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504214c4 | 1 | /** @file \r |
28a00297 | 2 | \r |
504214c4 LG |
3 | UEFI Memory pool management functions.\r |
4 | \r | |
5 | Copyright (c) 2006 - 2008, Intel Corporation \r | |
28a00297 | 6 | All rights reserved. This program and the accompanying materials \r |
7 | are licensed and made available under the terms and conditions of the BSD License \r | |
8 | which accompanies this distribution. The full text of the license may be found at \r | |
9 | http://opensource.org/licenses/bsd-license.php \r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
13 | \r | |
504214c4 | 14 | **/\r |
28a00297 | 15 | \r |
16 | #include <DxeMain.h>\r | |
17 | \r | |
18 | #define POOL_FREE_SIGNATURE EFI_SIGNATURE_32('p','f','r','0')\r | |
19 | typedef struct {\r | |
20 | UINT32 Signature;\r | |
21 | UINT32 Index;\r | |
22 | LIST_ENTRY Link;\r | |
23 | } POOL_FREE;\r | |
24 | \r | |
25 | \r | |
26 | #define POOL_HEAD_SIGNATURE EFI_SIGNATURE_32('p','h','d','0')\r | |
27 | typedef struct {\r | |
28 | UINT32 Signature;\r | |
29 | UINT32 Size;\r | |
30 | EFI_MEMORY_TYPE Type;\r | |
31 | UINTN Reserved;\r | |
32 | CHAR8 Data[1];\r | |
33 | } POOL_HEAD;\r | |
34 | \r | |
35 | #define SIZE_OF_POOL_HEAD EFI_FIELD_OFFSET(POOL_HEAD,Data)\r | |
36 | \r | |
37 | #define POOL_TAIL_SIGNATURE EFI_SIGNATURE_32('p','t','a','l')\r | |
38 | typedef struct {\r | |
39 | UINT32 Signature;\r | |
40 | UINT32 Size;\r | |
41 | } POOL_TAIL;\r | |
42 | \r | |
43 | \r | |
44 | #define POOL_SHIFT 7\r | |
45 | \r | |
46 | #define POOL_OVERHEAD (SIZE_OF_POOL_HEAD + sizeof(POOL_TAIL))\r | |
47 | \r | |
48 | #define HEAD_TO_TAIL(a) \\r | |
49 | ((POOL_TAIL *) (((CHAR8 *) (a)) + (a)->Size - sizeof(POOL_TAIL)));\r | |
50 | \r | |
51 | \r | |
52 | #define SIZE_TO_LIST(a) ((a) >> POOL_SHIFT)\r | |
53 | #define LIST_TO_SIZE(a) ((a+1) << POOL_SHIFT)\r | |
54 | \r | |
55 | #define MAX_POOL_LIST SIZE_TO_LIST(DEFAULT_PAGE_ALLOCATION)\r | |
56 | \r | |
57 | #define MAX_POOL_SIZE (MAX_ADDRESS - POOL_OVERHEAD)\r | |
58 | \r | |
59 | //\r | |
60 | // Globals\r | |
61 | //\r | |
62 | \r | |
63 | #define POOL_SIGNATURE EFI_SIGNATURE_32('p','l','s','t')\r | |
64 | typedef struct {\r | |
65 | INTN Signature;\r | |
66 | UINTN Used;\r | |
67 | EFI_MEMORY_TYPE MemoryType;\r | |
68 | LIST_ENTRY FreeList[MAX_POOL_LIST];\r | |
69 | LIST_ENTRY Link;\r | |
70 | } POOL; \r | |
71 | \r | |
72 | \r | |
73 | POOL PoolHead[EfiMaxMemoryType];\r | |
74 | LIST_ENTRY PoolHeadList;\r | |
75 | \r | |
76 | //\r | |
77 | //\r | |
78 | //\r | |
79 | \r | |
162ed594 | 80 | \r |
81 | /**\r | |
82 | Called to initialize the pool.\r | |
83 | \r | |
84 | **/\r | |
28a00297 | 85 | VOID\r |
86 | CoreInitializePool (\r | |
87 | VOID\r | |
88 | )\r | |
28a00297 | 89 | {\r |
90 | UINTN Type;\r | |
91 | UINTN Index;\r | |
92 | \r | |
93 | for (Type=0; Type < EfiMaxMemoryType; Type++) {\r | |
94 | PoolHead[Type].Signature = 0;\r | |
95 | PoolHead[Type].Used = 0;\r | |
96 | PoolHead[Type].MemoryType = (EFI_MEMORY_TYPE) Type;\r | |
97 | for (Index=0; Index < MAX_POOL_LIST; Index++) {\r | |
98 | InitializeListHead (&PoolHead[Type].FreeList[Index]);\r | |
99 | }\r | |
100 | }\r | |
101 | InitializeListHead (&PoolHeadList);\r | |
102 | }\r | |
103 | \r | |
28a00297 | 104 | \r |
162ed594 | 105 | /**\r |
28a00297 | 106 | Look up pool head for specified memory type.\r |
107 | \r | |
162ed594 | 108 | @param MemoryType Memory type of which pool head is looked for \r |
28a00297 | 109 | \r |
162ed594 | 110 | @return Pointer of Corresponding pool head.\r |
28a00297 | 111 | \r |
162ed594 | 112 | **/\r |
113 | STATIC\r | |
114 | POOL *\r | |
115 | LookupPoolHead (\r | |
116 | IN EFI_MEMORY_TYPE MemoryType\r | |
117 | )\r | |
28a00297 | 118 | {\r |
119 | LIST_ENTRY *Link;\r | |
120 | POOL *Pool;\r | |
121 | UINTN Index;\r | |
122 | \r | |
123 | if (MemoryType >= 0 && MemoryType < EfiMaxMemoryType) {\r | |
124 | return &PoolHead[MemoryType];\r | |
125 | }\r | |
126 | \r | |
127 | if (MemoryType < 0) {\r | |
128 | \r | |
129 | for (Link = PoolHeadList.ForwardLink; Link != &PoolHeadList; Link = Link->ForwardLink) {\r | |
130 | Pool = CR(Link, POOL, Link, POOL_SIGNATURE);\r | |
131 | if (Pool->MemoryType == MemoryType) {\r | |
132 | return Pool;\r | |
133 | }\r | |
134 | }\r | |
135 | \r | |
136 | Pool = CoreAllocatePoolI (EfiBootServicesData, sizeof (POOL));\r | |
137 | if (Pool == NULL) {\r | |
138 | return NULL;\r | |
139 | }\r | |
140 | \r | |
141 | Pool->Signature = POOL_SIGNATURE;\r | |
142 | Pool->Used = 0;\r | |
143 | Pool->MemoryType = MemoryType;\r | |
144 | for (Index=0; Index < MAX_POOL_LIST; Index++) {\r | |
145 | InitializeListHead (&Pool->FreeList[Index]);\r | |
146 | }\r | |
147 | \r | |
148 | InsertHeadList (&PoolHeadList, &Pool->Link);\r | |
149 | \r | |
150 | return Pool;\r | |
151 | }\r | |
152 | \r | |
153 | return NULL;\r | |
154 | }\r | |
155 | \r | |
156 | \r | |
157 | \r | |
162ed594 | 158 | \r |
159 | /**\r | |
160 | Allocate pool of a particular type.\r | |
161 | \r | |
162 | @param PoolType Type of pool to allocate \r | |
163 | @param Size The amount of pool to allocate \r | |
164 | @param Buffer The address to return a pointer to the allocated \r | |
165 | pool \r | |
166 | \r | |
167 | @retval EFI_INVALID_PARAMETER PoolType not valid \r | |
168 | @retval EFI_OUT_OF_RESOURCES Size exceeds max pool size or allocation failed. \r | |
169 | @retval EFI_SUCCESS Pool successfully allocated.\r | |
170 | \r | |
171 | **/\r | |
28a00297 | 172 | EFI_STATUS\r |
173 | EFIAPI\r | |
174 | CoreAllocatePool (\r | |
175 | IN EFI_MEMORY_TYPE PoolType,\r | |
176 | IN UINTN Size,\r | |
177 | OUT VOID **Buffer\r | |
178 | )\r | |
28a00297 | 179 | {\r |
180 | EFI_STATUS Status;\r | |
181 | \r | |
182 | //\r | |
183 | // If it's not a valid type, fail it\r | |
184 | //\r | |
185 | if ((PoolType >= EfiMaxMemoryType && PoolType <= 0x7fffffff) ||\r | |
186 | PoolType == EfiConventionalMemory) {\r | |
187 | return EFI_INVALID_PARAMETER;\r | |
188 | }\r | |
189 | \r | |
190 | *Buffer = NULL;\r | |
191 | \r | |
192 | //\r | |
193 | // If size is too large, fail it\r | |
194 | // Base on the EFI spec, return status of EFI_OUT_OF_RESOURCES\r | |
195 | //\r | |
196 | if (Size > MAX_POOL_SIZE) {\r | |
197 | return EFI_OUT_OF_RESOURCES;\r | |
198 | }\r | |
199 | \r | |
200 | //\r | |
201 | // Acquire the memory lock and make the allocation\r | |
202 | //\r | |
203 | Status = CoreAcquireLockOrFail (&gMemoryLock);\r | |
204 | if (EFI_ERROR (Status)) {\r | |
205 | return EFI_OUT_OF_RESOURCES;\r | |
206 | }\r | |
207 | \r | |
208 | *Buffer = CoreAllocatePoolI (PoolType, Size);\r | |
209 | CoreReleaseMemoryLock ();\r | |
210 | return (*Buffer != NULL) ? EFI_SUCCESS : EFI_OUT_OF_RESOURCES;\r | |
211 | }\r | |
212 | \r | |
213 | \r | |
28a00297 | 214 | \r |
162ed594 | 215 | /**\r |
28a00297 | 216 | Internal function to allocate pool of a particular type.\r |
28a00297 | 217 | Caller must have the memory lock held\r |
218 | \r | |
162ed594 | 219 | @param PoolType Type of pool to allocate \r |
220 | @param Size The amount of pool to allocate \r | |
28a00297 | 221 | \r |
162ed594 | 222 | @return The allocate pool, or NULL\r |
28a00297 | 223 | \r |
162ed594 | 224 | **/\r |
225 | VOID *\r | |
226 | CoreAllocatePoolI (\r | |
227 | IN EFI_MEMORY_TYPE PoolType,\r | |
228 | IN UINTN Size\r | |
229 | )\r | |
28a00297 | 230 | {\r |
231 | POOL *Pool;\r | |
232 | POOL_FREE *Free;\r | |
233 | POOL_HEAD *Head;\r | |
234 | POOL_TAIL *Tail;\r | |
235 | CHAR8 *NewPage;\r | |
236 | VOID *Buffer;\r | |
237 | UINTN Index;\r | |
238 | UINTN FSize;\r | |
162ed594 | 239 | UINTN Offset;\r |
28a00297 | 240 | UINTN Adjustment;\r |
241 | UINTN NoPages;\r | |
242 | \r | |
243 | ASSERT_LOCKED (&gMemoryLock);\r | |
244 | \r | |
245 | //\r | |
246 | // Adjust the size by the pool header & tail overhead\r | |
247 | //\r | |
248 | \r | |
249 | //\r | |
250 | // Adjusting the Size to be of proper alignment so that\r | |
251 | // we don't get an unaligned access fault later when\r | |
252 | // pool_Tail is being initialized\r | |
253 | //\r | |
254 | ALIGN_VARIABLE (Size, Adjustment);\r | |
255 | \r | |
256 | Size += POOL_OVERHEAD;\r | |
257 | Index = SIZE_TO_LIST(Size);\r | |
258 | Pool = LookupPoolHead (PoolType);\r | |
259 | if (Pool== NULL) {\r | |
260 | return NULL;\r | |
261 | }\r | |
262 | Head = NULL;\r | |
263 | \r | |
264 | //\r | |
265 | // If allocation is over max size, just allocate pages for the request\r | |
266 | // (slow)\r | |
267 | //\r | |
268 | if (Index >= MAX_POOL_LIST) {\r | |
269 | NoPages = EFI_SIZE_TO_PAGES(Size) + EFI_SIZE_TO_PAGES (DEFAULT_PAGE_ALLOCATION) - 1;\r | |
270 | NoPages &= ~(EFI_SIZE_TO_PAGES (DEFAULT_PAGE_ALLOCATION) - 1);\r | |
271 | Head = CoreAllocatePoolPages (PoolType, NoPages, DEFAULT_PAGE_ALLOCATION);\r | |
272 | goto Done;\r | |
273 | }\r | |
274 | \r | |
275 | //\r | |
276 | // If there's no free pool in the proper list size, go get some more pages\r | |
277 | //\r | |
278 | if (IsListEmpty (&Pool->FreeList[Index])) {\r | |
279 | \r | |
280 | //\r | |
281 | // Get another page\r | |
282 | //\r | |
283 | NewPage = CoreAllocatePoolPages(PoolType, EFI_SIZE_TO_PAGES (DEFAULT_PAGE_ALLOCATION), DEFAULT_PAGE_ALLOCATION);\r | |
284 | if (NewPage == NULL) {\r | |
285 | goto Done;\r | |
286 | }\r | |
287 | \r | |
288 | //\r | |
289 | // Carve up new page into free pool blocks\r | |
290 | //\r | |
162ed594 | 291 | Offset = 0;\r |
292 | while (Offset < DEFAULT_PAGE_ALLOCATION) {\r | |
28a00297 | 293 | ASSERT (Index < MAX_POOL_LIST);\r |
294 | FSize = LIST_TO_SIZE(Index);\r | |
295 | \r | |
162ed594 | 296 | while (Offset + FSize <= DEFAULT_PAGE_ALLOCATION) {\r |
297 | Free = (POOL_FREE *) &NewPage[Offset]; \r | |
28a00297 | 298 | Free->Signature = POOL_FREE_SIGNATURE;\r |
299 | Free->Index = (UINT32)Index;\r | |
300 | InsertHeadList (&Pool->FreeList[Index], &Free->Link);\r | |
162ed594 | 301 | Offset += FSize;\r |
28a00297 | 302 | }\r |
303 | \r | |
304 | Index -= 1;\r | |
305 | }\r | |
306 | \r | |
162ed594 | 307 | ASSERT (Offset == DEFAULT_PAGE_ALLOCATION);\r |
28a00297 | 308 | Index = SIZE_TO_LIST(Size);\r |
309 | }\r | |
310 | \r | |
311 | //\r | |
312 | // Remove entry from free pool list\r | |
313 | //\r | |
314 | Free = CR (Pool->FreeList[Index].ForwardLink, POOL_FREE, Link, POOL_FREE_SIGNATURE);\r | |
315 | RemoveEntryList (&Free->Link);\r | |
316 | \r | |
317 | Head = (POOL_HEAD *) Free;\r | |
318 | \r | |
319 | Done:\r | |
320 | Buffer = NULL;\r | |
321 | \r | |
322 | if (Head != NULL) {\r | |
323 | \r | |
324 | //\r | |
325 | // If we have a pool buffer, fill in the header & tail info\r | |
326 | //\r | |
327 | Head->Signature = POOL_HEAD_SIGNATURE;\r | |
328 | Head->Size = (UINT32) Size;\r | |
329 | Head->Type = (EFI_MEMORY_TYPE) PoolType;\r | |
330 | Tail = HEAD_TO_TAIL (Head);\r | |
331 | Tail->Signature = POOL_TAIL_SIGNATURE;\r | |
332 | Tail->Size = (UINT32) Size;\r | |
333 | Buffer = Head->Data;\r | |
334 | DEBUG_CLEAR_MEMORY (Buffer, Size - POOL_OVERHEAD);\r | |
335 | \r | |
336 | DEBUG (\r | |
162ed594 | 337 | (DEBUG_POOL,\r |
88c8f7fb | 338 | "AllocatePoolI: Type %x, Addr %x (len %x) %,d\n",\r |
28a00297 | 339 | PoolType, \r |
340 | Buffer, \r | |
341 | Size - POOL_OVERHEAD, \r | |
342 | Pool->Used)\r | |
343 | );\r | |
344 | \r | |
345 | //\r | |
346 | // Account the allocation\r | |
347 | //\r | |
348 | Pool->Used += Size;\r | |
349 | \r | |
350 | } else {\r | |
162ed594 | 351 | DEBUG ((DEBUG_ERROR | DEBUG_POOL, "AllocatePool: failed to allocate %d bytes\n", Size));\r |
28a00297 | 352 | }\r |
353 | \r | |
354 | return Buffer;\r | |
355 | }\r | |
356 | \r | |
357 | \r | |
358 | \r | |
28a00297 | 359 | \r |
162ed594 | 360 | /**\r |
28a00297 | 361 | Frees pool.\r |
362 | \r | |
162ed594 | 363 | @param Buffer The allocated pool entry to free \r |
28a00297 | 364 | \r |
162ed594 | 365 | @retval EFI_INVALID_PARAMETER Buffer is not a valid value. \r |
366 | @retval EFI_SUCCESS Pool successfully freed.\r | |
28a00297 | 367 | \r |
162ed594 | 368 | **/\r |
369 | EFI_STATUS\r | |
370 | EFIAPI\r | |
371 | CoreFreePool (\r | |
372 | IN VOID *Buffer\r | |
373 | )\r | |
28a00297 | 374 | {\r |
375 | EFI_STATUS Status;\r | |
376 | \r | |
377 | if (NULL == Buffer) {\r | |
378 | return EFI_INVALID_PARAMETER;\r | |
379 | }\r | |
380 | \r | |
381 | CoreAcquireMemoryLock ();\r | |
382 | Status = CoreFreePoolI (Buffer);\r | |
383 | CoreReleaseMemoryLock ();\r | |
384 | return Status;\r | |
385 | }\r | |
386 | \r | |
387 | \r | |
28a00297 | 388 | \r |
162ed594 | 389 | /**\r |
28a00297 | 390 | Internal function to free a pool entry.\r |
28a00297 | 391 | Caller must have the memory lock held\r |
392 | \r | |
162ed594 | 393 | @param Buffer The allocated pool entry to free \r |
28a00297 | 394 | \r |
162ed594 | 395 | @retval EFI_INVALID_PARAMETER Buffer not valid \r |
396 | @retval EFI_SUCCESS Buffer successfully freed.\r | |
28a00297 | 397 | \r |
162ed594 | 398 | **/\r |
399 | EFI_STATUS\r | |
400 | CoreFreePoolI (\r | |
401 | IN VOID *Buffer\r | |
402 | )\r | |
28a00297 | 403 | {\r |
404 | POOL *Pool;\r | |
405 | POOL_HEAD *Head;\r | |
406 | POOL_TAIL *Tail;\r | |
407 | POOL_FREE *Free;\r | |
408 | UINTN Index;\r | |
409 | UINTN NoPages;\r | |
410 | UINTN Size;\r | |
411 | CHAR8 *NewPage;\r | |
412 | UINTN FSize;\r | |
162ed594 | 413 | UINTN Offset;\r |
28a00297 | 414 | BOOLEAN AllFree;\r |
415 | \r | |
416 | ASSERT(NULL != Buffer);\r | |
417 | //\r | |
418 | // Get the head & tail of the pool entry\r | |
419 | //\r | |
420 | Head = CR (Buffer, POOL_HEAD, Data, POOL_HEAD_SIGNATURE);\r | |
421 | ASSERT(NULL != Head);\r | |
422 | \r | |
423 | if (Head->Signature != POOL_HEAD_SIGNATURE) {\r | |
424 | return EFI_INVALID_PARAMETER;\r | |
425 | }\r | |
426 | \r | |
427 | Tail = HEAD_TO_TAIL (Head);\r | |
428 | ASSERT(NULL != Tail);\r | |
429 | \r | |
430 | //\r | |
431 | // Debug\r | |
432 | //\r | |
433 | ASSERT (Tail->Signature == POOL_TAIL_SIGNATURE);\r | |
434 | ASSERT (Head->Size == Tail->Size);\r | |
435 | ASSERT_LOCKED (&gMemoryLock);\r | |
436 | \r | |
437 | if (Tail->Signature != POOL_TAIL_SIGNATURE) {\r | |
438 | return EFI_INVALID_PARAMETER;\r | |
439 | }\r | |
440 | \r | |
441 | if (Head->Size != Tail->Size) {\r | |
442 | return EFI_INVALID_PARAMETER;\r | |
443 | }\r | |
444 | \r | |
445 | //\r | |
446 | // Determine the pool type and account for it\r | |
447 | //\r | |
448 | Size = Head->Size;\r | |
449 | Pool = LookupPoolHead (Head->Type);\r | |
450 | if (Pool == NULL) {\r | |
451 | return EFI_INVALID_PARAMETER;\r | |
452 | }\r | |
453 | Pool->Used -= Size;\r | |
162ed594 | 454 | DEBUG ((DEBUG_POOL, "FreePool: %x (len %x) %,d\n", Head->Data, Head->Size - POOL_OVERHEAD, Pool->Used));\r |
28a00297 | 455 | \r |
456 | //\r | |
457 | // Determine the pool list \r | |
458 | //\r | |
459 | Index = SIZE_TO_LIST(Size);\r | |
460 | DEBUG_CLEAR_MEMORY (Head, Size);\r | |
461 | \r | |
462 | //\r | |
463 | // If it's not on the list, it must be pool pages\r | |
464 | //\r | |
465 | if (Index >= MAX_POOL_LIST) {\r | |
466 | \r | |
467 | //\r | |
468 | // Return the memory pages back to free memory\r | |
469 | //\r | |
470 | NoPages = EFI_SIZE_TO_PAGES(Size) + EFI_SIZE_TO_PAGES (DEFAULT_PAGE_ALLOCATION) - 1;\r | |
471 | NoPages &= ~(EFI_SIZE_TO_PAGES (DEFAULT_PAGE_ALLOCATION) - 1);\r | |
472 | CoreFreePoolPages ((EFI_PHYSICAL_ADDRESS) (UINTN) Head, NoPages);\r | |
473 | \r | |
474 | } else {\r | |
475 | \r | |
476 | //\r | |
477 | // Put the pool entry onto the free pool list\r | |
478 | //\r | |
479 | Free = (POOL_FREE *) Head;\r | |
480 | ASSERT(NULL != Free);\r | |
481 | Free->Signature = POOL_FREE_SIGNATURE;\r | |
482 | Free->Index = (UINT32)Index;\r | |
483 | InsertHeadList (&Pool->FreeList[Index], &Free->Link);\r | |
484 | \r | |
485 | //\r | |
486 | // See if all the pool entries in the same page as Free are freed pool \r | |
487 | // entries\r | |
488 | //\r | |
489 | NewPage = (CHAR8 *)((UINTN)Free & ~((DEFAULT_PAGE_ALLOCATION) -1));\r | |
490 | Free = (POOL_FREE *) &NewPage[0];\r | |
491 | ASSERT(NULL != Free);\r | |
492 | \r | |
493 | if (Free->Signature == POOL_FREE_SIGNATURE) {\r | |
494 | \r | |
495 | Index = Free->Index;\r | |
496 | \r | |
497 | AllFree = TRUE;\r | |
162ed594 | 498 | Offset = 0;\r |
28a00297 | 499 | \r |
162ed594 | 500 | while ((Offset < DEFAULT_PAGE_ALLOCATION) && (AllFree)) {\r |
28a00297 | 501 | FSize = LIST_TO_SIZE(Index);\r |
162ed594 | 502 | while (Offset + FSize <= DEFAULT_PAGE_ALLOCATION) {\r |
503 | Free = (POOL_FREE *) &NewPage[Offset];\r | |
28a00297 | 504 | ASSERT(NULL != Free);\r |
505 | if (Free->Signature != POOL_FREE_SIGNATURE) {\r | |
506 | AllFree = FALSE;\r | |
507 | }\r | |
162ed594 | 508 | Offset += FSize;\r |
28a00297 | 509 | }\r |
510 | Index -= 1;\r | |
511 | }\r | |
512 | \r | |
513 | if (AllFree) {\r | |
514 | \r | |
515 | //\r | |
516 | // All of the pool entries in the same page as Free are free pool \r | |
517 | // entries\r | |
518 | // Remove all of these pool entries from the free loop lists.\r | |
519 | //\r | |
520 | Free = (POOL_FREE *) &NewPage[0];\r | |
521 | ASSERT(NULL != Free);\r | |
522 | Index = Free->Index;\r | |
162ed594 | 523 | Offset = 0;\r |
28a00297 | 524 | \r |
162ed594 | 525 | while (Offset < DEFAULT_PAGE_ALLOCATION) {\r |
28a00297 | 526 | FSize = LIST_TO_SIZE(Index);\r |
162ed594 | 527 | while (Offset + FSize <= DEFAULT_PAGE_ALLOCATION) {\r |
528 | Free = (POOL_FREE *) &NewPage[Offset];\r | |
28a00297 | 529 | ASSERT(NULL != Free);\r |
530 | RemoveEntryList (&Free->Link);\r | |
162ed594 | 531 | Offset += FSize;\r |
28a00297 | 532 | }\r |
533 | Index -= 1;\r | |
534 | }\r | |
535 | \r | |
536 | //\r | |
537 | // Free the page\r | |
538 | //\r | |
539 | CoreFreePoolPages ((EFI_PHYSICAL_ADDRESS) (UINTN)NewPage, EFI_SIZE_TO_PAGES (DEFAULT_PAGE_ALLOCATION));\r | |
540 | }\r | |
541 | }\r | |
542 | }\r | |
543 | \r | |
544 | //\r | |
545 | // If this is an OS specific memory type, then check to see if the last \r | |
546 | // portion of that memory type has been freed. If it has, then free the\r | |
547 | // list entry for that memory type\r | |
548 | //\r | |
549 | if (Pool->MemoryType < 0 && Pool->Used == 0) {\r | |
550 | RemoveEntryList (&Pool->Link);\r | |
551 | CoreFreePoolI (Pool);\r | |
552 | }\r | |
553 | \r | |
554 | return EFI_SUCCESS;\r | |
555 | }\r |