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1/*++\r
2\r
3Copyright (c) 2006, Intel Corporation\r
4All rights reserved. This program and the accompanying materials\r
5are licensed and made available under the terms and conditions of the BSD License\r
6which accompanies this distribution. The full text of the license may be found at\r
7http://opensource.org/licenses/bsd-license.php\r
8\r
9THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
10WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
11\r
12Module Name:\r
13\r
14 DxeLoad.c\r
15\r
16Abstract:\r
17\r
18 Last PEIM.\r
19 Responsibility of this module is to load the DXE Core from a Firmware Volume.\r
20\r
21--*/\r
22\r
23#include "DxeIpl.h"\r
24\r
25BOOLEAN gInMemory = FALSE;\r
26\r
27//\r
28// Module Globals used in the DXE to PEI handoff\r
29// These must be module globals, so the stack can be switched\r
30//\r
31static EFI_DXE_IPL_PPI mDxeIplPpi = {\r
32 DxeLoadCore\r
33};\r
34\r
35static EFI_PEI_FV_FILE_LOADER_PPI mLoadFilePpi = {\r
36 DxeIplLoadFile\r
37};\r
38\r
39static EFI_PEI_PPI_DESCRIPTOR mPpiList[] = {\r
40 {\r
41 EFI_PEI_PPI_DESCRIPTOR_PPI,\r
42 &gEfiPeiFvFileLoaderPpiGuid,\r
43 &mLoadFilePpi\r
44 },\r
45 {\r
46 (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
47 &gEfiDxeIplPpiGuid,\r
48 &mDxeIplPpi\r
49 }\r
50};\r
51\r
52static EFI_PEI_PPI_DESCRIPTOR mPpiSignal = {\r
53 (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
54 &gEfiEndOfPeiSignalPpiGuid,\r
55 NULL\r
56};\r
57\r
58GLOBAL_REMOVE_IF_UNREFERENCED DECOMPRESS_LIBRARY gEfiDecompress = {\r
59 UefiDecompressGetInfo,\r
60 UefiDecompress\r
61};\r
62\r
63GLOBAL_REMOVE_IF_UNREFERENCED DECOMPRESS_LIBRARY gTianoDecompress = {\r
64 TianoDecompressGetInfo,\r
65 TianoDecompress\r
66};\r
67\r
68GLOBAL_REMOVE_IF_UNREFERENCED DECOMPRESS_LIBRARY gCustomDecompress = {\r
69 CustomDecompressGetInfo,\r
70 CustomDecompress\r
71};\r
72\r
73EFI_STATUS\r
74EFIAPI\r
75PeimInitializeDxeIpl (\r
76 IN EFI_FFS_FILE_HEADER *FfsHeader,\r
77 IN EFI_PEI_SERVICES **PeiServices\r
78 )\r
79/*++\r
80\r
81Routine Description:\r
82\r
83 Initializes the Dxe Ipl PPI\r
84\r
85Arguments:\r
86\r
87 FfsHeader - Pointer to FFS file header\r
88 PeiServices - General purpose services available to every PEIM.\r
89\r
90Returns:\r
91\r
92 EFI_SUCCESS\r
93\r
94--*/\r
95{\r
96 EFI_STATUS Status;\r
97 EFI_PEI_PE_COFF_LOADER_PROTOCOL *PeiEfiPeiPeCoffLoader;\r
98 EFI_BOOT_MODE BootMode;\r
99\r
100 Status = PeiServicesGetBootMode (&BootMode);\r
101 ASSERT_EFI_ERROR (Status);\r
102\r
103 if (!gInMemory && (BootMode != BOOT_ON_S3_RESUME)) { \r
104 //\r
105 // The DxeIpl has not yet been shadowed\r
106 //\r
107 PeiEfiPeiPeCoffLoader = (EFI_PEI_PE_COFF_LOADER_PROTOCOL *)GetPeCoffLoaderProtocol ();\r
108\r
109 //\r
110 // Shadow DxeIpl and then re-run its entry point\r
111 //\r
112 Status = ShadowDxeIpl (FfsHeader, PeiEfiPeiPeCoffLoader);\r
113 } else {\r
114 //\r
115 // Install FvFileLoader and DxeIpl PPIs.\r
116 //\r
117 Status = PeiServicesInstallPpi (mPpiList);\r
118 ASSERT_EFI_ERROR(Status);\r
119 }\r
120 \r
121 return Status;\r
122}\r
123\r
124EFI_STATUS\r
125EFIAPI\r
126DxeLoadCore (\r
127 IN EFI_DXE_IPL_PPI *This,\r
128 IN EFI_PEI_SERVICES **PeiServices,\r
129 IN EFI_PEI_HOB_POINTERS HobList\r
130 )\r
131/*++\r
132\r
133Routine Description:\r
134\r
135 Main entry point to last PEIM\r
136\r
137Arguments:\r
138 This - Entry point for DXE IPL PPI\r
139 PeiServices - General purpose services available to every PEIM.\r
140 HobList - Address to the Pei HOB list\r
141\r
142Returns:\r
143\r
144 EFI_SUCCESS - DEX core was successfully loaded.\r
145 EFI_OUT_OF_RESOURCES - There are not enough resources to load DXE core.\r
146\r
147--*/\r
148{\r
149 EFI_STATUS Status;\r
150 EFI_GUID DxeCoreFileName;\r
151 EFI_GUID FirmwareFileName;\r
152 VOID *Pe32Data;\r
153 VOID *FvImageData; \r
154 EFI_PHYSICAL_ADDRESS DxeCoreAddress;\r
155 UINT64 DxeCoreSize;\r
156 EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint;\r
157 EFI_PEI_PE_COFF_LOADER_PROTOCOL *PeiEfiPeiPeCoffLoader;\r
158 EFI_BOOT_MODE BootMode;\r
159 EFI_PEI_RECOVERY_MODULE_PPI *PeiRecovery;\r
160 EFI_PEI_S3_RESUME_PPI *S3Resume;\r
161\r
162// PERF_START (PeiServices, L"DxeIpl", NULL, 0);\r
163\r
164 //\r
165 // if in S3 Resume, restore configure\r
166 //\r
167 Status = PeiServicesGetBootMode (&BootMode);\r
168 ASSERT_EFI_ERROR(Status);\r
169\r
170 if (BootMode == BOOT_ON_S3_RESUME) {\r
171 Status = PeiServicesLocatePpi (\r
172 &gEfiPeiS3ResumePpiGuid,\r
173 0,\r
174 NULL,\r
175 (VOID **)&S3Resume\r
176 );\r
177 ASSERT_EFI_ERROR (Status);\r
178\r
179 Status = S3Resume->S3RestoreConfig (PeiServices);\r
180 ASSERT_EFI_ERROR (Status);\r
181 } else if (BootMode == BOOT_IN_RECOVERY_MODE) {\r
182\r
183 Status = PeiServicesLocatePpi (\r
184 &gEfiPeiRecoveryModulePpiGuid,\r
185 0,\r
186 NULL,\r
187 (VOID **)&PeiRecovery\r
188 );\r
189 ASSERT_EFI_ERROR (Status);\r
190\r
191 Status = PeiRecovery->LoadRecoveryCapsule (PeiServices, PeiRecovery);\r
192 if (EFI_ERROR (Status)) {\r
193 DEBUG ((EFI_D_ERROR, "Load Recovery Capsule Failed.(Status = %r)\n", Status));\r
194 CpuDeadLoop ();\r
195 }\r
196\r
197 //\r
198 // Now should have a HOB with the DXE core w/ the old HOB destroyed\r
199 //\r
200 }\r
201\r
202 //\r
203 // Install the PEI Protocols that are shared between PEI and DXE\r
204 //\r
205 PeiEfiPeiPeCoffLoader = (EFI_PEI_PE_COFF_LOADER_PROTOCOL *)GetPeCoffLoaderProtocol ();\r
206 ASSERT (PeiEfiPeiPeCoffLoader != NULL);\r
207\r
208\r
209 //\r
210 // Find the EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE type compressed Firmware Volume file\r
211 // The file found will be processed by PeiProcessFile: It will first be decompressed to\r
212 // a normal FV, then a corresponding FV type hob will be built. \r
213 //\r
214 Status = PeiFindFile (\r
215 EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE,\r
216 EFI_SECTION_FIRMWARE_VOLUME_IMAGE,\r
217 &FirmwareFileName,\r
218 &FvImageData\r
219 );\r
220\r
221 //\r
222 // Find the DXE Core in a Firmware Volume\r
223 //\r
224 Status = PeiFindFile (\r
225 EFI_FV_FILETYPE_DXE_CORE,\r
226 EFI_SECTION_PE32,\r
227 &DxeCoreFileName,\r
228 &Pe32Data\r
229 );\r
230 ASSERT_EFI_ERROR (Status);\r
231\r
232 //\r
233 // Load the DXE Core from a Firmware Volume\r
234 //\r
235 Status = PeiLoadFile (\r
236 PeiEfiPeiPeCoffLoader,\r
237 Pe32Data,\r
238 &DxeCoreAddress,\r
239 &DxeCoreSize,\r
240 &DxeCoreEntryPoint\r
241 );\r
242 ASSERT_EFI_ERROR (Status);\r
243\r
244 //\r
245 // Add HOB for the DXE Core\r
246 //\r
247 BuildModuleHob (\r
248 &DxeCoreFileName,\r
249 DxeCoreAddress,\r
250 DxeCoreSize,\r
251 DxeCoreEntryPoint\r
252 );\r
253\r
254 //\r
255 // Report Status Code EFI_SW_PEI_PC_HANDOFF_TO_NEXT\r
256 //\r
257 REPORT_STATUS_CODE (\r
258 EFI_PROGRESS_CODE,\r
259 EFI_SOFTWARE_PEI_MODULE | EFI_SW_PEI_CORE_PC_HANDOFF_TO_NEXT\r
260 );\r
261\r
262 if (FeaturePcdGet (PcdDxeIplBuildShareCodeHobs)) {\r
263 if (FeaturePcdGet (PcdDxeIplSupportEfiDecompress)) {\r
264 //\r
265 // Add HOB for the EFI Decompress Protocol\r
266 //\r
267 BuildGuidDataHob (\r
268 &gEfiDecompressProtocolGuid,\r
269 (VOID *)&gEfiDecompress,\r
270 sizeof (gEfiDecompress)\r
271 );\r
272 }\r
273 if (FeaturePcdGet (PcdDxeIplSupportTianoDecompress)) {\r
274 //\r
275 // Add HOB for the Tiano Decompress Protocol\r
276 //\r
277 BuildGuidDataHob (\r
278 &gEfiTianoDecompressProtocolGuid,\r
279 (VOID *)&gTianoDecompress,\r
280 sizeof (gTianoDecompress)\r
281 );\r
282 }\r
283 if (FeaturePcdGet (PcdDxeIplSupportCustomDecompress)) {\r
284 //\r
285 // Add HOB for the user customized Decompress Protocol\r
286 //\r
287 BuildGuidDataHob (\r
288 &gEfiCustomizedDecompressProtocolGuid,\r
289 (VOID *)&gCustomDecompress,\r
290 sizeof (gCustomDecompress)\r
291 );\r
292 }\r
293\r
294 //\r
295 // Add HOB for the PE/COFF Loader Protocol\r
296 //\r
297 BuildGuidDataHob (\r
298 &gEfiPeiPeCoffLoaderGuid,\r
299 (VOID *)&PeiEfiPeiPeCoffLoader,\r
300 sizeof (VOID *)\r
301 );\r
302 }\r
303\r
304 //\r
305 // Transfer control to the DXE Core\r
306 // The handoff state is simply a pointer to the HOB list\r
307 //\r
308\r
309 DEBUG ((EFI_D_INFO, "DXE Core Entry Point 0x%08x\n", (UINTN) DxeCoreEntryPoint));\r
310 HandOffToDxeCore (DxeCoreEntryPoint, HobList, &mPpiSignal);\r
311 //\r
312 // If we get here, then the DXE Core returned. This is an error\r
313 // Dxe Core should not return.\r
314 //\r
315 ASSERT (FALSE);\r
316 CpuDeadLoop ();\r
317\r
318 return EFI_OUT_OF_RESOURCES;\r
319}\r
320\r
321EFI_STATUS\r
322PeiFindFile (\r
323 IN UINT8 Type,\r
324 IN UINT16 SectionType,\r
325 OUT EFI_GUID *FileName,\r
326 OUT VOID **Pe32Data\r
327 )\r
328/*++\r
329\r
330Routine Description:\r
331\r
332 Finds a PE/COFF of a specific Type and SectionType in the Firmware Volumes\r
333 described in the HOB list. Able to search in a compression set in a FFS file.\r
334 But only one level of compression is supported, that is, not able to search\r
335 in a compression set that is within another compression set.\r
336\r
337Arguments:\r
338\r
339 Type - The Type of file to retrieve\r
340\r
341 SectionType - The type of section to retrieve from a file\r
342\r
343 FileName - The name of the file found in the Firmware Volume\r
344\r
345 Pe32Data - Pointer to the beginning of the PE/COFF file found in the Firmware Volume\r
346\r
347Returns:\r
348\r
349 EFI_SUCCESS - The file was found, and the name is returned in FileName, and a pointer to\r
350 the PE/COFF image is returned in Pe32Data\r
351\r
352 EFI_NOT_FOUND - The file was not found in the Firmware Volumes present in the HOB List\r
353\r
354--*/\r
355{\r
356 EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r
357 EFI_FFS_FILE_HEADER *FfsFileHeader;\r
358 EFI_STATUS Status;\r
359 EFI_PEI_HOB_POINTERS Hob;\r
360\r
361\r
362 FwVolHeader = NULL;\r
363 FfsFileHeader = NULL;\r
364 Status = EFI_SUCCESS;\r
365\r
366 //\r
367 // For each Firmware Volume, look for a specified type\r
368 // of file and break out until no one is found \r
369 //\r
370 Hob.Raw = GetHobList ();\r
371 while ((Hob.Raw = GetNextHob (EFI_HOB_TYPE_FV, Hob.Raw)) != NULL) {\r
372 FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) (Hob.FirmwareVolume->BaseAddress);\r
373 Status = PeiServicesFfsFindNextFile (\r
374 Type,\r
375 FwVolHeader,\r
376 &FfsFileHeader\r
377 );\r
378 if (!EFI_ERROR (Status)) {\r
379 Status = PeiProcessFile (\r
380 SectionType,\r
381 FfsFileHeader,\r
382 Pe32Data,\r
383 &Hob\r
384 );\r
385 CopyMem (FileName, &FfsFileHeader->Name, sizeof (EFI_GUID));\r
386 //\r
387 // Find all Fv type ffs to get all FvImage and add them into FvHob\r
388 //\r
389 if (!EFI_ERROR (Status) && (Type != EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE)) {\r
390 return EFI_SUCCESS;\r
391 }\r
392 }\r
393 Hob.Raw = GET_NEXT_HOB (Hob);\r
394 }\r
395 return EFI_NOT_FOUND;\r
396}\r
397\r
398EFI_STATUS\r
399PeiLoadFile (\r
400 IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *PeiEfiPeiPeCoffLoader,\r
401 IN VOID *Pe32Data,\r
402 OUT EFI_PHYSICAL_ADDRESS *ImageAddress,\r
403 OUT UINT64 *ImageSize,\r
404 OUT EFI_PHYSICAL_ADDRESS *EntryPoint\r
405 )\r
406/*++\r
407\r
408Routine Description:\r
409\r
410 Loads and relocates a PE/COFF image into memory.\r
411\r
412Arguments:\r
413\r
414 PeiEfiPeiPeCoffLoader - Pointer to a PE COFF loader protocol\r
415\r
416 Pe32Data - The base address of the PE/COFF file that is to be loaded and relocated\r
417\r
418 ImageAddress - The base address of the relocated PE/COFF image\r
419\r
420 ImageSize - The size of the relocated PE/COFF image\r
421\r
422 EntryPoint - The entry point of the relocated PE/COFF image\r
423\r
424Returns:\r
425\r
426 EFI_SUCCESS - The file was loaded and relocated\r
427\r
428 EFI_OUT_OF_RESOURCES - There was not enough memory to load and relocate the PE/COFF file\r
429\r
430--*/\r
431{\r
432 EFI_STATUS Status;\r
433 PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;\r
434\r
435 ZeroMem (&ImageContext, sizeof (ImageContext));\r
436 ImageContext.Handle = Pe32Data;\r
437 Status = GetImageReadFunction (&ImageContext);\r
438\r
439 ASSERT_EFI_ERROR (Status);\r
440\r
441 Status = PeiEfiPeiPeCoffLoader->GetImageInfo (PeiEfiPeiPeCoffLoader, &ImageContext);\r
442 if (EFI_ERROR (Status)) {\r
443 return Status;\r
444 }\r
445 //\r
446 // Allocate Memory for the image\r
447 //\r
448 ImageContext.ImageAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) AllocatePages (EFI_SIZE_TO_PAGES ((UINT32) ImageContext.ImageSize));\r
449 ASSERT (ImageContext.ImageAddress != 0);\r
450\r
451 //\r
452 // Load the image to our new buffer\r
453 //\r
454 Status = PeiEfiPeiPeCoffLoader->LoadImage (PeiEfiPeiPeCoffLoader, &ImageContext);\r
455 if (EFI_ERROR (Status)) {\r
456 return Status;\r
457 }\r
458 //\r
459 // Relocate the image in our new buffer\r
460 //\r
461 Status = PeiEfiPeiPeCoffLoader->RelocateImage (PeiEfiPeiPeCoffLoader, &ImageContext);\r
462 if (EFI_ERROR (Status)) {\r
463 return Status;\r
464 }\r
465\r
466 //\r
467 // Flush the instruction cache so the image data is written before we execute it\r
468 //\r
469 InvalidateInstructionCacheRange ((VOID *)(UINTN)ImageContext.ImageAddress, (UINTN)ImageContext.ImageSize);\r
470\r
471 *ImageAddress = ImageContext.ImageAddress;\r
472 *ImageSize = ImageContext.ImageSize;\r
473 *EntryPoint = ImageContext.EntryPoint;\r
474\r
475 return EFI_SUCCESS;\r
476}\r
477\r
478EFI_STATUS\r
479ShadowDxeIpl (\r
480 IN EFI_FFS_FILE_HEADER *DxeIplFileHeader,\r
481 IN EFI_PEI_PE_COFF_LOADER_PROTOCOL *PeiEfiPeiPeCoffLoader\r
482 )\r
483/*++\r
484\r
485Routine Description:\r
486\r
487 Shadow the DXE IPL to a different memory location. This occurs after permanent\r
488 memory has been discovered.\r
489\r
490Arguments:\r
491\r
492 DxeIplFileHeader - Pointer to the FFS file header of the DXE IPL driver\r
493\r
494 PeiEfiPeiPeCoffLoader - Pointer to a PE COFF loader protocol\r
495\r
496Returns:\r
497\r
498 EFI_SUCCESS - DXE IPL was successfully shadowed to a different memory location.\r
499\r
500 EFI_ ERROR - The shadow was unsuccessful.\r
501\r
502\r
503--*/\r
504{\r
505 UINTN SectionLength;\r
506 UINTN OccupiedSectionLength;\r
507 EFI_PHYSICAL_ADDRESS DxeIplAddress;\r
508 UINT64 DxeIplSize;\r
509 EFI_PHYSICAL_ADDRESS DxeIplEntryPoint;\r
510 EFI_STATUS Status;\r
511 EFI_COMMON_SECTION_HEADER *Section;\r
512\r
513 Section = (EFI_COMMON_SECTION_HEADER *) (DxeIplFileHeader + 1);\r
514\r
515 while ((Section->Type != EFI_SECTION_PE32) && (Section->Type != EFI_SECTION_TE)) {\r
516 SectionLength = *(UINT32 *) (Section->Size) & 0x00ffffff;\r
517 OccupiedSectionLength = GET_OCCUPIED_SIZE (SectionLength, 4);\r
518 Section = (EFI_COMMON_SECTION_HEADER *) ((UINT8 *) Section + OccupiedSectionLength);\r
519 }\r
520 //\r
521 // Relocate DxeIpl into memory by using loadfile service\r
522 //\r
523 Status = PeiLoadFile (\r
524 PeiEfiPeiPeCoffLoader,\r
525 (VOID *) (Section + 1),\r
526 &DxeIplAddress,\r
527 &DxeIplSize,\r
528 &DxeIplEntryPoint\r
529 );\r
530\r
531 if (Status == EFI_SUCCESS) {\r
532 //\r
533 // Set gInMemory global variable to TRUE to indicate the dxeipl is shadowed.\r
534 //\r
535 *(BOOLEAN *) ((UINTN) &gInMemory + (UINTN) DxeIplEntryPoint - (UINTN) _ModuleEntryPoint) = TRUE;\r
536 Status = ((EFI_PEIM_ENTRY_POINT) (UINTN) DxeIplEntryPoint) (DxeIplFileHeader, GetPeiServicesTablePointer());\r
537 }\r
538\r
539 return Status;\r
540}\r
541\r
542EFI_STATUS\r
543EFIAPI\r
544DxeIplLoadFile (\r
545 IN EFI_PEI_FV_FILE_LOADER_PPI *This,\r
546 IN EFI_FFS_FILE_HEADER *FfsHeader,\r
547 OUT EFI_PHYSICAL_ADDRESS *ImageAddress,\r
548 OUT UINT64 *ImageSize,\r
549 OUT EFI_PHYSICAL_ADDRESS *EntryPoint\r
550 )\r
551/*++\r
552\r
553Routine Description:\r
554\r
555 Given a pointer to an FFS file containing a PE32 image, get the\r
556 information on the PE32 image, and then "load" it so that it\r
557 can be executed.\r
558\r
559Arguments:\r
560\r
561 This - pointer to our file loader protocol\r
562\r
563 FfsHeader - pointer to the FFS file header of the FFS file that\r
564 contains the PE32 image we want to load\r
565\r
566 ImageAddress - returned address where the PE32 image is loaded\r
567\r
568 ImageSize - returned size of the loaded PE32 image\r
569\r
570 EntryPoint - entry point to the loaded PE32 image\r
571\r
572Returns:\r
573\r
574 EFI_SUCCESS - The FFS file was successfully loaded.\r
575\r
576 EFI_ERROR - Unable to load the FFS file.\r
577\r
578--*/\r
579{\r
580 EFI_PEI_PE_COFF_LOADER_PROTOCOL *PeiEfiPeiPeCoffLoader;\r
581 EFI_STATUS Status;\r
582 VOID *Pe32Data;\r
583\r
584 Pe32Data = NULL;\r
585 PeiEfiPeiPeCoffLoader = (EFI_PEI_PE_COFF_LOADER_PROTOCOL *)GetPeCoffLoaderProtocol ();\r
586\r
587 //\r
588 // Preprocess the FFS file to get a pointer to the PE32 information\r
589 // in the enclosed PE32 image.\r
590 //\r
591 Status = PeiProcessFile (\r
592 EFI_SECTION_PE32,\r
593 FfsHeader,\r
594 &Pe32Data,\r
595 NULL\r
596 );\r
597\r
598 if (EFI_ERROR (Status)) {\r
599 return Status;\r
600 }\r
601 //\r
602 // Load the PE image from the FFS file\r
603 //\r
604 Status = PeiLoadFile (\r
605 PeiEfiPeiPeCoffLoader,\r
606 Pe32Data,\r
607 ImageAddress,\r
608 ImageSize,\r
609 EntryPoint\r
610 );\r
611\r
612 return Status;\r
613}\r
614\r
615EFI_STATUS\r
616PeiProcessFile (\r
617 IN UINT16 SectionType,\r
618 IN EFI_FFS_FILE_HEADER *FfsFileHeader,\r
619 OUT VOID **Pe32Data,\r
620 IN EFI_PEI_HOB_POINTERS *OrigHob\r
621 )\r
622/*++\r
623\r
624Routine Description:\r
625\r
626Arguments:\r
627\r
628 SectionType - The type of section in the FFS file to process.\r
629\r
630 FfsFileHeader - Pointer to the FFS file to process, looking for the\r
631 specified SectionType\r
632\r
633 Pe32Data - returned pointer to the start of the PE32 image found\r
634 in the FFS file.\r
635\r
636Returns:\r
637\r
638 EFI_SUCCESS - found the PE32 section in the FFS file\r
639\r
640--*/\r
641{\r
642 EFI_STATUS Status;\r
643 VOID *SectionData;\r
644 DECOMPRESS_LIBRARY *DecompressLibrary;\r
645 UINT8 *DstBuffer;\r
646 UINT8 *ScratchBuffer;\r
647 UINT32 DstBufferSize;\r
648 UINT32 ScratchBufferSize;\r
649 EFI_COMMON_SECTION_HEADER *CmpSection;\r
650 UINTN CmpSectionLength;\r
651 UINTN OccupiedCmpSectionLength;\r
652 VOID *CmpFileData;\r
653 UINTN CmpFileSize;\r
654 EFI_COMMON_SECTION_HEADER *Section;\r
655 UINTN SectionLength;\r
656 UINTN OccupiedSectionLength;\r
657 UINT64 FileSize;\r
658 UINT32 AuthenticationStatus;\r
659 EFI_PEI_SECTION_EXTRACTION_PPI *SectionExtract;\r
660 UINT32 BufferSize;\r
661 UINT8 *Buffer;\r
662 EFI_PEI_SECURITY_PPI *Security;\r
663 BOOLEAN StartCrisisRecovery;\r
664 EFI_GUID TempGuid;\r
665 EFI_FIRMWARE_VOLUME_HEADER *FvHeader;\r
666 EFI_COMPRESSION_SECTION *CompressionSection;\r
667\r
668 //\r
669 // Initialize local variables.\r
670 //\r
671 DecompressLibrary = NULL;\r
672 DstBuffer = NULL;\r
673 DstBufferSize = 0;\r
674\r
675 Status = PeiServicesFfsFindSectionData (\r
676 EFI_SECTION_COMPRESSION,\r
677 FfsFileHeader,\r
678 &SectionData\r
679 );\r
680\r
681 //\r
682 // First process the compression section\r
683 //\r
684 if (!EFI_ERROR (Status)) {\r
685 //\r
686 // Yes, there is a compression section, so extract the contents\r
687 // Decompress the image here\r
688 //\r
689 Section = (EFI_COMMON_SECTION_HEADER *) (UINTN) (VOID *) ((UINT8 *) (FfsFileHeader) + (UINTN) sizeof (EFI_FFS_FILE_HEADER));\r
690\r
691 do {\r
692 SectionLength = *(UINT32 *) (Section->Size) & 0x00ffffff;\r
693 OccupiedSectionLength = GET_OCCUPIED_SIZE (SectionLength, 4);\r
694\r
695 //\r
696 // Was the DXE Core file encapsulated in a GUID'd section?\r
697 //\r
698 if (Section->Type == EFI_SECTION_GUID_DEFINED) {\r
699\r
700 //\r
701 // This following code constitutes the addition of the security model\r
702 // to the DXE IPL.\r
703 //\r
704 //\r
705 // Set a default authenticatino state\r
706 //\r
707 AuthenticationStatus = 0;\r
708\r
709 Status = PeiServicesLocatePpi (\r
710 &gEfiPeiSectionExtractionPpiGuid,\r
711 0,\r
712 NULL,\r
713 (VOID **)&SectionExtract\r
714 );\r
715\r
716 if (EFI_ERROR (Status)) {\r
717 return Status;\r
718 }\r
719 //\r
720 // Verify Authentication State\r
721 //\r
722 CopyMem (&TempGuid, Section + 1, sizeof (EFI_GUID));\r
723\r
724 Status = SectionExtract->PeiGetSection (\r
725 GetPeiServicesTablePointer(),\r
726 SectionExtract,\r
727 (EFI_SECTION_TYPE *) &SectionType,\r
728 &TempGuid,\r
729 0,\r
730 (VOID **) &Buffer,\r
731 &BufferSize,\r
732 &AuthenticationStatus\r
733 );\r
734\r
735 if (EFI_ERROR (Status)) {\r
736 return Status;\r
737 }\r
738 //\r
739 // If not ask the Security PPI, if exists, for disposition\r
740 //\r
741 //\r
742 Status = PeiServicesLocatePpi (\r
743 &gEfiPeiSecurityPpiGuid,\r
744 0,\r
745 NULL,\r
746 (VOID **)&Security\r
747 );\r
748 if (EFI_ERROR (Status)) {\r
749 return Status;\r
750 }\r
751\r
752 Status = Security->AuthenticationState (\r
753 GetPeiServicesTablePointer(),\r
754 (struct _EFI_PEI_SECURITY_PPI *) Security,\r
755 AuthenticationStatus,\r
756 FfsFileHeader,\r
757 &StartCrisisRecovery\r
758 );\r
759\r
760 if (EFI_ERROR (Status)) {\r
761 return Status;\r
762 }\r
763 //\r
764 // If there is a security violation, report to caller and have\r
765 // the upper-level logic possible engender a crisis recovery\r
766 //\r
767 if (StartCrisisRecovery) {\r
768 return EFI_SECURITY_VIOLATION;\r
769 }\r
770 }\r
771\r
772 if (Section->Type == EFI_SECTION_PE32) {\r
773 //\r
774 // This is what we want\r
775 //\r
776 *Pe32Data = (VOID *) (Section + 1);\r
777 return EFI_SUCCESS;\r
778 } else if (Section->Type == EFI_SECTION_COMPRESSION) {\r
779 //\r
780 // This is a compression set, expand it\r
781 //\r
782 CompressionSection = (EFI_COMPRESSION_SECTION *) Section;\r
783\r
784 switch (CompressionSection->CompressionType) {\r
785 case EFI_STANDARD_COMPRESSION:\r
786 //\r
787 // Load EFI standard compression.\r
788 //\r
789 if (FeaturePcdGet (PcdDxeIplSupportTianoDecompress)) {\r
790 DecompressLibrary = &gEfiDecompress;\r
791 } else {\r
792 ASSERT (FALSE);\r
793 return EFI_NOT_FOUND;\r
794 }\r
795 break;\r
796\r
797 case EFI_CUSTOMIZED_COMPRESSION:\r
798 //\r
799 // Load user customized compression.\r
800 //\r
801 if (FeaturePcdGet (PcdDxeIplSupportCustomDecompress)) {\r
802 DecompressLibrary = &gCustomDecompress;\r
803 } else {\r
804 ASSERT (FALSE);\r
805 return EFI_NOT_FOUND;\r
806 }\r
807 break;\r
808\r
809 case EFI_NOT_COMPRESSED:\r
810 //\r
811 // Allocate destination buffer\r
812 //\r
813 DstBufferSize = CompressionSection->UncompressedLength;\r
814 DstBuffer = AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize));\r
815 if (DstBuffer == NULL) {\r
816 return EFI_OUT_OF_RESOURCES;\r
817 }\r
818 //\r
819 // stream is not actually compressed, just encapsulated. So just copy it.\r
820 //\r
821 CopyMem (DstBuffer, CompressionSection + 1, DstBufferSize);\r
822 break;\r
823\r
824 default:\r
825 //\r
826 // Don't support other unknown compression type.\r
827 //\r
828 ASSERT_EFI_ERROR (Status);\r
829 return EFI_NOT_FOUND;\r
830 }\r
831 \r
832 if (CompressionSection->CompressionType != EFI_NOT_COMPRESSED) {\r
833 //\r
834 // For compressed data, decompress them to dstbuffer.\r
835 //\r
836 Status = DecompressLibrary->GetInfo (\r
837 (UINT8 *) ((EFI_COMPRESSION_SECTION *) Section + 1),\r
838 (UINT32) SectionLength - sizeof (EFI_COMPRESSION_SECTION),\r
839 &DstBufferSize,\r
840 &ScratchBufferSize\r
841 );\r
842 if (EFI_ERROR (Status)) {\r
843 //\r
844 // GetInfo failed\r
845 //\r
846 DEBUG ((EFI_D_ERROR, "Decompress GetInfo Failed - %r\n", Status));\r
847 return EFI_NOT_FOUND;\r
848 }\r
849 \r
850 //\r
851 // Allocate scratch buffer\r
852 //\r
853 ScratchBuffer = AllocatePages (EFI_SIZE_TO_PAGES (ScratchBufferSize));\r
854 if (ScratchBuffer == NULL) {\r
855 return EFI_OUT_OF_RESOURCES;\r
856 }\r
857 \r
858 //\r
859 // Allocate destination buffer\r
860 //\r
861 DstBuffer = AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize));\r
862 if (DstBuffer == NULL) {\r
863 return EFI_OUT_OF_RESOURCES;\r
864 }\r
865 \r
866 //\r
867 // Call decompress function\r
868 //\r
869 Status = DecompressLibrary->Decompress (\r
870 (CHAR8 *) ((EFI_COMPRESSION_SECTION *) Section + 1),\r
871 DstBuffer,\r
872 ScratchBuffer\r
873 );\r
874 if (EFI_ERROR (Status)) {\r
875 //\r
876 // Decompress failed\r
877 //\r
878 DEBUG ((EFI_D_ERROR, "Decompress Failed - %r\n", Status));\r
879 return EFI_NOT_FOUND;\r
880 }\r
881 }\r
882\r
883 //\r
884 // Decompress successfully.\r
885 // Loop the decompressed data searching for expected section.\r
886 //\r
887 CmpSection = (EFI_COMMON_SECTION_HEADER *) DstBuffer;\r
888 CmpFileData = (VOID *) DstBuffer;\r
889 CmpFileSize = DstBufferSize;\r
890 do {\r
891 CmpSectionLength = *(UINT32 *) (CmpSection->Size) & 0x00ffffff;\r
892 if (CmpSection->Type == SectionType) {\r
893 //\r
894 // This is what we want\r
895 //\r
896 if (SectionType == EFI_SECTION_PE32) {\r
897 *Pe32Data = (VOID *) (CmpSection + 1);\r
898 return EFI_SUCCESS;\r
899 } else if (SectionType == EFI_SECTION_FIRMWARE_VOLUME_IMAGE) {\r
900 // \r
901 // Firmware Volume Image in this Section\r
902 // Skip the section header to get FvHeader\r
903 //\r
904 FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) (CmpSection + 1);\r
905 \r
906 if (FvHeader->Signature == EFI_FVH_SIGNATURE) {\r
907 //\r
908 // Because FvLength in FvHeader is UINT64 type, \r
909 // so FvHeader must meed at least 8 bytes alignment.\r
910 // If current FvImage base address doesn't meet its alignment,\r
911 // we need to reload this FvImage to another correct memory address.\r
912 //\r
913 if (((UINTN) FvHeader % sizeof (UINT64)) != 0) {\r
914 DstBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES ((UINTN) CmpSectionLength - sizeof (EFI_COMMON_SECTION_HEADER)), sizeof (UINT64));\r
915 if (DstBuffer == NULL) {\r
916 return EFI_OUT_OF_RESOURCES;\r
917 }\r
918 CopyMem (DstBuffer, FvHeader, (UINTN) CmpSectionLength - sizeof (EFI_COMMON_SECTION_HEADER));\r
919 FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) DstBuffer; \r
920 }\r
921\r
922 //\r
923 // Build new FvHob for new decompressed Fv image.\r
924 //\r
925 BuildFvHob ((EFI_PHYSICAL_ADDRESS) (UINTN) FvHeader, FvHeader->FvLength);\r
926 \r
927 //\r
928 // Set the original FvHob to unused.\r
929 //\r
930 if (OrigHob != NULL) {\r
931 OrigHob->Header->HobType = EFI_HOB_TYPE_UNUSED;\r
932 }\r
933 \r
934 //\r
935 // return found FvImage data.\r
936 //\r
937 *Pe32Data = (VOID *) FvHeader;\r
938 return EFI_SUCCESS;\r
939 }\r
940 }\r
941 }\r
942 OccupiedCmpSectionLength = GET_OCCUPIED_SIZE (CmpSectionLength, 4);\r
943 CmpSection = (EFI_COMMON_SECTION_HEADER *) ((UINT8 *) CmpSection + OccupiedCmpSectionLength);\r
944 } while (CmpSection->Type != 0 && (UINTN) ((UINT8 *) CmpSection - (UINT8 *) CmpFileData) < CmpFileSize);\r
945 }\r
946 //\r
947 // End of the decompression activity\r
948 //\r
949\r
950 Section = (EFI_COMMON_SECTION_HEADER *) ((UINT8 *) Section + OccupiedSectionLength);\r
951 FileSize = FfsFileHeader->Size[0] & 0xFF;\r
952 FileSize += (FfsFileHeader->Size[1] << 8) & 0xFF00;\r
953 FileSize += (FfsFileHeader->Size[2] << 16) & 0xFF0000;\r
954 FileSize &= 0x00FFFFFF;\r
955 } while (Section->Type != 0 && (UINTN) ((UINT8 *) Section - (UINT8 *) FfsFileHeader) < FileSize);\r
956 \r
957 //\r
958 // search all sections (compression and non compression) in this FFS, don't \r
959 // find expected section.\r
960 //\r
961 return EFI_NOT_FOUND;\r
962 } else {\r
963 //\r
964 // For those FFS that doesn't contain compression section, directly search \r
965 // PE or TE section in this FFS.\r
966 //\r
967\r
968 Status = PeiServicesFfsFindSectionData (\r
969 EFI_SECTION_PE32,\r
970 FfsFileHeader,\r
971 &SectionData\r
972 );\r
973\r
974 if (EFI_ERROR (Status)) {\r
975 Status = PeiServicesFfsFindSectionData (\r
976 EFI_SECTION_TE,\r
977 FfsFileHeader,\r
978 &SectionData\r
979 );\r
980 if (EFI_ERROR (Status)) {\r
981 return Status;\r
982 }\r
983 }\r
984 }\r
985\r
986 *Pe32Data = SectionData;\r
987\r
988 return EFI_SUCCESS;\r
989}\r
990\r
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