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878ddf1f | 1 | /** @file\r |
2 | HOB Library.\r | |
3 | \r | |
d958721a | 4 | Copyright (c) 2006 - 2007, Intel Corporation<BR>\r |
878ddf1f | 5 | All rights reserved. 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 | Module Name: HobLib.c\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
58251024 | 17 | #include "HobLib.h"\r |
5f10fa01 | 18 | \r |
878ddf1f | 19 | /**\r |
20 | Returns the pointer to the HOB list.\r | |
21 | \r | |
5f10fa01 | 22 | This function returns the pointer to first HOB in the list.\r |
23 | \r | |
878ddf1f | 24 | @return The pointer to the HOB list.\r |
25 | \r | |
26 | **/\r | |
27 | VOID *\r | |
28 | EFIAPI\r | |
29 | GetHobList (\r | |
30 | VOID\r | |
31 | )\r | |
32 | {\r | |
33 | return gHobList;\r | |
34 | }\r | |
35 | \r | |
36 | /**\r | |
5f10fa01 | 37 | Returns the next instance of a HOB type from the starting HOB.\r |
38 | \r | |
878ddf1f | 39 | This function searches the first instance of a HOB type from the starting HOB pointer. \r |
5f10fa01 | 40 | If there does not exist such HOB type from the starting HOB pointer, it will return NULL.\r |
41 | In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer\r | |
42 | unconditionally: it returns HobStart back if HobStart itself meets the requirement;\r | |
43 | caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.\r | |
44 | If HobStart is NULL, then ASSERT().\r | |
878ddf1f | 45 | \r |
5f10fa01 | 46 | @param Type The HOB type to return.\r |
47 | @param HobStart The starting HOB pointer to search from.\r | |
878ddf1f | 48 | \r |
49 | @return The next instance of a HOB type from the starting HOB.\r | |
50 | \r | |
51 | **/\r | |
52 | VOID *\r | |
53 | EFIAPI\r | |
54 | GetNextHob (\r | |
55 | IN UINT16 Type,\r | |
56 | IN CONST VOID *HobStart\r | |
57 | )\r | |
58 | {\r | |
59 | EFI_PEI_HOB_POINTERS Hob;\r | |
60 | \r | |
61 | ASSERT (HobStart != NULL);\r | |
62 | \r | |
63 | Hob.Raw = (UINT8 *) HobStart;\r | |
64 | //\r | |
5f10fa01 | 65 | // Parse the HOB list until end of list or matching type is found.\r |
878ddf1f | 66 | //\r |
67 | while (!END_OF_HOB_LIST (Hob)) {\r | |
68 | if (Hob.Header->HobType == Type) {\r | |
69 | return Hob.Raw;\r | |
70 | }\r | |
71 | Hob.Raw = GET_NEXT_HOB (Hob);\r | |
72 | }\r | |
73 | return NULL;\r | |
74 | }\r | |
75 | \r | |
76 | /**\r | |
5f10fa01 | 77 | Returns the first instance of a HOB type among the whole HOB list.\r |
78 | \r | |
878ddf1f | 79 | This function searches the first instance of a HOB type among the whole HOB list. \r |
80 | If there does not exist such HOB type in the HOB list, it will return NULL. \r | |
81 | \r | |
5f10fa01 | 82 | @param Type The HOB type to return.\r |
878ddf1f | 83 | \r |
84 | @return The next instance of a HOB type from the starting HOB.\r | |
85 | \r | |
86 | **/\r | |
87 | VOID *\r | |
88 | EFIAPI\r | |
89 | GetFirstHob (\r | |
90 | IN UINT16 Type\r | |
91 | )\r | |
92 | {\r | |
93 | VOID *HobList;\r | |
94 | \r | |
95 | HobList = GetHobList ();\r | |
96 | return GetNextHob (Type, HobList);\r | |
97 | }\r | |
98 | \r | |
99 | /**\r | |
100 | This function searches the first instance of a HOB from the starting HOB pointer. \r | |
101 | Such HOB should satisfy two conditions: \r | |
102 | its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid. \r | |
103 | If there does not exist such HOB from the starting HOB pointer, it will return NULL. \r | |
5f10fa01 | 104 | Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()\r |
105 | to extract the data section and its size info respectively.\r | |
106 | In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer\r | |
107 | unconditionally: it returns HobStart back if HobStart itself meets the requirement;\r | |
108 | caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.\r | |
109 | If Guid is NULL, then ASSERT().\r | |
110 | If HobStart is NULL, then ASSERT().\r | |
878ddf1f | 111 | \r |
5f10fa01 | 112 | @param Guid The GUID to match with in the HOB list.\r |
113 | @param HobStart A pointer to a Guid.\r | |
878ddf1f | 114 | \r |
115 | @return The next instance of the matched GUID HOB from the starting HOB.\r | |
116 | \r | |
117 | **/\r | |
118 | VOID *\r | |
119 | EFIAPI\r | |
120 | GetNextGuidHob (\r | |
121 | IN CONST EFI_GUID *Guid,\r | |
122 | IN CONST VOID *HobStart\r | |
123 | )\r | |
124 | {\r | |
125 | EFI_PEI_HOB_POINTERS GuidHob;\r | |
126 | \r | |
127 | GuidHob.Raw = (UINT8 *) HobStart;\r | |
128 | while ((GuidHob.Raw = GetNextHob (EFI_HOB_TYPE_GUID_EXTENSION, GuidHob.Raw)) != NULL) {\r | |
129 | if (CompareGuid (Guid, &GuidHob.Guid->Name)) {\r | |
130 | break;\r | |
131 | }\r | |
132 | GuidHob.Raw = GET_NEXT_HOB (GuidHob);\r | |
133 | }\r | |
134 | return GuidHob.Raw;\r | |
135 | }\r | |
136 | \r | |
137 | /**\r | |
138 | This function searches the first instance of a HOB among the whole HOB list. \r | |
139 | Such HOB should satisfy two conditions:\r | |
140 | its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid.\r | |
141 | If there does not exist such HOB from the starting HOB pointer, it will return NULL.\r | |
5f10fa01 | 142 | Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()\r |
143 | to extract the data section and its size info respectively.\r | |
144 | If Guid is NULL, then ASSERT().\r | |
878ddf1f | 145 | \r |
5f10fa01 | 146 | @param Guid The GUID to match with in the HOB list.\r |
878ddf1f | 147 | \r |
148 | @return The first instance of the matched GUID HOB among the whole HOB list.\r | |
149 | \r | |
150 | **/\r | |
151 | VOID *\r | |
152 | EFIAPI\r | |
153 | GetFirstGuidHob (\r | |
154 | IN CONST EFI_GUID *Guid\r | |
155 | )\r | |
156 | {\r | |
157 | VOID *HobList;\r | |
158 | \r | |
159 | HobList = GetHobList ();\r | |
160 | return GetNextGuidHob (Guid, HobList);\r | |
161 | }\r | |
162 | \r | |
d958721a | 163 | /**\r |
164 | Get the Boot Mode from the HOB list.\r | |
165 | \r | |
166 | This function returns the system boot mode information from the \r | |
167 | PHIT HOB in HOB list.\r | |
168 | \r | |
169 | @param VOID\r | |
170 | \r | |
171 | @return The Boot Mode.\r | |
172 | \r | |
173 | **/\r | |
174 | EFI_BOOT_MODE\r | |
175 | EFIAPI\r | |
176 | GetBootModeHob (\r | |
177 | VOID\r | |
178 | )\r | |
179 | {\r | |
180 | EFI_HOB_HANDOFF_INFO_TABLE *HandOffHob;\r | |
181 | \r | |
182 | HandOffHob = (EFI_HOB_HANDOFF_INFO_TABLE *) GetHobList ();\r | |
183 | \r | |
184 | return HandOffHob->BootMode;\r | |
185 | }\r | |
878ddf1f | 186 | /**\r |
5f10fa01 | 187 | Builds a HOB for a loaded PE32 module.\r |
188 | \r | |
878ddf1f | 189 | This function builds a HOB for a loaded PE32 module.\r |
5f10fa01 | 190 | It can only be invoked during PEI phase;\r |
191 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
192 | If ModuleName is NULL, then ASSERT().\r | |
193 | If there is no additional space for HOB creation, then ASSERT().\r | |
878ddf1f | 194 | \r |
5f10fa01 | 195 | @param ModuleName The GUID File Name of the module.\r |
196 | @param MemoryAllocationModule The 64 bit physical address of the module.\r | |
197 | @param ModuleLength The length of the module in bytes.\r | |
511710d6 | 198 | @param EntryPoint The 64 bit physical address of the module's entry point.\r |
878ddf1f | 199 | \r |
200 | **/\r | |
201 | VOID\r | |
202 | EFIAPI\r | |
203 | BuildModuleHob (\r | |
204 | IN CONST EFI_GUID *ModuleName,\r | |
205 | IN EFI_PHYSICAL_ADDRESS MemoryAllocationModule,\r | |
206 | IN UINT64 ModuleLength,\r | |
207 | IN EFI_PHYSICAL_ADDRESS EntryPoint\r | |
208 | )\r | |
209 | {\r | |
210 | //\r | |
211 | // PEI HOB is read only for DXE phase\r | |
212 | //\r | |
213 | ASSERT (FALSE);\r | |
214 | }\r | |
215 | \r | |
216 | /**\r | |
217 | Builds a HOB that describes a chunk of system memory.\r | |
218 | \r | |
5f10fa01 | 219 | This function builds a HOB that describes a chunk of system memory.\r |
220 | It can only be invoked during PEI phase;\r | |
221 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
222 | If there is no additional space for HOB creation, then ASSERT().\r | |
223 | \r | |
224 | @param ResourceType The type of resource described by this HOB.\r | |
225 | @param ResourceAttribute The resource attributes of the memory described by this HOB.\r | |
226 | @param PhysicalStart The 64 bit physical address of memory described by this HOB.\r | |
227 | @param NumberOfBytes The length of the memory described by this HOB in bytes.\r | |
878ddf1f | 228 | \r |
229 | **/\r | |
230 | VOID\r | |
231 | EFIAPI\r | |
232 | BuildResourceDescriptorHob (\r | |
233 | IN EFI_RESOURCE_TYPE ResourceType,\r | |
234 | IN EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute,\r | |
235 | IN EFI_PHYSICAL_ADDRESS PhysicalStart,\r | |
236 | IN UINT64 NumberOfBytes\r | |
237 | )\r | |
238 | {\r | |
239 | //\r | |
240 | // PEI HOB is read only for DXE phase\r | |
241 | //\r | |
242 | ASSERT (FALSE);\r | |
243 | }\r | |
244 | \r | |
245 | /**\r | |
5f10fa01 | 246 | Builds a GUID HOB with a certain data length.\r |
247 | \r | |
878ddf1f | 248 | This function builds a customized HOB tagged with a GUID for identification \r |
249 | and returns the start address of GUID HOB data so that caller can fill the customized data. \r | |
5f10fa01 | 250 | The HOB Header and Name field is already stripped.\r |
251 | It can only be invoked during PEI phase;\r | |
252 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
253 | If Guid is NULL, then ASSERT().\r | |
254 | If there is no additional space for HOB creation, then ASSERT().\r | |
533f039e | 255 | If DataLength >= (0x10000 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().\r |
878ddf1f | 256 | \r |
5f10fa01 | 257 | @param Guid The GUID to tag the customized HOB.\r |
258 | @param DataLength The size of the data payload for the GUID HOB.\r | |
878ddf1f | 259 | \r |
260 | @return The start address of GUID HOB data.\r | |
261 | \r | |
262 | **/\r | |
263 | VOID *\r | |
264 | EFIAPI\r | |
265 | BuildGuidHob (\r | |
266 | IN CONST EFI_GUID *Guid,\r | |
267 | IN UINTN DataLength\r | |
268 | )\r | |
269 | {\r | |
270 | //\r | |
271 | // PEI HOB is read only for DXE phase\r | |
272 | //\r | |
273 | ASSERT (FALSE);\r | |
274 | return NULL;\r | |
275 | }\r | |
276 | \r | |
277 | /**\r | |
5f10fa01 | 278 | Copies a data buffer to a newly-built HOB.\r |
279 | \r | |
280 | This function builds a customized HOB tagged with a GUID for identification,\r | |
281 | copies the input data to the HOB data field and returns the start address of the GUID HOB data.\r | |
282 | The HOB Header and Name field is already stripped.\r | |
283 | It can only be invoked during PEI phase;\r | |
284 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
285 | If Guid is NULL, then ASSERT().\r | |
286 | If Data is NULL and DataLength > 0, then ASSERT().\r | |
287 | If there is no additional space for HOB creation, then ASSERT().\r | |
533f039e | 288 | If DataLength >= (0x10000 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().\r |
5f10fa01 | 289 | \r |
290 | @param Guid The GUID to tag the customized HOB.\r | |
291 | @param Data The data to be copied into the data field of the GUID HOB.\r | |
292 | @param DataLength The size of the data payload for the GUID HOB.\r | |
878ddf1f | 293 | \r |
294 | @return The start address of GUID HOB data.\r | |
295 | \r | |
296 | **/\r | |
297 | VOID *\r | |
298 | EFIAPI\r | |
299 | BuildGuidDataHob (\r | |
300 | IN CONST EFI_GUID *Guid,\r | |
301 | IN VOID *Data,\r | |
302 | IN UINTN DataLength\r | |
303 | )\r | |
304 | {\r | |
305 | //\r | |
306 | // PEI HOB is read only for DXE phase\r | |
307 | //\r | |
308 | ASSERT (FALSE);\r | |
309 | return NULL;\r | |
310 | }\r | |
311 | \r | |
312 | /**\r | |
313 | Builds a Firmware Volume HOB.\r | |
314 | \r | |
5f10fa01 | 315 | This function builds a Firmware Volume HOB.\r |
316 | It can only be invoked during PEI phase;\r | |
317 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
318 | If there is no additional space for HOB creation, then ASSERT().\r | |
319 | \r | |
320 | @param BaseAddress The base address of the Firmware Volume.\r | |
321 | @param Length The size of the Firmware Volume in bytes.\r | |
878ddf1f | 322 | \r |
323 | **/\r | |
324 | VOID\r | |
325 | EFIAPI\r | |
326 | BuildFvHob (\r | |
327 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
328 | IN UINT64 Length\r | |
329 | )\r | |
330 | {\r | |
331 | //\r | |
332 | // PEI HOB is read only for DXE phase\r | |
333 | //\r | |
334 | ASSERT (FALSE);\r | |
335 | }\r | |
336 | \r | |
337 | /**\r | |
338 | Builds a Capsule Volume HOB.\r | |
339 | \r | |
5f10fa01 | 340 | This function builds a Capsule Volume HOB.\r |
341 | It can only be invoked during PEI phase;\r | |
342 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
343 | If there is no additional space for HOB creation, then ASSERT().\r | |
344 | \r | |
345 | @param BaseAddress The base address of the Capsule Volume.\r | |
346 | @param Length The size of the Capsule Volume in bytes.\r | |
878ddf1f | 347 | \r |
348 | **/\r | |
349 | VOID\r | |
350 | EFIAPI\r | |
351 | BuildCvHob (\r | |
352 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
353 | IN UINT64 Length\r | |
354 | )\r | |
355 | {\r | |
356 | //\r | |
357 | // PEI HOB is read only for DXE phase\r | |
358 | //\r | |
359 | ASSERT (FALSE);\r | |
360 | }\r | |
361 | \r | |
362 | /**\r | |
363 | Builds a HOB for the CPU.\r | |
364 | \r | |
5f10fa01 | 365 | This function builds a HOB for the CPU.\r |
366 | It can only be invoked during PEI phase;\r | |
367 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
368 | If there is no additional space for HOB creation, then ASSERT().\r | |
369 | \r | |
370 | @param SizeOfMemorySpace The maximum physical memory addressability of the processor.\r | |
371 | @param SizeOfIoSpace The maximum physical I/O addressability of the processor.\r | |
878ddf1f | 372 | \r |
373 | **/\r | |
374 | VOID\r | |
375 | EFIAPI\r | |
376 | BuildCpuHob (\r | |
377 | IN UINT8 SizeOfMemorySpace,\r | |
378 | IN UINT8 SizeOfIoSpace\r | |
379 | )\r | |
380 | {\r | |
381 | //\r | |
382 | // PEI HOB is read only for DXE phase\r | |
383 | //\r | |
384 | ASSERT (FALSE);\r | |
385 | }\r | |
386 | \r | |
387 | /**\r | |
388 | Builds a HOB for the Stack.\r | |
389 | \r | |
5f10fa01 | 390 | This function builds a HOB for the stack.\r |
391 | It can only be invoked during PEI phase;\r | |
392 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
393 | If there is no additional space for HOB creation, then ASSERT().\r | |
394 | \r | |
395 | @param BaseAddress The 64 bit physical address of the Stack.\r | |
396 | @param Length The length of the stack in bytes.\r | |
878ddf1f | 397 | \r |
398 | **/\r | |
399 | VOID\r | |
400 | EFIAPI\r | |
401 | BuildStackHob (\r | |
402 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
403 | IN UINT64 Length\r | |
404 | )\r | |
405 | {\r | |
406 | //\r | |
407 | // PEI HOB is read only for DXE phase\r | |
408 | //\r | |
409 | ASSERT (FALSE);\r | |
410 | }\r | |
411 | \r | |
412 | /**\r | |
413 | Builds a HOB for the BSP store.\r | |
414 | \r | |
5f10fa01 | 415 | This function builds a HOB for BSP store.\r |
416 | It can only be invoked during PEI phase;\r | |
417 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
418 | If there is no additional space for HOB creation, then ASSERT().\r | |
419 | \r | |
420 | @param BaseAddress The 64 bit physical address of the BSP.\r | |
421 | @param Length The length of the BSP store in bytes.\r | |
422 | @param MemoryType Type of memory allocated by this HOB.\r | |
878ddf1f | 423 | \r |
424 | **/\r | |
425 | VOID\r | |
426 | EFIAPI\r | |
427 | BuildBspStoreHob (\r | |
428 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
429 | IN UINT64 Length,\r | |
430 | IN EFI_MEMORY_TYPE MemoryType\r | |
431 | )\r | |
432 | {\r | |
433 | //\r | |
434 | // PEI HOB is read only for DXE phase\r | |
435 | //\r | |
436 | ASSERT (FALSE);\r | |
437 | }\r | |
438 | \r | |
439 | /**\r | |
440 | Builds a HOB for the memory allocation.\r | |
441 | \r | |
5f10fa01 | 442 | This function builds a HOB for the memory allocation.\r |
443 | It can only be invoked during PEI phase;\r | |
444 | for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r | |
445 | If there is no additional space for HOB creation, then ASSERT().\r | |
446 | \r | |
447 | @param BaseAddress The 64 bit physical address of the memory.\r | |
448 | @param Length The length of the memory allocation in bytes.\r | |
449 | @param MemoryType Type of memory allocated by this HOB.\r | |
878ddf1f | 450 | \r |
451 | **/\r | |
452 | VOID\r | |
453 | EFIAPI\r | |
454 | BuildMemoryAllocationHob (\r | |
455 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
456 | IN UINT64 Length,\r | |
457 | IN EFI_MEMORY_TYPE MemoryType\r | |
458 | )\r | |
459 | {\r | |
460 | //\r | |
461 | // PEI HOB is read only for DXE phase\r | |
462 | //\r | |
463 | ASSERT (FALSE);\r | |
464 | }\r |