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e386b444 | 1 | /** @file\r |
2 | Support routines for memory allocation routines for use with drivers.\r | |
3 | \r | |
4 | Copyright (c) 2006, Intel Corporation<BR>\r | |
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 | |
e386b444 | 13 | **/\r |
14 | \r | |
c892d846 | 15 | \r |
c7d265a9 | 16 | #include <PiPei.h>\r |
c892d846 | 17 | \r |
18 | \r | |
c7d265a9 | 19 | #include <Library/MemoryAllocationLib.h>\r |
20 | #include <Library/PeiServicesTablePointerLib.h>\r | |
21 | #include <Library/BaseMemoryLib.h>\r | |
22 | #include <Library/DebugLib.h>\r | |
e386b444 | 23 | \r |
24 | #include "MemoryAllocationLibInternals.h"\r | |
25 | \r | |
26 | /**\r | |
27 | Allocates one or more 4KB pages of a certain memory type.\r | |
28 | \r | |
29 | Allocates the number of 4KB pages of a certain memory type and returns a pointer to the allocated\r | |
30 | buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL is returned.\r | |
31 | If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
32 | \r | |
33 | @param MemoryType The type of memory to allocate.\r | |
34 | @param Pages The number of 4 KB pages to allocate.\r | |
35 | \r | |
36 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
37 | \r | |
38 | **/\r | |
39 | VOID *\r | |
40 | InternalAllocatePages (\r | |
41 | IN EFI_MEMORY_TYPE MemoryType, \r | |
42 | IN UINTN Pages\r | |
43 | )\r | |
44 | {\r | |
45 | EFI_STATUS Status;\r | |
46 | EFI_PHYSICAL_ADDRESS Memory; \r | |
47 | EFI_PEI_SERVICES **PeiServices;\r | |
48 | \r | |
49 | if (Pages == 0) {\r | |
50 | return NULL;\r | |
51 | }\r | |
52 | \r | |
53 | PeiServices = GetPeiServicesTablePointer ();\r | |
54 | Status = (*PeiServices)->AllocatePages (PeiServices, MemoryType, Pages, &Memory);\r | |
55 | if (EFI_ERROR (Status)) {\r | |
56 | Memory = 0;\r | |
57 | }\r | |
58 | return (VOID *) (UINTN) Memory;\r | |
59 | }\r | |
60 | \r | |
61 | /**\r | |
62 | Allocates one or more 4KB pages of type EfiBootServicesData.\r | |
63 | \r | |
64 | Allocates the number of 4KB pages of type EfiBootServicesData and returns a pointer to the\r | |
65 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r | |
66 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r | |
67 | returned.\r | |
68 | \r | |
69 | @param Pages The number of 4 KB pages to allocate.\r | |
70 | \r | |
71 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
72 | \r | |
73 | **/\r | |
74 | VOID *\r | |
75 | EFIAPI\r | |
76 | AllocatePages (\r | |
77 | IN UINTN Pages\r | |
78 | )\r | |
79 | {\r | |
80 | return InternalAllocatePages (EfiBootServicesData, Pages);\r | |
81 | }\r | |
82 | \r | |
83 | /**\r | |
84 | Allocates one or more 4KB pages of type EfiRuntimeServicesData.\r | |
85 | \r | |
86 | Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the\r | |
87 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r | |
88 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r | |
89 | returned.\r | |
90 | \r | |
91 | @param Pages The number of 4 KB pages to allocate.\r | |
92 | \r | |
93 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
94 | \r | |
95 | **/\r | |
96 | VOID *\r | |
97 | EFIAPI\r | |
98 | AllocateRuntimePages (\r | |
99 | IN UINTN Pages\r | |
100 | )\r | |
101 | {\r | |
102 | return InternalAllocatePages (EfiRuntimeServicesData, Pages);\r | |
103 | }\r | |
104 | \r | |
105 | /**\r | |
106 | Allocates one or more 4KB pages of type EfiReservedMemoryType.\r | |
107 | \r | |
108 | Allocates the number of 4KB pages of type EfiReservedMemoryType and returns a pointer to the\r | |
109 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r | |
110 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r | |
111 | returned.\r | |
112 | \r | |
113 | @param Pages The number of 4 KB pages to allocate.\r | |
114 | \r | |
115 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
116 | \r | |
117 | **/\r | |
118 | VOID *\r | |
119 | EFIAPI\r | |
120 | AllocateReservedPages (\r | |
121 | IN UINTN Pages\r | |
122 | )\r | |
123 | {\r | |
124 | return InternalAllocatePages (EfiReservedMemoryType, Pages);\r | |
125 | }\r | |
126 | \r | |
127 | /**\r | |
128 | Frees one or more 4KB pages that were previously allocated with one of the page allocation\r | |
129 | functions in the Memory Allocation Library.\r | |
130 | \r | |
131 | Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r | |
132 | must have been allocated on a previous call to the page allocation services of the Memory\r | |
133 | Allocation Library.\r | |
134 | If Buffer was not allocated with a page allocation function in the Memory Allocation Library,\r | |
135 | then ASSERT().\r | |
136 | If Pages is zero, then ASSERT().\r | |
137 | \r | |
138 | @param Buffer Pointer to the buffer of pages to free.\r | |
139 | @param Pages The number of 4 KB pages to free.\r | |
140 | \r | |
141 | **/\r | |
142 | VOID\r | |
143 | EFIAPI\r | |
144 | FreePages (\r | |
145 | IN VOID *Buffer,\r | |
146 | IN UINTN Pages\r | |
147 | )\r | |
148 | {\r | |
149 | //\r | |
150 | // PEI phase does not support to free pages, so leave it as NOP.\r | |
151 | //\r | |
152 | }\r | |
153 | \r | |
154 | /**\r | |
155 | Allocates one or more 4KB pages of a certain memory type at a specified alignment.\r | |
156 | \r | |
157 | Allocates the number of 4KB pages specified by Pages of a certain memory type with an alignment\r | |
158 | specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is returned.\r | |
159 | If there is not enough memory at the specified alignment remaining to satisfy the request, then\r | |
160 | NULL is returned.\r | |
161 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
162 | \r | |
163 | @param MemoryType The type of memory to allocate.\r | |
164 | @param Pages The number of 4 KB pages to allocate.\r | |
165 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
166 | If Alignment is zero, then byte alignment is used.\r | |
167 | \r | |
168 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
169 | \r | |
170 | **/\r | |
171 | VOID *\r | |
172 | InternalAllocateAlignedPages (\r | |
173 | IN EFI_MEMORY_TYPE MemoryType, \r | |
174 | IN UINTN Pages,\r | |
175 | IN UINTN Alignment\r | |
176 | )\r | |
177 | {\r | |
178 | VOID *Memory;\r | |
179 | UINTN AlignmentMask;\r | |
180 | \r | |
181 | //\r | |
182 | // Alignment must be a power of two or zero.\r | |
183 | //\r | |
184 | ASSERT ((Alignment & (Alignment - 1)) == 0);\r | |
185 | \r | |
186 | if (Pages == 0) {\r | |
187 | return NULL;\r | |
188 | }\r | |
189 | //\r | |
190 | // Make sure that Pages plus EFI_SIZE_TO_PAGES (Alignment) does not overflow.\r | |
191 | //\r | |
192 | ASSERT (Pages <= (MAX_ADDRESS - EFI_SIZE_TO_PAGES (Alignment)));\r | |
193 | //\r | |
194 | // We would rather waste some memory to save PEI code size.\r | |
195 | //\r | |
196 | Memory = InternalAllocatePages (MemoryType, Pages + EFI_SIZE_TO_PAGES (Alignment));\r | |
197 | if (Alignment == 0) {\r | |
198 | AlignmentMask = Alignment;\r | |
199 | } else {\r | |
200 | AlignmentMask = Alignment - 1; \r | |
201 | }\r | |
202 | return (VOID *) (UINTN) (((UINTN) Memory + AlignmentMask) & ~AlignmentMask);\r | |
203 | }\r | |
204 | \r | |
205 | /**\r | |
206 | Allocates one or more 4KB pages of type EfiBootServicesData at a specified alignment.\r | |
207 | \r | |
208 | Allocates the number of 4KB pages specified by Pages of type EfiBootServicesData with an\r | |
209 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
210 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
211 | request, then NULL is returned.\r | |
212 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
213 | \r | |
214 | @param Pages The number of 4 KB pages to allocate.\r | |
215 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
216 | If Alignment is zero, then byte alignment is used.\r | |
217 | \r | |
218 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
219 | \r | |
220 | **/\r | |
221 | VOID *\r | |
222 | EFIAPI\r | |
223 | AllocateAlignedPages (\r | |
224 | IN UINTN Pages,\r | |
225 | IN UINTN Alignment\r | |
226 | )\r | |
227 | {\r | |
228 | return InternalAllocateAlignedPages (EfiBootServicesData, Pages, Alignment);\r | |
229 | }\r | |
230 | \r | |
231 | /**\r | |
232 | Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.\r | |
233 | \r | |
234 | Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData with an\r | |
235 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
236 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
237 | request, then NULL is returned.\r | |
238 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
239 | \r | |
240 | @param Pages The number of 4 KB pages to allocate.\r | |
241 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
242 | If Alignment is zero, then byte alignment is used.\r | |
243 | \r | |
244 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
245 | \r | |
246 | **/\r | |
247 | VOID *\r | |
248 | EFIAPI\r | |
249 | AllocateAlignedRuntimePages (\r | |
250 | IN UINTN Pages,\r | |
251 | IN UINTN Alignment\r | |
252 | )\r | |
253 | {\r | |
254 | return InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);\r | |
255 | }\r | |
256 | \r | |
257 | /**\r | |
258 | Allocates one or more 4KB pages of type EfiReservedMemoryType at a specified alignment.\r | |
259 | \r | |
260 | Allocates the number of 4KB pages specified by Pages of type EfiReservedMemoryType with an\r | |
261 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
262 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
263 | request, then NULL is returned.\r | |
264 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
265 | \r | |
266 | @param Pages The number of 4 KB pages to allocate.\r | |
267 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
268 | If Alignment is zero, then byte alignment is used.\r | |
269 | \r | |
270 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
271 | \r | |
272 | **/\r | |
273 | VOID *\r | |
274 | EFIAPI\r | |
275 | AllocateAlignedReservedPages (\r | |
276 | IN UINTN Pages,\r | |
277 | IN UINTN Alignment\r | |
278 | )\r | |
279 | {\r | |
280 | return InternalAllocateAlignedPages (EfiReservedMemoryType, Pages, Alignment);\r | |
281 | }\r | |
282 | \r | |
283 | /**\r | |
284 | Frees one or more 4KB pages that were previously allocated with one of the aligned page\r | |
285 | allocation functions in the Memory Allocation Library.\r | |
286 | \r | |
287 | Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r | |
288 | must have been allocated on a previous call to the aligned page allocation services of the Memory\r | |
289 | Allocation Library.\r | |
290 | If Buffer was not allocated with an aligned page allocation function in the Memory Allocation\r | |
291 | Library, then ASSERT().\r | |
292 | If Pages is zero, then ASSERT().\r | |
293 | \r | |
294 | @param Buffer Pointer to the buffer of pages to free.\r | |
295 | @param Pages The number of 4 KB pages to free.\r | |
296 | \r | |
297 | **/\r | |
298 | VOID\r | |
299 | EFIAPI\r | |
300 | FreeAlignedPages (\r | |
301 | IN VOID *Buffer,\r | |
302 | IN UINTN Pages\r | |
303 | )\r | |
304 | {\r | |
305 | //\r | |
306 | // PEI phase does not support to free pages, so leave it as NOP.\r | |
307 | //\r | |
308 | }\r | |
309 | \r | |
310 | /**\r | |
311 | Allocates a buffer of a certain pool type.\r | |
312 | \r | |
313 | Allocates the number bytes specified by AllocationSize of a certain pool type and returns a\r | |
314 | pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
315 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
316 | \r | |
317 | @param MemoryType The type of memory to allocate.\r | |
318 | @param AllocationSize The number of bytes to allocate.\r | |
319 | \r | |
320 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
321 | \r | |
322 | **/\r | |
323 | VOID *\r | |
324 | InternalAllocatePool (\r | |
325 | IN EFI_MEMORY_TYPE MemoryType, \r | |
326 | IN UINTN AllocationSize\r | |
327 | )\r | |
328 | {\r | |
329 | //\r | |
330 | // If we need lots of small runtime/reserved memory type from PEI in the future, \r | |
331 | // we can consider providing a more complex algorithm that allocates runtime pages and \r | |
332 | // provide pool allocations from those pages. \r | |
333 | //\r | |
334 | return InternalAllocatePages (MemoryType, EFI_SIZE_TO_PAGES (AllocationSize));\r | |
335 | }\r | |
336 | \r | |
337 | /**\r | |
338 | Allocates a buffer of type EfiBootServicesData.\r | |
339 | \r | |
340 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData and returns a\r | |
341 | pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
342 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
343 | \r | |
344 | @param AllocationSize The number of bytes to allocate.\r | |
345 | \r | |
346 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
347 | \r | |
348 | **/\r | |
349 | VOID *\r | |
350 | EFIAPI\r | |
351 | AllocatePool (\r | |
352 | IN UINTN AllocationSize\r | |
353 | )\r | |
354 | {\r | |
355 | EFI_STATUS Status;\r | |
356 | EFI_PEI_SERVICES **PeiServices;\r | |
357 | VOID *Buffer;\r | |
358 | \r | |
359 | PeiServices = GetPeiServicesTablePointer ();\r | |
360 | \r | |
361 | Status = (*PeiServices)->AllocatePool (PeiServices, AllocationSize, &Buffer);\r | |
362 | if (EFI_ERROR (Status)) {\r | |
363 | Buffer = NULL;\r | |
364 | }\r | |
365 | return Buffer;\r | |
366 | }\r | |
367 | \r | |
368 | /**\r | |
369 | Allocates a buffer of type EfiRuntimeServicesData.\r | |
370 | \r | |
371 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData and returns\r | |
372 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
373 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
374 | \r | |
375 | @param AllocationSize The number of bytes to allocate.\r | |
376 | \r | |
377 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
378 | \r | |
379 | **/\r | |
380 | VOID *\r | |
381 | EFIAPI\r | |
382 | AllocateRuntimePool (\r | |
383 | IN UINTN AllocationSize\r | |
384 | )\r | |
385 | {\r | |
386 | return InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);\r | |
387 | }\r | |
388 | \r | |
389 | /**\r | |
390 | Allocates a buffer of type EfieservedMemoryType.\r | |
391 | \r | |
392 | Allocates the number bytes specified by AllocationSize of type EfieservedMemoryType and returns\r | |
393 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
394 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
395 | \r | |
396 | @param AllocationSize The number of bytes to allocate.\r | |
397 | \r | |
398 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
399 | \r | |
400 | **/\r | |
401 | VOID *\r | |
402 | EFIAPI\r | |
403 | AllocateReservedPool (\r | |
404 | IN UINTN AllocationSize\r | |
405 | )\r | |
406 | {\r | |
407 | return InternalAllocatePool (EfiReservedMemoryType, AllocationSize);\r | |
408 | }\r | |
409 | \r | |
410 | /**\r | |
411 | Allocates and zeros a buffer of a certian pool type.\r | |
412 | \r | |
413 | Allocates the number bytes specified by AllocationSize of a certian pool type, clears the buffer\r | |
414 | with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid\r | |
415 | buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request,\r | |
416 | then NULL is returned.\r | |
417 | \r | |
418 | @param PoolType The type of memory to allocate.\r | |
419 | @param AllocationSize The number of bytes to allocate and zero.\r | |
420 | \r | |
421 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
422 | \r | |
423 | **/\r | |
424 | VOID *\r | |
425 | InternalAllocateZeroPool (\r | |
426 | IN EFI_MEMORY_TYPE PoolType, \r | |
427 | IN UINTN AllocationSize\r | |
428 | ) \r | |
429 | {\r | |
430 | VOID *Memory;\r | |
431 | \r | |
432 | Memory = InternalAllocatePool (PoolType, AllocationSize);\r | |
433 | if (Memory != NULL) {\r | |
434 | Memory = ZeroMem (Memory, AllocationSize);\r | |
435 | }\r | |
436 | return Memory;\r | |
437 | }\r | |
438 | \r | |
439 | /**\r | |
440 | Allocates and zeros a buffer of type EfiBootServicesData.\r | |
441 | \r | |
442 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, clears the\r | |
443 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
444 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
445 | request, then NULL is returned.\r | |
446 | \r | |
447 | @param AllocationSize The number of bytes to allocate and zero.\r | |
448 | \r | |
449 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
450 | \r | |
451 | **/\r | |
452 | VOID *\r | |
453 | EFIAPI\r | |
454 | AllocateZeroPool (\r | |
455 | IN UINTN AllocationSize\r | |
456 | )\r | |
457 | {\r | |
458 | VOID *Memory;\r | |
459 | \r | |
460 | Memory = AllocatePool (AllocationSize);\r | |
461 | if (Memory != NULL) {\r | |
462 | Memory = ZeroMem (Memory, AllocationSize);\r | |
463 | }\r | |
464 | return Memory;\r | |
465 | }\r | |
466 | \r | |
467 | /**\r | |
468 | Allocates and zeros a buffer of type EfiRuntimeServicesData.\r | |
469 | \r | |
470 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, clears the\r | |
471 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
472 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
473 | request, then NULL is returned.\r | |
474 | \r | |
475 | @param AllocationSize The number of bytes to allocate and zero.\r | |
476 | \r | |
477 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
478 | \r | |
479 | **/\r | |
480 | VOID *\r | |
481 | EFIAPI\r | |
482 | AllocateRuntimeZeroPool (\r | |
483 | IN UINTN AllocationSize\r | |
484 | )\r | |
485 | {\r | |
486 | return InternalAllocateZeroPool (EfiRuntimeServicesData, AllocationSize);\r | |
487 | }\r | |
488 | \r | |
489 | /**\r | |
490 | Allocates and zeros a buffer of type EfiReservedMemoryType.\r | |
491 | \r | |
492 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, clears the\r | |
493 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
494 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
495 | request, then NULL is returned.\r | |
496 | \r | |
497 | @param AllocationSize The number of bytes to allocate and zero.\r | |
498 | \r | |
499 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
500 | \r | |
501 | **/\r | |
502 | VOID *\r | |
503 | EFIAPI\r | |
504 | AllocateReservedZeroPool (\r | |
505 | IN UINTN AllocationSize\r | |
506 | )\r | |
507 | {\r | |
508 | return InternalAllocateZeroPool (EfiReservedMemoryType, AllocationSize);\r | |
509 | }\r | |
510 | \r | |
511 | /**\r | |
512 | Copies a buffer to an allocated buffer of a certian pool type.\r | |
513 | \r | |
514 | Allocates the number bytes specified by AllocationSize of a certian pool type, copies\r | |
515 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
516 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
517 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
518 | If Buffer is NULL, then ASSERT().\r | |
519 | If AllocationSize is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT(). \r | |
520 | \r | |
521 | @param PoolType The type of pool to allocate.\r | |
522 | @param AllocationSize The number of bytes to allocate and zero.\r | |
523 | @param Buffer The buffer to copy to the allocated buffer.\r | |
524 | \r | |
525 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
526 | \r | |
527 | **/\r | |
528 | VOID *\r | |
529 | InternalAllocateCopyPool (\r | |
530 | IN EFI_MEMORY_TYPE PoolType, \r | |
531 | IN UINTN AllocationSize,\r | |
532 | IN CONST VOID *Buffer\r | |
533 | ) \r | |
534 | {\r | |
535 | VOID *Memory;\r | |
536 | \r | |
537 | ASSERT (Buffer != NULL);\r | |
538 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r | |
539 | \r | |
540 | Memory = InternalAllocatePool (PoolType, AllocationSize);\r | |
541 | if (Memory != NULL) {\r | |
542 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r | |
543 | }\r | |
544 | return Memory;\r | |
545 | } \r | |
546 | \r | |
547 | /**\r | |
548 | Copies a buffer to an allocated buffer of type EfiBootServicesData.\r | |
549 | \r | |
550 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, copies\r | |
551 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
552 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
553 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
554 | If Buffer is NULL, then ASSERT().\r | |
555 | If AllocationSize is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT(). \r | |
556 | \r | |
557 | @param AllocationSize The number of bytes to allocate and zero.\r | |
558 | @param Buffer The buffer to copy to the allocated buffer.\r | |
559 | \r | |
560 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
561 | \r | |
562 | **/\r | |
563 | VOID *\r | |
564 | EFIAPI\r | |
565 | AllocateCopyPool (\r | |
566 | IN UINTN AllocationSize,\r | |
567 | IN CONST VOID *Buffer\r | |
568 | )\r | |
569 | {\r | |
570 | VOID *Memory;\r | |
571 | \r | |
572 | ASSERT (Buffer != NULL);\r | |
573 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r | |
574 | \r | |
575 | Memory = AllocatePool (AllocationSize);\r | |
576 | if (Memory != NULL) {\r | |
577 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r | |
578 | }\r | |
579 | return Memory;\r | |
580 | }\r | |
581 | \r | |
582 | /**\r | |
583 | Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.\r | |
584 | \r | |
585 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, copies\r | |
586 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
587 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
588 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
589 | If Buffer is NULL, then ASSERT().\r | |
590 | If AllocationSize is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT(). \r | |
591 | \r | |
592 | @param AllocationSize The number of bytes to allocate and zero.\r | |
593 | @param Buffer The buffer to copy to the allocated buffer.\r | |
594 | \r | |
595 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
596 | \r | |
597 | **/\r | |
598 | VOID *\r | |
599 | EFIAPI\r | |
600 | AllocateRuntimeCopyPool (\r | |
601 | IN UINTN AllocationSize,\r | |
602 | IN CONST VOID *Buffer\r | |
603 | )\r | |
604 | {\r | |
605 | return InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer);\r | |
606 | }\r | |
607 | \r | |
608 | /**\r | |
609 | Copies a buffer to an allocated buffer of type EfiReservedMemoryType.\r | |
610 | \r | |
611 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, copies\r | |
612 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
613 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
614 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
615 | If Buffer is NULL, then ASSERT().\r | |
616 | If AllocationSize is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT(). \r | |
617 | \r | |
618 | @param AllocationSize The number of bytes to allocate and zero.\r | |
619 | @param Buffer The buffer to copy to the allocated buffer.\r | |
620 | \r | |
621 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
622 | \r | |
623 | **/\r | |
624 | VOID *\r | |
625 | EFIAPI\r | |
626 | AllocateReservedCopyPool (\r | |
627 | IN UINTN AllocationSize,\r | |
628 | IN CONST VOID *Buffer\r | |
629 | )\r | |
630 | {\r | |
631 | return InternalAllocateCopyPool (EfiReservedMemoryType, AllocationSize, Buffer);\r | |
632 | }\r | |
633 | \r | |
634 | /**\r | |
635 | Frees a buffer that was previously allocated with one of the pool allocation functions in the\r | |
636 | Memory Allocation Library.\r | |
637 | \r | |
638 | Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the\r | |
639 | pool allocation services of the Memory Allocation Library.\r | |
640 | If Buffer was not allocated with a pool allocation function in the Memory Allocation Library,\r | |
641 | then ASSERT().\r | |
642 | \r | |
643 | @param Buffer Pointer to the buffer to free.\r | |
644 | \r | |
645 | **/\r | |
646 | VOID\r | |
647 | EFIAPI\r | |
648 | FreePool (\r | |
649 | IN VOID *Buffer\r | |
650 | )\r | |
651 | {\r | |
652 | //\r | |
653 | // PEI phase does not support to free pool, so leave it as NOP.\r | |
654 | //\r | |
655 | }\r | |
656 | \r | |
657 | /**\r | |
658 | Allocates a buffer of a certain pool type at a specified alignment.\r | |
659 | \r | |
660 | Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment\r | |
661 | specified by Alignment. The allocated buffer is returned. If AllocationSize is 0, then a valid\r | |
662 | buffer of 0 size is returned. If there is not enough memory at the specified alignment remaining\r | |
663 | to satisfy the request, then NULL is returned.\r | |
664 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
665 | \r | |
666 | @param PoolType The type of pool to allocate.\r | |
667 | @param AllocationSize The number of bytes to allocate.\r | |
668 | @param Alignment The requested alignment of the allocation. Must be a power of two. If Alignment is zero, then byte alignment is used.\r | |
669 | If Alignment is zero, then byte alignment is used.\r | |
670 | \r | |
671 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
672 | \r | |
673 | **/\r | |
674 | VOID *\r | |
675 | InternalAllocateAlignedPool (\r | |
676 | IN EFI_MEMORY_TYPE PoolType,\r | |
677 | IN UINTN AllocationSize,\r | |
678 | IN UINTN Alignment\r | |
679 | )\r | |
680 | {\r | |
681 | VOID *RawAddress;\r | |
682 | UINTN AlignedAddress;\r | |
683 | UINTN AlignmentMask;\r | |
684 | \r | |
685 | //\r | |
686 | // Alignment must be a power of two or zero.\r | |
687 | //\r | |
688 | ASSERT ((Alignment & (Alignment - 1)) == 0);\r | |
689 | \r | |
690 | if (Alignment == 0) {\r | |
691 | AlignmentMask = Alignment;\r | |
692 | } else {\r | |
693 | AlignmentMask = Alignment - 1;\r | |
694 | }\r | |
695 | //\r | |
696 | // Make sure that AllocationSize plus AlignmentMask does not overflow.\r | |
697 | //\r | |
698 | ASSERT (AllocationSize <= (MAX_ADDRESS - AlignmentMask));\r | |
699 | \r | |
700 | RawAddress = InternalAllocatePool (PoolType, AllocationSize + AlignmentMask);\r | |
701 | \r | |
702 | AlignedAddress = ((UINTN) RawAddress + AlignmentMask) & ~AlignmentMask;\r | |
703 | \r | |
704 | return (VOID *) AlignedAddress;\r | |
705 | }\r | |
706 | \r | |
707 | /**\r | |
708 | Allocates a buffer of type EfiBootServicesData at a specified alignment.\r | |
709 | \r | |
710 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData with an\r | |
711 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r | |
712 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r | |
713 | alignment remaining to satisfy the request, then NULL is returned.\r | |
714 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
715 | \r | |
716 | @param AllocationSize The number of bytes to allocate.\r | |
717 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
718 | If Alignment is zero, then byte alignment is used.\r | |
719 | \r | |
720 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
721 | \r | |
722 | **/\r | |
723 | VOID *\r | |
724 | EFIAPI\r | |
725 | AllocateAlignedPool (\r | |
726 | IN UINTN AllocationSize,\r | |
727 | IN UINTN Alignment\r | |
728 | )\r | |
729 | {\r | |
730 | VOID *RawAddress;\r | |
731 | UINTN AlignedAddress;\r | |
732 | UINTN AlignmentMask;\r | |
733 | \r | |
734 | //\r | |
735 | // Alignment must be a power of two or zero.\r | |
736 | //\r | |
737 | ASSERT ((Alignment & (Alignment - 1)) == 0);\r | |
738 | \r | |
739 | if (Alignment == 0) {\r | |
740 | AlignmentMask = Alignment;\r | |
741 | } else {\r | |
742 | AlignmentMask = Alignment - 1;\r | |
743 | }\r | |
744 | \r | |
745 | //\r | |
746 | // Make sure that AllocationSize plus AlignmentMask does not overflow.\r | |
747 | //\r | |
748 | ASSERT (AllocationSize <= (MAX_ADDRESS - AlignmentMask));\r | |
749 | \r | |
750 | RawAddress = AllocatePool (AllocationSize + AlignmentMask);\r | |
751 | \r | |
752 | AlignedAddress = ((UINTN) RawAddress + AlignmentMask) & ~AlignmentMask;\r | |
753 | \r | |
754 | return (VOID *) AlignedAddress;\r | |
755 | }\r | |
756 | \r | |
757 | /**\r | |
758 | Allocates a buffer of type EfiRuntimeServicesData at a specified alignment.\r | |
759 | \r | |
760 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData with an\r | |
761 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r | |
762 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r | |
763 | alignment remaining to satisfy the request, then NULL is returned.\r | |
764 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
765 | \r | |
766 | @param AllocationSize The number of bytes to allocate.\r | |
767 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
768 | If Alignment is zero, then byte alignment is used.\r | |
769 | \r | |
770 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
771 | \r | |
772 | **/\r | |
773 | VOID *\r | |
774 | EFIAPI\r | |
775 | AllocateAlignedRuntimePool (\r | |
776 | IN UINTN AllocationSize,\r | |
777 | IN UINTN Alignment\r | |
778 | )\r | |
779 | {\r | |
780 | return InternalAllocateAlignedPool (EfiRuntimeServicesData, AllocationSize, Alignment);\r | |
781 | }\r | |
782 | \r | |
783 | /**\r | |
784 | Allocates a buffer of type EfieservedMemoryType at a specified alignment.\r | |
785 | \r | |
786 | Allocates the number bytes specified by AllocationSize of type EfieservedMemoryType with an\r | |
787 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r | |
788 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r | |
789 | alignment remaining to satisfy the request, then NULL is returned.\r | |
790 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
791 | \r | |
792 | @param AllocationSize The number of bytes to allocate.\r | |
793 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
794 | If Alignment is zero, then byte alignment is used.\r | |
795 | \r | |
796 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
797 | \r | |
798 | **/\r | |
799 | VOID *\r | |
800 | EFIAPI\r | |
801 | AllocateAlignedReservedPool (\r | |
802 | IN UINTN AllocationSize,\r | |
803 | IN UINTN Alignment\r | |
804 | )\r | |
805 | {\r | |
806 | return InternalAllocateAlignedPool (EfiReservedMemoryType, AllocationSize, Alignment);\r | |
807 | }\r | |
808 | \r | |
809 | /**\r | |
810 | Allocates and zeros a buffer of a certain pool type at a specified alignment.\r | |
811 | \r | |
812 | Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment\r | |
813 | specified by Alignment, clears the buffer with zeros, and returns a pointer to the allocated\r | |
814 | buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not\r | |
815 | enough memory at the specified alignment remaining to satisfy the request, then NULL is returned.\r | |
816 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
817 | \r | |
818 | @param PoolType The type of pool to allocate.\r | |
819 | @param AllocationSize The number of bytes to allocate.\r | |
820 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
821 | If Alignment is zero, then byte alignment is used.\r | |
822 | \r | |
823 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
824 | \r | |
825 | **/\r | |
826 | VOID *\r | |
827 | InternalAllocateAlignedZeroPool (\r | |
828 | IN EFI_MEMORY_TYPE PoolType,\r | |
829 | IN UINTN AllocationSize,\r | |
830 | IN UINTN Alignment\r | |
831 | )\r | |
832 | {\r | |
833 | VOID *Memory;\r | |
834 | \r | |
835 | Memory = InternalAllocateAlignedPool (PoolType, AllocationSize, Alignment);\r | |
836 | if (Memory != NULL) {\r | |
837 | Memory = ZeroMem (Memory, AllocationSize);\r | |
838 | }\r | |
839 | return Memory;\r | |
840 | }\r | |
841 | \r | |
842 | /**\r | |
843 | Allocates and zeros a buffer of type EfiBootServicesData at a specified alignment.\r | |
844 | \r | |
845 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData with an\r | |
846 | alignment specified by Alignment, clears the buffer with zeros, and returns a pointer to the\r | |
847 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
848 | is not enough memory at the specified alignment remaining to satisfy the request, then NULL is\r | |
849 | returned.\r | |
850 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
851 | \r | |
852 | @param AllocationSize The number of bytes to allocate.\r | |
853 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
854 | If Alignment is zero, then byte alignment is used.\r | |
855 | \r | |
856 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
857 | \r | |
858 | **/\r | |
859 | VOID *\r | |
860 | EFIAPI\r | |
861 | AllocateAlignedZeroPool (\r | |
862 | IN UINTN AllocationSize,\r | |
863 | IN UINTN Alignment\r | |
864 | )\r | |
865 | {\r | |
866 | VOID *Memory;\r | |
867 | \r | |
868 | Memory = AllocateAlignedPool (AllocationSize, Alignment);\r | |
869 | if (Memory != NULL) {\r | |
870 | Memory = ZeroMem (Memory, AllocationSize);\r | |
871 | }\r | |
872 | return Memory;\r | |
873 | }\r | |
874 | \r | |
875 | /**\r | |
876 | Allocates and zeros a buffer of type EfiRuntimeServicesData at a specified alignment.\r | |
877 | \r | |
878 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData with an\r | |
879 | alignment specified by Alignment, clears the buffer with zeros, and returns a pointer to the\r | |
880 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
881 | is not enough memory at the specified alignment remaining to satisfy the request, then NULL is\r | |
882 | returned.\r | |
883 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
884 | \r | |
885 | @param AllocationSize The number of bytes to allocate.\r | |
886 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
887 | If Alignment is zero, then byte alignment is used.\r | |
888 | \r | |
889 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
890 | \r | |
891 | **/\r | |
892 | VOID *\r | |
893 | EFIAPI\r | |
894 | AllocateAlignedRuntimeZeroPool (\r | |
895 | IN UINTN AllocationSize,\r | |
896 | IN UINTN Alignment\r | |
897 | )\r | |
898 | {\r | |
899 | return InternalAllocateAlignedZeroPool (EfiRuntimeServicesData, AllocationSize, Alignment);\r | |
900 | }\r | |
901 | \r | |
902 | /**\r | |
903 | Allocates and zeros a buffer of type EfieservedMemoryType at a specified alignment.\r | |
904 | \r | |
905 | Allocates the number bytes specified by AllocationSize of type EfieservedMemoryType with an\r | |
906 | alignment specified by Alignment, clears the buffer with zeros, and returns a pointer to the\r | |
907 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
908 | is not enough memory at the specified alignment remaining to satisfy the request, then NULL is\r | |
909 | returned.\r | |
910 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
911 | \r | |
912 | @param AllocationSize The number of bytes to allocate.\r | |
913 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
914 | If Alignment is zero, then byte alignment is used.\r | |
915 | \r | |
916 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
917 | \r | |
918 | **/\r | |
919 | VOID *\r | |
920 | EFIAPI\r | |
921 | AllocateAlignedReservedZeroPool (\r | |
922 | IN UINTN AllocationSize,\r | |
923 | IN UINTN Alignment\r | |
924 | )\r | |
925 | {\r | |
926 | return InternalAllocateAlignedZeroPool (EfiReservedMemoryType, AllocationSize, Alignment);\r | |
927 | }\r | |
928 | \r | |
929 | /**\r | |
930 | Copies a buffer to an allocated buffer of a certain pool type at a specified alignment.\r | |
931 | \r | |
932 | Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment\r | |
933 | specified by Alignment. The allocated buffer is returned. If AllocationSize is 0, then a valid\r | |
934 | buffer of 0 size is returned. If there is not enough memory at the specified alignment remaining\r | |
935 | to satisfy the request, then NULL is returned.\r | |
936 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
937 | \r | |
938 | @param PoolType The type of pool to allocate.\r | |
939 | @param AllocationSize The number of bytes to allocate.\r | |
940 | @param Buffer The buffer to copy to the allocated buffer.\r | |
941 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
942 | If Alignment is zero, then byte alignment is used.\r | |
943 | \r | |
944 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
945 | \r | |
946 | **/\r | |
947 | VOID *\r | |
948 | InternalAllocateAlignedCopyPool (\r | |
949 | IN EFI_MEMORY_TYPE PoolType,\r | |
950 | IN UINTN AllocationSize,\r | |
951 | IN CONST VOID *Buffer,\r | |
952 | IN UINTN Alignment\r | |
953 | )\r | |
954 | {\r | |
955 | VOID *Memory;\r | |
956 | \r | |
957 | ASSERT (Buffer != NULL);\r | |
958 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r | |
959 | \r | |
960 | Memory = InternalAllocateAlignedPool (PoolType, AllocationSize, Alignment);\r | |
961 | if (Memory != NULL) {\r | |
962 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r | |
963 | }\r | |
964 | return Memory;\r | |
965 | }\r | |
966 | \r | |
967 | /**\r | |
968 | Copies a buffer to an allocated buffer of type EfiBootServicesData at a specified alignment.\r | |
969 | \r | |
970 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData type with an\r | |
971 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r | |
972 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r | |
973 | alignment remaining to satisfy the request, then NULL is returned.\r | |
974 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
975 | \r | |
976 | @param AllocationSize The number of bytes to allocate.\r | |
977 | @param Buffer The buffer to copy to the allocated buffer.\r | |
978 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
979 | If Alignment is zero, then byte alignment is used.\r | |
980 | \r | |
981 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
982 | \r | |
983 | **/\r | |
984 | VOID *\r | |
985 | EFIAPI\r | |
986 | AllocateAlignedCopyPool (\r | |
987 | IN UINTN AllocationSize,\r | |
988 | IN CONST VOID *Buffer,\r | |
989 | IN UINTN Alignment\r | |
990 | )\r | |
991 | {\r | |
992 | VOID *Memory;\r | |
993 | \r | |
994 | ASSERT (Buffer != NULL);\r | |
995 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r | |
996 | \r | |
997 | Memory = AllocateAlignedPool (AllocationSize, Alignment);\r | |
998 | if (Memory != NULL) {\r | |
999 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r | |
1000 | }\r | |
1001 | return Memory;\r | |
1002 | }\r | |
1003 | \r | |
1004 | /**\r | |
1005 | Copies a buffer to an allocated buffer of type EfiRuntimeServicesData at a specified alignment.\r | |
1006 | \r | |
1007 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData type with an\r | |
1008 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r | |
1009 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r | |
1010 | alignment remaining to satisfy the request, then NULL is returned.\r | |
1011 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
1012 | \r | |
1013 | @param AllocationSize The number of bytes to allocate.\r | |
1014 | @param Buffer The buffer to copy to the allocated buffer.\r | |
1015 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
1016 | If Alignment is zero, then byte alignment is used.\r | |
1017 | \r | |
1018 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
1019 | \r | |
1020 | **/\r | |
1021 | VOID *\r | |
1022 | EFIAPI\r | |
1023 | AllocateAlignedRuntimeCopyPool (\r | |
1024 | IN UINTN AllocationSize,\r | |
1025 | IN CONST VOID *Buffer,\r | |
1026 | IN UINTN Alignment\r | |
1027 | )\r | |
1028 | {\r | |
1029 | return InternalAllocateAlignedCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer, Alignment);\r | |
1030 | }\r | |
1031 | \r | |
1032 | /**\r | |
1033 | Copies a buffer to an allocated buffer of type EfiReservedMemoryType at a specified alignment.\r | |
1034 | \r | |
1035 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType type with an\r | |
1036 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r | |
1037 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r | |
1038 | alignment remaining to satisfy the request, then NULL is returned.\r | |
1039 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
1040 | \r | |
1041 | @param AllocationSize The number of bytes to allocate.\r | |
1042 | @param Buffer The buffer to copy to the allocated buffer.\r | |
1043 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
1044 | If Alignment is zero, then byte alignment is used.\r | |
1045 | \r | |
1046 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
1047 | \r | |
1048 | **/\r | |
1049 | VOID *\r | |
1050 | EFIAPI\r | |
1051 | AllocateAlignedReservedCopyPool (\r | |
1052 | IN UINTN AllocationSize,\r | |
1053 | IN CONST VOID *Buffer,\r | |
1054 | IN UINTN Alignment\r | |
1055 | )\r | |
1056 | {\r | |
1057 | return InternalAllocateAlignedCopyPool (EfiReservedMemoryType, AllocationSize, Buffer, Alignment);\r | |
1058 | }\r | |
1059 | \r | |
1060 | /**\r | |
1061 | Frees a buffer that was previously allocated with one of the aligned pool allocation functions \r | |
1062 | in the Memory Allocation Library.\r | |
1063 | \r | |
1064 | Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the\r | |
1065 | aligned pool allocation services of the Memory Allocation Library.\r | |
1066 | If Buffer was not allocated with an aligned pool allocation function in the Memory Allocation\r | |
1067 | Library, then ASSERT().\r | |
1068 | \r | |
1069 | @param Buffer Pointer to the buffer to free.\r | |
1070 | \r | |
1071 | **/\r | |
1072 | VOID\r | |
1073 | EFIAPI\r | |
1074 | FreeAlignedPool (\r | |
1075 | IN VOID *Buffer\r | |
1076 | )\r | |
1077 | {\r | |
1078 | //\r | |
1079 | // PEI phase does not support to free pool, so leave it as NOP.\r | |
1080 | //\r | |
1081 | }\r |