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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 | |
4c8bb1eb OM |
44 | if ((BootOption->Attributes & LOAD_OPTION_CATEGORY_BOOT) == 0) {\r |
45 | // Need to connect every drivers to ensure no dependencies are missing for the application\r | |
46 | BdsConnectAllDrivers ();\r | |
47 | }\r | |
2ccfb71e | 48 | \r |
49 | Status = BdsStartEfiApplication (mImageHandle, BootOption->FilePathList, 0, NULL);\r | |
50 | } else if (LoaderType == BDS_LOADER_KERNEL_LINUX_ATAG) {\r | |
51 | LinuxArguments = &(OptionalData->Arguments.LinuxArguments);\r | |
52 | CmdLineSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->CmdLineSize);\r | |
53 | InitrdSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->InitrdSize);\r | |
54 | \r | |
55 | if (InitrdSize > 0) {\r | |
56 | Initrd = GetAlignedDevicePath ((EFI_DEVICE_PATH*)((UINTN)(LinuxArguments + 1) + CmdLineSize));\r | |
57 | } else {\r | |
58 | Initrd = NULL;\r | |
59 | }\r | |
ea46ebbe | 60 | \r |
76d17c31 | 61 | Status = BdsBootLinuxAtag (BootOption->FilePathList,\r |
2ccfb71e | 62 | Initrd, // Initrd\r |
76d17c31 | 63 | (CHAR8*)(LinuxArguments + 1)); // CmdLine\r |
2ccfb71e | 64 | } else if (LoaderType == BDS_LOADER_KERNEL_LINUX_FDT) {\r |
65 | LinuxArguments = &(OptionalData->Arguments.LinuxArguments);\r | |
66 | CmdLineSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->CmdLineSize);\r | |
67 | InitrdSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->InitrdSize);\r | |
68 | \r | |
69 | if (InitrdSize > 0) {\r | |
70 | Initrd = GetAlignedDevicePath ((EFI_DEVICE_PATH*)((UINTN)(LinuxArguments + 1) + CmdLineSize));\r | |
71 | } else {\r | |
72 | Initrd = NULL;\r | |
73 | }\r | |
74 | \r | |
75 | // Get the default FDT device path\r | |
76 | Status = gBS->LocateProtocol (&gEfiDevicePathFromTextProtocolGuid, NULL, (VOID **)&EfiDevicePathFromTextProtocol);\r | |
77 | ASSERT_EFI_ERROR(Status);\r | |
78 | DefaultFdtDevicePath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath ((CHAR16*)PcdGetPtr(PcdFdtDevicePath));\r | |
79 | \r | |
80 | // Get the FDT device path\r | |
81 | FdtDevicePathSize = GetDevicePathSize (DefaultFdtDevicePath);\r | |
c0b2e477 | 82 | Status = GetEnvironmentVariable ((CHAR16 *)L"Fdt", &gArmGlobalVariableGuid,\r |
83 | DefaultFdtDevicePath, &FdtDevicePathSize, (VOID **)&FdtDevicePath);\r | |
2ccfb71e | 84 | ASSERT_EFI_ERROR(Status);\r |
85 | \r | |
76d17c31 | 86 | Status = BdsBootLinuxFdt (BootOption->FilePathList,\r |
2ccfb71e | 87 | Initrd, // Initrd\r |
88 | (CHAR8*)(LinuxArguments + 1),\r | |
89 | FdtDevicePath);\r | |
b148591a | 90 | \r |
79480c8d | 91 | FreePool (DefaultFdtDevicePath);\r |
b148591a | 92 | FreePool (FdtDevicePath);\r |
a6e97d28 | 93 | }\r |
94 | } else {\r | |
4c8bb1eb OM |
95 | // Connect all the drivers if the EFI Application is not a EFI OS Loader\r |
96 | if ((BootOption->Attributes & LOAD_OPTION_CATEGORY_BOOT) == 0) {\r | |
97 | BdsConnectAllDrivers ();\r | |
98 | }\r | |
99 | \r | |
91213ad3 | 100 | // Set BootCurrent variable\r |
101 | LoadOptionIndexSize = sizeof(UINT16);\r | |
102 | gRT->SetVariable (L"BootCurrent", &gEfiGlobalVariableGuid,\r | |
103 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
104 | LoadOptionIndexSize, &(BootOption->LoadOptionIndex));\r | |
105 | \r | |
2755d844 | 106 | Status = BdsStartEfiApplication (mImageHandle, BootOption->FilePathList, BootOption->OptionalDataSize, BootOption->OptionalData);\r |
91213ad3 | 107 | \r |
108 | // Clear BootCurrent variable\r | |
109 | LoadOptionIndexSize = sizeof(UINT16);\r | |
110 | gRT->SetVariable (L"BootCurrent", &gEfiGlobalVariableGuid,\r | |
111 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
112 | 0, NULL);\r | |
a6e97d28 | 113 | }\r |
ea46ebbe | 114 | \r |
115 | return Status;\r | |
116 | }\r | |
117 | \r | |
ea46ebbe | 118 | EFI_STATUS\r |
119 | BootOptionList (\r | |
120 | IN OUT LIST_ENTRY *BootOptionList\r | |
121 | )\r | |
122 | {\r | |
a6e97d28 | 123 | EFI_STATUS Status;\r |
124 | UINTN Index;\r | |
125 | UINT16* BootOrder;\r | |
126 | UINTN BootOrderSize;\r | |
127 | BDS_LOAD_OPTION* BdsLoadOption;\r | |
128 | BDS_LOAD_OPTION_ENTRY* BdsLoadOptionEntry;\r | |
ea46ebbe | 129 | \r |
130 | InitializeListHead (BootOptionList);\r | |
131 | \r | |
132 | // Get the Boot Option Order from the environment variable\r | |
c0b2e477 | 133 | Status = GetGlobalEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r |
ea46ebbe | 134 | if (EFI_ERROR(Status)) {\r |
135 | return Status;\r | |
136 | }\r | |
137 | \r | |
138 | for (Index = 0; Index < BootOrderSize / sizeof (UINT16); Index++) {\r | |
4aa24170 | 139 | Status = BootOptionFromLoadOptionIndex (BootOrder[Index], &BdsLoadOption);\r |
ea46ebbe | 140 | if (!EFI_ERROR(Status)) {\r |
a6e97d28 | 141 | BdsLoadOptionEntry = (BDS_LOAD_OPTION_ENTRY*)AllocatePool(sizeof(BDS_LOAD_OPTION_ENTRY));\r |
142 | BdsLoadOptionEntry->BdsLoadOption = BdsLoadOption;\r | |
143 | InsertTailList (BootOptionList,&BdsLoadOptionEntry->Link);\r | |
ea46ebbe | 144 | }\r |
145 | }\r | |
146 | \r | |
b148591a | 147 | FreePool (BootOrder);\r |
148 | \r | |
ea46ebbe | 149 | return EFI_SUCCESS;\r |
150 | }\r | |
151 | \r | |
ea46ebbe | 152 | STATIC\r |
153 | EFI_STATUS\r | |
154 | BootOptionSetFields (\r | |
c60ea9a8 | 155 | IN BDS_LOAD_OPTION* BootOption,\r |
156 | IN UINT32 Attributes,\r | |
157 | IN CHAR16* BootDescription,\r | |
158 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r | |
2ccfb71e | 159 | IN ARM_BDS_LOADER_TYPE BootType,\r |
90a44ec4 OM |
160 | IN UINT8* OptionalData,\r |
161 | IN UINTN OptionalDataSize\r | |
ea46ebbe | 162 | )\r |
163 | {\r | |
2ccfb71e | 164 | EFI_LOAD_OPTION EfiLoadOption;\r |
165 | UINTN EfiLoadOptionSize;\r | |
166 | UINTN BootDescriptionSize;\r | |
2ccfb71e | 167 | UINT16 FilePathListLength;\r |
168 | UINT8* EfiLoadOptionPtr;\r | |
169 | UINT8* InitrdPathListPtr;\r | |
2ccfb71e | 170 | ARM_BDS_LINUX_ARGUMENTS* DestLinuxArguments;\r |
171 | ARM_BDS_LINUX_ARGUMENTS* SrcLinuxArguments;\r | |
90a44ec4 | 172 | ARM_BDS_LOADER_ARGUMENTS* BootArguments;\r |
ea46ebbe | 173 | \r |
174 | // If we are overwriting an existent Boot Option then we have to free previously allocated memory\r | |
175 | if (BootOption->LoadOption) {\r | |
90a44ec4 | 176 | FreePool (BootOption->LoadOption);\r |
ea46ebbe | 177 | }\r |
178 | \r | |
2ccfb71e | 179 | BootDescriptionSize = StrSize (BootDescription);\r |
90a44ec4 OM |
180 | \r |
181 | // Fixup the size in case of entry specific to ArmPlatformPkg/Bds\r | |
2ccfb71e | 182 | if ((BootType == BDS_LOADER_KERNEL_LINUX_ATAG) || (BootType == BDS_LOADER_KERNEL_LINUX_FDT)) {\r |
90a44ec4 | 183 | OptionalDataSize += sizeof(ARM_BDS_LOADER_OPTIONAL_DATA_HEADER);\r |
2ccfb71e | 184 | }\r |
ea46ebbe | 185 | \r |
186 | // Compute the size of the FilePath list\r | |
2ccfb71e | 187 | FilePathListLength = GetUnalignedDevicePathSize (DevicePath);\r |
656416bc | 188 | \r |
ea46ebbe | 189 | // Allocate the memory for the EFI Load Option\r |
90a44ec4 | 190 | EfiLoadOptionSize = sizeof(UINT32) + sizeof(UINT16) + BootDescriptionSize + FilePathListLength + OptionalDataSize;\r |
ea46ebbe | 191 | EfiLoadOption = (EFI_LOAD_OPTION)AllocatePool(EfiLoadOptionSize);\r |
192 | EfiLoadOptionPtr = EfiLoadOption;\r | |
193 | \r | |
194 | //\r | |
195 | // Populate the EFI Load Option and BDS Boot Option structures\r | |
196 | //\r | |
197 | \r | |
198 | // Attributes fields\r | |
199 | BootOption->Attributes = Attributes;\r | |
200 | *(UINT32*)EfiLoadOptionPtr = Attributes;\r | |
201 | EfiLoadOptionPtr += sizeof(UINT32);\r | |
202 | \r | |
203 | // FilePath List fields\r | |
204 | BootOption->FilePathListLength = FilePathListLength;\r | |
205 | *(UINT16*)EfiLoadOptionPtr = FilePathListLength;\r | |
206 | EfiLoadOptionPtr += sizeof(UINT16);\r | |
207 | \r | |
208 | // Boot description fields\r | |
209 | BootOption->Description = (CHAR16*)EfiLoadOptionPtr;\r | |
210 | CopyMem (EfiLoadOptionPtr, BootDescription, BootDescriptionSize);\r | |
211 | EfiLoadOptionPtr += BootDescriptionSize;\r | |
212 | \r | |
213 | // File path fields\r | |
214 | BootOption->FilePathList = (EFI_DEVICE_PATH_PROTOCOL*)EfiLoadOptionPtr;\r | |
2ccfb71e | 215 | CopyMem (EfiLoadOptionPtr, DevicePath, FilePathListLength);\r |
216 | EfiLoadOptionPtr += FilePathListLength;\r | |
ea46ebbe | 217 | \r |
218 | // Optional Data fields, Do unaligned writes\r | |
2ccfb71e | 219 | BootOption->OptionalData = EfiLoadOptionPtr;\r |
ea46ebbe | 220 | \r |
2ccfb71e | 221 | if ((BootType == BDS_LOADER_KERNEL_LINUX_ATAG) || (BootType == BDS_LOADER_KERNEL_LINUX_FDT)) {\r |
90a44ec4 OM |
222 | // Write the header\r |
223 | WriteUnaligned32 ((UINT32 *)EfiLoadOptionPtr, ARM_BDS_OPTIONAL_DATA_SIGNATURE);\r | |
224 | WriteUnaligned32 ((UINT32 *)(EfiLoadOptionPtr + 4), BootType);\r | |
225 | \r | |
226 | BootArguments = (ARM_BDS_LOADER_ARGUMENTS*)OptionalData;\r | |
2ccfb71e | 227 | SrcLinuxArguments = &(BootArguments->LinuxArguments);\r |
228 | DestLinuxArguments = &((ARM_BDS_LOADER_OPTIONAL_DATA*)EfiLoadOptionPtr)->Arguments.LinuxArguments;\r | |
656416bc | 229 | \r |
2ccfb71e | 230 | WriteUnaligned16 ((UINT16 *)&(DestLinuxArguments->CmdLineSize), SrcLinuxArguments->CmdLineSize);\r |
231 | WriteUnaligned16 ((UINT16 *)&(DestLinuxArguments->InitrdSize), SrcLinuxArguments->InitrdSize);\r | |
656416bc | 232 | \r |
2ccfb71e | 233 | if (SrcLinuxArguments->CmdLineSize > 0) {\r |
234 | CopyMem ((VOID*)(DestLinuxArguments + 1), (VOID*)(SrcLinuxArguments + 1), SrcLinuxArguments->CmdLineSize);\r | |
2ccfb71e | 235 | }\r |
656416bc | 236 | \r |
2ccfb71e | 237 | if (SrcLinuxArguments->InitrdSize > 0) {\r |
238 | InitrdPathListPtr = (UINT8*)((UINTN)(DestLinuxArguments + 1) + SrcLinuxArguments->CmdLineSize);\r | |
239 | CopyMem (InitrdPathListPtr, (VOID*)((UINTN)(SrcLinuxArguments + 1) + SrcLinuxArguments->CmdLineSize), SrcLinuxArguments->InitrdSize);\r | |
656416bc | 240 | }\r |
90a44ec4 OM |
241 | } else {\r |
242 | CopyMem (BootOption->OptionalData, OptionalData, OptionalDataSize);\r | |
656416bc | 243 | }\r |
2ccfb71e | 244 | BootOption->OptionalDataSize = OptionalDataSize;\r |
245 | \r | |
6bab33c7 | 246 | // If this function is called at the creation of the Boot Device entry (not at the update) the\r |
247 | // BootOption->LoadOptionSize must be zero then we get a new BootIndex for this entry\r | |
248 | if (BootOption->LoadOptionSize == 0) {\r | |
2ccfb71e | 249 | BootOption->LoadOptionIndex = BootOptionAllocateBootIndex ();\r |
6bab33c7 | 250 | }\r |
251 | \r | |
ea46ebbe | 252 | // Fill the EFI Load option fields\r |
ea46ebbe | 253 | BootOption->LoadOption = EfiLoadOption;\r |
254 | BootOption->LoadOptionSize = EfiLoadOptionSize;\r | |
255 | \r | |
256 | return EFI_SUCCESS;\r | |
257 | }\r | |
258 | \r | |
259 | EFI_STATUS\r | |
260 | BootOptionCreate (\r | |
c60ea9a8 | 261 | IN UINT32 Attributes,\r |
262 | IN CHAR16* BootDescription,\r | |
ea46ebbe | 263 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r |
2ccfb71e | 264 | IN ARM_BDS_LOADER_TYPE BootType,\r |
90a44ec4 OM |
265 | IN UINT8* OptionalData,\r |
266 | IN UINTN OptionalDataSize,\r | |
a6e97d28 | 267 | OUT BDS_LOAD_OPTION** BdsLoadOption\r |
ea46ebbe | 268 | )\r |
269 | {\r | |
a6e97d28 | 270 | EFI_STATUS Status;\r |
271 | BDS_LOAD_OPTION_ENTRY* BootOptionEntry;\r | |
272 | BDS_LOAD_OPTION* BootOption;\r | |
273 | CHAR16 BootVariableName[9];\r | |
274 | UINT16* BootOrder;\r | |
275 | UINTN BootOrderSize;\r | |
ea46ebbe | 276 | \r |
277 | //\r | |
278 | // Allocate and fill the memory for the BDS Load Option structure\r | |
279 | //\r | |
a6e97d28 | 280 | BootOptionEntry = (BDS_LOAD_OPTION_ENTRY*)AllocatePool (sizeof (BDS_LOAD_OPTION_ENTRY));\r |
281 | InitializeListHead (&BootOptionEntry->Link);\r | |
282 | BootOptionEntry->BdsLoadOption = (BDS_LOAD_OPTION*)AllocateZeroPool (sizeof(BDS_LOAD_OPTION));\r | |
ea46ebbe | 283 | \r |
a6e97d28 | 284 | BootOption = BootOptionEntry->BdsLoadOption;\r |
90a44ec4 | 285 | BootOptionSetFields (BootOption, Attributes, BootDescription, DevicePath, BootType, OptionalData, OptionalDataSize);\r |
ea46ebbe | 286 | \r |
287 | //\r | |
288 | // Set the related environment variables\r | |
289 | //\r | |
290 | \r | |
291 | // Create Boot#### environment variable\r | |
292 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", BootOption->LoadOptionIndex);\r | |
293 | Status = gRT->SetVariable (\r | |
294 | BootVariableName,\r | |
295 | &gEfiGlobalVariableGuid,\r | |
296 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
297 | BootOption->LoadOptionSize,\r | |
298 | BootOption->LoadOption\r | |
299 | );\r | |
300 | \r | |
301 | // Add the new Boot Index to the list\r | |
c0b2e477 | 302 | Status = GetGlobalEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r |
ea46ebbe | 303 | if (!EFI_ERROR(Status)) {\r |
304 | BootOrder = ReallocatePool (BootOrderSize, BootOrderSize + sizeof(UINT16), BootOrder);\r | |
305 | // Add the new index at the end\r | |
306 | BootOrder[BootOrderSize / sizeof(UINT16)] = BootOption->LoadOptionIndex;\r | |
307 | BootOrderSize += sizeof(UINT16);\r | |
308 | } else {\r | |
309 | // BootOrder does not exist. Create it\r | |
310 | BootOrderSize = sizeof(UINT16);\r | |
311 | BootOrder = &(BootOption->LoadOptionIndex);\r | |
312 | }\r | |
313 | \r | |
314 | // Update (or Create) the BootOrder environment variable\r | |
315 | Status = gRT->SetVariable (\r | |
316 | L"BootOrder",\r | |
317 | &gEfiGlobalVariableGuid,\r | |
318 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
319 | BootOrderSize,\r | |
320 | BootOrder\r | |
321 | );\r | |
322 | \r | |
b148591a | 323 | // We only free it if the UEFI Variable 'BootOrder' was already existing\r |
324 | if (BootOrderSize > sizeof(UINT16)) {\r | |
325 | FreePool (BootOrder);\r | |
326 | }\r | |
327 | \r | |
ea46ebbe | 328 | *BdsLoadOption = BootOption;\r |
329 | return Status;\r | |
330 | }\r | |
331 | \r | |
332 | EFI_STATUS\r | |
333 | BootOptionUpdate (\r | |
2ccfb71e | 334 | IN BDS_LOAD_OPTION* BdsLoadOption,\r |
335 | IN UINT32 Attributes,\r | |
336 | IN CHAR16* BootDescription,\r | |
ea46ebbe | 337 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r |
2ccfb71e | 338 | IN ARM_BDS_LOADER_TYPE BootType,\r |
90a44ec4 OM |
339 | IN UINT8* OptionalData,\r |
340 | IN UINTN OptionalDataSize\r | |
ea46ebbe | 341 | )\r |
342 | {\r | |
343 | EFI_STATUS Status;\r | |
ea46ebbe | 344 | CHAR16 BootVariableName[9];\r |
345 | \r | |
346 | // Update the BDS Load Option structure\r | |
90a44ec4 | 347 | BootOptionSetFields (BdsLoadOption, Attributes, BootDescription, DevicePath, BootType, OptionalData, OptionalDataSize);\r |
ea46ebbe | 348 | \r |
349 | // Update the related environment variables\r | |
6bab33c7 | 350 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", BdsLoadOption->LoadOptionIndex);\r |
351 | \r | |
ea46ebbe | 352 | Status = gRT->SetVariable (\r |
353 | BootVariableName,\r | |
354 | &gEfiGlobalVariableGuid,\r | |
355 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
6bab33c7 | 356 | BdsLoadOption->LoadOptionSize,\r |
357 | BdsLoadOption->LoadOption\r | |
ea46ebbe | 358 | );\r |
359 | \r | |
360 | return Status;\r | |
361 | }\r | |
362 | \r | |
363 | EFI_STATUS\r | |
364 | BootOptionDelete (\r | |
365 | IN BDS_LOAD_OPTION *BootOption\r | |
366 | )\r | |
367 | {\r | |
a6e97d28 | 368 | UINTN Index;\r |
369 | UINTN BootOrderSize;\r | |
370 | UINT16* BootOrder;\r | |
371 | UINTN BootOrderCount;\r | |
372 | EFI_STATUS Status;\r | |
ea46ebbe | 373 | \r |
374 | // Remove the entry from the BootOrder environment variable\r | |
c0b2e477 | 375 | Status = GetGlobalEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r |
ea46ebbe | 376 | if (!EFI_ERROR(Status)) {\r |
377 | BootOrderCount = BootOrderSize / sizeof(UINT16);\r | |
378 | \r | |
379 | // Find the index of the removed entry\r | |
380 | for (Index = 0; Index < BootOrderCount; Index++) {\r | |
381 | if (BootOrder[Index] == BootOption->LoadOptionIndex) {\r | |
382 | // If it the last entry we do not need to rearrange the BootOrder list\r | |
383 | if (Index + 1 != BootOrderCount) {\r | |
9127a094 | 384 | CopyMem (\r |
385 | &BootOrder[Index],\r | |
386 | &BootOrder[Index + 1],\r | |
387 | (BootOrderCount - (Index + 1)) * sizeof(UINT16)\r | |
388 | );\r | |
ea46ebbe | 389 | }\r |
390 | break;\r | |
391 | }\r | |
392 | }\r | |
393 | \r | |
394 | // Update the BootOrder environment variable\r | |
395 | Status = gRT->SetVariable (\r | |
396 | L"BootOrder",\r | |
397 | &gEfiGlobalVariableGuid,\r | |
398 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
399 | BootOrderSize - sizeof(UINT16),\r | |
400 | BootOrder\r | |
401 | );\r | |
402 | }\r | |
403 | \r | |
b148591a | 404 | FreePool (BootOrder);\r |
405 | \r | |
ea46ebbe | 406 | return EFI_SUCCESS;\r |
407 | }\r |