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713b7781 | 1 | /** @file\r |
cdad7675 SZ |
2 | Support routines for memory allocation routines based on SMM Core internal functions,\r |
3 | with memory profile support.\r | |
2d28f3b7 QS |
4 | \r |
5 | The PI System Management Mode Core Interface Specification only allows the use\r | |
6 | of EfiRuntimeServicesCode and EfiRuntimeServicesData memory types for memory \r | |
7 | allocations as the SMRAM space should be reserved after BDS phase. The functions \r | |
8 | in the Memory Allocation Library use EfiBootServicesData as the default memory \r | |
9 | allocation type. For this SMM specific instance of the Memory Allocation Library, \r | |
10 | EfiRuntimeServicesData is used as the default memory type for all allocations. \r | |
11 | In addition, allocation for the Reserved memory types are not supported and will \r | |
12 | always return NULL.\r | |
713b7781 | 13 | \r |
16f69227 | 14 | Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>\r |
cd5ebaa0 | 15 | This program and the accompanying materials \r |
713b7781 | 16 | are licensed and made available under the terms and conditions of the BSD License \r |
17 | which accompanies this distribution. The full text of the license may be found at \r | |
18 | http://opensource.org/licenses/bsd-license.php \r | |
19 | \r | |
20 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
21 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
22 | \r | |
23 | **/\r | |
24 | \r | |
25 | #include <PiSmm.h>\r | |
26 | \r | |
27 | #include <Library/MemoryAllocationLib.h>\r | |
34401578 | 28 | #include <Library/UefiBootServicesTableLib.h>\r |
713b7781 | 29 | #include <Library/BaseMemoryLib.h>\r |
30 | #include <Library/DebugLib.h>\r | |
31 | #include "PiSmmCoreMemoryAllocationServices.h"\r | |
32 | \r | |
cdad7675 SZ |
33 | #include <Library/MemoryProfileLib.h>\r |
34 | \r | |
f3b6e048 SZ |
35 | EFI_SMRAM_DESCRIPTOR *mSmmCoreMemoryAllocLibSmramRanges = NULL;\r |
36 | UINTN mSmmCoreMemoryAllocLibSmramRangeCount = 0;\r | |
34401578 LG |
37 | \r |
38 | /**\r | |
39 | Check whether the start address of buffer is within any of the SMRAM ranges.\r | |
40 | \r | |
41 | @param[in] Buffer The pointer to the buffer to be checked.\r | |
42 | \r | |
3b28e744 | 43 | @retval TRUE The buffer is in SMRAM ranges.\r |
34401578 LG |
44 | @retval FALSE The buffer is out of SMRAM ranges.\r |
45 | **/\r | |
46 | BOOLEAN\r | |
47 | EFIAPI\r | |
48 | BufferInSmram (\r | |
49 | IN VOID *Buffer\r | |
50 | )\r | |
51 | {\r | |
52 | UINTN Index;\r | |
53 | \r | |
f3b6e048 SZ |
54 | for (Index = 0; Index < mSmmCoreMemoryAllocLibSmramRangeCount; Index ++) {\r |
55 | if (((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer >= mSmmCoreMemoryAllocLibSmramRanges[Index].CpuStart) && \r | |
56 | ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer < (mSmmCoreMemoryAllocLibSmramRanges[Index].CpuStart + mSmmCoreMemoryAllocLibSmramRanges[Index].PhysicalSize))) {\r | |
34401578 LG |
57 | return TRUE;\r |
58 | }\r | |
59 | }\r | |
60 | \r | |
61 | return FALSE;\r | |
62 | }\r | |
63 | \r | |
713b7781 | 64 | /**\r |
65 | Allocates one or more 4KB pages of a certain memory type.\r | |
66 | \r | |
67 | Allocates the number of 4KB pages of a certain memory type and returns a pointer to the allocated\r | |
68 | buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL is returned.\r | |
69 | If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
70 | \r | |
71 | @param MemoryType The type of memory to allocate.\r | |
72 | @param Pages The number of 4 KB pages to allocate.\r | |
73 | \r | |
74 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
75 | \r | |
76 | **/\r | |
77 | VOID *\r | |
78 | InternalAllocatePages (\r | |
79 | IN EFI_MEMORY_TYPE MemoryType, \r | |
80 | IN UINTN Pages\r | |
81 | )\r | |
82 | {\r | |
83 | EFI_STATUS Status;\r | |
84 | EFI_PHYSICAL_ADDRESS Memory; \r | |
85 | \r | |
86 | if (Pages == 0) {\r | |
87 | return NULL;\r | |
88 | }\r | |
89 | \r | |
90 | Status = SmmAllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);\r | |
91 | if (EFI_ERROR (Status)) {\r | |
92 | return NULL;\r | |
93 | }\r | |
94 | return (VOID *) (UINTN) Memory;\r | |
95 | }\r | |
96 | \r | |
97 | /**\r | |
2d28f3b7 | 98 | Allocates one or more 4KB pages of type EfiRuntimeServicesData.\r |
713b7781 | 99 | \r |
2d28f3b7 | 100 | Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the\r |
713b7781 | 101 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r |
102 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r | |
103 | returned.\r | |
104 | \r | |
105 | @param Pages The number of 4 KB pages to allocate.\r | |
106 | \r | |
107 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
108 | \r | |
109 | **/\r | |
110 | VOID *\r | |
111 | EFIAPI\r | |
112 | AllocatePages (\r | |
113 | IN UINTN Pages\r | |
114 | )\r | |
115 | {\r | |
cdad7675 SZ |
116 | VOID *Buffer;\r |
117 | \r | |
118 | Buffer = InternalAllocatePages (EfiRuntimeServicesData, Pages);\r | |
119 | if (Buffer != NULL) {\r | |
120 | MemoryProfileLibRecord (\r | |
121 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
122 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_PAGES,\r | |
123 | EfiRuntimeServicesData,\r | |
124 | Buffer,\r | |
125 | EFI_PAGES_TO_SIZE(Pages),\r | |
126 | NULL\r | |
127 | );\r | |
128 | }\r | |
129 | return Buffer;\r | |
713b7781 | 130 | }\r |
131 | \r | |
132 | /**\r | |
133 | Allocates one or more 4KB pages of type EfiRuntimeServicesData.\r | |
134 | \r | |
135 | Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the\r | |
136 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r | |
137 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r | |
138 | returned.\r | |
139 | \r | |
140 | @param Pages The number of 4 KB pages to allocate.\r | |
141 | \r | |
142 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
143 | \r | |
144 | **/\r | |
145 | VOID *\r | |
146 | EFIAPI\r | |
147 | AllocateRuntimePages (\r | |
148 | IN UINTN Pages\r | |
149 | )\r | |
150 | {\r | |
cdad7675 SZ |
151 | VOID *Buffer;\r |
152 | \r | |
153 | Buffer = InternalAllocatePages (EfiRuntimeServicesData, Pages);\r | |
154 | if (Buffer != NULL) {\r | |
155 | MemoryProfileLibRecord (\r | |
156 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
157 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RUNTIME_PAGES,\r | |
158 | EfiRuntimeServicesData,\r | |
159 | Buffer,\r | |
160 | EFI_PAGES_TO_SIZE(Pages),\r | |
161 | NULL\r | |
162 | );\r | |
163 | }\r | |
164 | return Buffer;\r | |
713b7781 | 165 | }\r |
166 | \r | |
167 | /**\r | |
168 | Allocates one or more 4KB pages of type EfiReservedMemoryType.\r | |
169 | \r | |
170 | Allocates the number of 4KB pages of type EfiReservedMemoryType and returns a pointer to the\r | |
171 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r | |
172 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r | |
173 | returned.\r | |
174 | \r | |
175 | @param Pages The number of 4 KB pages to allocate.\r | |
176 | \r | |
177 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
178 | \r | |
179 | **/\r | |
180 | VOID *\r | |
181 | EFIAPI\r | |
182 | AllocateReservedPages (\r | |
183 | IN UINTN Pages\r | |
184 | )\r | |
185 | {\r | |
186 | return NULL;\r | |
187 | }\r | |
188 | \r | |
189 | /**\r | |
190 | Frees one or more 4KB pages that were previously allocated with one of the page allocation\r | |
191 | functions in the Memory Allocation Library.\r | |
192 | \r | |
193 | Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r | |
194 | must have been allocated on a previous call to the page allocation services of the Memory\r | |
195 | Allocation Library. If it is not possible to free allocated pages, then this function will\r | |
196 | perform no actions.\r | |
197 | \r | |
198 | If Buffer was not allocated with a page allocation function in the Memory Allocation Library,\r | |
199 | then ASSERT().\r | |
200 | If Pages is zero, then ASSERT().\r | |
201 | \r | |
202 | @param Buffer Pointer to the buffer of pages to free.\r | |
203 | @param Pages The number of 4 KB pages to free.\r | |
204 | \r | |
205 | **/\r | |
206 | VOID\r | |
207 | EFIAPI\r | |
208 | FreePages (\r | |
209 | IN VOID *Buffer,\r | |
210 | IN UINTN Pages\r | |
211 | )\r | |
212 | {\r | |
213 | EFI_STATUS Status;\r | |
214 | \r | |
215 | ASSERT (Pages != 0);\r | |
34401578 LG |
216 | if (BufferInSmram (Buffer)) {\r |
217 | //\r | |
218 | // When Buffer is in SMRAM range, it should be allocated by SmmAllocatePages() service.\r | |
219 | // So, SmmFreePages() service is used to free it.\r | |
220 | //\r | |
221 | Status = SmmFreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);\r | |
222 | } else {\r | |
223 | //\r | |
224 | // When Buffer is out of SMRAM range, it should be allocated by gBS->AllocatePages() service.\r | |
225 | // So, gBS->FreePages() service is used to free it.\r | |
226 | //\r | |
227 | Status = gBS->FreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);\r | |
228 | }\r | |
713b7781 | 229 | ASSERT_EFI_ERROR (Status);\r |
230 | }\r | |
231 | \r | |
232 | /**\r | |
233 | Allocates one or more 4KB pages of a certain memory type at a specified alignment.\r | |
234 | \r | |
235 | Allocates the number of 4KB pages specified by Pages of a certain memory type with an alignment\r | |
236 | specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is returned.\r | |
237 | If there is not enough memory at the specified alignment remaining to satisfy the request, then\r | |
238 | NULL is returned.\r | |
239 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
91403ce9 | 240 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r |
713b7781 | 241 | \r |
242 | @param MemoryType The type of memory to allocate.\r | |
243 | @param Pages The number of 4 KB pages to allocate.\r | |
244 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
245 | If Alignment is zero, then byte alignment is used.\r | |
246 | \r | |
247 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
248 | \r | |
249 | **/\r | |
250 | VOID *\r | |
251 | InternalAllocateAlignedPages (\r | |
252 | IN EFI_MEMORY_TYPE MemoryType, \r | |
253 | IN UINTN Pages,\r | |
254 | IN UINTN Alignment\r | |
255 | )\r | |
256 | {\r | |
257 | EFI_STATUS Status;\r | |
258 | EFI_PHYSICAL_ADDRESS Memory;\r | |
259 | UINTN AlignedMemory;\r | |
260 | UINTN AlignmentMask;\r | |
261 | UINTN UnalignedPages;\r | |
262 | UINTN RealPages;\r | |
263 | \r | |
264 | //\r | |
265 | // Alignment must be a power of two or zero.\r | |
266 | //\r | |
267 | ASSERT ((Alignment & (Alignment - 1)) == 0);\r | |
268 | \r | |
269 | if (Pages == 0) {\r | |
270 | return NULL;\r | |
271 | }\r | |
272 | if (Alignment > EFI_PAGE_SIZE) {\r | |
273 | //\r | |
e50a226b | 274 | // Calculate the total number of pages since alignment is larger than page size.\r |
713b7781 | 275 | //\r |
276 | AlignmentMask = Alignment - 1;\r | |
277 | RealPages = Pages + EFI_SIZE_TO_PAGES (Alignment);\r | |
278 | //\r | |
279 | // Make sure that Pages plus EFI_SIZE_TO_PAGES (Alignment) does not overflow.\r | |
280 | //\r | |
281 | ASSERT (RealPages > Pages);\r | |
282 | \r | |
283 | Status = SmmAllocatePages (AllocateAnyPages, MemoryType, RealPages, &Memory);\r | |
284 | if (EFI_ERROR (Status)) {\r | |
285 | return NULL;\r | |
286 | }\r | |
287 | AlignedMemory = ((UINTN) Memory + AlignmentMask) & ~AlignmentMask;\r | |
288 | UnalignedPages = EFI_SIZE_TO_PAGES (AlignedMemory - (UINTN) Memory);\r | |
289 | if (UnalignedPages > 0) {\r | |
290 | //\r | |
291 | // Free first unaligned page(s).\r | |
292 | //\r | |
293 | Status = SmmFreePages (Memory, UnalignedPages);\r | |
294 | ASSERT_EFI_ERROR (Status);\r | |
295 | }\r | |
16f69227 | 296 | Memory = AlignedMemory + EFI_PAGES_TO_SIZE (Pages);\r |
713b7781 | 297 | UnalignedPages = RealPages - Pages - UnalignedPages;\r |
298 | if (UnalignedPages > 0) {\r | |
299 | //\r | |
300 | // Free last unaligned page(s).\r | |
301 | //\r | |
302 | Status = SmmFreePages (Memory, UnalignedPages);\r | |
303 | ASSERT_EFI_ERROR (Status);\r | |
304 | }\r | |
305 | } else {\r | |
306 | //\r | |
307 | // Do not over-allocate pages in this case.\r | |
308 | //\r | |
309 | Status = SmmAllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);\r | |
310 | if (EFI_ERROR (Status)) {\r | |
311 | return NULL;\r | |
312 | }\r | |
313 | AlignedMemory = (UINTN) Memory;\r | |
314 | }\r | |
315 | return (VOID *) AlignedMemory;\r | |
316 | }\r | |
317 | \r | |
318 | /**\r | |
2d28f3b7 | 319 | Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.\r |
713b7781 | 320 | \r |
2d28f3b7 | 321 | Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData with an\r |
713b7781 | 322 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r |
323 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
324 | request, then NULL is returned.\r | |
325 | \r | |
326 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
91403ce9 | 327 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r |
713b7781 | 328 | \r |
329 | @param Pages The number of 4 KB pages to allocate.\r | |
330 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
331 | If Alignment is zero, then byte alignment is used.\r | |
332 | \r | |
333 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
334 | \r | |
335 | **/\r | |
336 | VOID *\r | |
337 | EFIAPI\r | |
338 | AllocateAlignedPages (\r | |
339 | IN UINTN Pages,\r | |
340 | IN UINTN Alignment\r | |
341 | )\r | |
342 | {\r | |
cdad7675 SZ |
343 | VOID *Buffer;\r |
344 | \r | |
345 | Buffer = InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);\r | |
346 | if (Buffer != NULL) {\r | |
347 | MemoryProfileLibRecord (\r | |
348 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
349 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_ALIGNED_PAGES,\r | |
350 | EfiRuntimeServicesData,\r | |
351 | Buffer,\r | |
352 | EFI_PAGES_TO_SIZE(Pages),\r | |
353 | NULL\r | |
354 | );\r | |
355 | }\r | |
356 | return Buffer;\r | |
713b7781 | 357 | }\r |
358 | \r | |
359 | /**\r | |
360 | Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.\r | |
361 | \r | |
362 | Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData with an\r | |
363 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
364 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
365 | request, then NULL is returned.\r | |
366 | \r | |
367 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
91403ce9 | 368 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r |
713b7781 | 369 | \r |
370 | @param Pages The number of 4 KB pages to allocate.\r | |
371 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
372 | If Alignment is zero, then byte alignment is used.\r | |
373 | \r | |
374 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
375 | \r | |
376 | **/\r | |
377 | VOID *\r | |
378 | EFIAPI\r | |
379 | AllocateAlignedRuntimePages (\r | |
380 | IN UINTN Pages,\r | |
381 | IN UINTN Alignment\r | |
382 | )\r | |
383 | {\r | |
cdad7675 SZ |
384 | VOID *Buffer;\r |
385 | \r | |
386 | Buffer = InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);\r | |
387 | if (Buffer != NULL) {\r | |
388 | MemoryProfileLibRecord (\r | |
389 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
390 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_ALIGNED_RUNTIME_PAGES,\r | |
391 | EfiRuntimeServicesData,\r | |
392 | Buffer,\r | |
393 | EFI_PAGES_TO_SIZE(Pages),\r | |
394 | NULL\r | |
395 | );\r | |
396 | }\r | |
397 | return Buffer;\r | |
713b7781 | 398 | }\r |
399 | \r | |
400 | /**\r | |
401 | Allocates one or more 4KB pages of type EfiReservedMemoryType at a specified alignment.\r | |
402 | \r | |
403 | Allocates the number of 4KB pages specified by Pages of type EfiReservedMemoryType with an\r | |
404 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
405 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
406 | request, then NULL is returned.\r | |
407 | \r | |
408 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r | |
91403ce9 | 409 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r |
713b7781 | 410 | \r |
411 | @param Pages The number of 4 KB pages to allocate.\r | |
412 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
413 | If Alignment is zero, then byte alignment is used.\r | |
414 | \r | |
415 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
416 | \r | |
417 | **/\r | |
418 | VOID *\r | |
419 | EFIAPI\r | |
420 | AllocateAlignedReservedPages (\r | |
421 | IN UINTN Pages,\r | |
422 | IN UINTN Alignment\r | |
423 | )\r | |
424 | {\r | |
425 | return NULL;\r | |
426 | }\r | |
427 | \r | |
428 | /**\r | |
429 | Frees one or more 4KB pages that were previously allocated with one of the aligned page\r | |
430 | allocation functions in the Memory Allocation Library.\r | |
431 | \r | |
432 | Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r | |
433 | must have been allocated on a previous call to the aligned page allocation services of the Memory\r | |
434 | Allocation Library. If it is not possible to free allocated pages, then this function will \r | |
435 | perform no actions.\r | |
436 | \r | |
437 | If Buffer was not allocated with an aligned page allocation function in the Memory Allocation\r | |
438 | Library, then ASSERT().\r | |
439 | If Pages is zero, then ASSERT().\r | |
440 | \r | |
441 | @param Buffer Pointer to the buffer of pages to free.\r | |
442 | @param Pages The number of 4 KB pages to free.\r | |
443 | \r | |
444 | **/\r | |
445 | VOID\r | |
446 | EFIAPI\r | |
447 | FreeAlignedPages (\r | |
448 | IN VOID *Buffer,\r | |
449 | IN UINTN Pages\r | |
450 | )\r | |
451 | {\r | |
452 | EFI_STATUS Status;\r | |
453 | \r | |
454 | ASSERT (Pages != 0);\r | |
34401578 LG |
455 | if (BufferInSmram (Buffer)) {\r |
456 | //\r | |
457 | // When Buffer is in SMRAM range, it should be allocated by SmmAllocatePages() service.\r | |
458 | // So, SmmFreePages() service is used to free it.\r | |
459 | //\r | |
460 | Status = SmmFreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);\r | |
461 | } else {\r | |
462 | //\r | |
463 | // When Buffer is out of SMRAM range, it should be allocated by gBS->AllocatePages() service.\r | |
464 | // So, gBS->FreePages() service is used to free it.\r | |
465 | //\r | |
466 | Status = gBS->FreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);\r | |
467 | }\r | |
713b7781 | 468 | ASSERT_EFI_ERROR (Status);\r |
469 | }\r | |
470 | \r | |
471 | /**\r | |
472 | Allocates a buffer of a certain pool type.\r | |
473 | \r | |
474 | Allocates the number bytes specified by AllocationSize of a certain pool type and returns a\r | |
475 | pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
476 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
477 | \r | |
478 | @param MemoryType The type of memory to allocate.\r | |
479 | @param AllocationSize The number of bytes to allocate.\r | |
480 | \r | |
481 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
482 | \r | |
483 | **/\r | |
484 | VOID *\r | |
485 | InternalAllocatePool (\r | |
486 | IN EFI_MEMORY_TYPE MemoryType, \r | |
487 | IN UINTN AllocationSize\r | |
488 | )\r | |
489 | {\r | |
490 | EFI_STATUS Status;\r | |
491 | VOID *Memory;\r | |
492 | \r | |
4e1005ec ED |
493 | Memory = NULL;\r |
494 | \r | |
713b7781 | 495 | Status = SmmAllocatePool (MemoryType, AllocationSize, &Memory);\r |
496 | if (EFI_ERROR (Status)) {\r | |
497 | Memory = NULL;\r | |
498 | }\r | |
499 | return Memory;\r | |
500 | }\r | |
501 | \r | |
502 | /**\r | |
2d28f3b7 | 503 | Allocates a buffer of type EfiRuntimeServicesData.\r |
713b7781 | 504 | \r |
2d28f3b7 | 505 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData and returns a\r |
713b7781 | 506 | pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r |
507 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
508 | \r | |
509 | @param AllocationSize The number of bytes to allocate.\r | |
510 | \r | |
511 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
512 | \r | |
513 | **/\r | |
514 | VOID *\r | |
515 | EFIAPI\r | |
516 | AllocatePool (\r | |
517 | IN UINTN AllocationSize\r | |
518 | )\r | |
519 | {\r | |
cdad7675 SZ |
520 | VOID *Buffer;\r |
521 | \r | |
522 | Buffer = InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);\r | |
523 | if (Buffer != NULL) {\r | |
524 | MemoryProfileLibRecord (\r | |
525 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
526 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_POOL,\r | |
527 | EfiRuntimeServicesData,\r | |
528 | Buffer,\r | |
529 | AllocationSize,\r | |
530 | NULL\r | |
531 | );\r | |
532 | }\r | |
533 | return Buffer;\r | |
713b7781 | 534 | }\r |
535 | \r | |
536 | /**\r | |
537 | Allocates a buffer of type EfiRuntimeServicesData.\r | |
538 | \r | |
539 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData and returns\r | |
540 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
541 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
542 | \r | |
543 | @param AllocationSize The number of bytes to allocate.\r | |
544 | \r | |
545 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
546 | \r | |
547 | **/\r | |
548 | VOID *\r | |
549 | EFIAPI\r | |
550 | AllocateRuntimePool (\r | |
551 | IN UINTN AllocationSize\r | |
552 | )\r | |
553 | {\r | |
cdad7675 SZ |
554 | VOID *Buffer;\r |
555 | \r | |
556 | Buffer = InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);\r | |
557 | if (Buffer != NULL) {\r | |
558 | MemoryProfileLibRecord (\r | |
559 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
560 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RUNTIME_POOL,\r | |
561 | EfiRuntimeServicesData,\r | |
562 | Buffer,\r | |
563 | AllocationSize,\r | |
564 | NULL\r | |
565 | );\r | |
566 | }\r | |
567 | return Buffer;\r | |
713b7781 | 568 | }\r |
569 | \r | |
570 | /**\r | |
571 | Allocates a buffer of type EfiReservedMemoryType.\r | |
572 | \r | |
573 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType and returns\r | |
574 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
575 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
576 | \r | |
577 | @param AllocationSize The number of bytes to allocate.\r | |
578 | \r | |
579 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
580 | \r | |
581 | **/\r | |
582 | VOID *\r | |
583 | EFIAPI\r | |
584 | AllocateReservedPool (\r | |
585 | IN UINTN AllocationSize\r | |
586 | )\r | |
587 | {\r | |
588 | return NULL;\r | |
589 | }\r | |
590 | \r | |
591 | /**\r | |
592 | Allocates and zeros a buffer of a certain pool type.\r | |
593 | \r | |
594 | Allocates the number bytes specified by AllocationSize of a certain pool type, clears the buffer\r | |
595 | with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid\r | |
596 | buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request,\r | |
597 | then NULL is returned.\r | |
598 | \r | |
599 | @param PoolType The type of memory to allocate.\r | |
600 | @param AllocationSize The number of bytes to allocate and zero.\r | |
601 | \r | |
602 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
603 | \r | |
604 | **/\r | |
605 | VOID *\r | |
606 | InternalAllocateZeroPool (\r | |
607 | IN EFI_MEMORY_TYPE PoolType, \r | |
608 | IN UINTN AllocationSize\r | |
609 | ) \r | |
610 | {\r | |
611 | VOID *Memory;\r | |
612 | \r | |
613 | Memory = InternalAllocatePool (PoolType, AllocationSize);\r | |
614 | if (Memory != NULL) {\r | |
615 | Memory = ZeroMem (Memory, AllocationSize);\r | |
616 | }\r | |
617 | return Memory;\r | |
618 | }\r | |
619 | \r | |
620 | /**\r | |
2d28f3b7 | 621 | Allocates and zeros a buffer of type EfiRuntimeServicesData.\r |
713b7781 | 622 | \r |
2d28f3b7 | 623 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, clears the\r |
713b7781 | 624 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r |
625 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
626 | request, then NULL is returned.\r | |
627 | \r | |
628 | @param AllocationSize The number of bytes to allocate and zero.\r | |
629 | \r | |
630 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
631 | \r | |
632 | **/\r | |
633 | VOID *\r | |
634 | EFIAPI\r | |
635 | AllocateZeroPool (\r | |
636 | IN UINTN AllocationSize\r | |
637 | )\r | |
638 | {\r | |
cdad7675 SZ |
639 | VOID *Buffer;\r |
640 | \r | |
641 | Buffer = InternalAllocateZeroPool (EfiRuntimeServicesData, AllocationSize);\r | |
642 | if (Buffer != NULL) {\r | |
643 | MemoryProfileLibRecord (\r | |
644 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
645 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_ZERO_POOL,\r | |
646 | EfiRuntimeServicesData,\r | |
647 | Buffer,\r | |
648 | AllocationSize,\r | |
649 | NULL\r | |
650 | );\r | |
651 | }\r | |
652 | return Buffer;\r | |
713b7781 | 653 | }\r |
654 | \r | |
655 | /**\r | |
656 | Allocates and zeros a buffer of type EfiRuntimeServicesData.\r | |
657 | \r | |
658 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, clears the\r | |
659 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
660 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
661 | request, then NULL is returned.\r | |
662 | \r | |
663 | @param AllocationSize The number of bytes to allocate and zero.\r | |
664 | \r | |
665 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
666 | \r | |
667 | **/\r | |
668 | VOID *\r | |
669 | EFIAPI\r | |
670 | AllocateRuntimeZeroPool (\r | |
671 | IN UINTN AllocationSize\r | |
672 | )\r | |
673 | {\r | |
cdad7675 SZ |
674 | VOID *Buffer;\r |
675 | \r | |
676 | Buffer = InternalAllocateZeroPool (EfiRuntimeServicesData, AllocationSize);\r | |
677 | if (Buffer != NULL) {\r | |
678 | MemoryProfileLibRecord (\r | |
679 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
680 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RUNTIME_ZERO_POOL,\r | |
681 | EfiRuntimeServicesData,\r | |
682 | Buffer,\r | |
683 | AllocationSize,\r | |
684 | NULL\r | |
685 | );\r | |
686 | }\r | |
687 | return Buffer;\r | |
713b7781 | 688 | }\r |
689 | \r | |
690 | /**\r | |
691 | Allocates and zeros a buffer of type EfiReservedMemoryType.\r | |
692 | \r | |
693 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, clears the\r | |
694 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
695 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
696 | request, then NULL is returned.\r | |
697 | \r | |
698 | @param AllocationSize The number of bytes to allocate and zero.\r | |
699 | \r | |
700 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
701 | \r | |
702 | **/\r | |
703 | VOID *\r | |
704 | EFIAPI\r | |
705 | AllocateReservedZeroPool (\r | |
706 | IN UINTN AllocationSize\r | |
707 | )\r | |
708 | {\r | |
709 | return NULL;\r | |
710 | }\r | |
711 | \r | |
712 | /**\r | |
713 | Copies a buffer to an allocated buffer of a certain pool type.\r | |
714 | \r | |
715 | Allocates the number bytes specified by AllocationSize of a certain pool type, copies\r | |
716 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
717 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
718 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
719 | If Buffer is NULL, then ASSERT().\r | |
720 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). \r | |
721 | \r | |
722 | @param PoolType The type of pool to allocate.\r | |
723 | @param AllocationSize The number of bytes to allocate and zero.\r | |
724 | @param Buffer The buffer to copy to the allocated buffer.\r | |
725 | \r | |
726 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
727 | \r | |
728 | **/\r | |
729 | VOID *\r | |
730 | InternalAllocateCopyPool (\r | |
731 | IN EFI_MEMORY_TYPE PoolType, \r | |
732 | IN UINTN AllocationSize,\r | |
733 | IN CONST VOID *Buffer\r | |
734 | ) \r | |
735 | {\r | |
736 | VOID *Memory;\r | |
737 | \r | |
738 | ASSERT (Buffer != NULL);\r | |
739 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r | |
740 | \r | |
741 | Memory = InternalAllocatePool (PoolType, AllocationSize);\r | |
742 | if (Memory != NULL) {\r | |
743 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r | |
744 | }\r | |
745 | return Memory;\r | |
746 | } \r | |
747 | \r | |
748 | /**\r | |
2d28f3b7 | 749 | Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.\r |
713b7781 | 750 | \r |
2d28f3b7 | 751 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, copies\r |
713b7781 | 752 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r |
753 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
754 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
755 | \r | |
756 | If Buffer is NULL, then ASSERT().\r | |
757 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). \r | |
758 | \r | |
759 | @param AllocationSize The number of bytes to allocate and zero.\r | |
760 | @param Buffer The buffer to copy to the allocated buffer.\r | |
761 | \r | |
762 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
763 | \r | |
764 | **/\r | |
765 | VOID *\r | |
766 | EFIAPI\r | |
767 | AllocateCopyPool (\r | |
768 | IN UINTN AllocationSize,\r | |
769 | IN CONST VOID *Buffer\r | |
770 | )\r | |
771 | {\r | |
cdad7675 SZ |
772 | VOID *NewBuffer;\r |
773 | \r | |
774 | NewBuffer = InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer);\r | |
775 | if (NewBuffer != NULL) {\r | |
776 | MemoryProfileLibRecord (\r | |
777 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
778 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_COPY_POOL,\r | |
779 | EfiRuntimeServicesData,\r | |
780 | NewBuffer,\r | |
781 | AllocationSize,\r | |
782 | NULL\r | |
783 | );\r | |
784 | }\r | |
785 | return NewBuffer;\r | |
713b7781 | 786 | }\r |
787 | \r | |
788 | /**\r | |
789 | Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.\r | |
790 | \r | |
791 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, copies\r | |
792 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
793 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
794 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
795 | \r | |
796 | If Buffer is NULL, then ASSERT().\r | |
797 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). \r | |
798 | \r | |
799 | @param AllocationSize The number of bytes to allocate and zero.\r | |
800 | @param Buffer The buffer to copy to the allocated buffer.\r | |
801 | \r | |
802 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
803 | \r | |
804 | **/\r | |
805 | VOID *\r | |
806 | EFIAPI\r | |
807 | AllocateRuntimeCopyPool (\r | |
808 | IN UINTN AllocationSize,\r | |
809 | IN CONST VOID *Buffer\r | |
810 | )\r | |
811 | {\r | |
cdad7675 SZ |
812 | VOID *NewBuffer;\r |
813 | \r | |
814 | NewBuffer = InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer);\r | |
815 | if (NewBuffer != NULL) {\r | |
816 | MemoryProfileLibRecord (\r | |
817 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
818 | MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RUNTIME_COPY_POOL,\r | |
819 | EfiRuntimeServicesData,\r | |
820 | NewBuffer,\r | |
821 | AllocationSize,\r | |
822 | NULL\r | |
823 | );\r | |
824 | }\r | |
825 | return NewBuffer;\r | |
713b7781 | 826 | }\r |
827 | \r | |
828 | /**\r | |
829 | Copies a buffer to an allocated buffer of type EfiReservedMemoryType.\r | |
830 | \r | |
831 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, copies\r | |
832 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
833 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
834 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
835 | \r | |
836 | If Buffer is NULL, then ASSERT().\r | |
837 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT(). \r | |
838 | \r | |
839 | @param AllocationSize The number of bytes to allocate and zero.\r | |
840 | @param Buffer The buffer to copy to the allocated buffer.\r | |
841 | \r | |
842 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
843 | \r | |
844 | **/\r | |
845 | VOID *\r | |
846 | EFIAPI\r | |
847 | AllocateReservedCopyPool (\r | |
848 | IN UINTN AllocationSize,\r | |
849 | IN CONST VOID *Buffer\r | |
850 | )\r | |
851 | {\r | |
852 | return NULL;\r | |
853 | }\r | |
854 | \r | |
855 | /**\r | |
856 | Reallocates a buffer of a specified memory type.\r | |
857 | \r | |
858 | Allocates and zeros the number bytes specified by NewSize from memory of the type\r | |
859 | specified by PoolType. If OldBuffer is not NULL, then the smaller of OldSize and \r | |
860 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and \r | |
861 | OldBuffer is freed. A pointer to the newly allocated buffer is returned. \r | |
862 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not \r | |
863 | enough memory remaining to satisfy the request, then NULL is returned.\r | |
864 | \r | |
865 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r | |
866 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
867 | \r | |
868 | @param PoolType The type of pool to allocate.\r | |
869 | @param OldSize The size, in bytes, of OldBuffer.\r | |
870 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
871 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional \r | |
872 | parameter that may be NULL.\r | |
873 | \r | |
874 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
875 | \r | |
876 | **/\r | |
877 | VOID *\r | |
878 | InternalReallocatePool (\r | |
879 | IN EFI_MEMORY_TYPE PoolType, \r | |
880 | IN UINTN OldSize,\r | |
881 | IN UINTN NewSize,\r | |
882 | IN VOID *OldBuffer OPTIONAL\r | |
883 | )\r | |
884 | {\r | |
885 | VOID *NewBuffer;\r | |
886 | \r | |
887 | NewBuffer = InternalAllocateZeroPool (PoolType, NewSize);\r | |
888 | if (NewBuffer != NULL && OldBuffer != NULL) {\r | |
889 | CopyMem (NewBuffer, OldBuffer, MIN (OldSize, NewSize));\r | |
890 | FreePool (OldBuffer);\r | |
891 | }\r | |
892 | return NewBuffer;\r | |
893 | }\r | |
894 | \r | |
895 | /**\r | |
2d28f3b7 | 896 | Reallocates a buffer of type EfiRuntimeServicesData.\r |
713b7781 | 897 | \r |
898 | Allocates and zeros the number bytes specified by NewSize from memory of type\r | |
2d28f3b7 | 899 | EfiRuntimeServicesData. If OldBuffer is not NULL, then the smaller of OldSize and \r |
713b7781 | 900 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and \r |
901 | OldBuffer is freed. A pointer to the newly allocated buffer is returned. \r | |
902 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not \r | |
903 | enough memory remaining to satisfy the request, then NULL is returned.\r | |
904 | \r | |
905 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r | |
906 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
907 | \r | |
908 | @param OldSize The size, in bytes, of OldBuffer.\r | |
909 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
910 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional \r | |
911 | parameter that may be NULL.\r | |
912 | \r | |
913 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
914 | \r | |
915 | **/\r | |
916 | VOID *\r | |
917 | EFIAPI\r | |
918 | ReallocatePool (\r | |
919 | IN UINTN OldSize,\r | |
920 | IN UINTN NewSize,\r | |
921 | IN VOID *OldBuffer OPTIONAL\r | |
922 | )\r | |
923 | {\r | |
cdad7675 SZ |
924 | VOID *Buffer;\r |
925 | \r | |
926 | Buffer = InternalReallocatePool (EfiRuntimeServicesData, OldSize, NewSize, OldBuffer);\r | |
927 | if (Buffer != NULL) {\r | |
928 | MemoryProfileLibRecord (\r | |
929 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
930 | MEMORY_PROFILE_ACTION_LIB_REALLOCATE_POOL,\r | |
931 | EfiRuntimeServicesData,\r | |
932 | Buffer,\r | |
933 | NewSize,\r | |
934 | NULL\r | |
935 | );\r | |
936 | }\r | |
937 | return Buffer;\r | |
713b7781 | 938 | }\r |
939 | \r | |
940 | /**\r | |
941 | Reallocates a buffer of type EfiRuntimeServicesData.\r | |
942 | \r | |
943 | Allocates and zeros the number bytes specified by NewSize from memory of type\r | |
944 | EfiRuntimeServicesData. If OldBuffer is not NULL, then the smaller of OldSize and \r | |
945 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and \r | |
946 | OldBuffer is freed. A pointer to the newly allocated buffer is returned. \r | |
947 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not \r | |
948 | enough memory remaining to satisfy the request, then NULL is returned.\r | |
949 | \r | |
950 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r | |
951 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
952 | \r | |
953 | @param OldSize The size, in bytes, of OldBuffer.\r | |
954 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
955 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional \r | |
956 | parameter that may be NULL.\r | |
957 | \r | |
958 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
959 | \r | |
960 | **/\r | |
961 | VOID *\r | |
962 | EFIAPI\r | |
963 | ReallocateRuntimePool (\r | |
964 | IN UINTN OldSize,\r | |
965 | IN UINTN NewSize,\r | |
966 | IN VOID *OldBuffer OPTIONAL\r | |
967 | )\r | |
968 | {\r | |
cdad7675 SZ |
969 | VOID *Buffer;\r |
970 | \r | |
971 | Buffer = InternalReallocatePool (EfiRuntimeServicesData, OldSize, NewSize, OldBuffer);\r | |
972 | if (Buffer != NULL) {\r | |
973 | MemoryProfileLibRecord (\r | |
974 | (PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),\r | |
975 | MEMORY_PROFILE_ACTION_LIB_REALLOCATE_RUNTIME_POOL,\r | |
976 | EfiRuntimeServicesData,\r | |
977 | Buffer,\r | |
978 | NewSize,\r | |
979 | NULL\r | |
980 | );\r | |
981 | }\r | |
982 | return Buffer;\r | |
713b7781 | 983 | }\r |
984 | \r | |
985 | /**\r | |
986 | Reallocates a buffer of type EfiReservedMemoryType.\r | |
987 | \r | |
988 | Allocates and zeros the number bytes specified by NewSize from memory of type\r | |
989 | EfiReservedMemoryType. If OldBuffer is not NULL, then the smaller of OldSize and \r | |
990 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and \r | |
991 | OldBuffer is freed. A pointer to the newly allocated buffer is returned. \r | |
992 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not \r | |
993 | enough memory remaining to satisfy the request, then NULL is returned.\r | |
994 | \r | |
995 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r | |
996 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
997 | \r | |
998 | @param OldSize The size, in bytes, of OldBuffer.\r | |
999 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
1000 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional \r | |
1001 | parameter that may be NULL.\r | |
1002 | \r | |
1003 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
1004 | \r | |
1005 | **/\r | |
1006 | VOID *\r | |
1007 | EFIAPI\r | |
1008 | ReallocateReservedPool (\r | |
1009 | IN UINTN OldSize,\r | |
1010 | IN UINTN NewSize,\r | |
1011 | IN VOID *OldBuffer OPTIONAL\r | |
1012 | )\r | |
1013 | {\r | |
1014 | return NULL;\r | |
1015 | }\r | |
1016 | \r | |
1017 | /**\r | |
1018 | Frees a buffer that was previously allocated with one of the pool allocation functions in the\r | |
1019 | Memory Allocation Library.\r | |
1020 | \r | |
1021 | Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the\r | |
1022 | pool allocation services of the Memory Allocation Library. If it is not possible to free pool\r | |
1023 | resources, then this function will perform no actions.\r | |
1024 | \r | |
1025 | If Buffer was not allocated with a pool allocation function in the Memory Allocation Library,\r | |
1026 | then ASSERT().\r | |
1027 | \r | |
1028 | @param Buffer Pointer to the buffer to free.\r | |
1029 | \r | |
1030 | **/\r | |
1031 | VOID\r | |
1032 | EFIAPI\r | |
1033 | FreePool (\r | |
1034 | IN VOID *Buffer\r | |
1035 | )\r | |
1036 | {\r | |
1037 | EFI_STATUS Status;\r | |
1038 | \r | |
34401578 LG |
1039 | if (BufferInSmram (Buffer)) {\r |
1040 | //\r | |
1041 | // When Buffer is in SMRAM range, it should be allocated by SmmAllocatePool() service.\r | |
1042 | // So, SmmFreePool() service is used to free it.\r | |
1043 | //\r | |
1044 | Status = SmmFreePool (Buffer);\r | |
1045 | } else {\r | |
1046 | //\r | |
1047 | // When Buffer is out of SMRAM range, it should be allocated by gBS->AllocatePool() service.\r | |
1048 | // So, gBS->FreePool() service is used to free it.\r | |
1049 | //\r | |
1050 | Status = gBS->FreePool (Buffer);\r | |
1051 | }\r | |
713b7781 | 1052 | ASSERT_EFI_ERROR (Status);\r |
1053 | }\r | |
1054 | \r | |
842b1242 JY |
1055 | /**\r |
1056 | The constructor function calls SmmInitializeMemoryServices to initialize memory in SMRAM.\r | |
1057 | \r | |
1058 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
1059 | @param SystemTable A pointer to the EFI System Table.\r | |
1060 | \r | |
1061 | @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r | |
1062 | \r | |
1063 | **/\r | |
1064 | EFI_STATUS\r | |
1065 | EFIAPI\r | |
1066 | PiSmmCoreMemoryAllocationLibConstructor (\r | |
1067 | IN EFI_HANDLE ImageHandle,\r | |
1068 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1069 | )\r | |
1070 | {\r | |
ecf85eb2 | 1071 | EFI_STATUS Status;\r |
842b1242 | 1072 | SMM_CORE_PRIVATE_DATA *SmmCorePrivate;\r |
f3b6e048 | 1073 | UINTN Size;\r |
ecf85eb2 | 1074 | VOID *BootServicesData;\r |
842b1242 JY |
1075 | \r |
1076 | SmmCorePrivate = (SMM_CORE_PRIVATE_DATA *)ImageHandle;\r | |
ecf85eb2 | 1077 | \r |
842b1242 | 1078 | //\r |
ecf85eb2 SZ |
1079 | // The FreePool()/FreePages() will need use SmramRanges data to know whether\r |
1080 | // the buffer to free is in SMRAM range or not. And there may be FreePool()/\r | |
1081 | // FreePages() indrectly during calling SmmInitializeMemoryServices(), but\r | |
1082 | // no SMRAM could be allocated before calling SmmInitializeMemoryServices(),\r | |
1083 | // so temporarily use BootServicesData to hold the SmramRanges data.\r | |
842b1242 | 1084 | //\r |
c03beb76 | 1085 | mSmmCoreMemoryAllocLibSmramRangeCount = SmmCorePrivate->SmramRangeCount;\r |
f3b6e048 | 1086 | Size = mSmmCoreMemoryAllocLibSmramRangeCount * sizeof (EFI_SMRAM_DESCRIPTOR);\r |
ecf85eb2 SZ |
1087 | Status = gBS->AllocatePool (EfiBootServicesData, Size, (VOID **) &mSmmCoreMemoryAllocLibSmramRanges);\r |
1088 | ASSERT_EFI_ERROR (Status);\r | |
f3b6e048 | 1089 | ASSERT (mSmmCoreMemoryAllocLibSmramRanges != NULL);\r |
c03beb76 | 1090 | CopyMem (mSmmCoreMemoryAllocLibSmramRanges, SmmCorePrivate->SmramRanges, Size);\r |
f3b6e048 | 1091 | \r |
ecf85eb2 SZ |
1092 | //\r |
1093 | // Initialize memory service using free SMRAM\r | |
1094 | //\r | |
1095 | SmmInitializeMemoryServices (SmmCorePrivate->SmramRangeCount, SmmCorePrivate->SmramRanges);\r | |
1096 | \r | |
1097 | //\r | |
1098 | // Move the SmramRanges data from BootServicesData to SMRAM.\r | |
1099 | //\r | |
1100 | BootServicesData = mSmmCoreMemoryAllocLibSmramRanges;\r | |
1101 | mSmmCoreMemoryAllocLibSmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocateCopyPool (Size, (VOID *) BootServicesData);\r | |
1102 | ASSERT (mSmmCoreMemoryAllocLibSmramRanges != NULL);\r | |
1103 | \r | |
1104 | //\r | |
1105 | // Free the temporarily used BootServicesData.\r | |
1106 | //\r | |
1107 | Status = gBS->FreePool (BootServicesData);\r | |
1108 | ASSERT_EFI_ERROR (Status);\r | |
1109 | \r | |
842b1242 JY |
1110 | return EFI_SUCCESS;\r |
1111 | }\r |