/** @file\r
SMM Memory pool management functions.\r
\r
- Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials are licensed and made available \r
under the terms and conditions of the BSD License which accompanies this \r
distribution. The full text of the license may be found at \r
)\r
{\r
UINTN Index;\r
- UINT64 SmmCodeSize;\r
- UINTN CurrentSmramRangesIndex;\r
- UINT64 MaxSize;\r
+ EFI_STATUS Status;\r
UINTN SmmPoolTypeIndex;\r
+ EFI_LOAD_FIXED_ADDRESS_CONFIGURATION_TABLE *LMFAConfigurationTable;\r
\r
//\r
// Initialize Pool list\r
InitializeListHead (&mSmmPoolLists[SmmPoolTypeIndex][Index]);\r
}\r
}\r
- CurrentSmramRangesIndex = 0;\r
- //\r
- // If Loading Module At fixed Address feature is enabled, cache the SMRAM base here\r
- //\r
- if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r
- //\r
- // Build tool will calculate the smm code size and then patch the PcdLoadFixAddressSmmCodePageNumber\r
- //\r
- SmmCodeSize = LShiftU64 (PcdGet32(PcdLoadFixAddressSmmCodePageNumber), EFI_PAGE_SHIFT);\r
- \r
- //\r
- // Find the largest SMRAM range between 1MB and 4GB that is at least 256KB - 4K in size\r
- //\r
- for (Index = 0, MaxSize = SIZE_256KB - EFI_PAGE_SIZE; Index < SmramRangeCount; Index++) {\r
- //\r
- // Skip any SMRAM region that is already allocated, needs testing, or needs ECC initialization\r
- //\r
- if ((SmramRanges[Index].RegionState & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) != 0) {\r
- continue;\r
- }\r
-\r
- if (SmramRanges[Index].CpuStart >= BASE_1MB) {\r
- if ((SmramRanges[Index].CpuStart + SmramRanges[Index].PhysicalSize - 1) <= MAX_ADDRESS) {\r
- if (SmramRanges[Index].PhysicalSize >= MaxSize) {\r
- MaxSize = SmramRanges[Index].PhysicalSize;\r
- CurrentSmramRangesIndex = Index;\r
- }\r
- }\r
- }\r
- }\r
- gLoadModuleAtFixAddressSmramBase = SmramRanges[CurrentSmramRangesIndex].CpuStart;\r
- \r
- //\r
- // cut out a memory range from this SMRAM range with the size SmmCodeSize to hold SMM driver code\r
- // A notable thing is that SMM core is already loaded into this range.\r
- //\r
- SmramRanges[CurrentSmramRangesIndex].CpuStart = SmramRanges[CurrentSmramRangesIndex].CpuStart + SmmCodeSize; \r
- SmramRanges[CurrentSmramRangesIndex].PhysicalSize = SmramRanges[CurrentSmramRangesIndex].PhysicalSize - SmmCodeSize;\r
+\r
+ Status = EfiGetSystemConfigurationTable (\r
+ &gLoadFixedAddressConfigurationTableGuid,\r
+ (VOID **) &LMFAConfigurationTable\r
+ );\r
+ if (!EFI_ERROR (Status) && LMFAConfigurationTable != NULL) {\r
+ gLoadModuleAtFixAddressSmramBase = LMFAConfigurationTable->SmramBase;\r
}\r
+\r
//\r
// Add Free SMRAM regions\r
// Need add Free memory at first, to let gSmmMemoryMap record data\r
{\r
EFI_STATUS Status;\r
FREE_POOL_HEADER *Hdr;\r
+ POOL_TAIL *Tail;\r
EFI_PHYSICAL_ADDRESS Address;\r
SMM_POOL_TYPE SmmPoolType;\r
\r
+ Address = 0;\r
SmmPoolType = UefiMemoryTypeToSmmPoolType(PoolType);\r
\r
ASSERT (PoolIndex <= MAX_POOL_INDEX);\r
Status = EFI_SUCCESS;\r
Hdr = NULL;\r
if (PoolIndex == MAX_POOL_INDEX) {\r
- Status = SmmInternalAllocatePages (AllocateAnyPages, PoolType, EFI_SIZE_TO_PAGES (MAX_POOL_SIZE << 1), &Address);\r
+ Status = SmmInternalAllocatePages (AllocateAnyPages, PoolType,\r
+ EFI_SIZE_TO_PAGES (MAX_POOL_SIZE << 1),\r
+ &Address, FALSE);\r
if (EFI_ERROR (Status)) {\r
return EFI_OUT_OF_RESOURCES;\r
}\r
} else {\r
Status = InternalAllocPoolByIndex (PoolType, PoolIndex + 1, &Hdr);\r
if (!EFI_ERROR (Status)) {\r
+ Hdr->Header.Signature = 0;\r
Hdr->Header.Size >>= 1;\r
Hdr->Header.Available = TRUE;\r
- Hdr->Header.Type = PoolType;\r
+ Hdr->Header.Type = 0;\r
+ Tail = HEAD_TO_TAIL(&Hdr->Header);\r
+ Tail->Signature = 0;\r
+ Tail->Size = 0;\r
InsertHeadList (&mSmmPoolLists[SmmPoolType][PoolIndex], &Hdr->Link);\r
Hdr = (FREE_POOL_HEADER*)((UINT8*)Hdr + Hdr->Header.Size);\r
}\r
}\r
\r
if (!EFI_ERROR (Status)) {\r
+ Hdr->Header.Signature = POOL_HEAD_SIGNATURE;\r
Hdr->Header.Size = MIN_POOL_SIZE << PoolIndex;\r
Hdr->Header.Available = FALSE;\r
Hdr->Header.Type = PoolType;\r
+ Tail = HEAD_TO_TAIL(&Hdr->Header);\r
+ Tail->Signature = POOL_TAIL_SIGNATURE;\r
+ Tail->Size = Hdr->Header.Size;\r
}\r
\r
*FreePoolHdr = Hdr;\r
Internal Function. Free a pool by specified PoolIndex.\r
\r
@param FreePoolHdr The pool to free.\r
+ @param PoolTail The pointer to the pool tail.\r
\r
@retval EFI_SUCCESS Pool successfully freed.\r
\r
**/\r
EFI_STATUS\r
InternalFreePoolByIndex (\r
- IN FREE_POOL_HEADER *FreePoolHdr\r
+ IN FREE_POOL_HEADER *FreePoolHdr,\r
+ IN POOL_TAIL *PoolTail\r
)\r
{\r
UINTN PoolIndex;\r
SmmPoolType = UefiMemoryTypeToSmmPoolType(FreePoolHdr->Header.Type);\r
\r
PoolIndex = (UINTN) (HighBitSet32 ((UINT32)FreePoolHdr->Header.Size) - MIN_POOL_SHIFT);\r
+ FreePoolHdr->Header.Signature = 0;\r
FreePoolHdr->Header.Available = TRUE;\r
+ FreePoolHdr->Header.Type = 0;\r
+ PoolTail->Signature = 0;\r
+ PoolTail->Size = 0;\r
ASSERT (PoolIndex < MAX_POOL_INDEX);\r
InsertHeadList (&mSmmPoolLists[SmmPoolType][PoolIndex], &FreePoolHdr->Link);\r
return EFI_SUCCESS;\r
)\r
{\r
POOL_HEADER *PoolHdr;\r
+ POOL_TAIL *PoolTail;\r
FREE_POOL_HEADER *FreePoolHdr;\r
EFI_STATUS Status;\r
EFI_PHYSICAL_ADDRESS Address;\r
UINTN PoolIndex;\r
+ BOOLEAN HasPoolTail;\r
+ BOOLEAN NeedGuard;\r
+ UINTN NoPages;\r
+\r
+ Address = 0;\r
\r
if (PoolType != EfiRuntimeServicesCode &&\r
PoolType != EfiRuntimeServicesData) {\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
- Size += sizeof (*PoolHdr);\r
- if (Size > MAX_POOL_SIZE) {\r
- Size = EFI_SIZE_TO_PAGES (Size);\r
- Status = SmmInternalAllocatePages (AllocateAnyPages, PoolType, Size, &Address);\r
+ NeedGuard = IsPoolTypeToGuard (PoolType);\r
+ HasPoolTail = !(NeedGuard &&\r
+ ((PcdGet8 (PcdHeapGuardPropertyMask) & BIT7) == 0));\r
+\r
+ //\r
+ // Adjust the size by the pool header & tail overhead\r
+ //\r
+ Size += POOL_OVERHEAD;\r
+ if (Size > MAX_POOL_SIZE || NeedGuard) {\r
+ if (!HasPoolTail) {\r
+ Size -= sizeof (POOL_TAIL);\r
+ }\r
+\r
+ NoPages = EFI_SIZE_TO_PAGES (Size);\r
+ Status = SmmInternalAllocatePages (AllocateAnyPages, PoolType, NoPages,\r
+ &Address, NeedGuard);\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
\r
+ if (NeedGuard) {\r
+ ASSERT (VerifyMemoryGuard (Address, NoPages) == TRUE);\r
+ Address = (EFI_PHYSICAL_ADDRESS)(UINTN)AdjustPoolHeadA (\r
+ Address,\r
+ NoPages,\r
+ Size\r
+ );\r
+ }\r
+\r
PoolHdr = (POOL_HEADER*)(UINTN)Address;\r
- PoolHdr->Size = EFI_PAGES_TO_SIZE (Size);\r
+ PoolHdr->Signature = POOL_HEAD_SIGNATURE;\r
+ PoolHdr->Size = EFI_PAGES_TO_SIZE (NoPages);\r
PoolHdr->Available = FALSE;\r
PoolHdr->Type = PoolType;\r
+\r
+ if (HasPoolTail) {\r
+ PoolTail = HEAD_TO_TAIL (PoolHdr);\r
+ PoolTail->Signature = POOL_TAIL_SIGNATURE;\r
+ PoolTail->Size = PoolHdr->Size;\r
+ }\r
+\r
*Buffer = PoolHdr + 1;\r
return Status;\r
}\r
)\r
{\r
FREE_POOL_HEADER *FreePoolHdr;\r
+ POOL_TAIL *PoolTail;\r
+ BOOLEAN HasPoolTail;\r
+ BOOLEAN MemoryGuarded;\r
\r
if (Buffer == NULL) {\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
+ MemoryGuarded = IsHeapGuardEnabled () &&\r
+ IsMemoryGuarded ((EFI_PHYSICAL_ADDRESS)(UINTN)Buffer);\r
+ HasPoolTail = !(MemoryGuarded &&\r
+ ((PcdGet8 (PcdHeapGuardPropertyMask) & BIT7) == 0));\r
+\r
FreePoolHdr = (FREE_POOL_HEADER*)((POOL_HEADER*)Buffer - 1);\r
+ ASSERT (FreePoolHdr->Header.Signature == POOL_HEAD_SIGNATURE);\r
ASSERT (!FreePoolHdr->Header.Available);\r
+ if (FreePoolHdr->Header.Signature != POOL_HEAD_SIGNATURE) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if (HasPoolTail) {\r
+ PoolTail = HEAD_TO_TAIL (&FreePoolHdr->Header);\r
+ ASSERT (PoolTail->Signature == POOL_TAIL_SIGNATURE);\r
+ ASSERT (FreePoolHdr->Header.Size == PoolTail->Size);\r
+ if (PoolTail->Signature != POOL_TAIL_SIGNATURE) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ if (FreePoolHdr->Header.Size != PoolTail->Size) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ } else {\r
+ PoolTail = NULL;\r
+ }\r
+\r
+ if (MemoryGuarded) {\r
+ Buffer = AdjustPoolHeadF ((EFI_PHYSICAL_ADDRESS)(UINTN)FreePoolHdr);\r
+ return SmmInternalFreePages (\r
+ (EFI_PHYSICAL_ADDRESS)(UINTN)Buffer,\r
+ EFI_SIZE_TO_PAGES (FreePoolHdr->Header.Size),\r
+ TRUE\r
+ );\r
+ }\r
\r
if (FreePoolHdr->Header.Size > MAX_POOL_SIZE) {\r
ASSERT (((UINTN)FreePoolHdr & EFI_PAGE_MASK) == 0);\r
ASSERT ((FreePoolHdr->Header.Size & EFI_PAGE_MASK) == 0);\r
return SmmInternalFreePages (\r
(EFI_PHYSICAL_ADDRESS)(UINTN)FreePoolHdr,\r
- EFI_SIZE_TO_PAGES (FreePoolHdr->Header.Size)\r
+ EFI_SIZE_TO_PAGES (FreePoolHdr->Header.Size),\r
+ FALSE\r
);\r
}\r
- return InternalFreePoolByIndex (FreePoolHdr);\r
+ return InternalFreePoolByIndex (FreePoolHdr, PoolTail);\r
}\r
\r
/**\r