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