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1 | /** @file\r | |
2 | Last PEIM.\r | |
3 | Responsibility of this module is to load the DXE Core from a Firmware Volume.\r | |
4 | \r | |
5 | Copyright (c) 2006 - 2009, Intel Corporation. <BR>\r | |
6 | All rights reserved. This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #include "DxeIpl.h"\r | |
17 | \r | |
18 | \r | |
19 | //\r | |
20 | // Module Globals used in the DXE to PEI hand off\r | |
21 | // These must be module globals, so the stack can be switched\r | |
22 | //\r | |
23 | CONST EFI_DXE_IPL_PPI mDxeIplPpi = {\r | |
24 | DxeLoadCore\r | |
25 | };\r | |
26 | \r | |
27 | CONST EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI mCustomGuidedSectionExtractionPpi = {\r | |
28 | CustomGuidedSectionExtract\r | |
29 | };\r | |
30 | \r | |
31 | CONST EFI_PEI_DECOMPRESS_PPI mDecompressPpi = {\r | |
32 | Decompress\r | |
33 | };\r | |
34 | \r | |
35 | CONST EFI_PEI_PPI_DESCRIPTOR mPpiList[] = {\r | |
36 | {\r | |
37 | EFI_PEI_PPI_DESCRIPTOR_PPI,\r | |
38 | &gEfiDxeIplPpiGuid,\r | |
39 | (VOID *) &mDxeIplPpi\r | |
40 | },\r | |
41 | {\r | |
42 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
43 | &gEfiPeiDecompressPpiGuid,\r | |
44 | (VOID *) &mDecompressPpi\r | |
45 | }\r | |
46 | };\r | |
47 | \r | |
48 | CONST EFI_PEI_PPI_DESCRIPTOR gEndOfPeiSignalPpi = {\r | |
49 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
50 | &gEfiEndOfPeiSignalPpiGuid,\r | |
51 | NULL\r | |
52 | };\r | |
53 | \r | |
54 | /**\r | |
55 | Entry point of DXE IPL PEIM.\r | |
56 | \r | |
57 | This function installs DXE IPL PPI and Decompress PPI. It also reloads\r | |
58 | itself to memory on non-S3 resume boot path.\r | |
59 | \r | |
60 | @param FileHandle Handle of the file being invoked.\r | |
61 | @param PeiServices Describes the list of possible PEI Services.\r | |
62 | \r | |
63 | @retval EFI_SUCESS The entry point of DXE IPL PEIM executes successfully.\r | |
64 | @retval Others Some error occurs during the execution of this function. \r | |
65 | \r | |
66 | **/\r | |
67 | EFI_STATUS\r | |
68 | EFIAPI\r | |
69 | PeimInitializeDxeIpl (\r | |
70 | IN EFI_PEI_FILE_HANDLE FileHandle,\r | |
71 | IN CONST EFI_PEI_SERVICES **PeiServices\r | |
72 | )\r | |
73 | {\r | |
74 | EFI_STATUS Status;\r | |
75 | EFI_BOOT_MODE BootMode;\r | |
76 | EFI_GUID *ExtractHandlerGuidTable;\r | |
77 | UINTN ExtractHandlerNumber;\r | |
78 | EFI_PEI_PPI_DESCRIPTOR *GuidPpi;\r | |
79 | \r | |
80 | BootMode = GetBootModeHob ();\r | |
81 | \r | |
82 | if (BootMode != BOOT_ON_S3_RESUME) {\r | |
83 | Status = PeiServicesRegisterForShadow (FileHandle);\r | |
84 | if (Status == EFI_SUCCESS) {\r | |
85 | //\r | |
86 | // EFI_SUCESS means it is the first time to call register for shadow. \r | |
87 | // \r | |
88 | return Status;\r | |
89 | }\r | |
90 | \r | |
91 | //\r | |
92 | // Ensure that DXE IPL is shadowed to permanent memory.\r | |
93 | //\r | |
94 | ASSERT (Status == EFI_ALREADY_STARTED);\r | |
95 | \r | |
96 | //\r | |
97 | // Get custom extract guided section method guid list \r | |
98 | //\r | |
99 | ExtractHandlerNumber = ExtractGuidedSectionGetGuidList (&ExtractHandlerGuidTable);\r | |
100 | \r | |
101 | //\r | |
102 | // Install custom extraction guid PPI\r | |
103 | //\r | |
104 | if (ExtractHandlerNumber > 0) {\r | |
105 | GuidPpi = (EFI_PEI_PPI_DESCRIPTOR *) AllocatePool (ExtractHandlerNumber * sizeof (EFI_PEI_PPI_DESCRIPTOR));\r | |
106 | ASSERT (GuidPpi != NULL);\r | |
107 | while (ExtractHandlerNumber-- > 0) {\r | |
108 | GuidPpi->Flags = EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST;\r | |
109 | GuidPpi->Ppi = (VOID *) &mCustomGuidedSectionExtractionPpi;\r | |
110 | GuidPpi->Guid = &ExtractHandlerGuidTable[ExtractHandlerNumber];\r | |
111 | Status = PeiServicesInstallPpi (GuidPpi++);\r | |
112 | ASSERT_EFI_ERROR(Status);\r | |
113 | }\r | |
114 | }\r | |
115 | \r | |
116 | }\r | |
117 | \r | |
118 | //\r | |
119 | // Install DxeIpl and Decompress PPIs.\r | |
120 | //\r | |
121 | Status = PeiServicesInstallPpi (mPpiList);\r | |
122 | ASSERT_EFI_ERROR(Status);\r | |
123 | \r | |
124 | return Status;\r | |
125 | }\r | |
126 | \r | |
127 | /**\r | |
128 | Main entry point to last PEIM. \r | |
129 | \r | |
130 | This function finds DXE Core in the firmware volume and transfer the control to\r | |
131 | DXE core.\r | |
132 | \r | |
133 | @param This Entry point for DXE IPL PPI.\r | |
134 | @param PeiServices General purpose services available to every PEIM.\r | |
135 | @param HobList Address to the Pei HOB list.\r | |
136 | \r | |
137 | @return EFI_SUCCESS DXE core was successfully loaded. \r | |
138 | @return EFI_OUT_OF_RESOURCES There are not enough resources to load DXE core.\r | |
139 | \r | |
140 | **/\r | |
141 | EFI_STATUS\r | |
142 | EFIAPI\r | |
143 | DxeLoadCore (\r | |
144 | IN CONST EFI_DXE_IPL_PPI *This,\r | |
145 | IN EFI_PEI_SERVICES **PeiServices,\r | |
146 | IN EFI_PEI_HOB_POINTERS HobList\r | |
147 | )\r | |
148 | {\r | |
149 | EFI_STATUS Status;\r | |
150 | EFI_FV_FILE_INFO DxeCoreFileInfo;\r | |
151 | EFI_PHYSICAL_ADDRESS DxeCoreAddress;\r | |
152 | UINT64 DxeCoreSize;\r | |
153 | EFI_PHYSICAL_ADDRESS DxeCoreEntryPoint;\r | |
154 | EFI_BOOT_MODE BootMode;\r | |
155 | EFI_PEI_FILE_HANDLE FileHandle;\r | |
156 | EFI_PEI_READ_ONLY_VARIABLE2_PPI *Variable;\r | |
157 | UINTN DataSize;\r | |
158 | EFI_MEMORY_TYPE_INFORMATION MemoryData[EfiMaxMemoryType + 1];\r | |
159 | \r | |
160 | //\r | |
161 | // if in S3 Resume, restore configure\r | |
162 | //\r | |
163 | BootMode = GetBootModeHob ();\r | |
164 | \r | |
165 | if (BootMode == BOOT_ON_S3_RESUME) {\r | |
166 | Status = AcpiS3ResumeOs();\r | |
167 | ASSERT_EFI_ERROR (Status);\r | |
168 | } else if (BootMode == BOOT_IN_RECOVERY_MODE) {\r | |
169 | Status = PeiRecoverFirmware ();\r | |
170 | if (EFI_ERROR (Status)) {\r | |
171 | DEBUG ((DEBUG_ERROR, "Load Recovery Capsule Failed.(Status = %r)\n", Status));\r | |
172 | CpuDeadLoop ();\r | |
173 | }\r | |
174 | \r | |
175 | //\r | |
176 | // Now should have a HOB with the DXE core\r | |
177 | //\r | |
178 | }\r | |
179 | \r | |
180 | Status = PeiServicesLocatePpi (\r | |
181 | &gEfiPeiReadOnlyVariable2PpiGuid,\r | |
182 | 0,\r | |
183 | NULL,\r | |
184 | (VOID **)&Variable\r | |
185 | );\r | |
186 | if (!EFI_ERROR (Status)) {\r | |
187 | DataSize = sizeof (MemoryData);\r | |
188 | Status = Variable->GetVariable ( \r | |
189 | Variable, \r | |
190 | EFI_MEMORY_TYPE_INFORMATION_VARIABLE_NAME,\r | |
191 | &gEfiMemoryTypeInformationGuid,\r | |
192 | NULL,\r | |
193 | &DataSize,\r | |
194 | &MemoryData\r | |
195 | );\r | |
196 | if (!EFI_ERROR (Status)) {\r | |
197 | //\r | |
198 | // Build the GUID'd HOB for DXE\r | |
199 | //\r | |
200 | BuildGuidDataHob (\r | |
201 | &gEfiMemoryTypeInformationGuid,\r | |
202 | MemoryData,\r | |
203 | DataSize\r | |
204 | );\r | |
205 | }\r | |
206 | }\r | |
207 | \r | |
208 | //\r | |
209 | // Look in all the FVs present in PEI and find the DXE Core FileHandle\r | |
210 | //\r | |
211 | FileHandle = DxeIplFindDxeCore ();\r | |
212 | \r | |
213 | //\r | |
214 | // Load the DXE Core from a Firmware Volume, may use LoadFile PPI to do this to save code size.\r | |
215 | //\r | |
216 | Status = PeiLoadFile (\r | |
217 | FileHandle,\r | |
218 | &DxeCoreAddress,\r | |
219 | &DxeCoreSize,\r | |
220 | &DxeCoreEntryPoint\r | |
221 | );\r | |
222 | ASSERT_EFI_ERROR (Status);\r | |
223 | \r | |
224 | //\r | |
225 | // Get the DxeCore File Info from the FileHandle for the DxeCore GUID file name.\r | |
226 | //\r | |
227 | Status = PeiServicesFfsGetFileInfo (FileHandle, &DxeCoreFileInfo);\r | |
228 | ASSERT_EFI_ERROR (Status);\r | |
229 | \r | |
230 | //\r | |
231 | // Add HOB for the DXE Core\r | |
232 | //\r | |
233 | BuildModuleHob (\r | |
234 | &DxeCoreFileInfo.FileName,\r | |
235 | DxeCoreAddress,\r | |
236 | ALIGN_VALUE (DxeCoreSize, EFI_PAGE_SIZE),\r | |
237 | DxeCoreEntryPoint\r | |
238 | );\r | |
239 | \r | |
240 | //\r | |
241 | // Report Status Code EFI_SW_PEI_PC_HANDOFF_TO_NEXT\r | |
242 | //\r | |
243 | REPORT_STATUS_CODE (EFI_PROGRESS_CODE, PcdGet32 (PcdStatusCodeValuePeiHandoffToDxe));\r | |
244 | \r | |
245 | DEBUG ((DEBUG_INFO | DEBUG_LOAD, "Loading DXE CORE at 0x%11p EntryPoint=0x%11p\n", (VOID *)(UINTN)DxeCoreAddress, FUNCTION_ENTRY_POINT (DxeCoreEntryPoint)));\r | |
246 | \r | |
247 | //\r | |
248 | // Transfer control to the DXE Core\r | |
249 | // The hand off state is simply a pointer to the HOB list\r | |
250 | //\r | |
251 | HandOffToDxeCore (DxeCoreEntryPoint, HobList);\r | |
252 | //\r | |
253 | // If we get here, then the DXE Core returned. This is an error\r | |
254 | // DxeCore should not return.\r | |
255 | //\r | |
256 | ASSERT (FALSE);\r | |
257 | CpuDeadLoop ();\r | |
258 | \r | |
259 | return EFI_OUT_OF_RESOURCES;\r | |
260 | }\r | |
261 | \r | |
262 | \r | |
263 | /**\r | |
264 | Searches DxeCore in all firmware Volumes and loads the first\r | |
265 | instance that contains DxeCore.\r | |
266 | \r | |
267 | @return FileHandle of DxeCore to load DxeCore.\r | |
268 | \r | |
269 | **/\r | |
270 | EFI_PEI_FILE_HANDLE\r | |
271 | DxeIplFindDxeCore (\r | |
272 | VOID\r | |
273 | )\r | |
274 | {\r | |
275 | EFI_STATUS Status;\r | |
276 | UINTN Instance;\r | |
277 | EFI_PEI_FV_HANDLE VolumeHandle;\r | |
278 | EFI_PEI_FILE_HANDLE FileHandle;\r | |
279 | \r | |
280 | Instance = 0;\r | |
281 | while (TRUE) {\r | |
282 | //\r | |
283 | // Traverse all firmware volume instances\r | |
284 | //\r | |
285 | Status = PeiServicesFfsFindNextVolume (Instance, &VolumeHandle);\r | |
286 | //\r | |
287 | // If some error occurs here, then we cannot find any firmware\r | |
288 | // volume that may contain DxeCore.\r | |
289 | //\r | |
290 | ASSERT_EFI_ERROR (Status);\r | |
291 | \r | |
292 | //\r | |
293 | // Find the DxeCore file type from the beginning in this firmware volume.\r | |
294 | //\r | |
295 | FileHandle = NULL;\r | |
296 | Status = PeiServicesFfsFindNextFile (EFI_FV_FILETYPE_DXE_CORE, VolumeHandle, &FileHandle);\r | |
297 | if (!EFI_ERROR (Status)) {\r | |
298 | //\r | |
299 | // Find DxeCore FileHandle in this volume, then we skip other firmware volume and\r | |
300 | // return the FileHandle.\r | |
301 | //\r | |
302 | return FileHandle;\r | |
303 | }\r | |
304 | //\r | |
305 | // We cannot find DxeCore in this firmware volume, then search the next volume.\r | |
306 | //\r | |
307 | Instance++;\r | |
308 | }\r | |
309 | }\r | |
310 | \r | |
311 | \r | |
312 | /**\r | |
313 | Loads and relocates a PE/COFF image into memory.\r | |
314 | \r | |
315 | @param FileHandle The image file handle\r | |
316 | @param ImageAddress The base address of the relocated PE/COFF image\r | |
317 | @param ImageSize The size of the relocated PE/COFF image\r | |
318 | @param EntryPoint The entry point of the relocated PE/COFF image\r | |
319 | \r | |
320 | @return EFI_SUCCESS The file was loaded and relocated\r | |
321 | @return EFI_OUT_OF_RESOURCES There was not enough memory to load and relocate the PE/COFF file\r | |
322 | \r | |
323 | **/\r | |
324 | EFI_STATUS\r | |
325 | PeiLoadFile (\r | |
326 | IN EFI_PEI_FILE_HANDLE FileHandle,\r | |
327 | OUT EFI_PHYSICAL_ADDRESS *ImageAddress,\r | |
328 | OUT UINT64 *ImageSize,\r | |
329 | OUT EFI_PHYSICAL_ADDRESS *EntryPoint\r | |
330 | )\r | |
331 | {\r | |
332 | \r | |
333 | EFI_STATUS Status;\r | |
334 | PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;\r | |
335 | VOID *Pe32Data;\r | |
336 | \r | |
337 | //\r | |
338 | // First try to find the PE32 section in this ffs file.\r | |
339 | //\r | |
340 | Status = PeiServicesFfsFindSectionData (\r | |
341 | EFI_SECTION_PE32,\r | |
342 | FileHandle,\r | |
343 | &Pe32Data\r | |
344 | );\r | |
345 | if (EFI_ERROR (Status)) {\r | |
346 | //\r | |
347 | // NO image types we support so exit.\r | |
348 | //\r | |
349 | return Status;\r | |
350 | }\r | |
351 | \r | |
352 | ZeroMem (&ImageContext, sizeof (ImageContext));\r | |
353 | ImageContext.Handle = Pe32Data;\r | |
354 | ImageContext.ImageRead = PeiImageRead;\r | |
355 | \r | |
356 | \r | |
357 | Status = PeCoffLoaderGetImageInfo (&ImageContext);\r | |
358 | if (EFI_ERROR (Status)) {\r | |
359 | return Status;\r | |
360 | }\r | |
361 | //\r | |
362 | // Allocate Memory for the image\r | |
363 | //\r | |
364 | Status = PeiServicesAllocatePages (\r | |
365 | EfiBootServicesCode, \r | |
366 | EFI_SIZE_TO_PAGES ((UINT32) ImageContext.ImageSize), \r | |
367 | &ImageContext.ImageAddress\r | |
368 | );\r | |
369 | ASSERT_EFI_ERROR (Status);\r | |
370 | ASSERT (ImageContext.ImageAddress != 0);\r | |
371 | \r | |
372 | //\r | |
373 | // Load the image to our new buffer\r | |
374 | //\r | |
375 | Status = PeCoffLoaderLoadImage (&ImageContext);\r | |
376 | if (EFI_ERROR (Status)) {\r | |
377 | return Status;\r | |
378 | }\r | |
379 | //\r | |
380 | // Relocate the image in our new buffer\r | |
381 | //\r | |
382 | Status = PeCoffLoaderRelocateImage (&ImageContext);\r | |
383 | if (EFI_ERROR (Status)) {\r | |
384 | return Status;\r | |
385 | }\r | |
386 | \r | |
387 | //\r | |
388 | // Flush the instruction cache so the image data are written before we execute it\r | |
389 | //\r | |
390 | InvalidateInstructionCacheRange ((VOID *)(UINTN) ImageContext.ImageAddress, (UINTN) ImageContext.ImageSize);\r | |
391 | \r | |
392 | *ImageAddress = ImageContext.ImageAddress;\r | |
393 | *ImageSize = ImageContext.ImageSize;\r | |
394 | *EntryPoint = ImageContext.EntryPoint;\r | |
395 | \r | |
396 | return EFI_SUCCESS;\r | |
397 | }\r | |
398 | \r | |
399 | \r | |
400 | \r | |
401 | \r | |
402 | /**\r | |
403 | The ExtractSection() function processes the input section and\r | |
404 | returns a pointer to the section contents. If the section being\r | |
405 | extracted does not require processing (if the section\r | |
406 | GuidedSectionHeader.Attributes has the\r | |
407 | EFI_GUIDED_SECTION_PROCESSING_REQUIRED field cleared), then\r | |
408 | OutputBuffer is just updated to point to the start of the\r | |
409 | section's contents. Otherwise, *Buffer must be allocated\r | |
410 | from PEI permanent memory.\r | |
411 | \r | |
412 | @param This Indicates the\r | |
413 | EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI instance.\r | |
414 | Buffer containing the input GUIDed section to be\r | |
415 | processed. OutputBuffer OutputBuffer is\r | |
416 | allocated from PEI permanent memory and contains\r | |
417 | the new section stream.\r | |
418 | @param InputSection A pointer to the input buffer, which contains\r | |
419 | the input section to be processed.\r | |
420 | @param OutputBuffer A pointer to a caller-allocated buffer, whose\r | |
421 | size is specified by the contents of OutputSize.\r | |
422 | @param OutputSize A pointer to a caller-allocated\r | |
423 | UINTN in which the size of *OutputBuffer\r | |
424 | allocation is stored. If the function\r | |
425 | returns anything other than EFI_SUCCESS,\r | |
426 | the value of OutputSize is undefined.\r | |
427 | @param AuthenticationStatus A pointer to a caller-allocated\r | |
428 | UINT32 that indicates the\r | |
429 | authentication status of the\r | |
430 | output buffer. If the input\r | |
431 | section's GuidedSectionHeader.\r | |
432 | Attributes field has the\r | |
433 | EFI_GUIDED_SECTION_AUTH_STATUS_VALID \r | |
434 | bit as clear,\r | |
435 | AuthenticationStatus must return\r | |
436 | zero. These bits reflect the\r | |
437 | status of the extraction\r | |
438 | operation. If the function\r | |
439 | returns anything other than\r | |
440 | EFI_SUCCESS, the value of\r | |
441 | AuthenticationStatus is\r | |
442 | undefined.\r | |
443 | \r | |
444 | @retval EFI_SUCCESS The InputSection was\r | |
445 | successfully processed and the\r | |
446 | section contents were returned.\r | |
447 | \r | |
448 | @retval EFI_OUT_OF_RESOURCES The system has insufficient\r | |
449 | resources to process the request.\r | |
450 | \r | |
451 | @retval EFI_INVALID_PARAMETER The GUID in InputSection does\r | |
452 | not match this instance of the\r | |
453 | GUIDed Section Extraction PPI.\r | |
454 | \r | |
455 | **/\r | |
456 | EFI_STATUS\r | |
457 | EFIAPI\r | |
458 | CustomGuidedSectionExtract (\r | |
459 | IN CONST EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI *This,\r | |
460 | IN CONST VOID *InputSection,\r | |
461 | OUT VOID **OutputBuffer,\r | |
462 | OUT UINTN *OutputSize,\r | |
463 | OUT UINT32 *AuthenticationStatus\r | |
464 | )\r | |
465 | {\r | |
466 | EFI_STATUS Status;\r | |
467 | UINT8 *ScratchBuffer;\r | |
468 | UINT32 ScratchBufferSize;\r | |
469 | UINT32 OutputBufferSize;\r | |
470 | UINT16 SectionAttribute;\r | |
471 | \r | |
472 | //\r | |
473 | // Init local variable\r | |
474 | //\r | |
475 | ScratchBuffer = NULL;\r | |
476 | \r | |
477 | //\r | |
478 | // Call GetInfo to get the size and attribute of input guided section data.\r | |
479 | //\r | |
480 | Status = ExtractGuidedSectionGetInfo (\r | |
481 | InputSection,\r | |
482 | &OutputBufferSize,\r | |
483 | &ScratchBufferSize,\r | |
484 | &SectionAttribute\r | |
485 | );\r | |
486 | \r | |
487 | if (EFI_ERROR (Status)) {\r | |
488 | DEBUG ((DEBUG_ERROR, "GetInfo from guided section Failed - %r\n", Status));\r | |
489 | return Status;\r | |
490 | }\r | |
491 | \r | |
492 | if (ScratchBufferSize != 0) {\r | |
493 | //\r | |
494 | // Allocate scratch buffer\r | |
495 | //\r | |
496 | ScratchBuffer = AllocatePages (EFI_SIZE_TO_PAGES (ScratchBufferSize));\r | |
497 | if (ScratchBuffer == NULL) {\r | |
498 | return EFI_OUT_OF_RESOURCES;\r | |
499 | }\r | |
500 | }\r | |
501 | \r | |
502 | if (((SectionAttribute & EFI_GUIDED_SECTION_PROCESSING_REQUIRED) != 0) && OutputBufferSize > 0) { \r | |
503 | //\r | |
504 | // Allocate output buffer\r | |
505 | //\r | |
506 | *OutputBuffer = AllocatePages (EFI_SIZE_TO_PAGES (OutputBufferSize) + 1);\r | |
507 | if (*OutputBuffer == NULL) {\r | |
508 | return EFI_OUT_OF_RESOURCES;\r | |
509 | }\r | |
510 | DEBUG ((DEBUG_INFO, "Customized Guided section Memory Size required is 0x%x and address is 0x%p\n", OutputBufferSize, *OutputBuffer));\r | |
511 | //\r | |
512 | // *OutputBuffer still is one section. Adjust *OutputBuffer offset, \r | |
513 | // skip EFI section header to make section data at page alignment.\r | |
514 | //\r | |
515 | *OutputBuffer = (VOID *)((UINT8 *) *OutputBuffer + EFI_PAGE_SIZE - sizeof (EFI_COMMON_SECTION_HEADER));\r | |
516 | }\r | |
517 | \r | |
518 | Status = ExtractGuidedSectionDecode (\r | |
519 | InputSection, \r | |
520 | OutputBuffer,\r | |
521 | ScratchBuffer,\r | |
522 | AuthenticationStatus\r | |
523 | );\r | |
524 | if (EFI_ERROR (Status)) {\r | |
525 | //\r | |
526 | // Decode failed\r | |
527 | //\r | |
528 | DEBUG ((DEBUG_ERROR, "Extract guided section Failed - %r\n", Status));\r | |
529 | return Status;\r | |
530 | }\r | |
531 | \r | |
532 | *OutputSize = (UINTN) OutputBufferSize;\r | |
533 | \r | |
534 | return EFI_SUCCESS;\r | |
535 | }\r | |
536 | \r | |
537 | \r | |
538 | \r | |
539 | /**\r | |
540 | Decompresses a section to the output buffer.\r | |
541 | \r | |
542 | This function looks up the compression type field in the input section and\r | |
543 | applies the appropriate compression algorithm to compress the section to a\r | |
544 | callee allocated buffer.\r | |
545 | \r | |
546 | @param This Points to this instance of the\r | |
547 | EFI_PEI_DECOMPRESS_PEI PPI.\r | |
548 | @param CompressionSection Points to the compressed section.\r | |
549 | @param OutputBuffer Holds the returned pointer to the decompressed\r | |
550 | sections.\r | |
551 | @param OutputSize Holds the returned size of the decompress\r | |
552 | section streams.\r | |
553 | \r | |
554 | @retval EFI_SUCCESS The section was decompressed successfully.\r | |
555 | OutputBuffer contains the resulting data and\r | |
556 | OutputSize contains the resulting size.\r | |
557 | \r | |
558 | **/\r | |
559 | EFI_STATUS\r | |
560 | EFIAPI \r | |
561 | Decompress (\r | |
562 | IN CONST EFI_PEI_DECOMPRESS_PPI *This,\r | |
563 | IN CONST EFI_COMPRESSION_SECTION *CompressionSection,\r | |
564 | OUT VOID **OutputBuffer,\r | |
565 | OUT UINTN *OutputSize\r | |
566 | )\r | |
567 | {\r | |
568 | EFI_STATUS Status;\r | |
569 | UINT8 *DstBuffer;\r | |
570 | UINT8 *ScratchBuffer;\r | |
571 | UINTN DstBufferSize;\r | |
572 | UINT32 ScratchBufferSize;\r | |
573 | EFI_COMMON_SECTION_HEADER *Section;\r | |
574 | UINTN SectionLength;\r | |
575 | \r | |
576 | if (CompressionSection->CommonHeader.Type != EFI_SECTION_COMPRESSION) {\r | |
577 | ASSERT (FALSE);\r | |
578 | return EFI_INVALID_PARAMETER;\r | |
579 | }\r | |
580 | \r | |
581 | Section = (EFI_COMMON_SECTION_HEADER *) CompressionSection;\r | |
582 | SectionLength = *(UINT32 *) (Section->Size) & 0x00ffffff;\r | |
583 | \r | |
584 | //\r | |
585 | // This is a compression set, expand it\r | |
586 | //\r | |
587 | switch (CompressionSection->CompressionType) {\r | |
588 | case EFI_STANDARD_COMPRESSION:\r | |
589 | //\r | |
590 | // Load EFI standard compression.\r | |
591 | // For compressed data, decompress them to destination buffer.\r | |
592 | //\r | |
593 | Status = UefiDecompressGetInfo (\r | |
594 | (UINT8 *) ((EFI_COMPRESSION_SECTION *) Section + 1),\r | |
595 | (UINT32) SectionLength - sizeof (EFI_COMPRESSION_SECTION),\r | |
596 | (UINT32 *) &DstBufferSize,\r | |
597 | &ScratchBufferSize\r | |
598 | );\r | |
599 | if (EFI_ERROR (Status)) {\r | |
600 | //\r | |
601 | // GetInfo failed\r | |
602 | //\r | |
603 | DEBUG ((DEBUG_ERROR, "Decompress GetInfo Failed - %r\n", Status));\r | |
604 | return EFI_NOT_FOUND;\r | |
605 | }\r | |
606 | //\r | |
607 | // Allocate scratch buffer\r | |
608 | //\r | |
609 | ScratchBuffer = AllocatePages (EFI_SIZE_TO_PAGES (ScratchBufferSize));\r | |
610 | if (ScratchBuffer == NULL) {\r | |
611 | return EFI_OUT_OF_RESOURCES;\r | |
612 | }\r | |
613 | //\r | |
614 | // Allocate destination buffer, extra one page for adjustment \r | |
615 | //\r | |
616 | DstBuffer = AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize) + 1);\r | |
617 | if (DstBuffer == NULL) {\r | |
618 | return EFI_OUT_OF_RESOURCES;\r | |
619 | }\r | |
620 | //\r | |
621 | // DstBuffer still is one section. Adjust DstBuffer offset, skip EFI section header\r | |
622 | // to make section data at page alignment.\r | |
623 | //\r | |
624 | DstBuffer = DstBuffer + EFI_PAGE_SIZE - sizeof (EFI_COMMON_SECTION_HEADER);\r | |
625 | //\r | |
626 | // Call decompress function\r | |
627 | //\r | |
628 | Status = UefiDecompress (\r | |
629 | (CHAR8 *) ((EFI_COMPRESSION_SECTION *) Section + 1),\r | |
630 | DstBuffer,\r | |
631 | ScratchBuffer\r | |
632 | );\r | |
633 | if (EFI_ERROR (Status)) {\r | |
634 | //\r | |
635 | // Decompress failed\r | |
636 | //\r | |
637 | DEBUG ((DEBUG_ERROR, "Decompress Failed - %r\n", Status));\r | |
638 | return EFI_NOT_FOUND;\r | |
639 | }\r | |
640 | break;\r | |
641 | \r | |
642 | case EFI_NOT_COMPRESSED:\r | |
643 | //\r | |
644 | // Allocate destination buffer\r | |
645 | //\r | |
646 | DstBufferSize = CompressionSection->UncompressedLength;\r | |
647 | DstBuffer = AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize) + 1);\r | |
648 | if (DstBuffer == NULL) {\r | |
649 | return EFI_OUT_OF_RESOURCES;\r | |
650 | }\r | |
651 | //\r | |
652 | // Adjust DstBuffer offset, skip EFI section header\r | |
653 | // to make section data at page alignment.\r | |
654 | //\r | |
655 | DstBuffer = DstBuffer + EFI_PAGE_SIZE - sizeof (EFI_COMMON_SECTION_HEADER);\r | |
656 | //\r | |
657 | // stream is not actually compressed, just encapsulated. So just copy it.\r | |
658 | //\r | |
659 | CopyMem (DstBuffer, CompressionSection + 1, DstBufferSize);\r | |
660 | break;\r | |
661 | \r | |
662 | default:\r | |
663 | //\r | |
664 | // Don't support other unknown compression type.\r | |
665 | //\r | |
666 | ASSERT (FALSE);\r | |
667 | return EFI_NOT_FOUND;\r | |
668 | }\r | |
669 | \r | |
670 | *OutputSize = DstBufferSize;\r | |
671 | *OutputBuffer = DstBuffer;\r | |
672 | \r | |
673 | return EFI_SUCCESS;\r | |
674 | }\r | |
675 | \r | |
676 | \r | |
677 | /**\r | |
678 | Updates the Stack HOB passed to DXE phase.\r | |
679 | \r | |
680 | This function traverses the whole HOB list and update the stack HOB to\r | |
681 | reflect the real stack that is used by DXE core.\r | |
682 | \r | |
683 | @param BaseAddress The lower address of stack used by DxeCore.\r | |
684 | @param Length The length of stack used by DxeCore.\r | |
685 | \r | |
686 | **/\r | |
687 | VOID\r | |
688 | UpdateStackHob (\r | |
689 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
690 | IN UINT64 Length\r | |
691 | )\r | |
692 | {\r | |
693 | EFI_PEI_HOB_POINTERS Hob;\r | |
694 | \r | |
695 | Hob.Raw = GetHobList ();\r | |
696 | while ((Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw)) != NULL) {\r | |
697 | if (CompareGuid (&gEfiHobMemoryAllocStackGuid, &(Hob.MemoryAllocationStack->AllocDescriptor.Name))) {\r | |
698 | //\r | |
699 | // Build a new memory allocation HOB with old stack info with EfiConventionalMemory type\r | |
700 | // to be reclaimed by DXE core.\r | |
701 | //\r | |
702 | BuildMemoryAllocationHob (\r | |
703 | Hob.MemoryAllocationStack->AllocDescriptor.MemoryBaseAddress,\r | |
704 | Hob.MemoryAllocationStack->AllocDescriptor.MemoryLength,\r | |
705 | EfiConventionalMemory\r | |
706 | );\r | |
707 | //\r | |
708 | // Update the BSP Stack Hob to reflect the new stack info.\r | |
709 | //\r | |
710 | Hob.MemoryAllocationStack->AllocDescriptor.MemoryBaseAddress = BaseAddress;\r | |
711 | Hob.MemoryAllocationStack->AllocDescriptor.MemoryLength = Length;\r | |
712 | break;\r | |
713 | }\r | |
714 | Hob.Raw = GET_NEXT_HOB (Hob);\r | |
715 | }\r | |
716 | }\r |