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878ddf1f | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2006, 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 | BdsBoot.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | BDS Lib functions which relate with create or process the boot\r | |
19 | option.\r | |
20 | \r | |
21 | --*/\r | |
22 | #include "Performance.h"\r | |
23 | \r | |
24 | BOOLEAN mEnumBootDevice = FALSE;\r | |
25 | \r | |
26 | EFI_STATUS\r | |
27 | BdsLibDoLegacyBoot (\r | |
28 | IN BDS_COMMON_OPTION *Option\r | |
29 | )\r | |
30 | /*++\r | |
31 | \r | |
32 | Routine Description:\r | |
33 | \r | |
34 | Boot the legacy system with the boot option\r | |
35 | \r | |
36 | Arguments:\r | |
37 | \r | |
38 | Option - The legacy boot option which have BBS device path\r | |
39 | \r | |
40 | Returns:\r | |
41 | \r | |
42 | EFI_UNSUPPORTED - There is no legacybios protocol, do not support\r | |
43 | legacy boot.\r | |
44 | \r | |
45 | EFI_STATUS - Return the status of LegacyBios->LegacyBoot ().\r | |
46 | \r | |
47 | --*/\r | |
48 | {\r | |
49 | EFI_STATUS Status;\r | |
50 | EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;\r | |
51 | \r | |
52 | Status = gBS->LocateProtocol (&gEfiLegacyBiosProtocolGuid, NULL, &LegacyBios);\r | |
53 | if (EFI_ERROR (Status)) {\r | |
54 | //\r | |
55 | // If no LegacyBios protocol we do not support legacy boot\r | |
56 | //\r | |
57 | return EFI_UNSUPPORTED;\r | |
58 | }\r | |
59 | //\r | |
60 | // Notes: if we seperate the int 19, then we don't need to refresh BBS\r | |
61 | //\r | |
62 | BdsRefreshBbsTableForBoot (Option);\r | |
63 | \r | |
64 | //\r | |
65 | // Write boot to OS performance data to a file\r | |
66 | //\r | |
67 | PERF_CODE (\r | |
68 | WriteBootToOsPerformanceData ();\r | |
69 | );\r | |
70 | \r | |
71 | \r | |
72 | DEBUG ((EFI_D_INFO | EFI_D_LOAD, "Legacy Boot: %S\n", Option->Description));\r | |
73 | return LegacyBios->LegacyBoot (\r | |
74 | LegacyBios,\r | |
75 | (BBS_BBS_DEVICE_PATH *) Option->DevicePath,\r | |
76 | Option->LoadOptionsSize,\r | |
77 | Option->LoadOptions\r | |
78 | );\r | |
79 | }\r | |
80 | \r | |
81 | EFI_STATUS\r | |
82 | BdsLibBootViaBootOption (\r | |
83 | IN BDS_COMMON_OPTION * Option,\r | |
84 | IN EFI_DEVICE_PATH_PROTOCOL * DevicePath,\r | |
85 | OUT UINTN *ExitDataSize,\r | |
86 | OUT CHAR16 **ExitData OPTIONAL\r | |
87 | )\r | |
88 | /*++\r | |
89 | \r | |
90 | Routine Description:\r | |
91 | \r | |
92 | Process the boot option follow the EFI 1.1 specification and \r | |
93 | special treat the legacy boot option with BBS_DEVICE_PATH.\r | |
94 | \r | |
95 | Arguments:\r | |
96 | \r | |
97 | Option - The boot option need to be processed\r | |
98 | \r | |
99 | DevicePath - The device path which describe where to load \r | |
100 | the boot image or the legcy BBS device path \r | |
101 | to boot the legacy OS\r | |
102 | \r | |
103 | ExitDataSize - Returned directly from gBS->StartImage ()\r | |
104 | \r | |
105 | ExitData - Returned directly from gBS->StartImage ()\r | |
106 | \r | |
107 | Returns:\r | |
108 | \r | |
109 | EFI_SUCCESS - Status from gBS->StartImage (),\r | |
110 | or BdsBootByDiskSignatureAndPartition ()\r | |
111 | \r | |
112 | EFI_NOT_FOUND - If the Device Path is not found in the system\r | |
113 | \r | |
114 | --*/\r | |
115 | {\r | |
116 | EFI_STATUS Status;\r | |
117 | EFI_HANDLE Handle;\r | |
118 | EFI_HANDLE ImageHandle;\r | |
119 | EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;\r | |
120 | EFI_DEVICE_PATH_PROTOCOL *FilePath;\r | |
121 | EFI_LOADED_IMAGE_PROTOCOL *ImageInfo;\r | |
122 | EFI_ACPI_S3_SAVE_PROTOCOL *AcpiS3Save;\r | |
c587fa4b | 123 | EFI_BLOCK_IO_PROTOCOL *BlkIo;\r |
124 | VOID *Buffer;\r | |
878ddf1f | 125 | \r |
126 | *ExitDataSize = 0;\r | |
127 | *ExitData = NULL;\r | |
128 | \r | |
129 | //\r | |
130 | // Notes: put EFI64 ROM Shadow Solution\r | |
131 | //\r | |
132 | EFI64_SHADOW_ALL_LEGACY_ROM ();\r | |
133 | \r | |
134 | //\r | |
135 | // Notes: this code can be remove after the s3 script table\r | |
136 | // hook on the event EFI_EVENT_SIGNAL_READY_TO_BOOT or\r | |
137 | // EFI_EVENT_SIGNAL_LEGACY_BOOT\r | |
138 | //\r | |
139 | Status = gBS->LocateProtocol (&gEfiAcpiS3SaveProtocolGuid, NULL, &AcpiS3Save);\r | |
140 | if (!EFI_ERROR (Status)) {\r | |
141 | AcpiS3Save->S3Save (AcpiS3Save, NULL);\r | |
142 | }\r | |
143 | //\r | |
144 | // If it's Device Path that starts with a hard drive path,\r | |
145 | // this routine will do the booting.\r | |
146 | //\r | |
147 | Status = BdsBootByDiskSignatureAndPartition (\r | |
148 | Option,\r | |
149 | (HARDDRIVE_DEVICE_PATH *) DevicePath,\r | |
150 | Option->LoadOptionsSize,\r | |
151 | Option->LoadOptions,\r | |
152 | ExitDataSize,\r | |
153 | ExitData\r | |
154 | );\r | |
155 | if (!EFI_ERROR (Status)) {\r | |
156 | //\r | |
157 | // If we found a disk signature and partition device path return success\r | |
158 | //\r | |
159 | return EFI_SUCCESS;\r | |
160 | }\r | |
72b695f3 | 161 | //\r |
162 | // Signal the EFI_EVENT_SIGNAL_READY_TO_BOOT event\r | |
163 | //\r | |
878ddf1f | 164 | EfiSignalEventReadyToBoot ();\r |
72b695f3 | 165 | \r |
878ddf1f | 166 | //\r |
167 | // Set Boot Current\r | |
168 | //\r | |
169 | gRT->SetVariable (\r | |
170 | L"BootCurrent",\r | |
171 | &gEfiGlobalVariableGuid,\r | |
172 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
173 | sizeof (UINT16),\r | |
174 | &Option->BootCurrent\r | |
175 | );\r | |
176 | \r | |
177 | if ((DevicePathType (Option->DevicePath) == BBS_DEVICE_PATH) &&\r | |
178 | (DevicePathSubType (Option->DevicePath) == BBS_BBS_DP)\r | |
179 | ) {\r | |
180 | //\r | |
181 | // Check to see if we should legacy BOOT. If yes then do the legacy boot\r | |
182 | //\r | |
183 | return BdsLibDoLegacyBoot (Option);\r | |
184 | }\r | |
185 | \r | |
186 | DEBUG ((EFI_D_INFO | EFI_D_LOAD, "Booting EFI 1.1 way %S\n", Option->Description));\r | |
187 | \r | |
188 | Status = gBS->LoadImage (\r | |
189 | TRUE,\r | |
190 | mBdsImageHandle,\r | |
191 | DevicePath,\r | |
192 | NULL,\r | |
193 | 0,\r | |
194 | &ImageHandle\r | |
195 | );\r | |
196 | \r | |
197 | //\r | |
198 | // If we didn't find an image, we may need to load the default\r | |
199 | // boot behavior for the device.\r | |
200 | //\r | |
201 | if (EFI_ERROR (Status)) {\r | |
202 | //\r | |
203 | // Find a Simple File System protocol on the device path. If the remaining\r | |
204 | // device path is set to end then no Files are being specified, so try\r | |
205 | // the removable media file name.\r | |
206 | //\r | |
207 | TempDevicePath = DevicePath;\r | |
208 | Status = gBS->LocateDevicePath (\r | |
209 | &gEfiSimpleFileSystemProtocolGuid,\r | |
210 | &TempDevicePath,\r | |
211 | &Handle\r | |
212 | );\r | |
213 | if (!EFI_ERROR (Status) && IsDevicePathEnd (TempDevicePath)) {\r | |
214 | FilePath = FileDevicePath (Handle, EFI_REMOVABLE_MEDIA_FILE_NAME);\r | |
215 | if (FilePath) {\r | |
c587fa4b | 216 | //\r |
217 | // Issue a dummy read to the device to check for media change.\r | |
218 | // When the removable media is changed, any Block IO read/write will\r | |
219 | // cause the BlockIo protocol be reinstalled and EFI_MEDIA_CHANGED is\r | |
220 | // returned. After the Block IO protocol is reinstalled, subsequent\r | |
221 | // Block IO read/write will success.\r | |
222 | //\r | |
223 | Status = gBS->HandleProtocol (\r | |
224 | Handle,\r | |
225 | &gEfiBlockIoProtocolGuid,\r | |
226 | (VOID **) &BlkIo\r | |
227 | );\r | |
228 | if (!EFI_ERROR (Status)) {\r | |
229 | Buffer = AllocatePool (BlkIo->Media->BlockSize);\r | |
230 | if (Buffer != NULL) {\r | |
231 | BlkIo->ReadBlocks (\r | |
232 | BlkIo,\r | |
233 | BlkIo->Media->MediaId,\r | |
234 | 0,\r | |
235 | BlkIo->Media->BlockSize,\r | |
236 | Buffer\r | |
237 | );\r | |
238 | gBS->FreePool (Buffer);\r | |
239 | }\r | |
240 | }\r | |
241 | \r | |
878ddf1f | 242 | Status = gBS->LoadImage (\r |
243 | TRUE,\r | |
244 | mBdsImageHandle,\r | |
245 | FilePath,\r | |
246 | NULL,\r | |
247 | 0,\r | |
248 | &ImageHandle\r | |
249 | );\r | |
250 | if (EFI_ERROR (Status)) {\r | |
251 | //\r | |
252 | // The DevicePath failed, and it's not a valid\r | |
253 | // removable media device.\r | |
254 | //\r | |
255 | goto Done;\r | |
256 | }\r | |
257 | }\r | |
258 | } else {\r | |
259 | Status = EFI_NOT_FOUND;\r | |
260 | }\r | |
261 | }\r | |
262 | \r | |
263 | if (EFI_ERROR (Status)) {\r | |
264 | //\r | |
265 | // It there is any error from the Boot attempt exit now.\r | |
266 | //\r | |
267 | goto Done;\r | |
268 | }\r | |
269 | //\r | |
270 | // Provide the image with it's load options\r | |
271 | //\r | |
272 | Status = gBS->HandleProtocol (ImageHandle, &gEfiLoadedImageProtocolGuid, &ImageInfo);\r | |
273 | ASSERT_EFI_ERROR (Status);\r | |
274 | \r | |
275 | if (Option->LoadOptionsSize != 0) {\r | |
276 | ImageInfo->LoadOptionsSize = Option->LoadOptionsSize;\r | |
277 | ImageInfo->LoadOptions = Option->LoadOptions;\r | |
278 | }\r | |
279 | //\r | |
280 | // Before calling the image, enable the Watchdog Timer for\r | |
281 | // the 5 Minute period\r | |
282 | //\r | |
283 | gBS->SetWatchdogTimer (5 * 60, 0x0000, 0x00, NULL);\r | |
284 | \r | |
285 | Status = gBS->StartImage (ImageHandle, ExitDataSize, ExitData);\r | |
286 | DEBUG ((EFI_D_INFO | EFI_D_LOAD, "Image Return Status = %r\n", Status));\r | |
287 | \r | |
288 | //\r | |
289 | // Clear the Watchdog Timer after the image returns\r | |
290 | //\r | |
291 | gBS->SetWatchdogTimer (0x0000, 0x0000, 0x0000, NULL);\r | |
292 | \r | |
293 | Done:\r | |
294 | //\r | |
295 | // Clear Boot Current\r | |
296 | //\r | |
297 | gRT->SetVariable (\r | |
298 | L"BootCurrent",\r | |
299 | &gEfiGlobalVariableGuid,\r | |
300 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
301 | 0,\r | |
302 | &Option->BootCurrent\r | |
303 | );\r | |
304 | \r | |
305 | return Status;\r | |
306 | }\r | |
307 | \r | |
308 | EFI_STATUS\r | |
309 | BdsBootByDiskSignatureAndPartition (\r | |
310 | IN BDS_COMMON_OPTION * Option,\r | |
311 | IN HARDDRIVE_DEVICE_PATH * HardDriveDevicePath,\r | |
312 | IN UINT32 LoadOptionsSize,\r | |
313 | IN VOID *LoadOptions,\r | |
314 | OUT UINTN *ExitDataSize,\r | |
315 | OUT CHAR16 **ExitData OPTIONAL\r | |
316 | )\r | |
317 | /*++\r | |
318 | \r | |
319 | Routine Description:\r | |
320 | \r | |
321 | Check to see if a hard ware device path was passed in. If it was then search\r | |
322 | all the block IO devices for the passed in hard drive device path. \r | |
323 | \r | |
324 | Arguments:\r | |
325 | \r | |
326 | Option - The current processing boot option.\r | |
327 | \r | |
328 | HardDriveDevicePath - EFI Device Path to boot, if it starts with a hard\r | |
329 | drive device path.\r | |
330 | \r | |
331 | LoadOptionsSize - Passed into gBS->StartImage ()\r | |
332 | via the loaded image protocol.\r | |
333 | \r | |
334 | LoadOptions - Passed into gBS->StartImage ()\r | |
335 | via the loaded image protocol.\r | |
336 | \r | |
337 | ExitDataSize - returned directly from gBS->StartImage ()\r | |
338 | \r | |
339 | ExitData - returned directly from gBS->StartImage ()\r | |
340 | \r | |
341 | Returns:\r | |
342 | \r | |
343 | EFI_SUCCESS - Status from gBS->StartImage (),\r | |
344 | or BootByDiskSignatureAndPartition ()\r | |
345 | \r | |
346 | EFI_NOT_FOUND - If the Device Path is not found in the system\r | |
347 | \r | |
348 | --*/\r | |
349 | {\r | |
350 | EFI_STATUS Status;\r | |
351 | UINTN BlockIoHandleCount;\r | |
352 | EFI_HANDLE *BlockIoBuffer;\r | |
353 | EFI_DEVICE_PATH_PROTOCOL *BlockIoDevicePath;\r | |
354 | EFI_DEVICE_PATH_PROTOCOL *BlockIoHdDevicePath;\r | |
355 | HARDDRIVE_DEVICE_PATH *TmpHdPath;\r | |
356 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
357 | EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;\r | |
358 | UINTN Index;\r | |
359 | BOOLEAN DevicePathMatch;\r | |
360 | HARDDRIVE_DEVICE_PATH *TempPath;\r | |
361 | \r | |
362 | *ExitDataSize = 0;\r | |
363 | *ExitData = NULL;\r | |
364 | \r | |
365 | if ( !((DevicePathType (&HardDriveDevicePath->Header) == MEDIA_DEVICE_PATH) &&\r | |
366 | (DevicePathSubType (&HardDriveDevicePath->Header) == MEDIA_HARDDRIVE_DP))\r | |
367 | ) {\r | |
368 | //\r | |
369 | // If the HardDriveDevicePath does not start with a Hard Drive Device Path\r | |
370 | // exit.\r | |
371 | //\r | |
372 | return EFI_NOT_FOUND;\r | |
373 | }\r | |
374 | //\r | |
375 | // The boot device have already been connected\r | |
376 | //\r | |
377 | Status = gBS->LocateHandleBuffer (ByProtocol, &gEfiBlockIoProtocolGuid, NULL, &BlockIoHandleCount, &BlockIoBuffer);\r | |
378 | if (EFI_ERROR (Status) || BlockIoHandleCount == 0) {\r | |
379 | //\r | |
380 | // If there was an error or there are no device handles that support\r | |
381 | // the BLOCK_IO Protocol, then return.\r | |
382 | //\r | |
383 | return EFI_NOT_FOUND;\r | |
384 | }\r | |
385 | //\r | |
386 | // Loop through all the device handles that support the BLOCK_IO Protocol\r | |
387 | //\r | |
388 | for (Index = 0; Index < BlockIoHandleCount; Index++) {\r | |
389 | \r | |
390 | Status = gBS->HandleProtocol (BlockIoBuffer[Index], &gEfiDevicePathProtocolGuid, (VOID *) &BlockIoDevicePath);\r | |
391 | if (EFI_ERROR (Status) || BlockIoDevicePath == NULL) {\r | |
392 | continue;\r | |
393 | }\r | |
394 | //\r | |
395 | // Make PreviousDevicePath == the device path node before the end node\r | |
396 | //\r | |
397 | DevicePath = BlockIoDevicePath;\r | |
398 | BlockIoHdDevicePath = NULL;\r | |
399 | \r | |
400 | //\r | |
401 | // find HardDriver device path node\r | |
402 | //\r | |
403 | while (!IsDevicePathEnd (DevicePath)) {\r | |
404 | if ((DevicePathType (DevicePath) == MEDIA_DEVICE_PATH) && \r | |
405 | (DevicePathSubType (DevicePath) == MEDIA_HARDDRIVE_DP)\r | |
406 | ) {\r | |
407 | BlockIoHdDevicePath = DevicePath;\r | |
408 | break;\r | |
409 | }\r | |
410 | \r | |
411 | DevicePath = NextDevicePathNode (DevicePath);\r | |
412 | }\r | |
413 | \r | |
414 | if (BlockIoHdDevicePath == NULL) {\r | |
415 | continue;\r | |
416 | }\r | |
417 | //\r | |
418 | // See if the harddrive device path in blockio matches the orig Hard Drive Node\r | |
419 | //\r | |
420 | DevicePathMatch = FALSE;\r | |
421 | \r | |
422 | TmpHdPath = (HARDDRIVE_DEVICE_PATH *) BlockIoHdDevicePath;\r | |
423 | TempPath = (HARDDRIVE_DEVICE_PATH *) BdsLibUnpackDevicePath ((EFI_DEVICE_PATH_PROTOCOL *) HardDriveDevicePath);\r | |
424 | \r | |
425 | //\r | |
426 | // Only several fields will be checked. NOT whole NODE\r | |
427 | //\r | |
428 | if ( TmpHdPath->PartitionNumber == TempPath->PartitionNumber &&\r | |
429 | TmpHdPath->MBRType == TempPath->MBRType &&\r | |
430 | TmpHdPath->SignatureType == TempPath->SignatureType &&\r | |
431 | CompareGuid ((EFI_GUID *) TmpHdPath->Signature, (EFI_GUID *) TempPath->Signature)) {\r | |
432 | //\r | |
433 | // Get the matched device path\r | |
434 | //\r | |
435 | DevicePathMatch = TRUE;\r | |
436 | }\r | |
437 | //\r | |
438 | // Only do the boot, when devicepath match\r | |
439 | //\r | |
440 | if (DevicePathMatch) {\r | |
441 | //\r | |
442 | // Combine the Block IO and Hard Drive Device path together and try\r | |
443 | // to boot from it.\r | |
444 | //\r | |
445 | DevicePath = NextDevicePathNode ((EFI_DEVICE_PATH_PROTOCOL *) HardDriveDevicePath);\r | |
446 | NewDevicePath = AppendDevicePath (BlockIoDevicePath, DevicePath);\r | |
447 | \r | |
448 | //\r | |
449 | // Recursive boot with new device path\r | |
450 | //\r | |
451 | Status = BdsLibBootViaBootOption (Option, NewDevicePath, ExitDataSize, ExitData);\r | |
452 | if (!EFI_ERROR (Status)) {\r | |
453 | break;\r | |
454 | }\r | |
455 | }\r | |
456 | }\r | |
457 | \r | |
458 | gBS->FreePool (BlockIoBuffer);\r | |
459 | return Status;\r | |
460 | }\r | |
461 | \r | |
c587fa4b | 462 | EFI_STATUS\r |
463 | BdsLibDeleteOptionFromHandle (\r | |
464 | IN EFI_HANDLE Handle\r | |
465 | )\r | |
466 | /*++\r | |
467 | \r | |
468 | Routine Description:\r | |
469 | \r | |
470 | Delete the boot option associated with the handle passed in\r | |
471 | \r | |
472 | Arguments:\r | |
473 | \r | |
474 | Handle - The handle which present the device path to create boot option\r | |
475 | \r | |
476 | Returns:\r | |
477 | \r | |
478 | EFI_SUCCESS - Delete the boot option success\r | |
479 | \r | |
480 | EFI_NOT_FOUND - If the Device Path is not found in the system\r | |
481 | \r | |
482 | EFI_OUT_OF_RESOURCES - Lack of memory resource\r | |
483 | \r | |
484 | Other - Error return value from SetVariable()\r | |
485 | \r | |
486 | --*/\r | |
487 | {\r | |
488 | UINT16 *BootOrder;\r | |
489 | UINT8 *BootOptionVar;\r | |
490 | UINTN BootOrderSize;\r | |
491 | UINTN BootOptionSize;\r | |
492 | EFI_STATUS Status;\r | |
493 | UINTN Index;\r | |
494 | UINT16 BootOption[BOOT_OPTION_MAX_CHAR];\r | |
495 | UINTN DevicePathSize;\r | |
496 | UINTN OptionDevicePathSize;\r | |
497 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
498 | EFI_DEVICE_PATH_PROTOCOL *OptionDevicePath;\r | |
499 | UINT8 *TempPtr;\r | |
500 | CHAR16 *Description;\r | |
501 | \r | |
502 | Status = EFI_SUCCESS;\r | |
503 | BootOrder = NULL;\r | |
504 | BootOrderSize = 0;\r | |
505 | \r | |
506 | BootOrder = BdsLibGetVariableAndSize (\r | |
507 | L"BootOrder",\r | |
508 | &gEfiGlobalVariableGuid,\r | |
509 | &BootOrderSize\r | |
510 | );\r | |
511 | if (NULL == BootOrder) {\r | |
512 | return EFI_NOT_FOUND;\r | |
513 | }\r | |
514 | \r | |
515 | DevicePath = DevicePathFromHandle (Handle);\r | |
516 | if (DevicePath == NULL) {\r | |
517 | return EFI_NOT_FOUND;\r | |
518 | }\r | |
519 | DevicePathSize = GetDevicePathSize (DevicePath);\r | |
520 | \r | |
521 | Index = 0;\r | |
522 | while (Index < BootOrderSize / sizeof (UINT16)) {\r | |
523 | UnicodeSPrint (BootOption, sizeof (BootOption), L"Boot%04x", BootOrder[Index]);\r | |
524 | BootOptionVar = BdsLibGetVariableAndSize (\r | |
525 | BootOption,\r | |
526 | &gEfiGlobalVariableGuid,\r | |
527 | &BootOptionSize\r | |
528 | );\r | |
529 | if (NULL == BootOptionVar) {\r | |
530 | gBS->FreePool (BootOrder);\r | |
531 | return EFI_OUT_OF_RESOURCES;\r | |
532 | }\r | |
533 | \r | |
534 | TempPtr = BootOptionVar;\r | |
535 | TempPtr += sizeof (UINT32) + sizeof (UINT16);\r | |
536 | Description = (CHAR16 *) TempPtr;\r | |
537 | TempPtr += StrSize ((CHAR16 *) TempPtr);\r | |
538 | OptionDevicePath = (EFI_DEVICE_PATH_PROTOCOL *) TempPtr;\r | |
539 | OptionDevicePathSize = GetDevicePathSize (OptionDevicePath);\r | |
540 | \r | |
541 | //\r | |
542 | // Check whether the device path match\r | |
543 | //\r | |
544 | if ((OptionDevicePathSize == DevicePathSize) &&\r | |
545 | (CompareMem (DevicePath, OptionDevicePath, DevicePathSize) == 0)) {\r | |
546 | BdsDeleteBootOption (BootOrder[Index], BootOrder, &BootOrderSize);\r | |
547 | gBS->FreePool (BootOptionVar);\r | |
548 | break;\r | |
549 | }\r | |
550 | \r | |
551 | gBS->FreePool (BootOptionVar);\r | |
552 | Index++;\r | |
553 | }\r | |
554 | \r | |
555 | Status = gRT->SetVariable (\r | |
556 | L"BootOrder",\r | |
557 | &gEfiGlobalVariableGuid,\r | |
558 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
559 | BootOrderSize,\r | |
560 | BootOrder\r | |
561 | );\r | |
562 | \r | |
563 | gBS->FreePool (BootOrder);\r | |
564 | \r | |
565 | return Status;\r | |
566 | }\r | |
567 | \r | |
568 | EFI_STATUS\r | |
569 | BdsDeleteAllInvalidEfiBootOption (\r | |
570 | VOID\r | |
571 | )\r | |
572 | /*++\r | |
573 | \r | |
574 | Routine Description:\r | |
575 | \r | |
576 | Delete all invalid EFI boot options. The probable invalid boot option could\r | |
577 | be Removable media or Network boot device.\r | |
578 | \r | |
579 | Arguments:\r | |
580 | \r | |
581 | VOID\r | |
582 | \r | |
583 | Returns:\r | |
584 | \r | |
585 | EFI_SUCCESS - Delete all invalid boot option success\r | |
586 | \r | |
587 | EFI_NOT_FOUND - Variable "BootOrder" is not found\r | |
588 | \r | |
589 | EFI_OUT_OF_RESOURCES - Lack of memory resource\r | |
590 | \r | |
591 | Other - Error return value from SetVariable()\r | |
592 | \r | |
593 | --*/\r | |
594 | {\r | |
595 | UINT16 *BootOrder;\r | |
596 | UINT8 *BootOptionVar;\r | |
597 | UINTN BootOrderSize;\r | |
598 | UINTN BootOptionSize;\r | |
599 | EFI_STATUS Status;\r | |
600 | UINTN Index;\r | |
601 | UINTN Index2;\r | |
602 | UINT16 BootOption[BOOT_OPTION_MAX_CHAR];\r | |
603 | UINTN OptionDevicePathSize;\r | |
604 | EFI_DEVICE_PATH_PROTOCOL *TempDevicePath;\r | |
605 | EFI_DEVICE_PATH_PROTOCOL *LastDeviceNode;\r | |
606 | EFI_DEVICE_PATH_PROTOCOL *OptionDevicePath;\r | |
607 | UINT8 *TempPtr;\r | |
608 | CHAR16 *Description;\r | |
609 | EFI_HANDLE Handle;\r | |
610 | BOOLEAN NeedDelete;\r | |
611 | \r | |
612 | Status = EFI_SUCCESS;\r | |
613 | BootOrder = NULL;\r | |
614 | BootOrderSize = 0;\r | |
615 | \r | |
616 | BootOrder = BdsLibGetVariableAndSize (\r | |
617 | L"BootOrder",\r | |
618 | &gEfiGlobalVariableGuid,\r | |
619 | &BootOrderSize\r | |
620 | );\r | |
621 | if (NULL == BootOrder) {\r | |
622 | return EFI_NOT_FOUND;\r | |
623 | }\r | |
624 | \r | |
625 | Index = 0;\r | |
626 | while (Index < BootOrderSize / sizeof (UINT16)) {\r | |
627 | UnicodeSPrint (BootOption, sizeof (BootOption), L"Boot%04x", BootOrder[Index]);\r | |
628 | BootOptionVar = BdsLibGetVariableAndSize (\r | |
629 | BootOption,\r | |
630 | &gEfiGlobalVariableGuid,\r | |
631 | &BootOptionSize\r | |
632 | );\r | |
633 | if (NULL == BootOptionVar) {\r | |
634 | gBS->FreePool (BootOrder);\r | |
635 | return EFI_OUT_OF_RESOURCES;\r | |
636 | }\r | |
637 | \r | |
638 | TempPtr = BootOptionVar;\r | |
639 | TempPtr += sizeof (UINT32) + sizeof (UINT16);\r | |
640 | Description = (CHAR16 *) TempPtr;\r | |
641 | TempPtr += StrSize ((CHAR16 *) TempPtr);\r | |
642 | OptionDevicePath = (EFI_DEVICE_PATH_PROTOCOL *) TempPtr;\r | |
643 | OptionDevicePathSize = GetDevicePathSize (OptionDevicePath);\r | |
644 | \r | |
645 | //\r | |
646 | // Skip legacy boot option (BBS boot device)\r | |
647 | //\r | |
648 | if ((DevicePathType (OptionDevicePath) == BBS_DEVICE_PATH) &&\r | |
649 | (DevicePathSubType (OptionDevicePath) == BBS_BBS_DP)) {\r | |
650 | gBS->FreePool (BootOptionVar);\r | |
651 | Index++;\r | |
652 | continue;\r | |
653 | }\r | |
654 | \r | |
655 | TempDevicePath = OptionDevicePath;\r | |
656 | LastDeviceNode = OptionDevicePath;\r | |
657 | while (!EfiIsDevicePathEnd (TempDevicePath)) {\r | |
658 | LastDeviceNode = TempDevicePath;\r | |
659 | TempDevicePath = EfiNextDevicePathNode (TempDevicePath);\r | |
660 | }\r | |
661 | //\r | |
662 | // Skip the boot option that point to a file, since the device path in \r | |
663 | // removable media boot option doesn't contains a file name.\r | |
664 | //\r | |
665 | if (((DevicePathType (LastDeviceNode) == MEDIA_DEVICE_PATH) &&\r | |
666 | (DevicePathSubType (LastDeviceNode) == MEDIA_FILEPATH_DP)) ||\r | |
667 | //\r | |
668 | // Skip boot option for internal Shell, it's always valid\r | |
669 | //\r | |
670 | (EfiGetNameGuidFromFwVolDevicePathNode ((MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *) LastDeviceNode) != NULL)) {\r | |
671 | gBS->FreePool (BootOptionVar);\r | |
672 | Index++;\r | |
673 | continue;\r | |
674 | }\r | |
675 | \r | |
676 | NeedDelete = TRUE;\r | |
677 | //\r | |
678 | // Check if it's a valid boot option for removable media\r | |
679 | //\r | |
680 | TempDevicePath = OptionDevicePath;\r | |
681 | Status = gBS->LocateDevicePath (\r | |
682 | &gEfiSimpleFileSystemProtocolGuid,\r | |
683 | &TempDevicePath,\r | |
684 | &Handle\r | |
685 | );\r | |
686 | if (!EFI_ERROR (Status)) {\r | |
687 | NeedDelete = FALSE;\r | |
688 | }\r | |
689 | //\r | |
690 | // Check if it's a valid boot option for network boot device\r | |
691 | //\r | |
692 | TempDevicePath = OptionDevicePath;\r | |
693 | Status = gBS->LocateDevicePath (\r | |
694 | &gEfiLoadFileProtocolGuid,\r | |
695 | &TempDevicePath,\r | |
696 | &Handle\r | |
697 | );\r | |
698 | if (!EFI_ERROR (Status)) {\r | |
699 | NeedDelete = FALSE;\r | |
700 | }\r | |
701 | \r | |
702 | if (NeedDelete) {\r | |
703 | //\r | |
704 | // Delete this invalid boot option "Boot####"\r | |
705 | //\r | |
706 | Status = gRT->SetVariable (\r | |
707 | BootOption,\r | |
708 | &gEfiGlobalVariableGuid,\r | |
709 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
710 | 0,\r | |
711 | NULL\r | |
712 | );\r | |
713 | //\r | |
714 | // Mark this boot option in boot order as deleted\r | |
715 | //\r | |
716 | BootOrder[Index] = 0xffff;\r | |
717 | }\r | |
718 | \r | |
719 | gBS->FreePool (BootOptionVar);\r | |
720 | Index++;\r | |
721 | }\r | |
722 | \r | |
723 | //\r | |
724 | // Adjust boot order array\r | |
725 | //\r | |
726 | Index2 = 0;\r | |
727 | for (Index = 0; Index < BootOrderSize / sizeof (UINT16); Index++) {\r | |
728 | if (BootOrder[Index] != 0xffff) {\r | |
729 | BootOrder[Index2] = BootOrder[Index];\r | |
730 | Index2 ++;\r | |
731 | }\r | |
732 | }\r | |
733 | Status = gRT->SetVariable (\r | |
734 | L"BootOrder",\r | |
735 | &gEfiGlobalVariableGuid,\r | |
736 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
737 | Index2 * sizeof (UINT16),\r | |
738 | BootOrder\r | |
739 | );\r | |
740 | \r | |
741 | gBS->FreePool (BootOrder);\r | |
742 | \r | |
743 | return Status;\r | |
744 | }\r | |
745 | \r | |
878ddf1f | 746 | EFI_STATUS\r |
747 | BdsLibEnumerateAllBootOption (\r | |
748 | IN OUT LIST_ENTRY *BdsBootOptionList\r | |
749 | )\r | |
750 | /*++\r | |
751 | \r | |
752 | Routine Description:\r | |
753 | \r | |
754 | This function will enumerate all possible boot device in the system,\r | |
755 | it will only excute once of every boot.\r | |
756 | \r | |
757 | Arguments:\r | |
758 | \r | |
759 | BdsBootOptionList - The header of the link list which indexed all\r | |
760 | current boot options\r | |
761 | \r | |
762 | Returns:\r | |
763 | \r | |
764 | EFI_SUCCESS - Finished all the boot device enumerate and create\r | |
765 | the boot option base on that boot device\r | |
766 | \r | |
767 | --*/\r | |
768 | {\r | |
769 | EFI_STATUS Status;\r | |
770 | UINT16 BootOptionNumber;\r | |
771 | UINTN NumberFileSystemHandles;\r | |
772 | EFI_HANDLE *FileSystemHandles;\r | |
878ddf1f | 773 | EFI_BLOCK_IO_PROTOCOL *BlkIo;\r |
774 | UINTN Index;\r | |
878ddf1f | 775 | UINTN NumberLoadFileHandles;\r |
776 | EFI_HANDLE *LoadFileHandles;\r | |
777 | VOID *ProtocolInstance;\r | |
778 | EFI_FIRMWARE_VOLUME_PROTOCOL *Fv;\r | |
779 | UINTN FvHandleCount;\r | |
780 | EFI_HANDLE *FvHandleBuffer;\r | |
781 | EFI_FV_FILETYPE Type;\r | |
782 | UINTN Size;\r | |
783 | EFI_FV_FILE_ATTRIBUTES Attributes;\r | |
784 | UINT32 AuthenticationStatus;\r | |
c587fa4b | 785 | EFI_DEVICE_PATH_PROTOCOL *FilePath;\r |
786 | EFI_HANDLE ImageHandle;\r | |
787 | EFI_LOADED_IMAGE_PROTOCOL *ImageInfo;\r | |
788 | BOOLEAN NeedDelete;\r | |
878ddf1f | 789 | \r |
790 | BootOptionNumber = 0;\r | |
791 | \r | |
792 | //\r | |
793 | // If the boot device enumerate happened, just get the boot\r | |
794 | // device from the boot order variable\r | |
795 | //\r | |
796 | if (mEnumBootDevice) {\r | |
797 | BdsLibBuildOptionFromVar (BdsBootOptionList, L"BootOrder");\r | |
798 | return EFI_SUCCESS;\r | |
799 | }\r | |
800 | //\r | |
801 | // Notes: this dirty code is to get the legacy boot option from the\r | |
802 | // BBS table and create to variable as the EFI boot option, it should\r | |
803 | // be removed after the CSM can provide legacy boot option directly\r | |
804 | //\r | |
805 | REFRESH_LEGACY_BOOT_OPTIONS;\r | |
806 | \r | |
807 | //\r | |
c587fa4b | 808 | // Delete invalid boot option\r |
878ddf1f | 809 | //\r |
c587fa4b | 810 | BdsDeleteAllInvalidEfiBootOption ();\r |
878ddf1f | 811 | //\r |
c587fa4b | 812 | // Parse removable media\r |
878ddf1f | 813 | //\r |
814 | gBS->LocateHandleBuffer (\r | |
815 | ByProtocol,\r | |
816 | &gEfiSimpleFileSystemProtocolGuid,\r | |
817 | NULL,\r | |
818 | &NumberFileSystemHandles,\r | |
819 | &FileSystemHandles\r | |
820 | );\r | |
821 | for (Index = 0; Index < NumberFileSystemHandles; Index++) {\r | |
822 | Status = gBS->HandleProtocol (\r | |
823 | FileSystemHandles[Index],\r | |
824 | &gEfiBlockIoProtocolGuid,\r | |
825 | (VOID **) &BlkIo\r | |
826 | );\r | |
827 | if (!EFI_ERROR (Status)) {\r | |
c587fa4b | 828 | if (!BlkIo->Media->RemovableMedia) {\r |
878ddf1f | 829 | //\r |
830 | // If the file system handle supports a BlkIo protocol,\r | |
831 | // skip the removable media devices\r | |
832 | //\r | |
833 | continue;\r | |
834 | }\r | |
835 | }\r | |
836 | \r | |
c587fa4b | 837 | //\r |
838 | // Do the removable Media thing. \EFI\BOOT\boot{machinename}.EFI\r | |
839 | // machinename is ia32, ia64, x64, ...\r | |
840 | //\r | |
841 | FilePath = FileDevicePath (FileSystemHandles[Index], EFI_REMOVABLE_MEDIA_FILE_NAME);\r | |
842 | NeedDelete = TRUE;\r | |
843 | Status = gBS->LoadImage (\r | |
844 | TRUE,\r | |
845 | mBdsImageHandle,\r | |
846 | FilePath,\r | |
847 | NULL,\r | |
848 | 0,\r | |
849 | &ImageHandle\r | |
850 | );\r | |
851 | if (!EFI_ERROR(Status)) {\r | |
852 | //\r | |
853 | // Verify the image is a EFI application (and not a driver)\r | |
854 | //\r | |
855 | Status = gBS->HandleProtocol (ImageHandle, &gEfiLoadedImageProtocolGuid, (VOID **) &ImageInfo);\r | |
856 | ASSERT (!EFI_ERROR(Status));\r | |
857 | \r | |
858 | if (ImageInfo->ImageCodeType == EfiLoaderCode) {\r | |
859 | NeedDelete = FALSE;\r | |
860 | }\r | |
861 | }\r | |
862 | \r | |
863 | if (NeedDelete) {\r | |
878ddf1f | 864 | //\r |
c587fa4b | 865 | // No such file or the file is not a EFI application, delete this boot option\r |
878ddf1f | 866 | //\r |
c587fa4b | 867 | BdsLibDeleteOptionFromHandle (FileSystemHandles[Index]);\r |
868 | } else {\r | |
878ddf1f | 869 | BdsLibBuildOptionFromHandle (FileSystemHandles[Index], BdsBootOptionList);\r |
870 | BootOptionNumber++;\r | |
871 | }\r | |
872 | }\r | |
873 | \r | |
874 | if (NumberFileSystemHandles) {\r | |
875 | gBS->FreePool (FileSystemHandles);\r | |
876 | }\r | |
877 | //\r | |
878 | // Parse Network Boot Device\r | |
879 | //\r | |
880 | gBS->LocateHandleBuffer (\r | |
881 | ByProtocol,\r | |
882 | &gEfiSimpleNetworkProtocolGuid,\r | |
883 | NULL,\r | |
884 | &NumberLoadFileHandles,\r | |
885 | &LoadFileHandles\r | |
886 | );\r | |
887 | for (Index = 0; Index < NumberLoadFileHandles; Index++) {\r | |
888 | Status = gBS->HandleProtocol (\r | |
889 | LoadFileHandles[Index],\r | |
890 | &gEfiLoadFileProtocolGuid,\r | |
891 | (VOID **) &ProtocolInstance\r | |
892 | );\r | |
893 | if (EFI_ERROR (Status)) {\r | |
894 | continue;\r | |
895 | }\r | |
896 | \r | |
897 | BdsLibBuildOptionFromHandle (LoadFileHandles[Index], BdsBootOptionList);\r | |
898 | BootOptionNumber++;\r | |
899 | }\r | |
900 | \r | |
901 | if (NumberLoadFileHandles) {\r | |
902 | gBS->FreePool (LoadFileHandles);\r | |
903 | }\r | |
904 | //\r | |
905 | // Check if we have on flash shell\r | |
906 | //\r | |
907 | gBS->LocateHandleBuffer (\r | |
908 | ByProtocol,\r | |
909 | &gEfiFirmwareVolumeProtocolGuid,\r | |
910 | NULL,\r | |
911 | &FvHandleCount,\r | |
912 | &FvHandleBuffer\r | |
913 | );\r | |
914 | for (Index = 0; Index < FvHandleCount; Index++) {\r | |
915 | gBS->HandleProtocol (\r | |
916 | FvHandleBuffer[Index],\r | |
917 | &gEfiFirmwareVolumeProtocolGuid,\r | |
918 | (VOID **) &Fv\r | |
919 | );\r | |
920 | \r | |
921 | Status = Fv->ReadFile (\r | |
922 | Fv,\r | |
923 | &gEfiShellFileGuid,\r | |
924 | NULL,\r | |
925 | &Size,\r | |
926 | &Type,\r | |
927 | &Attributes,\r | |
928 | &AuthenticationStatus\r | |
929 | );\r | |
930 | if (EFI_ERROR (Status)) {\r | |
931 | //\r | |
932 | // Skip if no shell file in the FV\r | |
933 | //\r | |
934 | continue;\r | |
935 | }\r | |
936 | //\r | |
937 | // Build the shell boot option\r | |
938 | //\r | |
939 | BdsLibBuildOptionFromShell (FvHandleBuffer[Index], BdsBootOptionList);\r | |
940 | BootOptionNumber++;\r | |
941 | }\r | |
942 | \r | |
943 | if (FvHandleCount) {\r | |
944 | gBS->FreePool (FvHandleBuffer);\r | |
945 | }\r | |
946 | //\r | |
947 | // Make sure every boot only have one time\r | |
948 | // boot device enumerate\r | |
949 | //\r | |
950 | BdsLibBuildOptionFromVar (BdsBootOptionList, L"BootOrder");\r | |
951 | mEnumBootDevice = TRUE;\r | |
952 | \r | |
953 | return EFI_SUCCESS;\r | |
954 | }\r | |
955 | \r | |
956 | VOID\r | |
957 | BdsLibBuildOptionFromHandle (\r | |
958 | IN EFI_HANDLE Handle,\r | |
959 | IN LIST_ENTRY *BdsBootOptionList\r | |
960 | )\r | |
961 | /*++\r | |
962 | \r | |
963 | Routine Description:\r | |
964 | \r | |
965 | Build the boot option with the handle parsed in\r | |
966 | \r | |
967 | Arguments:\r | |
968 | \r | |
969 | Handle - The handle which present the device path to create boot option\r | |
970 | \r | |
971 | BdsBootOptionList - The header of the link list which indexed all current\r | |
972 | boot options\r | |
973 | \r | |
974 | Returns:\r | |
975 | \r | |
976 | VOID\r | |
977 | \r | |
978 | --*/\r | |
979 | {\r | |
980 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
981 | CHAR16 *TempString;\r | |
982 | \r | |
983 | DevicePath = DevicePathFromHandle (Handle);\r | |
984 | TempString = DevicePathToStr (DevicePath);\r | |
985 | \r | |
986 | //\r | |
987 | // Create and register new boot option\r | |
988 | //\r | |
989 | BdsLibRegisterNewOption (BdsBootOptionList, DevicePath, TempString, L"BootOrder");\r | |
990 | }\r | |
991 | \r | |
992 | VOID\r | |
993 | BdsLibBuildOptionFromShell (\r | |
994 | IN EFI_HANDLE Handle,\r | |
995 | IN OUT LIST_ENTRY *BdsBootOptionList\r | |
996 | )\r | |
997 | /*++\r | |
998 | \r | |
999 | Routine Description:\r | |
1000 | \r | |
1001 | Build the on flash shell boot option with the handle parsed in\r | |
1002 | \r | |
1003 | Arguments:\r | |
1004 | \r | |
1005 | Handle - The handle which present the device path to create on flash shell\r | |
1006 | boot option\r | |
1007 | \r | |
1008 | BdsBootOptionList - The header of the link list which indexed all current\r | |
1009 | boot options\r | |
1010 | \r | |
1011 | Returns:\r | |
1012 | \r | |
1013 | None\r | |
1014 | \r | |
1015 | --*/\r | |
1016 | {\r | |
1017 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
1018 | MEDIA_FW_VOL_FILEPATH_DEVICE_PATH ShellNode;\r | |
1019 | \r | |
1020 | DevicePath = DevicePathFromHandle (Handle);\r | |
1021 | \r | |
1022 | //\r | |
1023 | // Build the shell device path\r | |
1024 | //\r | |
1025 | EfiInitializeFwVolDevicepathNode (&ShellNode, &gEfiShellFileGuid);\r | |
1026 | DevicePath = AppendDevicePathNode (DevicePath, (EFI_DEVICE_PATH_PROTOCOL *) &ShellNode);\r | |
1027 | \r | |
1028 | //\r | |
1029 | // Create and register the shell boot option\r | |
1030 | //\r | |
1031 | BdsLibRegisterNewOption (BdsBootOptionList, DevicePath, L"Internal EFI Shell", L"BootOrder");\r | |
1032 | \r | |
1033 | }\r | |
1034 | \r | |
1035 | VOID\r | |
1036 | BdsLibBootNext (\r | |
1037 | VOID\r | |
1038 | )\r | |
1039 | /*++\r | |
1040 | \r | |
1041 | Routine Description:\r | |
1042 | \r | |
1043 | Boot from the EFI1.1 spec defined "BootNext" variable\r | |
1044 | \r | |
1045 | Arguments:\r | |
1046 | \r | |
1047 | None\r | |
1048 | \r | |
1049 | Returns:\r | |
1050 | \r | |
1051 | None\r | |
1052 | \r | |
1053 | --*/\r | |
1054 | {\r | |
1055 | UINT16 *BootNext;\r | |
1056 | UINTN BootNextSize;\r | |
1057 | CHAR16 Buffer[20];\r | |
1058 | BDS_COMMON_OPTION *BootOption;\r | |
1059 | LIST_ENTRY TempList;\r | |
1060 | UINTN ExitDataSize;\r | |
1061 | CHAR16 *ExitData;\r | |
1062 | \r | |
1063 | //\r | |
1064 | // Init the boot option name buffer and temp link list\r | |
1065 | //\r | |
1066 | InitializeListHead (&TempList);\r | |
1067 | ZeroMem (Buffer, sizeof (Buffer));\r | |
1068 | \r | |
1069 | BootNext = BdsLibGetVariableAndSize (\r | |
1070 | L"BootNext",\r | |
1071 | &gEfiGlobalVariableGuid,\r | |
1072 | &BootNextSize\r | |
1073 | );\r | |
1074 | \r | |
1075 | //\r | |
1076 | // Clear the boot next variable first\r | |
1077 | //\r | |
1078 | if (BootNext != NULL) {\r | |
1079 | gRT->SetVariable (\r | |
1080 | L"BootNext",\r | |
1081 | &gEfiGlobalVariableGuid,\r | |
1082 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
1083 | 0,\r | |
1084 | BootNext\r | |
1085 | );\r | |
1086 | \r | |
1087 | //\r | |
1088 | // Start to build the boot option and try to boot\r | |
1089 | //\r | |
1090 | UnicodeSPrint (Buffer, sizeof (Buffer), L"Boot%04x", *BootNext);\r | |
1091 | BootOption = BdsLibVariableToOption (&TempList, Buffer);\r | |
1092 | BdsLibConnectDevicePath (BootOption->DevicePath);\r | |
1093 | BdsLibBootViaBootOption (BootOption, BootOption->DevicePath, &ExitDataSize, &ExitData);\r | |
1094 | }\r | |
1095 | \r | |
1096 | }\r |