/** @file\r
UEFI Memory pool management functions.\r
\r
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
\r
#include "DxeMain.h"\r
#include "Imem.h"\r
+#include "HeapGuard.h"
+\r
+STATIC EFI_LOCK mPoolMemoryLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_NOTIFY);\r
\r
#define POOL_FREE_SIGNATURE SIGNATURE_32('p','f','r','0')\r
typedef struct {\r
#define POOL_HEAD_SIGNATURE SIGNATURE_32('p','h','d','0')\r
typedef struct {\r
UINT32 Signature;\r
- UINT32 Size;\r
+ UINT32 Reserved;\r
EFI_MEMORY_TYPE Type;\r
- UINTN Reserved;\r
+ UINTN Size;\r
CHAR8 Data[1];\r
} POOL_HEAD;\r
\r
#define POOL_TAIL_SIGNATURE SIGNATURE_32('p','t','a','l')\r
typedef struct {\r
UINT32 Signature;\r
- UINT32 Size;\r
+ UINT32 Reserved;\r
+ UINTN Size;\r
} POOL_TAIL;\r
\r
-\r
-#define POOL_SHIFT 7\r
-\r
#define POOL_OVERHEAD (SIZE_OF_POOL_HEAD + sizeof(POOL_TAIL))\r
\r
#define HEAD_TO_TAIL(a) \\r
((POOL_TAIL *) (((CHAR8 *) (a)) + (a)->Size - sizeof(POOL_TAIL)));\r
\r
+//\r
+// Each element is the sum of the 2 previous ones: this allows us to migrate\r
+// blocks between bins by splitting them up, while not wasting too much memory\r
+// as we would in a strict power-of-2 sequence\r
+//\r
+STATIC CONST UINT16 mPoolSizeTable[] = {\r
+ 128, 256, 384, 640, 1024, 1664, 2688, 4352, 7040, 11392, 18432, 29824\r
+};\r
\r
-#define SIZE_TO_LIST(a) ((a) >> POOL_SHIFT)\r
-#define LIST_TO_SIZE(a) ((a+1) << POOL_SHIFT)\r
+#define SIZE_TO_LIST(a) (GetPoolIndexFromSize (a))\r
+#define LIST_TO_SIZE(a) (mPoolSizeTable [a])\r
\r
-#define MAX_POOL_LIST SIZE_TO_LIST(DEFAULT_PAGE_ALLOCATION)\r
+#define MAX_POOL_LIST (ARRAY_SIZE (mPoolSizeTable))\r
\r
#define MAX_POOL_SIZE (MAX_ADDRESS - POOL_OVERHEAD)\r
\r
//\r
LIST_ENTRY mPoolHeadList = INITIALIZE_LIST_HEAD_VARIABLE (mPoolHeadList);\r
\r
+/**\r
+ Get pool size table index from the specified size.\r
+\r
+ @param Size The specified size to get index from pool table.\r
+\r
+ @return The index of pool size table.\r
+\r
+**/\r
+STATIC\r
+UINTN\r
+GetPoolIndexFromSize (\r
+ UINTN Size\r
+ )\r
+{\r
+ UINTN Index;\r
+\r
+ for (Index = 0; Index < MAX_POOL_LIST; Index++) {\r
+ if (mPoolSizeTable [Index] >= Size) {\r
+ return Index;\r
+ }\r
+ }\r
+ return MAX_POOL_LIST;\r
+}\r
\r
/**\r
Called to initialize the pool.\r
mPoolHead[Type].Used = 0;\r
mPoolHead[Type].MemoryType = (EFI_MEMORY_TYPE) Type;\r
for (Index=0; Index < MAX_POOL_LIST; Index++) {\r
- InitializeListHead (&mPoolHead[Type].FreeList[Index]);\r
+ InitializeListHead (&mPoolHead[Type].FreeList[Index]);\r
}\r
}\r
}\r
POOL *Pool;\r
UINTN Index;\r
\r
- if (MemoryType >= 0 && MemoryType < EfiMaxMemoryType) {\r
+ if ((UINT32)MemoryType < EfiMaxMemoryType) {\r
return &mPoolHead[MemoryType];\r
}\r
\r
//\r
- // MemoryType values in the range 0x80000000..0xFFFFFFFF are reserved for use by UEFI \r
- // OS loaders that are provided by operating system vendors\r
+ // MemoryType values in the range 0x80000000..0xFFFFFFFF are reserved for use by UEFI\r
+ // OS loaders that are provided by operating system vendors.\r
+ // MemoryType values in the range 0x70000000..0x7FFFFFFF are reserved for OEM use.\r
//\r
- if (MemoryType >= (INT32)0x80000000 && MemoryType <= (INT32)0xffffffff) {\r
+ if ((UINT32) MemoryType >= MEMORY_TYPE_OEM_RESERVED_MIN) {\r
\r
for (Link = mPoolHeadList.ForwardLink; Link != &mPoolHeadList; Link = Link->ForwardLink) {\r
Pool = CR(Link, POOL, Link, POOL_SIGNATURE);\r
}\r
}\r
\r
- Pool = CoreAllocatePoolI (EfiBootServicesData, sizeof (POOL));\r
+ Pool = CoreAllocatePoolI (EfiBootServicesData, sizeof (POOL), FALSE);
if (Pool == NULL) {\r
return NULL;\r
}\r
@param Buffer The address to return a pointer to the allocated\r
pool\r
\r
- @retval EFI_INVALID_PARAMETER PoolType not valid\r
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.\r
+ PoolType is in the range EfiMaxMemoryType..0x6FFFFFFF.\r
+ PoolType is EfiPersistentMemory.\r
@retval EFI_OUT_OF_RESOURCES Size exceeds max pool size or allocation failed.\r
@retval EFI_SUCCESS Pool successfully allocated.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
-CoreAllocatePool (\r
+CoreInternalAllocatePool (\r
IN EFI_MEMORY_TYPE PoolType,\r
IN UINTN Size,\r
OUT VOID **Buffer\r
)\r
{\r
- EFI_STATUS Status;\r
+ EFI_STATUS Status;
+ BOOLEAN NeedGuard;
\r
//\r
// If it's not a valid type, fail it\r
//\r
- if ((PoolType >= EfiMaxMemoryType && PoolType <= 0x7fffffff) ||\r
- PoolType == EfiConventionalMemory) {\r
+ if ((PoolType >= EfiMaxMemoryType && PoolType < MEMORY_TYPE_OEM_RESERVED_MIN) ||\r
+ (PoolType == EfiConventionalMemory) || (PoolType == EfiPersistentMemory)) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if (Buffer == NULL) {\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
return EFI_OUT_OF_RESOURCES;\r
}\r
\r
+ NeedGuard = IsPoolTypeToGuard (PoolType) && !mOnGuarding;
+
//\r
// Acquire the memory lock and make the allocation\r
//\r
- Status = CoreAcquireLockOrFail (&gMemoryLock);\r
+ Status = CoreAcquireLockOrFail (&mPoolMemoryLock);\r
if (EFI_ERROR (Status)) {\r
return EFI_OUT_OF_RESOURCES;\r
}\r
\r
- *Buffer = CoreAllocatePoolI (PoolType, Size);\r
- CoreReleaseMemoryLock ();\r
+ *Buffer = CoreAllocatePoolI (PoolType, Size, NeedGuard);
+ CoreReleaseLock (&mPoolMemoryLock);\r
return (*Buffer != NULL) ? EFI_SUCCESS : EFI_OUT_OF_RESOURCES;\r
}\r
\r
+/**\r
+ Allocate pool of a particular type.\r
+\r
+ @param PoolType Type of pool to allocate\r
+ @param Size The amount of pool to allocate\r
+ @param Buffer The address to return a pointer to the allocated\r
+ pool\r
+\r
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.\r
+ PoolType is in the range EfiMaxMemoryType..0x6FFFFFFF.\r
+ PoolType is EfiPersistentMemory.\r
+ @retval EFI_OUT_OF_RESOURCES Size exceeds max pool size or allocation failed.\r
+ @retval EFI_SUCCESS Pool successfully allocated.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+CoreAllocatePool (\r
+ IN EFI_MEMORY_TYPE PoolType,\r
+ IN UINTN Size,\r
+ OUT VOID **Buffer\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ Status = CoreInternalAllocatePool (PoolType, Size, Buffer);\r
+ if (!EFI_ERROR (Status)) {\r
+ CoreUpdateProfile (\r
+ (EFI_PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS (0),\r
+ MemoryProfileActionAllocatePool,\r
+ PoolType,\r
+ Size,\r
+ *Buffer,\r
+ NULL\r
+ );\r
+ InstallMemoryAttributesTableOnMemoryAllocation (PoolType);\r
+ }\r
+ return Status;\r
+}\r
+\r
+/**\r
+ Internal function. Used by the pool functions to allocate pages\r
+ to back pool allocation requests.\r
\r
+ @param PoolType The type of memory for the new pool pages\r
+ @param NoPages No of pages to allocate\r
+ @param Granularity Bits to align.\r
+ @param NeedGuard Flag to indicate Guard page is needed or not
+\r
+ @return The allocated memory, or NULL\r
+\r
+**/\r
+STATIC\r
+VOID *\r
+CoreAllocatePoolPagesI (\r
+ IN EFI_MEMORY_TYPE PoolType,\r
+ IN UINTN NoPages,\r
+ IN UINTN Granularity,
+ IN BOOLEAN NeedGuard
+ )\r
+{\r
+ VOID *Buffer;\r
+ EFI_STATUS Status;\r
+\r
+ Status = CoreAcquireLockOrFail (&gMemoryLock);\r
+ if (EFI_ERROR (Status)) {\r
+ return NULL;\r
+ }\r
+\r
+ Buffer = CoreAllocatePoolPages (PoolType, NoPages, Granularity, NeedGuard);
+ CoreReleaseMemoryLock ();\r
+\r
+ if (Buffer != NULL) {\r
+ if (NeedGuard) {
+ SetGuardForMemory ((EFI_PHYSICAL_ADDRESS)(UINTN)Buffer, NoPages);
+ }
+ ApplyMemoryProtectionPolicy(EfiConventionalMemory, PoolType,
+ (EFI_PHYSICAL_ADDRESS)(UINTN)Buffer, EFI_PAGES_TO_SIZE (NoPages));\r
+ }\r
+ return Buffer;\r
+}\r
\r
/**\r
Internal function to allocate pool of a particular type.\r
\r
@param PoolType Type of pool to allocate\r
@param Size The amount of pool to allocate\r
+ @param NeedGuard Flag to indicate Guard page is needed or not
\r
@return The allocate pool, or NULL\r
\r
VOID *\r
CoreAllocatePoolI (\r
IN EFI_MEMORY_TYPE PoolType,\r
- IN UINTN Size\r
+ IN UINTN Size,
+ IN BOOLEAN NeedGuard
)\r
{\r
POOL *Pool;\r
VOID *Buffer;\r
UINTN Index;\r
UINTN FSize;\r
- UINTN Offset;\r
+ UINTN Offset, MaxOffset;\r
UINTN NoPages;\r
+ UINTN Granularity;\r
+ BOOLEAN HasPoolTail;
+\r
+ ASSERT_LOCKED (&mPoolMemoryLock);\r
+\r
+ if (PoolType == EfiACPIReclaimMemory ||\r
+ PoolType == EfiACPIMemoryNVS ||\r
+ PoolType == EfiRuntimeServicesCode ||\r
+ PoolType == EfiRuntimeServicesData) {\r
\r
- ASSERT_LOCKED (&gMemoryLock);\r
+ Granularity = RUNTIME_PAGE_ALLOCATION_GRANULARITY;\r
+ } else {\r
+ Granularity = DEFAULT_PAGE_ALLOCATION_GRANULARITY;\r
+ }\r
\r
//\r
// Adjust the size by the pool header & tail overhead\r
//\r
\r
+ HasPoolTail = !(NeedGuard &&
+ ((PcdGet8 (PcdHeapGuardPropertyMask) & BIT7) == 0));
+
//\r
// Adjusting the Size to be of proper alignment so that\r
// we don't get an unaligned access fault later when\r
// If allocation is over max size, just allocate pages for the request\r
// (slow)\r
//\r
- if (Index >= MAX_POOL_LIST) {\r
- NoPages = EFI_SIZE_TO_PAGES(Size) + EFI_SIZE_TO_PAGES (DEFAULT_PAGE_ALLOCATION) - 1;\r
- NoPages &= ~(EFI_SIZE_TO_PAGES (DEFAULT_PAGE_ALLOCATION) - 1);\r
- Head = CoreAllocatePoolPages (PoolType, NoPages, DEFAULT_PAGE_ALLOCATION);\r
+ if (Index >= SIZE_TO_LIST (Granularity) || NeedGuard) {
+ if (!HasPoolTail) {
+ Size -= sizeof (POOL_TAIL);
+ }
+ NoPages = EFI_SIZE_TO_PAGES (Size) + EFI_SIZE_TO_PAGES (Granularity) - 1;
+ NoPages &= ~(UINTN)(EFI_SIZE_TO_PAGES (Granularity) - 1);\r
+ Head = CoreAllocatePoolPagesI (PoolType, NoPages, Granularity, NeedGuard);
+ if (NeedGuard) {
+ Head = AdjustPoolHeadA ((EFI_PHYSICAL_ADDRESS)(UINTN)Head, NoPages, Size);
+ }
goto Done;\r
}\r
\r
//\r
if (IsListEmpty (&Pool->FreeList[Index])) {\r
\r
+ Offset = LIST_TO_SIZE (Index);\r
+ MaxOffset = Granularity;\r
+\r
+ //\r
+ // Check the bins holding larger blocks, and carve one up if needed\r
+ //\r
+ while (++Index < SIZE_TO_LIST (Granularity)) {\r
+ if (!IsListEmpty (&Pool->FreeList[Index])) {\r
+ Free = CR (Pool->FreeList[Index].ForwardLink, POOL_FREE, Link, POOL_FREE_SIGNATURE);\r
+ RemoveEntryList (&Free->Link);\r
+ NewPage = (VOID *) Free;\r
+ MaxOffset = LIST_TO_SIZE (Index);\r
+ goto Carve;\r
+ }\r
+ }\r
+\r
//\r
// Get another page\r
//\r
- NewPage = CoreAllocatePoolPages(PoolType, EFI_SIZE_TO_PAGES (DEFAULT_PAGE_ALLOCATION), DEFAULT_PAGE_ALLOCATION);\r
+ NewPage = CoreAllocatePoolPagesI (PoolType, EFI_SIZE_TO_PAGES (Granularity),
+ Granularity, NeedGuard);
if (NewPage == NULL) {\r
goto Done;\r
}\r
\r
//\r
- // Carve up new page into free pool blocks\r
+ // Serve the allocation request from the head of the allocated block\r
+ //\r
+Carve:\r
+ Head = (POOL_HEAD *) NewPage;\r
+\r
+ //\r
+ // Carve up remaining space into free pool blocks\r
//\r
- Offset = 0;\r
- while (Offset < DEFAULT_PAGE_ALLOCATION) {\r
+ Index--;\r
+ while (Offset < MaxOffset) {\r
ASSERT (Index < MAX_POOL_LIST);\r
FSize = LIST_TO_SIZE(Index);\r
\r
- while (Offset + FSize <= DEFAULT_PAGE_ALLOCATION) {\r
+ while (Offset + FSize <= MaxOffset) {\r
Free = (POOL_FREE *) &NewPage[Offset];\r
Free->Signature = POOL_FREE_SIGNATURE;\r
Free->Index = (UINT32)Index;\r
InsertHeadList (&Pool->FreeList[Index], &Free->Link);\r
Offset += FSize;\r
}\r
-\r
Index -= 1;\r
}\r
\r
- ASSERT (Offset == DEFAULT_PAGE_ALLOCATION);\r
- Index = SIZE_TO_LIST(Size);\r
+ ASSERT (Offset == MaxOffset);\r
+ goto Done;\r
}\r
\r
//\r
\r
if (Head != NULL) {\r
\r
+ //
+ // Account the allocation
+ //
+ Pool->Used += Size;
+
//\r
// If we have a pool buffer, fill in the header & tail info\r
//\r
Head->Signature = POOL_HEAD_SIGNATURE;\r
- Head->Size = (UINT32) Size;\r
+ Head->Size = Size;\r
Head->Type = (EFI_MEMORY_TYPE) PoolType;\r
- Tail = HEAD_TO_TAIL (Head);\r
- Tail->Signature = POOL_TAIL_SIGNATURE;\r
- Tail->Size = (UINT32) Size;\r
Buffer = Head->Data;\r
- DEBUG_CLEAR_MEMORY (Buffer, Size - POOL_OVERHEAD);\r
+
+ if (HasPoolTail) {
+ Tail = HEAD_TO_TAIL (Head);
+ Tail->Signature = POOL_TAIL_SIGNATURE;
+ Tail->Size = Size;
+
+ Size -= POOL_OVERHEAD;
+ } else {
+ Size -= SIZE_OF_POOL_HEAD;
+ }
+
+ DEBUG_CLEAR_MEMORY (Buffer, Size);
\r
DEBUG ((\r
DEBUG_POOL,\r
"AllocatePoolI: Type %x, Addr %p (len %lx) %,ld\n", PoolType,\r
Buffer,\r
- (UINT64)(Size - POOL_OVERHEAD),\r
+ (UINT64)Size,
(UINT64) Pool->Used\r
));\r
\r
- //\r
- // Account the allocation\r
- //\r
- Pool->Used += Size;\r
\r
} else {\r
DEBUG ((DEBUG_ERROR | DEBUG_POOL, "AllocatePool: failed to allocate %ld bytes\n", (UINT64) Size));\r
Frees pool.\r
\r
@param Buffer The allocated pool entry to free\r
+ @param PoolType Pointer to pool type\r
\r
@retval EFI_INVALID_PARAMETER Buffer is not a valid value.\r
@retval EFI_SUCCESS Pool successfully freed.\r
**/\r
EFI_STATUS\r
EFIAPI\r
-CoreFreePool (\r
- IN VOID *Buffer\r
+CoreInternalFreePool (\r
+ IN VOID *Buffer,\r
+ OUT EFI_MEMORY_TYPE *PoolType OPTIONAL\r
)\r
{\r
EFI_STATUS Status;\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
- CoreAcquireMemoryLock ();\r
- Status = CoreFreePoolI (Buffer);\r
- CoreReleaseMemoryLock ();\r
+ CoreAcquireLock (&mPoolMemoryLock);\r
+ Status = CoreFreePoolI (Buffer, PoolType);\r
+ CoreReleaseLock (&mPoolMemoryLock);\r
+ return Status;\r
+}\r
+\r
+/**\r
+ Frees pool.\r
+\r
+ @param Buffer The allocated pool entry to free\r
+\r
+ @retval EFI_INVALID_PARAMETER Buffer is not a valid value.\r
+ @retval EFI_SUCCESS Pool successfully freed.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+CoreFreePool (\r
+ IN VOID *Buffer\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_MEMORY_TYPE PoolType;\r
+\r
+ Status = CoreInternalFreePool (Buffer, &PoolType);\r
+ if (!EFI_ERROR (Status)) {\r
+ CoreUpdateProfile (\r
+ (EFI_PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS (0),\r
+ MemoryProfileActionFreePool,\r
+ PoolType,\r
+ 0,\r
+ Buffer,\r
+ NULL\r
+ );\r
+ InstallMemoryAttributesTableOnMemoryAllocation (PoolType);\r
+ }\r
return Status;\r
}\r
\r
+/**\r
+ Internal function. Frees pool pages allocated via CoreAllocatePoolPagesI().\r
+\r
+ @param PoolType The type of memory for the pool pages\r
+ @param Memory The base address to free\r
+ @param NoPages The number of pages to free\r
+\r
+**/\r
+STATIC\r
+VOID\r
+CoreFreePoolPagesI (\r
+ IN EFI_MEMORY_TYPE PoolType,\r
+ IN EFI_PHYSICAL_ADDRESS Memory,\r
+ IN UINTN NoPages\r
+ )\r
+{\r
+ CoreAcquireMemoryLock ();\r
+ CoreFreePoolPages (Memory, NoPages);\r
+ CoreReleaseMemoryLock ();\r
\r
+ ApplyMemoryProtectionPolicy (PoolType, EfiConventionalMemory,\r
+ (EFI_PHYSICAL_ADDRESS)(UINTN)Memory, EFI_PAGES_TO_SIZE (NoPages));\r
+}\r
\r
+/**
+ Internal function. Frees guarded pool pages.
+
+ @param PoolType The type of memory for the pool pages
+ @param Memory The base address to free
+ @param NoPages The number of pages to free
+
+**/
+STATIC
+VOID
+CoreFreePoolPagesWithGuard (
+ IN EFI_MEMORY_TYPE PoolType,
+ IN EFI_PHYSICAL_ADDRESS Memory,
+ IN UINTN NoPages
+ )
+{
+ EFI_PHYSICAL_ADDRESS MemoryGuarded;
+ UINTN NoPagesGuarded;
+
+ MemoryGuarded = Memory;
+ NoPagesGuarded = NoPages;
+
+ AdjustMemoryF (&Memory, &NoPages);
+ CoreFreePoolPagesI (PoolType, Memory, NoPages);
+
+ UnsetGuardForMemory (MemoryGuarded, NoPagesGuarded);
+}
+
/**\r
Internal function to free a pool entry.\r
Caller must have the memory lock held\r
\r
@param Buffer The allocated pool entry to free\r
+ @param PoolType Pointer to pool type\r
\r
@retval EFI_INVALID_PARAMETER Buffer not valid\r
@retval EFI_SUCCESS Buffer successfully freed.\r
**/\r
EFI_STATUS\r
CoreFreePoolI (\r
- IN VOID *Buffer\r
+ IN VOID *Buffer,\r
+ OUT EFI_MEMORY_TYPE *PoolType OPTIONAL\r
)\r
{\r
POOL *Pool;\r
UINTN NoPages;\r
UINTN Size;\r
CHAR8 *NewPage;\r
- UINTN FSize;\r
UINTN Offset;\r
BOOLEAN AllFree;\r
+ UINTN Granularity;\r
+ BOOLEAN IsGuarded;
+ BOOLEAN HasPoolTail;
\r
ASSERT(Buffer != NULL);\r
//\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
- Tail = HEAD_TO_TAIL (Head);\r
- ASSERT(Tail != NULL);\r
-\r
- //\r
- // Debug\r
- //\r
- ASSERT (Tail->Signature == POOL_TAIL_SIGNATURE);\r
- ASSERT (Head->Size == Tail->Size);\r
- ASSERT_LOCKED (&gMemoryLock);\r
-\r
- if (Tail->Signature != POOL_TAIL_SIGNATURE) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (Head->Size != Tail->Size) {\r
- return EFI_INVALID_PARAMETER;\r
+ IsGuarded = IsPoolTypeToGuard (Head->Type) &&
+ IsMemoryGuarded ((EFI_PHYSICAL_ADDRESS)(UINTN)Head);
+ HasPoolTail = !(IsGuarded &&
+ ((PcdGet8 (PcdHeapGuardPropertyMask) & BIT7) == 0));
+\r
+ if (HasPoolTail) {
+ Tail = HEAD_TO_TAIL (Head);
+ ASSERT (Tail != NULL);
+\r
+ //
+ // Debug
+ //
+ ASSERT (Tail->Signature == POOL_TAIL_SIGNATURE);
+ ASSERT (Head->Size == Tail->Size);
+\r
+ if (Tail->Signature != POOL_TAIL_SIGNATURE) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Head->Size != Tail->Size) {
+ return EFI_INVALID_PARAMETER;
+ }
}\r
\r
+ ASSERT_LOCKED (&mPoolMemoryLock);
+
//\r
// Determine the pool type and account for it\r
//\r
Pool->Used -= Size;\r
DEBUG ((DEBUG_POOL, "FreePool: %p (len %lx) %,ld\n", Head->Data, (UINT64)(Head->Size - POOL_OVERHEAD), (UINT64) Pool->Used));\r
\r
+ if (Head->Type == EfiACPIReclaimMemory ||\r
+ Head->Type == EfiACPIMemoryNVS ||\r
+ Head->Type == EfiRuntimeServicesCode ||\r
+ Head->Type == EfiRuntimeServicesData) {\r
+\r
+ Granularity = RUNTIME_PAGE_ALLOCATION_GRANULARITY;\r
+ } else {\r
+ Granularity = DEFAULT_PAGE_ALLOCATION_GRANULARITY;\r
+ }\r
+\r
+ if (PoolType != NULL) {\r
+ *PoolType = Head->Type;\r
+ }\r
+\r
//\r
// Determine the pool list\r
//\r
//\r
// If it's not on the list, it must be pool pages\r
//\r
- if (Index >= MAX_POOL_LIST) {\r
+ if (Index >= SIZE_TO_LIST (Granularity) || IsGuarded) {
\r
//\r
// Return the memory pages back to free memory\r
//\r
- NoPages = EFI_SIZE_TO_PAGES(Size) + EFI_SIZE_TO_PAGES (DEFAULT_PAGE_ALLOCATION) - 1;\r
- NoPages &= ~(EFI_SIZE_TO_PAGES (DEFAULT_PAGE_ALLOCATION) - 1);\r
- CoreFreePoolPages ((EFI_PHYSICAL_ADDRESS) (UINTN) Head, NoPages);\r
+ NoPages = EFI_SIZE_TO_PAGES (Size) + EFI_SIZE_TO_PAGES (Granularity) - 1;
+ NoPages &= ~(UINTN)(EFI_SIZE_TO_PAGES (Granularity) - 1);\r
+ if (IsGuarded) {
+ Head = AdjustPoolHeadF ((EFI_PHYSICAL_ADDRESS)(UINTN)Head);
+ CoreFreePoolPagesWithGuard (
+ Pool->MemoryType,
+ (EFI_PHYSICAL_ADDRESS)(UINTN)Head,
+ NoPages
+ );
+ } else {
+ CoreFreePoolPagesI (
+ Pool->MemoryType,
+ (EFI_PHYSICAL_ADDRESS)(UINTN)Head,
+ NoPages
+ );
+ }
\r
} else {\r
\r
// See if all the pool entries in the same page as Free are freed pool\r
// entries\r
//\r
- NewPage = (CHAR8 *)((UINTN)Free & ~((DEFAULT_PAGE_ALLOCATION) -1));\r
+ NewPage = (CHAR8 *)((UINTN)Free & ~(Granularity - 1));\r
Free = (POOL_FREE *) &NewPage[0];\r
ASSERT(Free != NULL);\r
\r
if (Free->Signature == POOL_FREE_SIGNATURE) {\r
\r
- Index = Free->Index;\r
-\r
AllFree = TRUE;\r
Offset = 0;\r
\r
- while ((Offset < DEFAULT_PAGE_ALLOCATION) && (AllFree)) {\r
- FSize = LIST_TO_SIZE(Index);\r
- while (Offset + FSize <= DEFAULT_PAGE_ALLOCATION) {\r
- Free = (POOL_FREE *) &NewPage[Offset];\r
- ASSERT(Free != NULL);\r
- if (Free->Signature != POOL_FREE_SIGNATURE) {\r
- AllFree = FALSE;\r
- }\r
- Offset += FSize;\r
+ while ((Offset < Granularity) && (AllFree)) {\r
+ Free = (POOL_FREE *) &NewPage[Offset];\r
+ ASSERT(Free != NULL);\r
+ if (Free->Signature != POOL_FREE_SIGNATURE) {\r
+ AllFree = FALSE;\r
}\r
- Index -= 1;\r
+ Offset += LIST_TO_SIZE(Free->Index);\r
}\r
\r
if (AllFree) {\r
//\r
Free = (POOL_FREE *) &NewPage[0];\r
ASSERT(Free != NULL);\r
- Index = Free->Index;\r
Offset = 0;\r
\r
- while (Offset < DEFAULT_PAGE_ALLOCATION) {\r
- FSize = LIST_TO_SIZE(Index);\r
- while (Offset + FSize <= DEFAULT_PAGE_ALLOCATION) {\r
- Free = (POOL_FREE *) &NewPage[Offset];\r
- ASSERT(Free != NULL);\r
- RemoveEntryList (&Free->Link);\r
- Offset += FSize;\r
- }\r
- Index -= 1;\r
+ while (Offset < Granularity) {\r
+ Free = (POOL_FREE *) &NewPage[Offset];\r
+ ASSERT(Free != NULL);\r
+ RemoveEntryList (&Free->Link);\r
+ Offset += LIST_TO_SIZE(Free->Index);\r
}\r
\r
//\r
// Free the page\r
//\r
- CoreFreePoolPages ((EFI_PHYSICAL_ADDRESS) (UINTN)NewPage, EFI_SIZE_TO_PAGES (DEFAULT_PAGE_ALLOCATION));\r
+ CoreFreePoolPagesI (Pool->MemoryType, (EFI_PHYSICAL_ADDRESS) (UINTN)NewPage,\r
+ EFI_SIZE_TO_PAGES (Granularity));\r
}\r
}\r
}\r
\r
//\r
- // If this is an OS specific memory type, then check to see if the last\r
+ // If this is an OS/OEM specific memory type, then check to see if the last\r
// portion of that memory type has been freed. If it has, then free the\r
// list entry for that memory type\r
//\r
- if (Pool->MemoryType < 0 && Pool->Used == 0) {\r
+ if (((UINT32) Pool->MemoryType >= MEMORY_TYPE_OEM_RESERVED_MIN) && Pool->Used == 0) {\r
RemoveEntryList (&Pool->Link);\r
- CoreFreePoolI (Pool);\r
+ CoreFreePoolI (Pool, NULL);\r
}\r
\r
return EFI_SUCCESS;\r
}\r
+\r
projects / mirror_edk2.git / blobdiff