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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 | BdsMisc.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Misc BDS library function\r | |
19 | \r | |
20 | --*/\r | |
21 | \r | |
22 | extern UINT16 gPlatformBootTimeOutDefault;\r | |
23 | \r | |
24 | UINT16\r | |
25 | BdsLibGetTimeout (\r | |
26 | VOID\r | |
27 | )\r | |
28 | /*++\r | |
29 | \r | |
30 | Routine Description:\r | |
31 | \r | |
32 | Return the default value for system Timeout variable.\r | |
33 | \r | |
34 | Arguments:\r | |
35 | \r | |
36 | None\r | |
37 | \r | |
38 | Returns:\r | |
39 | \r | |
40 | Timeout value.\r | |
41 | \r | |
42 | --*/\r | |
43 | {\r | |
44 | UINT16 Timeout;\r | |
45 | UINTN Size;\r | |
46 | EFI_STATUS Status;\r | |
47 | \r | |
48 | //\r | |
49 | // Return Timeout variable or 0xffff if no valid\r | |
50 | // Timeout variable exists.\r | |
51 | //\r | |
52 | Size = sizeof (UINT16);\r | |
53 | Status = gRT->GetVariable (L"Timeout", &gEfiGlobalVariableGuid, NULL, &Size, &Timeout);\r | |
54 | if (!EFI_ERROR (Status)) {\r | |
55 | return Timeout;\r | |
56 | }\r | |
57 | //\r | |
58 | // To make the current EFI Automatic-Test activity possible, just add\r | |
59 | // following code to make AutoBoot enabled when this variable is not\r | |
60 | // present.\r | |
61 | // This code should be removed later.\r | |
62 | //\r | |
63 | Timeout = gPlatformBootTimeOutDefault;\r | |
64 | \r | |
65 | //\r | |
66 | // Notes: Platform should set default variable if non exists on all error cases!!!\r | |
67 | //\r | |
68 | Status = gRT->SetVariable (\r | |
69 | L"Timeout",\r | |
70 | &gEfiGlobalVariableGuid,\r | |
71 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
72 | sizeof (UINT16),\r | |
73 | &Timeout\r | |
74 | );\r | |
75 | return Timeout;\r | |
76 | }\r | |
77 | \r | |
78 | VOID\r | |
79 | BdsLibLoadDrivers (\r | |
80 | IN LIST_ENTRY *BdsDriverLists\r | |
81 | )\r | |
82 | /*++\r | |
83 | \r | |
84 | Routine Description:\r | |
85 | \r | |
86 | The function will go through the driver optoin link list, load and start\r | |
87 | every driver the driver optoin device path point to.\r | |
88 | \r | |
89 | Arguments:\r | |
90 | \r | |
91 | BdsDriverLists - The header of the current driver option link list\r | |
92 | \r | |
93 | Returns:\r | |
94 | \r | |
95 | None\r | |
96 | \r | |
97 | --*/\r | |
98 | {\r | |
99 | EFI_STATUS Status;\r | |
100 | LIST_ENTRY *Link;\r | |
101 | BDS_COMMON_OPTION *Option;\r | |
102 | EFI_HANDLE ImageHandle;\r | |
103 | EFI_LOADED_IMAGE_PROTOCOL *ImageInfo;\r | |
104 | UINTN ExitDataSize;\r | |
105 | CHAR16 *ExitData;\r | |
106 | BOOLEAN ReconnectAll;\r | |
107 | \r | |
108 | ReconnectAll = FALSE;\r | |
109 | \r | |
110 | //\r | |
111 | // Process the driver option\r | |
112 | //\r | |
113 | for (Link = BdsDriverLists->ForwardLink; Link != BdsDriverLists; Link = Link->ForwardLink) {\r | |
114 | Option = CR (Link, BDS_COMMON_OPTION, Link, BDS_LOAD_OPTION_SIGNATURE);\r | |
115 | //\r | |
116 | // If a load option is not marked as LOAD_OPTION_ACTIVE,\r | |
117 | // the boot manager will not automatically load the option.\r | |
118 | //\r | |
119 | if (!IS_LOAD_OPTION_TYPE (Option->Attribute, LOAD_OPTION_ACTIVE)) {\r | |
120 | continue;\r | |
121 | }\r | |
122 | //\r | |
123 | // If a driver load option is marked as LOAD_OPTION_FORCE_RECONNECT,\r | |
124 | // then all of the EFI drivers in the system will be disconnected and\r | |
125 | // reconnected after the last driver load option is processed.\r | |
126 | //\r | |
127 | if (IS_LOAD_OPTION_TYPE (Option->Attribute, LOAD_OPTION_FORCE_RECONNECT)) {\r | |
128 | ReconnectAll = TRUE;\r | |
129 | }\r | |
130 | //\r | |
131 | // Make sure the driver path is connected.\r | |
132 | //\r | |
133 | BdsLibConnectDevicePath (Option->DevicePath);\r | |
134 | \r | |
135 | //\r | |
136 | // Load and start the image that Driver#### describes\r | |
137 | //\r | |
138 | Status = gBS->LoadImage (\r | |
139 | FALSE,\r | |
140 | mBdsImageHandle,\r | |
141 | Option->DevicePath,\r | |
142 | NULL,\r | |
143 | 0,\r | |
144 | &ImageHandle\r | |
145 | );\r | |
146 | \r | |
147 | if (!EFI_ERROR (Status)) {\r | |
148 | gBS->HandleProtocol (ImageHandle, &gEfiLoadedImageProtocolGuid, &ImageInfo);\r | |
149 | \r | |
150 | //\r | |
151 | // Verify whether this image is a driver, if not,\r | |
152 | // exit it and continue to parse next load option\r | |
153 | //\r | |
154 | if (ImageInfo->ImageCodeType != EfiBootServicesCode && ImageInfo->ImageCodeType != EfiRuntimeServicesCode) {\r | |
155 | gBS->Exit (ImageHandle, EFI_INVALID_PARAMETER, 0, NULL);\r | |
156 | continue;\r | |
157 | }\r | |
158 | \r | |
159 | if (Option->LoadOptionsSize != 0) {\r | |
160 | ImageInfo->LoadOptionsSize = Option->LoadOptionsSize;\r | |
161 | ImageInfo->LoadOptions = Option->LoadOptions;\r | |
162 | }\r | |
163 | //\r | |
164 | // Before calling the image, enable the Watchdog Timer for\r | |
165 | // the 5 Minute period\r | |
166 | //\r | |
167 | gBS->SetWatchdogTimer (5 * 60, 0x0000, 0x00, NULL);\r | |
168 | \r | |
169 | Status = gBS->StartImage (ImageHandle, &ExitDataSize, &ExitData);\r | |
170 | DEBUG ((EFI_D_INFO | EFI_D_LOAD, "Driver Return Status = %r\n", Status));\r | |
171 | \r | |
172 | //\r | |
173 | // Clear the Watchdog Timer after the image returns\r | |
174 | //\r | |
175 | gBS->SetWatchdogTimer (0x0000, 0x0000, 0x0000, NULL);\r | |
176 | }\r | |
177 | }\r | |
178 | //\r | |
179 | // Process the LOAD_OPTION_FORCE_RECONNECT driver option\r | |
180 | //\r | |
181 | if (ReconnectAll) {\r | |
182 | BdsLibDisconnectAllEfi ();\r | |
183 | BdsLibConnectAll ();\r | |
184 | }\r | |
185 | \r | |
186 | }\r | |
187 | \r | |
188 | EFI_STATUS\r | |
189 | BdsLibRegisterNewOption (\r | |
190 | IN LIST_ENTRY *BdsOptionList,\r | |
191 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,\r | |
192 | IN CHAR16 *String,\r | |
193 | IN CHAR16 *VariableName\r | |
194 | )\r | |
195 | /*++\r | |
196 | \r | |
197 | Routine Description:\r | |
198 | \r | |
199 | This function will register the new boot#### or driver#### option base on\r | |
200 | the VariableName. The new registered boot#### or driver#### will be linked\r | |
201 | to BdsOptionList and also update to the VariableName. After the boot#### or\r | |
202 | driver#### updated, the BootOrder or DriverOrder will also be updated.\r | |
203 | \r | |
204 | Arguments:\r | |
205 | \r | |
206 | BdsOptionList - The header of the boot#### or driver#### link list\r | |
207 | \r | |
208 | DevicePath - The device path which the boot####\r | |
209 | or driver#### option present\r | |
210 | \r | |
211 | String - The description of the boot#### or driver####\r | |
212 | \r | |
213 | VariableName - Indicate if the boot#### or driver#### option\r | |
214 | \r | |
215 | Returns:\r | |
216 | \r | |
217 | EFI_SUCCESS - The boot#### or driver#### have been success registered\r | |
218 | \r | |
219 | EFI_STATUS - Return the status of gRT->SetVariable ().\r | |
220 | \r | |
221 | --*/\r | |
222 | {\r | |
223 | EFI_STATUS Status;\r | |
224 | UINTN Index;\r | |
225 | UINT16 MaxOptionNumber;\r | |
226 | UINT16 RegisterOptionNumber;\r | |
227 | UINT16 *TempOptionPtr;\r | |
228 | UINTN TempOptionSize;\r | |
229 | UINT16 *OptionOrderPtr;\r | |
230 | VOID *OptionPtr;\r | |
231 | UINTN OptionSize;\r | |
232 | UINT8 *TempPtr;\r | |
233 | EFI_DEVICE_PATH_PROTOCOL *OptionDevicePath;\r | |
234 | CHAR16 *Description;\r | |
235 | CHAR16 OptionName[10];\r | |
236 | BOOLEAN UpdateBootDevicePath;\r | |
237 | \r | |
238 | OptionPtr = NULL;\r | |
239 | OptionSize = 0;\r | |
240 | TempPtr = NULL;\r | |
241 | OptionDevicePath = NULL;\r | |
242 | Description = NULL;\r | |
243 | MaxOptionNumber = 0;\r | |
244 | OptionOrderPtr = NULL;\r | |
245 | UpdateBootDevicePath = FALSE;\r | |
246 | ZeroMem (OptionName, sizeof (OptionName));\r | |
247 | \r | |
248 | TempOptionSize = 0;\r | |
249 | TempOptionPtr = BdsLibGetVariableAndSize (\r | |
250 | VariableName,\r | |
251 | &gEfiGlobalVariableGuid,\r | |
252 | &TempOptionSize\r | |
253 | );\r | |
254 | //\r | |
255 | // Compare with current option variable\r | |
256 | //\r | |
257 | for (Index = 0; Index < TempOptionSize / sizeof (UINT16); Index++) {\r | |
258 | //\r | |
259 | // Got the max option#### number\r | |
260 | //\r | |
261 | if (MaxOptionNumber < TempOptionPtr[Index]) {\r | |
262 | MaxOptionNumber = TempOptionPtr[Index];\r | |
263 | }\r | |
264 | \r | |
265 | if (*VariableName == 'B') {\r | |
266 | UnicodeSPrint (OptionName, sizeof (OptionName), L"Boot%04x", TempOptionPtr[Index]);\r | |
267 | } else {\r | |
268 | UnicodeSPrint (OptionName, sizeof (OptionName), L"Driver%04x", TempOptionPtr[Index]);\r | |
269 | }\r | |
270 | \r | |
271 | OptionPtr = BdsLibGetVariableAndSize (\r | |
272 | OptionName,\r | |
273 | &gEfiGlobalVariableGuid,\r | |
274 | &OptionSize\r | |
275 | );\r | |
276 | TempPtr = OptionPtr;\r | |
277 | TempPtr += sizeof (UINT32) + sizeof (UINT16);\r | |
278 | Description = (CHAR16 *) TempPtr;\r | |
279 | TempPtr += StrSize ((CHAR16 *) TempPtr);\r | |
280 | OptionDevicePath = (EFI_DEVICE_PATH_PROTOCOL *) TempPtr;\r | |
281 | \r | |
282 | //\r | |
283 | // Notes: the description may will change base on the GetStringToken\r | |
284 | //\r | |
285 | if (CompareMem (Description, String, StrSize (Description)) == 0) {\r | |
286 | if (CompareMem (OptionDevicePath, DevicePath, GetDevicePathSize (OptionDevicePath)) == 0) {\r | |
287 | //\r | |
288 | // Got the option, so just return\r | |
289 | //\r | |
290 | gBS->FreePool (OptionPtr);\r | |
291 | gBS->FreePool (TempOptionPtr);\r | |
292 | return EFI_SUCCESS;\r | |
293 | } else {\r | |
294 | //\r | |
295 | // Boot device path changed, need update.\r | |
296 | //\r | |
297 | UpdateBootDevicePath = TRUE;\r | |
298 | break;\r | |
299 | }\r | |
300 | }\r | |
301 | \r | |
302 | gBS->FreePool (OptionPtr);\r | |
303 | }\r | |
304 | \r | |
305 | OptionSize = sizeof (UINT32) + sizeof (UINT16) + StrSize (String) + GetDevicePathSize (DevicePath);\r | |
306 | OptionPtr = AllocateZeroPool (OptionSize);\r | |
307 | TempPtr = OptionPtr;\r | |
308 | *(UINT32 *) TempPtr = LOAD_OPTION_ACTIVE;\r | |
309 | TempPtr += sizeof (UINT32);\r | |
310 | *(UINT16 *) TempPtr = (UINT16) GetDevicePathSize (DevicePath);\r | |
311 | TempPtr += sizeof (UINT16);\r | |
312 | CopyMem (TempPtr, String, StrSize (String));\r | |
313 | TempPtr += StrSize (String);\r | |
314 | CopyMem (TempPtr, DevicePath, GetDevicePathSize (DevicePath));\r | |
315 | \r | |
316 | if (UpdateBootDevicePath) {\r | |
317 | //\r | |
318 | // The number in option#### to be updated\r | |
319 | //\r | |
320 | RegisterOptionNumber = TempOptionPtr[Index];\r | |
321 | } else {\r | |
322 | //\r | |
323 | // The new option#### number\r | |
324 | //\r | |
325 | RegisterOptionNumber = MaxOptionNumber + 1;\r | |
326 | }\r | |
327 | \r | |
328 | if (*VariableName == 'B') {\r | |
329 | UnicodeSPrint (OptionName, sizeof (OptionName), L"Boot%04x", RegisterOptionNumber);\r | |
330 | } else {\r | |
331 | UnicodeSPrint (OptionName, sizeof (OptionName), L"Driver%04x", RegisterOptionNumber);\r | |
332 | }\r | |
333 | \r | |
334 | Status = gRT->SetVariable (\r | |
335 | OptionName,\r | |
336 | &gEfiGlobalVariableGuid,\r | |
337 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
338 | OptionSize,\r | |
339 | OptionPtr\r | |
340 | );\r | |
341 | if (EFI_ERROR (Status) || UpdateBootDevicePath) {\r | |
342 | gBS->FreePool (OptionPtr);\r | |
343 | gBS->FreePool (TempOptionPtr);\r | |
344 | return Status;\r | |
345 | }\r | |
346 | \r | |
347 | gBS->FreePool (OptionPtr);\r | |
348 | \r | |
349 | //\r | |
350 | // Update the option order variable\r | |
351 | //\r | |
352 | OptionOrderPtr = AllocateZeroPool ((Index + 1) * sizeof (UINT16));\r | |
353 | CopyMem (OptionOrderPtr, TempOptionPtr, Index * sizeof (UINT16));\r | |
354 | OptionOrderPtr[Index] = RegisterOptionNumber;\r | |
355 | Status = gRT->SetVariable (\r | |
356 | VariableName,\r | |
357 | &gEfiGlobalVariableGuid,\r | |
358 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r | |
359 | (Index + 1) * sizeof (UINT16),\r | |
360 | OptionOrderPtr\r | |
361 | );\r | |
362 | if (EFI_ERROR (Status)) {\r | |
363 | gBS->FreePool (TempOptionPtr);\r | |
364 | gBS->FreePool (OptionOrderPtr);\r | |
365 | return Status;\r | |
366 | }\r | |
367 | \r | |
368 | gBS->FreePool (TempOptionPtr);\r | |
369 | gBS->FreePool (OptionOrderPtr);\r | |
370 | \r | |
371 | return EFI_SUCCESS;\r | |
372 | }\r | |
373 | \r | |
374 | BDS_COMMON_OPTION *\r | |
375 | BdsLibVariableToOption (\r | |
376 | IN OUT LIST_ENTRY *BdsCommonOptionList,\r | |
377 | IN CHAR16 *VariableName\r | |
378 | )\r | |
379 | /*++\r | |
380 | \r | |
381 | Routine Description:\r | |
382 | \r | |
383 | Build the boot#### or driver#### option from the VariableName, the \r | |
384 | build boot#### or driver#### will also be linked to BdsCommonOptionList\r | |
385 | \r | |
386 | Arguments:\r | |
387 | \r | |
388 | BdsCommonOptionList - The header of the boot#### or driver#### option link list\r | |
389 | \r | |
390 | VariableName - EFI Variable name indicate if it is boot#### or driver####\r | |
391 | \r | |
392 | Returns:\r | |
393 | \r | |
394 | BDS_COMMON_OPTION - Get the option just been created\r | |
395 | \r | |
396 | NULL - Failed to get the new option\r | |
397 | \r | |
398 | --*/\r | |
399 | {\r | |
400 | UINT32 Attribute;\r | |
401 | UINT16 FilePathSize;\r | |
402 | UINT8 *Variable;\r | |
403 | UINT8 *TempPtr;\r | |
404 | UINTN VariableSize;\r | |
405 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
406 | BDS_COMMON_OPTION *Option;\r | |
407 | VOID *LoadOptions;\r | |
408 | UINT32 LoadOptionsSize;\r | |
409 | CHAR16 *Description;\r | |
410 | \r | |
411 | //\r | |
412 | // Read the variable. We will never free this data.\r | |
413 | //\r | |
414 | Variable = BdsLibGetVariableAndSize (\r | |
415 | VariableName,\r | |
416 | &gEfiGlobalVariableGuid,\r | |
417 | &VariableSize\r | |
418 | );\r | |
419 | if (Variable == NULL) {\r | |
420 | return NULL;\r | |
421 | }\r | |
422 | //\r | |
423 | // Notes: careful defined the variable of Boot#### or\r | |
424 | // Driver####, consider use some macro to abstract the code\r | |
425 | //\r | |
426 | //\r | |
427 | // Get the option attribute\r | |
428 | //\r | |
429 | TempPtr = Variable;\r | |
430 | Attribute = *(UINT32 *) Variable;\r | |
431 | TempPtr += sizeof (UINT32);\r | |
432 | \r | |
433 | //\r | |
434 | // Get the option's device path size\r | |
435 | //\r | |
436 | FilePathSize = *(UINT16 *) TempPtr;\r | |
437 | TempPtr += sizeof (UINT16);\r | |
438 | \r | |
439 | //\r | |
440 | // Get the option's description string\r | |
441 | //\r | |
442 | Description = (CHAR16 *) TempPtr;\r | |
443 | \r | |
444 | //\r | |
445 | // Get the option's description string size\r | |
446 | //\r | |
447 | TempPtr += StrSize ((CHAR16 *) TempPtr);\r | |
448 | \r | |
449 | //\r | |
450 | // Get the option's device path\r | |
451 | //\r | |
452 | DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) TempPtr;\r | |
453 | TempPtr += FilePathSize;\r | |
454 | \r | |
455 | LoadOptions = TempPtr;\r | |
456 | LoadOptionsSize = (UINT32) (VariableSize - (UINTN) (TempPtr - Variable));\r | |
457 | \r | |
458 | //\r | |
459 | // The Console variables may have multiple device paths, so make\r | |
460 | // an Entry for each one.\r | |
461 | //\r | |
462 | Option = AllocateZeroPool (sizeof (BDS_COMMON_OPTION));\r | |
463 | if (Option == NULL) {\r | |
464 | return NULL;\r | |
465 | }\r | |
466 | \r | |
467 | Option->Signature = BDS_LOAD_OPTION_SIGNATURE;\r | |
468 | Option->DevicePath = AllocateZeroPool (GetDevicePathSize (DevicePath));\r | |
469 | CopyMem (Option->DevicePath, DevicePath, GetDevicePathSize (DevicePath));\r | |
470 | Option->Attribute = Attribute;\r | |
471 | Option->Description = AllocateZeroPool (StrSize (Description));\r | |
472 | CopyMem (Option->Description, Description, StrSize (Description));\r | |
473 | Option->LoadOptions = AllocateZeroPool (LoadOptionsSize);\r | |
474 | CopyMem (Option->LoadOptions, LoadOptions, LoadOptionsSize);\r | |
475 | Option->LoadOptionsSize = LoadOptionsSize;\r | |
476 | \r | |
477 | //\r | |
478 | // Insert active entry to BdsDeviceList\r | |
479 | //\r | |
480 | if ((Option->Attribute & LOAD_OPTION_ACTIVE) == LOAD_OPTION_ACTIVE) {\r | |
481 | InsertTailList (BdsCommonOptionList, &Option->Link);\r | |
482 | gBS->FreePool (Variable);\r | |
483 | return Option;\r | |
484 | }\r | |
485 | \r | |
486 | gBS->FreePool (Variable);\r | |
487 | gBS->FreePool (Option);\r | |
488 | return NULL;\r | |
489 | \r | |
490 | }\r | |
491 | \r | |
492 | EFI_STATUS\r | |
493 | BdsLibBuildOptionFromVar (\r | |
494 | IN LIST_ENTRY *BdsCommonOptionList,\r | |
495 | IN CHAR16 *VariableName\r | |
496 | )\r | |
497 | /*++\r | |
498 | \r | |
499 | Routine Description:\r | |
500 | \r | |
501 | Process BootOrder, or DriverOrder variables, by calling\r | |
502 | BdsLibVariableToOption () for each UINT16 in the variables.\r | |
503 | \r | |
504 | Arguments:\r | |
505 | \r | |
506 | BdsCommonOptionList - The header of the option list base on variable\r | |
507 | VariableName\r | |
508 | \r | |
509 | VariableName - EFI Variable name indicate the BootOrder or DriverOrder\r | |
510 | \r | |
511 | Returns:\r | |
512 | \r | |
513 | EFI_SUCCESS - Success create the boot option or driver option list\r | |
514 | \r | |
515 | EFI_OUT_OF_RESOURCES - Failed to get the boot option or driver option list\r | |
516 | \r | |
517 | --*/\r | |
518 | {\r | |
519 | UINT16 *OptionOrder;\r | |
520 | UINTN OptionOrderSize;\r | |
521 | UINTN Index;\r | |
522 | BDS_COMMON_OPTION *Option;\r | |
523 | CHAR16 OptionName[20];\r | |
524 | \r | |
525 | //\r | |
526 | // Zero Buffer in order to get all BOOT#### variables\r | |
527 | //\r | |
528 | ZeroMem (OptionName, sizeof (OptionName));\r | |
529 | \r | |
530 | //\r | |
531 | // Read the BootOrder, or DriverOrder variable.\r | |
532 | //\r | |
533 | OptionOrder = BdsLibGetVariableAndSize (\r | |
534 | VariableName,\r | |
535 | &gEfiGlobalVariableGuid,\r | |
536 | &OptionOrderSize\r | |
537 | );\r | |
538 | if (OptionOrder == NULL) {\r | |
539 | return EFI_OUT_OF_RESOURCES;\r | |
540 | }\r | |
541 | \r | |
542 | for (Index = 0; Index < OptionOrderSize / sizeof (UINT16); Index++) {\r | |
543 | if (*VariableName == 'B') {\r | |
544 | UnicodeSPrint (OptionName, sizeof (OptionName), L"Boot%04x", OptionOrder[Index]);\r | |
545 | } else {\r | |
546 | UnicodeSPrint (OptionName, sizeof (OptionName), L"Driver%04x", OptionOrder[Index]);\r | |
547 | }\r | |
548 | Option = BdsLibVariableToOption (BdsCommonOptionList, OptionName);\r | |
549 | Option->BootCurrent = OptionOrder[Index];\r | |
550 | \r | |
551 | }\r | |
552 | \r | |
553 | gBS->FreePool (OptionOrder);\r | |
554 | \r | |
555 | return EFI_SUCCESS;\r | |
556 | }\r | |
557 | \r | |
558 | EFI_STATUS\r | |
559 | BdsLibGetBootMode (\r | |
560 | OUT EFI_BOOT_MODE *BootMode\r | |
561 | )\r | |
562 | /*++\r | |
563 | \r | |
564 | Routine Description:\r | |
565 | \r | |
566 | Get boot mode by looking up configuration table and parsing HOB list\r | |
567 | \r | |
568 | Arguments:\r | |
569 | \r | |
570 | BootMode - Boot mode from PEI handoff HOB.\r | |
571 | \r | |
572 | Returns:\r | |
573 | \r | |
574 | EFI_SUCCESS - Successfully get boot mode\r | |
575 | \r | |
576 | EFI_NOT_FOUND - Can not find the current system boot mode\r | |
577 | \r | |
578 | --*/\r | |
579 | {\r | |
580 | EFI_HOB_HANDOFF_INFO_TABLE *HobList;\r | |
581 | \r | |
582 | HobList = GetHobList ();\r | |
583 | ASSERT (HobList->Header.HobType == EFI_HOB_TYPE_HANDOFF);\r | |
584 | *BootMode = HobList->BootMode;\r | |
585 | \r | |
586 | return EFI_SUCCESS;\r | |
587 | }\r | |
588 | \r | |
589 | VOID *\r | |
590 | BdsLibGetVariableAndSize (\r | |
591 | IN CHAR16 *Name,\r | |
592 | IN EFI_GUID *VendorGuid,\r | |
593 | OUT UINTN *VariableSize\r | |
594 | )\r | |
595 | /*++\r | |
596 | \r | |
597 | Routine Description:\r | |
598 | \r | |
599 | Read the EFI variable (VendorGuid/Name) and return a dynamically allocated\r | |
600 | buffer, and the size of the buffer. If failure return NULL.\r | |
601 | \r | |
602 | Arguments:\r | |
603 | \r | |
604 | Name - String part of EFI variable name\r | |
605 | \r | |
606 | VendorGuid - GUID part of EFI variable name\r | |
607 | \r | |
608 | VariableSize - Returns the size of the EFI variable that was read\r | |
609 | \r | |
610 | Returns:\r | |
611 | \r | |
612 | Dynamically allocated memory that contains a copy of the EFI variable.\r | |
613 | Caller is responsible freeing the buffer.\r | |
614 | \r | |
615 | NULL - Variable was not read\r | |
616 | \r | |
617 | --*/\r | |
618 | {\r | |
619 | EFI_STATUS Status;\r | |
620 | UINTN BufferSize;\r | |
621 | VOID *Buffer;\r | |
622 | \r | |
623 | Buffer = NULL;\r | |
624 | \r | |
625 | //\r | |
626 | // Pass in a zero size buffer to find the required buffer size.\r | |
627 | //\r | |
628 | BufferSize = 0;\r | |
629 | Status = gRT->GetVariable (Name, VendorGuid, NULL, &BufferSize, Buffer);\r | |
630 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
631 | //\r | |
632 | // Allocate the buffer to return\r | |
633 | //\r | |
634 | Buffer = AllocateZeroPool (BufferSize);\r | |
635 | if (Buffer == NULL) {\r | |
636 | return NULL;\r | |
637 | }\r | |
638 | //\r | |
639 | // Read variable into the allocated buffer.\r | |
640 | //\r | |
641 | Status = gRT->GetVariable (Name, VendorGuid, NULL, &BufferSize, Buffer);\r | |
642 | if (EFI_ERROR (Status)) {\r | |
643 | BufferSize = 0;\r | |
644 | }\r | |
645 | }\r | |
646 | \r | |
647 | *VariableSize = BufferSize;\r | |
648 | return Buffer;\r | |
649 | }\r | |
650 | \r | |
651 | BOOLEAN\r | |
652 | BdsLibMatchDevicePaths (\r | |
653 | IN EFI_DEVICE_PATH_PROTOCOL *Multi,\r | |
654 | IN EFI_DEVICE_PATH_PROTOCOL *Single\r | |
655 | )\r | |
656 | /*++\r | |
657 | \r | |
658 | Routine Description:\r | |
659 | \r | |
660 | Function compares a device path data structure to that of all the nodes of a\r | |
661 | second device path instance.\r | |
662 | \r | |
663 | Arguments:\r | |
664 | \r | |
665 | Multi - A pointer to a multi-instance device path data structure.\r | |
666 | \r | |
667 | Single - A pointer to a single-instance device path data structure.\r | |
668 | \r | |
669 | Returns:\r | |
670 | \r | |
671 | TRUE - If the Single is contained within Multi\r | |
672 | \r | |
673 | FALSE - The Single is not match within Multi\r | |
674 | \r | |
675 | \r | |
676 | --*/\r | |
677 | {\r | |
678 | EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r | |
679 | EFI_DEVICE_PATH_PROTOCOL *DevicePathInst;\r | |
680 | UINTN Size;\r | |
681 | \r | |
682 | if (!Multi || !Single) {\r | |
683 | return FALSE;\r | |
684 | }\r | |
685 | \r | |
686 | DevicePath = Multi;\r | |
687 | DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);\r | |
688 | Size -= sizeof (EFI_DEVICE_PATH_PROTOCOL);\r | |
689 | \r | |
690 | //\r | |
691 | // Search for the match of 'Single' in 'Multi'\r | |
692 | //\r | |
693 | while (DevicePathInst != NULL) {\r | |
694 | //\r | |
695 | // If the single device path is found in multiple device paths,\r | |
696 | // return success\r | |
697 | //\r | |
698 | if (Size == 0) {\r | |
699 | return FALSE;\r | |
700 | }\r | |
701 | \r | |
702 | if (CompareMem (Single, DevicePathInst, Size) == 0) {\r | |
703 | return TRUE;\r | |
704 | }\r | |
705 | \r | |
706 | gBS->FreePool (DevicePathInst);\r | |
707 | DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);\r | |
708 | Size -= sizeof (EFI_DEVICE_PATH_PROTOCOL);\r | |
709 | }\r | |
710 | \r | |
711 | return FALSE;\r | |
712 | }\r | |
713 | \r | |
714 | EFI_STATUS\r | |
715 | BdsLibOutputStrings (\r | |
716 | IN EFI_SIMPLE_TEXT_OUT_PROTOCOL *ConOut,\r | |
717 | ...\r | |
718 | )\r | |
719 | /*++\r | |
720 | \r | |
721 | Routine Description:\r | |
722 | \r | |
723 | This function prints a series of strings.\r | |
724 | \r | |
725 | Arguments:\r | |
726 | \r | |
727 | ConOut - Pointer to EFI_SIMPLE_TEXT_OUT_PROTOCOL\r | |
728 | \r | |
729 | ... - A variable argument list containing series of strings,\r | |
730 | the last string must be NULL.\r | |
731 | \r | |
732 | Returns:\r | |
733 | \r | |
734 | EFI_SUCCESS - Success print out the string using ConOut.\r | |
735 | \r | |
736 | EFI_STATUS - Return the status of the ConOut->OutputString ().\r | |
737 | \r | |
738 | --*/\r | |
739 | {\r | |
740 | VA_LIST args;\r | |
741 | EFI_STATUS Status;\r | |
742 | CHAR16 *String;\r | |
743 | \r | |
744 | Status = EFI_SUCCESS;\r | |
745 | VA_START (args, ConOut);\r | |
746 | \r | |
747 | while (!EFI_ERROR (Status)) {\r | |
748 | //\r | |
749 | // If String is NULL, then it's the end of the list\r | |
750 | //\r | |
751 | String = VA_ARG (args, CHAR16 *);\r | |
752 | if (!String) {\r | |
753 | break;\r | |
754 | }\r | |
755 | \r | |
756 | Status = ConOut->OutputString (ConOut, String);\r | |
757 | \r | |
758 | if (EFI_ERROR (Status)) {\r | |
759 | break;\r | |
760 | }\r | |
761 | }\r | |
762 | \r | |
763 | return Status;\r | |
764 | }\r |