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 |
13 | Module Name: MemoryAllocationLib.c\r |
14 | \r |
15 | **/\r |
16 | \r |
17 | //\r |
c7d265a9 |
18 | // The package level header files this module uses\r |
e386b444 |
19 | //\r |
c7d265a9 |
20 | #include <PiPei.h>\r |
21 | //\r |
22 | // The protocols, PPI and GUID defintions for this module\r |
23 | //\r |
24 | //\r |
25 | // The Library classes this module consumes\r |
26 | //\r |
27 | #include <Library/MemoryAllocationLib.h>\r |
28 | #include <Library/PeiServicesTablePointerLib.h>\r |
29 | #include <Library/BaseMemoryLib.h>\r |
30 | #include <Library/DebugLib.h>\r |
e386b444 |
31 | \r |
32 | #include "MemoryAllocationLibInternals.h"\r |
33 | \r |
34 | /**\r |
35 | Allocates one or more 4KB pages of a certain memory type.\r |
36 | \r |
37 | Allocates the number of 4KB pages of a certain memory type and returns a pointer to the allocated\r |
38 | buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL is returned.\r |
39 | If there is not enough memory remaining to satisfy the request, then NULL is returned.\r |
40 | \r |
41 | @param MemoryType The type of memory to allocate.\r |
42 | @param Pages The number of 4 KB pages to allocate.\r |
43 | \r |
44 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
45 | \r |
46 | **/\r |
47 | VOID *\r |
48 | InternalAllocatePages (\r |
49 | IN EFI_MEMORY_TYPE MemoryType, \r |
50 | IN UINTN Pages\r |
51 | )\r |
52 | {\r |
53 | EFI_STATUS Status;\r |
54 | EFI_PHYSICAL_ADDRESS Memory; \r |
55 | EFI_PEI_SERVICES **PeiServices;\r |
56 | \r |
57 | if (Pages == 0) {\r |
58 | return NULL;\r |
59 | }\r |
60 | \r |
61 | PeiServices = GetPeiServicesTablePointer ();\r |
62 | Status = (*PeiServices)->AllocatePages (PeiServices, MemoryType, Pages, &Memory);\r |
63 | if (EFI_ERROR (Status)) {\r |
64 | Memory = 0;\r |
65 | }\r |
66 | return (VOID *) (UINTN) Memory;\r |
67 | }\r |
68 | \r |
69 | /**\r |
70 | Allocates one or more 4KB pages of type EfiBootServicesData.\r |
71 | \r |
72 | Allocates the number of 4KB pages of type EfiBootServicesData and returns a pointer to the\r |
73 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r |
74 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r |
75 | returned.\r |
76 | \r |
77 | @param Pages The number of 4 KB pages to allocate.\r |
78 | \r |
79 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
80 | \r |
81 | **/\r |
82 | VOID *\r |
83 | EFIAPI\r |
84 | AllocatePages (\r |
85 | IN UINTN Pages\r |
86 | )\r |
87 | {\r |
88 | return InternalAllocatePages (EfiBootServicesData, Pages);\r |
89 | }\r |
90 | \r |
91 | /**\r |
92 | Allocates one or more 4KB pages of type EfiRuntimeServicesData.\r |
93 | \r |
94 | Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the\r |
95 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r |
96 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r |
97 | returned.\r |
98 | \r |
99 | @param Pages The number of 4 KB pages to allocate.\r |
100 | \r |
101 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
102 | \r |
103 | **/\r |
104 | VOID *\r |
105 | EFIAPI\r |
106 | AllocateRuntimePages (\r |
107 | IN UINTN Pages\r |
108 | )\r |
109 | {\r |
110 | return InternalAllocatePages (EfiRuntimeServicesData, Pages);\r |
111 | }\r |
112 | \r |
113 | /**\r |
114 | Allocates one or more 4KB pages of type EfiReservedMemoryType.\r |
115 | \r |
116 | Allocates the number of 4KB pages of type EfiReservedMemoryType and returns a pointer to the\r |
117 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r |
118 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r |
119 | returned.\r |
120 | \r |
121 | @param Pages The number of 4 KB pages to allocate.\r |
122 | \r |
123 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
124 | \r |
125 | **/\r |
126 | VOID *\r |
127 | EFIAPI\r |
128 | AllocateReservedPages (\r |
129 | IN UINTN Pages\r |
130 | )\r |
131 | {\r |
132 | return InternalAllocatePages (EfiReservedMemoryType, Pages);\r |
133 | }\r |
134 | \r |
135 | /**\r |
136 | Frees one or more 4KB pages that were previously allocated with one of the page allocation\r |
137 | functions in the Memory Allocation Library.\r |
138 | \r |
139 | Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r |
140 | must have been allocated on a previous call to the page allocation services of the Memory\r |
141 | Allocation Library.\r |
142 | If Buffer was not allocated with a page allocation function in the Memory Allocation Library,\r |
143 | then ASSERT().\r |
144 | If Pages is zero, then ASSERT().\r |
145 | \r |
146 | @param Buffer Pointer to the buffer of pages to free.\r |
147 | @param Pages The number of 4 KB pages to free.\r |
148 | \r |
149 | **/\r |
150 | VOID\r |
151 | EFIAPI\r |
152 | FreePages (\r |
153 | IN VOID *Buffer,\r |
154 | IN UINTN Pages\r |
155 | )\r |
156 | {\r |
157 | //\r |
158 | // PEI phase does not support to free pages, so leave it as NOP.\r |
159 | //\r |
160 | }\r |
161 | \r |
162 | /**\r |
163 | Allocates one or more 4KB pages of a certain memory type at a specified alignment.\r |
164 | \r |
165 | Allocates the number of 4KB pages specified by Pages of a certain memory type with an alignment\r |
166 | specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is returned.\r |
167 | If there is not enough memory at the specified alignment remaining to satisfy the request, then\r |
168 | NULL is returned.\r |
169 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
170 | \r |
171 | @param MemoryType The type of memory to allocate.\r |
172 | @param Pages The number of 4 KB pages to allocate.\r |
173 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
174 | If Alignment is zero, then byte alignment is used.\r |
175 | \r |
176 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
177 | \r |
178 | **/\r |
179 | VOID *\r |
180 | InternalAllocateAlignedPages (\r |
181 | IN EFI_MEMORY_TYPE MemoryType, \r |
182 | IN UINTN Pages,\r |
183 | IN UINTN Alignment\r |
184 | )\r |
185 | {\r |
186 | VOID *Memory;\r |
187 | UINTN AlignmentMask;\r |
188 | \r |
189 | //\r |
190 | // Alignment must be a power of two or zero.\r |
191 | //\r |
192 | ASSERT ((Alignment & (Alignment - 1)) == 0);\r |
193 | \r |
194 | if (Pages == 0) {\r |
195 | return NULL;\r |
196 | }\r |
197 | //\r |
198 | // Make sure that Pages plus EFI_SIZE_TO_PAGES (Alignment) does not overflow.\r |
199 | //\r |
200 | ASSERT (Pages <= (MAX_ADDRESS - EFI_SIZE_TO_PAGES (Alignment)));\r |
201 | //\r |
202 | // We would rather waste some memory to save PEI code size.\r |
203 | //\r |
204 | Memory = InternalAllocatePages (MemoryType, Pages + EFI_SIZE_TO_PAGES (Alignment));\r |
205 | if (Alignment == 0) {\r |
206 | AlignmentMask = Alignment;\r |
207 | } else {\r |
208 | AlignmentMask = Alignment - 1; \r |
209 | }\r |
210 | return (VOID *) (UINTN) (((UINTN) Memory + AlignmentMask) & ~AlignmentMask);\r |
211 | }\r |
212 | \r |
213 | /**\r |
214 | Allocates one or more 4KB pages of type EfiBootServicesData at a specified alignment.\r |
215 | \r |
216 | Allocates the number of 4KB pages specified by Pages of type EfiBootServicesData with an\r |
217 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r |
218 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r |
219 | request, then NULL is returned.\r |
220 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
221 | \r |
222 | @param Pages The number of 4 KB pages to allocate.\r |
223 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
224 | If Alignment is zero, then byte alignment is used.\r |
225 | \r |
226 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
227 | \r |
228 | **/\r |
229 | VOID *\r |
230 | EFIAPI\r |
231 | AllocateAlignedPages (\r |
232 | IN UINTN Pages,\r |
233 | IN UINTN Alignment\r |
234 | )\r |
235 | {\r |
236 | return InternalAllocateAlignedPages (EfiBootServicesData, Pages, Alignment);\r |
237 | }\r |
238 | \r |
239 | /**\r |
240 | Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.\r |
241 | \r |
242 | Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData with an\r |
243 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r |
244 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r |
245 | request, then NULL is returned.\r |
246 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
247 | \r |
248 | @param Pages The number of 4 KB pages to allocate.\r |
249 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
250 | If Alignment is zero, then byte alignment is used.\r |
251 | \r |
252 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
253 | \r |
254 | **/\r |
255 | VOID *\r |
256 | EFIAPI\r |
257 | AllocateAlignedRuntimePages (\r |
258 | IN UINTN Pages,\r |
259 | IN UINTN Alignment\r |
260 | )\r |
261 | {\r |
262 | return InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);\r |
263 | }\r |
264 | \r |
265 | /**\r |
266 | Allocates one or more 4KB pages of type EfiReservedMemoryType at a specified alignment.\r |
267 | \r |
268 | Allocates the number of 4KB pages specified by Pages of type EfiReservedMemoryType with an\r |
269 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r |
270 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r |
271 | request, then NULL is returned.\r |
272 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
273 | \r |
274 | @param Pages The number of 4 KB pages to allocate.\r |
275 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
276 | If Alignment is zero, then byte alignment is used.\r |
277 | \r |
278 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
279 | \r |
280 | **/\r |
281 | VOID *\r |
282 | EFIAPI\r |
283 | AllocateAlignedReservedPages (\r |
284 | IN UINTN Pages,\r |
285 | IN UINTN Alignment\r |
286 | )\r |
287 | {\r |
288 | return InternalAllocateAlignedPages (EfiReservedMemoryType, Pages, Alignment);\r |
289 | }\r |
290 | \r |
291 | /**\r |
292 | Frees one or more 4KB pages that were previously allocated with one of the aligned page\r |
293 | allocation functions in the Memory Allocation Library.\r |
294 | \r |
295 | Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r |
296 | must have been allocated on a previous call to the aligned page allocation services of the Memory\r |
297 | Allocation Library.\r |
298 | If Buffer was not allocated with an aligned page allocation function in the Memory Allocation\r |
299 | Library, then ASSERT().\r |
300 | If Pages is zero, then ASSERT().\r |
301 | \r |
302 | @param Buffer Pointer to the buffer of pages to free.\r |
303 | @param Pages The number of 4 KB pages to free.\r |
304 | \r |
305 | **/\r |
306 | VOID\r |
307 | EFIAPI\r |
308 | FreeAlignedPages (\r |
309 | IN VOID *Buffer,\r |
310 | IN UINTN Pages\r |
311 | )\r |
312 | {\r |
313 | //\r |
314 | // PEI phase does not support to free pages, so leave it as NOP.\r |
315 | //\r |
316 | }\r |
317 | \r |
318 | /**\r |
319 | Allocates a buffer of a certain pool type.\r |
320 | \r |
321 | Allocates the number bytes specified by AllocationSize of a certain pool type and returns a\r |
322 | pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r |
323 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r |
324 | \r |
325 | @param MemoryType The type of memory to allocate.\r |
326 | @param AllocationSize The number of bytes to allocate.\r |
327 | \r |
328 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
329 | \r |
330 | **/\r |
331 | VOID *\r |
332 | InternalAllocatePool (\r |
333 | IN EFI_MEMORY_TYPE MemoryType, \r |
334 | IN UINTN AllocationSize\r |
335 | )\r |
336 | {\r |
337 | //\r |
338 | // If we need lots of small runtime/reserved memory type from PEI in the future, \r |
339 | // we can consider providing a more complex algorithm that allocates runtime pages and \r |
340 | // provide pool allocations from those pages. \r |
341 | //\r |
342 | return InternalAllocatePages (MemoryType, EFI_SIZE_TO_PAGES (AllocationSize));\r |
343 | }\r |
344 | \r |
345 | /**\r |
346 | Allocates a buffer of type EfiBootServicesData.\r |
347 | \r |
348 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData and returns a\r |
349 | pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r |
350 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r |
351 | \r |
352 | @param AllocationSize The number of bytes to allocate.\r |
353 | \r |
354 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
355 | \r |
356 | **/\r |
357 | VOID *\r |
358 | EFIAPI\r |
359 | AllocatePool (\r |
360 | IN UINTN AllocationSize\r |
361 | )\r |
362 | {\r |
363 | EFI_STATUS Status;\r |
364 | EFI_PEI_SERVICES **PeiServices;\r |
365 | VOID *Buffer;\r |
366 | \r |
367 | PeiServices = GetPeiServicesTablePointer ();\r |
368 | \r |
369 | Status = (*PeiServices)->AllocatePool (PeiServices, AllocationSize, &Buffer);\r |
370 | if (EFI_ERROR (Status)) {\r |
371 | Buffer = NULL;\r |
372 | }\r |
373 | return Buffer;\r |
374 | }\r |
375 | \r |
376 | /**\r |
377 | Allocates a buffer of type EfiRuntimeServicesData.\r |
378 | \r |
379 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData and returns\r |
380 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r |
381 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r |
382 | \r |
383 | @param AllocationSize The number of bytes to allocate.\r |
384 | \r |
385 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
386 | \r |
387 | **/\r |
388 | VOID *\r |
389 | EFIAPI\r |
390 | AllocateRuntimePool (\r |
391 | IN UINTN AllocationSize\r |
392 | )\r |
393 | {\r |
394 | return InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);\r |
395 | }\r |
396 | \r |
397 | /**\r |
398 | Allocates a buffer of type EfieservedMemoryType.\r |
399 | \r |
400 | Allocates the number bytes specified by AllocationSize of type EfieservedMemoryType and returns\r |
401 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r |
402 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r |
403 | \r |
404 | @param AllocationSize The number of bytes to allocate.\r |
405 | \r |
406 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
407 | \r |
408 | **/\r |
409 | VOID *\r |
410 | EFIAPI\r |
411 | AllocateReservedPool (\r |
412 | IN UINTN AllocationSize\r |
413 | )\r |
414 | {\r |
415 | return InternalAllocatePool (EfiReservedMemoryType, AllocationSize);\r |
416 | }\r |
417 | \r |
418 | /**\r |
419 | Allocates and zeros a buffer of a certian pool type.\r |
420 | \r |
421 | Allocates the number bytes specified by AllocationSize of a certian pool type, clears the buffer\r |
422 | with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid\r |
423 | buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request,\r |
424 | then NULL is returned.\r |
425 | \r |
426 | @param PoolType The type of memory to allocate.\r |
427 | @param AllocationSize The number of bytes to allocate and zero.\r |
428 | \r |
429 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
430 | \r |
431 | **/\r |
432 | VOID *\r |
433 | InternalAllocateZeroPool (\r |
434 | IN EFI_MEMORY_TYPE PoolType, \r |
435 | IN UINTN AllocationSize\r |
436 | ) \r |
437 | {\r |
438 | VOID *Memory;\r |
439 | \r |
440 | Memory = InternalAllocatePool (PoolType, AllocationSize);\r |
441 | if (Memory != NULL) {\r |
442 | Memory = ZeroMem (Memory, AllocationSize);\r |
443 | }\r |
444 | return Memory;\r |
445 | }\r |
446 | \r |
447 | /**\r |
448 | Allocates and zeros a buffer of type EfiBootServicesData.\r |
449 | \r |
450 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, clears the\r |
451 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r |
452 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r |
453 | request, then NULL is returned.\r |
454 | \r |
455 | @param AllocationSize The number of bytes to allocate and zero.\r |
456 | \r |
457 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
458 | \r |
459 | **/\r |
460 | VOID *\r |
461 | EFIAPI\r |
462 | AllocateZeroPool (\r |
463 | IN UINTN AllocationSize\r |
464 | )\r |
465 | {\r |
466 | VOID *Memory;\r |
467 | \r |
468 | Memory = AllocatePool (AllocationSize);\r |
469 | if (Memory != NULL) {\r |
470 | Memory = ZeroMem (Memory, AllocationSize);\r |
471 | }\r |
472 | return Memory;\r |
473 | }\r |
474 | \r |
475 | /**\r |
476 | Allocates and zeros a buffer of type EfiRuntimeServicesData.\r |
477 | \r |
478 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, clears the\r |
479 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r |
480 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r |
481 | request, then NULL is returned.\r |
482 | \r |
483 | @param AllocationSize The number of bytes to allocate and zero.\r |
484 | \r |
485 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
486 | \r |
487 | **/\r |
488 | VOID *\r |
489 | EFIAPI\r |
490 | AllocateRuntimeZeroPool (\r |
491 | IN UINTN AllocationSize\r |
492 | )\r |
493 | {\r |
494 | return InternalAllocateZeroPool (EfiRuntimeServicesData, AllocationSize);\r |
495 | }\r |
496 | \r |
497 | /**\r |
498 | Allocates and zeros a buffer of type EfiReservedMemoryType.\r |
499 | \r |
500 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, clears the\r |
501 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r |
502 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r |
503 | request, then NULL is returned.\r |
504 | \r |
505 | @param AllocationSize The number of bytes to allocate and zero.\r |
506 | \r |
507 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
508 | \r |
509 | **/\r |
510 | VOID *\r |
511 | EFIAPI\r |
512 | AllocateReservedZeroPool (\r |
513 | IN UINTN AllocationSize\r |
514 | )\r |
515 | {\r |
516 | return InternalAllocateZeroPool (EfiReservedMemoryType, AllocationSize);\r |
517 | }\r |
518 | \r |
519 | /**\r |
520 | Copies a buffer to an allocated buffer of a certian pool type.\r |
521 | \r |
522 | Allocates the number bytes specified by AllocationSize of a certian pool type, copies\r |
523 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r |
524 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
525 | is not enough memory remaining to satisfy the request, then NULL is returned.\r |
526 | If Buffer is NULL, then ASSERT().\r |
527 | If AllocationSize is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT(). \r |
528 | \r |
529 | @param PoolType The type of pool to allocate.\r |
530 | @param AllocationSize The number of bytes to allocate and zero.\r |
531 | @param Buffer The buffer to copy to the allocated buffer.\r |
532 | \r |
533 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
534 | \r |
535 | **/\r |
536 | VOID *\r |
537 | InternalAllocateCopyPool (\r |
538 | IN EFI_MEMORY_TYPE PoolType, \r |
539 | IN UINTN AllocationSize,\r |
540 | IN CONST VOID *Buffer\r |
541 | ) \r |
542 | {\r |
543 | VOID *Memory;\r |
544 | \r |
545 | ASSERT (Buffer != NULL);\r |
546 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r |
547 | \r |
548 | Memory = InternalAllocatePool (PoolType, AllocationSize);\r |
549 | if (Memory != NULL) {\r |
550 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r |
551 | }\r |
552 | return Memory;\r |
553 | } \r |
554 | \r |
555 | /**\r |
556 | Copies a buffer to an allocated buffer of type EfiBootServicesData.\r |
557 | \r |
558 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, copies\r |
559 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r |
560 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
561 | is not enough memory remaining to satisfy the request, then NULL is returned.\r |
562 | If Buffer is NULL, then ASSERT().\r |
563 | If AllocationSize is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT(). \r |
564 | \r |
565 | @param AllocationSize The number of bytes to allocate and zero.\r |
566 | @param Buffer The buffer to copy to the allocated buffer.\r |
567 | \r |
568 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
569 | \r |
570 | **/\r |
571 | VOID *\r |
572 | EFIAPI\r |
573 | AllocateCopyPool (\r |
574 | IN UINTN AllocationSize,\r |
575 | IN CONST VOID *Buffer\r |
576 | )\r |
577 | {\r |
578 | VOID *Memory;\r |
579 | \r |
580 | ASSERT (Buffer != NULL);\r |
581 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r |
582 | \r |
583 | Memory = AllocatePool (AllocationSize);\r |
584 | if (Memory != NULL) {\r |
585 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r |
586 | }\r |
587 | return Memory;\r |
588 | }\r |
589 | \r |
590 | /**\r |
591 | Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.\r |
592 | \r |
593 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, copies\r |
594 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r |
595 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
596 | is not enough memory remaining to satisfy the request, then NULL is returned.\r |
597 | If Buffer is NULL, then ASSERT().\r |
598 | If AllocationSize is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT(). \r |
599 | \r |
600 | @param AllocationSize The number of bytes to allocate and zero.\r |
601 | @param Buffer The buffer to copy to the allocated buffer.\r |
602 | \r |
603 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
604 | \r |
605 | **/\r |
606 | VOID *\r |
607 | EFIAPI\r |
608 | AllocateRuntimeCopyPool (\r |
609 | IN UINTN AllocationSize,\r |
610 | IN CONST VOID *Buffer\r |
611 | )\r |
612 | {\r |
613 | return InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer);\r |
614 | }\r |
615 | \r |
616 | /**\r |
617 | Copies a buffer to an allocated buffer of type EfiReservedMemoryType.\r |
618 | \r |
619 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, copies\r |
620 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r |
621 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
622 | is not enough memory remaining to satisfy the request, then NULL is returned.\r |
623 | If Buffer is NULL, then ASSERT().\r |
624 | If AllocationSize is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT(). \r |
625 | \r |
626 | @param AllocationSize The number of bytes to allocate and zero.\r |
627 | @param Buffer The buffer to copy to the allocated buffer.\r |
628 | \r |
629 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
630 | \r |
631 | **/\r |
632 | VOID *\r |
633 | EFIAPI\r |
634 | AllocateReservedCopyPool (\r |
635 | IN UINTN AllocationSize,\r |
636 | IN CONST VOID *Buffer\r |
637 | )\r |
638 | {\r |
639 | return InternalAllocateCopyPool (EfiReservedMemoryType, AllocationSize, Buffer);\r |
640 | }\r |
641 | \r |
642 | /**\r |
643 | Frees a buffer that was previously allocated with one of the pool allocation functions in the\r |
644 | Memory Allocation Library.\r |
645 | \r |
646 | Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the\r |
647 | pool allocation services of the Memory Allocation Library.\r |
648 | If Buffer was not allocated with a pool allocation function in the Memory Allocation Library,\r |
649 | then ASSERT().\r |
650 | \r |
651 | @param Buffer Pointer to the buffer to free.\r |
652 | \r |
653 | **/\r |
654 | VOID\r |
655 | EFIAPI\r |
656 | FreePool (\r |
657 | IN VOID *Buffer\r |
658 | )\r |
659 | {\r |
660 | //\r |
661 | // PEI phase does not support to free pool, so leave it as NOP.\r |
662 | //\r |
663 | }\r |
664 | \r |
665 | /**\r |
666 | Allocates a buffer of a certain pool type at a specified alignment.\r |
667 | \r |
668 | Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment\r |
669 | specified by Alignment. The allocated buffer is returned. If AllocationSize is 0, then a valid\r |
670 | buffer of 0 size is returned. If there is not enough memory at the specified alignment remaining\r |
671 | to satisfy the request, then NULL is returned.\r |
672 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
673 | \r |
674 | @param PoolType The type of pool to allocate.\r |
675 | @param AllocationSize The number of bytes to allocate.\r |
676 | @param Alignment The requested alignment of the allocation. Must be a power of two. If Alignment is zero, then byte alignment is used.\r |
677 | If Alignment is zero, then byte alignment is used.\r |
678 | \r |
679 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
680 | \r |
681 | **/\r |
682 | VOID *\r |
683 | InternalAllocateAlignedPool (\r |
684 | IN EFI_MEMORY_TYPE PoolType,\r |
685 | IN UINTN AllocationSize,\r |
686 | IN UINTN Alignment\r |
687 | )\r |
688 | {\r |
689 | VOID *RawAddress;\r |
690 | UINTN AlignedAddress;\r |
691 | UINTN AlignmentMask;\r |
692 | \r |
693 | //\r |
694 | // Alignment must be a power of two or zero.\r |
695 | //\r |
696 | ASSERT ((Alignment & (Alignment - 1)) == 0);\r |
697 | \r |
698 | if (Alignment == 0) {\r |
699 | AlignmentMask = Alignment;\r |
700 | } else {\r |
701 | AlignmentMask = Alignment - 1;\r |
702 | }\r |
703 | //\r |
704 | // Make sure that AllocationSize plus AlignmentMask does not overflow.\r |
705 | //\r |
706 | ASSERT (AllocationSize <= (MAX_ADDRESS - AlignmentMask));\r |
707 | \r |
708 | RawAddress = InternalAllocatePool (PoolType, AllocationSize + AlignmentMask);\r |
709 | \r |
710 | AlignedAddress = ((UINTN) RawAddress + AlignmentMask) & ~AlignmentMask;\r |
711 | \r |
712 | return (VOID *) AlignedAddress;\r |
713 | }\r |
714 | \r |
715 | /**\r |
716 | Allocates a buffer of type EfiBootServicesData at a specified alignment.\r |
717 | \r |
718 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData with an\r |
719 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r |
720 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r |
721 | alignment remaining to satisfy the request, then NULL is returned.\r |
722 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
723 | \r |
724 | @param AllocationSize The number of bytes to allocate.\r |
725 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
726 | If Alignment is zero, then byte alignment is used.\r |
727 | \r |
728 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
729 | \r |
730 | **/\r |
731 | VOID *\r |
732 | EFIAPI\r |
733 | AllocateAlignedPool (\r |
734 | IN UINTN AllocationSize,\r |
735 | IN UINTN Alignment\r |
736 | )\r |
737 | {\r |
738 | VOID *RawAddress;\r |
739 | UINTN AlignedAddress;\r |
740 | UINTN AlignmentMask;\r |
741 | \r |
742 | //\r |
743 | // Alignment must be a power of two or zero.\r |
744 | //\r |
745 | ASSERT ((Alignment & (Alignment - 1)) == 0);\r |
746 | \r |
747 | if (Alignment == 0) {\r |
748 | AlignmentMask = Alignment;\r |
749 | } else {\r |
750 | AlignmentMask = Alignment - 1;\r |
751 | }\r |
752 | \r |
753 | //\r |
754 | // Make sure that AllocationSize plus AlignmentMask does not overflow.\r |
755 | //\r |
756 | ASSERT (AllocationSize <= (MAX_ADDRESS - AlignmentMask));\r |
757 | \r |
758 | RawAddress = AllocatePool (AllocationSize + AlignmentMask);\r |
759 | \r |
760 | AlignedAddress = ((UINTN) RawAddress + AlignmentMask) & ~AlignmentMask;\r |
761 | \r |
762 | return (VOID *) AlignedAddress;\r |
763 | }\r |
764 | \r |
765 | /**\r |
766 | Allocates a buffer of type EfiRuntimeServicesData at a specified alignment.\r |
767 | \r |
768 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData with an\r |
769 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r |
770 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r |
771 | alignment remaining to satisfy the request, then NULL is returned.\r |
772 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
773 | \r |
774 | @param AllocationSize The number of bytes to allocate.\r |
775 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
776 | If Alignment is zero, then byte alignment is used.\r |
777 | \r |
778 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
779 | \r |
780 | **/\r |
781 | VOID *\r |
782 | EFIAPI\r |
783 | AllocateAlignedRuntimePool (\r |
784 | IN UINTN AllocationSize,\r |
785 | IN UINTN Alignment\r |
786 | )\r |
787 | {\r |
788 | return InternalAllocateAlignedPool (EfiRuntimeServicesData, AllocationSize, Alignment);\r |
789 | }\r |
790 | \r |
791 | /**\r |
792 | Allocates a buffer of type EfieservedMemoryType at a specified alignment.\r |
793 | \r |
794 | Allocates the number bytes specified by AllocationSize of type EfieservedMemoryType with an\r |
795 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r |
796 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r |
797 | alignment remaining to satisfy the request, then NULL is returned.\r |
798 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
799 | \r |
800 | @param AllocationSize The number of bytes to allocate.\r |
801 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
802 | If Alignment is zero, then byte alignment is used.\r |
803 | \r |
804 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
805 | \r |
806 | **/\r |
807 | VOID *\r |
808 | EFIAPI\r |
809 | AllocateAlignedReservedPool (\r |
810 | IN UINTN AllocationSize,\r |
811 | IN UINTN Alignment\r |
812 | )\r |
813 | {\r |
814 | return InternalAllocateAlignedPool (EfiReservedMemoryType, AllocationSize, Alignment);\r |
815 | }\r |
816 | \r |
817 | /**\r |
818 | Allocates and zeros a buffer of a certain pool type at a specified alignment.\r |
819 | \r |
820 | Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment\r |
821 | specified by Alignment, clears the buffer with zeros, and returns a pointer to the allocated\r |
822 | buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not\r |
823 | enough memory at the specified alignment remaining to satisfy the request, then NULL is returned.\r |
824 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
825 | \r |
826 | @param PoolType The type of pool to allocate.\r |
827 | @param AllocationSize The number of bytes to allocate.\r |
828 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
829 | If Alignment is zero, then byte alignment is used.\r |
830 | \r |
831 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
832 | \r |
833 | **/\r |
834 | VOID *\r |
835 | InternalAllocateAlignedZeroPool (\r |
836 | IN EFI_MEMORY_TYPE PoolType,\r |
837 | IN UINTN AllocationSize,\r |
838 | IN UINTN Alignment\r |
839 | )\r |
840 | {\r |
841 | VOID *Memory;\r |
842 | \r |
843 | Memory = InternalAllocateAlignedPool (PoolType, AllocationSize, Alignment);\r |
844 | if (Memory != NULL) {\r |
845 | Memory = ZeroMem (Memory, AllocationSize);\r |
846 | }\r |
847 | return Memory;\r |
848 | }\r |
849 | \r |
850 | /**\r |
851 | Allocates and zeros a buffer of type EfiBootServicesData at a specified alignment.\r |
852 | \r |
853 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData with an\r |
854 | alignment specified by Alignment, clears the buffer with zeros, and returns a pointer to the\r |
855 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
856 | is not enough memory at the specified alignment remaining to satisfy the request, then NULL is\r |
857 | returned.\r |
858 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
859 | \r |
860 | @param AllocationSize The number of bytes to allocate.\r |
861 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
862 | If Alignment is zero, then byte alignment is used.\r |
863 | \r |
864 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
865 | \r |
866 | **/\r |
867 | VOID *\r |
868 | EFIAPI\r |
869 | AllocateAlignedZeroPool (\r |
870 | IN UINTN AllocationSize,\r |
871 | IN UINTN Alignment\r |
872 | )\r |
873 | {\r |
874 | VOID *Memory;\r |
875 | \r |
876 | Memory = AllocateAlignedPool (AllocationSize, Alignment);\r |
877 | if (Memory != NULL) {\r |
878 | Memory = ZeroMem (Memory, AllocationSize);\r |
879 | }\r |
880 | return Memory;\r |
881 | }\r |
882 | \r |
883 | /**\r |
884 | Allocates and zeros a buffer of type EfiRuntimeServicesData at a specified alignment.\r |
885 | \r |
886 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData with an\r |
887 | alignment specified by Alignment, clears the buffer with zeros, and returns a pointer to the\r |
888 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
889 | is not enough memory at the specified alignment remaining to satisfy the request, then NULL is\r |
890 | returned.\r |
891 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
892 | \r |
893 | @param AllocationSize The number of bytes to allocate.\r |
894 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
895 | If Alignment is zero, then byte alignment is used.\r |
896 | \r |
897 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
898 | \r |
899 | **/\r |
900 | VOID *\r |
901 | EFIAPI\r |
902 | AllocateAlignedRuntimeZeroPool (\r |
903 | IN UINTN AllocationSize,\r |
904 | IN UINTN Alignment\r |
905 | )\r |
906 | {\r |
907 | return InternalAllocateAlignedZeroPool (EfiRuntimeServicesData, AllocationSize, Alignment);\r |
908 | }\r |
909 | \r |
910 | /**\r |
911 | Allocates and zeros a buffer of type EfieservedMemoryType at a specified alignment.\r |
912 | \r |
913 | Allocates the number bytes specified by AllocationSize of type EfieservedMemoryType with an\r |
914 | alignment specified by Alignment, clears the buffer with zeros, and returns a pointer to the\r |
915 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
916 | is not enough memory at the specified alignment remaining to satisfy the request, then NULL is\r |
917 | returned.\r |
918 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
919 | \r |
920 | @param AllocationSize The number of bytes to allocate.\r |
921 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
922 | If Alignment is zero, then byte alignment is used.\r |
923 | \r |
924 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
925 | \r |
926 | **/\r |
927 | VOID *\r |
928 | EFIAPI\r |
929 | AllocateAlignedReservedZeroPool (\r |
930 | IN UINTN AllocationSize,\r |
931 | IN UINTN Alignment\r |
932 | )\r |
933 | {\r |
934 | return InternalAllocateAlignedZeroPool (EfiReservedMemoryType, AllocationSize, Alignment);\r |
935 | }\r |
936 | \r |
937 | /**\r |
938 | Copies a buffer to an allocated buffer of a certain pool type at a specified alignment.\r |
939 | \r |
940 | Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment\r |
941 | specified by Alignment. The allocated buffer is returned. If AllocationSize is 0, then a valid\r |
942 | buffer of 0 size is returned. If there is not enough memory at the specified alignment remaining\r |
943 | to satisfy the request, then NULL is returned.\r |
944 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
945 | \r |
946 | @param PoolType The type of pool to allocate.\r |
947 | @param AllocationSize The number of bytes to allocate.\r |
948 | @param Buffer The buffer to copy to the allocated buffer.\r |
949 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
950 | If Alignment is zero, then byte alignment is used.\r |
951 | \r |
952 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
953 | \r |
954 | **/\r |
955 | VOID *\r |
956 | InternalAllocateAlignedCopyPool (\r |
957 | IN EFI_MEMORY_TYPE PoolType,\r |
958 | IN UINTN AllocationSize,\r |
959 | IN CONST VOID *Buffer,\r |
960 | IN UINTN Alignment\r |
961 | )\r |
962 | {\r |
963 | VOID *Memory;\r |
964 | \r |
965 | ASSERT (Buffer != NULL);\r |
966 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r |
967 | \r |
968 | Memory = InternalAllocateAlignedPool (PoolType, AllocationSize, Alignment);\r |
969 | if (Memory != NULL) {\r |
970 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r |
971 | }\r |
972 | return Memory;\r |
973 | }\r |
974 | \r |
975 | /**\r |
976 | Copies a buffer to an allocated buffer of type EfiBootServicesData at a specified alignment.\r |
977 | \r |
978 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData type with an\r |
979 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r |
980 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r |
981 | alignment remaining to satisfy the request, then NULL is returned.\r |
982 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
983 | \r |
984 | @param AllocationSize The number of bytes to allocate.\r |
985 | @param Buffer The buffer to copy to the allocated buffer.\r |
986 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
987 | If Alignment is zero, then byte alignment is used.\r |
988 | \r |
989 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
990 | \r |
991 | **/\r |
992 | VOID *\r |
993 | EFIAPI\r |
994 | AllocateAlignedCopyPool (\r |
995 | IN UINTN AllocationSize,\r |
996 | IN CONST VOID *Buffer,\r |
997 | IN UINTN Alignment\r |
998 | )\r |
999 | {\r |
1000 | VOID *Memory;\r |
1001 | \r |
1002 | ASSERT (Buffer != NULL);\r |
1003 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r |
1004 | \r |
1005 | Memory = AllocateAlignedPool (AllocationSize, Alignment);\r |
1006 | if (Memory != NULL) {\r |
1007 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r |
1008 | }\r |
1009 | return Memory;\r |
1010 | }\r |
1011 | \r |
1012 | /**\r |
1013 | Copies a buffer to an allocated buffer of type EfiRuntimeServicesData at a specified alignment.\r |
1014 | \r |
1015 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData type with an\r |
1016 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r |
1017 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r |
1018 | alignment remaining to satisfy the request, then NULL is returned.\r |
1019 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
1020 | \r |
1021 | @param AllocationSize The number of bytes to allocate.\r |
1022 | @param Buffer The buffer to copy to the allocated buffer.\r |
1023 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
1024 | If Alignment is zero, then byte alignment is used.\r |
1025 | \r |
1026 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
1027 | \r |
1028 | **/\r |
1029 | VOID *\r |
1030 | EFIAPI\r |
1031 | AllocateAlignedRuntimeCopyPool (\r |
1032 | IN UINTN AllocationSize,\r |
1033 | IN CONST VOID *Buffer,\r |
1034 | IN UINTN Alignment\r |
1035 | )\r |
1036 | {\r |
1037 | return InternalAllocateAlignedCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer, Alignment);\r |
1038 | }\r |
1039 | \r |
1040 | /**\r |
1041 | Copies a buffer to an allocated buffer of type EfiReservedMemoryType at a specified alignment.\r |
1042 | \r |
1043 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType type with an\r |
1044 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r |
1045 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r |
1046 | alignment remaining to satisfy the request, then NULL is returned.\r |
1047 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
1048 | \r |
1049 | @param AllocationSize The number of bytes to allocate.\r |
1050 | @param Buffer The buffer to copy to the allocated buffer.\r |
1051 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
1052 | If Alignment is zero, then byte alignment is used.\r |
1053 | \r |
1054 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
1055 | \r |
1056 | **/\r |
1057 | VOID *\r |
1058 | EFIAPI\r |
1059 | AllocateAlignedReservedCopyPool (\r |
1060 | IN UINTN AllocationSize,\r |
1061 | IN CONST VOID *Buffer,\r |
1062 | IN UINTN Alignment\r |
1063 | )\r |
1064 | {\r |
1065 | return InternalAllocateAlignedCopyPool (EfiReservedMemoryType, AllocationSize, Buffer, Alignment);\r |
1066 | }\r |
1067 | \r |
1068 | /**\r |
1069 | Frees a buffer that was previously allocated with one of the aligned pool allocation functions \r |
1070 | in the Memory Allocation Library.\r |
1071 | \r |
1072 | Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the\r |
1073 | aligned pool allocation services of the Memory Allocation Library.\r |
1074 | If Buffer was not allocated with an aligned pool allocation function in the Memory Allocation\r |
1075 | Library, then ASSERT().\r |
1076 | \r |
1077 | @param Buffer Pointer to the buffer to free.\r |
1078 | \r |
1079 | **/\r |
1080 | VOID\r |
1081 | EFIAPI\r |
1082 | FreeAlignedPool (\r |
1083 | IN VOID *Buffer\r |
1084 | )\r |
1085 | {\r |
1086 | //\r |
1087 | // PEI phase does not support to free pool, so leave it as NOP.\r |
1088 | //\r |
1089 | }\r |