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ea46ebbe | 1 | /** @file\r |
2 | *\r | |
9127a094 | 3 | * Copyright (c) 2011-2013, ARM Limited. All rights reserved.\r |
ea46ebbe | 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 | |
c0b2e477 | 15 | #include <Guid/ArmGlobalVariableHob.h>\r |
ea46ebbe | 16 | #include "BdsInternal.h"\r |
17 | \r | |
18 | extern EFI_HANDLE mImageHandle;\r | |
19 | \r | |
20 | EFI_STATUS\r | |
21 | BootOptionStart (\r | |
22 | IN BDS_LOAD_OPTION *BootOption\r | |
23 | )\r | |
24 | {\r | |
c60ea9a8 | 25 | EFI_STATUS Status;\r |
c60ea9a8 | 26 | EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL* EfiDevicePathFromTextProtocol;\r |
27 | UINT32 LoaderType;\r | |
2ccfb71e | 28 | ARM_BDS_LOADER_OPTIONAL_DATA* OptionalData;\r |
29 | ARM_BDS_LINUX_ARGUMENTS* LinuxArguments;\r | |
30 | EFI_DEVICE_PATH_PROTOCOL* FdtDevicePath;\r | |
31 | EFI_DEVICE_PATH_PROTOCOL* DefaultFdtDevicePath;\r | |
32 | UINTN FdtDevicePathSize;\r | |
33 | UINTN CmdLineSize;\r | |
34 | UINTN InitrdSize;\r | |
35 | EFI_DEVICE_PATH* Initrd;\r | |
91213ad3 | 36 | UINT16 LoadOptionIndexSize;\r |
2ccfb71e | 37 | \r |
a6e97d28 | 38 | if (IS_ARM_BDS_BOOTENTRY (BootOption)) {\r |
2ccfb71e | 39 | Status = EFI_UNSUPPORTED;\r |
40 | OptionalData = BootOption->OptionalData;\r | |
41 | LoaderType = ReadUnaligned32 ((CONST UINT32*)&OptionalData->Header.LoaderType);\r | |
42 | \r | |
43 | if (LoaderType == BDS_LOADER_EFI_APPLICATION) {\r | |
44 | // Need to connect every drivers to ensure no dependencies are missing for the application\r | |
45 | BdsConnectAllDrivers();\r | |
46 | \r | |
47 | Status = BdsStartEfiApplication (mImageHandle, BootOption->FilePathList, 0, NULL);\r | |
48 | } else if (LoaderType == BDS_LOADER_KERNEL_LINUX_ATAG) {\r | |
49 | LinuxArguments = &(OptionalData->Arguments.LinuxArguments);\r | |
50 | CmdLineSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->CmdLineSize);\r | |
51 | InitrdSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->InitrdSize);\r | |
52 | \r | |
53 | if (InitrdSize > 0) {\r | |
54 | Initrd = GetAlignedDevicePath ((EFI_DEVICE_PATH*)((UINTN)(LinuxArguments + 1) + CmdLineSize));\r | |
55 | } else {\r | |
56 | Initrd = NULL;\r | |
57 | }\r | |
ea46ebbe | 58 | \r |
76d17c31 | 59 | Status = BdsBootLinuxAtag (BootOption->FilePathList,\r |
2ccfb71e | 60 | Initrd, // Initrd\r |
76d17c31 | 61 | (CHAR8*)(LinuxArguments + 1)); // CmdLine\r |
2ccfb71e | 62 | } else if (LoaderType == BDS_LOADER_KERNEL_LINUX_FDT) {\r |
63 | LinuxArguments = &(OptionalData->Arguments.LinuxArguments);\r | |
64 | CmdLineSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->CmdLineSize);\r | |
65 | InitrdSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->InitrdSize);\r | |
66 | \r | |
67 | if (InitrdSize > 0) {\r | |
68 | Initrd = GetAlignedDevicePath ((EFI_DEVICE_PATH*)((UINTN)(LinuxArguments + 1) + CmdLineSize));\r | |
69 | } else {\r | |
70 | Initrd = NULL;\r | |
71 | }\r | |
72 | \r | |
73 | // Get the default FDT device path\r | |
74 | Status = gBS->LocateProtocol (&gEfiDevicePathFromTextProtocolGuid, NULL, (VOID **)&EfiDevicePathFromTextProtocol);\r | |
75 | ASSERT_EFI_ERROR(Status);\r | |
76 | DefaultFdtDevicePath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath ((CHAR16*)PcdGetPtr(PcdFdtDevicePath));\r | |
77 | \r | |
78 | // Get the FDT device path\r | |
79 | FdtDevicePathSize = GetDevicePathSize (DefaultFdtDevicePath);\r | |
c0b2e477 | 80 | Status = GetEnvironmentVariable ((CHAR16 *)L"Fdt", &gArmGlobalVariableGuid,\r |
81 | DefaultFdtDevicePath, &FdtDevicePathSize, (VOID **)&FdtDevicePath);\r | |
2ccfb71e | 82 | ASSERT_EFI_ERROR(Status);\r |
83 | \r | |
76d17c31 | 84 | Status = BdsBootLinuxFdt (BootOption->FilePathList,\r |
2ccfb71e | 85 | Initrd, // Initrd\r |
86 | (CHAR8*)(LinuxArguments + 1),\r | |
87 | FdtDevicePath);\r | |
b148591a | 88 | \r |
79480c8d | 89 | FreePool (DefaultFdtDevicePath);\r |
b148591a | 90 | FreePool (FdtDevicePath);\r |
a6e97d28 | 91 | }\r |
92 | } else {\r | |
91213ad3 | 93 | // Set BootCurrent variable\r |
94 | LoadOptionIndexSize = sizeof(UINT16);\r | |
95 | gRT->SetVariable (L"BootCurrent", &gEfiGlobalVariableGuid,\r | |
96 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
97 | LoadOptionIndexSize, &(BootOption->LoadOptionIndex));\r | |
98 | \r | |
2755d844 | 99 | Status = BdsStartEfiApplication (mImageHandle, BootOption->FilePathList, BootOption->OptionalDataSize, BootOption->OptionalData);\r |
91213ad3 | 100 | \r |
101 | // Clear BootCurrent variable\r | |
102 | LoadOptionIndexSize = sizeof(UINT16);\r | |
103 | gRT->SetVariable (L"BootCurrent", &gEfiGlobalVariableGuid,\r | |
104 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
105 | 0, NULL);\r | |
a6e97d28 | 106 | }\r |
ea46ebbe | 107 | \r |
108 | return Status;\r | |
109 | }\r | |
110 | \r | |
ea46ebbe | 111 | EFI_STATUS\r |
112 | BootOptionList (\r | |
113 | IN OUT LIST_ENTRY *BootOptionList\r | |
114 | )\r | |
115 | {\r | |
a6e97d28 | 116 | EFI_STATUS Status;\r |
117 | UINTN Index;\r | |
118 | UINT16* BootOrder;\r | |
119 | UINTN BootOrderSize;\r | |
120 | BDS_LOAD_OPTION* BdsLoadOption;\r | |
121 | BDS_LOAD_OPTION_ENTRY* BdsLoadOptionEntry;\r | |
ea46ebbe | 122 | \r |
123 | InitializeListHead (BootOptionList);\r | |
124 | \r | |
125 | // Get the Boot Option Order from the environment variable\r | |
c0b2e477 | 126 | Status = GetGlobalEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r |
ea46ebbe | 127 | if (EFI_ERROR(Status)) {\r |
128 | return Status;\r | |
129 | }\r | |
130 | \r | |
131 | for (Index = 0; Index < BootOrderSize / sizeof (UINT16); Index++) {\r | |
4aa24170 | 132 | Status = BootOptionFromLoadOptionIndex (BootOrder[Index], &BdsLoadOption);\r |
ea46ebbe | 133 | if (!EFI_ERROR(Status)) {\r |
a6e97d28 | 134 | BdsLoadOptionEntry = (BDS_LOAD_OPTION_ENTRY*)AllocatePool(sizeof(BDS_LOAD_OPTION_ENTRY));\r |
135 | BdsLoadOptionEntry->BdsLoadOption = BdsLoadOption;\r | |
136 | InsertTailList (BootOptionList,&BdsLoadOptionEntry->Link);\r | |
ea46ebbe | 137 | }\r |
138 | }\r | |
139 | \r | |
b148591a | 140 | FreePool (BootOrder);\r |
141 | \r | |
ea46ebbe | 142 | return EFI_SUCCESS;\r |
143 | }\r | |
144 | \r | |
ea46ebbe | 145 | STATIC\r |
146 | EFI_STATUS\r | |
147 | BootOptionSetFields (\r | |
c60ea9a8 | 148 | IN BDS_LOAD_OPTION* BootOption,\r |
149 | IN UINT32 Attributes,\r | |
150 | IN CHAR16* BootDescription,\r | |
151 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r | |
2ccfb71e | 152 | IN ARM_BDS_LOADER_TYPE BootType,\r |
90a44ec4 OM |
153 | IN UINT8* OptionalData,\r |
154 | IN UINTN OptionalDataSize\r | |
ea46ebbe | 155 | )\r |
156 | {\r | |
2ccfb71e | 157 | EFI_LOAD_OPTION EfiLoadOption;\r |
158 | UINTN EfiLoadOptionSize;\r | |
159 | UINTN BootDescriptionSize;\r | |
2ccfb71e | 160 | UINT16 FilePathListLength;\r |
161 | UINT8* EfiLoadOptionPtr;\r | |
162 | UINT8* InitrdPathListPtr;\r | |
2ccfb71e | 163 | ARM_BDS_LINUX_ARGUMENTS* DestLinuxArguments;\r |
164 | ARM_BDS_LINUX_ARGUMENTS* SrcLinuxArguments;\r | |
90a44ec4 | 165 | ARM_BDS_LOADER_ARGUMENTS* BootArguments;\r |
ea46ebbe | 166 | \r |
167 | // If we are overwriting an existent Boot Option then we have to free previously allocated memory\r | |
168 | if (BootOption->LoadOption) {\r | |
90a44ec4 | 169 | FreePool (BootOption->LoadOption);\r |
ea46ebbe | 170 | }\r |
171 | \r | |
2ccfb71e | 172 | BootDescriptionSize = StrSize (BootDescription);\r |
90a44ec4 OM |
173 | \r |
174 | // Fixup the size in case of entry specific to ArmPlatformPkg/Bds\r | |
2ccfb71e | 175 | if ((BootType == BDS_LOADER_KERNEL_LINUX_ATAG) || (BootType == BDS_LOADER_KERNEL_LINUX_FDT)) {\r |
90a44ec4 | 176 | OptionalDataSize += sizeof(ARM_BDS_LOADER_OPTIONAL_DATA_HEADER);\r |
2ccfb71e | 177 | }\r |
ea46ebbe | 178 | \r |
179 | // Compute the size of the FilePath list\r | |
2ccfb71e | 180 | FilePathListLength = GetUnalignedDevicePathSize (DevicePath);\r |
656416bc | 181 | \r |
ea46ebbe | 182 | // Allocate the memory for the EFI Load Option\r |
90a44ec4 | 183 | EfiLoadOptionSize = sizeof(UINT32) + sizeof(UINT16) + BootDescriptionSize + FilePathListLength + OptionalDataSize;\r |
ea46ebbe | 184 | EfiLoadOption = (EFI_LOAD_OPTION)AllocatePool(EfiLoadOptionSize);\r |
185 | EfiLoadOptionPtr = EfiLoadOption;\r | |
186 | \r | |
187 | //\r | |
188 | // Populate the EFI Load Option and BDS Boot Option structures\r | |
189 | //\r | |
190 | \r | |
191 | // Attributes fields\r | |
192 | BootOption->Attributes = Attributes;\r | |
193 | *(UINT32*)EfiLoadOptionPtr = Attributes;\r | |
194 | EfiLoadOptionPtr += sizeof(UINT32);\r | |
195 | \r | |
196 | // FilePath List fields\r | |
197 | BootOption->FilePathListLength = FilePathListLength;\r | |
198 | *(UINT16*)EfiLoadOptionPtr = FilePathListLength;\r | |
199 | EfiLoadOptionPtr += sizeof(UINT16);\r | |
200 | \r | |
201 | // Boot description fields\r | |
202 | BootOption->Description = (CHAR16*)EfiLoadOptionPtr;\r | |
203 | CopyMem (EfiLoadOptionPtr, BootDescription, BootDescriptionSize);\r | |
204 | EfiLoadOptionPtr += BootDescriptionSize;\r | |
205 | \r | |
206 | // File path fields\r | |
207 | BootOption->FilePathList = (EFI_DEVICE_PATH_PROTOCOL*)EfiLoadOptionPtr;\r | |
2ccfb71e | 208 | CopyMem (EfiLoadOptionPtr, DevicePath, FilePathListLength);\r |
209 | EfiLoadOptionPtr += FilePathListLength;\r | |
ea46ebbe | 210 | \r |
211 | // Optional Data fields, Do unaligned writes\r | |
2ccfb71e | 212 | BootOption->OptionalData = EfiLoadOptionPtr;\r |
ea46ebbe | 213 | \r |
2ccfb71e | 214 | if ((BootType == BDS_LOADER_KERNEL_LINUX_ATAG) || (BootType == BDS_LOADER_KERNEL_LINUX_FDT)) {\r |
90a44ec4 OM |
215 | // Write the header\r |
216 | WriteUnaligned32 ((UINT32 *)EfiLoadOptionPtr, ARM_BDS_OPTIONAL_DATA_SIGNATURE);\r | |
217 | WriteUnaligned32 ((UINT32 *)(EfiLoadOptionPtr + 4), BootType);\r | |
218 | \r | |
219 | BootArguments = (ARM_BDS_LOADER_ARGUMENTS*)OptionalData;\r | |
2ccfb71e | 220 | SrcLinuxArguments = &(BootArguments->LinuxArguments);\r |
221 | DestLinuxArguments = &((ARM_BDS_LOADER_OPTIONAL_DATA*)EfiLoadOptionPtr)->Arguments.LinuxArguments;\r | |
656416bc | 222 | \r |
2ccfb71e | 223 | WriteUnaligned16 ((UINT16 *)&(DestLinuxArguments->CmdLineSize), SrcLinuxArguments->CmdLineSize);\r |
224 | WriteUnaligned16 ((UINT16 *)&(DestLinuxArguments->InitrdSize), SrcLinuxArguments->InitrdSize);\r | |
656416bc | 225 | \r |
2ccfb71e | 226 | if (SrcLinuxArguments->CmdLineSize > 0) {\r |
227 | CopyMem ((VOID*)(DestLinuxArguments + 1), (VOID*)(SrcLinuxArguments + 1), SrcLinuxArguments->CmdLineSize);\r | |
2ccfb71e | 228 | }\r |
656416bc | 229 | \r |
2ccfb71e | 230 | if (SrcLinuxArguments->InitrdSize > 0) {\r |
231 | InitrdPathListPtr = (UINT8*)((UINTN)(DestLinuxArguments + 1) + SrcLinuxArguments->CmdLineSize);\r | |
232 | CopyMem (InitrdPathListPtr, (VOID*)((UINTN)(SrcLinuxArguments + 1) + SrcLinuxArguments->CmdLineSize), SrcLinuxArguments->InitrdSize);\r | |
656416bc | 233 | }\r |
90a44ec4 OM |
234 | } else {\r |
235 | CopyMem (BootOption->OptionalData, OptionalData, OptionalDataSize);\r | |
656416bc | 236 | }\r |
2ccfb71e | 237 | BootOption->OptionalDataSize = OptionalDataSize;\r |
238 | \r | |
6bab33c7 | 239 | // If this function is called at the creation of the Boot Device entry (not at the update) the\r |
240 | // BootOption->LoadOptionSize must be zero then we get a new BootIndex for this entry\r | |
241 | if (BootOption->LoadOptionSize == 0) {\r | |
2ccfb71e | 242 | BootOption->LoadOptionIndex = BootOptionAllocateBootIndex ();\r |
6bab33c7 | 243 | }\r |
244 | \r | |
ea46ebbe | 245 | // Fill the EFI Load option fields\r |
ea46ebbe | 246 | BootOption->LoadOption = EfiLoadOption;\r |
247 | BootOption->LoadOptionSize = EfiLoadOptionSize;\r | |
248 | \r | |
249 | return EFI_SUCCESS;\r | |
250 | }\r | |
251 | \r | |
252 | EFI_STATUS\r | |
253 | BootOptionCreate (\r | |
c60ea9a8 | 254 | IN UINT32 Attributes,\r |
255 | IN CHAR16* BootDescription,\r | |
ea46ebbe | 256 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r |
2ccfb71e | 257 | IN ARM_BDS_LOADER_TYPE BootType,\r |
90a44ec4 OM |
258 | IN UINT8* OptionalData,\r |
259 | IN UINTN OptionalDataSize,\r | |
a6e97d28 | 260 | OUT BDS_LOAD_OPTION** BdsLoadOption\r |
ea46ebbe | 261 | )\r |
262 | {\r | |
a6e97d28 | 263 | EFI_STATUS Status;\r |
264 | BDS_LOAD_OPTION_ENTRY* BootOptionEntry;\r | |
265 | BDS_LOAD_OPTION* BootOption;\r | |
266 | CHAR16 BootVariableName[9];\r | |
267 | UINT16* BootOrder;\r | |
268 | UINTN BootOrderSize;\r | |
ea46ebbe | 269 | \r |
270 | //\r | |
271 | // Allocate and fill the memory for the BDS Load Option structure\r | |
272 | //\r | |
a6e97d28 | 273 | BootOptionEntry = (BDS_LOAD_OPTION_ENTRY*)AllocatePool (sizeof (BDS_LOAD_OPTION_ENTRY));\r |
274 | InitializeListHead (&BootOptionEntry->Link);\r | |
275 | BootOptionEntry->BdsLoadOption = (BDS_LOAD_OPTION*)AllocateZeroPool (sizeof(BDS_LOAD_OPTION));\r | |
ea46ebbe | 276 | \r |
a6e97d28 | 277 | BootOption = BootOptionEntry->BdsLoadOption;\r |
90a44ec4 | 278 | BootOptionSetFields (BootOption, Attributes, BootDescription, DevicePath, BootType, OptionalData, OptionalDataSize);\r |
ea46ebbe | 279 | \r |
280 | //\r | |
281 | // Set the related environment variables\r | |
282 | //\r | |
283 | \r | |
284 | // Create Boot#### environment variable\r | |
285 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", BootOption->LoadOptionIndex);\r | |
286 | Status = gRT->SetVariable (\r | |
287 | BootVariableName,\r | |
288 | &gEfiGlobalVariableGuid,\r | |
289 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
290 | BootOption->LoadOptionSize,\r | |
291 | BootOption->LoadOption\r | |
292 | );\r | |
293 | \r | |
294 | // Add the new Boot Index to the list\r | |
c0b2e477 | 295 | Status = GetGlobalEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r |
ea46ebbe | 296 | if (!EFI_ERROR(Status)) {\r |
297 | BootOrder = ReallocatePool (BootOrderSize, BootOrderSize + sizeof(UINT16), BootOrder);\r | |
298 | // Add the new index at the end\r | |
299 | BootOrder[BootOrderSize / sizeof(UINT16)] = BootOption->LoadOptionIndex;\r | |
300 | BootOrderSize += sizeof(UINT16);\r | |
301 | } else {\r | |
302 | // BootOrder does not exist. Create it\r | |
303 | BootOrderSize = sizeof(UINT16);\r | |
304 | BootOrder = &(BootOption->LoadOptionIndex);\r | |
305 | }\r | |
306 | \r | |
307 | // Update (or Create) the BootOrder environment variable\r | |
308 | Status = gRT->SetVariable (\r | |
309 | L"BootOrder",\r | |
310 | &gEfiGlobalVariableGuid,\r | |
311 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
312 | BootOrderSize,\r | |
313 | BootOrder\r | |
314 | );\r | |
315 | \r | |
b148591a | 316 | // We only free it if the UEFI Variable 'BootOrder' was already existing\r |
317 | if (BootOrderSize > sizeof(UINT16)) {\r | |
318 | FreePool (BootOrder);\r | |
319 | }\r | |
320 | \r | |
ea46ebbe | 321 | *BdsLoadOption = BootOption;\r |
322 | return Status;\r | |
323 | }\r | |
324 | \r | |
325 | EFI_STATUS\r | |
326 | BootOptionUpdate (\r | |
2ccfb71e | 327 | IN BDS_LOAD_OPTION* BdsLoadOption,\r |
328 | IN UINT32 Attributes,\r | |
329 | IN CHAR16* BootDescription,\r | |
ea46ebbe | 330 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r |
2ccfb71e | 331 | IN ARM_BDS_LOADER_TYPE BootType,\r |
90a44ec4 OM |
332 | IN UINT8* OptionalData,\r |
333 | IN UINTN OptionalDataSize\r | |
ea46ebbe | 334 | )\r |
335 | {\r | |
336 | EFI_STATUS Status;\r | |
ea46ebbe | 337 | CHAR16 BootVariableName[9];\r |
338 | \r | |
339 | // Update the BDS Load Option structure\r | |
90a44ec4 | 340 | BootOptionSetFields (BdsLoadOption, Attributes, BootDescription, DevicePath, BootType, OptionalData, OptionalDataSize);\r |
ea46ebbe | 341 | \r |
342 | // Update the related environment variables\r | |
6bab33c7 | 343 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", BdsLoadOption->LoadOptionIndex);\r |
344 | \r | |
ea46ebbe | 345 | Status = gRT->SetVariable (\r |
346 | BootVariableName,\r | |
347 | &gEfiGlobalVariableGuid,\r | |
348 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
6bab33c7 | 349 | BdsLoadOption->LoadOptionSize,\r |
350 | BdsLoadOption->LoadOption\r | |
ea46ebbe | 351 | );\r |
352 | \r | |
353 | return Status;\r | |
354 | }\r | |
355 | \r | |
356 | EFI_STATUS\r | |
357 | BootOptionDelete (\r | |
358 | IN BDS_LOAD_OPTION *BootOption\r | |
359 | )\r | |
360 | {\r | |
a6e97d28 | 361 | UINTN Index;\r |
362 | UINTN BootOrderSize;\r | |
363 | UINT16* BootOrder;\r | |
364 | UINTN BootOrderCount;\r | |
365 | EFI_STATUS Status;\r | |
ea46ebbe | 366 | \r |
367 | // Remove the entry from the BootOrder environment variable\r | |
c0b2e477 | 368 | Status = GetGlobalEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r |
ea46ebbe | 369 | if (!EFI_ERROR(Status)) {\r |
370 | BootOrderCount = BootOrderSize / sizeof(UINT16);\r | |
371 | \r | |
372 | // Find the index of the removed entry\r | |
373 | for (Index = 0; Index < BootOrderCount; Index++) {\r | |
374 | if (BootOrder[Index] == BootOption->LoadOptionIndex) {\r | |
375 | // If it the last entry we do not need to rearrange the BootOrder list\r | |
376 | if (Index + 1 != BootOrderCount) {\r | |
9127a094 | 377 | CopyMem (\r |
378 | &BootOrder[Index],\r | |
379 | &BootOrder[Index + 1],\r | |
380 | (BootOrderCount - (Index + 1)) * sizeof(UINT16)\r | |
381 | );\r | |
ea46ebbe | 382 | }\r |
383 | break;\r | |
384 | }\r | |
385 | }\r | |
386 | \r | |
387 | // Update the BootOrder environment variable\r | |
388 | Status = gRT->SetVariable (\r | |
389 | L"BootOrder",\r | |
390 | &gEfiGlobalVariableGuid,\r | |
391 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
392 | BootOrderSize - sizeof(UINT16),\r | |
393 | BootOrder\r | |
394 | );\r | |
395 | }\r | |
396 | \r | |
b148591a | 397 | FreePool (BootOrder);\r |
398 | \r | |
ea46ebbe | 399 | return EFI_SUCCESS;\r |
400 | }\r |