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162ed594 | 1 | /** @file\r |
2 | Firmware Volume Block protocol. Consumes FV hobs and creates\r | |
797a9d67 | 3 | appropriate block protocols.\r |
28a00297 | 4 | \r |
797a9d67 | 5 | Also consumes NT_NON_MM_FV envinronment variable and produces appropriate\r |
6 | block protocols fro them also... (this is TBD)\r | |
23c98c94 | 7 | \r |
8 | Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r | |
9 | All rights reserved. This program and the accompanying materials\r | |
10 | are licensed and made available under the terms and conditions of the BSD License\r | |
11 | which accompanies this distribution. The full text of the license may be found at\r | |
12 | http://opensource.org/licenses/bsd-license.php\r | |
13 | \r | |
14 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
15 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
28a00297 | 16 | \r |
797a9d67 | 17 | **/\r |
28a00297 | 18 | \r |
19 | #include <DxeMain.h>\r | |
20 | \r | |
21 | \r | |
22 | EFI_FW_VOL_BLOCK_DEVICE mFwVolBlock = {\r | |
23 | FVB_DEVICE_SIGNATURE,\r | |
24 | NULL,\r | |
25 | {\r | |
26 | {\r | |
27 | {\r | |
28 | HARDWARE_DEVICE_PATH,\r | |
29 | HW_MEMMAP_DP,\r | |
30 | { (UINT8)(sizeof (MEMMAP_DEVICE_PATH)), (UINT8)(sizeof (MEMMAP_DEVICE_PATH) >> 8) }\r | |
31 | },\r | |
32 | EfiMemoryMappedIO,\r | |
33 | (EFI_PHYSICAL_ADDRESS)0,\r | |
34 | (EFI_PHYSICAL_ADDRESS)0,\r | |
35 | },\r | |
36 | {\r | |
37 | END_DEVICE_PATH_TYPE,\r | |
38 | END_ENTIRE_DEVICE_PATH_SUBTYPE,\r | |
39 | { END_DEVICE_PATH_LENGTH, 0 } \r | |
40 | },\r | |
41 | },\r | |
42 | {\r | |
43 | FwVolBlockGetAttributes,\r | |
44 | (EFI_FVB_SET_ATTRIBUTES)FwVolBlockSetAttributes,\r | |
45 | FwVolBlockGetPhysicalAddress,\r | |
46 | FwVolBlockGetBlockSize,\r | |
47 | FwVolBlockReadBlock,\r | |
48 | (EFI_FVB_WRITE)FwVolBlockWriteBlock,\r | |
49 | (EFI_FVB_ERASE_BLOCKS)FwVolBlockEraseBlock,\r | |
50 | NULL \r | |
51 | },\r | |
52 | 0,\r | |
53 | NULL,\r | |
54 | 0,\r | |
55 | 0\r | |
56 | };\r | |
57 | \r | |
58 | \r | |
59 | \r | |
60 | \r | |
162ed594 | 61 | \r |
62 | /**\r | |
63 | Retrieves Volume attributes. No polarity translations are done.\r | |
64 | \r | |
65 | @param This Calling context \r | |
66 | @param Attributes output buffer which contains attributes \r | |
67 | \r | |
68 | @retval EFI_SUCCESS The firmware volume attributes were returned.\r | |
69 | \r | |
70 | **/\r | |
28a00297 | 71 | EFI_STATUS\r |
72 | EFIAPI\r | |
73 | FwVolBlockGetAttributes (\r | |
74 | IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,\r | |
75 | OUT EFI_FVB_ATTRIBUTES *Attributes\r | |
76 | )\r | |
28a00297 | 77 | {\r |
78 | EFI_FW_VOL_BLOCK_DEVICE *FvbDevice;\r | |
79 | \r | |
80 | FvbDevice = FVB_DEVICE_FROM_THIS (This);\r | |
81 | \r | |
82 | //\r | |
83 | // Since we are read only, it's safe to get attributes data from our in-memory copy.\r | |
84 | //\r | |
85 | *Attributes = FvbDevice->FvbAttributes;\r | |
86 | \r | |
87 | return EFI_SUCCESS;\r | |
88 | }\r | |
89 | \r | |
90 | \r | |
162ed594 | 91 | \r |
92 | /**\r | |
93 | Modifies the current settings of the firmware volume according to the input parameter.\r | |
94 | \r | |
95 | @param This Calling context \r | |
96 | @param Attributes input buffer which contains attributes \r | |
97 | \r | |
98 | @retval EFI_SUCCESS The firmware volume attributes were returned. \r | |
99 | @retval EFI_INVALID_PARAMETER The attributes requested are in conflict with \r | |
100 | the capabilities as declared in the firmware \r | |
101 | volume header. \r | |
102 | @retval EFI_UNSUPPORTED Not supported.\r | |
103 | \r | |
104 | **/\r | |
28a00297 | 105 | EFI_STATUS\r |
106 | EFIAPI\r | |
107 | FwVolBlockSetAttributes (\r | |
108 | IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,\r | |
109 | IN CONST EFI_FVB_ATTRIBUTES *Attributes\r | |
110 | )\r | |
28a00297 | 111 | {\r |
112 | return EFI_UNSUPPORTED;\r | |
113 | }\r | |
114 | \r | |
115 | \r | |
162ed594 | 116 | \r |
117 | /**\r | |
118 | The EraseBlock() function erases one or more blocks as denoted by the\r | |
119 | variable argument list. The entire parameter list of blocks must be verified\r | |
120 | prior to erasing any blocks. If a block is requested that does not exist\r | |
121 | within the associated firmware volume (it has a larger index than the last\r | |
122 | block of the firmware volume), the EraseBlock() function must return\r | |
123 | EFI_INVALID_PARAMETER without modifying the contents of the firmware volume.\r | |
124 | \r | |
125 | @param This Calling context \r | |
126 | @param ... Starting LBA followed by Number of Lba to erase. \r | |
127 | a -1 to terminate the list. \r | |
128 | \r | |
129 | @retval EFI_SUCCESS The erase request was successfully completed. \r | |
130 | @retval EFI_ACCESS_DENIED The firmware volume is in the WriteDisabled \r | |
131 | state. \r | |
132 | @retval EFI_DEVICE_ERROR The block device is not functioning correctly \r | |
133 | and could not be written. The firmware device \r | |
134 | may have been partially erased. \r | |
135 | @retval EFI_INVALID_PARAMETER One or more of the LBAs listed in the variable \r | |
136 | argument list do \r | |
137 | @retval EFI_UNSUPPORTED Not supported.\r | |
138 | \r | |
139 | **/\r | |
28a00297 | 140 | EFI_STATUS\r |
141 | EFIAPI\r | |
142 | FwVolBlockEraseBlock (\r | |
143 | IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,\r | |
144 | ...\r | |
145 | )\r | |
28a00297 | 146 | {\r |
147 | return EFI_UNSUPPORTED;\r | |
148 | }\r | |
149 | \r | |
150 | \r | |
162ed594 | 151 | \r |
152 | /**\r | |
153 | Read the specified number of bytes from the block to the input buffer.\r | |
154 | \r | |
155 | @param This Indicates the calling context. \r | |
156 | @param Lba The starting logical block index to read. \r | |
157 | @param Offset Offset into the block at which to begin reading. \r | |
158 | @param NumBytes Pointer to a UINT32. At entry, *NumBytes \r | |
159 | contains the total size of the buffer. At exit, \r | |
160 | *NumBytes contains the total number of bytes \r | |
161 | actually read. \r | |
162 | @param Buffer Pinter to a caller-allocated buffer that \r | |
163 | contains the destine for the read. \r | |
164 | \r | |
165 | @retval EFI_SUCCESS The firmware volume was read successfully. \r | |
166 | @retval EFI_BAD_BUFFER_SIZE The read was attempted across an LBA boundary. \r | |
167 | @retval EFI_ACCESS_DENIED Access denied. \r | |
168 | @retval EFI_DEVICE_ERROR The block device is malfunctioning and could not \r | |
169 | be read.\r | |
170 | \r | |
171 | **/\r | |
28a00297 | 172 | EFI_STATUS\r |
173 | EFIAPI\r | |
174 | FwVolBlockReadBlock (\r | |
175 | IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,\r | |
176 | IN CONST EFI_LBA Lba,\r | |
177 | IN CONST UINTN Offset,\r | |
178 | IN OUT UINTN *NumBytes,\r | |
179 | IN OUT UINT8 *Buffer\r | |
180 | )\r | |
28a00297 | 181 | {\r |
182 | EFI_FW_VOL_BLOCK_DEVICE *FvbDevice;\r | |
183 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
184 | UINT8 *LbaOffset;\r | |
185 | UINTN LbaStart;\r | |
186 | UINTN NumOfBytesRead;\r | |
187 | UINTN LbaIndex;\r | |
188 | \r | |
189 | FvbDevice = FVB_DEVICE_FROM_THIS (This);\r | |
190 | \r | |
191 | //\r | |
192 | // Check if This FW can be read\r | |
193 | //\r | |
797a9d67 | 194 | if ((FvbDevice->FvbAttributes & EFI_FVB2_READ_STATUS) == 0) {\r |
28a00297 | 195 | return EFI_ACCESS_DENIED;\r |
196 | }\r | |
197 | \r | |
198 | LbaIndex = (UINTN)Lba;\r | |
199 | if (LbaIndex >= FvbDevice->NumBlocks) {\r | |
200 | //\r | |
201 | // Invalid Lba, read nothing.\r | |
202 | //\r | |
203 | *NumBytes = 0;\r | |
204 | return EFI_BAD_BUFFER_SIZE;\r | |
205 | }\r | |
206 | \r | |
207 | if (Offset > FvbDevice->LbaCache[LbaIndex].Length) {\r | |
208 | //\r | |
209 | // all exceed boundry, read nothing.\r | |
210 | //\r | |
211 | *NumBytes = 0;\r | |
212 | return EFI_BAD_BUFFER_SIZE;\r | |
213 | }\r | |
214 | \r | |
215 | NumOfBytesRead = *NumBytes;\r | |
216 | if (Offset + NumOfBytesRead > FvbDevice->LbaCache[LbaIndex].Length) {\r | |
217 | //\r | |
218 | // partial exceed boundry, read data from current postion to end.\r | |
219 | //\r | |
220 | NumOfBytesRead = FvbDevice->LbaCache[LbaIndex].Length - Offset;\r | |
221 | }\r | |
222 | \r | |
223 | LbaStart = FvbDevice->LbaCache[LbaIndex].Base;\r | |
224 | FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *)((UINTN)FvbDevice->BaseAddress);\r | |
225 | LbaOffset = (UINT8 *)FwVolHeader + LbaStart + Offset;\r | |
226 | \r | |
227 | //\r | |
228 | // Perform read operation\r | |
229 | //\r | |
230 | CopyMem (Buffer, LbaOffset, NumOfBytesRead);\r | |
231 | \r | |
232 | if (NumOfBytesRead == *NumBytes) {\r | |
233 | return EFI_SUCCESS;\r | |
234 | }\r | |
235 | \r | |
236 | *NumBytes = NumOfBytesRead;\r | |
237 | return EFI_BAD_BUFFER_SIZE;\r | |
238 | }\r | |
239 | \r | |
240 | \r | |
162ed594 | 241 | \r |
242 | /**\r | |
243 | Writes the specified number of bytes from the input buffer to the block.\r | |
244 | \r | |
245 | @param This Indicates the calling context. \r | |
246 | @param Lba The starting logical block index to write to. \r | |
247 | @param Offset Offset into the block at which to begin writing. \r | |
248 | @param NumBytes Pointer to a UINT32. At entry, *NumBytes \r | |
249 | contains the total size of the buffer. At exit, \r | |
250 | *NumBytes contains the total number of bytes \r | |
251 | actually written. \r | |
252 | @param Buffer Pinter to a caller-allocated buffer that \r | |
253 | contains the source for the write. \r | |
254 | \r | |
255 | @retval EFI_SUCCESS The firmware volume was written successfully. \r | |
256 | @retval EFI_BAD_BUFFER_SIZE The write was attempted across an LBA boundary. \r | |
257 | On output, NumBytes contains the total number of \r | |
258 | bytes actually written. \r | |
259 | @retval EFI_ACCESS_DENIED The firmware volume is in the WriteDisabled \r | |
260 | state. \r | |
261 | @retval EFI_DEVICE_ERROR The block device is malfunctioning and could not \r | |
262 | be written. \r | |
263 | @retval EFI_UNSUPPORTED Not supported.\r | |
264 | \r | |
265 | **/\r | |
28a00297 | 266 | EFI_STATUS\r |
267 | EFIAPI\r | |
268 | FwVolBlockWriteBlock (\r | |
269 | IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,\r | |
270 | IN EFI_LBA Lba,\r | |
271 | IN UINTN Offset,\r | |
272 | IN OUT UINTN *NumBytes,\r | |
273 | IN UINT8 *Buffer\r | |
274 | )\r | |
28a00297 | 275 | {\r |
276 | return EFI_UNSUPPORTED;\r | |
277 | }\r | |
278 | \r | |
279 | \r | |
162ed594 | 280 | \r |
281 | /**\r | |
282 | Get Fvb's base address.\r | |
283 | \r | |
284 | @param This Indicates the calling context. \r | |
285 | @param Address Fvb device base address. \r | |
286 | \r | |
287 | @retval EFI_SUCCESS Successfully got Fvb's base address. \r | |
288 | @retval EFI_UNSUPPORTED Not supported.\r | |
289 | \r | |
290 | **/\r | |
28a00297 | 291 | EFI_STATUS\r |
292 | EFIAPI\r | |
293 | FwVolBlockGetPhysicalAddress (\r | |
294 | IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,\r | |
295 | OUT EFI_PHYSICAL_ADDRESS *Address\r | |
296 | )\r | |
28a00297 | 297 | {\r |
298 | EFI_FW_VOL_BLOCK_DEVICE *FvbDevice;\r | |
299 | \r | |
300 | FvbDevice = FVB_DEVICE_FROM_THIS (This);\r | |
301 | \r | |
797a9d67 | 302 | if (FvbDevice->FvbAttributes & EFI_FVB2_MEMORY_MAPPED) {\r |
28a00297 | 303 | *Address = FvbDevice->BaseAddress;\r |
304 | return EFI_SUCCESS;\r | |
305 | }\r | |
306 | \r | |
307 | return EFI_UNSUPPORTED;\r | |
308 | }\r | |
309 | \r | |
310 | \r | |
162ed594 | 311 | \r |
312 | /**\r | |
313 | Retrieves the size in bytes of a specific block within a firmware volume.\r | |
314 | \r | |
315 | @param This Indicates the calling context. \r | |
316 | @param Lba Indicates the block for which to return the \r | |
317 | size. \r | |
318 | @param BlockSize Pointer to a caller-allocated UINTN in which the \r | |
319 | size of the block is returned. \r | |
320 | @param NumberOfBlocks Pointer to a caller-allocated UINTN in which the \r | |
321 | number of consecutive blocks starting with Lba \r | |
322 | is returned. All blocks in this range have a \r | |
323 | size of BlockSize. \r | |
324 | \r | |
325 | @retval EFI_SUCCESS The firmware volume base address is returned. \r | |
326 | @retval EFI_INVALID_PARAMETER The requested LBA is out of range.\r | |
327 | \r | |
328 | **/\r | |
28a00297 | 329 | EFI_STATUS\r |
330 | EFIAPI\r | |
331 | FwVolBlockGetBlockSize (\r | |
332 | IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This,\r | |
333 | IN CONST EFI_LBA Lba,\r | |
334 | IN OUT UINTN *BlockSize,\r | |
335 | IN OUT UINTN *NumberOfBlocks\r | |
336 | )\r | |
28a00297 | 337 | {\r |
338 | UINTN TotalBlocks;\r | |
339 | EFI_FW_VOL_BLOCK_DEVICE *FvbDevice;\r | |
340 | EFI_FV_BLOCK_MAP_ENTRY *PtrBlockMapEntry;\r | |
341 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
342 | \r | |
343 | FvbDevice = FVB_DEVICE_FROM_THIS (This);\r | |
344 | \r | |
345 | //\r | |
346 | // Do parameter checking\r | |
347 | //\r | |
348 | if (Lba >= FvbDevice->NumBlocks) {\r | |
349 | return EFI_INVALID_PARAMETER;\r | |
350 | }\r | |
351 | \r | |
352 | FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *)((UINTN)FvbDevice->BaseAddress);\r | |
353 | \r | |
354 | PtrBlockMapEntry = FwVolHeader->BlockMap;\r | |
355 | \r | |
356 | //\r | |
357 | // Search the block map for the given block\r | |
358 | //\r | |
359 | TotalBlocks = 0;\r | |
360 | while ((PtrBlockMapEntry->NumBlocks != 0) || (PtrBlockMapEntry->Length !=0 )) {\r | |
361 | TotalBlocks += PtrBlockMapEntry->NumBlocks;\r | |
362 | if (Lba < TotalBlocks) {\r | |
363 | //\r | |
364 | // We find the range\r | |
365 | //\r | |
366 | break;\r | |
367 | }\r | |
368 | \r | |
369 | PtrBlockMapEntry++;\r | |
370 | }\r | |
371 | \r | |
372 | *BlockSize = PtrBlockMapEntry->Length;\r | |
373 | *NumberOfBlocks = TotalBlocks - (UINTN)Lba;\r | |
374 | \r | |
375 | return EFI_SUCCESS;\r | |
376 | }\r | |
377 | \r | |
378 | \r | |
162ed594 | 379 | \r |
380 | /**\r | |
381 | This routine produces a firmware volume block protocol on a given\r | |
382 | buffer.\r | |
383 | \r | |
384 | @param BaseAddress base address of the firmware volume image \r | |
385 | @param Length length of the firmware volume image \r | |
386 | @param ParentHandle handle of parent firmware volume, if this image \r | |
387 | came from an FV image file in another firmware \r | |
388 | volume (ala capsules) \r | |
389 | @param FvProtocol Firmware volume block protocol produced. \r | |
390 | \r | |
391 | @retval EFI_VOLUME_CORRUPTED Volume corrupted. \r | |
392 | @retval EFI_OUT_OF_RESOURCES No enough buffer to be allocated. \r | |
393 | @retval EFI_SUCCESS Successfully produced a FVB protocol on given \r | |
394 | buffer.\r | |
395 | \r | |
396 | **/\r | |
28a00297 | 397 | EFI_STATUS\r |
398 | ProduceFVBProtocolOnBuffer (\r | |
399 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
400 | IN UINT64 Length,\r | |
401 | IN EFI_HANDLE ParentHandle,\r | |
402 | OUT EFI_HANDLE *FvProtocol OPTIONAL\r | |
403 | )\r | |
28a00297 | 404 | {\r |
405 | EFI_STATUS Status;\r | |
406 | EFI_FW_VOL_BLOCK_DEVICE *FvbDev;\r | |
407 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
408 | UINTN BlockIndex;\r | |
409 | UINTN BlockIndex2;\r | |
410 | UINTN LinearOffset;\r | |
38837959 | 411 | UINT32 FvAlignment;\r |
28a00297 | 412 | EFI_FV_BLOCK_MAP_ENTRY *PtrBlockMapEntry;\r |
38837959 LG |
413 | \r |
414 | FvAlignment = 0;\r | |
28a00297 | 415 | FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)BaseAddress;\r |
416 | //\r | |
417 | // Validate FV Header, if not as expected, return\r | |
418 | //\r | |
419 | if (FwVolHeader->Signature != EFI_FVH_SIGNATURE) {\r | |
420 | return EFI_VOLUME_CORRUPTED;\r | |
421 | }\r | |
422 | //\r | |
38837959 LG |
423 | // Get FvHeader alignment\r |
424 | //\r | |
425 | FvAlignment = 1 << ((FwVolHeader->Attributes & EFI_FVB2_ALIGNMENT) >> 16);\r | |
426 | if (FvAlignment < 8) {\r | |
427 | FvAlignment = 8;\r | |
428 | }\r | |
429 | if ((UINTN)BaseAddress % FvAlignment != 0) {\r | |
430 | //\r | |
431 | // FvImage buffer is not at its required alignment.\r | |
432 | //\r | |
433 | return EFI_VOLUME_CORRUPTED;\r | |
434 | }\r | |
435 | //\r | |
28a00297 | 436 | // Allocate EFI_FW_VOL_BLOCK_DEVICE \r |
437 | //\r | |
438 | FvbDev = CoreAllocateCopyPool (sizeof (EFI_FW_VOL_BLOCK_DEVICE), &mFwVolBlock);\r | |
439 | if (FvbDev == NULL) {\r | |
440 | return EFI_OUT_OF_RESOURCES;\r | |
441 | }\r | |
442 | \r | |
443 | FvbDev->BaseAddress = BaseAddress;\r | |
444 | FvbDev->FvbAttributes = FwVolHeader->Attributes;\r | |
445 | FvbDev->FwVolBlockInstance.ParentHandle = ParentHandle;\r | |
446 | \r | |
447 | //\r | |
448 | // Init the block caching fields of the device\r | |
449 | // First, count the number of blocks\r | |
450 | //\r | |
451 | FvbDev->NumBlocks = 0;\r | |
452 | for (PtrBlockMapEntry = FwVolHeader->BlockMap;\r | |
453 | PtrBlockMapEntry->NumBlocks != 0;\r | |
454 | PtrBlockMapEntry++) {\r | |
455 | FvbDev->NumBlocks += PtrBlockMapEntry->NumBlocks;\r | |
456 | }\r | |
457 | //\r | |
458 | // Second, allocate the cache\r | |
459 | //\r | |
460 | FvbDev->LbaCache = CoreAllocateBootServicesPool (FvbDev->NumBlocks * sizeof (LBA_CACHE));\r | |
461 | if (FvbDev->LbaCache == NULL) {\r | |
462 | CoreFreePool (FvbDev);\r | |
463 | return EFI_OUT_OF_RESOURCES;\r | |
464 | }\r | |
465 | //\r | |
466 | // Last, fill in the cache with the linear address of the blocks\r | |
467 | //\r | |
468 | BlockIndex = 0;\r | |
469 | LinearOffset = 0;\r | |
470 | for (PtrBlockMapEntry = FwVolHeader->BlockMap;\r | |
471 | PtrBlockMapEntry->NumBlocks != 0; PtrBlockMapEntry++) {\r | |
472 | for (BlockIndex2 = 0; BlockIndex2 < PtrBlockMapEntry->NumBlocks; BlockIndex2++) {\r | |
473 | FvbDev->LbaCache[BlockIndex].Base = LinearOffset;\r | |
474 | FvbDev->LbaCache[BlockIndex].Length = PtrBlockMapEntry->Length;\r | |
475 | LinearOffset += PtrBlockMapEntry->Length;\r | |
476 | BlockIndex++;\r | |
477 | }\r | |
478 | }\r | |
479 | \r | |
480 | //\r | |
481 | // Set up the devicepath\r | |
482 | //\r | |
483 | FvbDev->DevicePath.MemMapDevPath.StartingAddress = BaseAddress;\r | |
484 | FvbDev->DevicePath.MemMapDevPath.EndingAddress = BaseAddress + FwVolHeader->FvLength - 1;\r | |
485 | \r | |
486 | //\r | |
487 | //\r | |
488 | // Attach FvVolBlock Protocol to new handle\r | |
489 | //\r | |
490 | Status = CoreInstallMultipleProtocolInterfaces (\r | |
491 | &FvbDev->Handle,\r | |
492 | &gEfiFirmwareVolumeBlockProtocolGuid, &FvbDev->FwVolBlockInstance,\r | |
493 | &gEfiDevicePathProtocolGuid, &FvbDev->DevicePath,\r | |
494 | &gEfiFirmwareVolumeDispatchProtocolGuid, NULL,\r | |
495 | NULL\r | |
496 | );\r | |
497 | \r | |
498 | //\r | |
499 | // If they want the handle back, set it.\r | |
500 | //\r | |
501 | if (FvProtocol != NULL) {\r | |
502 | *FvProtocol = FvbDev->Handle;\r | |
503 | }\r | |
504 | \r | |
505 | return Status;\r | |
506 | }\r | |
507 | \r | |
508 | \r | |
162ed594 | 509 | \r |
510 | /**\r | |
511 | This routine is the driver initialization entry point. It initializes the\r | |
512 | libraries, consumes FV hobs and NT_NON_MM_FV environment variable and\r | |
513 | produces instances of FW_VOL_BLOCK_PROTOCOL as appropriate.\r | |
514 | \r | |
515 | @param ImageHandle The image handle. \r | |
516 | @param SystemTable The system table. \r | |
517 | \r | |
518 | @retval EFI_SUCCESS Successfully initialized firmware volume block \r | |
519 | driver.\r | |
520 | \r | |
521 | **/\r | |
28a00297 | 522 | EFI_STATUS\r |
523 | EFIAPI\r | |
524 | FwVolBlockDriverInit (\r | |
525 | IN EFI_HANDLE ImageHandle,\r | |
526 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
527 | )\r | |
28a00297 | 528 | {\r |
529 | EFI_PEI_HOB_POINTERS FvHob;\r | |
530 | //\r | |
531 | // Core Needs Firmware Volumes to function\r | |
532 | //\r | |
533 | FvHob.Raw = GetHobList ();\r | |
534 | while ((FvHob.Raw = GetNextHob (EFI_HOB_TYPE_FV, FvHob.Raw)) != NULL) {\r | |
535 | //\r | |
536 | // Produce an FVB protocol for it\r | |
537 | //\r | |
538 | ProduceFVBProtocolOnBuffer (FvHob.FirmwareVolume->BaseAddress, FvHob.FirmwareVolume->Length, NULL, NULL); \r | |
539 | FvHob.Raw = GET_NEXT_HOB (FvHob);\r | |
540 | }\r | |
541 | return EFI_SUCCESS;\r | |
542 | }\r | |
543 | \r | |
544 | \r | |
162ed594 | 545 | \r |
546 | /**\r | |
547 | This DXE service routine is used to process a firmware volume. In\r | |
548 | particular, it can be called by BDS to process a single firmware\r | |
549 | volume found in a capsule.\r | |
550 | \r | |
551 | @param FvHeader pointer to a firmware volume header \r | |
552 | @param Size the size of the buffer pointed to by FvHeader \r | |
553 | @param FVProtocolHandle the handle on which a firmware volume protocol \r | |
554 | was produced for the firmware volume passed in. \r | |
555 | \r | |
556 | @retval EFI_OUT_OF_RESOURCES if an FVB could not be produced due to lack of \r | |
557 | system resources \r | |
558 | @retval EFI_VOLUME_CORRUPTED if the volume was corrupted \r | |
559 | @retval EFI_SUCCESS a firmware volume protocol was produced for the \r | |
560 | firmware volume\r | |
561 | \r | |
562 | **/\r | |
28a00297 | 563 | EFI_STATUS\r |
564 | CoreProcessFirmwareVolume (\r | |
565 | IN VOID *FvHeader,\r | |
566 | IN UINTN Size, \r | |
567 | OUT EFI_HANDLE *FVProtocolHandle\r | |
568 | )\r | |
28a00297 | 569 | {\r |
570 | VOID *Ptr;\r | |
571 | EFI_STATUS Status;\r | |
572 | \r | |
573 | *FVProtocolHandle = NULL;\r | |
574 | Status = ProduceFVBProtocolOnBuffer ( \r | |
575 | (EFI_PHYSICAL_ADDRESS) (UINTN) FvHeader, \r | |
576 | (UINT64)Size, \r | |
577 | NULL, \r | |
578 | FVProtocolHandle\r | |
579 | );\r | |
580 | //\r | |
581 | // Since in our implementation we use register-protocol-notify to put a\r | |
582 | // FV protocol on the FVB protocol handle, we can't directly verify that\r | |
583 | // the FV protocol was produced. Therefore here we will check the handle\r | |
584 | // and make sure an FV protocol is on it. This indicates that all went \r | |
585 | // well. Otherwise we have to assume that the volume was corrupted \r | |
586 | // somehow.\r | |
587 | //\r | |
588 | if (!EFI_ERROR(Status)) {\r | |
589 | Ptr = NULL;\r | |
0c2b5da8 | 590 | Status = CoreHandleProtocol (*FVProtocolHandle, &gEfiFirmwareVolume2ProtocolGuid, (VOID **)&Ptr);\r |
28a00297 | 591 | if (EFI_ERROR(Status) || (Ptr == NULL)) {\r |
592 | return EFI_VOLUME_CORRUPTED;\r | |
593 | }\r | |
594 | return EFI_SUCCESS;\r | |
595 | }\r | |
596 | return Status;\r | |
597 | }\r | |
598 | \r | |
599 | \r | |
162ed594 | 600 | \r |