/** @file\r
EFI PEI Core memory services\r
\r
-Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2017, 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
\r
/**\r
- The purpose of the service is to publish an interface that allows \r
+ Migrate memory pages allocated in pre-memory phase.\r
+ Copy memory pages at temporary heap top to permanent heap top.\r
+\r
+ @param[in] Private Pointer to the private data passed in from caller.\r
+ @param[in] TemporaryRamMigrated Temporary memory has been migrated to permanent memory.\r
+\r
+**/\r
+VOID\r
+MigrateMemoryPages (\r
+ IN PEI_CORE_INSTANCE *Private,\r
+ IN BOOLEAN TemporaryRamMigrated\r
+ )\r
+{\r
+ EFI_PHYSICAL_ADDRESS NewMemPagesBase;\r
+ EFI_PHYSICAL_ADDRESS MemPagesBase;\r
+\r
+ Private->MemoryPages.Size = (UINTN) (Private->HobList.HandoffInformationTable->EfiMemoryTop -\r
+ Private->HobList.HandoffInformationTable->EfiFreeMemoryTop);\r
+ if (Private->MemoryPages.Size == 0) {\r
+ //\r
+ // No any memory page allocated in pre-memory phase.\r
+ //\r
+ return;\r
+ }\r
+ Private->MemoryPages.Base = Private->HobList.HandoffInformationTable->EfiFreeMemoryTop;\r
+\r
+ ASSERT (Private->MemoryPages.Size <= Private->FreePhysicalMemoryTop);\r
+ NewMemPagesBase = Private->FreePhysicalMemoryTop - Private->MemoryPages.Size;\r
+ NewMemPagesBase &= ~(UINT64)EFI_PAGE_MASK;\r
+ ASSERT (NewMemPagesBase >= Private->PhysicalMemoryBegin);\r
+ //\r
+ // Copy memory pages at temporary heap top to permanent heap top.\r
+ //\r
+ if (TemporaryRamMigrated) {\r
+ //\r
+ // Memory pages at temporary heap top has been migrated to permanent heap,\r
+ // Here still needs to copy them from permanent heap to permanent heap top.\r
+ //\r
+ MemPagesBase = Private->MemoryPages.Base;\r
+ if (Private->HeapOffsetPositive) {\r
+ MemPagesBase += Private->HeapOffset;\r
+ } else {\r
+ MemPagesBase -= Private->HeapOffset;\r
+ }\r
+ CopyMem ((VOID *)(UINTN)NewMemPagesBase, (VOID *)(UINTN)MemPagesBase, Private->MemoryPages.Size);\r
+ } else {\r
+ CopyMem ((VOID *)(UINTN)NewMemPagesBase, (VOID *)(UINTN)Private->MemoryPages.Base, Private->MemoryPages.Size);\r
+ }\r
+\r
+ if (NewMemPagesBase >= Private->MemoryPages.Base) {\r
+ Private->MemoryPages.OffsetPositive = TRUE;\r
+ Private->MemoryPages.Offset = (UINTN)(NewMemPagesBase - Private->MemoryPages.Base);\r
+ } else {\r
+ Private->MemoryPages.OffsetPositive = FALSE;\r
+ Private->MemoryPages.Offset = (UINTN)(Private->MemoryPages.Base - NewMemPagesBase);\r
+ }\r
+\r
+ DEBUG ((DEBUG_INFO, "Pages Offset = 0x%lX\n", (UINT64) Private->MemoryPages.Offset));\r
+\r
+ Private->FreePhysicalMemoryTop = NewMemPagesBase;\r
+}\r
+\r
+/**\r
+ Migrate MemoryBaseAddress in memory allocation HOBs\r
+ from the temporary memory to PEI installed memory.\r
+\r
+ @param[in] PrivateData Pointer to PeiCore's private data structure.\r
+\r
+**/\r
+VOID\r
+ConvertMemoryAllocationHobs (\r
+ IN PEI_CORE_INSTANCE *PrivateData\r
+ )\r
+{\r
+ EFI_PEI_HOB_POINTERS Hob;\r
+ EFI_HOB_MEMORY_ALLOCATION *MemoryAllocationHob;\r
+ EFI_PHYSICAL_ADDRESS OldMemPagesBase;\r
+ UINTN OldMemPagesSize;\r
+\r
+ if (PrivateData->MemoryPages.Size == 0) {\r
+ //\r
+ // No any memory page allocated in pre-memory phase.\r
+ //\r
+ return;\r
+ }\r
+\r
+ OldMemPagesBase = PrivateData->MemoryPages.Base;\r
+ OldMemPagesSize = PrivateData->MemoryPages.Size;\r
+\r
+ MemoryAllocationHob = NULL;\r
+ Hob.Raw = GetFirstHob (EFI_HOB_TYPE_MEMORY_ALLOCATION);\r
+ while (Hob.Raw != NULL) {\r
+ MemoryAllocationHob = (EFI_HOB_MEMORY_ALLOCATION *) Hob.Raw;\r
+ if ((MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress >= OldMemPagesBase) &&\r
+ (MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress < (OldMemPagesBase + OldMemPagesSize))\r
+ ) {\r
+ if (PrivateData->MemoryPages.OffsetPositive) {\r
+ MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress += PrivateData->MemoryPages.Offset;\r
+ } else {\r
+ MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress -= PrivateData->MemoryPages.Offset;\r
+ }\r
+ }\r
+\r
+ Hob.Raw = GET_NEXT_HOB (Hob);\r
+ Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw);\r
+ }\r
+}\r
+\r
+/**\r
+ Internal function to build a HOB for the memory allocation.\r
+ It will search and reuse the unused(freed) memory allocation HOB,\r
+ or build memory allocation HOB normally if no unused(freed) memory allocation HOB found.\r
+\r
+ @param[in] BaseAddress The 64 bit physical address of the memory.\r
+ @param[in] Length The length of the memory allocation in bytes.\r
+ @param[in] MemoryType The type of memory allocated by this HOB.\r
+\r
+**/\r
+VOID\r
+InternalBuildMemoryAllocationHob (\r
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,\r
+ IN UINT64 Length,\r
+ IN EFI_MEMORY_TYPE MemoryType\r
+ )\r
+{\r
+ EFI_PEI_HOB_POINTERS Hob;\r
+ EFI_HOB_MEMORY_ALLOCATION *MemoryAllocationHob;\r
+\r
+ //\r
+ // Search unused(freed) memory allocation HOB.\r
+ //\r
+ MemoryAllocationHob = NULL;\r
+ Hob.Raw = GetFirstHob (EFI_HOB_TYPE_UNUSED);\r
+ while (Hob.Raw != NULL) {\r
+ if (Hob.Header->HobLength == sizeof (EFI_HOB_MEMORY_ALLOCATION)) {\r
+ MemoryAllocationHob = (EFI_HOB_MEMORY_ALLOCATION *) Hob.Raw;\r
+ break;\r
+ }\r
+\r
+ Hob.Raw = GET_NEXT_HOB (Hob);\r
+ Hob.Raw = GetNextHob (EFI_HOB_TYPE_UNUSED, Hob.Raw);\r
+ }\r
+\r
+ if (MemoryAllocationHob != NULL) {\r
+ //\r
+ // Reuse the unused(freed) memory allocation HOB.\r
+ //\r
+ MemoryAllocationHob->Header.HobType = EFI_HOB_TYPE_MEMORY_ALLOCATION;\r
+ ZeroMem (&(MemoryAllocationHob->AllocDescriptor.Name), sizeof (EFI_GUID));\r
+ MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress = BaseAddress;\r
+ MemoryAllocationHob->AllocDescriptor.MemoryLength = Length;\r
+ MemoryAllocationHob->AllocDescriptor.MemoryType = MemoryType;\r
+ //\r
+ // Zero the reserved space to match HOB spec\r
+ //\r
+ ZeroMem (MemoryAllocationHob->AllocDescriptor.Reserved, sizeof (MemoryAllocationHob->AllocDescriptor.Reserved));\r
+ } else {\r
+ //\r
+ // No unused(freed) memory allocation HOB found.\r
+ // Build memory allocation HOB normally.\r
+ //\r
+ BuildMemoryAllocationHob (\r
+ BaseAddress,\r
+ Length,\r
+ MemoryType\r
+ );\r
+ }\r
+}\r
+\r
+/**\r
+ Update or split memory allocation HOB for memory pages allocate and free.\r
+\r
+ @param[in, out] MemoryAllocationHob Pointer to the memory allocation HOB\r
+ that needs to be updated or split.\r
+ On output, it will be filled with\r
+ the input Memory, Bytes and MemoryType.\r
+ @param[in] Memory Memory to allocate or free.\r
+ @param[in] Bytes Bytes to allocate or free.\r
+ @param[in] MemoryType EfiConventionalMemory for pages free,\r
+ others for pages allocate.\r
+\r
+**/\r
+VOID\r
+UpdateOrSplitMemoryAllocationHob (\r
+ IN OUT EFI_HOB_MEMORY_ALLOCATION *MemoryAllocationHob,\r
+ IN EFI_PHYSICAL_ADDRESS Memory,\r
+ IN UINT64 Bytes,\r
+ IN EFI_MEMORY_TYPE MemoryType\r
+ )\r
+{\r
+ if ((Memory + Bytes) <\r
+ (MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress + MemoryAllocationHob->AllocDescriptor.MemoryLength)) {\r
+ //\r
+ // Last pages need to be split out.\r
+ //\r
+ InternalBuildMemoryAllocationHob (\r
+ Memory + Bytes,\r
+ (MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress + MemoryAllocationHob->AllocDescriptor.MemoryLength) - (Memory + Bytes),\r
+ MemoryAllocationHob->AllocDescriptor.MemoryType\r
+ );\r
+ }\r
+\r
+ if (Memory > MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress) {\r
+ //\r
+ // First pages need to be split out.\r
+ //\r
+ InternalBuildMemoryAllocationHob (\r
+ MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress,\r
+ Memory - MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress,\r
+ MemoryAllocationHob->AllocDescriptor.MemoryType\r
+ );\r
+ }\r
+\r
+ //\r
+ // Update the memory allocation HOB.\r
+ //\r
+ MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress = Memory;\r
+ MemoryAllocationHob->AllocDescriptor.MemoryLength = Bytes;\r
+ MemoryAllocationHob->AllocDescriptor.MemoryType = MemoryType;\r
+}\r
+\r
+/**\r
+ Merge adjacent free memory ranges in memory allocation HOBs.\r
+\r
+ @retval TRUE There are free memory ranges merged.\r
+ @retval FALSE No free memory ranges merged.\r
+\r
+**/\r
+BOOLEAN\r
+MergeFreeMemoryInMemoryAllocationHob (\r
+ VOID\r
+ )\r
+{\r
+ EFI_PEI_HOB_POINTERS Hob;\r
+ EFI_PEI_HOB_POINTERS Hob2;\r
+ EFI_HOB_MEMORY_ALLOCATION *MemoryHob;\r
+ EFI_HOB_MEMORY_ALLOCATION *MemoryHob2;\r
+ UINT64 Start;\r
+ UINT64 End;\r
+ BOOLEAN Merged;\r
+\r
+ Merged = FALSE;\r
+\r
+ Hob.Raw = GetFirstHob (EFI_HOB_TYPE_MEMORY_ALLOCATION);\r
+ while (Hob.Raw != NULL) {\r
+ if (Hob.MemoryAllocation->AllocDescriptor.MemoryType == EfiConventionalMemory) {\r
+ MemoryHob = (EFI_HOB_MEMORY_ALLOCATION *) Hob.Raw;\r
+ Start = MemoryHob->AllocDescriptor.MemoryBaseAddress;\r
+ End = MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength;\r
+\r
+ Hob2.Raw = GET_NEXT_HOB (Hob);\r
+ Hob2.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw);\r
+ while (Hob2.Raw != NULL) {\r
+ if (Hob2.MemoryAllocation->AllocDescriptor.MemoryType == EfiConventionalMemory) {\r
+ MemoryHob2 = (EFI_HOB_MEMORY_ALLOCATION *) Hob2.Raw;\r
+ if (Start == (MemoryHob2->AllocDescriptor.MemoryBaseAddress + MemoryHob2->AllocDescriptor.MemoryLength)) {\r
+ //\r
+ // Merge adjacent two free memory ranges.\r
+ //\r
+ MemoryHob2->AllocDescriptor.MemoryLength += MemoryHob->AllocDescriptor.MemoryLength;\r
+ Merged = TRUE;\r
+ //\r
+ // Mark MemoryHob to be unused(freed).\r
+ //\r
+ MemoryHob->Header.HobType = EFI_HOB_TYPE_UNUSED;\r
+ break;\r
+ } else if (End == MemoryHob2->AllocDescriptor.MemoryBaseAddress) {\r
+ //\r
+ // Merge adjacent two free memory ranges.\r
+ //\r
+ MemoryHob2->AllocDescriptor.MemoryBaseAddress = MemoryHob->AllocDescriptor.MemoryBaseAddress;\r
+ MemoryHob2->AllocDescriptor.MemoryLength += MemoryHob->AllocDescriptor.MemoryLength;\r
+ Merged = TRUE;\r
+ //\r
+ // Mark MemoryHob to be unused(freed).\r
+ //\r
+ MemoryHob->Header.HobType = EFI_HOB_TYPE_UNUSED;\r
+ break;\r
+ }\r
+ }\r
+ Hob2.Raw = GET_NEXT_HOB (Hob2);\r
+ Hob2.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob2.Raw);\r
+ }\r
+ }\r
+ Hob.Raw = GET_NEXT_HOB (Hob);\r
+ Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw);\r
+ }\r
+\r
+ return Merged;\r
+}\r
+\r
+/**\r
+ Find free memory by searching memory allocation HOBs.\r
+\r
+ @param[in] MemoryType The type of memory to allocate.\r
+ @param[in] Pages The number of contiguous 4 KB pages to allocate.\r
+ @param[in] Granularity Page allocation granularity.\r
+ @param[out] Memory Pointer to a physical address. On output, the address is set to the base\r
+ of the page range that was allocated.\r
+\r
+ @retval EFI_SUCCESS The memory range was successfully allocated.\r
+ @retval EFI_NOT_FOUND No memory allocation HOB with big enough free memory found.\r
+\r
+**/\r
+EFI_STATUS\r
+FindFreeMemoryFromMemoryAllocationHob (\r
+ IN EFI_MEMORY_TYPE MemoryType,\r
+ IN UINTN Pages,\r
+ IN UINTN Granularity,\r
+ OUT EFI_PHYSICAL_ADDRESS *Memory\r
+ )\r
+{\r
+ EFI_PEI_HOB_POINTERS Hob;\r
+ EFI_HOB_MEMORY_ALLOCATION *MemoryAllocationHob;\r
+ UINT64 Bytes;\r
+ EFI_PHYSICAL_ADDRESS BaseAddress;\r
+\r
+ Bytes = LShiftU64 (Pages, EFI_PAGE_SHIFT);\r
+\r
+ BaseAddress = 0;\r
+ MemoryAllocationHob = NULL;\r
+ Hob.Raw = GetFirstHob (EFI_HOB_TYPE_MEMORY_ALLOCATION);\r
+ while (Hob.Raw != NULL) {\r
+ if ((Hob.MemoryAllocation->AllocDescriptor.MemoryType == EfiConventionalMemory) &&\r
+ (Hob.MemoryAllocation->AllocDescriptor.MemoryLength >= Bytes)) {\r
+ //\r
+ // Found one memory allocation HOB with big enough free memory.\r
+ //\r
+ MemoryAllocationHob = (EFI_HOB_MEMORY_ALLOCATION *) Hob.Raw;\r
+ BaseAddress = MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress +\r
+ MemoryAllocationHob->AllocDescriptor.MemoryLength - Bytes;\r
+ //\r
+ // Make sure the granularity could be satisfied.\r
+ //\r
+ BaseAddress &= ~((EFI_PHYSICAL_ADDRESS) Granularity - 1);\r
+ if (BaseAddress >= MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress) {\r
+ break;\r
+ }\r
+ BaseAddress = 0;\r
+ MemoryAllocationHob = NULL;\r
+ }\r
+ //\r
+ // Continue to find.\r
+ //\r
+ Hob.Raw = GET_NEXT_HOB (Hob);\r
+ Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw);\r
+ }\r
+\r
+ if (MemoryAllocationHob != NULL) {\r
+ UpdateOrSplitMemoryAllocationHob (MemoryAllocationHob, BaseAddress, Bytes, MemoryType);\r
+ *Memory = BaseAddress;\r
+ return EFI_SUCCESS;\r
+ } else {\r
+ if (MergeFreeMemoryInMemoryAllocationHob ()) {\r
+ //\r
+ // Retry if there are free memory ranges merged.\r
+ //\r
+ return FindFreeMemoryFromMemoryAllocationHob (MemoryType, Pages, Granularity, Memory);\r
+ }\r
+ return EFI_NOT_FOUND;\r
+ }\r
+}\r
+\r
+/**\r
+ The purpose of the service is to publish an interface that allows\r
PEIMs to allocate memory ranges that are managed by the PEI Foundation.\r
\r
+ Prior to InstallPeiMemory() being called, PEI will allocate pages from the heap.\r
+ After InstallPeiMemory() is called, PEI will allocate pages within the region\r
+ of memory provided by InstallPeiMemory() service in a best-effort fashion.\r
+ Location-specific allocations are not managed by the PEI foundation code.\r
+\r
@param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r
@param MemoryType The type of memory to allocate.\r
@param Pages The number of contiguous 4 KB pages to allocate.\r
- @param Memory Pointer to a physical address. On output, the address is set to the base \r
+ @param Memory Pointer to a physical address. On output, the address is set to the base\r
of the page range that was allocated.\r
\r
@retval EFI_SUCCESS The memory range was successfully allocated.\r
@retval EFI_OUT_OF_RESOURCES The pages could not be allocated.\r
- @retval EFI_INVALID_PARAMETER Type is not equal to EfiLoaderCode, EfiLoaderData, EfiRuntimeServicesCode, \r
+ @retval EFI_INVALID_PARAMETER Type is not equal to EfiLoaderCode, EfiLoaderData, EfiRuntimeServicesCode,\r
EfiRuntimeServicesData, EfiBootServicesCode, EfiBootServicesData,\r
EfiACPIReclaimMemory, EfiReservedMemoryType, or EfiACPIMemoryNVS.\r
\r
OUT EFI_PHYSICAL_ADDRESS *Memory\r
)\r
{\r
+ EFI_STATUS Status;\r
PEI_CORE_INSTANCE *PrivateData;\r
EFI_PEI_HOB_POINTERS Hob;\r
EFI_PHYSICAL_ADDRESS *FreeMemoryTop;\r
\r
Granularity = DEFAULT_PAGE_ALLOCATION_GRANULARITY;\r
\r
+ PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r
+ Hob.Raw = PrivateData->HobList.Raw;\r
+\r
+ if (Hob.Raw == NULL) {\r
+ //\r
+ // HOB is not initialized yet.\r
+ //\r
+ return EFI_NOT_AVAILABLE_YET;\r
+ }\r
+\r
if (RUNTIME_PAGE_ALLOCATION_GRANULARITY > DEFAULT_PAGE_ALLOCATION_GRANULARITY &&\r
(MemoryType == EfiACPIReclaimMemory ||\r
MemoryType == EfiACPIMemoryNVS ||\r
Granularity / SIZE_1KB));\r
}\r
\r
- PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r
- Hob.Raw = PrivateData->HobList.Raw;\r
- \r
- //\r
- // Check if Hob already available\r
- //\r
- if (!PrivateData->PeiMemoryInstalled) {\r
+ if (!PrivateData->PeiMemoryInstalled && PrivateData->SwitchStackSignal) {\r
//\r
- // When PeiInstallMemory is called but temporary memory has *not* been moved to temporary memory,\r
+ // When PeiInstallMemory is called but temporary memory has *not* been moved to permanent memory,\r
// the AllocatePage will depend on the field of PEI_CORE_INSTANCE structure.\r
//\r
- if (!PrivateData->SwitchStackSignal) {\r
- return EFI_NOT_AVAILABLE_YET;\r
- } else {\r
- FreeMemoryTop = &(PrivateData->FreePhysicalMemoryTop);\r
- FreeMemoryBottom = &(PrivateData->PhysicalMemoryBegin);\r
- }\r
+ FreeMemoryTop = &(PrivateData->FreePhysicalMemoryTop);\r
+ FreeMemoryBottom = &(PrivateData->PhysicalMemoryBegin);\r
} else {\r
FreeMemoryTop = &(Hob.HandoffInformationTable->EfiFreeMemoryTop);\r
FreeMemoryBottom = &(Hob.HandoffInformationTable->EfiFreeMemoryBottom);\r
// Create a memory allocation HOB to cover\r
// the pages that we will lose to rounding\r
//\r
- BuildMemoryAllocationHob (\r
+ InternalBuildMemoryAllocationHob (\r
*(FreeMemoryTop),\r
Padding & ~(UINTN)EFI_PAGE_MASK,\r
EfiConventionalMemory\r
\r
//\r
// Verify that there is sufficient memory to satisfy the allocation.\r
- // For page allocation, the overhead sizeof (EFI_HOB_MEMORY_ALLOCATION) needs to be considered.\r
//\r
- if ((UINTN) (*FreeMemoryTop - *FreeMemoryBottom) < (UINTN) ALIGN_VALUE (sizeof (EFI_HOB_MEMORY_ALLOCATION), 8)) {\r
- DEBUG ((EFI_D_ERROR, "AllocatePages failed: No space to build memory allocation hob.\n"));\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
- RemainingPages = (UINTN)(*FreeMemoryTop - *FreeMemoryBottom - ALIGN_VALUE (sizeof (EFI_HOB_MEMORY_ALLOCATION), 8)) >> EFI_PAGE_SHIFT;\r
+ RemainingPages = (UINTN)(*FreeMemoryTop - *FreeMemoryBottom) >> EFI_PAGE_SHIFT;\r
//\r
// The number of remaining pages needs to be greater than or equal to that of the request pages.\r
//\r
Pages = ALIGN_VALUE (Pages, EFI_SIZE_TO_PAGES (Granularity));\r
if (RemainingPages < Pages) {\r
+ //\r
+ // Try to find free memory by searching memory allocation HOBs.\r
+ //\r
+ Status = FindFreeMemoryFromMemoryAllocationHob (MemoryType, Pages, Granularity, Memory);\r
+ if (!EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
DEBUG ((EFI_D_ERROR, "AllocatePages failed: No 0x%lx Pages is available.\n", (UINT64) Pages));\r
DEBUG ((EFI_D_ERROR, "There is only left 0x%lx pages memory resource to be allocated.\n", (UINT64) RemainingPages));\r
return EFI_OUT_OF_RESOURCES;\r
//\r
// Create a memory allocation HOB.\r
//\r
- BuildMemoryAllocationHob (\r
+ InternalBuildMemoryAllocationHob (\r
*(FreeMemoryTop),\r
Pages * EFI_PAGE_SIZE,\r
MemoryType\r
}\r
}\r
\r
+/**\r
+ Mark the memory allocation HOB to be unused(freed) and update *FreeMemoryTop\r
+ if MemoryBaseAddress == *FreeMemoryTop.\r
+\r
+ @param[in] PrivateData Pointer to PeiCore's private data structure.\r
+ @param[in, out] MemoryAllocationHobToFree Pointer to memory allocation HOB to be freed.\r
+\r
+**/\r
+VOID\r
+FreeMemoryAllocationHob (\r
+ IN PEI_CORE_INSTANCE *PrivateData,\r
+ IN OUT EFI_HOB_MEMORY_ALLOCATION *MemoryAllocationHobToFree\r
+ )\r
+{\r
+ EFI_PEI_HOB_POINTERS Hob;\r
+ EFI_PHYSICAL_ADDRESS *FreeMemoryTop;\r
+ EFI_HOB_MEMORY_ALLOCATION *MemoryAllocationHob;\r
+\r
+ Hob.Raw = PrivateData->HobList.Raw;\r
+\r
+ if (!PrivateData->PeiMemoryInstalled && PrivateData->SwitchStackSignal) {\r
+ //\r
+ // When PeiInstallMemory is called but temporary memory has *not* been moved to permanent memory,\r
+ // use the FreePhysicalMemoryTop field of PEI_CORE_INSTANCE structure.\r
+ //\r
+ FreeMemoryTop = &(PrivateData->FreePhysicalMemoryTop);\r
+ } else {\r
+ FreeMemoryTop = &(Hob.HandoffInformationTable->EfiFreeMemoryTop);\r
+ }\r
+\r
+ if (MemoryAllocationHobToFree->AllocDescriptor.MemoryBaseAddress == *FreeMemoryTop) {\r
+ //\r
+ // Update *FreeMemoryTop.\r
+ //\r
+ *FreeMemoryTop += MemoryAllocationHobToFree->AllocDescriptor.MemoryLength;\r
+ //\r
+ // Mark the memory allocation HOB to be unused(freed).\r
+ //\r
+ MemoryAllocationHobToFree->Header.HobType = EFI_HOB_TYPE_UNUSED;\r
+\r
+ MemoryAllocationHob = NULL;\r
+ Hob.Raw = GetFirstHob (EFI_HOB_TYPE_MEMORY_ALLOCATION);\r
+ while (Hob.Raw != NULL) {\r
+ if ((Hob.MemoryAllocation->AllocDescriptor.MemoryType == EfiConventionalMemory) &&\r
+ (Hob.MemoryAllocation->AllocDescriptor.MemoryBaseAddress == *FreeMemoryTop)) {\r
+ //\r
+ // Found memory allocation HOB that has EfiConventionalMemory MemoryType and\r
+ // MemoryBaseAddress == new *FreeMemoryTop.\r
+ //\r
+ MemoryAllocationHob = (EFI_HOB_MEMORY_ALLOCATION *) Hob.Raw;\r
+ break;\r
+ }\r
+ Hob.Raw = GET_NEXT_HOB (Hob);\r
+ Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw);\r
+ }\r
+ //\r
+ // Free memory allocation HOB iteratively.\r
+ //\r
+ if (MemoryAllocationHob != NULL) {\r
+ FreeMemoryAllocationHob (PrivateData, MemoryAllocationHob);\r
+ }\r
+ }\r
+}\r
+\r
+/**\r
+ Frees memory pages.\r
+\r
+ @param[in] PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation.\r
+ @param[in] Memory The base physical address of the pages to be freed.\r
+ @param[in] Pages The number of contiguous 4 KB pages to free.\r
+\r
+ @retval EFI_SUCCESS The requested pages were freed.\r
+ @retval EFI_INVALID_PARAMETER Memory is not a page-aligned address or Pages is invalid.\r
+ @retval EFI_NOT_FOUND The requested memory pages were not allocated with\r
+ AllocatePages().\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+PeiFreePages (\r
+ IN CONST EFI_PEI_SERVICES **PeiServices,\r
+ IN EFI_PHYSICAL_ADDRESS Memory,\r
+ IN UINTN Pages\r
+ )\r
+{\r
+ PEI_CORE_INSTANCE *PrivateData;\r
+ UINT64 Bytes;\r
+ UINT64 Start;\r
+ UINT64 End;\r
+ EFI_PEI_HOB_POINTERS Hob;\r
+ EFI_HOB_MEMORY_ALLOCATION *MemoryAllocationHob;\r
+\r
+ Bytes = LShiftU64 (Pages, EFI_PAGE_SHIFT);\r
+ Start = Memory;\r
+ End = Start + Bytes - 1;\r
+\r
+ if (Pages == 0 || ((Start & EFI_PAGE_MASK) != 0) || (Start >= End)) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS (PeiServices);\r
+ Hob.Raw = PrivateData->HobList.Raw;\r
+\r
+ if (Hob.Raw == NULL) {\r
+ //\r
+ // HOB is not initialized yet.\r
+ //\r
+ return EFI_NOT_AVAILABLE_YET;\r
+ }\r
+\r
+ MemoryAllocationHob = NULL;\r
+ Hob.Raw = GetFirstHob (EFI_HOB_TYPE_MEMORY_ALLOCATION);\r
+ while (Hob.Raw != NULL) {\r
+ if ((Hob.MemoryAllocation->AllocDescriptor.MemoryType != EfiConventionalMemory) &&\r
+ (Memory >= Hob.MemoryAllocation->AllocDescriptor.MemoryBaseAddress) &&\r
+ ((Memory + Bytes) <= (Hob.MemoryAllocation->AllocDescriptor.MemoryBaseAddress + Hob.MemoryAllocation->AllocDescriptor.MemoryLength))) {\r
+ //\r
+ // Found the memory allocation HOB that includes the memory pages to be freed.\r
+ //\r
+ MemoryAllocationHob = (EFI_HOB_MEMORY_ALLOCATION *) Hob.Raw;\r
+ break;\r
+ }\r
+ Hob.Raw = GET_NEXT_HOB (Hob);\r
+ Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw);\r
+ }\r
+\r
+ if (MemoryAllocationHob != NULL) {\r
+ UpdateOrSplitMemoryAllocationHob (MemoryAllocationHob, Memory, Bytes, EfiConventionalMemory);\r
+ FreeMemoryAllocationHob (PrivateData, MemoryAllocationHob);\r
+ return EFI_SUCCESS;\r
+ } else {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+}\r
+\r
/**\r
\r
Pool allocation service. Before permanent memory is discoveried, the pool will\r
projects / mirror_edk2.git / blobdiff