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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 |
c60ea9a8 | 25 | EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL* EfiDevicePathFromTextProtocol;\r |
26 | UINT32 LoaderType;\r | |
2ccfb71e | 27 | ARM_BDS_LOADER_OPTIONAL_DATA* OptionalData;\r |
28 | ARM_BDS_LINUX_ARGUMENTS* LinuxArguments;\r | |
29 | EFI_DEVICE_PATH_PROTOCOL* FdtDevicePath;\r | |
30 | EFI_DEVICE_PATH_PROTOCOL* DefaultFdtDevicePath;\r | |
31 | UINTN FdtDevicePathSize;\r | |
32 | UINTN CmdLineSize;\r | |
33 | UINTN InitrdSize;\r | |
34 | EFI_DEVICE_PATH* Initrd;\r | |
35 | \r | |
a6e97d28 | 36 | if (IS_ARM_BDS_BOOTENTRY (BootOption)) {\r |
2ccfb71e | 37 | Status = EFI_UNSUPPORTED;\r |
38 | OptionalData = BootOption->OptionalData;\r | |
39 | LoaderType = ReadUnaligned32 ((CONST UINT32*)&OptionalData->Header.LoaderType);\r | |
40 | \r | |
41 | if (LoaderType == BDS_LOADER_EFI_APPLICATION) {\r | |
42 | // Need to connect every drivers to ensure no dependencies are missing for the application\r | |
43 | BdsConnectAllDrivers();\r | |
44 | \r | |
45 | Status = BdsStartEfiApplication (mImageHandle, BootOption->FilePathList, 0, NULL);\r | |
46 | } else if (LoaderType == BDS_LOADER_KERNEL_LINUX_ATAG) {\r | |
47 | LinuxArguments = &(OptionalData->Arguments.LinuxArguments);\r | |
48 | CmdLineSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->CmdLineSize);\r | |
49 | InitrdSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->InitrdSize);\r | |
50 | \r | |
51 | if (InitrdSize > 0) {\r | |
52 | Initrd = GetAlignedDevicePath ((EFI_DEVICE_PATH*)((UINTN)(LinuxArguments + 1) + CmdLineSize));\r | |
53 | } else {\r | |
54 | Initrd = NULL;\r | |
55 | }\r | |
ea46ebbe | 56 | \r |
2ccfb71e | 57 | Status = BdsBootLinux (BootOption->FilePathList,\r |
58 | Initrd, // Initrd\r | |
59 | (CHAR8*)(LinuxArguments + 1), // CmdLine\r | |
60 | NULL);\r | |
61 | } else if (LoaderType == BDS_LOADER_KERNEL_LINUX_FDT) {\r | |
62 | LinuxArguments = &(OptionalData->Arguments.LinuxArguments);\r | |
63 | CmdLineSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->CmdLineSize);\r | |
64 | InitrdSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->InitrdSize);\r | |
65 | \r | |
66 | if (InitrdSize > 0) {\r | |
67 | Initrd = GetAlignedDevicePath ((EFI_DEVICE_PATH*)((UINTN)(LinuxArguments + 1) + CmdLineSize));\r | |
68 | } else {\r | |
69 | Initrd = NULL;\r | |
70 | }\r | |
71 | \r | |
72 | // Get the default FDT device path\r | |
73 | Status = gBS->LocateProtocol (&gEfiDevicePathFromTextProtocolGuid, NULL, (VOID **)&EfiDevicePathFromTextProtocol);\r | |
74 | ASSERT_EFI_ERROR(Status);\r | |
75 | DefaultFdtDevicePath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath ((CHAR16*)PcdGetPtr(PcdFdtDevicePath));\r | |
76 | \r | |
77 | // Get the FDT device path\r | |
78 | FdtDevicePathSize = GetDevicePathSize (DefaultFdtDevicePath);\r | |
79 | Status = GetEnvironmentVariable ((CHAR16 *)L"FDT", DefaultFdtDevicePath, &FdtDevicePathSize, (VOID **)&FdtDevicePath);\r | |
80 | ASSERT_EFI_ERROR(Status);\r | |
81 | \r | |
82 | Status = BdsBootLinux (BootOption->FilePathList,\r | |
83 | Initrd, // Initrd\r | |
84 | (CHAR8*)(LinuxArguments + 1),\r | |
85 | FdtDevicePath);\r | |
a6e97d28 | 86 | }\r |
87 | } else {\r | |
88 | Status = BdsStartEfiApplication (mImageHandle, BootOption->FilePathList);\r | |
89 | }\r | |
ea46ebbe | 90 | \r |
91 | return Status;\r | |
92 | }\r | |
93 | \r | |
94 | EFI_STATUS\r | |
95 | BootOptionParseLoadOption (\r | |
96 | IN EFI_LOAD_OPTION EfiLoadOption,\r | |
97 | IN UINTN EfiLoadOptionSize,\r | |
98 | OUT BDS_LOAD_OPTION **BdsLoadOption\r | |
99 | )\r | |
100 | {\r | |
101 | BDS_LOAD_OPTION *LoadOption;\r | |
102 | UINTN FilePathListLength;\r | |
103 | UINTN DescriptionLength;\r | |
104 | \r | |
105 | if (EfiLoadOption == NULL) {\r | |
106 | return EFI_INVALID_PARAMETER;\r | |
107 | }\r | |
108 | \r | |
109 | if (EfiLoadOptionSize < sizeof(UINT32) + sizeof(UINT16) + sizeof(CHAR16) + sizeof(EFI_DEVICE_PATH_PROTOCOL)) {\r | |
110 | return EFI_BAD_BUFFER_SIZE;\r | |
111 | }\r | |
112 | \r | |
113 | LoadOption = (BDS_LOAD_OPTION*)AllocatePool(sizeof(BDS_LOAD_OPTION));\r | |
114 | if (LoadOption == NULL) {\r | |
115 | return EFI_OUT_OF_RESOURCES;\r | |
116 | }\r | |
117 | \r | |
118 | LoadOption->LoadOption = EfiLoadOption;\r | |
119 | LoadOption->LoadOptionSize = EfiLoadOptionSize;\r | |
120 | \r | |
121 | LoadOption->Attributes = *(UINT32*)EfiLoadOption;\r | |
122 | FilePathListLength = *(UINT16*)(EfiLoadOption + sizeof(UINT32));\r | |
123 | LoadOption->Description = (CHAR16*)(EfiLoadOption + sizeof(UINT32) + sizeof(UINT16));\r | |
124 | DescriptionLength = StrSize (LoadOption->Description);\r | |
125 | LoadOption->FilePathList = (EFI_DEVICE_PATH_PROTOCOL*)(EfiLoadOption + sizeof(UINT32) + sizeof(UINT16) + DescriptionLength);\r | |
126 | \r | |
127 | if ((UINTN)((UINT8*)LoadOption->FilePathList + FilePathListLength - EfiLoadOption) == EfiLoadOptionSize) {\r | |
128 | LoadOption->OptionalData = NULL;\r | |
129 | } else {\r | |
130 | LoadOption->OptionalData = (BDS_LOADER_OPTIONAL_DATA *)((UINT8*)LoadOption->FilePathList + FilePathListLength);\r | |
131 | }\r | |
132 | \r | |
133 | *BdsLoadOption = LoadOption;\r | |
134 | return EFI_SUCCESS;\r | |
135 | }\r | |
136 | \r | |
137 | EFI_STATUS\r | |
138 | BootOptionFromLoadOptionVariable (\r | |
139 | IN UINT16 LoadOptionIndex,\r | |
140 | OUT BDS_LOAD_OPTION **BdsLoadOption\r | |
141 | )\r | |
142 | {\r | |
143 | EFI_STATUS Status;\r | |
144 | CHAR16 BootVariableName[9];\r | |
145 | EFI_LOAD_OPTION EfiLoadOption;\r | |
146 | UINTN EfiLoadOptionSize;\r | |
147 | \r | |
148 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", LoadOptionIndex);\r | |
149 | \r | |
150 | Status = GetEnvironmentVariable (BootVariableName, NULL, &EfiLoadOptionSize, (VOID**)&EfiLoadOption);\r | |
151 | if (!EFI_ERROR(Status)) {\r | |
152 | Status = BootOptionParseLoadOption (EfiLoadOption,EfiLoadOptionSize,BdsLoadOption);\r | |
153 | if (!EFI_ERROR(Status)) {\r | |
154 | (*BdsLoadOption)->LoadOptionIndex = LoadOptionIndex;\r | |
155 | }\r | |
156 | }\r | |
157 | \r | |
158 | return Status;\r | |
159 | }\r | |
160 | \r | |
161 | EFI_STATUS\r | |
162 | BootOptionList (\r | |
163 | IN OUT LIST_ENTRY *BootOptionList\r | |
164 | )\r | |
165 | {\r | |
a6e97d28 | 166 | EFI_STATUS Status;\r |
167 | UINTN Index;\r | |
168 | UINT16* BootOrder;\r | |
169 | UINTN BootOrderSize;\r | |
170 | BDS_LOAD_OPTION* BdsLoadOption;\r | |
171 | BDS_LOAD_OPTION_ENTRY* BdsLoadOptionEntry;\r | |
ea46ebbe | 172 | \r |
173 | InitializeListHead (BootOptionList);\r | |
174 | \r | |
175 | // Get the Boot Option Order from the environment variable\r | |
176 | Status = GetEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r | |
177 | if (EFI_ERROR(Status)) {\r | |
178 | return Status;\r | |
179 | }\r | |
180 | \r | |
181 | for (Index = 0; Index < BootOrderSize / sizeof (UINT16); Index++) {\r | |
182 | Status = BootOptionFromLoadOptionVariable (BootOrder[Index],&BdsLoadOption);\r | |
183 | if (!EFI_ERROR(Status)) {\r | |
a6e97d28 | 184 | BdsLoadOptionEntry = (BDS_LOAD_OPTION_ENTRY*)AllocatePool(sizeof(BDS_LOAD_OPTION_ENTRY));\r |
185 | BdsLoadOptionEntry->BdsLoadOption = BdsLoadOption;\r | |
186 | InsertTailList (BootOptionList,&BdsLoadOptionEntry->Link);\r | |
ea46ebbe | 187 | }\r |
188 | }\r | |
189 | \r | |
190 | return EFI_SUCCESS;\r | |
191 | }\r | |
192 | \r | |
193 | UINT16\r | |
194 | BootOptionAllocateBootIndex (\r | |
195 | VOID\r | |
196 | )\r | |
197 | {\r | |
198 | EFI_STATUS Status;\r | |
199 | UINTN Index;\r | |
200 | UINT32 BootIndex;\r | |
201 | UINT16 *BootOrder;\r | |
202 | UINTN BootOrderSize;\r | |
203 | BOOLEAN Found;\r | |
204 | \r | |
205 | // Get the Boot Option Order from the environment variable\r | |
206 | Status = GetEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r | |
207 | if (!EFI_ERROR(Status)) {\r | |
208 | for (BootIndex = 0; BootIndex <= 0xFFFF; BootIndex++) {\r | |
209 | Found = FALSE;\r | |
210 | for (Index = 0; Index < BootOrderSize / sizeof (UINT16); Index++) {\r | |
211 | if (BootOrder[Index] == BootIndex) {\r | |
212 | Found = TRUE;\r | |
213 | break;\r | |
214 | }\r | |
215 | }\r | |
216 | if (!Found) {\r | |
217 | return BootIndex;\r | |
218 | }\r | |
219 | }\r | |
220 | }\r | |
221 | // Return the first index\r | |
222 | return 0;\r | |
223 | }\r | |
224 | \r | |
225 | STATIC\r | |
226 | EFI_STATUS\r | |
227 | BootOptionSetFields (\r | |
c60ea9a8 | 228 | IN BDS_LOAD_OPTION* BootOption,\r |
229 | IN UINT32 Attributes,\r | |
230 | IN CHAR16* BootDescription,\r | |
231 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r | |
2ccfb71e | 232 | IN ARM_BDS_LOADER_TYPE BootType,\r |
233 | IN ARM_BDS_LOADER_ARGUMENTS* BootArguments\r | |
ea46ebbe | 234 | )\r |
235 | {\r | |
2ccfb71e | 236 | EFI_LOAD_OPTION EfiLoadOption;\r |
237 | UINTN EfiLoadOptionSize;\r | |
238 | UINTN BootDescriptionSize;\r | |
239 | UINTN BootOptionalDataSize;\r | |
240 | UINT16 FilePathListLength;\r | |
241 | UINT8* EfiLoadOptionPtr;\r | |
242 | UINT8* InitrdPathListPtr;\r | |
243 | UINTN OptionalDataSize;\r | |
244 | ARM_BDS_LINUX_ARGUMENTS* DestLinuxArguments;\r | |
245 | ARM_BDS_LINUX_ARGUMENTS* SrcLinuxArguments;\r | |
ea46ebbe | 246 | \r |
247 | // If we are overwriting an existent Boot Option then we have to free previously allocated memory\r | |
248 | if (BootOption->LoadOption) {\r | |
249 | FreePool(BootOption->LoadOption);\r | |
250 | }\r | |
251 | \r | |
2ccfb71e | 252 | BootDescriptionSize = StrSize (BootDescription);\r |
253 | BootOptionalDataSize = sizeof(ARM_BDS_LOADER_OPTIONAL_DATA_HEADER);\r | |
254 | if ((BootType == BDS_LOADER_KERNEL_LINUX_ATAG) || (BootType == BDS_LOADER_KERNEL_LINUX_FDT)) {\r | |
255 | BootOptionalDataSize += sizeof(ARM_BDS_LINUX_ARGUMENTS) + BootArguments->LinuxArguments.CmdLineSize + BootArguments->LinuxArguments.InitrdSize;\r | |
256 | }\r | |
ea46ebbe | 257 | \r |
258 | // Compute the size of the FilePath list\r | |
2ccfb71e | 259 | FilePathListLength = GetUnalignedDevicePathSize (DevicePath);\r |
656416bc | 260 | \r |
ea46ebbe | 261 | // Allocate the memory for the EFI Load Option\r |
262 | EfiLoadOptionSize = sizeof(UINT32) + sizeof(UINT16) + BootDescriptionSize + FilePathListLength + BootOptionalDataSize;\r | |
263 | EfiLoadOption = (EFI_LOAD_OPTION)AllocatePool(EfiLoadOptionSize);\r | |
264 | EfiLoadOptionPtr = EfiLoadOption;\r | |
265 | \r | |
266 | //\r | |
267 | // Populate the EFI Load Option and BDS Boot Option structures\r | |
268 | //\r | |
269 | \r | |
270 | // Attributes fields\r | |
271 | BootOption->Attributes = Attributes;\r | |
272 | *(UINT32*)EfiLoadOptionPtr = Attributes;\r | |
273 | EfiLoadOptionPtr += sizeof(UINT32);\r | |
274 | \r | |
275 | // FilePath List fields\r | |
276 | BootOption->FilePathListLength = FilePathListLength;\r | |
277 | *(UINT16*)EfiLoadOptionPtr = FilePathListLength;\r | |
278 | EfiLoadOptionPtr += sizeof(UINT16);\r | |
279 | \r | |
280 | // Boot description fields\r | |
281 | BootOption->Description = (CHAR16*)EfiLoadOptionPtr;\r | |
282 | CopyMem (EfiLoadOptionPtr, BootDescription, BootDescriptionSize);\r | |
283 | EfiLoadOptionPtr += BootDescriptionSize;\r | |
284 | \r | |
285 | // File path fields\r | |
286 | BootOption->FilePathList = (EFI_DEVICE_PATH_PROTOCOL*)EfiLoadOptionPtr;\r | |
2ccfb71e | 287 | CopyMem (EfiLoadOptionPtr, DevicePath, FilePathListLength);\r |
288 | EfiLoadOptionPtr += FilePathListLength;\r | |
ea46ebbe | 289 | \r |
290 | // Optional Data fields, Do unaligned writes\r | |
2ccfb71e | 291 | BootOption->OptionalData = EfiLoadOptionPtr;\r |
292 | WriteUnaligned32 ((UINT32 *)EfiLoadOptionPtr, ARM_BDS_OPTIONAL_DATA_SIGNATURE);\r | |
293 | WriteUnaligned32 ((UINT32 *)(EfiLoadOptionPtr + 4), BootType);\r | |
ea46ebbe | 294 | \r |
2ccfb71e | 295 | OptionalDataSize = sizeof(ARM_BDS_LOADER_OPTIONAL_DATA_HEADER);\r |
ea46ebbe | 296 | \r |
2ccfb71e | 297 | if ((BootType == BDS_LOADER_KERNEL_LINUX_ATAG) || (BootType == BDS_LOADER_KERNEL_LINUX_FDT)) {\r |
298 | SrcLinuxArguments = &(BootArguments->LinuxArguments);\r | |
299 | DestLinuxArguments = &((ARM_BDS_LOADER_OPTIONAL_DATA*)EfiLoadOptionPtr)->Arguments.LinuxArguments;\r | |
656416bc | 300 | \r |
2ccfb71e | 301 | WriteUnaligned16 ((UINT16 *)&(DestLinuxArguments->CmdLineSize), SrcLinuxArguments->CmdLineSize);\r |
302 | WriteUnaligned16 ((UINT16 *)&(DestLinuxArguments->InitrdSize), SrcLinuxArguments->InitrdSize);\r | |
303 | OptionalDataSize += sizeof (ARM_BDS_LINUX_ARGUMENTS);\r | |
656416bc | 304 | \r |
2ccfb71e | 305 | if (SrcLinuxArguments->CmdLineSize > 0) {\r |
306 | CopyMem ((VOID*)(DestLinuxArguments + 1), (VOID*)(SrcLinuxArguments + 1), SrcLinuxArguments->CmdLineSize);\r | |
307 | OptionalDataSize += SrcLinuxArguments->CmdLineSize;\r | |
308 | }\r | |
656416bc | 309 | \r |
2ccfb71e | 310 | if (SrcLinuxArguments->InitrdSize > 0) {\r |
311 | InitrdPathListPtr = (UINT8*)((UINTN)(DestLinuxArguments + 1) + SrcLinuxArguments->CmdLineSize);\r | |
312 | CopyMem (InitrdPathListPtr, (VOID*)((UINTN)(SrcLinuxArguments + 1) + SrcLinuxArguments->CmdLineSize), SrcLinuxArguments->InitrdSize);\r | |
656416bc | 313 | }\r |
314 | }\r | |
2ccfb71e | 315 | BootOption->OptionalDataSize = OptionalDataSize;\r |
316 | \r | |
6bab33c7 | 317 | // If this function is called at the creation of the Boot Device entry (not at the update) the\r |
318 | // BootOption->LoadOptionSize must be zero then we get a new BootIndex for this entry\r | |
319 | if (BootOption->LoadOptionSize == 0) {\r | |
2ccfb71e | 320 | BootOption->LoadOptionIndex = BootOptionAllocateBootIndex ();\r |
6bab33c7 | 321 | }\r |
322 | \r | |
ea46ebbe | 323 | // Fill the EFI Load option fields\r |
ea46ebbe | 324 | BootOption->LoadOption = EfiLoadOption;\r |
325 | BootOption->LoadOptionSize = EfiLoadOptionSize;\r | |
326 | \r | |
327 | return EFI_SUCCESS;\r | |
328 | }\r | |
329 | \r | |
330 | EFI_STATUS\r | |
331 | BootOptionCreate (\r | |
c60ea9a8 | 332 | IN UINT32 Attributes,\r |
333 | IN CHAR16* BootDescription,\r | |
ea46ebbe | 334 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r |
2ccfb71e | 335 | IN ARM_BDS_LOADER_TYPE BootType,\r |
336 | IN ARM_BDS_LOADER_ARGUMENTS* BootArguments,\r | |
a6e97d28 | 337 | OUT BDS_LOAD_OPTION** BdsLoadOption\r |
ea46ebbe | 338 | )\r |
339 | {\r | |
a6e97d28 | 340 | EFI_STATUS Status;\r |
341 | BDS_LOAD_OPTION_ENTRY* BootOptionEntry;\r | |
342 | BDS_LOAD_OPTION* BootOption;\r | |
343 | CHAR16 BootVariableName[9];\r | |
344 | UINT16* BootOrder;\r | |
345 | UINTN BootOrderSize;\r | |
ea46ebbe | 346 | \r |
347 | //\r | |
348 | // Allocate and fill the memory for the BDS Load Option structure\r | |
349 | //\r | |
a6e97d28 | 350 | BootOptionEntry = (BDS_LOAD_OPTION_ENTRY*)AllocatePool (sizeof (BDS_LOAD_OPTION_ENTRY));\r |
351 | InitializeListHead (&BootOptionEntry->Link);\r | |
352 | BootOptionEntry->BdsLoadOption = (BDS_LOAD_OPTION*)AllocateZeroPool (sizeof(BDS_LOAD_OPTION));\r | |
ea46ebbe | 353 | \r |
a6e97d28 | 354 | BootOption = BootOptionEntry->BdsLoadOption;\r |
ea46ebbe | 355 | BootOptionSetFields (BootOption, Attributes, BootDescription, DevicePath, BootType, BootArguments);\r |
356 | \r | |
357 | //\r | |
358 | // Set the related environment variables\r | |
359 | //\r | |
360 | \r | |
361 | // Create Boot#### environment variable\r | |
362 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", BootOption->LoadOptionIndex);\r | |
363 | Status = gRT->SetVariable (\r | |
364 | BootVariableName,\r | |
365 | &gEfiGlobalVariableGuid,\r | |
366 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
367 | BootOption->LoadOptionSize,\r | |
368 | BootOption->LoadOption\r | |
369 | );\r | |
370 | \r | |
371 | // Add the new Boot Index to the list\r | |
372 | Status = GetEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r | |
373 | if (!EFI_ERROR(Status)) {\r | |
374 | BootOrder = ReallocatePool (BootOrderSize, BootOrderSize + sizeof(UINT16), BootOrder);\r | |
375 | // Add the new index at the end\r | |
376 | BootOrder[BootOrderSize / sizeof(UINT16)] = BootOption->LoadOptionIndex;\r | |
377 | BootOrderSize += sizeof(UINT16);\r | |
378 | } else {\r | |
379 | // BootOrder does not exist. Create it\r | |
380 | BootOrderSize = sizeof(UINT16);\r | |
381 | BootOrder = &(BootOption->LoadOptionIndex);\r | |
382 | }\r | |
383 | \r | |
384 | // Update (or Create) the BootOrder environment variable\r | |
385 | Status = gRT->SetVariable (\r | |
386 | L"BootOrder",\r | |
387 | &gEfiGlobalVariableGuid,\r | |
388 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
389 | BootOrderSize,\r | |
390 | BootOrder\r | |
391 | );\r | |
392 | \r | |
393 | *BdsLoadOption = BootOption;\r | |
394 | return Status;\r | |
395 | }\r | |
396 | \r | |
397 | EFI_STATUS\r | |
398 | BootOptionUpdate (\r | |
2ccfb71e | 399 | IN BDS_LOAD_OPTION* BdsLoadOption,\r |
400 | IN UINT32 Attributes,\r | |
401 | IN CHAR16* BootDescription,\r | |
ea46ebbe | 402 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r |
2ccfb71e | 403 | IN ARM_BDS_LOADER_TYPE BootType,\r |
404 | IN ARM_BDS_LOADER_ARGUMENTS* BootArguments\r | |
ea46ebbe | 405 | )\r |
406 | {\r | |
407 | EFI_STATUS Status;\r | |
ea46ebbe | 408 | CHAR16 BootVariableName[9];\r |
409 | \r | |
410 | // Update the BDS Load Option structure\r | |
411 | BootOptionSetFields (BdsLoadOption, Attributes, BootDescription, DevicePath, BootType, BootArguments);\r | |
412 | \r | |
413 | // Update the related environment variables\r | |
6bab33c7 | 414 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", BdsLoadOption->LoadOptionIndex);\r |
415 | \r | |
ea46ebbe | 416 | Status = gRT->SetVariable (\r |
417 | BootVariableName,\r | |
418 | &gEfiGlobalVariableGuid,\r | |
419 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
6bab33c7 | 420 | BdsLoadOption->LoadOptionSize,\r |
421 | BdsLoadOption->LoadOption\r | |
ea46ebbe | 422 | );\r |
423 | \r | |
424 | return Status;\r | |
425 | }\r | |
426 | \r | |
427 | EFI_STATUS\r | |
428 | BootOptionDelete (\r | |
429 | IN BDS_LOAD_OPTION *BootOption\r | |
430 | )\r | |
431 | {\r | |
a6e97d28 | 432 | UINTN Index;\r |
433 | UINTN BootOrderSize;\r | |
434 | UINT16* BootOrder;\r | |
435 | UINTN BootOrderCount;\r | |
436 | EFI_STATUS Status;\r | |
ea46ebbe | 437 | \r |
438 | // Remove the entry from the BootOrder environment variable\r | |
439 | Status = GetEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r | |
440 | if (!EFI_ERROR(Status)) {\r | |
441 | BootOrderCount = BootOrderSize / sizeof(UINT16);\r | |
442 | \r | |
443 | // Find the index of the removed entry\r | |
444 | for (Index = 0; Index < BootOrderCount; Index++) {\r | |
445 | if (BootOrder[Index] == BootOption->LoadOptionIndex) {\r | |
446 | // If it the last entry we do not need to rearrange the BootOrder list\r | |
447 | if (Index + 1 != BootOrderCount) {\r | |
448 | CopyMem (&BootOrder[Index],&BootOrder[Index+1], BootOrderCount - (Index + 1));\r | |
449 | }\r | |
450 | break;\r | |
451 | }\r | |
452 | }\r | |
453 | \r | |
454 | // Update the BootOrder environment variable\r | |
455 | Status = gRT->SetVariable (\r | |
456 | L"BootOrder",\r | |
457 | &gEfiGlobalVariableGuid,\r | |
458 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
459 | BootOrderSize - sizeof(UINT16),\r | |
460 | BootOrder\r | |
461 | );\r | |
462 | }\r | |
463 | \r | |
464 | return EFI_SUCCESS;\r | |
465 | }\r |