| 878ddf1f |
1 | /*++\r |
| 2 | \r |
| 78bd039b |
3 | Copyright (c) 2007, Intel Corporation \r |
| 878ddf1f |
4 | All rights reserved. This program and the accompanying materials \r |
| 5 | are licensed and made available under the terms and conditions of the BSD License \r |
| 6 | which accompanies this distribution. The full text of the license may be found at \r |
| 7 | http://opensource.org/licenses/bsd-license.php \r |
| 8 | \r |
| 9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
| 10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
| 11 | \r |
| 12 | Module Name:\r |
| 13 | \r |
| 14 | page.c\r |
| 15 | \r |
| 16 | Abstract:\r |
| 17 | \r |
| 18 | EFI Memory page management\r |
| 19 | \r |
| 20 | \r |
| 21 | Revision History\r |
| 22 | \r |
| 23 | --*/\r |
| 24 | \r |
| 25 | #include <DxeMain.h>\r |
| 26 | \r |
| 27 | #define EFI_DEFAULT_PAGE_ALLOCATION_ALIGNMENT (EFI_PAGE_SIZE)\r |
| 28 | \r |
| 29 | //\r |
| 30 | // Entry for tracking the memory regions for each memory type to help cooalese like memory types\r |
| 31 | //\r |
| 32 | typedef struct {\r |
| 33 | EFI_PHYSICAL_ADDRESS BaseAddress;\r |
| 34 | EFI_PHYSICAL_ADDRESS MaximumAddress;\r |
| 35 | UINT64 CurrentNumberOfPages;\r |
| 36 | UINTN InformationIndex;\r |
| 37 | } EFI_MEMORY_TYPE_STAISTICS;\r |
| 38 | \r |
| 39 | //\r |
| 40 | // MemoryMap - The current memory map\r |
| 41 | //\r |
| 42 | UINTN mMemoryMapKey = 0;\r |
| 43 | \r |
| 44 | //\r |
| 45 | // mMapStack - space to use as temp storage to build new map descriptors\r |
| 46 | // mMapDepth - depth of new descriptor stack\r |
| 47 | //\r |
| 48 | \r |
| 49 | #define MAX_MAP_DEPTH 6\r |
| 50 | UINTN mMapDepth = 0;\r |
| 51 | MEMORY_MAP mMapStack[MAX_MAP_DEPTH];\r |
| 52 | UINTN mFreeMapStack = 0;\r |
| 78bd039b |
53 | //\r |
| 54 | // This list maintain the free memory map list\r |
| 55 | //\r |
| 56 | LIST_ENTRY mFreeMemoryMapEntryList = INITIALIZE_LIST_HEAD_VARIABLE (mFreeMemoryMapEntryList);\r |
| 878ddf1f |
57 | BOOLEAN mMemoryTypeInformationInitialized = FALSE;\r |
| 58 | \r |
| 59 | EFI_MEMORY_TYPE_STAISTICS mMemoryTypeStatistics[EfiMaxMemoryType + 1] = {\r |
| 60 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiReservedMemoryType\r |
| 61 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiLoaderCode\r |
| 62 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiLoaderData\r |
| 63 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiBootServicesCode\r |
| 64 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiBootServicesData\r |
| 65 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiRuntimeServicesCode\r |
| 66 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiRuntimeServicesData\r |
| 67 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiConventionalMemory\r |
| 68 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiUnusableMemory\r |
| 69 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiACPIReclaimMemory\r |
| 70 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiACPIMemoryNVS\r |
| 71 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiMemoryMappedIO\r |
| 72 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiMemoryMappedIOPortSpace\r |
| 73 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiPalCode\r |
| 74 | { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType } // EfiMaxMemoryType\r |
| 75 | };\r |
| 76 | \r |
| 77 | EFI_PHYSICAL_ADDRESS mDefaultMaximumAddress = EFI_MAX_ADDRESS;\r |
| 78 | \r |
| 79 | EFI_MEMORY_TYPE_INFORMATION gMemoryTypeInformation[EfiMaxMemoryType + 1] = {\r |
| 80 | { EfiReservedMemoryType, 0 },\r |
| 81 | { EfiLoaderCode, 0 },\r |
| 82 | { EfiLoaderData, 0 },\r |
| 83 | { EfiBootServicesCode, 0 },\r |
| 84 | { EfiBootServicesData, 0 },\r |
| 85 | { EfiRuntimeServicesCode, 0 },\r |
| 86 | { EfiRuntimeServicesData, 0 },\r |
| 87 | { EfiConventionalMemory, 0 },\r |
| 88 | { EfiUnusableMemory, 0 },\r |
| 89 | { EfiACPIReclaimMemory, 0 },\r |
| 90 | { EfiACPIMemoryNVS, 0 },\r |
| 91 | { EfiMemoryMappedIO, 0 },\r |
| 92 | { EfiMemoryMappedIOPortSpace, 0 },\r |
| 93 | { EfiPalCode, 0 },\r |
| 94 | { EfiMaxMemoryType, 0 }\r |
| 95 | };\r |
| 96 | \r |
| 97 | //\r |
| 98 | // Internal prototypes\r |
| 99 | //\r |
| 92dda53e |
100 | STATIC\r |
| 878ddf1f |
101 | VOID \r |
| 102 | PromoteMemoryResource (\r |
| 103 | VOID\r |
| 104 | );\r |
| 105 | \r |
| 106 | STATIC\r |
| 107 | VOID\r |
| 108 | CoreAddRange (\r |
| 109 | IN EFI_MEMORY_TYPE Type,\r |
| 110 | IN EFI_PHYSICAL_ADDRESS Start,\r |
| 111 | IN EFI_PHYSICAL_ADDRESS End,\r |
| 112 | IN UINT64 Attribute\r |
| 113 | );\r |
| 114 | \r |
| 115 | STATIC\r |
| 116 | VOID\r |
| 117 | CoreFreeMemoryMapStack (\r |
| 118 | VOID\r |
| 119 | );\r |
| 120 | \r |
| 121 | STATIC\r |
| 122 | EFI_STATUS\r |
| 123 | CoreConvertPages (\r |
| 124 | IN UINT64 Start,\r |
| 125 | IN UINT64 NumberOfPages,\r |
| 126 | IN EFI_MEMORY_TYPE NewType\r |
| 127 | );\r |
| 128 | \r |
| 129 | STATIC\r |
| 130 | VOID\r |
| 131 | RemoveMemoryMapEntry (\r |
| 132 | MEMORY_MAP *Entry\r |
| 133 | );\r |
| 78bd039b |
134 | \r |
| 135 | STATIC\r |
| 136 | MEMORY_MAP *\r |
| 15f83a88 |
137 | AllocateMemoryMapEntry (\r |
| 138 | VOID\r |
| 139 | );\r |
| 78bd039b |
140 | \r |
| 878ddf1f |
141 | VOID\r |
| 142 | CoreAcquireMemoryLock (\r |
| 143 | VOID\r |
| 144 | )\r |
| 145 | /*++\r |
| 146 | \r |
| 147 | Routine Description:\r |
| 148 | \r |
| 149 | Enter critical section by gaining lock on gMemoryLock\r |
| 150 | \r |
| 151 | Arguments:\r |
| 152 | \r |
| 153 | None\r |
| 154 | \r |
| 155 | Returns:\r |
| 156 | \r |
| 157 | None\r |
| 158 | \r |
| 159 | --*/\r |
| 160 | {\r |
| 161 | CoreAcquireLock (&gMemoryLock);\r |
| 162 | }\r |
| 163 | \r |
| 164 | \r |
| 165 | VOID\r |
| 166 | CoreReleaseMemoryLock (\r |
| 167 | VOID\r |
| 168 | )\r |
| 169 | /*++\r |
| 170 | \r |
| 171 | Routine Description:\r |
| 172 | \r |
| 173 | Exit critical section by releasing lock on gMemoryLock\r |
| 174 | \r |
| 175 | Arguments:\r |
| 176 | \r |
| 177 | None\r |
| 178 | \r |
| 179 | Returns:\r |
| 180 | \r |
| 181 | None\r |
| 182 | \r |
| 183 | --*/\r |
| 184 | {\r |
| 185 | CoreReleaseLock (&gMemoryLock);\r |
| 186 | }\r |
| 187 | \r |
| 92dda53e |
188 | STATIC\r |
| 878ddf1f |
189 | VOID\r |
| 190 | PromoteMemoryResource (\r |
| 191 | VOID\r |
| 192 | )\r |
| 193 | /*++\r |
| 194 | \r |
| 195 | Routine Description:\r |
| 196 | \r |
| 197 | Find untested but initialized memory regions in GCD map and convert them to be DXE allocatable.\r |
| 198 | \r |
| 199 | Arguments:\r |
| 200 | \r |
| 201 | None\r |
| 202 | \r |
| 203 | Returns:\r |
| 204 | \r |
| 205 | None\r |
| 206 | \r |
| 207 | --*/\r |
| 208 | {\r |
| 209 | LIST_ENTRY *Link;\r |
| 210 | EFI_GCD_MAP_ENTRY *Entry;\r |
| 211 | \r |
| 212 | DEBUG ((EFI_D_ERROR | EFI_D_PAGE, "Promote the memory resource\n"));\r |
| 213 | \r |
| 214 | CoreAcquireGcdMemoryLock ();\r |
| 215 | \r |
| 216 | Link = mGcdMemorySpaceMap.ForwardLink;\r |
| 217 | while (Link != &mGcdMemorySpaceMap) {\r |
| 218 | \r |
| 219 | Entry = CR (Link, EFI_GCD_MAP_ENTRY, Link, EFI_GCD_MAP_SIGNATURE);\r |
| 220 | \r |
| 221 | if (Entry->GcdMemoryType == EfiGcdMemoryTypeReserved &&\r |
| 222 | Entry->EndAddress < EFI_MAX_ADDRESS &&\r |
| 223 | (Entry->Capabilities & (EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED | EFI_MEMORY_TESTED)) ==\r |
| 224 | (EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED)) {\r |
| 225 | //\r |
| 226 | // Update the GCD map\r |
| 227 | //\r |
| 228 | Entry->GcdMemoryType = EfiGcdMemoryTypeSystemMemory;\r |
| 229 | Entry->Capabilities |= EFI_MEMORY_TESTED;\r |
| 230 | Entry->ImageHandle = gDxeCoreImageHandle;\r |
| 231 | Entry->DeviceHandle = NULL;\r |
| 232 | \r |
| 233 | //\r |
| 234 | // Add to allocable system memory resource\r |
| 235 | // \r |
| 236 | \r |
| 237 | CoreAddRange (\r |
| 238 | EfiConventionalMemory, \r |
| 239 | Entry->BaseAddress, \r |
| 240 | Entry->EndAddress, \r |
| 241 | Entry->Capabilities & ~(EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED | EFI_MEMORY_TESTED | EFI_MEMORY_RUNTIME)\r |
| 242 | );\r |
| 243 | CoreFreeMemoryMapStack ();\r |
| 244 | \r |
| 245 | }\r |
| 246 | \r |
| 247 | Link = Link->ForwardLink;\r |
| 248 | }\r |
| 249 | \r |
| 250 | CoreReleaseGcdMemoryLock ();\r |
| 251 | \r |
| 252 | return;\r |
| 253 | }\r |
| 254 | \r |
| 255 | VOID\r |
| 256 | CoreAddMemoryDescriptor (\r |
| 257 | IN EFI_MEMORY_TYPE Type,\r |
| 258 | IN EFI_PHYSICAL_ADDRESS Start,\r |
| 259 | IN UINT64 NumberOfPages,\r |
| 260 | IN UINT64 Attribute\r |
| 261 | )\r |
| 262 | /*++\r |
| 263 | \r |
| 264 | Routine Description:\r |
| 265 | \r |
| 266 | Called to initialize the memory map and add descriptors to\r |
| 267 | the current descriptor list.\r |
| 268 | \r |
| 269 | The first descriptor that is added must be general usable\r |
| 270 | memory as the addition allocates heap.\r |
| 271 | \r |
| 272 | Arguments:\r |
| 273 | \r |
| 274 | Type - The type of memory to add\r |
| 275 | \r |
| 276 | Start - The starting address in the memory range\r |
| 277 | Must be page aligned\r |
| 278 | \r |
| 279 | NumberOfPages - The number of pages in the range\r |
| 280 | \r |
| 281 | Attribute - Attributes of the memory to add\r |
| 282 | \r |
| 283 | Returns:\r |
| 284 | \r |
| 285 | None. The range is added to the memory map\r |
| 286 | \r |
| 287 | --*/\r |
| 288 | {\r |
| 289 | EFI_PHYSICAL_ADDRESS End;\r |
| 290 | EFI_STATUS Status;\r |
| 291 | UINTN Index;\r |
| 292 | UINTN FreeIndex;\r |
| 293 | \r |
| 294 | if ((Start & EFI_PAGE_MASK) != 0) {\r |
| 295 | return;\r |
| 296 | }\r |
| 297 | \r |
| 298 | if (Type >= EfiMaxMemoryType && Type <= 0x7fffffff) {\r |
| 299 | return;\r |
| 300 | }\r |
| 301 | \r |
| 302 | CoreAcquireMemoryLock ();\r |
| 303 | End = Start + LShiftU64 (NumberOfPages, EFI_PAGE_SHIFT) - 1;\r |
| 304 | CoreAddRange (Type, Start, End, Attribute);\r |
| 305 | CoreFreeMemoryMapStack ();\r |
| 306 | CoreReleaseMemoryLock ();\r |
| 307 | \r |
| 308 | //\r |
| 309 | // Check to see if the statistics for the different memory types have already been established\r |
| 310 | //\r |
| 311 | if (mMemoryTypeInformationInitialized) {\r |
| 312 | return;\r |
| 313 | }\r |
| 314 | \r |
| 315 | //\r |
| 316 | // Loop through each memory type in the order specified by the gMemoryTypeInformation[] array\r |
| 317 | //\r |
| 318 | for (Index = 0; gMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {\r |
| 319 | //\r |
| 320 | // Make sure the memory type in the gMemoryTypeInformation[] array is valid\r |
| 321 | //\r |
| 1cc8ee78 |
322 | Type = (EFI_MEMORY_TYPE) (gMemoryTypeInformation[Index].Type);\r |
| 878ddf1f |
323 | if (Type < 0 || Type > EfiMaxMemoryType) {\r |
| 324 | continue;\r |
| 325 | }\r |
| 326 | \r |
| 327 | if (gMemoryTypeInformation[Index].NumberOfPages != 0) {\r |
| 328 | //\r |
| 329 | // Allocate pages for the current memory type from the top of available memory\r |
| 330 | //\r |
| 331 | Status = CoreAllocatePages (\r |
| 332 | AllocateAnyPages,\r |
| 333 | Type,\r |
| 334 | gMemoryTypeInformation[Index].NumberOfPages,\r |
| 335 | &mMemoryTypeStatistics[Type].BaseAddress\r |
| 336 | );\r |
| 337 | if (EFI_ERROR (Status)) {\r |
| 338 | //\r |
| 339 | // If an error occurs allocating the pages for the current memory type, then \r |
| 340 | // free all the pages allocates for the previous memory types and return. This\r |
| 341 | // operation with be retied when/if more memory is added to the system\r |
| 342 | //\r |
| 343 | for (FreeIndex = 0; FreeIndex < Index; FreeIndex++) {\r |
| 344 | //\r |
| 345 | // Make sure the memory type in the gMemoryTypeInformation[] array is valid\r |
| 346 | //\r |
| 1cc8ee78 |
347 | Type = (EFI_MEMORY_TYPE) (gMemoryTypeInformation[FreeIndex].Type);\r |
| 878ddf1f |
348 | if (Type < 0 || Type > EfiMaxMemoryType) {\r |
| 349 | continue;\r |
| 350 | }\r |
| 351 | \r |
| 352 | if (gMemoryTypeInformation[FreeIndex].NumberOfPages != 0) {\r |
| 353 | CoreFreePages (\r |
| 354 | mMemoryTypeStatistics[Type].BaseAddress, \r |
| 355 | gMemoryTypeInformation[FreeIndex].NumberOfPages\r |
| 356 | );\r |
| 357 | mMemoryTypeStatistics[Type].BaseAddress = 0;\r |
| 358 | mMemoryTypeStatistics[Type].MaximumAddress = EFI_MAX_ADDRESS;\r |
| 359 | }\r |
| 360 | }\r |
| 361 | return;\r |
| 362 | }\r |
| 363 | \r |
| 364 | //\r |
| 365 | // Compute the address at the top of the current statistics\r |
| 366 | //\r |
| 367 | mMemoryTypeStatistics[Type].MaximumAddress = \r |
| 368 | mMemoryTypeStatistics[Type].BaseAddress + \r |
| 369 | LShiftU64 (gMemoryTypeInformation[Index].NumberOfPages, EFI_PAGE_SHIFT) - 1;\r |
| 370 | \r |
| 371 | //\r |
| 372 | // If the current base address is the lowest address so far, then update the default \r |
| 373 | // maximum address\r |
| 374 | //\r |
| 375 | if (mMemoryTypeStatistics[Type].BaseAddress < mDefaultMaximumAddress) {\r |
| 376 | mDefaultMaximumAddress = mMemoryTypeStatistics[Type].BaseAddress - 1;\r |
| 377 | }\r |
| 378 | }\r |
| 379 | }\r |
| 380 | \r |
| 381 | //\r |
| 382 | // There was enough system memory for all the the memory types were allocated. So,\r |
| 383 | // those memory areas can be freed for future allocations, and all future memory\r |
| 384 | // allocations can occur within their respective bins\r |
| 385 | //\r |
| 386 | for (Index = 0; gMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {\r |
| 387 | //\r |
| 388 | // Make sure the memory type in the gMemoryTypeInformation[] array is valid\r |
| 389 | //\r |
| 1cc8ee78 |
390 | Type = (EFI_MEMORY_TYPE) (gMemoryTypeInformation[Index].Type);\r |
| 878ddf1f |
391 | if (Type < 0 || Type > EfiMaxMemoryType) {\r |
| 392 | continue;\r |
| 393 | }\r |
| 394 | \r |
| 395 | if (gMemoryTypeInformation[Index].NumberOfPages != 0) {\r |
| 396 | CoreFreePages (\r |
| 397 | mMemoryTypeStatistics[Type].BaseAddress, \r |
| 398 | gMemoryTypeInformation[Index].NumberOfPages\r |
| 399 | );\r |
| 400 | gMemoryTypeInformation[Index].NumberOfPages = 0;\r |
| 401 | }\r |
| 402 | }\r |
| 403 | \r |
| 404 | //\r |
| 405 | // If the number of pages reserved for a memory type is 0, then all allocations for that type\r |
| 406 | // should be in the default range.\r |
| 407 | //\r |
| 1cc8ee78 |
408 | for (Type = (EFI_MEMORY_TYPE) 0; Type < EfiMaxMemoryType; Type++) {\r |
| 878ddf1f |
409 | for (Index = 0; gMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {\r |
| 410 | if (Type == (EFI_MEMORY_TYPE)gMemoryTypeInformation[Index].Type) {\r |
| 411 | mMemoryTypeStatistics[Type].InformationIndex = Index;\r |
| 412 | }\r |
| 413 | }\r |
| 414 | mMemoryTypeStatistics[Type].CurrentNumberOfPages = 0;\r |
| 415 | if (mMemoryTypeStatistics[Type].MaximumAddress == EFI_MAX_ADDRESS) {\r |
| 416 | mMemoryTypeStatistics[Type].MaximumAddress = mDefaultMaximumAddress;\r |
| 417 | }\r |
| 418 | }\r |
| 419 | \r |
| 420 | mMemoryTypeInformationInitialized = TRUE;\r |
| 421 | }\r |
| 422 | \r |
| 423 | \r |
| 424 | STATIC\r |
| 425 | VOID\r |
| 426 | CoreAddRange (\r |
| 427 | IN EFI_MEMORY_TYPE Type,\r |
| 428 | IN EFI_PHYSICAL_ADDRESS Start,\r |
| 429 | IN EFI_PHYSICAL_ADDRESS End,\r |
| 430 | IN UINT64 Attribute\r |
| 431 | )\r |
| 432 | /*++\r |
| 433 | \r |
| 434 | Routine Description:\r |
| 435 | \r |
| 436 | Internal function. Adds a ranges to the memory map.\r |
| 437 | The range must not already exist in the map.\r |
| 438 | \r |
| 439 | Arguments:\r |
| 440 | \r |
| 441 | Type - The type of memory range to add\r |
| 442 | \r |
| 443 | Start - The starting address in the memory range\r |
| 444 | Must be paged aligned\r |
| 445 | \r |
| 446 | End - The last address in the range\r |
| 447 | Must be the last byte of a page\r |
| 448 | \r |
| 449 | Attribute - The attributes of the memory range to add\r |
| 450 | \r |
| 451 | Returns:\r |
| 452 | \r |
| 453 | None. The range is added to the memory map\r |
| 454 | \r |
| 455 | --*/\r |
| 456 | {\r |
| 457 | LIST_ENTRY *Link;\r |
| 458 | MEMORY_MAP *Entry;\r |
| 459 | \r |
| 460 | ASSERT ((Start & EFI_PAGE_MASK) == 0);\r |
| 461 | ASSERT (End > Start) ;\r |
| 462 | \r |
| 463 | ASSERT_LOCKED (&gMemoryLock);\r |
| 464 | \r |
| 465 | DEBUG ((EFI_D_PAGE, "AddRange: %lx-%lx to %d\n", Start, End, Type));\r |
| 466 | \r |
| 467 | //\r |
| 468 | // Memory map being altered so updated key\r |
| 469 | //\r |
| 470 | mMemoryMapKey += 1;\r |
| 471 | \r |
| 472 | //\r |
| 473 | // UEFI 2.0 added an event group for notificaiton on memory map changes.\r |
| 474 | // So we need to signal this Event Group every time the memory map changes.\r |
| 475 | // If we are in EFI 1.10 compatability mode no event groups will be \r |
| 476 | // found and nothing will happen we we call this function. These events\r |
| 477 | // will get signaled but since a lock is held around the call to this \r |
| 478 | // function the notificaiton events will only be called after this funciton\r |
| 479 | // returns and the lock is released.\r |
| 480 | //\r |
| 481 | CoreNotifySignalList (&gEfiEventMemoryMapChangeGuid);\r |
| 482 | \r |
| 483 | //\r |
| 484 | // Look for adjoining memory descriptor\r |
| 485 | //\r |
| 486 | \r |
| 487 | // Two memory descriptors can only be merged if they have the same Type\r |
| 488 | // and the same Attribute\r |
| 489 | //\r |
| 490 | \r |
| 491 | Link = gMemoryMap.ForwardLink;\r |
| 492 | while (Link != &gMemoryMap) {\r |
| 493 | Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r |
| 494 | Link = Link->ForwardLink;\r |
| 495 | \r |
| 496 | if (Entry->Type != Type) {\r |
| 497 | continue;\r |
| 498 | }\r |
| 499 | \r |
| 500 | if (Entry->Attribute != Attribute) {\r |
| 501 | continue;\r |
| 502 | }\r |
| 503 | \r |
| 504 | if (Entry->End + 1 == Start) {\r |
| 505 | \r |
| 506 | Start = Entry->Start;\r |
| 507 | RemoveMemoryMapEntry (Entry);\r |
| 508 | \r |
| 509 | } else if (Entry->Start == End + 1) {\r |
| 510 | \r |
| 511 | End = Entry->End;\r |
| 512 | RemoveMemoryMapEntry (Entry);\r |
| 513 | }\r |
| 514 | }\r |
| 515 | \r |
| 516 | //\r |
| 517 | // Add descriptor \r |
| 518 | //\r |
| 519 | \r |
| 520 | mMapStack[mMapDepth].Signature = MEMORY_MAP_SIGNATURE;\r |
| 78bd039b |
521 | mMapStack[mMapDepth].FromPages = FALSE;\r |
| 878ddf1f |
522 | mMapStack[mMapDepth].Type = Type;\r |
| 523 | mMapStack[mMapDepth].Start = Start;\r |
| 524 | mMapStack[mMapDepth].End = End;\r |
| 525 | mMapStack[mMapDepth].VirtualStart = 0;\r |
| 526 | mMapStack[mMapDepth].Attribute = Attribute;\r |
| 527 | InsertTailList (&gMemoryMap, &mMapStack[mMapDepth].Link);\r |
| 528 | \r |
| 529 | mMapDepth += 1;\r |
| 530 | ASSERT (mMapDepth < MAX_MAP_DEPTH);\r |
| 531 | \r |
| 532 | return ;\r |
| 533 | }\r |
| 534 | \r |
| 535 | STATIC\r |
| 536 | VOID\r |
| 537 | CoreFreeMemoryMapStack (\r |
| 538 | VOID\r |
| 539 | )\r |
| 540 | /*++\r |
| 541 | \r |
| 542 | Routine Description:\r |
| 543 | \r |
| 544 | Internal function. Moves any memory descriptors that are on the\r |
| 545 | temporary descriptor stack to heap.\r |
| 546 | \r |
| 547 | Arguments:\r |
| 548 | \r |
| 549 | None\r |
| 550 | \r |
| 551 | Returns:\r |
| 552 | \r |
| 553 | None\r |
| 554 | \r |
| 555 | --*/\r |
| 556 | {\r |
| 557 | MEMORY_MAP *Entry;\r |
| 558 | MEMORY_MAP *Entry2;\r |
| 559 | LIST_ENTRY *Link2;\r |
| 560 | \r |
| 561 | ASSERT_LOCKED (&gMemoryLock);\r |
| 562 | \r |
| 563 | //\r |
| 564 | // If already freeing the map stack, then return\r |
| 565 | //\r |
| 566 | if (mFreeMapStack) {\r |
| 567 | return ;\r |
| 568 | }\r |
| 569 | \r |
| 570 | //\r |
| 571 | // Move the temporary memory descriptor stack into pool\r |
| 572 | //\r |
| 573 | mFreeMapStack += 1;\r |
| 574 | \r |
| 575 | while (mMapDepth) {\r |
| 878ddf1f |
576 | //\r |
| 78bd039b |
577 | // Deque an memory map entry from mFreeMemoryMapEntryList \r |
| 878ddf1f |
578 | //\r |
| 78bd039b |
579 | Entry = AllocateMemoryMapEntry ();\r |
| 878ddf1f |
580 | \r |
| 581 | ASSERT (Entry);\r |
| 582 | \r |
| 583 | //\r |
| 584 | // Update to proper entry\r |
| 585 | //\r |
| 586 | mMapDepth -= 1;\r |
| 587 | \r |
| 588 | if (mMapStack[mMapDepth].Link.ForwardLink != NULL) {\r |
| 589 | \r |
| 590 | //\r |
| 78bd039b |
591 | // Move this entry to general memory\r |
| 878ddf1f |
592 | //\r |
| 593 | RemoveEntryList (&mMapStack[mMapDepth].Link);\r |
| 594 | mMapStack[mMapDepth].Link.ForwardLink = NULL;\r |
| 595 | \r |
| 596 | CopyMem (Entry , &mMapStack[mMapDepth], sizeof (MEMORY_MAP));\r |
| 78bd039b |
597 | Entry->FromPages = TRUE;\r |
| 878ddf1f |
598 | \r |
| 599 | //\r |
| 600 | // Find insertion location\r |
| 601 | //\r |
| 602 | for (Link2 = gMemoryMap.ForwardLink; Link2 != &gMemoryMap; Link2 = Link2->ForwardLink) {\r |
| 603 | Entry2 = CR (Link2, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r |
| 78bd039b |
604 | if (Entry2->FromPages && Entry2->Start > Entry->Start) {\r |
| 878ddf1f |
605 | break;\r |
| 606 | }\r |
| 607 | }\r |
| 608 | \r |
| 609 | InsertTailList (Link2, &Entry->Link);\r |
| 610 | \r |
| 611 | } else {\r |
| 78bd039b |
612 | // \r |
| 613 | // This item of mMapStack[mMapDepth] has already been dequeued from gMemoryMap list,\r |
| 614 | // so here no need to move it to memory.\r |
| 878ddf1f |
615 | //\r |
| 78bd039b |
616 | InsertTailList (&mFreeMemoryMapEntryList, &Entry->Link);\r |
| 878ddf1f |
617 | }\r |
| 618 | }\r |
| 619 | \r |
| 620 | mFreeMapStack -= 1;\r |
| 621 | }\r |
| 622 | \r |
| 623 | STATIC\r |
| 624 | VOID\r |
| 625 | RemoveMemoryMapEntry (\r |
| 626 | MEMORY_MAP *Entry\r |
| 627 | )\r |
| 628 | /*++\r |
| 629 | \r |
| 630 | Routine Description:\r |
| 631 | \r |
| 632 | Internal function. Removes a descriptor entry.\r |
| 633 | \r |
| 634 | Arguments:\r |
| 635 | \r |
| 636 | Entry - The entry to remove\r |
| 637 | \r |
| 638 | Returns:\r |
| 639 | \r |
| 640 | None\r |
| 641 | \r |
| 642 | --*/\r |
| 643 | {\r |
| 644 | RemoveEntryList (&Entry->Link);\r |
| 645 | Entry->Link.ForwardLink = NULL;\r |
| 646 | \r |
| 78bd039b |
647 | if (Entry->FromPages) {\r |
| 648 | //\r |
| 649 | // Insert the free memory map descriptor to the end of mFreeMemoryMapEntryList\r |
| 650 | //\r |
| 651 | InsertTailList (&mFreeMemoryMapEntryList, &Entry->Link);\r |
| 878ddf1f |
652 | }\r |
| 653 | }\r |
| 654 | \r |
| 15f83a88 |
655 | STATIC\r |
| 78bd039b |
656 | MEMORY_MAP *\r |
| 15f83a88 |
657 | AllocateMemoryMapEntry (\r |
| 658 | VOID\r |
| 659 | )\r |
| 78bd039b |
660 | /*++\r |
| 661 | \r |
| 662 | Routine Description:\r |
| 663 | \r |
| 664 | Internal function. Deque a descriptor entry from the mFreeMemoryMapEntryList.\r |
| 665 | If the list is emtry, then allocate a new page to refuel the list. \r |
| 666 | Please Note this algorithm to allocate the memory map descriptor has a property\r |
| 667 | that the memory allocated for memory entries always grows, and will never really be freed \r |
| 668 | For example, if the current boot uses 2000 memory map entries at the maximum point, but\r |
| 669 | ends up with only 50 at the time the OS is booted, then the memory associated with the 1950 \r |
| 670 | memory map entries is still allocated from EfiBootServicesMemory. \r |
| 671 | \r |
| 672 | Arguments:\r |
| 673 | \r |
| 674 | NONE\r |
| 675 | \r |
| 676 | Returns:\r |
| 677 | \r |
| 678 | The Memory map descriptor dequed from the mFreeMemoryMapEntryList\r |
| 679 | \r |
| 680 | --*/ \r |
| 681 | {\r |
| 682 | MEMORY_MAP* FreeDescriptorEntries;\r |
| 683 | MEMORY_MAP* Entry;\r |
| 684 | UINTN Index;\r |
| 685 | \r |
| 686 | if (IsListEmpty (&mFreeMemoryMapEntryList)) {\r |
| 687 | // \r |
| 688 | // The list is empty, to allocate one page to refuel the list\r |
| 689 | //\r |
| 7b7f863b |
690 | FreeDescriptorEntries = CoreAllocatePoolPages (EfiBootServicesData, EFI_SIZE_TO_PAGES(DEFAULT_PAGE_ALLOCATION), DEFAULT_PAGE_ALLOCATION);\r |
| 78bd039b |
691 | if(FreeDescriptorEntries != NULL) {\r |
| 692 | //\r |
| 693 | // Enque the free memmory map entries into the list\r |
| 694 | //\r |
| 695 | for (Index = 0; Index< DEFAULT_PAGE_ALLOCATION / sizeof(MEMORY_MAP); Index++) {\r |
| 696 | FreeDescriptorEntries[Index].Signature = MEMORY_MAP_SIGNATURE;\r |
| 697 | InsertTailList (&mFreeMemoryMapEntryList, &FreeDescriptorEntries[Index].Link);\r |
| 698 | } \r |
| 699 | } else {\r |
| 700 | return NULL;\r |
| 701 | }\r |
| 702 | }\r |
| 703 | //\r |
| 704 | // dequeue the first descriptor from the list\r |
| 705 | //\r |
| 706 | Entry = CR (mFreeMemoryMapEntryList.ForwardLink, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r |
| 707 | RemoveEntryList (&Entry->Link);\r |
| 708 | \r |
| 709 | return Entry;\r |
| 710 | } \r |
| 878ddf1f |
711 | \r |
| 712 | STATIC\r |
| 713 | EFI_STATUS\r |
| 714 | CoreConvertPages (\r |
| 715 | IN UINT64 Start,\r |
| 716 | IN UINT64 NumberOfPages,\r |
| 717 | IN EFI_MEMORY_TYPE NewType\r |
| 718 | )\r |
| 719 | /*++\r |
| 720 | \r |
| 721 | Routine Description:\r |
| 722 | \r |
| 723 | Internal function. Converts a memory range to the specified type.\r |
| 724 | The range must exist in the memory map.\r |
| 725 | \r |
| 726 | Arguments:\r |
| 727 | \r |
| 728 | Start - The first address of the range\r |
| 729 | Must be page aligned\r |
| 730 | \r |
| 731 | NumberOfPages - The number of pages to convert\r |
| 732 | \r |
| 733 | NewType - The new type for the memory range\r |
| 734 | \r |
| 735 | Returns:\r |
| 736 | \r |
| 737 | EFI_INVALID_PARAMETER - Invalid parameter\r |
| 738 | \r |
| 739 | EFI_NOT_FOUND - Could not find a descriptor cover the specified range \r |
| 740 | or convertion not allowed.\r |
| 741 | \r |
| 742 | EFI_SUCCESS - Successfully converts the memory range to the specified type.\r |
| 743 | \r |
| 744 | --*/\r |
| 745 | {\r |
| 746 | \r |
| 747 | UINT64 NumberOfBytes;\r |
| 748 | UINT64 End;\r |
| 749 | UINT64 RangeEnd;\r |
| 750 | UINT64 Attribute;\r |
| 751 | LIST_ENTRY *Link;\r |
| 752 | MEMORY_MAP *Entry;\r |
| 753 | \r |
| 754 | Entry = NULL;\r |
| 755 | NumberOfBytes = LShiftU64 (NumberOfPages, EFI_PAGE_SHIFT);\r |
| 756 | End = Start + NumberOfBytes - 1;\r |
| 757 | \r |
| 758 | ASSERT (NumberOfPages);\r |
| 759 | ASSERT ((Start & EFI_PAGE_MASK) == 0);\r |
| 760 | ASSERT (End > Start) ;\r |
| 761 | ASSERT_LOCKED (&gMemoryLock);\r |
| 762 | \r |
| 763 | if (NumberOfPages == 0 || (Start & EFI_PAGE_MASK ) || (Start > (Start + NumberOfBytes))) {\r |
| 764 | return EFI_INVALID_PARAMETER;\r |
| 765 | }\r |
| 766 | \r |
| 767 | //\r |
| 768 | // Convert the entire range\r |
| 769 | //\r |
| 770 | \r |
| 771 | while (Start < End) {\r |
| 772 | \r |
| 773 | //\r |
| 774 | // Find the entry that the covers the range\r |
| 775 | //\r |
| 776 | for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {\r |
| 777 | Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r |
| 778 | \r |
| 779 | if (Entry->Start <= Start && Entry->End > Start) {\r |
| 780 | break;\r |
| 781 | }\r |
| 782 | }\r |
| 783 | \r |
| 784 | if (Link == &gMemoryMap) {\r |
| 785 | DEBUG ((EFI_D_ERROR | EFI_D_PAGE, "ConvertPages: failed to find range %lx - %lx\n", Start, End));\r |
| 786 | return EFI_NOT_FOUND;\r |
| 787 | }\r |
| 788 | \r |
| 789 | //\r |
| 790 | // Convert range to the end, or to the end of the descriptor\r |
| 791 | // if that's all we've got\r |
| 792 | //\r |
| 793 | RangeEnd = End;\r |
| 794 | if (Entry->End < End) {\r |
| 795 | RangeEnd = Entry->End;\r |
| 796 | }\r |
| 797 | \r |
| 798 | DEBUG ((EFI_D_PAGE, "ConvertRange: %lx-%lx to %d\n", Start, RangeEnd, NewType));\r |
| 799 | \r |
| 800 | //\r |
| 801 | // Debug code - verify conversion is allowed\r |
| 802 | //\r |
| 803 | if (!(NewType == EfiConventionalMemory ? 1 : 0) ^ (Entry->Type == EfiConventionalMemory ? 1 : 0)) {\r |
| 804 | DEBUG ((EFI_D_ERROR , "ConvertPages: Incompatible memory types\n"));\r |
| 805 | return EFI_NOT_FOUND;\r |
| 806 | } \r |
| 807 | \r |
| 808 | //\r |
| 809 | // Update counters for the number of pages allocated to each memory type\r |
| 810 | //\r |
| 811 | if (Entry->Type >= 0 && Entry->Type < EfiMaxMemoryType) {\r |
| 812 | if (Start >= mMemoryTypeStatistics[Entry->Type].BaseAddress && \r |
| 813 | Start <= mMemoryTypeStatistics[Entry->Type].MaximumAddress) {\r |
| 814 | if (NumberOfPages > mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages) {\r |
| 815 | mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages = 0;\r |
| 816 | } else {\r |
| 817 | mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages -= NumberOfPages;\r |
| 818 | }\r |
| 819 | }\r |
| 820 | }\r |
| 821 | \r |
| 822 | if (NewType >= 0 && NewType < EfiMaxMemoryType) {\r |
| 823 | if (Start >= mMemoryTypeStatistics[NewType].BaseAddress && Start <= mMemoryTypeStatistics[NewType].MaximumAddress) {\r |
| 824 | mMemoryTypeStatistics[NewType].CurrentNumberOfPages += NumberOfPages;\r |
| 825 | if (mMemoryTypeStatistics[NewType].CurrentNumberOfPages > \r |
| 826 | gMemoryTypeInformation[mMemoryTypeStatistics[NewType].InformationIndex].NumberOfPages) {\r |
| 827 | gMemoryTypeInformation[mMemoryTypeStatistics[NewType].InformationIndex].NumberOfPages = (UINT32)mMemoryTypeStatistics[NewType].CurrentNumberOfPages;\r |
| 828 | }\r |
| 829 | }\r |
| 830 | }\r |
| 831 | \r |
| 832 | //\r |
| 833 | // Pull range out of descriptor\r |
| 834 | //\r |
| 835 | if (Entry->Start == Start) {\r |
| 836 | \r |
| 837 | //\r |
| 838 | // Clip start\r |
| 839 | //\r |
| 840 | Entry->Start = RangeEnd + 1;\r |
| 841 | \r |
| 842 | } else if (Entry->End == RangeEnd) {\r |
| 843 | \r |
| 844 | //\r |
| 845 | // Clip end\r |
| 846 | //\r |
| 847 | Entry->End = Start - 1;\r |
| 848 | \r |
| 849 | } else {\r |
| 850 | \r |
| 851 | //\r |
| 852 | // Pull it out of the center, clip current\r |
| 853 | //\r |
| 854 | \r |
| 855 | //\r |
| 856 | // Add a new one\r |
| 857 | //\r |
| 858 | mMapStack[mMapDepth].Signature = MEMORY_MAP_SIGNATURE;\r |
| 78bd039b |
859 | mMapStack[mMapDepth].FromPages = FALSE;\r |
| 878ddf1f |
860 | mMapStack[mMapDepth].Type = Entry->Type;\r |
| 861 | mMapStack[mMapDepth].Start = RangeEnd+1;\r |
| 862 | mMapStack[mMapDepth].End = Entry->End;\r |
| 863 | \r |
| 864 | //\r |
| 865 | // Inherit Attribute from the Memory Descriptor that is being clipped\r |
| 866 | //\r |
| 867 | mMapStack[mMapDepth].Attribute = Entry->Attribute;\r |
| 868 | \r |
| 869 | Entry->End = Start - 1;\r |
| 870 | ASSERT (Entry->Start < Entry->End);\r |
| 871 | \r |
| 872 | Entry = &mMapStack[mMapDepth];\r |
| 873 | InsertTailList (&gMemoryMap, &Entry->Link);\r |
| 874 | \r |
| 875 | mMapDepth += 1;\r |
| 876 | ASSERT (mMapDepth < MAX_MAP_DEPTH);\r |
| 877 | }\r |
| 878 | \r |
| 879 | //\r |
| 880 | // The new range inherits the same Attribute as the Entry \r |
| 881 | //it is being cut out of\r |
| 882 | //\r |
| 883 | Attribute = Entry->Attribute;\r |
| 884 | \r |
| 885 | //\r |
| 886 | // If the descriptor is empty, then remove it from the map\r |
| 887 | //\r |
| 888 | if (Entry->Start == Entry->End + 1) {\r |
| 889 | RemoveMemoryMapEntry (Entry);\r |
| 890 | Entry = NULL;\r |
| 891 | }\r |
| 892 | \r |
| 893 | //\r |
| 894 | // Add our new range in\r |
| 895 | //\r |
| 896 | CoreAddRange (NewType, Start, RangeEnd, Attribute);\r |
| 897 | \r |
| 898 | //\r |
| 899 | // Move any map descriptor stack to general pool\r |
| 900 | //\r |
| 901 | CoreFreeMemoryMapStack ();\r |
| 902 | \r |
| 903 | //\r |
| 904 | // Bump the starting address, and convert the next range\r |
| 905 | //\r |
| 906 | Start = RangeEnd + 1;\r |
| 907 | }\r |
| 908 | \r |
| 909 | //\r |
| 910 | // Converted the whole range, done\r |
| 911 | //\r |
| 912 | \r |
| 913 | return EFI_SUCCESS;\r |
| 914 | }\r |
| 915 | \r |
| 916 | \r |
| 917 | STATIC\r |
| 918 | UINT64\r |
| 919 | CoreFindFreePagesI (\r |
| 920 | IN UINT64 MaxAddress,\r |
| 921 | IN UINT64 NumberOfPages,\r |
| 922 | IN EFI_MEMORY_TYPE NewType,\r |
| 923 | IN UINTN Alignment\r |
| 924 | )\r |
| 925 | /*++\r |
| 926 | \r |
| 927 | Routine Description:\r |
| 928 | \r |
| 929 | Internal function. Finds a consecutive free page range below\r |
| 930 | the requested address.\r |
| 931 | \r |
| 932 | Arguments:\r |
| 933 | \r |
| 934 | MaxAddress - The address that the range must be below\r |
| 935 | \r |
| 936 | NumberOfPages - Number of pages needed\r |
| 937 | \r |
| 938 | NewType - The type of memory the range is going to be turned into\r |
| 939 | \r |
| 940 | Alignment - Bits to align with\r |
| 941 | \r |
| 942 | Returns:\r |
| 943 | \r |
| 944 | The base address of the range, or 0 if the range was not found\r |
| 945 | \r |
| 946 | --*/\r |
| 947 | {\r |
| 948 | UINT64 NumberOfBytes;\r |
| 949 | UINT64 Target;\r |
| 950 | UINT64 DescStart;\r |
| 951 | UINT64 DescEnd;\r |
| 952 | UINT64 DescNumberOfBytes;\r |
| 953 | LIST_ENTRY *Link;\r |
| 954 | MEMORY_MAP *Entry;\r |
| 955 | \r |
| 956 | if ((MaxAddress < EFI_PAGE_MASK) ||(NumberOfPages == 0)) {\r |
| 957 | return 0;\r |
| 958 | }\r |
| 959 | \r |
| 960 | if ((MaxAddress & EFI_PAGE_MASK) != EFI_PAGE_MASK) {\r |
| 961 | \r |
| 962 | //\r |
| 963 | // If MaxAddress is not aligned to the end of a page\r |
| 964 | //\r |
| 965 | \r |
| 966 | //\r |
| 967 | // Change MaxAddress to be 1 page lower\r |
| 968 | //\r |
| 969 | MaxAddress -= (EFI_PAGE_MASK + 1);\r |
| 970 | \r |
| 971 | //\r |
| 972 | // Set MaxAddress to a page boundary\r |
| 973 | //\r |
| 974 | MaxAddress &= ~EFI_PAGE_MASK;\r |
| 975 | \r |
| 976 | //\r |
| 977 | // Set MaxAddress to end of the page\r |
| 978 | //\r |
| 979 | MaxAddress |= EFI_PAGE_MASK;\r |
| 980 | }\r |
| 981 | \r |
| 982 | NumberOfBytes = LShiftU64 (NumberOfPages, EFI_PAGE_SHIFT);\r |
| 983 | Target = 0;\r |
| 984 | \r |
| 985 | for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {\r |
| 986 | Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r |
| 987 | \r |
| 988 | //\r |
| 989 | // If it's not a free entry, don't bother with it\r |
| 990 | //\r |
| 991 | if (Entry->Type != EfiConventionalMemory) {\r |
| 992 | continue;\r |
| 993 | }\r |
| 994 | \r |
| 995 | DescStart = Entry->Start;\r |
| 996 | DescEnd = Entry->End;\r |
| 997 | \r |
| 998 | //\r |
| 999 | // If desc is past max allowed address, skip it\r |
| 1000 | //\r |
| 1001 | if (DescStart >= MaxAddress) {\r |
| 1002 | continue;\r |
| 1003 | }\r |
| 1004 | \r |
| 1005 | //\r |
| 1006 | // If desc ends past max allowed address, clip the end\r |
| 1007 | //\r |
| 1008 | if (DescEnd >= MaxAddress) {\r |
| 1009 | DescEnd = MaxAddress;\r |
| 1010 | }\r |
| 1011 | \r |
| 1012 | DescEnd = ((DescEnd + 1) & (~(Alignment - 1))) - 1;\r |
| 1013 | \r |
| 1014 | //\r |
| 1015 | // Compute the number of bytes we can used from this \r |
| 1016 | // descriptor, and see it's enough to satisfy the request\r |
| 1017 | //\r |
| 1018 | DescNumberOfBytes = DescEnd - DescStart + 1;\r |
| 1019 | \r |
| 1020 | if (DescNumberOfBytes >= NumberOfBytes) {\r |
| 1021 | \r |
| 1022 | //\r |
| 1023 | // If this is the best match so far remember it\r |
| 1024 | //\r |
| 1025 | if (DescEnd > Target) {\r |
| 1026 | Target = DescEnd;\r |
| 1027 | }\r |
| 1028 | }\r |
| 1029 | } \r |
| 1030 | \r |
| 1031 | //\r |
| 1032 | // If this is a grow down, adjust target to be the allocation base\r |
| 1033 | //\r |
| 1034 | Target -= NumberOfBytes - 1;\r |
| 1035 | \r |
| 1036 | //\r |
| 1037 | // If we didn't find a match, return 0\r |
| 1038 | //\r |
| 1039 | if ((Target & EFI_PAGE_MASK) != 0) {\r |
| 1040 | return 0;\r |
| 1041 | }\r |
| 1042 | \r |
| 1043 | return Target;\r |
| 1044 | }\r |
| 1045 | \r |
| 1046 | STATIC\r |
| 1047 | UINT64\r |
| 1048 | FindFreePages (\r |
| 1049 | IN UINT64 MaxAddress,\r |
| 1050 | IN UINT64 NoPages,\r |
| 1051 | IN EFI_MEMORY_TYPE NewType,\r |
| 1052 | IN UINTN Alignment\r |
| 1053 | )\r |
| 1054 | /*++\r |
| 1055 | \r |
| 1056 | Routine Description:\r |
| 1057 | \r |
| 1058 | Internal function. Finds a consecutive free page range below\r |
| 1059 | the requested address\r |
| 1060 | \r |
| 1061 | Arguments:\r |
| 1062 | \r |
| 1063 | MaxAddress - The address that the range must be below\r |
| 1064 | \r |
| 1065 | NoPages - Number of pages needed\r |
| 1066 | \r |
| 1067 | NewType - The type of memory the range is going to be turned into\r |
| 1068 | \r |
| 1069 | Alignment - Bits to align with\r |
| 1070 | \r |
| 1071 | Returns:\r |
| 1072 | \r |
| 1073 | The base address of the range, or 0 if the range was not found.\r |
| 1074 | \r |
| 1075 | --*/\r |
| 1076 | {\r |
| 1077 | UINT64 NewMaxAddress;\r |
| 1078 | UINT64 Start;\r |
| 1079 | \r |
| 1080 | NewMaxAddress = MaxAddress;\r |
| 1081 | \r |
| 1082 | if (NewType >= 0 && NewType < EfiMaxMemoryType && NewMaxAddress >= mMemoryTypeStatistics[NewType].MaximumAddress) {\r |
| 1083 | NewMaxAddress = mMemoryTypeStatistics[NewType].MaximumAddress;\r |
| 1084 | } else {\r |
| 1085 | if (NewMaxAddress > mDefaultMaximumAddress) {\r |
| 1086 | NewMaxAddress = mDefaultMaximumAddress;\r |
| 1087 | }\r |
| 1088 | }\r |
| 1089 | \r |
| 1090 | Start = CoreFindFreePagesI (NewMaxAddress, NoPages, NewType, Alignment);\r |
| 1091 | if (!Start) {\r |
| 1092 | Start = CoreFindFreePagesI (MaxAddress, NoPages, NewType, Alignment);\r |
| 1093 | if (!Start) {\r |
| 1094 | //\r |
| 1095 | // Here means there may be no enough memory to use, so try to go through\r |
| 1096 | // all the memory descript to promote the untested memory directly\r |
| 1097 | //\r |
| 1098 | PromoteMemoryResource ();\r |
| 1099 | \r |
| 1100 | //\r |
| 1101 | // Allocate memory again after the memory resource re-arranged\r |
| 1102 | //\r |
| 1103 | Start = CoreFindFreePagesI (MaxAddress, NoPages, NewType, Alignment);\r |
| 1104 | }\r |
| 1105 | }\r |
| 1106 | \r |
| 1107 | return Start;\r |
| 1108 | }\r |
| 1109 | \r |
| 1110 | \r |
| 1111 | EFI_STATUS\r |
| 1112 | EFIAPI\r |
| 1113 | CoreAllocatePages (\r |
| 1114 | IN EFI_ALLOCATE_TYPE Type,\r |
| 1115 | IN EFI_MEMORY_TYPE MemoryType,\r |
| 1116 | IN UINTN NumberOfPages,\r |
| 1117 | IN OUT EFI_PHYSICAL_ADDRESS *Memory\r |
| 1118 | )\r |
| 1119 | /*++\r |
| 1120 | \r |
| 1121 | Routine Description:\r |
| 1122 | \r |
| 1123 | Allocates pages from the memory map.\r |
| 1124 | \r |
| 1125 | Arguments:\r |
| 1126 | \r |
| 1127 | Type - The type of allocation to perform\r |
| 1128 | \r |
| 1129 | MemoryType - The type of memory to turn the allocated pages into\r |
| 1130 | \r |
| 1131 | NumberOfPages - The number of pages to allocate\r |
| 1132 | \r |
| 1133 | Memory - A pointer to receive the base allocated memory address\r |
| 1134 | \r |
| 1135 | Returns:\r |
| 1136 | \r |
| 1137 | Status. On success, Memory is filled in with the base address allocated\r |
| 1138 | \r |
| 1139 | EFI_INVALID_PARAMETER - Parameters violate checking rules defined in spec.\r |
| 1140 | \r |
| 1141 | EFI_NOT_FOUND - Could not allocate pages match the requirement.\r |
| 1142 | \r |
| 1143 | EFI_OUT_OF_RESOURCES - No enough pages to allocate.\r |
| 1144 | \r |
| 1145 | EFI_SUCCESS - Pages successfully allocated.\r |
| 1146 | \r |
| 1147 | --*/\r |
| 1148 | {\r |
| 1149 | EFI_STATUS Status;\r |
| 1150 | UINT64 Start;\r |
| 1151 | UINT64 MaxAddress;\r |
| 1152 | UINTN Alignment;\r |
| 1153 | \r |
| 1154 | if (Type < AllocateAnyPages || Type >= (UINTN) MaxAllocateType) {\r |
| 1155 | return EFI_INVALID_PARAMETER;\r |
| 1156 | }\r |
| 1157 | \r |
| 1158 | if ((MemoryType >= EfiMaxMemoryType && MemoryType <= 0x7fffffff) ||\r |
| 1159 | MemoryType == EfiConventionalMemory) {\r |
| 1160 | return EFI_INVALID_PARAMETER;\r |
| 1161 | }\r |
| 1162 | \r |
| 1163 | Alignment = EFI_DEFAULT_PAGE_ALLOCATION_ALIGNMENT;\r |
| 1164 | \r |
| 1165 | if (MemoryType == EfiACPIReclaimMemory ||\r |
| 1166 | MemoryType == EfiACPIMemoryNVS ||\r |
| 1167 | MemoryType == EfiRuntimeServicesCode ||\r |
| 1168 | MemoryType == EfiRuntimeServicesData) {\r |
| 1169 | \r |
| 1170 | Alignment = EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT;\r |
| 1171 | }\r |
| 1172 | \r |
| 1173 | if (Type == AllocateAddress) {\r |
| 1174 | if ((*Memory & (Alignment - 1)) != 0) {\r |
| 1175 | return EFI_NOT_FOUND;\r |
| 1176 | }\r |
| 1177 | }\r |
| 1178 | \r |
| 1179 | NumberOfPages += EFI_SIZE_TO_PAGES (Alignment) - 1;\r |
| 1180 | NumberOfPages &= ~(EFI_SIZE_TO_PAGES (Alignment) - 1);\r |
| 1181 | \r |
| 1182 | //\r |
| 1183 | // If this is for below a particular address, then \r |
| 1184 | //\r |
| 1185 | Start = *Memory;\r |
| 1186 | \r |
| 1187 | //\r |
| 1188 | // The max address is the max natively addressable address for the processor\r |
| 1189 | //\r |
| 1190 | MaxAddress = EFI_MAX_ADDRESS;\r |
| 1191 | \r |
| 1192 | if (Type == AllocateMaxAddress) {\r |
| 1193 | MaxAddress = Start;\r |
| 1194 | }\r |
| 1195 | \r |
| 1196 | CoreAcquireMemoryLock ();\r |
| 1197 | \r |
| 1198 | //\r |
| 1199 | // If not a specific address, then find an address to allocate\r |
| 1200 | //\r |
| 1201 | if (Type != AllocateAddress) {\r |
| 1202 | Start = FindFreePages (MaxAddress, NumberOfPages, MemoryType, Alignment);\r |
| 1203 | if (Start == 0) {\r |
| 1204 | Status = EFI_OUT_OF_RESOURCES;\r |
| 1205 | goto Done;\r |
| 1206 | }\r |
| 1207 | }\r |
| 1208 | \r |
| 1209 | //\r |
| 1210 | // Convert pages from FreeMemory to the requested type\r |
| 1211 | //\r |
| 1212 | Status = CoreConvertPages (Start, NumberOfPages, MemoryType);\r |
| 1213 | \r |
| 1214 | Done:\r |
| 1215 | CoreReleaseMemoryLock ();\r |
| 1216 | \r |
| 1217 | if (!EFI_ERROR (Status)) {\r |
| 1218 | *Memory = Start;\r |
| 1219 | }\r |
| 1220 | \r |
| 1221 | return Status;\r |
| 1222 | }\r |
| 1223 | \r |
| 1224 | \r |
| 1225 | \r |
| 1226 | \r |
| 1227 | EFI_STATUS \r |
| 1228 | EFIAPI\r |
| 1229 | CoreFreePages (\r |
| 1230 | IN EFI_PHYSICAL_ADDRESS Memory,\r |
| 1231 | IN UINTN NumberOfPages\r |
| 1232 | )\r |
| 1233 | /*++\r |
| 1234 | \r |
| 1235 | Routine Description:\r |
| 1236 | \r |
| 1237 | Frees previous allocated pages.\r |
| 1238 | \r |
| 1239 | Arguments:\r |
| 1240 | \r |
| 1241 | Memory - Base address of memory being freed\r |
| 1242 | \r |
| 1243 | NumberOfPages - The number of pages to free\r |
| 1244 | \r |
| 1245 | Returns:\r |
| 1246 | \r |
| 1247 | EFI_NOT_FOUND - Could not find the entry that covers the range\r |
| 1248 | \r |
| 1249 | EFI_INVALID_PARAMETER - Address not aligned\r |
| 1250 | \r |
| 1251 | EFI_SUCCESS -Pages successfully freed.\r |
| 1252 | \r |
| 1253 | --*/\r |
| 1254 | {\r |
| 1255 | EFI_STATUS Status;\r |
| 1256 | LIST_ENTRY *Link;\r |
| 1257 | MEMORY_MAP *Entry;\r |
| 1258 | UINTN Alignment;\r |
| 1259 | \r |
| 1260 | //\r |
| 1261 | // Free the range\r |
| 1262 | //\r |
| 1263 | CoreAcquireMemoryLock ();\r |
| 1264 | \r |
| 1265 | //\r |
| 1266 | // Find the entry that the covers the range\r |
| 1267 | //\r |
| 1268 | Entry = NULL;\r |
| 1269 | for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {\r |
| 1270 | Entry = CR(Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r |
| 1271 | if (Entry->Start <= Memory && Entry->End > Memory) {\r |
| 1272 | break;\r |
| 1273 | }\r |
| 1274 | }\r |
| 1275 | if (Link == &gMemoryMap) {\r |
| 1276 | CoreReleaseMemoryLock ();\r |
| 1277 | return EFI_NOT_FOUND;\r |
| 1278 | }\r |
| 1279 | \r |
| 1280 | Alignment = EFI_DEFAULT_PAGE_ALLOCATION_ALIGNMENT;\r |
| 1281 | \r |
| 1282 | if (Entry->Type == EfiACPIReclaimMemory ||\r |
| 1283 | Entry->Type == EfiACPIMemoryNVS ||\r |
| 1284 | Entry->Type == EfiRuntimeServicesCode ||\r |
| 1285 | Entry->Type == EfiRuntimeServicesData) {\r |
| 1286 | \r |
| 1287 | Alignment = EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT;\r |
| 1288 | \r |
| 1289 | }\r |
| 1290 | \r |
| 1291 | if ((Memory & (Alignment - 1)) != 0) {\r |
| 1292 | CoreReleaseMemoryLock ();\r |
| 1293 | return EFI_INVALID_PARAMETER;\r |
| 1294 | }\r |
| 1295 | \r |
| 1296 | NumberOfPages += EFI_SIZE_TO_PAGES (Alignment) - 1;\r |
| 1297 | NumberOfPages &= ~(EFI_SIZE_TO_PAGES (Alignment) - 1);\r |
| 1298 | \r |
| 1299 | Status = CoreConvertPages (Memory, NumberOfPages, EfiConventionalMemory);\r |
| 1300 | \r |
| 1301 | CoreReleaseMemoryLock ();\r |
| 1302 | \r |
| 1303 | if (EFI_ERROR (Status)) {\r |
| 1304 | return Status;\r |
| 1305 | }\r |
| 1306 | \r |
| 1307 | //\r |
| 1308 | // Destroy the contents\r |
| 1309 | //\r |
| 1310 | if (Memory < EFI_MAX_ADDRESS) {\r |
| 1311 | DEBUG_CLEAR_MEMORY ((VOID *)(UINTN)Memory, NumberOfPages << EFI_PAGE_SHIFT);\r |
| 1312 | }\r |
| 1313 | \r |
| 1314 | return Status;\r |
| 1315 | }\r |
| 1316 | \r |
| 1317 | \r |
| 1318 | \r |
| 1319 | EFI_STATUS\r |
| 1320 | EFIAPI\r |
| 1321 | CoreGetMemoryMap (\r |
| 1322 | IN OUT UINTN *MemoryMapSize,\r |
| 1323 | IN OUT EFI_MEMORY_DESCRIPTOR *MemoryMap,\r |
| 1324 | OUT UINTN *MapKey,\r |
| 1325 | OUT UINTN *DescriptorSize,\r |
| 1326 | OUT UINT32 *DescriptorVersion\r |
| 1327 | )\r |
| 1328 | /*++\r |
| 1329 | \r |
| 1330 | Routine Description:\r |
| 1331 | \r |
| 1332 | This function returns a copy of the current memory map. The map is an array of \r |
| 1333 | memory descriptors, each of which describes a contiguous block of memory.\r |
| 1334 | \r |
| 1335 | Arguments:\r |
| 1336 | \r |
| 1337 | MemoryMapSize - A pointer to the size, in bytes, of the MemoryMap buffer. On\r |
| 1338 | input, this is the size of the buffer allocated by the caller. \r |
| 1339 | On output, it is the size of the buffer returned by the firmware \r |
| 1340 | if the buffer was large enough, or the size of the buffer needed \r |
| 1341 | to contain the map if the buffer was too small.\r |
| 1342 | MemoryMap - A pointer to the buffer in which firmware places the current memory map.\r |
| 1343 | MapKey - A pointer to the location in which firmware returns the key for the\r |
| 1344 | current memory map.\r |
| 1345 | DescriptorSize - A pointer to the location in which firmware returns the size, in\r |
| 1346 | bytes, of an individual EFI_MEMORY_DESCRIPTOR.\r |
| 1347 | DescriptorVersion - A pointer to the location in which firmware returns the version\r |
| 1348 | number associated with the EFI_MEMORY_DESCRIPTOR.\r |
| 1349 | \r |
| 1350 | Returns:\r |
| 1351 | \r |
| 1352 | EFI_SUCCESS - The memory map was returned in the MemoryMap buffer. \r |
| 1353 | EFI_BUFFER_TOO_SMALL - The MemoryMap buffer was too small. The current buffer size\r |
| 1354 | needed to hold the memory map is returned in MemoryMapSize.\r |
| 1355 | EFI_INVALID_PARAMETER - One of the parameters has an invalid value. \r |
| 1356 | \r |
| 1357 | --*/\r |
| 1358 | {\r |
| 1359 | EFI_STATUS Status;\r |
| 1360 | UINTN Size; \r |
| 1361 | UINTN BufferSize; \r |
| 1362 | UINTN NumberOfRuntimeEntries;\r |
| 1363 | LIST_ENTRY *Link;\r |
| 1364 | MEMORY_MAP *Entry; \r |
| 1365 | EFI_GCD_MAP_ENTRY *GcdMapEntry; \r |
| 1366 | \r |
| 1367 | //\r |
| 1368 | // Make sure the parameters are valid\r |
| 1369 | //\r |
| 1370 | if (MemoryMapSize == NULL) {\r |
| 1371 | return EFI_INVALID_PARAMETER;\r |
| 1372 | }\r |
| 1373 | \r |
| 1374 | CoreAcquireGcdMemoryLock ();\r |
| 1375 | \r |
| 1376 | //\r |
| 1377 | // Count the number of Reserved and MMIO entries that are marked for runtime use\r |
| 1378 | //\r |
| 1379 | NumberOfRuntimeEntries = 0;\r |
| 1380 | for (Link = mGcdMemorySpaceMap.ForwardLink; Link != &mGcdMemorySpaceMap; Link = Link->ForwardLink) {\r |
| 1381 | GcdMapEntry = CR (Link, EFI_GCD_MAP_ENTRY, Link, EFI_GCD_MAP_SIGNATURE);\r |
| 1382 | if ((GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeReserved) ||\r |
| 1383 | (GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeMemoryMappedIo)) {\r |
| 1384 | if ((GcdMapEntry->Attributes & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) {\r |
| 1385 | NumberOfRuntimeEntries++;\r |
| 1386 | }\r |
| 1387 | }\r |
| 1388 | }\r |
| 1389 | \r |
| 1390 | Size = sizeof (EFI_MEMORY_DESCRIPTOR);\r |
| 1391 | \r |
| 1392 | //\r |
| 1393 | // Make sure Size != sizeof(EFI_MEMORY_DESCRIPTOR). This will\r |
| 1394 | // prevent people from having pointer math bugs in their code.\r |
| 1395 | // now you have to use *DescriptorSize to make things work.\r |
| 1396 | //\r |
| 1397 | Size += sizeof(UINT64) - (Size % sizeof (UINT64));\r |
| 1398 | \r |
| 1399 | if (DescriptorSize != NULL) {\r |
| 1400 | *DescriptorSize = Size;\r |
| 1401 | }\r |
| 1402 | \r |
| 1403 | if (DescriptorVersion != NULL) {\r |
| 1404 | *DescriptorVersion = EFI_MEMORY_DESCRIPTOR_VERSION;\r |
| 1405 | }\r |
| 1406 | \r |
| 1407 | CoreAcquireMemoryLock ();\r |
| 1408 | \r |
| 1409 | //\r |
| 1410 | // Compute the buffer size needed to fit the entire map\r |
| 1411 | //\r |
| 1412 | BufferSize = Size * NumberOfRuntimeEntries;\r |
| 1413 | for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {\r |
| 1414 | BufferSize += Size;\r |
| 1415 | }\r |
| 1416 | \r |
| 1417 | if (*MemoryMapSize < BufferSize) {\r |
| 1418 | Status = EFI_BUFFER_TOO_SMALL;\r |
| 1419 | goto Done;\r |
| 1420 | }\r |
| 1421 | \r |
| 1422 | if (MemoryMap == NULL) {\r |
| 1423 | Status = EFI_INVALID_PARAMETER;\r |
| 1424 | goto Done;\r |
| 1425 | }\r |
| 1426 | \r |
| 1427 | //\r |
| 1428 | // Build the map\r |
| 1429 | //\r |
| 1430 | ZeroMem (MemoryMap, Size);\r |
| 1431 | for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {\r |
| 1432 | Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r |
| 1433 | ASSERT (Entry->VirtualStart == 0);\r |
| 1434 | \r |
| 1435 | MemoryMap->Type = Entry->Type;\r |
| 1436 | MemoryMap->PhysicalStart = Entry->Start;\r |
| 1437 | MemoryMap->VirtualStart = Entry->VirtualStart;\r |
| 1438 | MemoryMap->NumberOfPages = RShiftU64 (Entry->End - Entry->Start + 1, EFI_PAGE_SHIFT);\r |
| 1439 | \r |
| 1440 | switch (Entry->Type) {\r |
| 1441 | case EfiRuntimeServicesCode:\r |
| 1442 | case EfiRuntimeServicesData:\r |
| 1443 | case EfiPalCode:\r |
| 1444 | MemoryMap->Attribute = Entry->Attribute | EFI_MEMORY_RUNTIME;\r |
| 1445 | break;\r |
| 1446 | \r |
| 1447 | default:\r |
| 1448 | MemoryMap->Attribute = Entry->Attribute;\r |
| 1449 | break;\r |
| 1450 | }\r |
| 1451 | \r |
| 1452 | MemoryMap = NextMemoryDescriptor (MemoryMap, Size);\r |
| 1453 | }\r |
| 1454 | \r |
| 1455 | for (Link = mGcdMemorySpaceMap.ForwardLink; Link != &mGcdMemorySpaceMap; Link = Link->ForwardLink) {\r |
| 1456 | GcdMapEntry = CR (Link, EFI_GCD_MAP_ENTRY, Link, EFI_GCD_MAP_SIGNATURE);\r |
| 1457 | if ((GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeReserved) ||\r |
| 1458 | (GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeMemoryMappedIo)) {\r |
| 1459 | if ((GcdMapEntry->Attributes & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) {\r |
| 1460 | \r |
| 1461 | MemoryMap->PhysicalStart = GcdMapEntry->BaseAddress;\r |
| 1462 | MemoryMap->VirtualStart = 0;\r |
| 3114b334 |
1463 | MemoryMap->NumberOfPages = RShiftU64 ((GcdMapEntry->EndAddress - GcdMapEntry->BaseAddress + 1), EFI_PAGE_SHIFT);\r |
| 878ddf1f |
1464 | MemoryMap->Attribute = GcdMapEntry->Attributes & ~EFI_MEMORY_PORT_IO;\r |
| 1465 | \r |
| 1466 | if (GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeReserved) {\r |
| 1467 | MemoryMap->Type = EfiReservedMemoryType;\r |
| 1468 | } else if (GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeMemoryMappedIo) {\r |
| 1469 | if ((GcdMapEntry->Attributes & EFI_MEMORY_PORT_IO) == EFI_MEMORY_PORT_IO) {\r |
| 1470 | MemoryMap->Type = EfiMemoryMappedIOPortSpace;\r |
| 1471 | } else {\r |
| 1472 | MemoryMap->Type = EfiMemoryMappedIO;\r |
| 1473 | }\r |
| 1474 | }\r |
| 1475 | \r |
| 1476 | MemoryMap = NextMemoryDescriptor (MemoryMap, Size);\r |
| 1477 | }\r |
| 1478 | }\r |
| 1479 | }\r |
| 1480 | \r |
| 1481 | Status = EFI_SUCCESS;\r |
| 1482 | \r |
| 1483 | Done:\r |
| 1484 | \r |
| 1485 | CoreReleaseMemoryLock ();\r |
| 1486 | \r |
| 1487 | CoreReleaseGcdMemoryLock ();\r |
| 1488 | \r |
| 1489 | // \r |
| 1490 | // Update the map key finally \r |
| 1491 | // \r |
| 1492 | if (MapKey != NULL) {\r |
| 1493 | *MapKey = mMemoryMapKey;\r |
| 1494 | }\r |
| 1495 | \r |
| 1496 | *MemoryMapSize = BufferSize;\r |
| 1497 | \r |
| 1498 | return Status;\r |
| 1499 | }\r |
| 1500 | \r |
| 1501 | VOID *\r |
| 1502 | CoreAllocatePoolPages (\r |
| 1503 | IN EFI_MEMORY_TYPE PoolType,\r |
| 1504 | IN UINTN NumberOfPages,\r |
| 1505 | IN UINTN Alignment\r |
| 1506 | )\r |
| 1507 | /*++\r |
| 1508 | \r |
| 1509 | Routine Description:\r |
| 1510 | \r |
| 1511 | Internal function. Used by the pool functions to allocate pages\r |
| 1512 | to back pool allocation requests.\r |
| 1513 | \r |
| 1514 | Arguments:\r |
| 1515 | \r |
| 1516 | PoolType - The type of memory for the new pool pages\r |
| 1517 | \r |
| 1518 | NumberOfPages - No of pages to allocate\r |
| 1519 | \r |
| 1520 | Alignment - Bits to align.\r |
| 1521 | \r |
| 1522 | Returns:\r |
| 1523 | \r |
| 1524 | The allocated memory, or NULL\r |
| 1525 | \r |
| 1526 | --*/\r |
| 1527 | {\r |
| 878ddf1f |
1528 | UINT64 Start;\r |
| 1529 | \r |
| 1530 | //\r |
| 1531 | // Find the pages to convert\r |
| 1532 | //\r |
| 1533 | Start = FindFreePages (EFI_MAX_ADDRESS, NumberOfPages, PoolType, Alignment);\r |
| 1534 | \r |
| 1535 | //\r |
| 1536 | // Convert it to boot services data\r |
| 1537 | //\r |
| 1538 | if (Start == 0) {\r |
| 1539 | DEBUG ((EFI_D_ERROR | EFI_D_PAGE, "AllocatePoolPages: failed to allocate %d pages\n", NumberOfPages));\r |
| 1540 | } else {\r |
| 1cc8ee78 |
1541 | CoreConvertPages (Start, NumberOfPages, PoolType);\r |
| 878ddf1f |
1542 | }\r |
| 1543 | \r |
| 1544 | return (VOID *)(UINTN)Start;\r |
| 1545 | }\r |
| 1546 | \r |
| 1547 | VOID\r |
| 1548 | CoreFreePoolPages (\r |
| 1549 | IN EFI_PHYSICAL_ADDRESS Memory,\r |
| 1550 | IN UINTN NumberOfPages\r |
| 1551 | )\r |
| 1552 | /*++\r |
| 1553 | \r |
| 1554 | Routine Description:\r |
| 1555 | \r |
| 1556 | Internal function. Frees pool pages allocated via AllocatePoolPages ()\r |
| 1557 | \r |
| 1558 | Arguments:\r |
| 1559 | \r |
| 1560 | Memory - The base address to free\r |
| 1561 | \r |
| 1562 | NumberOfPages - The number of pages to free\r |
| 1563 | \r |
| 1564 | Returns:\r |
| 1565 | \r |
| 1566 | None\r |
| 1567 | \r |
| 1568 | --*/\r |
| 1569 | {\r |
| 1570 | CoreConvertPages (Memory, NumberOfPages, EfiConventionalMemory);\r |
| 1571 | }\r |
| 1572 | \r |
| 1573 | \r |
| 1574 | EFI_STATUS\r |
| 1575 | CoreTerminateMemoryMap (\r |
| 1576 | IN UINTN MapKey\r |
| 1577 | )\r |
| 1578 | /*++\r |
| 1579 | \r |
| 1580 | Routine Description:\r |
| 1581 | \r |
| 1582 | Make sure the memory map is following all the construction rules, \r |
| 1583 | it is the last time to check memory map error before exit boot services.\r |
| 1584 | \r |
| 1585 | Arguments:\r |
| 1586 | \r |
| 1587 | MapKey - Memory map key\r |
| 1588 | \r |
| 1589 | Returns:\r |
| 1590 | \r |
| 1591 | EFI_INVALID_PARAMETER - Memory map not consistent with construction rules.\r |
| 1592 | \r |
| 1593 | EFI_SUCCESS - Valid memory map.\r |
| 1594 | \r |
| 1595 | --*/\r |
| 1596 | {\r |
| 1597 | EFI_STATUS Status;\r |
| 1598 | LIST_ENTRY *Link;\r |
| 1599 | MEMORY_MAP *Entry;\r |
| 1600 | \r |
| 1601 | Status = EFI_SUCCESS;\r |
| 1602 | \r |
| 1603 | CoreAcquireMemoryLock ();\r |
| 1604 | \r |
| 1605 | if (MapKey == mMemoryMapKey) {\r |
| 1606 | \r |
| 1607 | //\r |
| 1608 | // Make sure the memory map is following all the construction rules\r |
| 1609 | // This is the last chance we will be able to display any messages on\r |
| 1610 | // the console devices.\r |
| 1611 | //\r |
| 1612 | \r |
| 1613 | for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {\r |
| 1614 | Entry = CR(Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r |
| 1615 | if (Entry->Attribute & EFI_MEMORY_RUNTIME) { \r |
| 1616 | if (Entry->Type == EfiACPIReclaimMemory || Entry->Type == EfiACPIMemoryNVS) {\r |
| 1617 | DEBUG((EFI_D_ERROR, "ExitBootServices: ACPI memory entry has RUNTIME attribute set.\n"));\r |
| 1618 | CoreReleaseMemoryLock ();\r |
| 1619 | return EFI_INVALID_PARAMETER;\r |
| 1620 | }\r |
| 1621 | if (Entry->Start & (EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT - 1)) {\r |
| 1622 | DEBUG((EFI_D_ERROR, "ExitBootServices: A RUNTIME memory entry is not on a proper alignment.\n"));\r |
| 1623 | CoreReleaseMemoryLock ();\r |
| 1624 | return EFI_INVALID_PARAMETER;\r |
| 1625 | }\r |
| 1626 | if ((Entry->End + 1) & (EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT - 1)) {\r |
| 1627 | DEBUG((EFI_D_ERROR, "ExitBootServices: A RUNTIME memory entry is not on a proper alignment.\n"));\r |
| 1628 | CoreReleaseMemoryLock ();\r |
| 1629 | return EFI_INVALID_PARAMETER;\r |
| 1630 | }\r |
| 1631 | }\r |
| 1632 | }\r |
| 1633 | \r |
| 1634 | //\r |
| 1635 | // The map key they gave us matches what we expect. Fall through and\r |
| 1636 | // return success. In an ideal world we would clear out all of\r |
| 1637 | // EfiBootServicesCode and EfiBootServicesData. However this function\r |
| 1638 | // is not the last one called by ExitBootServices(), so we have to\r |
| 1639 | // preserve the memory contents.\r |
| 1640 | //\r |
| 1641 | } else {\r |
| 1642 | Status = EFI_INVALID_PARAMETER;\r |
| 1643 | }\r |
| 1644 | \r |
| 1645 | CoreReleaseMemoryLock ();\r |
| 1646 | \r |
| 1647 | return Status;\r |
| 1648 | }\r |
| 1649 | \r |
| 1650 | \r |
| 1651 | \r |
| 1652 | \r |
| 1653 | \r |
| 1654 | \r |
| 1655 | \r |
| 1656 | \r |
projects / mirror_edk2.git / blame