]>
Commit | Line | Data |
---|---|---|
1e57a462 | 1 | /** @file\r |
2 | Implementation of the 6 PEI Ffs (FV) APIs in library form.\r | |
3402aac7 | 3 | \r |
1e57a462 | 4 | This code only knows about a FV if it has a EFI_HOB_TYPE_FV entry in the HOB list\r |
5 | \r | |
6 | Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
3402aac7 | 7 | \r |
1e57a462 | 8 | This program and the accompanying materials\r |
9 | are licensed and made available under the terms and conditions of the BSD License\r | |
10 | which accompanies this distribution. The full text of the license may be found at\r | |
11 | http://opensource.org/licenses/bsd-license.php\r | |
12 | \r | |
13 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
14 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
15 | \r | |
16 | **/\r | |
17 | \r | |
18 | #include <PrePi.h>\r | |
19 | #include <Library/ExtractGuidedSectionLib.h>\r | |
20 | \r | |
21 | \r | |
22 | #define GET_OCCUPIED_SIZE(ActualSize, Alignment) \\r | |
23 | (ActualSize) + (((Alignment) - ((ActualSize) & ((Alignment) - 1))) & ((Alignment) - 1))\r | |
24 | \r | |
25 | \r | |
26 | /**\r | |
27 | Returns the highest bit set of the State field\r | |
3402aac7 | 28 | \r |
1e57a462 | 29 | @param ErasePolarity Erase Polarity as defined by EFI_FVB2_ERASE_POLARITY\r |
30 | in the Attributes field.\r | |
31 | @param FfsHeader Pointer to FFS File Header\r | |
3402aac7 | 32 | \r |
1e57a462 | 33 | \r |
34 | @retval the highest bit in the State field\r | |
35 | \r | |
36 | **/\r | |
37 | STATIC\r | |
38 | EFI_FFS_FILE_STATE\r | |
39 | GetFileState(\r | |
40 | IN UINT8 ErasePolarity,\r | |
41 | IN EFI_FFS_FILE_HEADER *FfsHeader\r | |
42 | )\r | |
43 | {\r | |
44 | EFI_FFS_FILE_STATE FileState;\r | |
45 | EFI_FFS_FILE_STATE HighestBit;\r | |
46 | \r | |
47 | FileState = FfsHeader->State;\r | |
48 | \r | |
49 | if (ErasePolarity != 0) {\r | |
50 | FileState = (EFI_FFS_FILE_STATE)~FileState;\r | |
51 | }\r | |
52 | \r | |
53 | HighestBit = 0x80;\r | |
54 | while (HighestBit != 0 && (HighestBit & FileState) == 0) {\r | |
55 | HighestBit >>= 1;\r | |
56 | }\r | |
57 | \r | |
58 | return HighestBit;\r | |
3402aac7 | 59 | }\r |
1e57a462 | 60 | \r |
61 | \r | |
62 | /**\r | |
63 | Calculates the checksum of the header of a file.\r | |
64 | The header is a zero byte checksum, so zero means header is good\r | |
3402aac7 | 65 | \r |
1e57a462 | 66 | @param FfsHeader Pointer to FFS File Header\r |
3402aac7 | 67 | \r |
1e57a462 | 68 | @retval Checksum of the header\r |
69 | \r | |
70 | **/\r | |
71 | STATIC\r | |
72 | UINT8\r | |
73 | CalculateHeaderChecksum (\r | |
74 | IN EFI_FFS_FILE_HEADER *FileHeader\r | |
75 | )\r | |
76 | {\r | |
77 | UINT8 *Ptr;\r | |
78 | UINTN Index;\r | |
79 | UINT8 Sum;\r | |
3402aac7 | 80 | \r |
1e57a462 | 81 | Sum = 0;\r |
82 | Ptr = (UINT8 *)FileHeader;\r | |
83 | \r | |
84 | for (Index = 0; Index < sizeof(EFI_FFS_FILE_HEADER) - 3; Index += 4) {\r | |
85 | Sum = (UINT8)(Sum + Ptr[Index]);\r | |
86 | Sum = (UINT8)(Sum + Ptr[Index+1]);\r | |
87 | Sum = (UINT8)(Sum + Ptr[Index+2]);\r | |
88 | Sum = (UINT8)(Sum + Ptr[Index+3]);\r | |
89 | }\r | |
90 | \r | |
91 | for (; Index < sizeof(EFI_FFS_FILE_HEADER); Index++) {\r | |
92 | Sum = (UINT8)(Sum + Ptr[Index]);\r | |
93 | }\r | |
3402aac7 | 94 | \r |
1e57a462 | 95 | //\r |
3402aac7 | 96 | // State field (since this indicates the different state of file).\r |
1e57a462 | 97 | //\r |
98 | Sum = (UINT8)(Sum - FileHeader->State);\r | |
99 | //\r | |
100 | // Checksum field of the file is not part of the header checksum.\r | |
101 | //\r | |
102 | Sum = (UINT8)(Sum - FileHeader->IntegrityCheck.Checksum.File);\r | |
103 | \r | |
104 | return Sum;\r | |
105 | }\r | |
106 | \r | |
107 | \r | |
108 | /**\r | |
109 | Given a FileHandle return the VolumeHandle\r | |
3402aac7 | 110 | \r |
1e57a462 | 111 | @param FileHandle File handle to look up\r |
112 | @param VolumeHandle Match for FileHandle\r | |
3402aac7 | 113 | \r |
1e57a462 | 114 | @retval TRUE VolumeHandle is valid\r |
115 | \r | |
116 | **/\r | |
117 | STATIC\r | |
118 | BOOLEAN\r | |
119 | EFIAPI\r | |
120 | FileHandleToVolume (\r | |
121 | IN EFI_PEI_FILE_HANDLE FileHandle,\r | |
122 | OUT EFI_PEI_FV_HANDLE *VolumeHandle\r | |
123 | )\r | |
124 | {\r | |
125 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
126 | EFI_PEI_HOB_POINTERS Hob;\r | |
127 | \r | |
128 | Hob.Raw = GetHobList ();\r | |
129 | if (Hob.Raw == NULL) {\r | |
130 | return FALSE;\r | |
131 | }\r | |
3402aac7 | 132 | \r |
1e57a462 | 133 | do {\r |
134 | Hob.Raw = GetNextHob (EFI_HOB_TYPE_FV, Hob.Raw);\r | |
135 | if (Hob.Raw != NULL) {\r | |
136 | FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(Hob.FirmwareVolume->BaseAddress);\r | |
137 | if (((UINT64) (UINTN) FileHandle > (UINT64) (UINTN) FwVolHeader ) && \\r | |
138 | ((UINT64) (UINTN) FileHandle <= ((UINT64) (UINTN) FwVolHeader + FwVolHeader->FvLength - 1))) {\r | |
139 | *VolumeHandle = (EFI_PEI_FV_HANDLE)FwVolHeader;\r | |
140 | return TRUE;\r | |
141 | }\r | |
142 | \r | |
143 | Hob.Raw = GetNextHob (EFI_HOB_TYPE_FV, GET_NEXT_HOB (Hob));\r | |
144 | }\r | |
145 | } while (Hob.Raw != NULL);\r | |
3402aac7 | 146 | \r |
1e57a462 | 147 | return FALSE;\r |
148 | }\r | |
149 | \r | |
150 | \r | |
151 | \r | |
152 | /**\r | |
153 | Given the input file pointer, search for the next matching file in the\r | |
154 | FFS volume as defined by SearchType. The search starts from FileHeader inside\r | |
155 | the Firmware Volume defined by FwVolHeader.\r | |
3402aac7 | 156 | \r |
1e57a462 | 157 | @param FileHandle File handle to look up\r |
158 | @param VolumeHandle Match for FileHandle\r | |
3402aac7 | 159 | \r |
1e57a462 | 160 | \r |
161 | **/\r | |
162 | EFI_STATUS\r | |
163 | FindFileEx (\r | |
164 | IN CONST EFI_PEI_FV_HANDLE FvHandle,\r | |
165 | IN CONST EFI_GUID *FileName, OPTIONAL\r | |
166 | IN EFI_FV_FILETYPE SearchType,\r | |
167 | IN OUT EFI_PEI_FILE_HANDLE *FileHandle\r | |
168 | )\r | |
169 | {\r | |
170 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
171 | EFI_FFS_FILE_HEADER **FileHeader;\r | |
172 | EFI_FFS_FILE_HEADER *FfsFileHeader;\r | |
173 | EFI_FIRMWARE_VOLUME_EXT_HEADER *FwVolExHeaderInfo;\r | |
174 | UINT32 FileLength;\r | |
175 | UINT32 FileOccupiedSize;\r | |
176 | UINT32 FileOffset;\r | |
177 | UINT64 FvLength;\r | |
178 | UINT8 ErasePolarity;\r | |
179 | UINT8 FileState;\r | |
180 | \r | |
181 | FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *)FvHandle;\r | |
182 | FileHeader = (EFI_FFS_FILE_HEADER **)FileHandle;\r | |
183 | \r | |
184 | FvLength = FwVolHeader->FvLength;\r | |
185 | if (FwVolHeader->Attributes & EFI_FVB2_ERASE_POLARITY) {\r | |
186 | ErasePolarity = 1;\r | |
187 | } else {\r | |
188 | ErasePolarity = 0;\r | |
189 | }\r | |
190 | \r | |
191 | //\r | |
192 | // If FileHeader is not specified (NULL) or FileName is not NULL,\r | |
193 | // start with the first file in the firmware volume. Otherwise,\r | |
194 | // start from the FileHeader.\r | |
195 | //\r | |
196 | if ((*FileHeader == NULL) || (FileName != NULL)) {\r | |
197 | FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)FwVolHeader + FwVolHeader->HeaderLength);\r | |
198 | if (FwVolHeader->ExtHeaderOffset != 0) {\r | |
199 | FwVolExHeaderInfo = (EFI_FIRMWARE_VOLUME_EXT_HEADER *)(((UINT8 *)FwVolHeader) + FwVolHeader->ExtHeaderOffset);\r | |
200 | FfsFileHeader = (EFI_FFS_FILE_HEADER *)(((UINT8 *)FwVolExHeaderInfo) + FwVolExHeaderInfo->ExtHeaderSize);\r | |
201 | }\r | |
202 | } else {\r | |
203 | //\r | |
204 | // Length is 24 bits wide so mask upper 8 bits\r | |
205 | // FileLength is adjusted to FileOccupiedSize as it is 8 byte aligned.\r | |
206 | //\r | |
207 | FileLength = *(UINT32 *)(*FileHeader)->Size & 0x00FFFFFF;\r | |
208 | FileOccupiedSize = GET_OCCUPIED_SIZE (FileLength, 8);\r | |
209 | FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)*FileHeader + FileOccupiedSize);\r | |
210 | }\r | |
3402aac7 | 211 | \r |
5a44a766 OM |
212 | // FFS files begin with a header that is aligned on an 8-byte boundary\r |
213 | FfsFileHeader = ALIGN_POINTER (FfsFileHeader, 8);\r | |
214 | \r | |
1e57a462 | 215 | FileOffset = (UINT32) ((UINT8 *)FfsFileHeader - (UINT8 *)FwVolHeader);\r |
216 | ASSERT (FileOffset <= 0xFFFFFFFF);\r | |
217 | \r | |
218 | while (FileOffset < (FvLength - sizeof (EFI_FFS_FILE_HEADER))) {\r | |
219 | //\r | |
3402aac7 | 220 | // Get FileState which is the highest bit of the State\r |
1e57a462 | 221 | //\r |
222 | FileState = GetFileState (ErasePolarity, FfsFileHeader);\r | |
223 | \r | |
224 | switch (FileState) {\r | |
225 | \r | |
226 | case EFI_FILE_HEADER_INVALID:\r | |
227 | FileOffset += sizeof(EFI_FFS_FILE_HEADER);\r | |
228 | FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)FfsFileHeader + sizeof(EFI_FFS_FILE_HEADER));\r | |
229 | break;\r | |
3402aac7 | 230 | \r |
1e57a462 | 231 | case EFI_FILE_DATA_VALID:\r |
232 | case EFI_FILE_MARKED_FOR_UPDATE:\r | |
233 | if (CalculateHeaderChecksum (FfsFileHeader) != 0) {\r | |
234 | ASSERT (FALSE);\r | |
235 | *FileHeader = NULL;\r | |
236 | return EFI_NOT_FOUND;\r | |
237 | }\r | |
238 | \r | |
239 | FileLength = *(UINT32 *)(FfsFileHeader->Size) & 0x00FFFFFF;\r | |
240 | FileOccupiedSize = GET_OCCUPIED_SIZE(FileLength, 8);\r | |
241 | \r | |
242 | if (FileName != NULL) {\r | |
243 | if (CompareGuid (&FfsFileHeader->Name, (EFI_GUID*)FileName)) {\r | |
244 | *FileHeader = FfsFileHeader;\r | |
245 | return EFI_SUCCESS;\r | |
246 | }\r | |
3402aac7 RC |
247 | } else if (((SearchType == FfsFileHeader->Type) || (SearchType == EFI_FV_FILETYPE_ALL)) &&\r |
248 | (FfsFileHeader->Type != EFI_FV_FILETYPE_FFS_PAD)) {\r | |
1e57a462 | 249 | *FileHeader = FfsFileHeader;\r |
250 | return EFI_SUCCESS;\r | |
251 | }\r | |
252 | \r | |
3402aac7 | 253 | FileOffset += FileOccupiedSize;\r |
1e57a462 | 254 | FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)FfsFileHeader + FileOccupiedSize);\r |
255 | break;\r | |
3402aac7 | 256 | \r |
1e57a462 | 257 | case EFI_FILE_DELETED:\r |
258 | FileLength = *(UINT32 *)(FfsFileHeader->Size) & 0x00FFFFFF;\r | |
259 | FileOccupiedSize = GET_OCCUPIED_SIZE(FileLength, 8);\r | |
260 | FileOffset += FileOccupiedSize;\r | |
261 | FfsFileHeader = (EFI_FFS_FILE_HEADER *)((UINT8 *)FfsFileHeader + FileOccupiedSize);\r | |
262 | break;\r | |
263 | \r | |
264 | default:\r | |
265 | *FileHeader = NULL;\r | |
266 | return EFI_NOT_FOUND;\r | |
3402aac7 | 267 | }\r |
1e57a462 | 268 | }\r |
269 | \r | |
3402aac7 | 270 | \r |
1e57a462 | 271 | *FileHeader = NULL;\r |
3402aac7 | 272 | return EFI_NOT_FOUND;\r |
1e57a462 | 273 | }\r |
274 | \r | |
275 | \r | |
276 | /**\r | |
277 | Go through the file to search SectionType section,\r | |
3402aac7 RC |
278 | when meeting an encapsuled section.\r |
279 | \r | |
1e57a462 | 280 | @param SectionType - Filter to find only section of this type.\r |
281 | @param Section - From where to search.\r | |
282 | @param SectionSize - The file size to search.\r | |
283 | @param OutputBuffer - Pointer to the section to search.\r | |
3402aac7 | 284 | \r |
1e57a462 | 285 | @retval EFI_SUCCESS\r |
286 | **/\r | |
287 | EFI_STATUS\r | |
288 | FfsProcessSection (\r | |
289 | IN EFI_SECTION_TYPE SectionType,\r | |
290 | IN EFI_COMMON_SECTION_HEADER *Section,\r | |
291 | IN UINTN SectionSize,\r | |
292 | OUT VOID **OutputBuffer\r | |
293 | )\r | |
294 | {\r | |
295 | EFI_STATUS Status;\r | |
296 | UINT32 SectionLength;\r | |
297 | UINT32 ParsedLength;\r | |
298 | EFI_COMPRESSION_SECTION *CompressionSection;\r | |
c1cdcab9 | 299 | UINT32 DstBufferSize;\r |
1e57a462 | 300 | VOID *ScratchBuffer;\r |
301 | UINT32 ScratchBufferSize;\r | |
302 | VOID *DstBuffer;\r | |
303 | UINT16 SectionAttribute;\r | |
304 | UINT32 AuthenticationStatus;\r | |
305 | \r | |
306 | \r | |
307 | *OutputBuffer = NULL;\r | |
308 | ParsedLength = 0;\r | |
309 | Status = EFI_NOT_FOUND;\r | |
310 | while (ParsedLength < SectionSize) {\r | |
311 | if (Section->Type == SectionType) {\r | |
312 | *OutputBuffer = (VOID *)(Section + 1);\r | |
313 | \r | |
314 | return EFI_SUCCESS;\r | |
315 | } else if ((Section->Type == EFI_SECTION_COMPRESSION) || (Section->Type == EFI_SECTION_GUID_DEFINED)) {\r | |
3402aac7 | 316 | \r |
1e57a462 | 317 | if (Section->Type == EFI_SECTION_COMPRESSION) {\r |
318 | CompressionSection = (EFI_COMPRESSION_SECTION *) Section;\r | |
319 | SectionLength = *(UINT32 *)Section->Size & 0x00FFFFFF;\r | |
3402aac7 | 320 | \r |
1e57a462 | 321 | if (CompressionSection->CompressionType != EFI_STANDARD_COMPRESSION) {\r |
322 | return EFI_UNSUPPORTED;\r | |
323 | }\r | |
324 | \r | |
325 | Status = UefiDecompressGetInfo (\r | |
326 | (UINT8 *) ((EFI_COMPRESSION_SECTION *) Section + 1),\r | |
327 | (UINT32) SectionLength - sizeof (EFI_COMPRESSION_SECTION),\r | |
c1cdcab9 | 328 | &DstBufferSize,\r |
1e57a462 | 329 | &ScratchBufferSize\r |
330 | );\r | |
331 | } else if (Section->Type == EFI_SECTION_GUID_DEFINED) {\r | |
332 | Status = ExtractGuidedSectionGetInfo (\r | |
333 | Section,\r | |
c1cdcab9 | 334 | &DstBufferSize,\r |
1e57a462 | 335 | &ScratchBufferSize,\r |
336 | &SectionAttribute\r | |
337 | );\r | |
338 | }\r | |
3402aac7 | 339 | \r |
1e57a462 | 340 | if (EFI_ERROR (Status)) {\r |
341 | //\r | |
342 | // GetInfo failed\r | |
343 | //\r | |
344 | DEBUG ((EFI_D_ERROR, "Decompress GetInfo Failed - %r\n", Status));\r | |
345 | return EFI_NOT_FOUND;\r | |
346 | }\r | |
347 | //\r | |
348 | // Allocate scratch buffer\r | |
349 | //\r | |
350 | ScratchBuffer = (VOID *)(UINTN)AllocatePages (EFI_SIZE_TO_PAGES (ScratchBufferSize));\r | |
351 | if (ScratchBuffer == NULL) {\r | |
352 | return EFI_OUT_OF_RESOURCES;\r | |
353 | }\r | |
354 | //\r | |
3402aac7 | 355 | // Allocate destination buffer, extra one page for adjustment\r |
1e57a462 | 356 | //\r |
357 | DstBuffer = (VOID *)(UINTN)AllocatePages (EFI_SIZE_TO_PAGES (DstBufferSize) + 1);\r | |
358 | if (DstBuffer == NULL) {\r | |
359 | return EFI_OUT_OF_RESOURCES;\r | |
360 | }\r | |
361 | //\r | |
362 | // DstBuffer still is one section. Adjust DstBuffer offset, skip EFI section header\r | |
363 | // to make section data at page alignment.\r | |
364 | //\r | |
365 | DstBuffer = (UINT8 *)DstBuffer + EFI_PAGE_SIZE - sizeof (EFI_COMMON_SECTION_HEADER);\r | |
366 | //\r | |
367 | // Call decompress function\r | |
368 | //\r | |
369 | if (Section->Type == EFI_SECTION_COMPRESSION) {\r | |
370 | Status = UefiDecompress (\r | |
371 | (CHAR8 *) ((EFI_COMPRESSION_SECTION *) Section + 1),\r | |
372 | DstBuffer,\r | |
373 | ScratchBuffer\r | |
374 | );\r | |
375 | } else if (Section->Type == EFI_SECTION_GUID_DEFINED) {\r | |
376 | Status = ExtractGuidedSectionDecode (\r | |
377 | Section,\r | |
378 | &DstBuffer,\r | |
379 | ScratchBuffer,\r | |
380 | &AuthenticationStatus\r | |
381 | );\r | |
382 | }\r | |
3402aac7 | 383 | \r |
1e57a462 | 384 | if (EFI_ERROR (Status)) {\r |
385 | //\r | |
386 | // Decompress failed\r | |
387 | //\r | |
388 | DEBUG ((EFI_D_ERROR, "Decompress Failed - %r\n", Status));\r | |
389 | return EFI_NOT_FOUND;\r | |
390 | } else {\r | |
391 | return FfsProcessSection (\r | |
3402aac7 RC |
392 | SectionType,\r |
393 | DstBuffer,\r | |
394 | DstBufferSize,\r | |
395 | OutputBuffer\r | |
1e57a462 | 396 | );\r |
3402aac7 | 397 | }\r |
1e57a462 | 398 | }\r |
399 | \r | |
400 | //\r | |
3402aac7 | 401 | // Size is 24 bits wide so mask upper 8 bits.\r |
1e57a462 | 402 | // SectionLength is adjusted it is 4 byte aligned.\r |
403 | // Go to the next section\r | |
404 | //\r | |
405 | SectionLength = *(UINT32 *)Section->Size & 0x00FFFFFF;\r | |
406 | SectionLength = GET_OCCUPIED_SIZE (SectionLength, 4);\r | |
407 | ASSERT (SectionLength != 0);\r | |
408 | ParsedLength += SectionLength;\r | |
409 | Section = (EFI_COMMON_SECTION_HEADER *)((UINT8 *)Section + SectionLength);\r | |
410 | }\r | |
3402aac7 | 411 | \r |
1e57a462 | 412 | return EFI_NOT_FOUND;\r |
413 | }\r | |
414 | \r | |
415 | \r | |
416 | \r | |
417 | /**\r | |
418 | This service enables discovery sections of a given type within a valid FFS file.\r | |
419 | \r | |
420 | @param SearchType The value of the section type to find.\r | |
421 | @param FfsFileHeader A pointer to the file header that contains the set of sections to\r | |
422 | be searched.\r | |
423 | @param SectionData A pointer to the discovered section, if successful.\r | |
424 | \r | |
425 | @retval EFI_SUCCESS The section was found.\r | |
426 | @retval EFI_NOT_FOUND The section was not found.\r | |
427 | \r | |
428 | **/\r | |
429 | EFI_STATUS\r | |
430 | EFIAPI\r | |
431 | FfsFindSectionData (\r | |
432 | IN EFI_SECTION_TYPE SectionType,\r | |
433 | IN EFI_PEI_FILE_HANDLE FileHandle,\r | |
434 | OUT VOID **SectionData\r | |
435 | )\r | |
436 | {\r | |
437 | EFI_FFS_FILE_HEADER *FfsFileHeader;\r | |
438 | UINT32 FileSize;\r | |
439 | EFI_COMMON_SECTION_HEADER *Section;\r | |
440 | \r | |
441 | FfsFileHeader = (EFI_FFS_FILE_HEADER *)(FileHandle);\r | |
442 | \r | |
443 | //\r | |
3402aac7 | 444 | // Size is 24 bits wide so mask upper 8 bits.\r |
1e57a462 | 445 | // Does not include FfsFileHeader header size\r |
446 | // FileSize is adjusted to FileOccupiedSize as it is 8 byte aligned.\r | |
447 | //\r | |
448 | Section = (EFI_COMMON_SECTION_HEADER *)(FfsFileHeader + 1);\r | |
449 | FileSize = *(UINT32 *)(FfsFileHeader->Size) & 0x00FFFFFF;\r | |
450 | FileSize -= sizeof (EFI_FFS_FILE_HEADER);\r | |
451 | \r | |
452 | return FfsProcessSection (\r | |
3402aac7 RC |
453 | SectionType,\r |
454 | Section,\r | |
455 | FileSize,\r | |
1e57a462 | 456 | SectionData\r |
457 | );\r | |
458 | }\r | |
459 | \r | |
460 | \r | |
461 | \r | |
462 | \r | |
463 | \r | |
464 | \r | |
465 | /**\r | |
466 | This service enables discovery of additional firmware files.\r | |
467 | \r | |
468 | @param SearchType A filter to find files only of this type.\r | |
469 | @param FwVolHeader Pointer to the firmware volume header of the volume to search.\r | |
470 | This parameter must point to a valid FFS volume.\r | |
471 | @param FileHeader Pointer to the current file from which to begin searching.\r | |
472 | \r | |
473 | @retval EFI_SUCCESS The file was found.\r | |
474 | @retval EFI_NOT_FOUND The file was not found.\r | |
475 | @retval EFI_NOT_FOUND The header checksum was not zero.\r | |
476 | \r | |
477 | **/\r | |
478 | EFI_STATUS\r | |
479 | EFIAPI\r | |
480 | FfsFindNextFile (\r | |
481 | IN UINT8 SearchType,\r | |
482 | IN EFI_PEI_FV_HANDLE VolumeHandle,\r | |
483 | IN OUT EFI_PEI_FILE_HANDLE *FileHandle\r | |
484 | )\r | |
485 | {\r | |
486 | return FindFileEx (VolumeHandle, NULL, SearchType, FileHandle);\r | |
487 | }\r | |
488 | \r | |
489 | \r | |
490 | /**\r | |
491 | This service enables discovery of additional firmware volumes.\r | |
492 | \r | |
493 | @param Instance This instance of the firmware volume to find. The value 0 is the\r | |
494 | Boot Firmware Volume (BFV).\r | |
495 | @param FwVolHeader Pointer to the firmware volume header of the volume to return.\r | |
496 | \r | |
497 | @retval EFI_SUCCESS The volume was found.\r | |
498 | @retval EFI_NOT_FOUND The volume was not found.\r | |
499 | \r | |
500 | **/\r | |
501 | EFI_STATUS\r | |
502 | EFIAPI\r | |
503 | FfsFindNextVolume (\r | |
504 | IN UINTN Instance,\r | |
505 | IN OUT EFI_PEI_FV_HANDLE *VolumeHandle\r | |
506 | )\r | |
507 | {\r | |
508 | EFI_PEI_HOB_POINTERS Hob;\r | |
3402aac7 | 509 | \r |
1e57a462 | 510 | \r |
511 | Hob.Raw = GetHobList ();\r | |
512 | if (Hob.Raw == NULL) {\r | |
513 | return EFI_NOT_FOUND;\r | |
514 | }\r | |
3402aac7 | 515 | \r |
1e57a462 | 516 | do {\r |
517 | Hob.Raw = GetNextHob (EFI_HOB_TYPE_FV, Hob.Raw);\r | |
518 | if (Hob.Raw != NULL) {\r | |
519 | if (Instance-- == 0) {\r | |
520 | *VolumeHandle = (EFI_PEI_FV_HANDLE)(UINTN)(Hob.FirmwareVolume->BaseAddress);\r | |
521 | return EFI_SUCCESS;\r | |
522 | }\r | |
523 | \r | |
524 | Hob.Raw = GetNextHob (EFI_HOB_TYPE_FV, GET_NEXT_HOB (Hob));\r | |
525 | }\r | |
526 | } while (Hob.Raw != NULL);\r | |
3402aac7 | 527 | \r |
1e57a462 | 528 | return EFI_NOT_FOUND;\r |
529 | \r | |
530 | }\r | |
531 | \r | |
532 | \r | |
533 | /**\r | |
534 | Find a file in the volume by name\r | |
3402aac7 | 535 | \r |
1e57a462 | 536 | @param FileName A pointer to the name of the file to\r |
537 | find within the firmware volume.\r | |
538 | \r | |
539 | @param VolumeHandle The firmware volume to search FileHandle\r | |
540 | Upon exit, points to the found file's\r | |
541 | handle or NULL if it could not be found.\r | |
542 | \r | |
543 | @retval EFI_SUCCESS File was found.\r | |
544 | \r | |
545 | @retval EFI_NOT_FOUND File was not found.\r | |
546 | \r | |
547 | @retval EFI_INVALID_PARAMETER VolumeHandle or FileHandle or\r | |
548 | FileName was NULL.\r | |
549 | \r | |
550 | **/\r | |
551 | EFI_STATUS\r | |
3402aac7 | 552 | EFIAPI\r |
1e57a462 | 553 | FfsFindFileByName (\r |
554 | IN CONST EFI_GUID *FileName,\r | |
555 | IN EFI_PEI_FV_HANDLE VolumeHandle,\r | |
556 | OUT EFI_PEI_FILE_HANDLE *FileHandle\r | |
557 | )\r | |
558 | {\r | |
559 | EFI_STATUS Status;\r | |
560 | if ((VolumeHandle == NULL) || (FileName == NULL) || (FileHandle == NULL)) {\r | |
561 | return EFI_INVALID_PARAMETER;\r | |
562 | }\r | |
563 | Status = FindFileEx (VolumeHandle, FileName, 0, FileHandle);\r | |
564 | if (Status == EFI_NOT_FOUND) {\r | |
565 | *FileHandle = NULL;\r | |
566 | }\r | |
567 | return Status;\r | |
568 | }\r | |
569 | \r | |
570 | \r | |
571 | \r | |
572 | \r | |
573 | /**\r | |
574 | Get information about the file by name.\r | |
575 | \r | |
576 | @param FileHandle Handle of the file.\r | |
577 | \r | |
578 | @param FileInfo Upon exit, points to the file's\r | |
579 | information.\r | |
580 | \r | |
581 | @retval EFI_SUCCESS File information returned.\r | |
3402aac7 | 582 | \r |
1e57a462 | 583 | @retval EFI_INVALID_PARAMETER If FileHandle does not\r |
584 | represent a valid file.\r | |
3402aac7 | 585 | \r |
1e57a462 | 586 | @retval EFI_INVALID_PARAMETER If FileInfo is NULL.\r |
3402aac7 | 587 | \r |
1e57a462 | 588 | **/\r |
589 | EFI_STATUS\r | |
3402aac7 | 590 | EFIAPI\r |
1e57a462 | 591 | FfsGetFileInfo (\r |
592 | IN EFI_PEI_FILE_HANDLE FileHandle,\r | |
593 | OUT EFI_FV_FILE_INFO *FileInfo\r | |
594 | )\r | |
595 | {\r | |
596 | UINT8 FileState;\r | |
597 | UINT8 ErasePolarity;\r | |
598 | EFI_FFS_FILE_HEADER *FileHeader;\r | |
599 | EFI_PEI_FV_HANDLE VolumeHandle;\r | |
600 | \r | |
601 | if ((FileHandle == NULL) || (FileInfo == NULL)) {\r | |
602 | return EFI_INVALID_PARAMETER;\r | |
603 | }\r | |
604 | \r | |
605 | VolumeHandle = 0;\r | |
606 | //\r | |
607 | // Retrieve the FirmwareVolume which the file resides in.\r | |
608 | //\r | |
609 | if (!FileHandleToVolume(FileHandle, &VolumeHandle)) {\r | |
610 | return EFI_INVALID_PARAMETER;\r | |
611 | }\r | |
612 | \r | |
613 | if (((EFI_FIRMWARE_VOLUME_HEADER*)VolumeHandle)->Attributes & EFI_FVB2_ERASE_POLARITY) {\r | |
614 | ErasePolarity = 1;\r | |
615 | } else {\r | |
616 | ErasePolarity = 0;\r | |
617 | }\r | |
618 | \r | |
619 | //\r | |
3402aac7 | 620 | // Get FileState which is the highest bit of the State\r |
1e57a462 | 621 | //\r |
622 | FileState = GetFileState (ErasePolarity, (EFI_FFS_FILE_HEADER*)FileHandle);\r | |
623 | \r | |
624 | switch (FileState) {\r | |
625 | case EFI_FILE_DATA_VALID:\r | |
626 | case EFI_FILE_MARKED_FOR_UPDATE:\r | |
3402aac7 | 627 | break;\r |
1e57a462 | 628 | default:\r |
629 | return EFI_INVALID_PARAMETER;\r | |
630 | }\r | |
631 | \r | |
632 | FileHeader = (EFI_FFS_FILE_HEADER *)FileHandle;\r | |
633 | CopyMem (&FileInfo->FileName, &FileHeader->Name, sizeof(EFI_GUID));\r | |
634 | FileInfo->FileType = FileHeader->Type;\r | |
635 | FileInfo->FileAttributes = FileHeader->Attributes;\r | |
636 | FileInfo->BufferSize = ((*(UINT32 *)FileHeader->Size) & 0x00FFFFFF) - sizeof (EFI_FFS_FILE_HEADER);\r | |
637 | FileInfo->Buffer = (FileHeader + 1);\r | |
638 | return EFI_SUCCESS;\r | |
639 | }\r | |
640 | \r | |
641 | \r | |
642 | /**\r | |
643 | Get Information about the volume by name\r | |
644 | \r | |
645 | @param VolumeHandle Handle of the volume.\r | |
646 | \r | |
647 | @param VolumeInfo Upon exit, points to the volume's\r | |
648 | information.\r | |
649 | \r | |
650 | @retval EFI_SUCCESS File information returned.\r | |
3402aac7 | 651 | \r |
1e57a462 | 652 | @retval EFI_INVALID_PARAMETER If FileHandle does not\r |
653 | represent a valid file.\r | |
3402aac7 | 654 | \r |
1e57a462 | 655 | @retval EFI_INVALID_PARAMETER If FileInfo is NULL.\r |
656 | \r | |
657 | **/\r | |
658 | EFI_STATUS\r | |
3402aac7 | 659 | EFIAPI\r |
1e57a462 | 660 | FfsGetVolumeInfo (\r |
661 | IN EFI_PEI_FV_HANDLE VolumeHandle,\r | |
662 | OUT EFI_FV_INFO *VolumeInfo\r | |
663 | )\r | |
664 | {\r | |
665 | EFI_FIRMWARE_VOLUME_HEADER FwVolHeader;\r | |
666 | EFI_FIRMWARE_VOLUME_EXT_HEADER *FwVolExHeaderInfo;\r | |
667 | \r | |
668 | if (VolumeInfo == NULL) {\r | |
669 | return EFI_INVALID_PARAMETER;\r | |
670 | }\r | |
3402aac7 | 671 | \r |
1e57a462 | 672 | //\r |
3402aac7 RC |
673 | // VolumeHandle may not align at 8 byte,\r |
674 | // but FvLength is UINT64 type, which requires FvHeader align at least 8 byte.\r | |
1e57a462 | 675 | // So, Copy FvHeader into the local FvHeader structure.\r |
676 | //\r | |
677 | CopyMem (&FwVolHeader, VolumeHandle, sizeof (EFI_FIRMWARE_VOLUME_HEADER));\r | |
678 | //\r | |
679 | // Check Fv Image Signature\r | |
680 | //\r | |
681 | if (FwVolHeader.Signature != EFI_FVH_SIGNATURE) {\r | |
682 | return EFI_INVALID_PARAMETER;\r | |
683 | }\r | |
684 | VolumeInfo->FvAttributes = FwVolHeader.Attributes;\r | |
685 | VolumeInfo->FvStart = (VOID *) VolumeHandle;\r | |
686 | VolumeInfo->FvSize = FwVolHeader.FvLength;\r | |
687 | CopyMem (&VolumeInfo->FvFormat, &FwVolHeader.FileSystemGuid, sizeof(EFI_GUID));\r | |
688 | \r | |
689 | if (FwVolHeader.ExtHeaderOffset != 0) {\r | |
690 | FwVolExHeaderInfo = (EFI_FIRMWARE_VOLUME_EXT_HEADER*)(((UINT8 *)VolumeHandle) + FwVolHeader.ExtHeaderOffset);\r | |
691 | CopyMem (&VolumeInfo->FvName, &FwVolExHeaderInfo->FvName, sizeof(EFI_GUID));\r | |
692 | }\r | |
693 | return EFI_SUCCESS;\r | |
694 | }\r | |
695 | \r | |
696 | \r | |
697 | \r | |
698 | /**\r | |
699 | Search through every FV until you find a file of type FileType\r | |
700 | \r | |
91c38d4e RC |
701 | @param FileType File handle of a Fv type file.\r |
702 | @param Volumehandle On succes Volume Handle of the match\r | |
703 | @param FileHandle On success File Handle of the match\r | |
3402aac7 | 704 | \r |
91c38d4e RC |
705 | @retval EFI_NOT_FOUND FV image can't be found.\r |
706 | @retval EFI_SUCCESS Successfully found FileType\r | |
1e57a462 | 707 | \r |
708 | **/\r | |
709 | EFI_STATUS\r | |
710 | EFIAPI\r | |
711 | FfsAnyFvFindFirstFile (\r | |
712 | IN EFI_FV_FILETYPE FileType,\r | |
713 | OUT EFI_PEI_FV_HANDLE *VolumeHandle,\r | |
714 | OUT EFI_PEI_FILE_HANDLE *FileHandle\r | |
715 | )\r | |
716 | {\r | |
717 | EFI_STATUS Status;\r | |
718 | UINTN Instance;\r | |
719 | \r | |
720 | //\r | |
721 | // Search every FV for the DXE Core\r | |
722 | //\r | |
723 | Instance = 0;\r | |
724 | *FileHandle = NULL;\r | |
725 | \r | |
726 | while (1)\r | |
727 | {\r | |
728 | Status = FfsFindNextVolume (Instance++, VolumeHandle);\r | |
729 | if (EFI_ERROR (Status))\r | |
730 | {\r | |
731 | break;\r | |
732 | }\r | |
733 | \r | |
734 | Status = FfsFindNextFile (FileType, *VolumeHandle, FileHandle);\r | |
735 | if (!EFI_ERROR (Status))\r | |
736 | {\r | |
737 | break;\r | |
738 | }\r | |
739 | }\r | |
3402aac7 | 740 | \r |
1e57a462 | 741 | return Status;\r |
742 | }\r | |
743 | \r | |
744 | \r | |
745 | \r | |
746 | /**\r | |
747 | Get Fv image from the FV type file, then add FV & FV2 Hob.\r | |
748 | \r | |
91c38d4e | 749 | @param FileHandle File handle of a Fv type file.\r |
1e57a462 | 750 | \r |
751 | \r | |
91c38d4e RC |
752 | @retval EFI_NOT_FOUND FV image can't be found.\r |
753 | @retval EFI_SUCCESS Successfully to process it.\r | |
1e57a462 | 754 | \r |
755 | **/\r | |
756 | EFI_STATUS\r | |
757 | EFIAPI\r | |
758 | FfsProcessFvFile (\r | |
759 | IN EFI_PEI_FILE_HANDLE FvFileHandle\r | |
760 | )\r | |
761 | {\r | |
762 | EFI_STATUS Status;\r | |
763 | EFI_PEI_FV_HANDLE FvImageHandle;\r | |
764 | EFI_FV_INFO FvImageInfo;\r | |
765 | UINT32 FvAlignment;\r | |
766 | VOID *FvBuffer;\r | |
767 | EFI_PEI_HOB_POINTERS HobFv2;\r | |
768 | \r | |
769 | FvBuffer = NULL;\r | |
770 | \r | |
771 | \r | |
772 | //\r | |
773 | // Check if this EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE file has already\r | |
774 | // been extracted.\r | |
775 | //\r | |
776 | HobFv2.Raw = GetHobList ();\r | |
777 | while ((HobFv2.Raw = GetNextHob (EFI_HOB_TYPE_FV2, HobFv2.Raw)) != NULL) {\r | |
778 | if (CompareGuid (&(((EFI_FFS_FILE_HEADER *)FvFileHandle)->Name), &HobFv2.FirmwareVolume2->FileName)) {\r | |
779 | //\r | |
780 | // this FILE has been dispatched, it will not be dispatched again.\r | |
781 | //\r | |
782 | return EFI_SUCCESS;\r | |
783 | }\r | |
784 | HobFv2.Raw = GET_NEXT_HOB (HobFv2);\r | |
785 | }\r | |
786 | \r | |
787 | //\r | |
788 | // Find FvImage in FvFile\r | |
789 | //\r | |
790 | Status = FfsFindSectionData (EFI_SECTION_FIRMWARE_VOLUME_IMAGE, FvFileHandle, (VOID **)&FvImageHandle);\r | |
791 | if (EFI_ERROR (Status)) {\r | |
792 | return Status;\r | |
793 | }\r | |
3402aac7 | 794 | \r |
1e57a462 | 795 | //\r |
796 | // Collect FvImage Info.\r | |
797 | //\r | |
798 | ZeroMem (&FvImageInfo, sizeof (FvImageInfo));\r | |
799 | Status = FfsGetVolumeInfo (FvImageHandle, &FvImageInfo);\r | |
800 | ASSERT_EFI_ERROR (Status);\r | |
3402aac7 | 801 | \r |
1e57a462 | 802 | //\r |
803 | // FvAlignment must be more than 8 bytes required by FvHeader structure.\r | |
804 | //\r | |
805 | FvAlignment = 1 << ((FvImageInfo.FvAttributes & EFI_FVB2_ALIGNMENT) >> 16);\r | |
806 | if (FvAlignment < 8) {\r | |
807 | FvAlignment = 8;\r | |
808 | }\r | |
3402aac7 | 809 | \r |
1e57a462 | 810 | //\r |
811 | // Check FvImage\r | |
812 | //\r | |
813 | if ((UINTN) FvImageInfo.FvStart % FvAlignment != 0) {\r | |
814 | FvBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES ((UINT32) FvImageInfo.FvSize), FvAlignment);\r | |
815 | if (FvBuffer == NULL) {\r | |
816 | return EFI_OUT_OF_RESOURCES;\r | |
817 | }\r | |
818 | CopyMem (FvBuffer, FvImageInfo.FvStart, (UINTN) FvImageInfo.FvSize);\r | |
819 | //\r | |
820 | // Update FvImageInfo after reload FvImage to new aligned memory\r | |
821 | //\r | |
822 | FfsGetVolumeInfo ((EFI_PEI_FV_HANDLE) FvBuffer, &FvImageInfo);\r | |
823 | }\r | |
824 | \r | |
825 | \r | |
826 | //\r | |
827 | // Inform HOB consumer phase, i.e. DXE core, the existance of this FV\r | |
828 | //\r | |
829 | BuildFvHob ((EFI_PHYSICAL_ADDRESS) (UINTN) FvImageInfo.FvStart, FvImageInfo.FvSize);\r | |
3402aac7 | 830 | \r |
1e57a462 | 831 | //\r |
832 | // Makes the encapsulated volume show up in DXE phase to skip processing of\r | |
833 | // encapsulated file again.\r | |
834 | //\r | |
835 | BuildFv2Hob (\r | |
836 | (EFI_PHYSICAL_ADDRESS) (UINTN) FvImageInfo.FvStart,\r | |
837 | FvImageInfo.FvSize,\r | |
838 | &FvImageInfo.FvName,\r | |
839 | &(((EFI_FFS_FILE_HEADER *)FvFileHandle)->Name)\r | |
840 | );\r | |
841 | \r | |
842 | return EFI_SUCCESS;\r | |
843 | }\r | |
844 | \r | |
845 | \r |