| e386b444 |
1 | /** @file\r |
| 2 | Support routines for memory allocation routines for use with drivers.\r |
| 3 | \r |
| 4 | Copyright (c) 2006, Intel Corporation<BR>\r |
| 5 | All rights reserved. This program and the accompanying materials \r |
| 6 | are licensed and made available under the terms and conditions of the BSD License \r |
| 7 | which accompanies this distribution. The full text of the license may be found at \r |
| 8 | http://opensource.org/licenses/bsd-license.php \r |
| 9 | \r |
| 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
| 12 | \r |
| e386b444 |
13 | **/\r |
| 14 | \r |
| c892d846 |
15 | \r |
| c7d265a9 |
16 | #include <PiPei.h>\r |
| c892d846 |
17 | \r |
| 18 | \r |
| c7d265a9 |
19 | #include <Library/MemoryAllocationLib.h>\r |
| 20 | #include <Library/PeiServicesTablePointerLib.h>\r |
| 1c280088 |
21 | #include <Library/PeiServicesLib.h>\r |
| c7d265a9 |
22 | #include <Library/BaseMemoryLib.h>\r |
| 23 | #include <Library/DebugLib.h>\r |
| e386b444 |
24 | \r |
| 25 | #include "MemoryAllocationLibInternals.h"\r |
| 26 | \r |
| 27 | /**\r |
| 28 | Allocates one or more 4KB pages of a certain memory type.\r |
| 29 | \r |
| 30 | Allocates the number of 4KB pages of a certain memory type and returns a pointer to the allocated\r |
| 31 | buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL is returned.\r |
| 32 | If there is not enough memory remaining to satisfy the request, then NULL is returned.\r |
| 33 | \r |
| 34 | @param MemoryType The type of memory to allocate.\r |
| 35 | @param Pages The number of 4 KB pages to allocate.\r |
| 36 | \r |
| 37 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 38 | \r |
| 39 | **/\r |
| 40 | VOID *\r |
| 41 | InternalAllocatePages (\r |
| 42 | IN EFI_MEMORY_TYPE MemoryType, \r |
| 43 | IN UINTN Pages\r |
| 44 | )\r |
| 45 | {\r |
| 46 | EFI_STATUS Status;\r |
| 47 | EFI_PHYSICAL_ADDRESS Memory; \r |
| e386b444 |
48 | \r |
| 49 | if (Pages == 0) {\r |
| 50 | return NULL;\r |
| 51 | }\r |
| 52 | \r |
| 1c280088 |
53 | Status = PeiServicesAllocatePages (MemoryType, Pages, &Memory);\r |
| e386b444 |
54 | if (EFI_ERROR (Status)) {\r |
| 55 | Memory = 0;\r |
| 56 | }\r |
| 57 | return (VOID *) (UINTN) Memory;\r |
| 58 | }\r |
| 59 | \r |
| 60 | /**\r |
| 61 | Allocates one or more 4KB pages of type EfiBootServicesData.\r |
| 62 | \r |
| 63 | Allocates the number of 4KB pages of type EfiBootServicesData and returns a pointer to the\r |
| 64 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r |
| 65 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r |
| 66 | returned.\r |
| 67 | \r |
| 68 | @param Pages The number of 4 KB pages to allocate.\r |
| 69 | \r |
| 70 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 71 | \r |
| 72 | **/\r |
| 73 | VOID *\r |
| 74 | EFIAPI\r |
| 75 | AllocatePages (\r |
| 76 | IN UINTN Pages\r |
| 77 | )\r |
| 78 | {\r |
| 79 | return InternalAllocatePages (EfiBootServicesData, Pages);\r |
| 80 | }\r |
| 81 | \r |
| 82 | /**\r |
| 83 | Allocates one or more 4KB pages of type EfiRuntimeServicesData.\r |
| 84 | \r |
| 85 | Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the\r |
| 86 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r |
| 87 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r |
| 88 | returned.\r |
| 89 | \r |
| 90 | @param Pages The number of 4 KB pages to allocate.\r |
| 91 | \r |
| 92 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 93 | \r |
| 94 | **/\r |
| 95 | VOID *\r |
| 96 | EFIAPI\r |
| 97 | AllocateRuntimePages (\r |
| 98 | IN UINTN Pages\r |
| 99 | )\r |
| 100 | {\r |
| 101 | return InternalAllocatePages (EfiRuntimeServicesData, Pages);\r |
| 102 | }\r |
| 103 | \r |
| 104 | /**\r |
| 105 | Allocates one or more 4KB pages of type EfiReservedMemoryType.\r |
| 106 | \r |
| 107 | Allocates the number of 4KB pages of type EfiReservedMemoryType and returns a pointer to the\r |
| 108 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r |
| 109 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r |
| 110 | returned.\r |
| 111 | \r |
| 112 | @param Pages The number of 4 KB pages to allocate.\r |
| 113 | \r |
| 114 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 115 | \r |
| 116 | **/\r |
| 117 | VOID *\r |
| 118 | EFIAPI\r |
| 119 | AllocateReservedPages (\r |
| 120 | IN UINTN Pages\r |
| 121 | )\r |
| 122 | {\r |
| 123 | return InternalAllocatePages (EfiReservedMemoryType, Pages);\r |
| 124 | }\r |
| 125 | \r |
| 126 | /**\r |
| 127 | Frees one or more 4KB pages that were previously allocated with one of the page allocation\r |
| 128 | functions in the Memory Allocation Library.\r |
| 129 | \r |
| 130 | Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r |
| 131 | must have been allocated on a previous call to the page allocation services of the Memory\r |
| 132 | Allocation Library.\r |
| 133 | If Buffer was not allocated with a page allocation function in the Memory Allocation Library,\r |
| 134 | then ASSERT().\r |
| 135 | If Pages is zero, then ASSERT().\r |
| 136 | \r |
| 137 | @param Buffer Pointer to the buffer of pages to free.\r |
| 138 | @param Pages The number of 4 KB pages to free.\r |
| 139 | \r |
| 140 | **/\r |
| 141 | VOID\r |
| 142 | EFIAPI\r |
| 143 | FreePages (\r |
| 144 | IN VOID *Buffer,\r |
| 145 | IN UINTN Pages\r |
| 146 | )\r |
| 147 | {\r |
| 148 | //\r |
| 149 | // PEI phase does not support to free pages, so leave it as NOP.\r |
| 150 | //\r |
| 151 | }\r |
| 152 | \r |
| 153 | /**\r |
| 154 | Allocates one or more 4KB pages of a certain memory type at a specified alignment.\r |
| 155 | \r |
| 156 | Allocates the number of 4KB pages specified by Pages of a certain memory type with an alignment\r |
| 157 | specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is returned.\r |
| 158 | If there is not enough memory at the specified alignment remaining to satisfy the request, then\r |
| 159 | NULL is returned.\r |
| 160 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 161 | \r |
| 162 | @param MemoryType The type of memory to allocate.\r |
| 163 | @param Pages The number of 4 KB pages to allocate.\r |
| 164 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 165 | If Alignment is zero, then byte alignment is used.\r |
| 166 | \r |
| 167 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 168 | \r |
| 169 | **/\r |
| 170 | VOID *\r |
| 171 | InternalAllocateAlignedPages (\r |
| 172 | IN EFI_MEMORY_TYPE MemoryType, \r |
| 173 | IN UINTN Pages,\r |
| 174 | IN UINTN Alignment\r |
| 175 | )\r |
| 176 | {\r |
| 177 | VOID *Memory;\r |
| 178 | UINTN AlignmentMask;\r |
| 179 | \r |
| 180 | //\r |
| 181 | // Alignment must be a power of two or zero.\r |
| 182 | //\r |
| 183 | ASSERT ((Alignment & (Alignment - 1)) == 0);\r |
| 184 | \r |
| 185 | if (Pages == 0) {\r |
| 186 | return NULL;\r |
| 187 | }\r |
| 188 | //\r |
| 189 | // Make sure that Pages plus EFI_SIZE_TO_PAGES (Alignment) does not overflow.\r |
| 190 | //\r |
| 191 | ASSERT (Pages <= (MAX_ADDRESS - EFI_SIZE_TO_PAGES (Alignment)));\r |
| 192 | //\r |
| 193 | // We would rather waste some memory to save PEI code size.\r |
| 194 | //\r |
| 195 | Memory = InternalAllocatePages (MemoryType, Pages + EFI_SIZE_TO_PAGES (Alignment));\r |
| 196 | if (Alignment == 0) {\r |
| 197 | AlignmentMask = Alignment;\r |
| 198 | } else {\r |
| 199 | AlignmentMask = Alignment - 1; \r |
| 200 | }\r |
| 201 | return (VOID *) (UINTN) (((UINTN) Memory + AlignmentMask) & ~AlignmentMask);\r |
| 202 | }\r |
| 203 | \r |
| 204 | /**\r |
| 205 | Allocates one or more 4KB pages of type EfiBootServicesData at a specified alignment.\r |
| 206 | \r |
| 207 | Allocates the number of 4KB pages specified by Pages of type EfiBootServicesData with an\r |
| 208 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r |
| 209 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r |
| 210 | request, then NULL is returned.\r |
| 211 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 212 | \r |
| 213 | @param Pages The number of 4 KB pages to allocate.\r |
| 214 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 215 | If Alignment is zero, then byte alignment is used.\r |
| 216 | \r |
| 217 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 218 | \r |
| 219 | **/\r |
| 220 | VOID *\r |
| 221 | EFIAPI\r |
| 222 | AllocateAlignedPages (\r |
| 223 | IN UINTN Pages,\r |
| 224 | IN UINTN Alignment\r |
| 225 | )\r |
| 226 | {\r |
| 227 | return InternalAllocateAlignedPages (EfiBootServicesData, Pages, Alignment);\r |
| 228 | }\r |
| 229 | \r |
| 230 | /**\r |
| 231 | Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.\r |
| 232 | \r |
| 233 | Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData with an\r |
| 234 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r |
| 235 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r |
| 236 | request, then NULL is returned.\r |
| 237 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 238 | \r |
| 239 | @param Pages The number of 4 KB pages to allocate.\r |
| 240 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 241 | If Alignment is zero, then byte alignment is used.\r |
| 242 | \r |
| 243 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 244 | \r |
| 245 | **/\r |
| 246 | VOID *\r |
| 247 | EFIAPI\r |
| 248 | AllocateAlignedRuntimePages (\r |
| 249 | IN UINTN Pages,\r |
| 250 | IN UINTN Alignment\r |
| 251 | )\r |
| 252 | {\r |
| 253 | return InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);\r |
| 254 | }\r |
| 255 | \r |
| 256 | /**\r |
| 257 | Allocates one or more 4KB pages of type EfiReservedMemoryType at a specified alignment.\r |
| 258 | \r |
| 259 | Allocates the number of 4KB pages specified by Pages of type EfiReservedMemoryType with an\r |
| 260 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r |
| 261 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r |
| 262 | request, then NULL is returned.\r |
| 263 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 264 | \r |
| 265 | @param Pages The number of 4 KB pages to allocate.\r |
| 266 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 267 | If Alignment is zero, then byte alignment is used.\r |
| 268 | \r |
| 269 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 270 | \r |
| 271 | **/\r |
| 272 | VOID *\r |
| 273 | EFIAPI\r |
| 274 | AllocateAlignedReservedPages (\r |
| 275 | IN UINTN Pages,\r |
| 276 | IN UINTN Alignment\r |
| 277 | )\r |
| 278 | {\r |
| 279 | return InternalAllocateAlignedPages (EfiReservedMemoryType, Pages, Alignment);\r |
| 280 | }\r |
| 281 | \r |
| 282 | /**\r |
| 283 | Frees one or more 4KB pages that were previously allocated with one of the aligned page\r |
| 284 | allocation functions in the Memory Allocation Library.\r |
| 285 | \r |
| 286 | Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r |
| 287 | must have been allocated on a previous call to the aligned page allocation services of the Memory\r |
| 288 | Allocation Library.\r |
| 289 | If Buffer was not allocated with an aligned page allocation function in the Memory Allocation\r |
| 290 | Library, then ASSERT().\r |
| 291 | If Pages is zero, then ASSERT().\r |
| 292 | \r |
| 293 | @param Buffer Pointer to the buffer of pages to free.\r |
| 294 | @param Pages The number of 4 KB pages to free.\r |
| 295 | \r |
| 296 | **/\r |
| 297 | VOID\r |
| 298 | EFIAPI\r |
| 299 | FreeAlignedPages (\r |
| 300 | IN VOID *Buffer,\r |
| 301 | IN UINTN Pages\r |
| 302 | )\r |
| 303 | {\r |
| 304 | //\r |
| 305 | // PEI phase does not support to free pages, so leave it as NOP.\r |
| 306 | //\r |
| 307 | }\r |
| 308 | \r |
| 309 | /**\r |
| 310 | Allocates a buffer of a certain pool type.\r |
| 311 | \r |
| 312 | Allocates the number bytes specified by AllocationSize of a certain pool type and returns a\r |
| 313 | pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r |
| 314 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r |
| 315 | \r |
| 316 | @param MemoryType The type of memory to allocate.\r |
| 317 | @param AllocationSize The number of bytes to allocate.\r |
| 318 | \r |
| 319 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 320 | \r |
| 321 | **/\r |
| 322 | VOID *\r |
| 323 | InternalAllocatePool (\r |
| 324 | IN EFI_MEMORY_TYPE MemoryType, \r |
| 325 | IN UINTN AllocationSize\r |
| 326 | )\r |
| 327 | {\r |
| 328 | //\r |
| 329 | // If we need lots of small runtime/reserved memory type from PEI in the future, \r |
| 330 | // we can consider providing a more complex algorithm that allocates runtime pages and \r |
| 331 | // provide pool allocations from those pages. \r |
| 332 | //\r |
| 333 | return InternalAllocatePages (MemoryType, EFI_SIZE_TO_PAGES (AllocationSize));\r |
| 334 | }\r |
| 335 | \r |
| 336 | /**\r |
| 337 | Allocates a buffer of type EfiBootServicesData.\r |
| 338 | \r |
| 339 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData and returns a\r |
| 340 | pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r |
| 341 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r |
| 342 | \r |
| 343 | @param AllocationSize The number of bytes to allocate.\r |
| 344 | \r |
| 345 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 346 | \r |
| 347 | **/\r |
| 348 | VOID *\r |
| 349 | EFIAPI\r |
| 350 | AllocatePool (\r |
| 351 | IN UINTN AllocationSize\r |
| 352 | )\r |
| 353 | {\r |
| 354 | EFI_STATUS Status;\r |
| e386b444 |
355 | VOID *Buffer;\r |
| 356 | \r |
| 1c280088 |
357 | Status = PeiServicesAllocatePool (AllocationSize, &Buffer);\r |
| e386b444 |
358 | if (EFI_ERROR (Status)) {\r |
| 359 | Buffer = NULL;\r |
| 360 | }\r |
| 361 | return Buffer;\r |
| 362 | }\r |
| 363 | \r |
| 364 | /**\r |
| 365 | Allocates a buffer of type EfiRuntimeServicesData.\r |
| 366 | \r |
| 367 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData and returns\r |
| 368 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r |
| 369 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r |
| 370 | \r |
| 371 | @param AllocationSize The number of bytes to allocate.\r |
| 372 | \r |
| 373 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 374 | \r |
| 375 | **/\r |
| 376 | VOID *\r |
| 377 | EFIAPI\r |
| 378 | AllocateRuntimePool (\r |
| 379 | IN UINTN AllocationSize\r |
| 380 | )\r |
| 381 | {\r |
| 382 | return InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);\r |
| 383 | }\r |
| 384 | \r |
| 385 | /**\r |
| 386 | Allocates a buffer of type EfieservedMemoryType.\r |
| 387 | \r |
| 388 | Allocates the number bytes specified by AllocationSize of type EfieservedMemoryType and returns\r |
| 389 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r |
| 390 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r |
| 391 | \r |
| 392 | @param AllocationSize The number of bytes to allocate.\r |
| 393 | \r |
| 394 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 395 | \r |
| 396 | **/\r |
| 397 | VOID *\r |
| 398 | EFIAPI\r |
| 399 | AllocateReservedPool (\r |
| 400 | IN UINTN AllocationSize\r |
| 401 | )\r |
| 402 | {\r |
| 403 | return InternalAllocatePool (EfiReservedMemoryType, AllocationSize);\r |
| 404 | }\r |
| 405 | \r |
| 406 | /**\r |
| 407 | Allocates and zeros a buffer of a certian pool type.\r |
| 408 | \r |
| 409 | Allocates the number bytes specified by AllocationSize of a certian pool type, clears the buffer\r |
| 410 | with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a valid\r |
| 411 | buffer of 0 size is returned. If there is not enough memory remaining to satisfy the request,\r |
| 412 | then NULL is returned.\r |
| 413 | \r |
| 414 | @param PoolType The type of memory to allocate.\r |
| 415 | @param AllocationSize The number of bytes to allocate and zero.\r |
| 416 | \r |
| 417 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 418 | \r |
| 419 | **/\r |
| 420 | VOID *\r |
| 421 | InternalAllocateZeroPool (\r |
| 422 | IN EFI_MEMORY_TYPE PoolType, \r |
| 423 | IN UINTN AllocationSize\r |
| 424 | ) \r |
| 425 | {\r |
| 426 | VOID *Memory;\r |
| 427 | \r |
| 428 | Memory = InternalAllocatePool (PoolType, AllocationSize);\r |
| 429 | if (Memory != NULL) {\r |
| 430 | Memory = ZeroMem (Memory, AllocationSize);\r |
| 431 | }\r |
| 432 | return Memory;\r |
| 433 | }\r |
| 434 | \r |
| 435 | /**\r |
| 436 | Allocates and zeros a buffer of type EfiBootServicesData.\r |
| 437 | \r |
| 438 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, clears the\r |
| 439 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r |
| 440 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r |
| 441 | request, then NULL is returned.\r |
| 442 | \r |
| 443 | @param AllocationSize The number of bytes to allocate and zero.\r |
| 444 | \r |
| 445 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 446 | \r |
| 447 | **/\r |
| 448 | VOID *\r |
| 449 | EFIAPI\r |
| 450 | AllocateZeroPool (\r |
| 451 | IN UINTN AllocationSize\r |
| 452 | )\r |
| 453 | {\r |
| 454 | VOID *Memory;\r |
| 455 | \r |
| 456 | Memory = AllocatePool (AllocationSize);\r |
| 457 | if (Memory != NULL) {\r |
| 458 | Memory = ZeroMem (Memory, AllocationSize);\r |
| 459 | }\r |
| 460 | return Memory;\r |
| 461 | }\r |
| 462 | \r |
| 463 | /**\r |
| 464 | Allocates and zeros a buffer of type EfiRuntimeServicesData.\r |
| 465 | \r |
| 466 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, clears the\r |
| 467 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r |
| 468 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r |
| 469 | request, then NULL is returned.\r |
| 470 | \r |
| 471 | @param AllocationSize The number of bytes to allocate and zero.\r |
| 472 | \r |
| 473 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 474 | \r |
| 475 | **/\r |
| 476 | VOID *\r |
| 477 | EFIAPI\r |
| 478 | AllocateRuntimeZeroPool (\r |
| 479 | IN UINTN AllocationSize\r |
| 480 | )\r |
| 481 | {\r |
| 482 | return InternalAllocateZeroPool (EfiRuntimeServicesData, AllocationSize);\r |
| 483 | }\r |
| 484 | \r |
| 485 | /**\r |
| 486 | Allocates and zeros a buffer of type EfiReservedMemoryType.\r |
| 487 | \r |
| 488 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, clears the\r |
| 489 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r |
| 490 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r |
| 491 | request, then NULL is returned.\r |
| 492 | \r |
| 493 | @param AllocationSize The number of bytes to allocate and zero.\r |
| 494 | \r |
| 495 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 496 | \r |
| 497 | **/\r |
| 498 | VOID *\r |
| 499 | EFIAPI\r |
| 500 | AllocateReservedZeroPool (\r |
| 501 | IN UINTN AllocationSize\r |
| 502 | )\r |
| 503 | {\r |
| 504 | return InternalAllocateZeroPool (EfiReservedMemoryType, AllocationSize);\r |
| 505 | }\r |
| 506 | \r |
| 507 | /**\r |
| 508 | Copies a buffer to an allocated buffer of a certian pool type.\r |
| 509 | \r |
| 510 | Allocates the number bytes specified by AllocationSize of a certian pool type, copies\r |
| 511 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r |
| 512 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
| 513 | is not enough memory remaining to satisfy the request, then NULL is returned.\r |
| 514 | If Buffer is NULL, then ASSERT().\r |
| 515 | If AllocationSize is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT(). \r |
| 516 | \r |
| 517 | @param PoolType The type of pool to allocate.\r |
| 518 | @param AllocationSize The number of bytes to allocate and zero.\r |
| 519 | @param Buffer The buffer to copy to the allocated buffer.\r |
| 520 | \r |
| 521 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 522 | \r |
| 523 | **/\r |
| 524 | VOID *\r |
| 525 | InternalAllocateCopyPool (\r |
| 526 | IN EFI_MEMORY_TYPE PoolType, \r |
| 527 | IN UINTN AllocationSize,\r |
| 528 | IN CONST VOID *Buffer\r |
| 529 | ) \r |
| 530 | {\r |
| 531 | VOID *Memory;\r |
| 532 | \r |
| 533 | ASSERT (Buffer != NULL);\r |
| 534 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r |
| 535 | \r |
| 536 | Memory = InternalAllocatePool (PoolType, AllocationSize);\r |
| 537 | if (Memory != NULL) {\r |
| 538 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r |
| 539 | }\r |
| 540 | return Memory;\r |
| 541 | } \r |
| 542 | \r |
| 543 | /**\r |
| 544 | Copies a buffer to an allocated buffer of type EfiBootServicesData.\r |
| 545 | \r |
| 546 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, copies\r |
| 547 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r |
| 548 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
| 549 | is not enough memory remaining to satisfy the request, then NULL is returned.\r |
| 550 | If Buffer is NULL, then ASSERT().\r |
| 551 | If AllocationSize is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT(). \r |
| 552 | \r |
| 553 | @param AllocationSize The number of bytes to allocate and zero.\r |
| 554 | @param Buffer The buffer to copy to the allocated buffer.\r |
| 555 | \r |
| 556 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 557 | \r |
| 558 | **/\r |
| 559 | VOID *\r |
| 560 | EFIAPI\r |
| 561 | AllocateCopyPool (\r |
| 562 | IN UINTN AllocationSize,\r |
| 563 | IN CONST VOID *Buffer\r |
| 564 | )\r |
| 565 | {\r |
| 566 | VOID *Memory;\r |
| 567 | \r |
| 568 | ASSERT (Buffer != NULL);\r |
| 569 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r |
| 570 | \r |
| 571 | Memory = AllocatePool (AllocationSize);\r |
| 572 | if (Memory != NULL) {\r |
| 573 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r |
| 574 | }\r |
| 575 | return Memory;\r |
| 576 | }\r |
| 577 | \r |
| 578 | /**\r |
| 579 | Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.\r |
| 580 | \r |
| 581 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, copies\r |
| 582 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r |
| 583 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
| 584 | is not enough memory remaining to satisfy the request, then NULL is returned.\r |
| 585 | If Buffer is NULL, then ASSERT().\r |
| 586 | If AllocationSize is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT(). \r |
| 587 | \r |
| 588 | @param AllocationSize The number of bytes to allocate and zero.\r |
| 589 | @param Buffer The buffer to copy to the allocated buffer.\r |
| 590 | \r |
| 591 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 592 | \r |
| 593 | **/\r |
| 594 | VOID *\r |
| 595 | EFIAPI\r |
| 596 | AllocateRuntimeCopyPool (\r |
| 597 | IN UINTN AllocationSize,\r |
| 598 | IN CONST VOID *Buffer\r |
| 599 | )\r |
| 600 | {\r |
| 601 | return InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer);\r |
| 602 | }\r |
| 603 | \r |
| 604 | /**\r |
| 605 | Copies a buffer to an allocated buffer of type EfiReservedMemoryType.\r |
| 606 | \r |
| 607 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, copies\r |
| 608 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r |
| 609 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
| 610 | is not enough memory remaining to satisfy the request, then NULL is returned.\r |
| 611 | If Buffer is NULL, then ASSERT().\r |
| 612 | If AllocationSize is greater than (MAX_ADDRESS ? Buffer + 1), then ASSERT(). \r |
| 613 | \r |
| 614 | @param AllocationSize The number of bytes to allocate and zero.\r |
| 615 | @param Buffer The buffer to copy to the allocated buffer.\r |
| 616 | \r |
| 617 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 618 | \r |
| 619 | **/\r |
| 620 | VOID *\r |
| 621 | EFIAPI\r |
| 622 | AllocateReservedCopyPool (\r |
| 623 | IN UINTN AllocationSize,\r |
| 624 | IN CONST VOID *Buffer\r |
| 625 | )\r |
| 626 | {\r |
| 627 | return InternalAllocateCopyPool (EfiReservedMemoryType, AllocationSize, Buffer);\r |
| 628 | }\r |
| 629 | \r |
| 630 | /**\r |
| 631 | Frees a buffer that was previously allocated with one of the pool allocation functions in the\r |
| 632 | Memory Allocation Library.\r |
| 633 | \r |
| 634 | Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the\r |
| 635 | pool allocation services of the Memory Allocation Library.\r |
| 636 | If Buffer was not allocated with a pool allocation function in the Memory Allocation Library,\r |
| 637 | then ASSERT().\r |
| 638 | \r |
| 639 | @param Buffer Pointer to the buffer to free.\r |
| 640 | \r |
| 641 | **/\r |
| 642 | VOID\r |
| 643 | EFIAPI\r |
| 644 | FreePool (\r |
| 645 | IN VOID *Buffer\r |
| 646 | )\r |
| 647 | {\r |
| 648 | //\r |
| 649 | // PEI phase does not support to free pool, so leave it as NOP.\r |
| 650 | //\r |
| 651 | }\r |
| 652 | \r |
| 653 | /**\r |
| 654 | Allocates a buffer of a certain pool type at a specified alignment.\r |
| 655 | \r |
| 656 | Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment\r |
| 657 | specified by Alignment. The allocated buffer is returned. If AllocationSize is 0, then a valid\r |
| 658 | buffer of 0 size is returned. If there is not enough memory at the specified alignment remaining\r |
| 659 | to satisfy the request, then NULL is returned.\r |
| 660 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 661 | \r |
| 662 | @param PoolType The type of pool to allocate.\r |
| 663 | @param AllocationSize The number of bytes to allocate.\r |
| 664 | @param Alignment The requested alignment of the allocation. Must be a power of two. If Alignment is zero, then byte alignment is used.\r |
| 665 | If Alignment is zero, then byte alignment is used.\r |
| 666 | \r |
| 667 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 668 | \r |
| 669 | **/\r |
| 670 | VOID *\r |
| 671 | InternalAllocateAlignedPool (\r |
| 672 | IN EFI_MEMORY_TYPE PoolType,\r |
| 673 | IN UINTN AllocationSize,\r |
| 674 | IN UINTN Alignment\r |
| 675 | )\r |
| 676 | {\r |
| 677 | VOID *RawAddress;\r |
| 678 | UINTN AlignedAddress;\r |
| 679 | UINTN AlignmentMask;\r |
| 680 | \r |
| 681 | //\r |
| 682 | // Alignment must be a power of two or zero.\r |
| 683 | //\r |
| 684 | ASSERT ((Alignment & (Alignment - 1)) == 0);\r |
| 685 | \r |
| 686 | if (Alignment == 0) {\r |
| 687 | AlignmentMask = Alignment;\r |
| 688 | } else {\r |
| 689 | AlignmentMask = Alignment - 1;\r |
| 690 | }\r |
| 691 | //\r |
| 692 | // Make sure that AllocationSize plus AlignmentMask does not overflow.\r |
| 693 | //\r |
| 694 | ASSERT (AllocationSize <= (MAX_ADDRESS - AlignmentMask));\r |
| 695 | \r |
| 696 | RawAddress = InternalAllocatePool (PoolType, AllocationSize + AlignmentMask);\r |
| 697 | \r |
| 698 | AlignedAddress = ((UINTN) RawAddress + AlignmentMask) & ~AlignmentMask;\r |
| 699 | \r |
| 700 | return (VOID *) AlignedAddress;\r |
| 701 | }\r |
| 702 | \r |
| 703 | /**\r |
| 704 | Allocates a buffer of type EfiBootServicesData at a specified alignment.\r |
| 705 | \r |
| 706 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData with an\r |
| 707 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r |
| 708 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r |
| 709 | alignment remaining to satisfy the request, then NULL is returned.\r |
| 710 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 711 | \r |
| 712 | @param AllocationSize The number of bytes to allocate.\r |
| 713 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 714 | If Alignment is zero, then byte alignment is used.\r |
| 715 | \r |
| 716 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 717 | \r |
| 718 | **/\r |
| 719 | VOID *\r |
| 720 | EFIAPI\r |
| 721 | AllocateAlignedPool (\r |
| 722 | IN UINTN AllocationSize,\r |
| 723 | IN UINTN Alignment\r |
| 724 | )\r |
| 725 | {\r |
| 726 | VOID *RawAddress;\r |
| 727 | UINTN AlignedAddress;\r |
| 728 | UINTN AlignmentMask;\r |
| 729 | \r |
| 730 | //\r |
| 731 | // Alignment must be a power of two or zero.\r |
| 732 | //\r |
| 733 | ASSERT ((Alignment & (Alignment - 1)) == 0);\r |
| 734 | \r |
| 735 | if (Alignment == 0) {\r |
| 736 | AlignmentMask = Alignment;\r |
| 737 | } else {\r |
| 738 | AlignmentMask = Alignment - 1;\r |
| 739 | }\r |
| 740 | \r |
| 741 | //\r |
| 742 | // Make sure that AllocationSize plus AlignmentMask does not overflow.\r |
| 743 | //\r |
| 744 | ASSERT (AllocationSize <= (MAX_ADDRESS - AlignmentMask));\r |
| 745 | \r |
| 746 | RawAddress = AllocatePool (AllocationSize + AlignmentMask);\r |
| 747 | \r |
| 748 | AlignedAddress = ((UINTN) RawAddress + AlignmentMask) & ~AlignmentMask;\r |
| 749 | \r |
| 750 | return (VOID *) AlignedAddress;\r |
| 751 | }\r |
| 752 | \r |
| 753 | /**\r |
| 754 | Allocates a buffer of type EfiRuntimeServicesData at a specified alignment.\r |
| 755 | \r |
| 756 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData with an\r |
| 757 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r |
| 758 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r |
| 759 | alignment remaining to satisfy the request, then NULL is returned.\r |
| 760 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 761 | \r |
| 762 | @param AllocationSize The number of bytes to allocate.\r |
| 763 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 764 | If Alignment is zero, then byte alignment is used.\r |
| 765 | \r |
| 766 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 767 | \r |
| 768 | **/\r |
| 769 | VOID *\r |
| 770 | EFIAPI\r |
| 771 | AllocateAlignedRuntimePool (\r |
| 772 | IN UINTN AllocationSize,\r |
| 773 | IN UINTN Alignment\r |
| 774 | )\r |
| 775 | {\r |
| 776 | return InternalAllocateAlignedPool (EfiRuntimeServicesData, AllocationSize, Alignment);\r |
| 777 | }\r |
| 778 | \r |
| 779 | /**\r |
| 780 | Allocates a buffer of type EfieservedMemoryType at a specified alignment.\r |
| 781 | \r |
| 782 | Allocates the number bytes specified by AllocationSize of type EfieservedMemoryType with an\r |
| 783 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r |
| 784 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r |
| 785 | alignment remaining to satisfy the request, then NULL is returned.\r |
| 786 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 787 | \r |
| 788 | @param AllocationSize The number of bytes to allocate.\r |
| 789 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 790 | If Alignment is zero, then byte alignment is used.\r |
| 791 | \r |
| 792 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 793 | \r |
| 794 | **/\r |
| 795 | VOID *\r |
| 796 | EFIAPI\r |
| 797 | AllocateAlignedReservedPool (\r |
| 798 | IN UINTN AllocationSize,\r |
| 799 | IN UINTN Alignment\r |
| 800 | )\r |
| 801 | {\r |
| 802 | return InternalAllocateAlignedPool (EfiReservedMemoryType, AllocationSize, Alignment);\r |
| 803 | }\r |
| 804 | \r |
| 805 | /**\r |
| 806 | Allocates and zeros a buffer of a certain pool type at a specified alignment.\r |
| 807 | \r |
| 808 | Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment\r |
| 809 | specified by Alignment, clears the buffer with zeros, and returns a pointer to the allocated\r |
| 810 | buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there is not\r |
| 811 | enough memory at the specified alignment remaining to satisfy the request, then NULL is returned.\r |
| 812 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 813 | \r |
| 814 | @param PoolType The type of pool to allocate.\r |
| 815 | @param AllocationSize The number of bytes to allocate.\r |
| 816 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 817 | If Alignment is zero, then byte alignment is used.\r |
| 818 | \r |
| 819 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 820 | \r |
| 821 | **/\r |
| 822 | VOID *\r |
| 823 | InternalAllocateAlignedZeroPool (\r |
| 824 | IN EFI_MEMORY_TYPE PoolType,\r |
| 825 | IN UINTN AllocationSize,\r |
| 826 | IN UINTN Alignment\r |
| 827 | )\r |
| 828 | {\r |
| 829 | VOID *Memory;\r |
| 830 | \r |
| 831 | Memory = InternalAllocateAlignedPool (PoolType, AllocationSize, Alignment);\r |
| 832 | if (Memory != NULL) {\r |
| 833 | Memory = ZeroMem (Memory, AllocationSize);\r |
| 834 | }\r |
| 835 | return Memory;\r |
| 836 | }\r |
| 837 | \r |
| 838 | /**\r |
| 839 | Allocates and zeros a buffer of type EfiBootServicesData at a specified alignment.\r |
| 840 | \r |
| 841 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData with an\r |
| 842 | alignment specified by Alignment, clears the buffer with zeros, and returns a pointer to the\r |
| 843 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
| 844 | is not enough memory at the specified alignment remaining to satisfy the request, then NULL is\r |
| 845 | returned.\r |
| 846 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 847 | \r |
| 848 | @param AllocationSize The number of bytes to allocate.\r |
| 849 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 850 | If Alignment is zero, then byte alignment is used.\r |
| 851 | \r |
| 852 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 853 | \r |
| 854 | **/\r |
| 855 | VOID *\r |
| 856 | EFIAPI\r |
| 857 | AllocateAlignedZeroPool (\r |
| 858 | IN UINTN AllocationSize,\r |
| 859 | IN UINTN Alignment\r |
| 860 | )\r |
| 861 | {\r |
| 862 | VOID *Memory;\r |
| 863 | \r |
| 864 | Memory = AllocateAlignedPool (AllocationSize, Alignment);\r |
| 865 | if (Memory != NULL) {\r |
| 866 | Memory = ZeroMem (Memory, AllocationSize);\r |
| 867 | }\r |
| 868 | return Memory;\r |
| 869 | }\r |
| 870 | \r |
| 871 | /**\r |
| 872 | Allocates and zeros a buffer of type EfiRuntimeServicesData at a specified alignment.\r |
| 873 | \r |
| 874 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData with an\r |
| 875 | alignment specified by Alignment, clears the buffer with zeros, and returns a pointer to the\r |
| 876 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
| 877 | is not enough memory at the specified alignment remaining to satisfy the request, then NULL is\r |
| 878 | returned.\r |
| 879 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 880 | \r |
| 881 | @param AllocationSize The number of bytes to allocate.\r |
| 882 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 883 | If Alignment is zero, then byte alignment is used.\r |
| 884 | \r |
| 885 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 886 | \r |
| 887 | **/\r |
| 888 | VOID *\r |
| 889 | EFIAPI\r |
| 890 | AllocateAlignedRuntimeZeroPool (\r |
| 891 | IN UINTN AllocationSize,\r |
| 892 | IN UINTN Alignment\r |
| 893 | )\r |
| 894 | {\r |
| 895 | return InternalAllocateAlignedZeroPool (EfiRuntimeServicesData, AllocationSize, Alignment);\r |
| 896 | }\r |
| 897 | \r |
| 898 | /**\r |
| 899 | Allocates and zeros a buffer of type EfieservedMemoryType at a specified alignment.\r |
| 900 | \r |
| 901 | Allocates the number bytes specified by AllocationSize of type EfieservedMemoryType with an\r |
| 902 | alignment specified by Alignment, clears the buffer with zeros, and returns a pointer to the\r |
| 903 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r |
| 904 | is not enough memory at the specified alignment remaining to satisfy the request, then NULL is\r |
| 905 | returned.\r |
| 906 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 907 | \r |
| 908 | @param AllocationSize The number of bytes to allocate.\r |
| 909 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 910 | If Alignment is zero, then byte alignment is used.\r |
| 911 | \r |
| 912 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 913 | \r |
| 914 | **/\r |
| 915 | VOID *\r |
| 916 | EFIAPI\r |
| 917 | AllocateAlignedReservedZeroPool (\r |
| 918 | IN UINTN AllocationSize,\r |
| 919 | IN UINTN Alignment\r |
| 920 | )\r |
| 921 | {\r |
| 922 | return InternalAllocateAlignedZeroPool (EfiReservedMemoryType, AllocationSize, Alignment);\r |
| 923 | }\r |
| 924 | \r |
| 925 | /**\r |
| 926 | Copies a buffer to an allocated buffer of a certain pool type at a specified alignment.\r |
| 927 | \r |
| 928 | Allocates the number bytes specified by AllocationSize of a certain pool type with an alignment\r |
| 929 | specified by Alignment. The allocated buffer is returned. If AllocationSize is 0, then a valid\r |
| 930 | buffer of 0 size is returned. If there is not enough memory at the specified alignment remaining\r |
| 931 | to satisfy the request, then NULL is returned.\r |
| 932 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 933 | \r |
| 934 | @param PoolType The type of pool to allocate.\r |
| 935 | @param AllocationSize The number of bytes to allocate.\r |
| 936 | @param Buffer The buffer to copy to the allocated buffer.\r |
| 937 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 938 | If Alignment is zero, then byte alignment is used.\r |
| 939 | \r |
| 940 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 941 | \r |
| 942 | **/\r |
| 943 | VOID *\r |
| 944 | InternalAllocateAlignedCopyPool (\r |
| 945 | IN EFI_MEMORY_TYPE PoolType,\r |
| 946 | IN UINTN AllocationSize,\r |
| 947 | IN CONST VOID *Buffer,\r |
| 948 | IN UINTN Alignment\r |
| 949 | )\r |
| 950 | {\r |
| 951 | VOID *Memory;\r |
| 952 | \r |
| 953 | ASSERT (Buffer != NULL);\r |
| 954 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r |
| 955 | \r |
| 956 | Memory = InternalAllocateAlignedPool (PoolType, AllocationSize, Alignment);\r |
| 957 | if (Memory != NULL) {\r |
| 958 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r |
| 959 | }\r |
| 960 | return Memory;\r |
| 961 | }\r |
| 962 | \r |
| 963 | /**\r |
| 964 | Copies a buffer to an allocated buffer of type EfiBootServicesData at a specified alignment.\r |
| 965 | \r |
| 966 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData type with an\r |
| 967 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r |
| 968 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r |
| 969 | alignment remaining to satisfy the request, then NULL is returned.\r |
| 970 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 971 | \r |
| 972 | @param AllocationSize The number of bytes to allocate.\r |
| 973 | @param Buffer The buffer to copy to the allocated buffer.\r |
| 974 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 975 | If Alignment is zero, then byte alignment is used.\r |
| 976 | \r |
| 977 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 978 | \r |
| 979 | **/\r |
| 980 | VOID *\r |
| 981 | EFIAPI\r |
| 982 | AllocateAlignedCopyPool (\r |
| 983 | IN UINTN AllocationSize,\r |
| 984 | IN CONST VOID *Buffer,\r |
| 985 | IN UINTN Alignment\r |
| 986 | )\r |
| 987 | {\r |
| 988 | VOID *Memory;\r |
| 989 | \r |
| 990 | ASSERT (Buffer != NULL);\r |
| 991 | ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));\r |
| 992 | \r |
| 993 | Memory = AllocateAlignedPool (AllocationSize, Alignment);\r |
| 994 | if (Memory != NULL) {\r |
| 995 | Memory = CopyMem (Memory, Buffer, AllocationSize);\r |
| 996 | }\r |
| 997 | return Memory;\r |
| 998 | }\r |
| 999 | \r |
| 1000 | /**\r |
| 1001 | Copies a buffer to an allocated buffer of type EfiRuntimeServicesData at a specified alignment.\r |
| 1002 | \r |
| 1003 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData type with an\r |
| 1004 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r |
| 1005 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r |
| 1006 | alignment remaining to satisfy the request, then NULL is returned.\r |
| 1007 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 1008 | \r |
| 1009 | @param AllocationSize The number of bytes to allocate.\r |
| 1010 | @param Buffer The buffer to copy to the allocated buffer.\r |
| 1011 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 1012 | If Alignment is zero, then byte alignment is used.\r |
| 1013 | \r |
| 1014 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 1015 | \r |
| 1016 | **/\r |
| 1017 | VOID *\r |
| 1018 | EFIAPI\r |
| 1019 | AllocateAlignedRuntimeCopyPool (\r |
| 1020 | IN UINTN AllocationSize,\r |
| 1021 | IN CONST VOID *Buffer,\r |
| 1022 | IN UINTN Alignment\r |
| 1023 | )\r |
| 1024 | {\r |
| 1025 | return InternalAllocateAlignedCopyPool (EfiRuntimeServicesData, AllocationSize, Buffer, Alignment);\r |
| 1026 | }\r |
| 1027 | \r |
| 1028 | /**\r |
| 1029 | Copies a buffer to an allocated buffer of type EfiReservedMemoryType at a specified alignment.\r |
| 1030 | \r |
| 1031 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType type with an\r |
| 1032 | alignment specified by Alignment. The allocated buffer is returned. If AllocationSize is 0,\r |
| 1033 | then a valid buffer of 0 size is returned. If there is not enough memory at the specified\r |
| 1034 | alignment remaining to satisfy the request, then NULL is returned.\r |
| 1035 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
| 1036 | \r |
| 1037 | @param AllocationSize The number of bytes to allocate.\r |
| 1038 | @param Buffer The buffer to copy to the allocated buffer.\r |
| 1039 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r |
| 1040 | If Alignment is zero, then byte alignment is used.\r |
| 1041 | \r |
| 1042 | @return A pointer to the allocated buffer or NULL if allocation fails.\r |
| 1043 | \r |
| 1044 | **/\r |
| 1045 | VOID *\r |
| 1046 | EFIAPI\r |
| 1047 | AllocateAlignedReservedCopyPool (\r |
| 1048 | IN UINTN AllocationSize,\r |
| 1049 | IN CONST VOID *Buffer,\r |
| 1050 | IN UINTN Alignment\r |
| 1051 | )\r |
| 1052 | {\r |
| 1053 | return InternalAllocateAlignedCopyPool (EfiReservedMemoryType, AllocationSize, Buffer, Alignment);\r |
| 1054 | }\r |
| 1055 | \r |
| 1056 | /**\r |
| 1057 | Frees a buffer that was previously allocated with one of the aligned pool allocation functions \r |
| 1058 | in the Memory Allocation Library.\r |
| 1059 | \r |
| 1060 | Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the\r |
| 1061 | aligned pool allocation services of the Memory Allocation Library.\r |
| 1062 | If Buffer was not allocated with an aligned pool allocation function in the Memory Allocation\r |
| 1063 | Library, then ASSERT().\r |
| 1064 | \r |
| 1065 | @param Buffer Pointer to the buffer to free.\r |
| 1066 | \r |
| 1067 | **/\r |
| 1068 | VOID\r |
| 1069 | EFIAPI\r |
| 1070 | FreeAlignedPool (\r |
| 1071 | IN VOID *Buffer\r |
| 1072 | )\r |
| 1073 | {\r |
| 1074 | //\r |
| 1075 | // PEI phase does not support to free pool, so leave it as NOP.\r |
| 1076 | //\r |
| 1077 | }\r |
| 7d582d6b |
1078 | \r |
| 1079 | \r |
| 1080 | VOID\r |
| 1081 | EFIAPI\r |
| 1082 | SafeFreePool (\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 |
| 1090 | \r |
projects / mirror_edk2.git / blame