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b38907a6 | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2004 - 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 | MemoryStatusCode.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Lib to provide memory journal status code reporting Routines.\r | |
19 | \r | |
20 | --*/\r | |
21 | \r | |
22 | #include "MemoryStatusCode.h"\r | |
23 | #include "PeiLib.h"\r | |
24 | #include "MonoStatusCode.h"\r | |
25 | \r | |
26 | //\r | |
27 | // Global variable. Not accessible while running from flash.\r | |
28 | // After we relocate ourselves into memory, we update this\r | |
29 | // and use it to determine if we are running from flash or memory.\r | |
30 | //\r | |
31 | BOOLEAN mRunningFromMemory = FALSE;\r | |
32 | \r | |
33 | //\r | |
34 | // Global variable used to replace the PPI once we start running from memory.\r | |
35 | //\r | |
36 | PEI_STATUS_CODE_MEMORY_PPI mStatusCodeMemoryPpi = { 0, 0, 0, 0 };\r | |
37 | \r | |
38 | //\r | |
39 | // PPI descriptor for the MonoStatusCode PEIM, see MonoStatusCode.c\r | |
40 | //\r | |
41 | extern EFI_PEI_PPI_DESCRIPTOR mPpiListStatusCode;\r | |
42 | \r | |
43 | VOID\r | |
44 | EFIAPI\r | |
45 | MemoryInitializeStatusCode (\r | |
46 | IN EFI_FFS_FILE_HEADER *FfsHeader,\r | |
47 | IN EFI_PEI_SERVICES **PeiServices\r | |
48 | )\r | |
49 | /*++\r | |
50 | \r | |
51 | Routine Description:\r | |
52 | \r | |
53 | Initialization routine.\r | |
54 | Allocates heap space for storing Status Codes.\r | |
55 | Installs a PPI to point to that heap space.\r | |
56 | Installs a callback to switch to memory.\r | |
57 | Installs a callback to \r | |
58 | \r | |
59 | Arguments: \r | |
60 | \r | |
61 | FfsHeader - FV this PEIM was loaded from.\r | |
62 | PeiServices - General purpose services available to every PEIM.\r | |
63 | \r | |
64 | Returns: \r | |
65 | \r | |
66 | None\r | |
67 | \r | |
68 | --*/\r | |
69 | {\r | |
70 | EFI_STATUS Status;\r | |
71 | MEMORY_STATUS_CODE_INSTANCE *PrivateData;\r | |
72 | PEI_STATUS_CODE_MEMORY_PPI *StatusCodeMemoryPpi;\r | |
73 | PEI_STATUS_CODE_PPI *ReportStatusCodePpi;\r | |
74 | EFI_PHYSICAL_ADDRESS Buffer;\r | |
75 | VOID *StartPointer;\r | |
76 | UINTN Length;\r | |
77 | UINTN LastEntry;\r | |
78 | EFI_PEI_PPI_DESCRIPTOR *ReportStatusCodeDescriptor;\r | |
79 | EFI_PEI_PPI_DESCRIPTOR *StatusCodeMemoryDescriptor;\r | |
80 | \r | |
81 | //\r | |
82 | // Determine if we are being called after relocation into memory.\r | |
83 | //\r | |
84 | if (!mRunningFromMemory) {\r | |
85 | //\r | |
86 | // If we are not running from memory, we need to allocate some heap and\r | |
87 | // install the PPI\r | |
88 | //\r | |
89 | //\r | |
90 | // Allocate heap storage for the journal\r | |
91 | //\r | |
92 | Status = (*PeiServices)->AllocatePool (\r | |
93 | PeiServices,\r | |
94 | PEI_STATUS_CODE_HEAP_LENGTH,\r | |
95 | &StartPointer\r | |
96 | );\r | |
97 | \r | |
98 | //\r | |
99 | // This is not a required feature to boot.\r | |
100 | //\r | |
101 | if (EFI_ERROR (Status)) {\r | |
102 | return ;\r | |
103 | }\r | |
104 | //\r | |
105 | // Allocate heap storage for private data\r | |
106 | // The private data contains the FFS header for this PEIM,\r | |
107 | // a PPI containing information about the status code journal, and\r | |
108 | // a notification for the LoadFile service, to relocate the PEIM into\r | |
109 | // memory.\r | |
110 | //\r | |
111 | Status = (*PeiServices)->AllocatePool (\r | |
112 | PeiServices,\r | |
113 | sizeof (MEMORY_STATUS_CODE_INSTANCE),\r | |
114 | &PrivateData\r | |
115 | );\r | |
116 | \r | |
117 | //\r | |
118 | // This is not a required feature to boot.\r | |
119 | //\r | |
120 | if (EFI_ERROR (Status)) {\r | |
121 | return ;\r | |
122 | }\r | |
123 | //\r | |
124 | // Update the contents of the private data.\r | |
125 | //\r | |
126 | PrivateData->Signature = MEMORY_STATUS_CODE_SIGNATURE;\r | |
127 | PrivateData->This = PrivateData;\r | |
128 | PrivateData->FfsHeader = FfsHeader;\r | |
129 | PrivateData->PpiDescriptor.Flags = (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST);\r | |
130 | PrivateData->PpiDescriptor.Guid = &gPeiStatusCodeMemoryPpiGuid;\r | |
131 | PrivateData->PpiDescriptor.Ppi = &PrivateData->StatusCodeMemoryPpi;\r | |
132 | PrivateData->StatusCodeMemoryPpi.FirstEntry = 0;\r | |
133 | PrivateData->StatusCodeMemoryPpi.LastEntry = 0;\r | |
134 | PrivateData->StatusCodeMemoryPpi.Address = (EFI_PHYSICAL_ADDRESS) (UINTN) StartPointer;\r | |
135 | PrivateData->StatusCodeMemoryPpi.Length = PEI_STATUS_CODE_HEAP_LENGTH;\r | |
136 | #if (PI_SPECIFICATION_VERSION < 0x00010000)\r | |
137 | PrivateData->NotifyDescriptor.Flags =\r | |
138 | (\r | |
139 | EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK |\r | |
140 | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST\r | |
141 | );\r | |
142 | PrivateData->NotifyDescriptor.Guid = &gPeiFvFileLoaderPpiGuid;\r | |
143 | PrivateData->NotifyDescriptor.Notify = LoadImageCallback;\r | |
144 | #endif\r | |
145 | //\r | |
146 | // Publish the PPI\r | |
147 | //\r | |
148 | Status = (*PeiServices)->InstallPpi (PeiServices, &PrivateData->PpiDescriptor);\r | |
149 | if (EFI_ERROR (Status)) {\r | |
150 | return ;\r | |
151 | }\r | |
152 | //\r | |
153 | // Post a callback to relocate to memory\r | |
154 | //\r | |
155 | #if (PI_SPECIFICATION_VERSION < 0x00010000)\r | |
156 | Status = (**PeiServices).NotifyPpi (PeiServices, &PrivateData->NotifyDescriptor);\r | |
157 | if (EFI_ERROR (Status)) {\r | |
158 | return ;\r | |
159 | }\r | |
160 | #endif\r | |
161 | } else {\r | |
162 | //\r | |
163 | // If we are running from memory, we need to copy from the heap to a RT\r | |
164 | // memory buffer.\r | |
165 | //\r | |
166 | //\r | |
167 | // Locate Journal\r | |
168 | //\r | |
169 | Status = (*PeiServices)->LocatePpi (\r | |
170 | PeiServices,\r | |
171 | &gPeiStatusCodeMemoryPpiGuid,\r | |
172 | 0,\r | |
173 | &StatusCodeMemoryDescriptor,\r | |
174 | &StatusCodeMemoryPpi\r | |
175 | );\r | |
176 | if (EFI_ERROR (Status)) {\r | |
177 | return ;\r | |
178 | }\r | |
179 | //\r | |
180 | // Get private data\r | |
181 | //\r | |
182 | PrivateData = MEMORY_STATUS_CODE_FROM_DESCRIPTOR_THIS (StatusCodeMemoryDescriptor);\r | |
183 | \r | |
184 | //\r | |
185 | // At this point, we need to fix up any addresses that we have as the heap\r | |
186 | // has moved.\r | |
187 | //\r | |
188 | PrivateData->PpiDescriptor.Ppi = &PrivateData->StatusCodeMemoryPpi;\r | |
189 | PrivateData->PpiDescriptor.Guid = &gPeiStatusCodeMemoryPpiGuid;\r | |
190 | PrivateData->StatusCodeMemoryPpi.Address = PrivateData->StatusCodeMemoryPpi.Address +\r | |
191 | (UINTN) PrivateData - (UINTN) PrivateData->This;\r | |
192 | PrivateData->This = PrivateData;\r | |
193 | #if (PI_SPECIFICATION_VERSION < 0x00010000)\r | |
194 | PrivateData->NotifyDescriptor.Guid = &gPeiFvFileLoaderPpiGuid;\r | |
195 | PrivateData->NotifyDescriptor.Notify = LoadImageCallback;\r | |
196 | #endif\r | |
197 | \r | |
198 | //\r | |
199 | // Allocate RT memory.\r | |
200 | //\r | |
201 | Status = (*PeiServices)->AllocatePages (\r | |
202 | PeiServices,\r | |
203 | EfiRuntimeServicesData,\r | |
204 | PEI_STATUS_CODE_RT_PAGES,\r | |
205 | &Buffer\r | |
206 | );\r | |
207 | if (EFI_ERROR (Status)) {\r | |
208 | return ;\r | |
209 | }\r | |
210 | \r | |
211 | DEBUG_CODE (\r | |
212 | EfiCommonLibZeroMem ((VOID *) (UINTN) Buffer, PEI_STATUS_CODE_RT_LENGTH);\r | |
213 | )\r | |
214 | //\r | |
215 | // Copy the heap to the allocated memory.\r | |
216 | // Unwind the rolling queue to start at 0 in the new space. We need to do\r | |
217 | // this because the new queue is much bigger than the heap allocation.\r | |
218 | //\r | |
219 | if (PEI_STATUS_CODE_RT_LENGTH <= PEI_STATUS_CODE_HEAP_LENGTH) {\r | |
220 | return ;\r | |
221 | }\r | |
222 | \r | |
223 | if (StatusCodeMemoryPpi->LastEntry >= StatusCodeMemoryPpi->FirstEntry) {\r | |
224 | LastEntry = StatusCodeMemoryPpi->LastEntry - StatusCodeMemoryPpi->FirstEntry;\r | |
225 | StartPointer = (VOID *) ((UINTN) StatusCodeMemoryPpi->Address + (StatusCodeMemoryPpi->FirstEntry * sizeof (EFI_STATUS_CODE_ENTRY)));\r | |
226 | Length = (StatusCodeMemoryPpi->LastEntry - StatusCodeMemoryPpi->FirstEntry) * sizeof (EFI_STATUS_CODE_ENTRY);\r | |
227 | (*PeiServices)->CopyMem ((VOID *) (UINTN) Buffer, StartPointer, Length);\r | |
228 | } else {\r | |
229 | //\r | |
230 | // The last entry will be the new last entry after moving heap to buffer\r | |
231 | //\r | |
232 | LastEntry = (PEI_STATUS_CODE_MAX_HEAP_ENTRY - StatusCodeMemoryPpi->FirstEntry) + StatusCodeMemoryPpi->LastEntry;\r | |
233 | //\r | |
234 | // Copy from the first entry to the end of the heap\r | |
235 | //\r | |
236 | StartPointer = (VOID *) ((UINTN) StatusCodeMemoryPpi->Address + (StatusCodeMemoryPpi->FirstEntry * sizeof (EFI_STATUS_CODE_ENTRY)));\r | |
237 | Length = PEI_STATUS_CODE_HEAP_LENGTH - (StatusCodeMemoryPpi->FirstEntry * sizeof (EFI_STATUS_CODE_ENTRY));\r | |
238 | (*PeiServices)->CopyMem ((VOID *) (UINTN) Buffer, StartPointer, Length);\r | |
239 | //\r | |
240 | // Copy from the start to the heap to the last entry\r | |
241 | //\r | |
242 | StartPointer = (VOID *) (UINTN) StatusCodeMemoryPpi->Address;\r | |
243 | (*PeiServices)->CopyMem (\r | |
244 | (VOID *) (UINTN) (Buffer + Length),\r | |
245 | StartPointer,\r | |
246 | (StatusCodeMemoryPpi->LastEntry * sizeof (EFI_STATUS_CODE_ENTRY))\r | |
247 | );\r | |
248 | };\r | |
249 | \r | |
250 | //\r | |
251 | // Update the PPI to NULL, so it will not be used.\r | |
252 | //\r | |
253 | StatusCodeMemoryPpi->FirstEntry = 0;\r | |
254 | StatusCodeMemoryPpi->LastEntry = 0;\r | |
255 | StatusCodeMemoryPpi->Address = 0;\r | |
256 | StatusCodeMemoryPpi->Length = 0;\r | |
257 | \r | |
258 | //\r | |
259 | // Update in memory version of PPI that will be used.\r | |
260 | //\r | |
261 | mStatusCodeMemoryPpi.FirstEntry = 0;\r | |
262 | mStatusCodeMemoryPpi.LastEntry = LastEntry;\r | |
263 | mStatusCodeMemoryPpi.Address = (EFI_PHYSICAL_ADDRESS) (UINTN) Buffer;\r | |
264 | mStatusCodeMemoryPpi.Length = PEI_STATUS_CODE_RT_LENGTH;\r | |
265 | \r | |
266 | //\r | |
267 | // Reinstall the report status code function\r | |
268 | //\r | |
269 | //\r | |
270 | // Locate status code PPI\r | |
271 | //\r | |
272 | Status = (*PeiServices)->LocatePpi (\r | |
273 | PeiServices,\r | |
274 | &gPeiStatusCodePpiGuid,\r | |
275 | 0,\r | |
276 | &ReportStatusCodeDescriptor,\r | |
277 | &ReportStatusCodePpi\r | |
278 | );\r | |
279 | if (EFI_ERROR (Status)) {\r | |
280 | return ;\r | |
281 | }\r | |
282 | //\r | |
283 | // Reinstall the ReportStatusCode interface using the memory-based\r | |
284 | // descriptor\r | |
285 | //\r | |
286 | Status = (*PeiServices)->ReInstallPpi (\r | |
287 | PeiServices,\r | |
288 | ReportStatusCodeDescriptor,\r | |
289 | &mPpiListStatusCode\r | |
290 | );\r | |
291 | if (EFI_ERROR (Status)) {\r | |
292 | EFI_BREAKPOINT ();\r | |
293 | return ;\r | |
294 | }\r | |
295 | //\r | |
296 | // Publish a GUIDed HOB that contains a pointer to the status code PPI\r | |
297 | // structure. This is a bit of a short cut as I just used the PPI GUID to\r | |
298 | // identify the HOB. This HOB is caught by the DXE status code memory\r | |
299 | // listener and used to find the journal.\r | |
300 | //\r | |
301 | StatusCodeMemoryPpi = &mStatusCodeMemoryPpi;\r | |
302 | Status = PeiBuildHobGuidData (\r | |
303 | PeiServices,\r | |
304 | &gPeiStatusCodeMemoryPpiGuid,\r | |
305 | &StatusCodeMemoryPpi,\r | |
306 | sizeof (VOID *)\r | |
307 | );\r | |
308 | if (EFI_ERROR (Status)) {\r | |
309 | EFI_BREAKPOINT ();\r | |
310 | return ;\r | |
311 | }\r | |
312 | }\r | |
313 | }\r | |
314 | \r | |
315 | EFI_STATUS\r | |
316 | EFIAPI\r | |
317 | MemoryReportStatusCode (\r | |
318 | IN EFI_PEI_SERVICES **PeiServices,\r | |
319 | IN EFI_STATUS_CODE_TYPE CodeType,\r | |
320 | IN EFI_STATUS_CODE_VALUE Value,\r | |
321 | IN UINT32 Instance,\r | |
322 | IN EFI_GUID * CallerId ,\r | |
323 | IN EFI_STATUS_CODE_DATA * Data OPTIONAL\r | |
324 | )\r | |
325 | /*++\r | |
326 | \r | |
327 | Routine Description:\r | |
328 | \r | |
329 | Provide a memory status code\r | |
330 | \r | |
331 | Arguments:\r | |
332 | \r | |
333 | Same as ReportStatusCode PPI\r | |
334 | \r | |
335 | Returns:\r | |
336 | \r | |
337 | EFI_SUCCESS This function always returns success\r | |
338 | \r | |
339 | --*/\r | |
340 | {\r | |
341 | EFI_STATUS Status;\r | |
342 | PEI_STATUS_CODE_MEMORY_PPI *StatusCodeMemoryPpi;\r | |
343 | EFI_STATUS_CODE_ENTRY *CurrentEntry;\r | |
344 | UINTN LastEntry;\r | |
345 | MEMORY_STATUS_CODE_INSTANCE *PrivateData;\r | |
346 | EFI_PEI_PPI_DESCRIPTOR *StatusCodeMemoryDescriptor;\r | |
347 | \r | |
348 | //\r | |
349 | // We don't care to log debug codes.\r | |
350 | //\r | |
351 | if ((CodeType & EFI_STATUS_CODE_TYPE_MASK) == EFI_DEBUG_CODE) {\r | |
352 | return EFI_SUCCESS;\r | |
353 | }\r | |
354 | \r | |
355 | if (!mRunningFromMemory) {\r | |
356 | //\r | |
357 | // If we are called from DXE and have not been reinstalled into memory, we\r | |
358 | // can no longer locate the journal, so we can no longer log status codes.\r | |
359 | //\r | |
360 | if (!PeiServices) {\r | |
361 | return EFI_SUCCESS;\r | |
362 | }\r | |
363 | //\r | |
364 | // Locate Journal\r | |
365 | //\r | |
366 | Status = (*PeiServices)->LocatePpi (\r | |
367 | PeiServices,\r | |
368 | &gPeiStatusCodeMemoryPpiGuid,\r | |
369 | 0,\r | |
370 | &StatusCodeMemoryDescriptor,\r | |
371 | &StatusCodeMemoryPpi\r | |
372 | );\r | |
373 | if (EFI_ERROR (Status)) {\r | |
374 | return EFI_SUCCESS;\r | |
375 | }\r | |
376 | //\r | |
377 | // Determine the last entry in the journal.\r | |
378 | // This is needed to properly implement the rolling queue.\r | |
379 | //\r | |
380 | LastEntry = PEI_STATUS_CODE_MAX_HEAP_ENTRY;\r | |
381 | \r | |
382 | //\r | |
383 | // Get private data\r | |
384 | //\r | |
385 | PrivateData = MEMORY_STATUS_CODE_FROM_DESCRIPTOR_THIS (StatusCodeMemoryDescriptor);\r | |
386 | \r | |
387 | //\r | |
388 | // Once memory gets installed, heap gets moved to real memory.\r | |
389 | // We need to fix up the pointers to match the move.\r | |
390 | //\r | |
391 | PrivateData->PpiDescriptor.Ppi = &PrivateData->StatusCodeMemoryPpi;\r | |
392 | PrivateData->PpiDescriptor.Guid = &gPeiStatusCodeMemoryPpiGuid;\r | |
393 | PrivateData->StatusCodeMemoryPpi.Address = PrivateData->StatusCodeMemoryPpi.Address +\r | |
394 | (UINTN) PrivateData - (UINTN) PrivateData->This;\r | |
395 | PrivateData->This = PrivateData;\r | |
396 | #if (PI_SPECIFICATION_VERSION < 0x00010000)\r | |
397 | PrivateData->NotifyDescriptor.Guid = &gPeiFvFileLoaderPpiGuid;\r | |
398 | PrivateData->NotifyDescriptor.Notify = LoadImageCallback;\r | |
399 | #endif\r | |
400 | StatusCodeMemoryPpi = PrivateData->PpiDescriptor.Ppi;\r | |
401 | } else {\r | |
402 | //\r | |
403 | // Use global/memory copy of the PPI\r | |
404 | //\r | |
405 | StatusCodeMemoryPpi = &mStatusCodeMemoryPpi;\r | |
406 | \r | |
407 | //\r | |
408 | // Determine the last entry in the journal.\r | |
409 | // This is needed to properly implement the rolling queue.\r | |
410 | //\r | |
411 | LastEntry = PEI_STATUS_CODE_MAX_RT_ENTRY;\r | |
412 | }\r | |
413 | //\r | |
414 | // Return if we are using a cleared PPI somehow\r | |
415 | //\r | |
416 | if (!StatusCodeMemoryPpi->Address || !StatusCodeMemoryPpi->Length) {\r | |
417 | return EFI_SUCCESS;\r | |
418 | }\r | |
419 | //\r | |
420 | // Update the latest entry in the journal (may actually be first due to rolling\r | |
421 | // queue).\r | |
422 | //\r | |
423 | CurrentEntry = (EFI_STATUS_CODE_ENTRY *) (UINTN) (StatusCodeMemoryPpi->Address + (StatusCodeMemoryPpi->LastEntry * sizeof (EFI_STATUS_CODE_ENTRY)));\r | |
424 | \r | |
425 | StatusCodeMemoryPpi->LastEntry = (StatusCodeMemoryPpi->LastEntry + 1) % LastEntry;\r | |
426 | if (StatusCodeMemoryPpi->LastEntry == StatusCodeMemoryPpi->FirstEntry) {\r | |
427 | StatusCodeMemoryPpi->FirstEntry = (StatusCodeMemoryPpi->FirstEntry + 1) % LastEntry;\r | |
428 | }\r | |
429 | \r | |
430 | CurrentEntry->Type = CodeType;\r | |
431 | CurrentEntry->Value = Value;\r | |
432 | CurrentEntry->Instance = Instance;\r | |
433 | \r | |
434 | return EFI_SUCCESS;\r | |
435 | }\r | |
436 | \r | |
437 | \r | |
438 | #if (PI_SPECIFICATION_VERSION < 0x00010000)\r | |
439 | \r | |
440 | EFI_STATUS\r | |
441 | EFIAPI\r | |
442 | LoadImageCallback (\r | |
443 | IN EFI_PEI_SERVICES **PeiServices,\r | |
444 | IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,\r | |
445 | IN VOID *Ppi\r | |
446 | )\r | |
447 | /*++\r | |
448 | \r | |
449 | Routine Description:\r | |
450 | \r | |
451 | Relocate the PEIM into memory.\r | |
452 | \r | |
453 | Once load protocol becomes available, relocate our PEIM into memory.\r | |
454 | The primary benefit is to eliminate the blackout window that we would have in\r | |
455 | the memory log between the end of PEI and the status code DXE driver taking\r | |
456 | control. If we don't do this, we cannot determine where our memory journal\r | |
457 | is located and cannot function.\r | |
458 | \r | |
459 | A second benefit is speed optimization throughout DXE.\r | |
460 | \r | |
461 | Arguments:\r | |
462 | \r | |
463 | PeiServices - General purpose services available to every PEIM.\r | |
464 | NotifyDescriptor - Information about the notify event.\r | |
465 | Ppi - Context\r | |
466 | \r | |
467 | Returns:\r | |
468 | \r | |
469 | EFI_SUCCESS This function always returns success.\r | |
470 | \r | |
471 | --*/\r | |
472 | {\r | |
473 | EFI_STATUS Status;\r | |
474 | EFI_PHYSICAL_ADDRESS ImageAddress;\r | |
475 | EFI_PHYSICAL_ADDRESS EntryPoint;\r | |
476 | UINT64 ImageSize;\r | |
477 | MEMORY_STATUS_CODE_INSTANCE *PrivateData;\r | |
478 | \r | |
479 | //\r | |
480 | // Relocate to memory\r | |
481 | //\r | |
482 | if (!mRunningFromMemory) {\r | |
483 | //\r | |
484 | // Use the callback descriptor to get the FfsHeader\r | |
485 | //\r | |
486 | PrivateData = MEMORY_STATUS_CODE_FROM_NOTIFY_THIS (NotifyDescriptor);\r | |
487 | \r | |
488 | Status = ((EFI_PEI_FV_FILE_LOADER_PPI *) Ppi)->FvLoadFile (\r | |
489 | Ppi,\r | |
490 | PrivateData->FfsHeader,\r | |
491 | &ImageAddress,\r | |
492 | &ImageSize,\r | |
493 | &EntryPoint\r | |
494 | );\r | |
495 | if (EFI_ERROR (Status)) {\r | |
496 | return EFI_SUCCESS;\r | |
497 | }\r | |
498 | //\r | |
499 | // Set the flag in the loaded image that indicates the PEIM is executing\r | |
500 | // from memory.\r | |
501 | //\r | |
502 | #ifdef EFI_NT_EMULATOR\r | |
503 | //\r | |
504 | // For NT32, we should also relocate image here, because if the DLL\r | |
505 | // is already load, we will NOT load it twice. This feature is added to\r | |
506 | // prevent loading driver twice in DXE phase cause system crash.\r | |
507 | //\r | |
508 | * (BOOLEAN *) ((UINTN) &mRunningFromMemory + (UINTN) EntryPoint - (UINTN) InstallMonoStatusCode) = TRUE;\r | |
509 | #else\r | |
510 | * (BOOLEAN *) ((UINTN) &mRunningFromMemory + (UINTN) EntryPoint - (UINTN) InstallMonoStatusCode) = TRUE;\r | |
511 | #endif\r | |
512 | Status = ((EFI_PEIM_ENTRY_POINT )(UINTN) EntryPoint) (PrivateData->FfsHeader, PeiServices);\r | |
513 | if (EFI_ERROR (Status)) {\r | |
514 | return EFI_SUCCESS;\r | |
515 | }\r | |
516 | }\r | |
517 | \r | |
518 | return EFI_SUCCESS;\r | |
519 | }\r | |
520 | #endif\r | |
521 | \r |