\r |
638 | //\r |
639 | if ((((INT32 *)SearchGuid)[0] == ((INT32 *)CheckGuid)[0]) &&\r |
640 | (((INT32 *)SearchGuid)[1] == ((INT32 *)CheckGuid)[1]) &&\r |
641 | (((INT32 *)SearchGuid)[2] == ((INT32 *)CheckGuid)[2]) &&\r |
642 | (((INT32 *)SearchGuid)[3] == ((INT32 *)CheckGuid)[3])) {\r |
643 | DEBUG ((EFI_D_INFO, "Notify: PPI Guid: %g, Peim notify entry point: %x\n", \r |
644 | SearchGuid, \r |
645 | NotifyDescriptor->Notify\r |
646 | ));\r |
647 | NotifyDescriptor->Notify (\r |
648 | PeiServices,\r |
649 | NotifyDescriptor,\r |
650 | (PrivateData->PpiData.PpiListPtrs[Index2].Ppi)->Ppi\r |
651 | );\r |
652 | }\r |
653 | }\r |
654 | }\r |
655 | \r |
656 | return;\r |
657 | }\r |
658 | \r |