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ea46ebbe | 1 | /** @file\r |
2 | *\r | |
b148591a | 3 | * Copyright (c) 2011-2012, 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 | |
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 |
76d17c31 | 57 | Status = BdsBootLinuxAtag (BootOption->FilePathList,\r |
2ccfb71e | 58 | Initrd, // Initrd\r |
76d17c31 | 59 | (CHAR8*)(LinuxArguments + 1)); // CmdLine\r |
2ccfb71e | 60 | } else if (LoaderType == BDS_LOADER_KERNEL_LINUX_FDT) {\r |
61 | LinuxArguments = &(OptionalData->Arguments.LinuxArguments);\r | |
62 | CmdLineSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->CmdLineSize);\r | |
63 | InitrdSize = ReadUnaligned16 ((CONST UINT16*)&LinuxArguments->InitrdSize);\r | |
64 | \r | |
65 | if (InitrdSize > 0) {\r | |
66 | Initrd = GetAlignedDevicePath ((EFI_DEVICE_PATH*)((UINTN)(LinuxArguments + 1) + CmdLineSize));\r | |
67 | } else {\r | |
68 | Initrd = NULL;\r | |
69 | }\r | |
70 | \r | |
71 | // Get the default FDT device path\r | |
72 | Status = gBS->LocateProtocol (&gEfiDevicePathFromTextProtocolGuid, NULL, (VOID **)&EfiDevicePathFromTextProtocol);\r | |
73 | ASSERT_EFI_ERROR(Status);\r | |
74 | DefaultFdtDevicePath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath ((CHAR16*)PcdGetPtr(PcdFdtDevicePath));\r | |
75 | \r | |
76 | // Get the FDT device path\r | |
77 | FdtDevicePathSize = GetDevicePathSize (DefaultFdtDevicePath);\r | |
c0658bd6 | 78 | Status = GetEnvironmentVariable ((CHAR16 *)L"Fdt", DefaultFdtDevicePath, &FdtDevicePathSize, (VOID **)&FdtDevicePath);\r |
2ccfb71e | 79 | ASSERT_EFI_ERROR(Status);\r |
80 | \r | |
76d17c31 | 81 | Status = BdsBootLinuxFdt (BootOption->FilePathList,\r |
2ccfb71e | 82 | Initrd, // Initrd\r |
83 | (CHAR8*)(LinuxArguments + 1),\r | |
84 | FdtDevicePath);\r | |
b148591a | 85 | \r |
86 | FreePool (FdtDevicePath);\r | |
a6e97d28 | 87 | }\r |
88 | } else {\r | |
2755d844 | 89 | Status = BdsStartEfiApplication (mImageHandle, BootOption->FilePathList, BootOption->OptionalDataSize, BootOption->OptionalData);\r |
a6e97d28 | 90 | }\r |
ea46ebbe | 91 | \r |
92 | return Status;\r | |
93 | }\r | |
94 | \r | |
ea46ebbe | 95 | EFI_STATUS\r |
96 | BootOptionList (\r | |
97 | IN OUT LIST_ENTRY *BootOptionList\r | |
98 | )\r | |
99 | {\r | |
a6e97d28 | 100 | EFI_STATUS Status;\r |
101 | UINTN Index;\r | |
102 | UINT16* BootOrder;\r | |
103 | UINTN BootOrderSize;\r | |
104 | BDS_LOAD_OPTION* BdsLoadOption;\r | |
105 | BDS_LOAD_OPTION_ENTRY* BdsLoadOptionEntry;\r | |
ea46ebbe | 106 | \r |
107 | InitializeListHead (BootOptionList);\r | |
108 | \r | |
109 | // Get the Boot Option Order from the environment variable\r | |
110 | Status = GetEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r | |
111 | if (EFI_ERROR(Status)) {\r | |
112 | return Status;\r | |
113 | }\r | |
114 | \r | |
115 | for (Index = 0; Index < BootOrderSize / sizeof (UINT16); Index++) {\r | |
4aa24170 | 116 | Status = BootOptionFromLoadOptionIndex (BootOrder[Index], &BdsLoadOption);\r |
ea46ebbe | 117 | if (!EFI_ERROR(Status)) {\r |
a6e97d28 | 118 | BdsLoadOptionEntry = (BDS_LOAD_OPTION_ENTRY*)AllocatePool(sizeof(BDS_LOAD_OPTION_ENTRY));\r |
119 | BdsLoadOptionEntry->BdsLoadOption = BdsLoadOption;\r | |
120 | InsertTailList (BootOptionList,&BdsLoadOptionEntry->Link);\r | |
ea46ebbe | 121 | }\r |
122 | }\r | |
123 | \r | |
b148591a | 124 | FreePool (BootOrder);\r |
125 | \r | |
ea46ebbe | 126 | return EFI_SUCCESS;\r |
127 | }\r | |
128 | \r | |
ea46ebbe | 129 | STATIC\r |
130 | EFI_STATUS\r | |
131 | BootOptionSetFields (\r | |
c60ea9a8 | 132 | IN BDS_LOAD_OPTION* BootOption,\r |
133 | IN UINT32 Attributes,\r | |
134 | IN CHAR16* BootDescription,\r | |
135 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r | |
2ccfb71e | 136 | IN ARM_BDS_LOADER_TYPE BootType,\r |
137 | IN ARM_BDS_LOADER_ARGUMENTS* BootArguments\r | |
ea46ebbe | 138 | )\r |
139 | {\r | |
2ccfb71e | 140 | EFI_LOAD_OPTION EfiLoadOption;\r |
141 | UINTN EfiLoadOptionSize;\r | |
142 | UINTN BootDescriptionSize;\r | |
143 | UINTN BootOptionalDataSize;\r | |
144 | UINT16 FilePathListLength;\r | |
145 | UINT8* EfiLoadOptionPtr;\r | |
146 | UINT8* InitrdPathListPtr;\r | |
147 | UINTN OptionalDataSize;\r | |
148 | ARM_BDS_LINUX_ARGUMENTS* DestLinuxArguments;\r | |
149 | ARM_BDS_LINUX_ARGUMENTS* SrcLinuxArguments;\r | |
ea46ebbe | 150 | \r |
151 | // If we are overwriting an existent Boot Option then we have to free previously allocated memory\r | |
152 | if (BootOption->LoadOption) {\r | |
153 | FreePool(BootOption->LoadOption);\r | |
154 | }\r | |
155 | \r | |
2ccfb71e | 156 | BootDescriptionSize = StrSize (BootDescription);\r |
157 | BootOptionalDataSize = sizeof(ARM_BDS_LOADER_OPTIONAL_DATA_HEADER);\r | |
158 | if ((BootType == BDS_LOADER_KERNEL_LINUX_ATAG) || (BootType == BDS_LOADER_KERNEL_LINUX_FDT)) {\r | |
159 | BootOptionalDataSize += sizeof(ARM_BDS_LINUX_ARGUMENTS) + BootArguments->LinuxArguments.CmdLineSize + BootArguments->LinuxArguments.InitrdSize;\r | |
160 | }\r | |
ea46ebbe | 161 | \r |
162 | // Compute the size of the FilePath list\r | |
2ccfb71e | 163 | FilePathListLength = GetUnalignedDevicePathSize (DevicePath);\r |
656416bc | 164 | \r |
ea46ebbe | 165 | // Allocate the memory for the EFI Load Option\r |
166 | EfiLoadOptionSize = sizeof(UINT32) + sizeof(UINT16) + BootDescriptionSize + FilePathListLength + BootOptionalDataSize;\r | |
167 | EfiLoadOption = (EFI_LOAD_OPTION)AllocatePool(EfiLoadOptionSize);\r | |
168 | EfiLoadOptionPtr = EfiLoadOption;\r | |
169 | \r | |
170 | //\r | |
171 | // Populate the EFI Load Option and BDS Boot Option structures\r | |
172 | //\r | |
173 | \r | |
174 | // Attributes fields\r | |
175 | BootOption->Attributes = Attributes;\r | |
176 | *(UINT32*)EfiLoadOptionPtr = Attributes;\r | |
177 | EfiLoadOptionPtr += sizeof(UINT32);\r | |
178 | \r | |
179 | // FilePath List fields\r | |
180 | BootOption->FilePathListLength = FilePathListLength;\r | |
181 | *(UINT16*)EfiLoadOptionPtr = FilePathListLength;\r | |
182 | EfiLoadOptionPtr += sizeof(UINT16);\r | |
183 | \r | |
184 | // Boot description fields\r | |
185 | BootOption->Description = (CHAR16*)EfiLoadOptionPtr;\r | |
186 | CopyMem (EfiLoadOptionPtr, BootDescription, BootDescriptionSize);\r | |
187 | EfiLoadOptionPtr += BootDescriptionSize;\r | |
188 | \r | |
189 | // File path fields\r | |
190 | BootOption->FilePathList = (EFI_DEVICE_PATH_PROTOCOL*)EfiLoadOptionPtr;\r | |
2ccfb71e | 191 | CopyMem (EfiLoadOptionPtr, DevicePath, FilePathListLength);\r |
192 | EfiLoadOptionPtr += FilePathListLength;\r | |
ea46ebbe | 193 | \r |
194 | // Optional Data fields, Do unaligned writes\r | |
2ccfb71e | 195 | BootOption->OptionalData = EfiLoadOptionPtr;\r |
196 | WriteUnaligned32 ((UINT32 *)EfiLoadOptionPtr, ARM_BDS_OPTIONAL_DATA_SIGNATURE);\r | |
197 | WriteUnaligned32 ((UINT32 *)(EfiLoadOptionPtr + 4), BootType);\r | |
ea46ebbe | 198 | \r |
2ccfb71e | 199 | OptionalDataSize = sizeof(ARM_BDS_LOADER_OPTIONAL_DATA_HEADER);\r |
ea46ebbe | 200 | \r |
2ccfb71e | 201 | if ((BootType == BDS_LOADER_KERNEL_LINUX_ATAG) || (BootType == BDS_LOADER_KERNEL_LINUX_FDT)) {\r |
202 | SrcLinuxArguments = &(BootArguments->LinuxArguments);\r | |
203 | DestLinuxArguments = &((ARM_BDS_LOADER_OPTIONAL_DATA*)EfiLoadOptionPtr)->Arguments.LinuxArguments;\r | |
656416bc | 204 | \r |
2ccfb71e | 205 | WriteUnaligned16 ((UINT16 *)&(DestLinuxArguments->CmdLineSize), SrcLinuxArguments->CmdLineSize);\r |
206 | WriteUnaligned16 ((UINT16 *)&(DestLinuxArguments->InitrdSize), SrcLinuxArguments->InitrdSize);\r | |
207 | OptionalDataSize += sizeof (ARM_BDS_LINUX_ARGUMENTS);\r | |
656416bc | 208 | \r |
2ccfb71e | 209 | if (SrcLinuxArguments->CmdLineSize > 0) {\r |
210 | CopyMem ((VOID*)(DestLinuxArguments + 1), (VOID*)(SrcLinuxArguments + 1), SrcLinuxArguments->CmdLineSize);\r | |
211 | OptionalDataSize += SrcLinuxArguments->CmdLineSize;\r | |
212 | }\r | |
656416bc | 213 | \r |
2ccfb71e | 214 | if (SrcLinuxArguments->InitrdSize > 0) {\r |
215 | InitrdPathListPtr = (UINT8*)((UINTN)(DestLinuxArguments + 1) + SrcLinuxArguments->CmdLineSize);\r | |
216 | CopyMem (InitrdPathListPtr, (VOID*)((UINTN)(SrcLinuxArguments + 1) + SrcLinuxArguments->CmdLineSize), SrcLinuxArguments->InitrdSize);\r | |
656416bc | 217 | }\r |
218 | }\r | |
2ccfb71e | 219 | BootOption->OptionalDataSize = OptionalDataSize;\r |
220 | \r | |
6bab33c7 | 221 | // If this function is called at the creation of the Boot Device entry (not at the update) the\r |
222 | // BootOption->LoadOptionSize must be zero then we get a new BootIndex for this entry\r | |
223 | if (BootOption->LoadOptionSize == 0) {\r | |
2ccfb71e | 224 | BootOption->LoadOptionIndex = BootOptionAllocateBootIndex ();\r |
6bab33c7 | 225 | }\r |
226 | \r | |
ea46ebbe | 227 | // Fill the EFI Load option fields\r |
ea46ebbe | 228 | BootOption->LoadOption = EfiLoadOption;\r |
229 | BootOption->LoadOptionSize = EfiLoadOptionSize;\r | |
230 | \r | |
231 | return EFI_SUCCESS;\r | |
232 | }\r | |
233 | \r | |
234 | EFI_STATUS\r | |
235 | BootOptionCreate (\r | |
c60ea9a8 | 236 | IN UINT32 Attributes,\r |
237 | IN CHAR16* BootDescription,\r | |
ea46ebbe | 238 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r |
2ccfb71e | 239 | IN ARM_BDS_LOADER_TYPE BootType,\r |
240 | IN ARM_BDS_LOADER_ARGUMENTS* BootArguments,\r | |
a6e97d28 | 241 | OUT BDS_LOAD_OPTION** BdsLoadOption\r |
ea46ebbe | 242 | )\r |
243 | {\r | |
a6e97d28 | 244 | EFI_STATUS Status;\r |
245 | BDS_LOAD_OPTION_ENTRY* BootOptionEntry;\r | |
246 | BDS_LOAD_OPTION* BootOption;\r | |
247 | CHAR16 BootVariableName[9];\r | |
248 | UINT16* BootOrder;\r | |
249 | UINTN BootOrderSize;\r | |
ea46ebbe | 250 | \r |
251 | //\r | |
252 | // Allocate and fill the memory for the BDS Load Option structure\r | |
253 | //\r | |
a6e97d28 | 254 | BootOptionEntry = (BDS_LOAD_OPTION_ENTRY*)AllocatePool (sizeof (BDS_LOAD_OPTION_ENTRY));\r |
255 | InitializeListHead (&BootOptionEntry->Link);\r | |
256 | BootOptionEntry->BdsLoadOption = (BDS_LOAD_OPTION*)AllocateZeroPool (sizeof(BDS_LOAD_OPTION));\r | |
ea46ebbe | 257 | \r |
a6e97d28 | 258 | BootOption = BootOptionEntry->BdsLoadOption;\r |
ea46ebbe | 259 | BootOptionSetFields (BootOption, Attributes, BootDescription, DevicePath, BootType, BootArguments);\r |
260 | \r | |
261 | //\r | |
262 | // Set the related environment variables\r | |
263 | //\r | |
264 | \r | |
265 | // Create Boot#### environment variable\r | |
266 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", BootOption->LoadOptionIndex);\r | |
267 | Status = gRT->SetVariable (\r | |
268 | BootVariableName,\r | |
269 | &gEfiGlobalVariableGuid,\r | |
270 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
271 | BootOption->LoadOptionSize,\r | |
272 | BootOption->LoadOption\r | |
273 | );\r | |
274 | \r | |
275 | // Add the new Boot Index to the list\r | |
276 | Status = GetEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r | |
277 | if (!EFI_ERROR(Status)) {\r | |
278 | BootOrder = ReallocatePool (BootOrderSize, BootOrderSize + sizeof(UINT16), BootOrder);\r | |
279 | // Add the new index at the end\r | |
280 | BootOrder[BootOrderSize / sizeof(UINT16)] = BootOption->LoadOptionIndex;\r | |
281 | BootOrderSize += sizeof(UINT16);\r | |
282 | } else {\r | |
283 | // BootOrder does not exist. Create it\r | |
284 | BootOrderSize = sizeof(UINT16);\r | |
285 | BootOrder = &(BootOption->LoadOptionIndex);\r | |
286 | }\r | |
287 | \r | |
288 | // Update (or Create) the BootOrder environment variable\r | |
289 | Status = gRT->SetVariable (\r | |
290 | L"BootOrder",\r | |
291 | &gEfiGlobalVariableGuid,\r | |
292 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
293 | BootOrderSize,\r | |
294 | BootOrder\r | |
295 | );\r | |
296 | \r | |
b148591a | 297 | // We only free it if the UEFI Variable 'BootOrder' was already existing\r |
298 | if (BootOrderSize > sizeof(UINT16)) {\r | |
299 | FreePool (BootOrder);\r | |
300 | }\r | |
301 | \r | |
ea46ebbe | 302 | *BdsLoadOption = BootOption;\r |
303 | return Status;\r | |
304 | }\r | |
305 | \r | |
306 | EFI_STATUS\r | |
307 | BootOptionUpdate (\r | |
2ccfb71e | 308 | IN BDS_LOAD_OPTION* BdsLoadOption,\r |
309 | IN UINT32 Attributes,\r | |
310 | IN CHAR16* BootDescription,\r | |
ea46ebbe | 311 | IN EFI_DEVICE_PATH_PROTOCOL* DevicePath,\r |
2ccfb71e | 312 | IN ARM_BDS_LOADER_TYPE BootType,\r |
313 | IN ARM_BDS_LOADER_ARGUMENTS* BootArguments\r | |
ea46ebbe | 314 | )\r |
315 | {\r | |
316 | EFI_STATUS Status;\r | |
ea46ebbe | 317 | CHAR16 BootVariableName[9];\r |
318 | \r | |
319 | // Update the BDS Load Option structure\r | |
320 | BootOptionSetFields (BdsLoadOption, Attributes, BootDescription, DevicePath, BootType, BootArguments);\r | |
321 | \r | |
322 | // Update the related environment variables\r | |
6bab33c7 | 323 | UnicodeSPrint (BootVariableName, 9 * sizeof(CHAR16), L"Boot%04X", BdsLoadOption->LoadOptionIndex);\r |
324 | \r | |
ea46ebbe | 325 | Status = gRT->SetVariable (\r |
326 | BootVariableName,\r | |
327 | &gEfiGlobalVariableGuid,\r | |
328 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
6bab33c7 | 329 | BdsLoadOption->LoadOptionSize,\r |
330 | BdsLoadOption->LoadOption\r | |
ea46ebbe | 331 | );\r |
332 | \r | |
333 | return Status;\r | |
334 | }\r | |
335 | \r | |
336 | EFI_STATUS\r | |
337 | BootOptionDelete (\r | |
338 | IN BDS_LOAD_OPTION *BootOption\r | |
339 | )\r | |
340 | {\r | |
a6e97d28 | 341 | UINTN Index;\r |
342 | UINTN BootOrderSize;\r | |
343 | UINT16* BootOrder;\r | |
344 | UINTN BootOrderCount;\r | |
345 | EFI_STATUS Status;\r | |
ea46ebbe | 346 | \r |
347 | // Remove the entry from the BootOrder environment variable\r | |
348 | Status = GetEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);\r | |
349 | if (!EFI_ERROR(Status)) {\r | |
350 | BootOrderCount = BootOrderSize / sizeof(UINT16);\r | |
351 | \r | |
352 | // Find the index of the removed entry\r | |
353 | for (Index = 0; Index < BootOrderCount; Index++) {\r | |
354 | if (BootOrder[Index] == BootOption->LoadOptionIndex) {\r | |
355 | // If it the last entry we do not need to rearrange the BootOrder list\r | |
356 | if (Index + 1 != BootOrderCount) {\r | |
357 | CopyMem (&BootOrder[Index],&BootOrder[Index+1], BootOrderCount - (Index + 1));\r | |
358 | }\r | |
359 | break;\r | |
360 | }\r | |
361 | }\r | |
362 | \r | |
363 | // Update the BootOrder environment variable\r | |
364 | Status = gRT->SetVariable (\r | |
365 | L"BootOrder",\r | |
366 | &gEfiGlobalVariableGuid,\r | |
367 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r | |
368 | BootOrderSize - sizeof(UINT16),\r | |
369 | BootOrder\r | |
370 | );\r | |
371 | }\r | |
372 | \r | |
b148591a | 373 | FreePool (BootOrder);\r |
374 | \r | |
ea46ebbe | 375 | return EFI_SUCCESS;\r |
376 | }\r |