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ea46ebbe | 1 | /** @file\r |
2 | *\r | |
3 | * Copyright (c) 2011, ARM Limited. All rights reserved.\r | |
4 | *\r | |
5 | * This program and the accompanying materials\r | |
6 | * are licensed and made available under the terms and conditions of the BSD License\r | |
7 | * which accompanies this distribution. The full text of the license may be found at\r | |
8 | * http://opensource.org/licenses/bsd-license.php\r | |
9 | *\r | |
10 | * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | *\r | |
13 | **/\r | |
14 | \r | |
15 | #include "BdsInternal.h"\r | |
16 | \r | |
17 | extern EFI_HANDLE mImageHandle;\r | |
18 | \r | |
19 | EFI_STATUS\r | |
20 | BootOptionStart (\r | |
21 | IN BDS_LOAD_OPTION *BootOption\r | |
22 | )\r | |
23 | {\r | |
c60ea9a8 | 24 | EFI_STATUS Status;\r |
25 | EFI_DEVICE_PATH* FdtDevicePath;\r | |
26 | EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL* EfiDevicePathFromTextProtocol;\r | |
27 | UINT32 LoaderType;\r | |
ea46ebbe | 28 | \r |
29 | Status = EFI_UNSUPPORTED;\r | |
c60ea9a8 | 30 | LoaderType = ReadUnaligned32 (&BootOption->OptionalData->LoaderType);\r |
ea46ebbe | 31 | \r |
c60ea9a8 | 32 | if (LoaderType == BDS_LOADER_EFI_APPLICATION) {\r |
ea46ebbe | 33 | // Need to connect every drivers to ensure no dependencies are missing for the application\r |
34 | BdsConnectAllDrivers();\r | |
35 | \r | |
36 | Status = BdsStartEfiApplication (mImageHandle, BootOption->FilePathList);\r | |
c60ea9a8 | 37 | } else if (LoaderType == BDS_LOADER_KERNEL_LINUX_ATAG) {\r |
656416bc | 38 | Status = BdsBootLinux (BootOption->FilePathList, \r |
39 | (EFI_DEVICE_PATH_PROTOCOL*)ReadUnaligned32((UINT32*)(&BootOption->OptionalData->Arguments.LinuxAtagArguments.InitrdPathList)),\r | |
40 | BootOption->OptionalData->Arguments.LinuxAtagArguments.CmdLine,\r | |
41 | NULL);\r | |
c60ea9a8 | 42 | } else if (LoaderType == BDS_LOADER_KERNEL_LINUX_FDT) {\r |
ea46ebbe | 43 | // Convert the FDT path into a Device Path\r |
44 | Status = gBS->LocateProtocol (&gEfiDevicePathFromTextProtocolGuid, NULL, (VOID **)&EfiDevicePathFromTextProtocol);\r | |
45 | ASSERT_EFI_ERROR(Status);\r | |
46 | FdtDevicePath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath ((CHAR16*)PcdGetPtr(PcdFdtDevicePath));\r | |
47 | \r | |
656416bc | 48 | Status = BdsBootLinux (BootOption->FilePathList,\r |
49 | NULL,\r | |
50 | NULL,\r | |
51 | FdtDevicePath);\r | |
52 | \r | |
ea46ebbe | 53 | FreePool(FdtDevicePath);\r |
54 | }\r | |
55 | \r | |
56 | return Status;\r | |
57 | }\r | |
58 | \r | |
59 | EFI_STATUS\r | |
60 | BootOptionParseLoadOption (\r | |
61 | IN EFI_LOAD_OPTION EfiLoadOption,\r | |
62 | IN UINTN EfiLoadOptionSize,\r | |
63 | OUT BDS_LOAD_OPTION **BdsLoadOption\r | |
64 | )\r | |
65 | {\r | |
66 | BDS_LOAD_OPTION *LoadOption;\r | |
67 | UINTN FilePathListLength;\r | |
68 | UINTN DescriptionLength;\r | |
69 | \r | |
70 | if (EfiLoadOption == NULL) {\r | |
71 | return EFI_INVALID_PARAMETER;\r | |
72 | }\r | |
73 | \r | |
74 | if (EfiLoadOptionSize < sizeof(UINT32) + sizeof(UINT16) + sizeof(CHAR16) + sizeof(EFI_DEVICE_PATH_PROTOCOL)) {\r | |
75 | return EFI_BAD_BUFFER_SIZE;\r | |
76 | }\r | |
77 | \r | |
78 | LoadOption = (BDS_LOAD_OPTION*)AllocatePool(sizeof(BDS_LOAD_OPTION));\r | |
79 | if (LoadOption == NULL) {\r | |
80 | return EFI_OUT_OF_RESOURCES;\r | |
81 | }\r | |
82 | \r | |
83 | LoadOption->LoadOption = EfiLoadOption;\r | |
84 | LoadOption->LoadOptionSize = EfiLoadOptionSize;\r | |
85 | \r | |
86 | LoadOption->Attributes = *(UINT32*)EfiLoadOption;\r | |
87 | FilePathListLength = *(UINT16*)(EfiLoadOption + sizeof(UINT32));\r | |
88 | LoadOption->Description = (CHAR16*)(EfiLoadOption + sizeof(UINT32) + sizeof(UINT16));\r | |
89 | DescriptionLength = StrSize (LoadOption->Description);\r | |
90 | LoadOption->FilePathList = (EFI_DEVICE_PATH_PROTOCOL*)(EfiLoadOption + sizeof(UINT32) + sizeof(UINT16) + DescriptionLength);\r | |
91 | \r | |
92 | if ((UINTN)((UINT8*)LoadOption->FilePathList + FilePathListLength - EfiLoadOption) == EfiLoadOptionSize) {\r | |
93 | LoadOption->OptionalData = NULL;\r | |
94 | } else {\r | |
95 | LoadOption->OptionalData = (BDS_LOADER_OPTIONAL_DATA *)((UINT8*)LoadOption->FilePathList + FilePathListLength);\r | |
96 | }\r | |
97 | \r | |
98 | *BdsLoadOption = LoadOption;\r | |
99 | return EFI_SUCCESS;\r | |
100 | }\r | |
101 | \r | |
102 | EFI_STATUS\r | |
103 | BootOptionFromLoadOptionVariable (\r | |
104 | IN UINT16 LoadOptionIndex,\r | |
105 | OUT BDS_LOAD_OPTION **BdsLoadOption\r | |
106 | )\r | |
107 | {\r | |
108 | EFI_STATUS Status;\r | |
109 | CHAR16 BootVariableName[9];\r | |
110 | EFI_LOAD_OPTION EfiLoadOption;\r | |
111 | UINTN EfiLoadOptionSize;\r | |
112 | \r | |
113 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", LoadOptionIndex);\r | |
114 | \r | |
115 | Status = GetEnvironmentVariable (BootVariableName, NULL, &EfiLoadOptionSize, (VOID**)&EfiLoadOption);\r | |
116 | if (!EFI_ERROR(Status)) {\r | |
117 | Status = BootOptionParseLoadOption (EfiLoadOption,EfiLoadOptionSize,BdsLoadOption);\r | |
118 | if (!EFI_ERROR(Status)) {\r | |
119 | (*BdsLoadOption)->LoadOptionIndex = LoadOptionIndex;\r | |
120 | }\r | |
121 | }\r | |
122 | \r | |
123 | return Status;\r | |
124 | }\r | |
125 | \r | |
126 | EFI_STATUS\r | |
127 | BootOptionList (\r | |
128 | IN OUT LIST_ENTRY *BootOptionList\r | |
129 | )\r | |
130 | {\r | |
131 | EFI_STATUS Status;\r | |
132 | UINTN Index;\r | |
133 | UINT16 *BootOrder;\r | |
134 | UINTN BootOrderSize;\r | |
135 | BDS_LOAD_OPTION *BdsLoadOption;\r | |
136 | \r | |
137 | InitializeListHead (BootOptionList);\r | |
138 | \r | |
139 | // Get the Boot Option Order from the environment variable\r | |
140 | Status = GetEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r | |
141 | if (EFI_ERROR(Status)) {\r | |
142 | return Status;\r | |
143 | }\r | |
144 | \r | |
145 | for (Index = 0; Index < BootOrderSize / sizeof (UINT16); Index++) {\r | |
146 | Status = BootOptionFromLoadOptionVariable (BootOrder[Index],&BdsLoadOption);\r | |
147 | if (!EFI_ERROR(Status)) {\r | |
148 | InsertTailList (BootOptionList,&BdsLoadOption->Link);\r | |
149 | }\r | |
150 | }\r | |
151 | \r | |
152 | return EFI_SUCCESS;\r | |
153 | }\r | |
154 | \r | |
155 | UINT16\r | |
156 | BootOptionAllocateBootIndex (\r | |
157 | VOID\r | |
158 | )\r | |
159 | {\r | |
160 | EFI_STATUS Status;\r | |
161 | UINTN Index;\r | |
162 | UINT32 BootIndex;\r | |
163 | UINT16 *BootOrder;\r | |
164 | UINTN BootOrderSize;\r | |
165 | BOOLEAN Found;\r | |
166 | \r | |
167 | // Get the Boot Option Order from the environment variable\r | |
168 | Status = GetEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r | |
169 | if (!EFI_ERROR(Status)) {\r | |
170 | for (BootIndex = 0; BootIndex <= 0xFFFF; BootIndex++) {\r | |
171 | Found = FALSE;\r | |
172 | for (Index = 0; Index < BootOrderSize / sizeof (UINT16); Index++) {\r | |
173 | if (BootOrder[Index] == BootIndex) {\r | |
174 | Found = TRUE;\r | |
175 | break;\r | |
176 | }\r | |
177 | }\r | |
178 | if (!Found) {\r | |
179 | return BootIndex;\r | |
180 | }\r | |
181 | }\r | |
182 | }\r | |
183 | // Return the first index\r | |
184 | return 0;\r | |
185 | }\r | |
186 | \r | |
187 | STATIC\r | |
188 | EFI_STATUS\r | |
189 | BootOptionSetFields (\r | |
c60ea9a8 | 190 | IN BDS_LOAD_OPTION* BootOption,\r |
191 | IN UINT32 Attributes,\r | |
192 | IN CHAR16* BootDescription,\r | |
193 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r | |
656416bc | 194 | IN BDS_LOADER_TYPE BootType,\r |
195 | IN BDS_LOADER_ARGUMENTS* BootArguments\r | |
ea46ebbe | 196 | )\r |
197 | {\r | |
198 | EFI_LOAD_OPTION EfiLoadOption;\r | |
199 | UINTN EfiLoadOptionSize;\r | |
200 | UINTN BootDescriptionSize;\r | |
201 | UINTN BootOptionalDataSize;\r | |
202 | UINT16 FilePathListLength;\r | |
656416bc | 203 | UINT16 InitrdPathListLength;\r |
ea46ebbe | 204 | EFI_DEVICE_PATH_PROTOCOL* DevicePathNode;\r |
656416bc | 205 | EFI_DEVICE_PATH_PROTOCOL* InitrdPathNode;\r |
ea46ebbe | 206 | UINTN NodeLength;\r |
207 | UINT8* EfiLoadOptionPtr;\r | |
656416bc | 208 | UINT8 *InitrdPathListPtr;\r |
ea46ebbe | 209 | \r |
210 | // If we are overwriting an existent Boot Option then we have to free previously allocated memory\r | |
211 | if (BootOption->LoadOption) {\r | |
212 | FreePool(BootOption->LoadOption);\r | |
213 | }\r | |
214 | \r | |
215 | BootDescriptionSize = StrSize(BootDescription);\r | |
656416bc | 216 | BootOptionalDataSize = sizeof(BDS_LOADER_TYPE) + (BootType == BDS_LOADER_KERNEL_LINUX_ATAG ? \r |
217 | (sizeof(UINT16) + sizeof(EFI_DEVICE_PATH_PROTOCOL*) + BOOT_DEVICE_OPTION_MAX + 1)\r | |
218 | : 0);\r | |
ea46ebbe | 219 | \r |
220 | // Compute the size of the FilePath list\r | |
221 | FilePathListLength = 0;\r | |
222 | DevicePathNode = DevicePath;\r | |
223 | while (!IsDevicePathEndType (DevicePathNode)) {\r | |
224 | FilePathListLength += DevicePathNodeLength (DevicePathNode);\r | |
225 | DevicePathNode = NextDevicePathNode (DevicePathNode);\r | |
226 | }\r | |
227 | // Add the length of the DevicePath EndType\r | |
228 | FilePathListLength += DevicePathNodeLength (DevicePathNode);\r | |
229 | \r | |
656416bc | 230 | InitrdPathListLength = 0;\r |
231 | if (BootType == BDS_LOADER_KERNEL_LINUX_ATAG && BootArguments->LinuxAtagArguments.InitrdPathList != NULL) {\r | |
232 | // Compute the size of the InitrdPath list \r | |
233 | InitrdPathNode = BootArguments->LinuxAtagArguments.InitrdPathList;\r | |
234 | while (!IsDevicePathEndType (InitrdPathNode)) {\r | |
235 | InitrdPathListLength += DevicePathNodeLength (InitrdPathNode);\r | |
236 | InitrdPathNode = NextDevicePathNode (InitrdPathNode);\r | |
237 | }\r | |
238 | // Add the length of the DevicePath EndType\r | |
239 | InitrdPathListLength += DevicePathNodeLength (InitrdPathNode);\r | |
240 | }\r | |
241 | \r | |
ea46ebbe | 242 | // Allocate the memory for the EFI Load Option\r |
243 | EfiLoadOptionSize = sizeof(UINT32) + sizeof(UINT16) + BootDescriptionSize + FilePathListLength + BootOptionalDataSize;\r | |
244 | EfiLoadOption = (EFI_LOAD_OPTION)AllocatePool(EfiLoadOptionSize);\r | |
245 | EfiLoadOptionPtr = EfiLoadOption;\r | |
246 | \r | |
247 | //\r | |
248 | // Populate the EFI Load Option and BDS Boot Option structures\r | |
249 | //\r | |
250 | \r | |
251 | // Attributes fields\r | |
252 | BootOption->Attributes = Attributes;\r | |
253 | *(UINT32*)EfiLoadOptionPtr = Attributes;\r | |
254 | EfiLoadOptionPtr += sizeof(UINT32);\r | |
255 | \r | |
256 | // FilePath List fields\r | |
257 | BootOption->FilePathListLength = FilePathListLength;\r | |
258 | *(UINT16*)EfiLoadOptionPtr = FilePathListLength;\r | |
259 | EfiLoadOptionPtr += sizeof(UINT16);\r | |
260 | \r | |
261 | // Boot description fields\r | |
262 | BootOption->Description = (CHAR16*)EfiLoadOptionPtr;\r | |
263 | CopyMem (EfiLoadOptionPtr, BootDescription, BootDescriptionSize);\r | |
264 | EfiLoadOptionPtr += BootDescriptionSize;\r | |
265 | \r | |
266 | // File path fields\r | |
267 | BootOption->FilePathList = (EFI_DEVICE_PATH_PROTOCOL*)EfiLoadOptionPtr;\r | |
268 | DevicePathNode = DevicePath;\r | |
269 | while (!IsDevicePathEndType (DevicePathNode)) {\r | |
270 | NodeLength = DevicePathNodeLength(DevicePathNode);\r | |
271 | CopyMem (EfiLoadOptionPtr, DevicePathNode, NodeLength);\r | |
272 | EfiLoadOptionPtr += NodeLength;\r | |
273 | DevicePathNode = NextDevicePathNode (DevicePathNode);\r | |
274 | }\r | |
275 | \r | |
276 | // Set the End Device Path Type\r | |
277 | SetDevicePathEndNode (EfiLoadOptionPtr);\r | |
278 | EfiLoadOptionPtr = (UINT8 *)EfiLoadOptionPtr + sizeof(EFI_DEVICE_PATH);\r | |
279 | \r | |
280 | // Optional Data fields, Do unaligned writes\r | |
281 | WriteUnaligned32 ((UINT32 *)EfiLoadOptionPtr, BootType);\r | |
282 | \r | |
ea46ebbe | 283 | BootOption->OptionalData = (BDS_LOADER_OPTIONAL_DATA *)EfiLoadOptionPtr;\r |
284 | \r | |
656416bc | 285 | if (BootType == BDS_LOADER_KERNEL_LINUX_ATAG) {\r |
286 | CopyMem (&((BDS_LOADER_OPTIONAL_DATA*)EfiLoadOptionPtr)->Arguments.LinuxAtagArguments.CmdLine,\r | |
287 | BootArguments->LinuxAtagArguments.CmdLine,\r | |
288 | AsciiStrSize(BootArguments->LinuxAtagArguments.CmdLine));\r | |
289 | \r | |
290 | WriteUnaligned32 ((UINT32 *)(&BootOption->OptionalData->Arguments.LinuxAtagArguments.InitrdPathListLength), InitrdPathListLength);\r | |
291 | \r | |
292 | if ((EFI_DEVICE_PATH_PROTOCOL*)ReadUnaligned32((UINT32 *)&BootOption->OptionalData->Arguments.LinuxAtagArguments.InitrdPathList) != NULL\r | |
293 | && BootArguments->LinuxAtagArguments.InitrdPathList != NULL) {\r | |
294 | InitrdPathListPtr = AllocatePool(InitrdPathListLength);\r | |
295 | WriteUnaligned32 ((UINT32 *)(&BootOption->OptionalData->Arguments.LinuxAtagArguments.InitrdPathList), (UINT32)InitrdPathListPtr);\r | |
296 | InitrdPathNode = BootArguments->LinuxAtagArguments.InitrdPathList;\r | |
297 | \r | |
298 | while (!IsDevicePathEndType (InitrdPathNode)) {\r | |
299 | NodeLength = DevicePathNodeLength(InitrdPathNode);\r | |
300 | CopyMem (InitrdPathListPtr, InitrdPathNode, NodeLength);\r | |
301 | InitrdPathListPtr += NodeLength;\r | |
302 | InitrdPathNode = NextDevicePathNode (InitrdPathNode);\r | |
303 | }\r | |
304 | \r | |
305 | // Set the End Device Path Type\r | |
306 | SetDevicePathEndNode (InitrdPathListPtr);\r | |
307 | } else {\r | |
308 | WriteUnaligned32 ((UINT32 *)(&BootOption->OptionalData->Arguments.LinuxAtagArguments.InitrdPathList), (UINT32)NULL);\r | |
309 | }\r | |
310 | }\r | |
6bab33c7 | 311 | // If this function is called at the creation of the Boot Device entry (not at the update) the\r |
312 | // BootOption->LoadOptionSize must be zero then we get a new BootIndex for this entry\r | |
313 | if (BootOption->LoadOptionSize == 0) {\r | |
314 | BootOption->LoadOptionIndex = BootOptionAllocateBootIndex();\r | |
315 | }\r | |
316 | \r | |
ea46ebbe | 317 | // Fill the EFI Load option fields\r |
ea46ebbe | 318 | BootOption->LoadOption = EfiLoadOption;\r |
319 | BootOption->LoadOptionSize = EfiLoadOptionSize;\r | |
320 | \r | |
321 | return EFI_SUCCESS;\r | |
322 | }\r | |
323 | \r | |
324 | EFI_STATUS\r | |
325 | BootOptionCreate (\r | |
c60ea9a8 | 326 | IN UINT32 Attributes,\r |
327 | IN CHAR16* BootDescription,\r | |
ea46ebbe | 328 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r |
c60ea9a8 | 329 | IN BDS_LOADER_TYPE BootType,\r |
656416bc | 330 | IN BDS_LOADER_ARGUMENTS* BootArguments,\r |
c60ea9a8 | 331 | OUT BDS_LOAD_OPTION **BdsLoadOption\r |
ea46ebbe | 332 | )\r |
333 | {\r | |
c60ea9a8 | 334 | EFI_STATUS Status;\r |
335 | BDS_LOAD_OPTION *BootOption;\r | |
336 | CHAR16 BootVariableName[9];\r | |
ea46ebbe | 337 | UINT16 *BootOrder;\r |
338 | UINTN BootOrderSize;\r | |
339 | \r | |
340 | //\r | |
341 | // Allocate and fill the memory for the BDS Load Option structure\r | |
342 | //\r | |
343 | BootOption = (BDS_LOAD_OPTION*)AllocateZeroPool(sizeof(BDS_LOAD_OPTION));\r | |
344 | \r | |
345 | InitializeListHead (&BootOption->Link);\r | |
346 | BootOptionSetFields (BootOption, Attributes, BootDescription, DevicePath, BootType, BootArguments);\r | |
347 | \r | |
348 | //\r | |
349 | // Set the related environment variables\r | |
350 | //\r | |
351 | \r | |
352 | // Create Boot#### environment variable\r | |
353 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", BootOption->LoadOptionIndex);\r | |
354 | Status = gRT->SetVariable (\r | |
355 | BootVariableName,\r | |
356 | &gEfiGlobalVariableGuid,\r | |
357 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
358 | BootOption->LoadOptionSize,\r | |
359 | BootOption->LoadOption\r | |
360 | );\r | |
361 | \r | |
362 | // Add the new Boot Index to the list\r | |
363 | Status = GetEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r | |
364 | if (!EFI_ERROR(Status)) {\r | |
365 | BootOrder = ReallocatePool (BootOrderSize, BootOrderSize + sizeof(UINT16), BootOrder);\r | |
366 | // Add the new index at the end\r | |
367 | BootOrder[BootOrderSize / sizeof(UINT16)] = BootOption->LoadOptionIndex;\r | |
368 | BootOrderSize += sizeof(UINT16);\r | |
369 | } else {\r | |
370 | // BootOrder does not exist. Create it\r | |
371 | BootOrderSize = sizeof(UINT16);\r | |
372 | BootOrder = &(BootOption->LoadOptionIndex);\r | |
373 | }\r | |
374 | \r | |
375 | // Update (or Create) the BootOrder environment variable\r | |
376 | Status = gRT->SetVariable (\r | |
377 | L"BootOrder",\r | |
378 | &gEfiGlobalVariableGuid,\r | |
379 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
380 | BootOrderSize,\r | |
381 | BootOrder\r | |
382 | );\r | |
383 | \r | |
384 | *BdsLoadOption = BootOption;\r | |
385 | return Status;\r | |
386 | }\r | |
387 | \r | |
388 | EFI_STATUS\r | |
389 | BootOptionUpdate (\r | |
390 | IN BDS_LOAD_OPTION *BdsLoadOption,\r | |
391 | IN UINT32 Attributes,\r | |
392 | IN CHAR16* BootDescription,\r | |
393 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r | |
394 | IN BDS_LOADER_TYPE BootType,\r | |
656416bc | 395 | IN BDS_LOADER_ARGUMENTS* BootArguments\r |
ea46ebbe | 396 | )\r |
397 | {\r | |
398 | EFI_STATUS Status;\r | |
ea46ebbe | 399 | CHAR16 BootVariableName[9];\r |
400 | \r | |
401 | // Update the BDS Load Option structure\r | |
402 | BootOptionSetFields (BdsLoadOption, Attributes, BootDescription, DevicePath, BootType, BootArguments);\r | |
403 | \r | |
404 | // Update the related environment variables\r | |
6bab33c7 | 405 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", BdsLoadOption->LoadOptionIndex);\r |
406 | \r | |
ea46ebbe | 407 | Status = gRT->SetVariable (\r |
408 | BootVariableName,\r | |
409 | &gEfiGlobalVariableGuid,\r | |
410 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
6bab33c7 | 411 | BdsLoadOption->LoadOptionSize,\r |
412 | BdsLoadOption->LoadOption\r | |
ea46ebbe | 413 | );\r |
414 | \r | |
415 | return Status;\r | |
416 | }\r | |
417 | \r | |
418 | EFI_STATUS\r | |
419 | BootOptionDelete (\r | |
420 | IN BDS_LOAD_OPTION *BootOption\r | |
421 | )\r | |
422 | {\r | |
423 | UINTN Index;\r | |
424 | UINTN BootOrderSize;\r | |
425 | UINT16* BootOrder;\r | |
426 | UINTN BootOrderCount;\r | |
427 | EFI_STATUS Status;\r | |
428 | \r | |
429 | // If the Boot Optiono was attached to a list remove it\r | |
430 | if (!IsListEmpty (&BootOption->Link)) {\r | |
431 | // Remove the entry from the list\r | |
432 | RemoveEntryList (&BootOption->Link);\r | |
433 | }\r | |
434 | \r | |
435 | // Remove the entry from the BootOrder environment variable\r | |
436 | Status = GetEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r | |
437 | if (!EFI_ERROR(Status)) {\r | |
438 | BootOrderCount = BootOrderSize / sizeof(UINT16);\r | |
439 | \r | |
440 | // Find the index of the removed entry\r | |
441 | for (Index = 0; Index < BootOrderCount; Index++) {\r | |
442 | if (BootOrder[Index] == BootOption->LoadOptionIndex) {\r | |
443 | // If it the last entry we do not need to rearrange the BootOrder list\r | |
444 | if (Index + 1 != BootOrderCount) {\r | |
445 | CopyMem (&BootOrder[Index],&BootOrder[Index+1], BootOrderCount - (Index + 1));\r | |
446 | }\r | |
447 | break;\r | |
448 | }\r | |
449 | }\r | |
450 | \r | |
451 | // Update the BootOrder environment variable\r | |
452 | Status = gRT->SetVariable (\r | |
453 | L"BootOrder",\r | |
454 | &gEfiGlobalVariableGuid,\r | |
455 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
456 | BootOrderSize - sizeof(UINT16),\r | |
457 | BootOrder\r | |
458 | );\r | |
459 | }\r | |
460 | \r | |
461 | return EFI_SUCCESS;\r | |
462 | }\r |