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1 | /** @file\r |
2 | Support routines for memory allocation routines based on Standalone MM Core internal functions.\r | |
3 | \r | |
4 | Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r | |
5 | Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>\r | |
6 | \r | |
7 | This program and the accompanying materials\r | |
8 | are licensed and made available under the terms and conditions of the BSD License\r | |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #include <PiMm.h>\r | |
18 | \r | |
19 | #include <Guid/MmramMemoryReserve.h>\r | |
20 | #include <Library/MemoryAllocationLib.h>\r | |
21 | #include <Library/BaseMemoryLib.h>\r | |
22 | #include <Library/DebugLib.h>\r | |
23 | #include <Library/HobLib.h>\r | |
24 | #include "StandaloneMmCoreMemoryAllocationServices.h"\r | |
25 | \r | |
26 | EFI_MM_SYSTEM_TABLE *gMmst = NULL;\r | |
27 | \r | |
28 | /**\r | |
29 | Allocates one or more 4KB pages of a certain memory type.\r | |
30 | \r | |
31 | Allocates the number of 4KB pages of a certain memory type and returns a pointer to the allocated\r | |
32 | buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL is returned.\r | |
33 | If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
34 | \r | |
35 | @param MemoryType The type of memory to allocate.\r | |
36 | @param Pages The number of 4 KB pages to allocate.\r | |
37 | \r | |
38 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
39 | \r | |
40 | **/\r | |
41 | VOID *\r | |
42 | InternalAllocatePages (\r | |
43 | IN EFI_MEMORY_TYPE MemoryType,\r | |
44 | IN UINTN Pages\r | |
45 | )\r | |
46 | {\r | |
47 | EFI_STATUS Status;\r | |
48 | EFI_PHYSICAL_ADDRESS Memory;\r | |
49 | \r | |
50 | if (Pages == 0) {\r | |
51 | return NULL;\r | |
52 | }\r | |
53 | \r | |
54 | Status = gMmst->MmAllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);\r | |
55 | if (EFI_ERROR (Status)) {\r | |
56 | return NULL;\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 (EfiRuntimeServicesData, 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 NULL;\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. If it is not possible to free allocated pages, then this function will\r | |
134 | perform no actions.\r | |
135 | \r | |
136 | If Buffer was not allocated with a page allocation function in the Memory Allocation Library,\r | |
137 | then ASSERT().\r | |
138 | If Pages is zero, then ASSERT().\r | |
139 | \r | |
140 | @param Buffer Pointer to the buffer of pages to free.\r | |
141 | @param Pages The number of 4 KB pages to free.\r | |
142 | \r | |
143 | **/\r | |
144 | VOID\r | |
145 | EFIAPI\r | |
146 | FreePages (\r | |
147 | IN VOID *Buffer,\r | |
148 | IN UINTN Pages\r | |
149 | )\r | |
150 | {\r | |
151 | EFI_STATUS Status;\r | |
152 | \r | |
153 | ASSERT (Pages != 0);\r | |
154 | Status = gMmst->MmFreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);\r | |
155 | ASSERT_EFI_ERROR (Status);\r | |
156 | }\r | |
157 | \r | |
158 | /**\r | |
159 | Allocates one or more 4KB pages of a certain memory type at a specified alignment.\r | |
160 | \r | |
161 | Allocates the number of 4KB pages specified by Pages of a certain memory type with an alignment\r | |
162 | specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is returned.\r | |
163 | If there is not enough memory at the specified alignment remaining to satisfy the request, then\r | |
164 | NULL is returned.\r | |
165 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
166 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r | |
167 | \r | |
168 | @param MemoryType The type of memory to allocate.\r | |
169 | @param Pages The number of 4 KB pages to allocate.\r | |
170 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
171 | If Alignment is zero, then byte alignment is used.\r | |
172 | \r | |
173 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
174 | \r | |
175 | **/\r | |
176 | VOID *\r | |
177 | InternalAllocateAlignedPages (\r | |
178 | IN EFI_MEMORY_TYPE MemoryType,\r | |
179 | IN UINTN Pages,\r | |
180 | IN UINTN Alignment\r | |
181 | )\r | |
182 | {\r | |
183 | EFI_STATUS Status;\r | |
184 | EFI_PHYSICAL_ADDRESS Memory;\r | |
185 | UINTN AlignedMemory;\r | |
186 | UINTN AlignmentMask;\r | |
187 | UINTN UnalignedPages;\r | |
188 | UINTN RealPages;\r | |
189 | \r | |
190 | //\r | |
191 | // Alignment must be a power of two or zero.\r | |
192 | //\r | |
193 | ASSERT ((Alignment & (Alignment - 1)) == 0);\r | |
194 | \r | |
195 | if (Pages == 0) {\r | |
196 | return NULL;\r | |
197 | }\r | |
198 | if (Alignment > EFI_PAGE_SIZE) {\r | |
199 | //\r | |
200 | // Calculate the total number of pages since alignment is larger than page size.\r | |
201 | //\r | |
202 | AlignmentMask = Alignment - 1;\r | |
203 | RealPages = Pages + EFI_SIZE_TO_PAGES (Alignment);\r | |
204 | //\r | |
205 | // Make sure that Pages plus EFI_SIZE_TO_PAGES (Alignment) does not overflow.\r | |
206 | //\r | |
207 | ASSERT (RealPages > Pages);\r | |
208 | \r | |
209 | Status = gMmst->MmAllocatePages (AllocateAnyPages, MemoryType, RealPages, &Memory);\r | |
210 | if (EFI_ERROR (Status)) {\r | |
211 | return NULL;\r | |
212 | }\r | |
213 | AlignedMemory = ((UINTN) Memory + AlignmentMask) & ~AlignmentMask;\r | |
214 | UnalignedPages = EFI_SIZE_TO_PAGES (AlignedMemory - (UINTN) Memory);\r | |
215 | if (UnalignedPages > 0) {\r | |
216 | //\r | |
217 | // Free first unaligned page(s).\r | |
218 | //\r | |
219 | Status = gMmst->MmFreePages (Memory, UnalignedPages);\r | |
220 | ASSERT_EFI_ERROR (Status);\r | |
221 | }\r | |
222 | Memory = (EFI_PHYSICAL_ADDRESS) (AlignedMemory + EFI_PAGES_TO_SIZE (Pages));\r | |
223 | UnalignedPages = RealPages - Pages - UnalignedPages;\r | |
224 | if (UnalignedPages > 0) {\r | |
225 | //\r | |
226 | // Free last unaligned page(s).\r | |
227 | //\r | |
228 | Status = gMmst->MmFreePages (Memory, UnalignedPages);\r | |
229 | ASSERT_EFI_ERROR (Status);\r | |
230 | }\r | |
231 | } else {\r | |
232 | //\r | |
233 | // Do not over-allocate pages in this case.\r | |
234 | //\r | |
235 | Status = gMmst->MmAllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);\r | |
236 | if (EFI_ERROR (Status)) {\r | |
237 | return NULL;\r | |
238 | }\r | |
239 | AlignedMemory = (UINTN) Memory;\r | |
240 | }\r | |
241 | return (VOID *) AlignedMemory;\r | |
242 | }\r | |
243 | \r | |
244 | /**\r | |
245 | Allocates one or more 4KB pages of type EfiBootServicesData at a specified alignment.\r | |
246 | \r | |
247 | Allocates the number of 4KB pages specified by Pages of type EfiBootServicesData with an\r | |
248 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
249 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
250 | request, then NULL is returned.\r | |
251 | \r | |
252 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
253 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r | |
254 | \r | |
255 | @param Pages The number of 4 KB pages to allocate.\r | |
256 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
257 | If Alignment is zero, then byte alignment is used.\r | |
258 | \r | |
259 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
260 | \r | |
261 | **/\r | |
262 | VOID *\r | |
263 | EFIAPI\r | |
264 | AllocateAlignedPages (\r | |
265 | IN UINTN Pages,\r | |
266 | IN UINTN Alignment\r | |
267 | )\r | |
268 | {\r | |
269 | return InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);\r | |
270 | }\r | |
271 | \r | |
272 | /**\r | |
273 | Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.\r | |
274 | \r | |
275 | Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData with an\r | |
276 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
277 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
278 | request, then NULL is returned.\r | |
279 | \r | |
280 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
281 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r | |
282 | \r | |
283 | @param Pages The number of 4 KB pages to allocate.\r | |
284 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
285 | If Alignment is zero, then byte alignment is used.\r | |
286 | \r | |
287 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
288 | \r | |
289 | **/\r | |
290 | VOID *\r | |
291 | EFIAPI\r | |
292 | AllocateAlignedRuntimePages (\r | |
293 | IN UINTN Pages,\r | |
294 | IN UINTN Alignment\r | |
295 | )\r | |
296 | {\r | |
297 | return InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);\r | |
298 | }\r | |
299 | \r | |
300 | /**\r | |
301 | Allocates one or more 4KB pages of type EfiReservedMemoryType at a specified alignment.\r | |
302 | \r | |
303 | Allocates the number of 4KB pages specified by Pages of type EfiReservedMemoryType with an\r | |
304 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
305 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
306 | request, then NULL is returned.\r | |
307 | \r | |
308 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
309 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r | |
310 | \r | |
311 | @param Pages The number of 4 KB pages to allocate.\r | |
312 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
313 | If Alignment is zero, then byte alignment is used.\r | |
314 | \r | |
315 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
316 | \r | |
317 | **/\r | |
318 | VOID *\r | |
319 | EFIAPI\r | |
320 | AllocateAlignedReservedPages (\r | |
321 | IN UINTN Pages,\r | |
322 | IN UINTN Alignment\r | |
323 | )\r | |
324 | {\r | |
325 | return NULL;\r | |
326 | }\r | |
327 | \r | |
328 | /**\r | |
329 | Frees one or more 4KB pages that were previously allocated with one of the aligned page\r | |
330 | allocation functions in the Memory Allocation Library.\r | |
331 | \r | |
332 | Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r | |
333 | must have been allocated on a previous call to the aligned page allocation services of the Memory\r | |
334 | Allocation Library. If it is not possible to free allocated pages, then this function will\r | |
335 | perform no actions.\r | |
336 | \r | |
337 | If Buffer was not allocated with an aligned page allocation function in the Memory Allocation\r | |
338 | Library, then ASSERT().\r | |
339 | If Pages is zero, then ASSERT().\r | |
340 | \r | |
341 | @param Buffer Pointer to the buffer of pages to free.\r | |
342 | @param Pages The number of 4 KB pages to free.\r | |
343 | \r | |
344 | **/\r | |
345 | VOID\r | |
346 | EFIAPI\r | |
347 | FreeAlignedPages (\r | |
348 | IN VOID *Buffer,\r | |
349 | IN UINTN Pages\r | |
350 | )\r | |
351 | {\r | |
352 | EFI_STATUS Status;\r | |
353 | \r | |
354 | ASSERT (Pages != 0);\r | |
355 | Status = gMmst->MmFreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);\r | |
356 | ASSERT_EFI_ERROR (Status);\r | |
357 | }\r | |
358 | \r | |
359 | /**\r | |
360 | Allocates a buffer of a certain pool type.\r | |
361 | \r | |
362 | Allocates the number bytes specified by AllocationSize of a certain pool type and returns a\r | |
363 | pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
364 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
365 | \r | |
366 | @param MemoryType The type of memory to allocate.\r | |
367 | @param AllocationSize The number of bytes to allocate.\r | |
368 | \r | |
369 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
370 | \r | |
371 | **/\r | |
372 | VOID *\r | |
373 | InternalAllocatePool (\r | |
374 | IN EFI_MEMORY_TYPE MemoryType,\r | |
375 | IN UINTN AllocationSize\r | |
376 | )\r | |
377 | {\r | |
378 | EFI_STATUS Status;\r | |
379 | VOID *Memory;\r | |
380 | \r | |
381 | Memory = NULL;\r | |
382 | \r | |
383 | Status = gMmst->MmAllocatePool (MemoryType, AllocationSize, &Memory);\r | |
384 | if (EFI_ERROR (Status)) {\r | |
385 | Memory = NULL;\r | |
386 | }\r | |
387 | return Memory;\r | |
388 | }\r | |
389 | \r | |
390 | /**\r | |
391 | Allocates a buffer of type EfiBootServicesData.\r | |
392 | \r | |
393 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData and returns a\r | |
394 | pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
395 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
396 | \r | |
397 | @param AllocationSize The number of bytes to allocate.\r | |
398 | \r | |
399 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
400 | \r | |
401 | **/\r | |
402 | VOID *\r | |
403 | EFIAPI\r | |
404 | AllocatePool (\r | |
405 | IN UINTN AllocationSize\r | |
406 | )\r | |
407 | {\r | |
408 | return InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);\r | |
409 | }\r | |
410 | \r | |
411 | /**\r | |
412 | Allocates a buffer of type EfiRuntimeServicesData.\r | |
413 | \r | |
414 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData and returns\r | |
415 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
416 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
417 | \r | |
418 | @param AllocationSize The number of bytes to allocate.\r | |
419 | \r | |
420 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
421 | \r | |
422 | **/\r | |
423 | VOID *\r | |
424 | EFIAPI\r | |
425 | AllocateRuntimePool (\r | |
426 | IN UINTN AllocationSize\r | |
427 | )\r | |
428 | {\r | |
429 | return InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);\r | |
430 | }\r | |
431 | \r | |
432 | /**\r | |
433 | Allocates a buffer of type EfiReservedMemoryType.\r | |
434 | \r | |
435 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType and returns\r | |
436 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
437 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
438 | \r | |
439 | @param AllocationSize The number of bytes to allocate.\r | |
440 | \r | |
441 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
442 | \r | |
443 | **/\r | |
444 | VOID *\r | |
445 | EFIAPI\r | |
446 | AllocateReservedPool (\r | |
447 | IN UINTN AllocationSize\r | |
448 | )\r | |
449 | {\r | |
450 | return NULL;\r | |
451 | }\r | |
452 | \r | |
453 | /**\r | |
454 | Allocates and zeros a buffer of a certain pool type.\r | |
455 | \r | |
456 | Allocates the number bytes specified by AllocationSize of a certain pool type, clears the buffer\r | |
457 | with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid\r | |
458 | buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request,\r | |
459 | then NULL is returned.\r | |
460 | \r | |
461 | @param PoolType The type of memory to allocate.\r | |
462 | @param AllocationSize The number of bytes to allocate and zero.\r | |
463 | \r | |
464 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
465 | \r | |
466 | **/\r | |
467 | VOID *\r | |
468 | InternalAllocateZeroPool (\r | |
469 | IN EFI_MEMORY_TYPE PoolType,\r | |
470 | IN UINTN AllocationSize\r | |
471 | )\r | |
472 | {\r | |
473 | VOID *Memory;\r | |
474 | \r | |
475 | Memory = InternalAllocatePool (PoolType, AllocationSize);\r | |
476 | if (Memory != NULL) {\r | |
477 | Memory = ZeroMem (Memory, AllocationSize);\r | |
478 | }\r | |
479 | return Memory;\r | |
480 | }\r | |
481 | \r | |
482 | /**\r | |
483 | Allocates and zeros a buffer of type EfiBootServicesData.\r | |
484 | \r | |
485 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, clears the\r | |
486 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
487 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
488 | request, then NULL is returned.\r | |
489 | \r | |
490 | @param AllocationSize The number of bytes to allocate and zero.\r | |
491 | \r | |
492 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
493 | \r | |
494 | **/\r | |
495 | VOID *\r | |
496 | EFIAPI\r | |
497 | AllocateZeroPool (\r | |
498 | IN UINTN AllocationSize\r | |
499 | )\r | |
500 | {\r | |
501 | return InternalAllocateZeroPool (EfiRuntimeServicesData, AllocationSize);\r | |
502 | }\r | |
503 | \r | |
504 | /**\r | |
505 | Allocates and zeros a buffer of type EfiRuntimeServicesData.\r | |
506 | \r | |
507 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, clears the\r | |
508 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
509 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
510 | request, then NULL is returned.\r | |
511 | \r | |
512 | @param AllocationSize The number of bytes to allocate and zero.\r | |
513 | \r | |
514 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
515 | \r | |
516 | **/\r | |
517 | VOID *\r | |
518 | EFIAPI\r | |
519 | AllocateRuntimeZeroPool (\r | |
520 | IN UINTN AllocationSize\r | |
521 | )\r | |
522 | {\r | |
523 | return InternalAllocateZeroPool (EfiRuntimeServicesData, AllocationSize);\r | |
524 | }\r | |
525 | \r | |
526 | /**\r | |
527 | Allocates and zeros a buffer of type EfiReservedMemoryType.\r | |
528 | \r | |
529 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, clears the\r | |
530 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
531 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
532 | request, then NULL is returned.\r | |
533 | \r | |
534 | @param AllocationSize The number of bytes to allocate and zero.\r | |
535 | \r | |
536 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
537 | \r | |
538 | **/\r | |
539 | VOID *\r | |
540 | EFIAPI\r | |
541 | AllocateReservedZeroPool (\r | |
542 | IN UINTN AllocationSize\r | |
543 | )\r | |
544 | {\r | |
545 | return NULL;\r | |
546 | }\r | |
547 | \r | |
548 | /**\r | |
549 | Copies a buffer to an allocated buffer of a certain pool type.\r | |
550 | \r | |
551 | Allocates the number bytes specified by AllocationSize of a certain pool type, copies\r | |
552 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
553 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
554 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
555 | If Buffer is NULL, then ASSERT().\r | |
556 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
557 | \r | |
558 | @param PoolType The type of pool to allocate.\r | |
559 | @param AllocationSize The number of bytes to allocate and zero.\r | |
560 | @param Buffer The buffer to copy to the allocated buffer.\r | |
561 | \r | |
562 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
563 | \r | |
564 | **/\r | |
565 | VOID *\r | |
566 | InternalAllocateCopyPool (\r | |
567 | IN EFI_MEMORY_TYPE PoolType,\r | |
568 | IN UINTN AllocationSize,\r | |
569 | IN CONST VOID *Buffer\r | |
570 | )\r | |
571 | {\r | |
572 | VOID *Memory;\r | |
573 | \r | |
574 | ASSERT (Buffer != NULL);\r | |
575 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r | |
576 | \r | |
577 | Memory = InternalAllocatePool (PoolType, AllocationSize);\r | |
578 | if (Memory != NULL) {\r | |
579 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r | |
580 | }\r | |
581 | return Memory;\r | |
582 | }\r | |
583 | \r | |
584 | /**\r | |
585 | Copies a buffer to an allocated buffer of type EfiBootServicesData.\r | |
586 | \r | |
587 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, copies\r | |
588 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
589 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
590 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
591 | \r | |
592 | If Buffer is NULL, then ASSERT().\r | |
593 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
594 | \r | |
595 | @param AllocationSize The number of bytes to allocate and zero.\r | |
596 | @param Buffer The buffer to copy to the allocated buffer.\r | |
597 | \r | |
598 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
599 | \r | |
600 | **/\r | |
601 | VOID *\r | |
602 | EFIAPI\r | |
603 | AllocateCopyPool (\r | |
604 | IN UINTN AllocationSize,\r | |
605 | IN CONST VOID *Buffer\r | |
606 | )\r | |
607 | {\r | |
608 | return InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer);\r | |
609 | }\r | |
610 | \r | |
611 | /**\r | |
612 | Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.\r | |
613 | \r | |
614 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, copies\r | |
615 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
616 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
617 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
618 | \r | |
619 | If Buffer is NULL, then ASSERT().\r | |
620 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
621 | \r | |
622 | @param AllocationSize The number of bytes to allocate and zero.\r | |
623 | @param Buffer The buffer to copy to the allocated buffer.\r | |
624 | \r | |
625 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
626 | \r | |
627 | **/\r | |
628 | VOID *\r | |
629 | EFIAPI\r | |
630 | AllocateRuntimeCopyPool (\r | |
631 | IN UINTN AllocationSize,\r | |
632 | IN CONST VOID *Buffer\r | |
633 | )\r | |
634 | {\r | |
635 | return InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer);\r | |
636 | }\r | |
637 | \r | |
638 | /**\r | |
639 | Copies a buffer to an allocated buffer of type EfiReservedMemoryType.\r | |
640 | \r | |
641 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, copies\r | |
642 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
643 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
644 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
645 | \r | |
646 | If Buffer is NULL, then ASSERT().\r | |
647 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r | |
648 | \r | |
649 | @param AllocationSize The number of bytes to allocate and zero.\r | |
650 | @param Buffer The buffer to copy to the allocated buffer.\r | |
651 | \r | |
652 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
653 | \r | |
654 | **/\r | |
655 | VOID *\r | |
656 | EFIAPI\r | |
657 | AllocateReservedCopyPool (\r | |
658 | IN UINTN AllocationSize,\r | |
659 | IN CONST VOID *Buffer\r | |
660 | )\r | |
661 | {\r | |
662 | return NULL;\r | |
663 | }\r | |
664 | \r | |
665 | /**\r | |
666 | Reallocates a buffer of a specified memory type.\r | |
667 | \r | |
668 | Allocates and zeros the number bytes specified by NewSize from memory of the type\r | |
669 | specified by PoolType. If OldBuffer is not NULL, then the smaller of OldSize and\r | |
670 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r | |
671 | OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r | |
672 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r | |
673 | enough memory remaining to satisfy the request, then NULL is returned.\r | |
674 | \r | |
675 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r | |
676 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
677 | \r | |
678 | @param PoolType The type of pool to allocate.\r | |
679 | @param OldSize The size, in bytes, of OldBuffer.\r | |
680 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
681 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r | |
682 | parameter that may be NULL.\r | |
683 | \r | |
684 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
685 | \r | |
686 | **/\r | |
687 | VOID *\r | |
688 | InternalReallocatePool (\r | |
689 | IN EFI_MEMORY_TYPE PoolType,\r | |
690 | IN UINTN OldSize,\r | |
691 | IN UINTN NewSize,\r | |
692 | IN VOID *OldBuffer OPTIONAL\r | |
693 | )\r | |
694 | {\r | |
695 | VOID *NewBuffer;\r | |
696 | \r | |
697 | NewBuffer = InternalAllocateZeroPool (PoolType, NewSize);\r | |
698 | if (NewBuffer != NULL && OldBuffer != NULL) {\r | |
699 | CopyMem (NewBuffer, OldBuffer, MIN (OldSize, NewSize));\r | |
700 | FreePool (OldBuffer);\r | |
701 | }\r | |
702 | return NewBuffer;\r | |
703 | }\r | |
704 | \r | |
705 | /**\r | |
706 | Reallocates a buffer of type EfiBootServicesData.\r | |
707 | \r | |
708 | Allocates and zeros the number bytes specified by NewSize from memory of type\r | |
709 | EfiBootServicesData. If OldBuffer is not NULL, then the smaller of OldSize and\r | |
710 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r | |
711 | OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r | |
712 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r | |
713 | enough memory remaining to satisfy the request, then NULL is returned.\r | |
714 | \r | |
715 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r | |
716 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
717 | \r | |
718 | @param OldSize The size, in bytes, of OldBuffer.\r | |
719 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
720 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r | |
721 | parameter that may be NULL.\r | |
722 | \r | |
723 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
724 | \r | |
725 | **/\r | |
726 | VOID *\r | |
727 | EFIAPI\r | |
728 | ReallocatePool (\r | |
729 | IN UINTN OldSize,\r | |
730 | IN UINTN NewSize,\r | |
731 | IN VOID *OldBuffer OPTIONAL\r | |
732 | )\r | |
733 | {\r | |
734 | return InternalReallocatePool (EfiRuntimeServicesData, OldSize, NewSize, OldBuffer);\r | |
735 | }\r | |
736 | \r | |
737 | /**\r | |
738 | Reallocates a buffer of type EfiRuntimeServicesData.\r | |
739 | \r | |
740 | Allocates and zeros the number bytes specified by NewSize from memory of type\r | |
741 | EfiRuntimeServicesData. If OldBuffer is not NULL, then the smaller of OldSize and\r | |
742 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r | |
743 | OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r | |
744 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r | |
745 | enough memory remaining to satisfy the request, then NULL is returned.\r | |
746 | \r | |
747 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r | |
748 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
749 | \r | |
750 | @param OldSize The size, in bytes, of OldBuffer.\r | |
751 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
752 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r | |
753 | parameter that may be NULL.\r | |
754 | \r | |
755 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
756 | \r | |
757 | **/\r | |
758 | VOID *\r | |
759 | EFIAPI\r | |
760 | ReallocateRuntimePool (\r | |
761 | IN UINTN OldSize,\r | |
762 | IN UINTN NewSize,\r | |
763 | IN VOID *OldBuffer OPTIONAL\r | |
764 | )\r | |
765 | {\r | |
766 | return InternalReallocatePool (EfiRuntimeServicesData, OldSize, NewSize, OldBuffer);\r | |
767 | }\r | |
768 | \r | |
769 | /**\r | |
770 | Reallocates a buffer of type EfiReservedMemoryType.\r | |
771 | \r | |
772 | Allocates and zeros the number bytes specified by NewSize from memory of type\r | |
773 | EfiReservedMemoryType. If OldBuffer is not NULL, then the smaller of OldSize and\r | |
774 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r | |
775 | OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r | |
776 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r | |
777 | enough memory remaining to satisfy the request, then NULL is returned.\r | |
778 | \r | |
779 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r | |
780 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
781 | \r | |
782 | @param OldSize The size, in bytes, of OldBuffer.\r | |
783 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
784 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r | |
785 | parameter that may be NULL.\r | |
786 | \r | |
787 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
788 | \r | |
789 | **/\r | |
790 | VOID *\r | |
791 | EFIAPI\r | |
792 | ReallocateReservedPool (\r | |
793 | IN UINTN OldSize,\r | |
794 | IN UINTN NewSize,\r | |
795 | IN VOID *OldBuffer OPTIONAL\r | |
796 | )\r | |
797 | {\r | |
798 | return NULL;\r | |
799 | }\r | |
800 | \r | |
801 | /**\r | |
802 | Frees a buffer that was previously allocated with one of the pool allocation functions in the\r | |
803 | Memory Allocation Library.\r | |
804 | \r | |
805 | Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the\r | |
806 | pool allocation services of the Memory Allocation Library. If it is not possible to free pool\r | |
807 | resources, then this function will perform no actions.\r | |
808 | \r | |
809 | If Buffer was not allocated with a pool allocation function in the Memory Allocation Library,\r | |
810 | then ASSERT().\r | |
811 | \r | |
812 | @param Buffer Pointer to the buffer to free.\r | |
813 | \r | |
814 | **/\r | |
815 | VOID\r | |
816 | EFIAPI\r | |
817 | FreePool (\r | |
818 | IN VOID *Buffer\r | |
819 | )\r | |
820 | {\r | |
821 | EFI_STATUS Status;\r | |
822 | \r | |
823 | Status = gMmst->MmFreePool (Buffer);\r | |
824 | ASSERT_EFI_ERROR (Status);\r | |
825 | }\r | |
826 | \r | |
827 | /**\r | |
828 | The constructor function calls MmInitializeMemoryServices to initialize\r | |
829 | memory in MMRAM and caches EFI_MM_SYSTEM_TABLE pointer.\r | |
830 | \r | |
831 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
832 | @param SystemTable A pointer to the Management mode System Table.\r | |
833 | \r | |
834 | @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r | |
835 | \r | |
836 | **/\r | |
837 | EFI_STATUS\r | |
838 | EFIAPI\r | |
839 | MemoryAllocationLibConstructor (\r | |
840 | IN EFI_HANDLE ImageHandle,\r | |
841 | IN EFI_MM_SYSTEM_TABLE *MmSystemTable\r | |
842 | )\r | |
843 | {\r | |
844 | MM_CORE_PRIVATE_DATA *MmCorePrivate;\r | |
845 | EFI_HOB_GUID_TYPE *GuidHob;\r | |
846 | MM_CORE_DATA_HOB_DATA *DataInHob;\r | |
847 | VOID *HobStart;\r | |
848 | EFI_MMRAM_HOB_DESCRIPTOR_BLOCK *MmramRangesHobData;\r | |
849 | EFI_MMRAM_DESCRIPTOR *MmramRanges;\r | |
850 | UINT32 MmramRangeCount;\r | |
851 | EFI_HOB_GUID_TYPE *MmramRangesHob;\r | |
852 | \r | |
853 | HobStart = GetHobList ();\r | |
854 | DEBUG ((DEBUG_INFO, "StandaloneMmCoreMemoryAllocationLibConstructor - 0x%x\n", HobStart));\r | |
855 | \r | |
856 | //\r | |
857 | // Extract MM Core Private context from the Hob. If absent search for\r | |
858 | // a Hob containing the MMRAM ranges\r | |
859 | //\r | |
860 | GuidHob = GetNextGuidHob (&gMmCoreDataHobGuid, HobStart);\r | |
861 | if (GuidHob == NULL) {\r | |
862 | MmramRangesHob = GetNextGuidHob (&gEfiMmPeiMmramMemoryReserveGuid, HobStart);\r | |
863 | if (MmramRangesHob == NULL) {\r | |
864 | return EFI_UNSUPPORTED;\r | |
865 | }\r | |
866 | \r | |
867 | MmramRangesHobData = GET_GUID_HOB_DATA (MmramRangesHob);\r | |
868 | if (MmramRangesHobData == NULL) {\r | |
869 | return EFI_UNSUPPORTED;\r | |
870 | }\r | |
871 | \r | |
872 | MmramRanges = MmramRangesHobData->Descriptor;\r | |
873 | if (MmramRanges == NULL) {\r | |
874 | return EFI_UNSUPPORTED;\r | |
875 | }\r | |
876 | \r | |
877 | MmramRangeCount = MmramRangesHobData->NumberOfMmReservedRegions;\r | |
878 | if (MmramRanges == NULL) {\r | |
879 | return EFI_UNSUPPORTED;\r | |
880 | }\r | |
881 | \r | |
882 | } else {\r | |
883 | DataInHob = GET_GUID_HOB_DATA (GuidHob);\r | |
884 | MmCorePrivate = (MM_CORE_PRIVATE_DATA *)(UINTN)DataInHob->Address;\r | |
885 | MmramRanges = (EFI_MMRAM_DESCRIPTOR *)(UINTN)MmCorePrivate->MmramRanges;\r | |
886 | MmramRangeCount = MmCorePrivate->MmramRangeCount;\r | |
887 | }\r | |
888 | \r | |
889 | {\r | |
890 | UINTN Index;\r | |
891 | \r | |
892 | DEBUG ((DEBUG_INFO, "MmramRangeCount - 0x%x\n", MmramRangeCount));\r | |
893 | for (Index = 0; Index < MmramRangeCount; Index++) {\r | |
894 | DEBUG ((DEBUG_INFO, "MmramRanges[%d]: 0x%016lx - 0x%016lx\n",\r | |
895 | Index, MmramRanges[Index].CpuStart, MmramRanges[Index].PhysicalSize));\r | |
896 | }\r | |
897 | }\r | |
898 | \r | |
899 | //\r | |
900 | // Initialize memory service using free MMRAM\r | |
901 | //\r | |
902 | DEBUG ((DEBUG_INFO, "MmInitializeMemoryServices\n"));\r | |
903 | MmInitializeMemoryServices ((UINTN)MmramRangeCount, (VOID *)(UINTN)MmramRanges);\r | |
904 | \r | |
905 | // Initialize MM Services Table\r | |
906 | gMmst = MmSystemTable;\r | |
907 | return EFI_SUCCESS;\r | |
908 | }\r |