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d7dec593 | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2006 - 2007, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | FtwWorkSpace.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Revision History\r | |
19 | \r | |
20 | --*/\r | |
21 | \r | |
22 | \r | |
23 | #include <FtwLite.h>\r | |
24 | \r | |
25 | BOOLEAN\r | |
26 | IsValidWorkSpace (\r | |
27 | IN EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER *WorkingHeader\r | |
28 | )\r | |
29 | /*++\r | |
30 | \r | |
31 | Routine Description:\r | |
32 | Check to see if it is a valid work space.\r | |
33 | \r | |
34 | Arguments:\r | |
35 | WorkingHeader - Pointer of working block header \r | |
36 | \r | |
37 | Returns:\r | |
38 | EFI_SUCCESS - The function completed successfully\r | |
39 | EFI_ABORTED - The function could not complete successfully.\r | |
40 | \r | |
41 | --*/\r | |
42 | {\r | |
43 | EFI_STATUS Status;\r | |
44 | EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER WorkingBlockHeader;\r | |
45 | \r | |
46 | ASSERT (WorkingHeader != NULL);\r | |
47 | if (WorkingHeader->WorkingBlockValid != FTW_VALID_STATE) {\r | |
48 | return FALSE;\r | |
49 | }\r | |
50 | //\r | |
51 | // Check signature with gEfiSystemNvDataFvGuid\r | |
52 | //\r | |
53 | if (!CompareGuid (&gEfiSystemNvDataFvGuid, &WorkingHeader->Signature)) {\r | |
54 | return FALSE;\r | |
55 | }\r | |
56 | //\r | |
57 | // Check the CRC of header\r | |
58 | //\r | |
59 | CopyMem (\r | |
60 | &WorkingBlockHeader,\r | |
61 | WorkingHeader,\r | |
62 | sizeof (EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER)\r | |
63 | );\r | |
64 | \r | |
65 | //\r | |
66 | // Filter out the Crc and State fields\r | |
67 | //\r | |
68 | SetMem (\r | |
69 | &WorkingBlockHeader.Crc,\r | |
70 | sizeof (UINT32),\r | |
71 | FTW_ERASED_BYTE\r | |
72 | );\r | |
73 | WorkingBlockHeader.WorkingBlockValid = FTW_ERASE_POLARITY;\r | |
74 | WorkingBlockHeader.WorkingBlockInvalid = FTW_ERASE_POLARITY;\r | |
75 | \r | |
76 | //\r | |
77 | // Calculate the Crc of woking block header\r | |
78 | //\r | |
79 | Status = gBS->CalculateCrc32 (\r | |
80 | (UINT8 *) &WorkingBlockHeader,\r | |
81 | sizeof (EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER),\r | |
82 | &WorkingBlockHeader.Crc\r | |
83 | );\r | |
84 | ASSERT_EFI_ERROR (Status);\r | |
85 | \r | |
86 | if (WorkingBlockHeader.Crc != WorkingHeader->Crc) {\r | |
87 | DEBUG ((EFI_D_FTW_LITE, "FtwLite: Work block header CRC check error\n"));\r | |
88 | return FALSE;\r | |
89 | }\r | |
90 | \r | |
91 | return TRUE;\r | |
92 | }\r | |
93 | \r | |
94 | EFI_STATUS\r | |
95 | InitWorkSpaceHeader (\r | |
96 | IN EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER *WorkingHeader\r | |
97 | )\r | |
98 | /*++\r | |
99 | \r | |
100 | Routine Description:\r | |
101 | Initialize a work space when there is no work space.\r | |
102 | \r | |
103 | Arguments:\r | |
104 | WorkingHeader - Pointer of working block header \r | |
105 | \r | |
106 | Returns:\r | |
107 | EFI_SUCCESS - The function completed successfully\r | |
108 | EFI_ABORTED - The function could not complete successfully.\r | |
109 | \r | |
110 | --*/\r | |
111 | {\r | |
112 | EFI_STATUS Status;\r | |
113 | \r | |
114 | ASSERT (WorkingHeader != NULL);\r | |
115 | \r | |
116 | //\r | |
117 | // Here using gEfiSystemNvDataFvGuid as the signature.\r | |
118 | //\r | |
119 | CopyMem (\r | |
120 | &WorkingHeader->Signature,\r | |
121 | &gEfiSystemNvDataFvGuid,\r | |
122 | sizeof (EFI_GUID)\r | |
123 | );\r | |
124 | WorkingHeader->WriteQueueSize = FTW_WORKING_QUEUE_SIZE;\r | |
125 | \r | |
126 | //\r | |
127 | // Crc is calculated with all the fields except Crc and STATE\r | |
128 | //\r | |
129 | WorkingHeader->WorkingBlockValid = FTW_ERASE_POLARITY;\r | |
130 | WorkingHeader->WorkingBlockInvalid = FTW_ERASE_POLARITY;\r | |
131 | SetMem (&WorkingHeader->Crc, sizeof (UINT32), FTW_ERASED_BYTE);\r | |
132 | \r | |
133 | //\r | |
134 | // Calculate the CRC value\r | |
135 | //\r | |
136 | Status = gBS->CalculateCrc32 (\r | |
137 | (UINT8 *) WorkingHeader,\r | |
138 | sizeof (EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER),\r | |
139 | &WorkingHeader->Crc\r | |
140 | );\r | |
141 | ASSERT_EFI_ERROR (Status);\r | |
142 | \r | |
143 | //\r | |
144 | // Restore the WorkingBlockValid flag to VALID state\r | |
145 | //\r | |
146 | WorkingHeader->WorkingBlockValid = FTW_VALID_STATE;\r | |
147 | WorkingHeader->WorkingBlockInvalid = FTW_INVALID_STATE;\r | |
148 | \r | |
149 | return EFI_SUCCESS;\r | |
150 | }\r | |
151 | \r | |
152 | EFI_STATUS\r | |
153 | FtwUpdateFvState (\r | |
154 | IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvBlock,\r | |
155 | IN EFI_LBA Lba,\r | |
156 | IN UINTN Offset,\r | |
157 | IN UINT8 NewBit\r | |
158 | )\r | |
159 | /*++\r | |
160 | \r | |
161 | Routine Description:\r | |
162 | Update a bit of state on a block device. The location of the bit is \r | |
163 | calculated by the (Lba, Offset, bit). Here bit is determined by the \r | |
164 | the name of a certain bit.\r | |
165 | \r | |
166 | Arguments:\r | |
167 | FvBlock - FVB Protocol interface to access SrcBlock and DestBlock\r | |
168 | Lba - Lba of a block\r | |
169 | Offset - Offset on the Lba\r | |
170 | NewBit - New value that will override the old value if it can be change\r | |
171 | \r | |
172 | Returns:\r | |
173 | EFI_SUCCESS - A state bit has been updated successfully\r | |
174 | Others - Access block device error.\r | |
175 | \r | |
176 | Notes:\r | |
177 | Assume all bits of State are inside the same BYTE. \r | |
178 | \r | |
179 | EFI_ABORTED - Read block fail\r | |
180 | --*/\r | |
181 | {\r | |
182 | EFI_STATUS Status;\r | |
183 | UINT8 State;\r | |
184 | UINTN Length;\r | |
185 | \r | |
186 | //\r | |
187 | // Read state from device, assume State is only one byte.\r | |
188 | //\r | |
189 | Length = sizeof (UINT8);\r | |
190 | Status = FvBlock->Read (FvBlock, Lba, Offset, &Length, &State);\r | |
191 | if (EFI_ERROR (Status)) {\r | |
192 | return EFI_ABORTED;\r | |
193 | }\r | |
194 | \r | |
195 | State ^= FTW_POLARITY_REVERT;\r | |
196 | State = (UINT8) (State | NewBit);\r | |
197 | State ^= FTW_POLARITY_REVERT;\r | |
198 | \r | |
199 | //\r | |
200 | // Write state back to device\r | |
201 | //\r | |
202 | Length = sizeof (UINT8);\r | |
203 | Status = FvBlock->Write (FvBlock, Lba, Offset, &Length, &State);\r | |
204 | \r | |
205 | return Status;\r | |
206 | }\r | |
207 | \r | |
208 | EFI_STATUS\r | |
209 | FtwGetLastRecord (\r | |
210 | IN EFI_FTW_LITE_DEVICE *FtwLiteDevice,\r | |
211 | OUT EFI_FTW_LITE_RECORD **FtwLastRecord\r | |
212 | )\r | |
213 | /*++\r | |
214 | \r | |
215 | Routine Description:\r | |
216 | Get the last Write record pointer. \r | |
217 | The last record is the record whose 'complete' state hasn't been set.\r | |
218 | After all, this header may be a EMPTY header entry for next Allocate. \r | |
219 | \r | |
220 | Arguments:\r | |
221 | FtwLiteDevice - Private data of this driver\r | |
222 | FtwLastRecord - Pointer to retrieve the last write record\r | |
223 | \r | |
224 | Returns:\r | |
225 | EFI_SUCCESS - Get the last write record successfully\r | |
226 | EFI_ABORTED - The FTW work space is damaged\r | |
227 | \r | |
228 | --*/\r | |
229 | {\r | |
230 | EFI_FTW_LITE_RECORD *Record;\r | |
231 | \r | |
232 | Record = (EFI_FTW_LITE_RECORD *) (FtwLiteDevice->FtwWorkSpaceHeader + 1);\r | |
233 | while (Record->WriteCompleted == FTW_VALID_STATE) {\r | |
234 | //\r | |
235 | // If Offset exceed the FTW work space boudary, return error.\r | |
236 | //\r | |
237 | if ((UINTN) ((UINT8 *) Record - FtwLiteDevice->FtwWorkSpace) > FtwLiteDevice->FtwWorkSpaceSize) {\r | |
238 | return EFI_ABORTED;\r | |
239 | }\r | |
240 | \r | |
241 | Record++;\r | |
242 | }\r | |
243 | //\r | |
244 | // Last write record is found\r | |
245 | //\r | |
246 | *FtwLastRecord = Record;\r | |
247 | return EFI_SUCCESS;\r | |
248 | }\r | |
249 | \r | |
250 | EFI_STATUS\r | |
251 | WorkSpaceRefresh (\r | |
252 | IN EFI_FTW_LITE_DEVICE *FtwLiteDevice\r | |
253 | )\r | |
254 | /*++\r | |
255 | \r | |
256 | Routine Description:\r | |
257 | Read from working block to refresh the work space in memory.\r | |
258 | \r | |
259 | Arguments:\r | |
260 | FtwLiteDevice - Point to private data of FTW driver\r | |
261 | \r | |
262 | Returns:\r | |
263 | EFI_SUCCESS - The function completed successfully\r | |
264 | EFI_ABORTED - The function could not complete successfully.\r | |
265 | \r | |
266 | --*/\r | |
267 | {\r | |
268 | EFI_STATUS Status;\r | |
269 | UINTN Length;\r | |
270 | UINTN Offset;\r | |
271 | EFI_FTW_LITE_RECORD *Record;\r | |
272 | \r | |
273 | //\r | |
274 | // Initialize WorkSpace as FTW_ERASED_BYTE\r | |
275 | //\r | |
276 | SetMem (\r | |
277 | FtwLiteDevice->FtwWorkSpace,\r | |
278 | FtwLiteDevice->FtwWorkSpaceSize,\r | |
279 | FTW_ERASED_BYTE\r | |
280 | );\r | |
281 | \r | |
282 | //\r | |
283 | // Read from working block\r | |
284 | //\r | |
285 | Length = FtwLiteDevice->FtwWorkSpaceSize;\r | |
286 | Status = FtwLiteDevice->FtwFvBlock->Read (\r | |
287 | FtwLiteDevice->FtwFvBlock,\r | |
288 | FtwLiteDevice->FtwWorkSpaceLba,\r | |
289 | FtwLiteDevice->FtwWorkSpaceBase,\r | |
290 | &Length,\r | |
291 | FtwLiteDevice->FtwWorkSpace\r | |
292 | );\r | |
293 | if (EFI_ERROR (Status)) {\r | |
294 | return EFI_ABORTED;\r | |
295 | }\r | |
296 | //\r | |
297 | // Refresh the FtwLastRecord\r | |
298 | //\r | |
299 | Status = FtwGetLastRecord (FtwLiteDevice, &FtwLiteDevice->FtwLastRecord);\r | |
300 | \r | |
301 | Record = FtwLiteDevice->FtwLastRecord;\r | |
302 | Offset = (UINTN) (UINT8 *) Record - (UINTN) FtwLiteDevice->FtwWorkSpace;\r | |
303 | \r | |
304 | //\r | |
305 | // IF work space has error or Record is out of the workspace limit, THEN\r | |
306 | // call reclaim.\r | |
307 | //\r | |
308 | if (EFI_ERROR (Status) || (Offset + WRITE_TOTAL_SIZE >= FtwLiteDevice->FtwWorkSpaceSize)) {\r | |
309 | //\r | |
310 | // reclaim work space in working block.\r | |
311 | //\r | |
312 | Status = FtwReclaimWorkSpace (FtwLiteDevice);\r | |
313 | if (EFI_ERROR (Status)) {\r | |
314 | DEBUG ((EFI_D_FTW_LITE, "FtwLite: Reclaim workspace - %r\n", Status));\r | |
315 | return EFI_ABORTED;\r | |
316 | }\r | |
317 | }\r | |
318 | \r | |
319 | return EFI_SUCCESS;\r | |
320 | }\r | |
321 | \r | |
322 | EFI_STATUS\r | |
323 | CleanupWorkSpace (\r | |
324 | IN EFI_FTW_LITE_DEVICE *FtwLiteDevice,\r | |
325 | IN OUT UINT8 *FtwSpaceBuffer,\r | |
326 | IN UINTN BufferSize\r | |
327 | )\r | |
328 | /*++\r | |
329 | \r | |
330 | Routine Description:\r | |
331 | Reclaim the work space. Get rid of all the completed write records\r | |
332 | and write records in the Fault Tolerant work space.\r | |
333 | \r | |
334 | Arguments:\r | |
335 | FtwLiteDevice - Point to private data of FTW driver\r | |
336 | FtwSpaceBuffer - Buffer to contain the reclaimed clean data\r | |
337 | BufferSize - Size of the FtwSpaceBuffer\r | |
338 | \r | |
339 | Returns:\r | |
340 | EFI_SUCCESS - The function completed successfully\r | |
341 | EFI_BUFFER_TOO_SMALL - The FtwSpaceBuffer is too small\r | |
342 | EFI_ABORTED - The function could not complete successfully.\r | |
343 | \r | |
344 | --*/\r | |
345 | {\r | |
346 | UINTN Length;\r | |
347 | EFI_FTW_LITE_RECORD *Record;\r | |
348 | \r | |
349 | //\r | |
350 | // To check if the buffer is large enough\r | |
351 | //\r | |
352 | Length = FtwLiteDevice->FtwWorkSpaceSize;\r | |
353 | if (BufferSize < Length) {\r | |
354 | return EFI_BUFFER_TOO_SMALL;\r | |
355 | }\r | |
356 | //\r | |
357 | // Clear the content of buffer that will save the new work space data\r | |
358 | //\r | |
359 | SetMem (FtwSpaceBuffer, Length, FTW_ERASED_BYTE);\r | |
360 | \r | |
361 | //\r | |
362 | // Copy EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER to buffer\r | |
363 | //\r | |
364 | CopyMem (\r | |
365 | FtwSpaceBuffer,\r | |
366 | FtwLiteDevice->FtwWorkSpaceHeader,\r | |
367 | sizeof (EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER)\r | |
368 | );\r | |
369 | \r | |
370 | //\r | |
371 | // Get the last record\r | |
372 | //\r | |
373 | Record = FtwLiteDevice->FtwLastRecord;\r | |
374 | if ((Record != NULL) && (Record->WriteAllocated == FTW_VALID_STATE) && (Record->WriteCompleted != FTW_VALID_STATE)) {\r | |
375 | CopyMem (\r | |
376 | (UINT8 *) FtwSpaceBuffer + sizeof (EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER),\r | |
377 | Record,\r | |
378 | WRITE_TOTAL_SIZE\r | |
379 | );\r | |
380 | }\r | |
381 | \r | |
382 | return EFI_SUCCESS;\r | |
383 | }\r | |
384 | \r | |
385 | EFI_STATUS\r | |
386 | FtwReclaimWorkSpace (\r | |
387 | IN EFI_FTW_LITE_DEVICE *FtwLiteDevice\r | |
388 | )\r | |
389 | /*++\r | |
390 | \r | |
391 | Routine Description:\r | |
392 | Reclaim the work space on the working block.\r | |
393 | \r | |
394 | Arguments:\r | |
395 | FtwLiteDevice - Point to private data of FTW driver\r | |
396 | \r | |
397 | Returns:\r | |
398 | EFI_SUCCESS - The function completed successfully\r | |
399 | EFI_OUT_OF_RESOURCES - Allocate memory error\r | |
400 | EFI_ABORTED - The function could not complete successfully\r | |
401 | \r | |
402 | --*/\r | |
403 | {\r | |
404 | EFI_STATUS Status;\r | |
405 | UINT8 *TempBuffer;\r | |
406 | UINTN TempBufferSize;\r | |
407 | UINT8 *Ptr;\r | |
408 | UINTN Length;\r | |
409 | UINTN Index;\r | |
410 | UINTN SpareBufferSize;\r | |
411 | UINT8 *SpareBuffer;\r | |
412 | EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER *WorkingBlockHeader;\r | |
413 | \r | |
414 | DEBUG ((EFI_D_FTW_LITE, "FtwLite: start to reclaim work space\n"));\r | |
415 | \r | |
416 | //\r | |
417 | // Read all original data from working block to a memory buffer\r | |
418 | //\r | |
419 | TempBufferSize = FtwLiteDevice->SpareAreaLength;\r | |
420 | TempBuffer = AllocateZeroPool (TempBufferSize);\r | |
421 | if (TempBuffer != NULL) {\r | |
422 | return EFI_OUT_OF_RESOURCES;\r | |
423 | }\r | |
424 | \r | |
425 | Ptr = TempBuffer;\r | |
426 | for (Index = 0; Index < FtwLiteDevice->NumberOfSpareBlock; Index += 1) {\r | |
427 | Length = FtwLiteDevice->SizeOfSpareBlock;\r | |
428 | Status = FtwLiteDevice->FtwFvBlock->Read (\r | |
429 | FtwLiteDevice->FtwFvBlock,\r | |
430 | FtwLiteDevice->FtwWorkBlockLba + Index,\r | |
431 | 0,\r | |
432 | &Length,\r | |
433 | Ptr\r | |
434 | );\r | |
435 | if (EFI_ERROR (Status)) {\r | |
436 | FreePool (TempBuffer);\r | |
437 | return EFI_ABORTED;\r | |
438 | }\r | |
439 | \r | |
440 | Ptr += Length;\r | |
441 | }\r | |
442 | //\r | |
443 | // Clean up the workspace, remove all the completed records.\r | |
444 | //\r | |
445 | Ptr = TempBuffer +\r | |
446 | ((UINTN) (FtwLiteDevice->FtwWorkSpaceLba - FtwLiteDevice->FtwWorkBlockLba)) *\r | |
447 | FtwLiteDevice->SizeOfSpareBlock + FtwLiteDevice->FtwWorkSpaceBase;\r | |
448 | \r | |
449 | Status = CleanupWorkSpace (\r | |
450 | FtwLiteDevice,\r | |
451 | Ptr,\r | |
452 | FtwLiteDevice->FtwWorkSpaceSize\r | |
453 | );\r | |
454 | \r | |
455 | CopyMem (\r | |
456 | FtwLiteDevice->FtwWorkSpace,\r | |
457 | Ptr,\r | |
458 | FtwLiteDevice->FtwWorkSpaceSize\r | |
459 | );\r | |
460 | \r | |
461 | Status = FtwGetLastRecord (FtwLiteDevice, &FtwLiteDevice->FtwLastRecord);\r | |
462 | \r | |
463 | //\r | |
464 | // Set the WorkingBlockValid and WorkingBlockInvalid as INVALID\r | |
465 | //\r | |
466 | WorkingBlockHeader = (EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER *) Ptr;\r | |
467 | WorkingBlockHeader->WorkingBlockValid = FTW_INVALID_STATE;\r | |
468 | WorkingBlockHeader->WorkingBlockInvalid = FTW_INVALID_STATE;\r | |
469 | \r | |
470 | //\r | |
471 | // Try to keep the content of spare block\r | |
472 | // Save spare block into a spare backup memory buffer (Sparebuffer)\r | |
473 | //\r | |
474 | SpareBufferSize = FtwLiteDevice->SpareAreaLength;\r | |
475 | SpareBuffer = AllocatePool (SpareBufferSize);\r | |
476 | if (SpareBuffer == NULL) {\r | |
477 | FreePool (TempBuffer);\r | |
478 | return EFI_OUT_OF_RESOURCES;\r | |
479 | }\r | |
480 | \r | |
481 | Ptr = SpareBuffer;\r | |
482 | for (Index = 0; Index < FtwLiteDevice->NumberOfSpareBlock; Index += 1) {\r | |
483 | Length = FtwLiteDevice->SizeOfSpareBlock;\r | |
484 | Status = FtwLiteDevice->FtwBackupFvb->Read (\r | |
485 | FtwLiteDevice->FtwBackupFvb,\r | |
486 | FtwLiteDevice->FtwSpareLba + Index,\r | |
487 | 0,\r | |
488 | &Length,\r | |
489 | Ptr\r | |
490 | );\r | |
491 | if (EFI_ERROR (Status)) {\r | |
492 | FreePool (TempBuffer);\r | |
493 | FreePool (SpareBuffer);\r | |
494 | return EFI_ABORTED;\r | |
495 | }\r | |
496 | \r | |
497 | Ptr += Length;\r | |
498 | }\r | |
499 | //\r | |
500 | // Write the memory buffer to spare block\r | |
501 | //\r | |
502 | Status = FtwEraseSpareBlock (FtwLiteDevice);\r | |
503 | Ptr = TempBuffer;\r | |
504 | for (Index = 0; Index < FtwLiteDevice->NumberOfSpareBlock; Index += 1) {\r | |
505 | Length = FtwLiteDevice->SizeOfSpareBlock;\r | |
506 | Status = FtwLiteDevice->FtwBackupFvb->Write (\r | |
507 | FtwLiteDevice->FtwBackupFvb,\r | |
508 | FtwLiteDevice->FtwSpareLba + Index,\r | |
509 | 0,\r | |
510 | &Length,\r | |
511 | Ptr\r | |
512 | );\r | |
513 | if (EFI_ERROR (Status)) {\r | |
514 | FreePool (TempBuffer);\r | |
515 | FreePool (SpareBuffer);\r | |
516 | return EFI_ABORTED;\r | |
517 | }\r | |
518 | \r | |
519 | Ptr += Length;\r | |
520 | }\r | |
521 | //\r | |
522 | // Free TempBuffer\r | |
523 | //\r | |
524 | FreePool (TempBuffer);\r | |
525 | \r | |
526 | //\r | |
527 | // Write the spare block to working block\r | |
528 | //\r | |
529 | Status = FlushSpareBlockToWorkingBlock (FtwLiteDevice);\r | |
530 | if (EFI_ERROR (Status)) {\r | |
531 | FreePool (SpareBuffer);\r | |
532 | return Status;\r | |
533 | }\r | |
534 | //\r | |
535 | // Restore spare backup buffer into spare block , if no failure happened during FtwWrite.\r | |
536 | //\r | |
537 | Status = FtwEraseSpareBlock (FtwLiteDevice);\r | |
538 | Ptr = SpareBuffer;\r | |
539 | for (Index = 0; Index < FtwLiteDevice->NumberOfSpareBlock; Index += 1) {\r | |
540 | Length = FtwLiteDevice->SizeOfSpareBlock;\r | |
541 | Status = FtwLiteDevice->FtwBackupFvb->Write (\r | |
542 | FtwLiteDevice->FtwBackupFvb,\r | |
543 | FtwLiteDevice->FtwSpareLba + Index,\r | |
544 | 0,\r | |
545 | &Length,\r | |
546 | Ptr\r | |
547 | );\r | |
548 | if (EFI_ERROR (Status)) {\r | |
549 | FreePool (SpareBuffer);\r | |
550 | return EFI_ABORTED;\r | |
551 | }\r | |
552 | \r | |
553 | Ptr += Length;\r | |
554 | }\r | |
555 | \r | |
556 | FreePool (SpareBuffer);\r | |
557 | \r | |
558 | DEBUG ((EFI_D_FTW_LITE, "FtwLite: reclaim work space success\n"));\r | |
559 | \r | |
560 | return EFI_SUCCESS;\r | |
561 | }\r |