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ea46ebbe | 1 | /** @file\r |
2 | *\r | |
c75d3eb6 | 3 | * Copyright (c) 2011-2015, 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 | |
ea46ebbe | 18 | EFI_STATUS\r |
19 | BootOptionStart (\r | |
20 | IN BDS_LOAD_OPTION *BootOption\r | |
21 | )\r | |
22 | {\r | |
8b129b7b OM |
23 | EFI_STATUS Status;\r |
24 | UINT16 LoadOptionIndexSize;\r | |
4c8bb1eb | 25 | \r |
8b129b7b OM |
26 | // Connect all the drivers if the EFI Application is not a EFI OS Loader\r |
27 | if ((BootOption->Attributes & LOAD_OPTION_CATEGORY) == LOAD_OPTION_CATEGORY_APP) {\r | |
28 | BdsConnectAllDrivers ();\r | |
29 | }\r | |
91213ad3 | 30 | \r |
8b129b7b OM |
31 | // Set BootCurrent variable\r |
32 | LoadOptionIndexSize = sizeof (UINT16);\r | |
33 | gRT->SetVariable (L"BootCurrent", &gEfiGlobalVariableGuid,\r | |
34 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
35 | LoadOptionIndexSize, &(BootOption->LoadOptionIndex));\r | |
91213ad3 | 36 | \r |
8b129b7b OM |
37 | Status = BdsStartEfiApplication (gImageHandle, BootOption->FilePathList, BootOption->OptionalDataSize, BootOption->OptionalData);\r |
38 | \r | |
39 | // Clear BootCurrent variable\r | |
40 | LoadOptionIndexSize = sizeof (UINT16);\r | |
41 | gRT->SetVariable (L"BootCurrent", &gEfiGlobalVariableGuid,\r | |
42 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
43 | 0, NULL);\r | |
ea46ebbe | 44 | \r |
45 | return Status;\r | |
46 | }\r | |
47 | \r | |
ea46ebbe | 48 | EFI_STATUS\r |
49 | BootOptionList (\r | |
50 | IN OUT LIST_ENTRY *BootOptionList\r | |
51 | )\r | |
52 | {\r | |
a6e97d28 | 53 | EFI_STATUS Status;\r |
54 | UINTN Index;\r | |
55 | UINT16* BootOrder;\r | |
56 | UINTN BootOrderSize;\r | |
57 | BDS_LOAD_OPTION* BdsLoadOption;\r | |
58 | BDS_LOAD_OPTION_ENTRY* BdsLoadOptionEntry;\r | |
ea46ebbe | 59 | \r |
60 | InitializeListHead (BootOptionList);\r | |
61 | \r | |
62 | // Get the Boot Option Order from the environment variable\r | |
c0b2e477 | 63 | Status = GetGlobalEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r |
ea46ebbe | 64 | if (EFI_ERROR(Status)) {\r |
65 | return Status;\r | |
66 | }\r | |
67 | \r | |
68 | for (Index = 0; Index < BootOrderSize / sizeof (UINT16); Index++) {\r | |
4aa24170 | 69 | Status = BootOptionFromLoadOptionIndex (BootOrder[Index], &BdsLoadOption);\r |
ea46ebbe | 70 | if (!EFI_ERROR(Status)) {\r |
a6e97d28 | 71 | BdsLoadOptionEntry = (BDS_LOAD_OPTION_ENTRY*)AllocatePool(sizeof(BDS_LOAD_OPTION_ENTRY));\r |
72 | BdsLoadOptionEntry->BdsLoadOption = BdsLoadOption;\r | |
73 | InsertTailList (BootOptionList,&BdsLoadOptionEntry->Link);\r | |
ea46ebbe | 74 | }\r |
75 | }\r | |
76 | \r | |
b148591a | 77 | FreePool (BootOrder);\r |
78 | \r | |
ea46ebbe | 79 | return EFI_SUCCESS;\r |
80 | }\r | |
81 | \r | |
ea46ebbe | 82 | STATIC\r |
83 | EFI_STATUS\r | |
84 | BootOptionSetFields (\r | |
c60ea9a8 | 85 | IN BDS_LOAD_OPTION* BootOption,\r |
86 | IN UINT32 Attributes,\r | |
87 | IN CHAR16* BootDescription,\r | |
88 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r | |
90a44ec4 OM |
89 | IN UINT8* OptionalData,\r |
90 | IN UINTN OptionalDataSize\r | |
ea46ebbe | 91 | )\r |
92 | {\r | |
459823d9 | 93 | EFI_LOAD_OPTION *EfiLoadOption;\r |
2ccfb71e | 94 | UINTN EfiLoadOptionSize;\r |
95 | UINTN BootDescriptionSize;\r | |
2ccfb71e | 96 | UINT16 FilePathListLength;\r |
97 | UINT8* EfiLoadOptionPtr;\r | |
ea46ebbe | 98 | \r |
99 | // If we are overwriting an existent Boot Option then we have to free previously allocated memory\r | |
100 | if (BootOption->LoadOption) {\r | |
90a44ec4 | 101 | FreePool (BootOption->LoadOption);\r |
ea46ebbe | 102 | }\r |
103 | \r | |
2ccfb71e | 104 | BootDescriptionSize = StrSize (BootDescription);\r |
90a44ec4 | 105 | \r |
ea46ebbe | 106 | // Compute the size of the FilePath list\r |
2ccfb71e | 107 | FilePathListLength = GetUnalignedDevicePathSize (DevicePath);\r |
656416bc | 108 | \r |
ea46ebbe | 109 | // Allocate the memory for the EFI Load Option\r |
90a44ec4 | 110 | EfiLoadOptionSize = sizeof(UINT32) + sizeof(UINT16) + BootDescriptionSize + FilePathListLength + OptionalDataSize;\r |
459823d9 AB |
111 | EfiLoadOption = (EFI_LOAD_OPTION *)AllocatePool(EfiLoadOptionSize);\r |
112 | EfiLoadOptionPtr = (UINT8 *)EfiLoadOption;\r | |
ea46ebbe | 113 | \r |
114 | //\r | |
115 | // Populate the EFI Load Option and BDS Boot Option structures\r | |
116 | //\r | |
117 | \r | |
118 | // Attributes fields\r | |
119 | BootOption->Attributes = Attributes;\r | |
120 | *(UINT32*)EfiLoadOptionPtr = Attributes;\r | |
121 | EfiLoadOptionPtr += sizeof(UINT32);\r | |
122 | \r | |
123 | // FilePath List fields\r | |
124 | BootOption->FilePathListLength = FilePathListLength;\r | |
125 | *(UINT16*)EfiLoadOptionPtr = FilePathListLength;\r | |
126 | EfiLoadOptionPtr += sizeof(UINT16);\r | |
127 | \r | |
128 | // Boot description fields\r | |
129 | BootOption->Description = (CHAR16*)EfiLoadOptionPtr;\r | |
130 | CopyMem (EfiLoadOptionPtr, BootDescription, BootDescriptionSize);\r | |
131 | EfiLoadOptionPtr += BootDescriptionSize;\r | |
132 | \r | |
133 | // File path fields\r | |
134 | BootOption->FilePathList = (EFI_DEVICE_PATH_PROTOCOL*)EfiLoadOptionPtr;\r | |
2ccfb71e | 135 | CopyMem (EfiLoadOptionPtr, DevicePath, FilePathListLength);\r |
136 | EfiLoadOptionPtr += FilePathListLength;\r | |
ea46ebbe | 137 | \r |
138 | // Optional Data fields, Do unaligned writes\r | |
2ccfb71e | 139 | BootOption->OptionalData = EfiLoadOptionPtr;\r |
ea46ebbe | 140 | \r |
8b129b7b OM |
141 | if (OptionalData != NULL) {\r |
142 | CopyMem (BootOption->OptionalData, OptionalData, OptionalDataSize);\r | |
656416bc | 143 | }\r |
8b129b7b | 144 | \r |
2ccfb71e | 145 | BootOption->OptionalDataSize = OptionalDataSize;\r |
146 | \r | |
6bab33c7 | 147 | // If this function is called at the creation of the Boot Device entry (not at the update) the\r |
148 | // BootOption->LoadOptionSize must be zero then we get a new BootIndex for this entry\r | |
149 | if (BootOption->LoadOptionSize == 0) {\r | |
2ccfb71e | 150 | BootOption->LoadOptionIndex = BootOptionAllocateBootIndex ();\r |
6bab33c7 | 151 | }\r |
152 | \r | |
ea46ebbe | 153 | // Fill the EFI Load option fields\r |
ea46ebbe | 154 | BootOption->LoadOption = EfiLoadOption;\r |
155 | BootOption->LoadOptionSize = EfiLoadOptionSize;\r | |
156 | \r | |
157 | return EFI_SUCCESS;\r | |
158 | }\r | |
159 | \r | |
160 | EFI_STATUS\r | |
161 | BootOptionCreate (\r | |
c60ea9a8 | 162 | IN UINT32 Attributes,\r |
163 | IN CHAR16* BootDescription,\r | |
ea46ebbe | 164 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r |
90a44ec4 OM |
165 | IN UINT8* OptionalData,\r |
166 | IN UINTN OptionalDataSize,\r | |
a6e97d28 | 167 | OUT BDS_LOAD_OPTION** BdsLoadOption\r |
ea46ebbe | 168 | )\r |
169 | {\r | |
a6e97d28 | 170 | EFI_STATUS Status;\r |
171 | BDS_LOAD_OPTION_ENTRY* BootOptionEntry;\r | |
172 | BDS_LOAD_OPTION* BootOption;\r | |
173 | CHAR16 BootVariableName[9];\r | |
174 | UINT16* BootOrder;\r | |
175 | UINTN BootOrderSize;\r | |
ea46ebbe | 176 | \r |
177 | //\r | |
178 | // Allocate and fill the memory for the BDS Load Option structure\r | |
179 | //\r | |
a6e97d28 | 180 | BootOptionEntry = (BDS_LOAD_OPTION_ENTRY*)AllocatePool (sizeof (BDS_LOAD_OPTION_ENTRY));\r |
181 | InitializeListHead (&BootOptionEntry->Link);\r | |
182 | BootOptionEntry->BdsLoadOption = (BDS_LOAD_OPTION*)AllocateZeroPool (sizeof(BDS_LOAD_OPTION));\r | |
ea46ebbe | 183 | \r |
a6e97d28 | 184 | BootOption = BootOptionEntry->BdsLoadOption;\r |
8b129b7b | 185 | BootOptionSetFields (BootOption, Attributes, BootDescription, DevicePath, OptionalData, OptionalDataSize);\r |
ea46ebbe | 186 | \r |
187 | //\r | |
188 | // Set the related environment variables\r | |
189 | //\r | |
190 | \r | |
191 | // Create Boot#### environment variable\r | |
192 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", BootOption->LoadOptionIndex);\r | |
193 | Status = gRT->SetVariable (\r | |
194 | BootVariableName,\r | |
195 | &gEfiGlobalVariableGuid,\r | |
196 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
197 | BootOption->LoadOptionSize,\r | |
198 | BootOption->LoadOption\r | |
199 | );\r | |
200 | \r | |
201 | // Add the new Boot Index to the list\r | |
c0b2e477 | 202 | Status = GetGlobalEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r |
ea46ebbe | 203 | if (!EFI_ERROR(Status)) {\r |
204 | BootOrder = ReallocatePool (BootOrderSize, BootOrderSize + sizeof(UINT16), BootOrder);\r | |
205 | // Add the new index at the end\r | |
206 | BootOrder[BootOrderSize / sizeof(UINT16)] = BootOption->LoadOptionIndex;\r | |
207 | BootOrderSize += sizeof(UINT16);\r | |
208 | } else {\r | |
209 | // BootOrder does not exist. Create it\r | |
210 | BootOrderSize = sizeof(UINT16);\r | |
211 | BootOrder = &(BootOption->LoadOptionIndex);\r | |
212 | }\r | |
213 | \r | |
214 | // Update (or Create) the BootOrder environment variable\r | |
215 | Status = gRT->SetVariable (\r | |
216 | L"BootOrder",\r | |
217 | &gEfiGlobalVariableGuid,\r | |
218 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
219 | BootOrderSize,\r | |
220 | BootOrder\r | |
221 | );\r | |
222 | \r | |
b148591a | 223 | // We only free it if the UEFI Variable 'BootOrder' was already existing\r |
224 | if (BootOrderSize > sizeof(UINT16)) {\r | |
225 | FreePool (BootOrder);\r | |
226 | }\r | |
227 | \r | |
ea46ebbe | 228 | *BdsLoadOption = BootOption;\r |
229 | return Status;\r | |
230 | }\r | |
231 | \r | |
232 | EFI_STATUS\r | |
233 | BootOptionUpdate (\r | |
2ccfb71e | 234 | IN BDS_LOAD_OPTION* BdsLoadOption,\r |
235 | IN UINT32 Attributes,\r | |
236 | IN CHAR16* BootDescription,\r | |
ea46ebbe | 237 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r |
90a44ec4 OM |
238 | IN UINT8* OptionalData,\r |
239 | IN UINTN OptionalDataSize\r | |
ea46ebbe | 240 | )\r |
241 | {\r | |
242 | EFI_STATUS Status;\r | |
ea46ebbe | 243 | CHAR16 BootVariableName[9];\r |
244 | \r | |
245 | // Update the BDS Load Option structure\r | |
8b129b7b | 246 | BootOptionSetFields (BdsLoadOption, Attributes, BootDescription, DevicePath, OptionalData, OptionalDataSize);\r |
ea46ebbe | 247 | \r |
248 | // Update the related environment variables\r | |
6bab33c7 | 249 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", BdsLoadOption->LoadOptionIndex);\r |
250 | \r | |
ea46ebbe | 251 | Status = gRT->SetVariable (\r |
252 | BootVariableName,\r | |
253 | &gEfiGlobalVariableGuid,\r | |
254 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
6bab33c7 | 255 | BdsLoadOption->LoadOptionSize,\r |
256 | BdsLoadOption->LoadOption\r | |
ea46ebbe | 257 | );\r |
258 | \r | |
259 | return Status;\r | |
260 | }\r | |
261 | \r | |
262 | EFI_STATUS\r | |
263 | BootOptionDelete (\r | |
264 | IN BDS_LOAD_OPTION *BootOption\r | |
265 | )\r | |
266 | {\r | |
a6e97d28 | 267 | UINTN Index;\r |
268 | UINTN BootOrderSize;\r | |
269 | UINT16* BootOrder;\r | |
270 | UINTN BootOrderCount;\r | |
c41bffd3 | 271 | CHAR16 BootVariableName[9];\r |
a6e97d28 | 272 | EFI_STATUS Status;\r |
ea46ebbe | 273 | \r |
274 | // Remove the entry from the BootOrder environment variable\r | |
c0b2e477 | 275 | Status = GetGlobalEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r |
ea46ebbe | 276 | if (!EFI_ERROR(Status)) {\r |
277 | BootOrderCount = BootOrderSize / sizeof(UINT16);\r | |
278 | \r | |
279 | // Find the index of the removed entry\r | |
280 | for (Index = 0; Index < BootOrderCount; Index++) {\r | |
281 | if (BootOrder[Index] == BootOption->LoadOptionIndex) {\r | |
282 | // If it the last entry we do not need to rearrange the BootOrder list\r | |
283 | if (Index + 1 != BootOrderCount) {\r | |
9127a094 | 284 | CopyMem (\r |
285 | &BootOrder[Index],\r | |
286 | &BootOrder[Index + 1],\r | |
287 | (BootOrderCount - (Index + 1)) * sizeof(UINT16)\r | |
288 | );\r | |
ea46ebbe | 289 | }\r |
290 | break;\r | |
291 | }\r | |
292 | }\r | |
293 | \r | |
294 | // Update the BootOrder environment variable\r | |
295 | Status = gRT->SetVariable (\r | |
296 | L"BootOrder",\r | |
297 | &gEfiGlobalVariableGuid,\r | |
298 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
299 | BootOrderSize - sizeof(UINT16),\r | |
300 | BootOrder\r | |
301 | );\r | |
302 | }\r | |
303 | \r | |
c41bffd3 HL |
304 | // Delete Boot#### environment variable\r |
305 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", BootOption->LoadOptionIndex);\r | |
306 | Status = gRT->SetVariable (\r | |
307 | BootVariableName,\r | |
308 | &gEfiGlobalVariableGuid,\r | |
309 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
310 | 0,\r | |
311 | NULL\r | |
312 | );\r | |
313 | \r | |
b148591a | 314 | FreePool (BootOrder);\r |
315 | \r | |
c41bffd3 | 316 | return Status;\r |
ea46ebbe | 317 | }\r |