/** @file\r
UEFI Memory page management functions.\r
\r
-Copyright (c) 2007 - 2008, Intel Corporation. <BR>\r
-All rights reserved. This program and the accompanying materials\r
+Copyright (c) 2007 - 2014, 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
http://opensource.org/licenses/bsd-license.php\r
**/\r
\r
#include "DxeMain.h"\r
+#include "Imem.h"\r
\r
#define EFI_DEFAULT_PAGE_ALLOCATION_ALIGNMENT (EFI_PAGE_SIZE)\r
\r
//\r
-// Entry for tracking the memory regions for each memory type to help cooalese like memory types\r
+// Entry for tracking the memory regions for each memory type to coalesce similar memory types\r
//\r
typedef struct {\r
EFI_PHYSICAL_ADDRESS BaseAddress;\r
UINTN InformationIndex;\r
BOOLEAN Special;\r
BOOLEAN Runtime;\r
-} EFI_MEMORY_TYPE_STAISTICS;\r
+} EFI_MEMORY_TYPE_STATISTICS;\r
\r
//\r
// MemoryMap - The current memory map\r
//\r
UINTN mMemoryMapKey = 0;\r
\r
-//\r
-// mMapStack - space to use as temp storage to build new map descriptors\r
-// mMapDepth - depth of new descriptor stack\r
-//\r
-\r
#define MAX_MAP_DEPTH 6\r
+\r
+///\r
+/// mMapDepth - depth of new descriptor stack\r
+///\r
UINTN mMapDepth = 0;\r
+///\r
+/// mMapStack - space to use as temp storage to build new map descriptors\r
+///\r
MEMORY_MAP mMapStack[MAX_MAP_DEPTH];\r
UINTN mFreeMapStack = 0;\r
-//\r
-// This list maintain the free memory map list\r
-//\r
+///\r
+/// This list maintain the free memory map list\r
+///\r
LIST_ENTRY mFreeMemoryMapEntryList = INITIALIZE_LIST_HEAD_VARIABLE (mFreeMemoryMapEntryList);\r
BOOLEAN mMemoryTypeInformationInitialized = FALSE;\r
\r
-EFI_MEMORY_TYPE_STAISTICS mMemoryTypeStatistics[EfiMaxMemoryType + 1] = {\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, FALSE }, // EfiReservedMemoryType\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiLoaderCode\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiLoaderData\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiBootServicesCode\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiBootServicesData\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, TRUE }, // EfiRuntimeServicesCode\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, TRUE }, // EfiRuntimeServicesData\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiConventionalMemory\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiUnusableMemory\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, FALSE }, // EfiACPIReclaimMemory\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, FALSE }, // EfiACPIMemoryNVS\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiMemoryMappedIO\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiMemoryMappedIOPortSpace\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, TRUE }, // EfiPalCode\r
- { 0, EFI_MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE } // EfiMaxMemoryType\r
+EFI_MEMORY_TYPE_STATISTICS mMemoryTypeStatistics[EfiMaxMemoryType + 1] = {\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, FALSE }, // EfiReservedMemoryType\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiLoaderCode\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiLoaderData\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiBootServicesCode\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiBootServicesData\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, TRUE }, // EfiRuntimeServicesCode\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, TRUE }, // EfiRuntimeServicesData\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiConventionalMemory\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiUnusableMemory\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, FALSE }, // EfiACPIReclaimMemory\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, FALSE }, // EfiACPIMemoryNVS\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiMemoryMappedIO\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiMemoryMappedIOPortSpace\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, TRUE }, // EfiPalCode\r
+ { 0, MAX_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE } // EfiMaxMemoryType\r
};\r
\r
-EFI_PHYSICAL_ADDRESS mDefaultMaximumAddress = EFI_MAX_ADDRESS;\r
+EFI_PHYSICAL_ADDRESS mDefaultMaximumAddress = MAX_ADDRESS;\r
+EFI_PHYSICAL_ADDRESS mDefaultBaseAddress = MAX_ADDRESS;\r
\r
EFI_MEMORY_TYPE_INFORMATION gMemoryTypeInformation[EfiMaxMemoryType + 1] = {\r
{ EfiReservedMemoryType, 0 },\r
{ EfiPalCode, 0 },\r
{ EfiMaxMemoryType, 0 }\r
};\r
-\r
//\r
-// Internal prototypes\r
+// Only used when load module at fixed address feature is enabled. True means the memory is alreay successfully allocated\r
+// and ready to load the module in to specified address.or else, the memory is not ready and module will be loaded at a \r
+// address assigned by DXE core.\r
//\r
-/**\r
- Find untested but initialized memory regions in GCD map and convert them to be DXE allocatable.\r
-\r
-**/\r
-VOID\r
-PromoteMemoryResource (\r
- VOID\r
- );\r
-\r
-/**\r
- Internal function. Adds a ranges to the memory map.\r
- The range must not already exist in the map.\r
-\r
- @param Type The type of memory range to add\r
- @param Start The starting address in the memory range Must be\r
- paged aligned\r
- @param End The last address in the range Must be the last\r
- byte of a page\r
- @param Attribute The attributes of the memory range to add\r
-\r
-**/\r
-VOID\r
-CoreAddRange (\r
- IN EFI_MEMORY_TYPE Type,\r
- IN EFI_PHYSICAL_ADDRESS Start,\r
- IN EFI_PHYSICAL_ADDRESS End,\r
- IN UINT64 Attribute\r
- );\r
-\r
-/**\r
- Internal function. Moves any memory descriptors that are on the\r
- temporary descriptor stack to heap.\r
-\r
-**/\r
-VOID\r
-CoreFreeMemoryMapStack (\r
- VOID\r
- );\r
-\r
-/**\r
- Internal function. Converts a memory range to the specified type.\r
- The range must exist in the memory map.\r
-\r
- @param Start The first address of the range Must be page\r
- aligned\r
- @param NumberOfPages The number of pages to convert\r
- @param NewType The new type for the memory range\r
-\r
- @retval EFI_INVALID_PARAMETER Invalid parameter\r
- @retval EFI_NOT_FOUND Could not find a descriptor cover the specified\r
- range or convertion not allowed.\r
- @retval EFI_SUCCESS Successfully converts the memory range to the\r
- specified type.\r
-\r
-**/\r
-EFI_STATUS\r
-CoreConvertPages (\r
- IN UINT64 Start,\r
- IN UINT64 NumberOfPages,\r
- IN EFI_MEMORY_TYPE NewType\r
- );\r
-\r
-/**\r
- Internal function. Removes a descriptor entry.\r
-\r
- @param Entry The entry to remove\r
-\r
-**/\r
-VOID\r
-RemoveMemoryMapEntry (\r
- IN OUT MEMORY_MAP *Entry\r
- );\r
-\r
-/**\r
- Internal function. Deque a descriptor entry from the mFreeMemoryMapEntryList.\r
- If the list is emtry, then allocate a new page to refuel the list.\r
- Please Note this algorithm to allocate the memory map descriptor has a property\r
- that the memory allocated for memory entries always grows, and will never really be freed\r
- For example, if the current boot uses 2000 memory map entries at the maximum point, but\r
- ends up with only 50 at the time the OS is booted, then the memory associated with the 1950\r
- memory map entries is still allocated from EfiBootServicesMemory.\r
-\r
-\r
- @return The Memory map descriptor dequed from the mFreeMemoryMapEntryList\r
-\r
-**/\r
-MEMORY_MAP *\r
-AllocateMemoryMapEntry (\r
- VOID\r
- );\r
-\r
+GLOBAL_REMOVE_IF_UNREFERENCED BOOLEAN gLoadFixedAddressCodeMemoryReady = FALSE;\r
\r
/**\r
Enter critical section by gaining lock on gMemoryLock.\r
}\r
\r
\r
-/**\r
- Find untested but initialized memory regions in GCD map and convert them to be DXE allocatable.\r
-\r
-**/\r
-VOID\r
-PromoteMemoryResource (\r
- VOID\r
- )\r
-{\r
- LIST_ENTRY *Link;\r
- EFI_GCD_MAP_ENTRY *Entry;\r
-\r
- DEBUG ((DEBUG_ERROR | DEBUG_PAGE, "Promote the memory resource\n"));\r
-\r
- CoreAcquireGcdMemoryLock ();\r
-\r
- Link = mGcdMemorySpaceMap.ForwardLink;\r
- while (Link != &mGcdMemorySpaceMap) {\r
-\r
- Entry = CR (Link, EFI_GCD_MAP_ENTRY, Link, EFI_GCD_MAP_SIGNATURE);\r
-\r
- if (Entry->GcdMemoryType == EfiGcdMemoryTypeReserved &&\r
- Entry->EndAddress < EFI_MAX_ADDRESS &&\r
- (Entry->Capabilities & (EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED | EFI_MEMORY_TESTED)) ==\r
- (EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED)) {\r
- //\r
- // Update the GCD map\r
- //\r
- Entry->GcdMemoryType = EfiGcdMemoryTypeSystemMemory;\r
- Entry->Capabilities |= EFI_MEMORY_TESTED;\r
- Entry->ImageHandle = gDxeCoreImageHandle;\r
- Entry->DeviceHandle = NULL;\r
-\r
- //\r
- // Add to allocable system memory resource\r
- //\r
-\r
- CoreAddRange (\r
- EfiConventionalMemory,\r
- Entry->BaseAddress,\r
- Entry->EndAddress,\r
- Entry->Capabilities & ~(EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED | EFI_MEMORY_TESTED | EFI_MEMORY_RUNTIME)\r
- );\r
- CoreFreeMemoryMapStack ();\r
-\r
- }\r
-\r
- Link = Link->ForwardLink;\r
- }\r
-\r
- CoreReleaseGcdMemoryLock ();\r
-\r
- return;\r
-}\r
\r
\r
/**\r
- Called to initialize the memory map and add descriptors to\r
- the current descriptor list.\r
- The first descriptor that is added must be general usable\r
- memory as the addition allocates heap.\r
-\r
- @param Type The type of memory to add\r
- @param Start The starting address in the memory range Must be\r
- page aligned\r
- @param NumberOfPages The number of pages in the range\r
- @param Attribute Attributes of the memory to add\r
+ Internal function. Removes a descriptor entry.\r
\r
- @return None. The range is added to the memory map\r
+ @param Entry The entry to remove\r
\r
**/\r
VOID\r
-CoreAddMemoryDescriptor (\r
- IN EFI_MEMORY_TYPE Type,\r
- IN EFI_PHYSICAL_ADDRESS Start,\r
- IN UINT64 NumberOfPages,\r
- IN UINT64 Attribute\r
+RemoveMemoryMapEntry (\r
+ IN OUT MEMORY_MAP *Entry\r
)\r
{\r
- EFI_PHYSICAL_ADDRESS End;\r
- EFI_STATUS Status;\r
- UINTN Index;\r
- UINTN FreeIndex;\r
-\r
- if ((Start & EFI_PAGE_MASK) != 0) {\r
- return;\r
- }\r
-\r
- if (Type >= EfiMaxMemoryType && Type <= 0x7fffffff) {\r
- return;\r
- }\r
-\r
- CoreAcquireMemoryLock ();\r
- End = Start + LShiftU64 (NumberOfPages, EFI_PAGE_SHIFT) - 1;\r
- CoreAddRange (Type, Start, End, Attribute);\r
- CoreFreeMemoryMapStack ();\r
- CoreReleaseMemoryLock ();\r
-\r
- //\r
- // Check to see if the statistics for the different memory types have already been established\r
- //\r
- if (mMemoryTypeInformationInitialized) {\r
- return;\r
- }\r
-\r
- //\r
- // Loop through each memory type in the order specified by the gMemoryTypeInformation[] array\r
- //\r
- for (Index = 0; gMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {\r
- //\r
- // Make sure the memory type in the gMemoryTypeInformation[] array is valid\r
- //\r
- Type = (EFI_MEMORY_TYPE) (gMemoryTypeInformation[Index].Type);\r
- if (Type < 0 || Type > EfiMaxMemoryType) {\r
- continue;\r
- }\r
-\r
- if (gMemoryTypeInformation[Index].NumberOfPages != 0) {\r
- //\r
- // Allocate pages for the current memory type from the top of available memory\r
- //\r
- Status = CoreAllocatePages (\r
- AllocateAnyPages,\r
- Type,\r
- gMemoryTypeInformation[Index].NumberOfPages,\r
- &mMemoryTypeStatistics[Type].BaseAddress\r
- );\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // If an error occurs allocating the pages for the current memory type, then\r
- // free all the pages allocates for the previous memory types and return. This\r
- // operation with be retied when/if more memory is added to the system\r
- //\r
- for (FreeIndex = 0; FreeIndex < Index; FreeIndex++) {\r
- //\r
- // Make sure the memory type in the gMemoryTypeInformation[] array is valid\r
- //\r
- Type = (EFI_MEMORY_TYPE) (gMemoryTypeInformation[FreeIndex].Type);\r
- if (Type < 0 || Type > EfiMaxMemoryType) {\r
- continue;\r
- }\r
-\r
- if (gMemoryTypeInformation[FreeIndex].NumberOfPages != 0) {\r
- CoreFreePages (\r
- mMemoryTypeStatistics[Type].BaseAddress,\r
- gMemoryTypeInformation[FreeIndex].NumberOfPages\r
- );\r
- mMemoryTypeStatistics[Type].BaseAddress = 0;\r
- mMemoryTypeStatistics[Type].MaximumAddress = EFI_MAX_ADDRESS;\r
- }\r
- }\r
- return;\r
- }\r
-\r
- //\r
- // Compute the address at the top of the current statistics\r
- //\r
- mMemoryTypeStatistics[Type].MaximumAddress =\r
- mMemoryTypeStatistics[Type].BaseAddress +\r
- LShiftU64 (gMemoryTypeInformation[Index].NumberOfPages, EFI_PAGE_SHIFT) - 1;\r
-\r
- //\r
- // If the current base address is the lowest address so far, then update the default\r
- // maximum address\r
- //\r
- if (mMemoryTypeStatistics[Type].BaseAddress < mDefaultMaximumAddress) {\r
- mDefaultMaximumAddress = mMemoryTypeStatistics[Type].BaseAddress - 1;\r
- }\r
- }\r
- }\r
+ RemoveEntryList (&Entry->Link);\r
+ Entry->Link.ForwardLink = NULL;\r
\r
- //\r
- // There was enough system memory for all the the memory types were allocated. So,\r
- // those memory areas can be freed for future allocations, and all future memory\r
- // allocations can occur within their respective bins\r
- //\r
- for (Index = 0; gMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {\r
+ if (Entry->FromPages) {\r
//\r
- // Make sure the memory type in the gMemoryTypeInformation[] array is valid\r
+ // Insert the free memory map descriptor to the end of mFreeMemoryMapEntryList\r
//\r
- Type = (EFI_MEMORY_TYPE) (gMemoryTypeInformation[Index].Type);\r
- if (Type < 0 || Type > EfiMaxMemoryType) {\r
- continue;\r
- }\r
-\r
- if (gMemoryTypeInformation[Index].NumberOfPages != 0) {\r
- CoreFreePages (\r
- mMemoryTypeStatistics[Type].BaseAddress,\r
- gMemoryTypeInformation[Index].NumberOfPages\r
- );\r
- mMemoryTypeStatistics[Type].NumberOfPages = gMemoryTypeInformation[Index].NumberOfPages;\r
- gMemoryTypeInformation[Index].NumberOfPages = 0;\r
- }\r
- }\r
-\r
- //\r
- // If the number of pages reserved for a memory type is 0, then all allocations for that type\r
- // should be in the default range.\r
- //\r
- for (Type = (EFI_MEMORY_TYPE) 0; Type < EfiMaxMemoryType; Type++) {\r
- for (Index = 0; gMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {\r
- if (Type == (EFI_MEMORY_TYPE)gMemoryTypeInformation[Index].Type) {\r
- mMemoryTypeStatistics[Type].InformationIndex = Index;\r
- }\r
- }\r
- mMemoryTypeStatistics[Type].CurrentNumberOfPages = 0;\r
- if (mMemoryTypeStatistics[Type].MaximumAddress == EFI_MAX_ADDRESS) {\r
- mMemoryTypeStatistics[Type].MaximumAddress = mDefaultMaximumAddress;\r
- }\r
+ InsertTailList (&mFreeMemoryMapEntryList, &Entry->Link);\r
}\r
-\r
- mMemoryTypeInformationInitialized = TRUE;\r
}\r
\r
-\r
-\r
/**\r
Internal function. Adds a ranges to the memory map.\r
The range must not already exist in the map.\r
ASSERT_LOCKED (&gMemoryLock);\r
\r
DEBUG ((DEBUG_PAGE, "AddRange: %lx-%lx to %d\n", Start, End, Type));\r
-\r
+ \r
+ //\r
+ // If memory of type EfiConventionalMemory is being added that includes the page \r
+ // starting at address 0, then zero the page starting at address 0. This has \r
+ // two benifits. It helps find NULL pointer bugs and it also maximizes \r
+ // compatibility with operating systems that may evaluate memory in this page \r
+ // for legacy data structures. If memory of any other type is added starting \r
+ // at address 0, then do not zero the page at address 0 because the page is being \r
+ // used for other purposes.\r
+ // \r
+ if (Type == EfiConventionalMemory && Start == 0 && (End >= EFI_PAGE_SIZE - 1)) {\r
+ SetMem ((VOID *)(UINTN)Start, EFI_PAGE_SIZE, 0);\r
+ }\r
+ \r
//\r
// Memory map being altered so updated key\r
//\r
return ;\r
}\r
\r
+/**\r
+ Internal function. Deque a descriptor entry from the mFreeMemoryMapEntryList.\r
+ If the list is emtry, then allocate a new page to refuel the list.\r
+ Please Note this algorithm to allocate the memory map descriptor has a property\r
+ that the memory allocated for memory entries always grows, and will never really be freed\r
+ For example, if the current boot uses 2000 memory map entries at the maximum point, but\r
+ ends up with only 50 at the time the OS is booted, then the memory associated with the 1950\r
+ memory map entries is still allocated from EfiBootServicesMemory.\r
+\r
+\r
+ @return The Memory map descriptor dequed from the mFreeMemoryMapEntryList\r
+\r
+**/\r
+MEMORY_MAP *\r
+AllocateMemoryMapEntry (\r
+ VOID\r
+ )\r
+{\r
+ MEMORY_MAP* FreeDescriptorEntries;\r
+ MEMORY_MAP* Entry;\r
+ UINTN Index;\r
+\r
+ if (IsListEmpty (&mFreeMemoryMapEntryList)) {\r
+ //\r
+ // The list is empty, to allocate one page to refuel the list\r
+ //\r
+ FreeDescriptorEntries = CoreAllocatePoolPages (EfiBootServicesData, EFI_SIZE_TO_PAGES(DEFAULT_PAGE_ALLOCATION), DEFAULT_PAGE_ALLOCATION);\r
+ if(FreeDescriptorEntries != NULL) {\r
+ //\r
+ // Enque the free memmory map entries into the list\r
+ //\r
+ for (Index = 0; Index< DEFAULT_PAGE_ALLOCATION / sizeof(MEMORY_MAP); Index++) {\r
+ FreeDescriptorEntries[Index].Signature = MEMORY_MAP_SIGNATURE;\r
+ InsertTailList (&mFreeMemoryMapEntryList, &FreeDescriptorEntries[Index].Link);\r
+ }\r
+ } else {\r
+ return NULL;\r
+ }\r
+ }\r
+ //\r
+ // dequeue the first descriptor from the list\r
+ //\r
+ Entry = CR (mFreeMemoryMapEntryList.ForwardLink, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r
+ RemoveEntryList (&Entry->Link);\r
+\r
+ return Entry;\r
+}\r
+\r
\r
/**\r
Internal function. Moves any memory descriptors that are on the\r
Entry->FromPages = TRUE;\r
\r
//\r
- // Find insertion location\r
+ // Find insertion location\r
+ //\r
+ for (Link2 = gMemoryMap.ForwardLink; Link2 != &gMemoryMap; Link2 = Link2->ForwardLink) {\r
+ Entry2 = CR (Link2, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r
+ if (Entry2->FromPages && Entry2->Start > Entry->Start) {\r
+ break;\r
+ }\r
+ }\r
+\r
+ InsertTailList (Link2, &Entry->Link);\r
+\r
+ } else {\r
+ //\r
+ // This item of mMapStack[mMapDepth] has already been dequeued from gMemoryMap list,\r
+ // so here no need to move it to memory.\r
+ //\r
+ InsertTailList (&mFreeMemoryMapEntryList, &Entry->Link);\r
+ }\r
+ }\r
+\r
+ mFreeMapStack -= 1;\r
+}\r
+\r
+/**\r
+ Find untested but initialized memory regions in GCD map and convert them to be DXE allocatable.\r
+\r
+**/\r
+BOOLEAN\r
+PromoteMemoryResource (\r
+ VOID\r
+ )\r
+{\r
+ LIST_ENTRY *Link;\r
+ EFI_GCD_MAP_ENTRY *Entry;\r
+ BOOLEAN Promoted;\r
+\r
+ DEBUG ((DEBUG_PAGE, "Promote the memory resource\n"));\r
+\r
+ CoreAcquireGcdMemoryLock ();\r
+\r
+ Promoted = FALSE;\r
+ Link = mGcdMemorySpaceMap.ForwardLink;\r
+ while (Link != &mGcdMemorySpaceMap) {\r
+\r
+ Entry = CR (Link, EFI_GCD_MAP_ENTRY, Link, EFI_GCD_MAP_SIGNATURE);\r
+\r
+ if (Entry->GcdMemoryType == EfiGcdMemoryTypeReserved &&\r
+ Entry->EndAddress < MAX_ADDRESS &&\r
+ (Entry->Capabilities & (EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED | EFI_MEMORY_TESTED)) ==\r
+ (EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED)) {\r
+ //\r
+ // Update the GCD map\r
+ //\r
+ Entry->GcdMemoryType = EfiGcdMemoryTypeSystemMemory;\r
+ Entry->Capabilities |= EFI_MEMORY_TESTED;\r
+ Entry->ImageHandle = gDxeCoreImageHandle;\r
+ Entry->DeviceHandle = NULL;\r
+\r
+ //\r
+ // Add to allocable system memory resource\r
+ //\r
+\r
+ CoreAddRange (\r
+ EfiConventionalMemory,\r
+ Entry->BaseAddress,\r
+ Entry->EndAddress,\r
+ Entry->Capabilities & ~(EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED | EFI_MEMORY_TESTED | EFI_MEMORY_RUNTIME)\r
+ );\r
+ CoreFreeMemoryMapStack ();\r
+\r
+ Promoted = TRUE;\r
+ }\r
+\r
+ Link = Link->ForwardLink;\r
+ }\r
+\r
+ CoreReleaseGcdMemoryLock ();\r
+\r
+ return Promoted;\r
+}\r
+/**\r
+ This function try to allocate Runtime code & Boot time code memory range. If LMFA enabled, 2 patchable PCD \r
+ PcdLoadFixAddressRuntimeCodePageNumber & PcdLoadFixAddressBootTimeCodePageNumber which are set by tools will record the \r
+ size of boot time and runtime code.\r
+\r
+**/\r
+VOID\r
+CoreLoadingFixedAddressHook (\r
+ VOID\r
+ )\r
+{\r
+ UINT32 RuntimeCodePageNumber;\r
+ UINT32 BootTimeCodePageNumber;\r
+ EFI_PHYSICAL_ADDRESS RuntimeCodeBase;\r
+ EFI_PHYSICAL_ADDRESS BootTimeCodeBase;\r
+ EFI_STATUS Status;\r
+\r
+ //\r
+ // Make sure these 2 areas are not initialzied.\r
+ //\r
+ if (!gLoadFixedAddressCodeMemoryReady) { \r
+ RuntimeCodePageNumber = PcdGet32(PcdLoadFixAddressRuntimeCodePageNumber);\r
+ BootTimeCodePageNumber= PcdGet32(PcdLoadFixAddressBootTimeCodePageNumber);\r
+ RuntimeCodeBase = (EFI_PHYSICAL_ADDRESS)(gLoadModuleAtFixAddressConfigurationTable.DxeCodeTopAddress - EFI_PAGES_TO_SIZE (RuntimeCodePageNumber));\r
+ BootTimeCodeBase = (EFI_PHYSICAL_ADDRESS)(RuntimeCodeBase - EFI_PAGES_TO_SIZE (BootTimeCodePageNumber));\r
+ //\r
+ // Try to allocate runtime memory.\r
+ //\r
+ Status = CoreAllocatePages (\r
+ AllocateAddress,\r
+ EfiRuntimeServicesCode,\r
+ RuntimeCodePageNumber,\r
+ &RuntimeCodeBase\r
+ );\r
+ if (EFI_ERROR(Status)) {\r
+ //\r
+ // Runtime memory allocation failed \r
+ //\r
+ return;\r
+ }\r
+ //\r
+ // Try to allocate boot memory.\r
+ //\r
+ Status = CoreAllocatePages (\r
+ AllocateAddress,\r
+ EfiBootServicesCode,\r
+ BootTimeCodePageNumber,\r
+ &BootTimeCodeBase\r
+ );\r
+ if (EFI_ERROR(Status)) {\r
+ //\r
+ // boot memory allocation failed. Free Runtime code range and will try the allocation again when \r
+ // new memory range is installed.\r
+ //\r
+ CoreFreePages (\r
+ RuntimeCodeBase,\r
+ RuntimeCodePageNumber\r
+ );\r
+ return;\r
+ }\r
+ gLoadFixedAddressCodeMemoryReady = TRUE;\r
+ } \r
+ return;\r
+} \r
+\r
+/**\r
+ Called to initialize the memory map and add descriptors to\r
+ the current descriptor list.\r
+ The first descriptor that is added must be general usable\r
+ memory as the addition allocates heap.\r
+\r
+ @param Type The type of memory to add\r
+ @param Start The starting address in the memory range Must be\r
+ page aligned\r
+ @param NumberOfPages The number of pages in the range\r
+ @param Attribute Attributes of the memory to add\r
+\r
+ @return None. The range is added to the memory map\r
+\r
+**/\r
+VOID\r
+CoreAddMemoryDescriptor (\r
+ IN EFI_MEMORY_TYPE Type,\r
+ IN EFI_PHYSICAL_ADDRESS Start,\r
+ IN UINT64 NumberOfPages,\r
+ IN UINT64 Attribute\r
+ )\r
+{\r
+ EFI_PHYSICAL_ADDRESS End;\r
+ EFI_STATUS Status;\r
+ UINTN Index;\r
+ UINTN FreeIndex;\r
+ \r
+ if ((Start & EFI_PAGE_MASK) != 0) {\r
+ return;\r
+ }\r
+\r
+ if (Type >= EfiMaxMemoryType && Type <= 0x7fffffff) {\r
+ return;\r
+ }\r
+ CoreAcquireMemoryLock ();\r
+ End = Start + LShiftU64 (NumberOfPages, EFI_PAGE_SHIFT) - 1;\r
+ CoreAddRange (Type, Start, End, Attribute);\r
+ CoreFreeMemoryMapStack ();\r
+ CoreReleaseMemoryLock ();\r
+\r
+ //\r
+ // If Loading Module At Fixed Address feature is enabled. try to allocate memory with Runtime code & Boot time code type\r
+ //\r
+ if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r
+ CoreLoadingFixedAddressHook();\r
+ }\r
+ \r
+ //\r
+ // Check to see if the statistics for the different memory types have already been established\r
+ //\r
+ if (mMemoryTypeInformationInitialized) {\r
+ return;\r
+ }\r
+\r
+ \r
+ //\r
+ // Loop through each memory type in the order specified by the gMemoryTypeInformation[] array\r
+ //\r
+ for (Index = 0; gMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {\r
+ //\r
+ // Make sure the memory type in the gMemoryTypeInformation[] array is valid\r
+ //\r
+ Type = (EFI_MEMORY_TYPE) (gMemoryTypeInformation[Index].Type);\r
+ if ((UINT32)Type > EfiMaxMemoryType) {\r
+ continue;\r
+ }\r
+ if (gMemoryTypeInformation[Index].NumberOfPages != 0) {\r
+ //\r
+ // Allocate pages for the current memory type from the top of available memory\r
//\r
- for (Link2 = gMemoryMap.ForwardLink; Link2 != &gMemoryMap; Link2 = Link2->ForwardLink) {\r
- Entry2 = CR (Link2, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r
- if (Entry2->FromPages && Entry2->Start > Entry->Start) {\r
- break;\r
+ Status = CoreAllocatePages (\r
+ AllocateAnyPages,\r
+ Type,\r
+ gMemoryTypeInformation[Index].NumberOfPages,\r
+ &mMemoryTypeStatistics[Type].BaseAddress\r
+ );\r
+ if (EFI_ERROR (Status)) {\r
+ //\r
+ // If an error occurs allocating the pages for the current memory type, then\r
+ // free all the pages allocates for the previous memory types and return. This\r
+ // operation with be retied when/if more memory is added to the system\r
+ //\r
+ for (FreeIndex = 0; FreeIndex < Index; FreeIndex++) {\r
+ //\r
+ // Make sure the memory type in the gMemoryTypeInformation[] array is valid\r
+ //\r
+ Type = (EFI_MEMORY_TYPE) (gMemoryTypeInformation[FreeIndex].Type);\r
+ if ((UINT32)Type > EfiMaxMemoryType) {\r
+ continue;\r
+ }\r
+\r
+ if (gMemoryTypeInformation[FreeIndex].NumberOfPages != 0) {\r
+ CoreFreePages (\r
+ mMemoryTypeStatistics[Type].BaseAddress,\r
+ gMemoryTypeInformation[FreeIndex].NumberOfPages\r
+ );\r
+ mMemoryTypeStatistics[Type].BaseAddress = 0;\r
+ mMemoryTypeStatistics[Type].MaximumAddress = MAX_ADDRESS;\r
+ }\r
}\r
+ return;\r
}\r
\r
- InsertTailList (Link2, &Entry->Link);\r
+ //\r
+ // Compute the address at the top of the current statistics\r
+ //\r
+ mMemoryTypeStatistics[Type].MaximumAddress =\r
+ mMemoryTypeStatistics[Type].BaseAddress +\r
+ LShiftU64 (gMemoryTypeInformation[Index].NumberOfPages, EFI_PAGE_SHIFT) - 1;\r
\r
- } else {\r
//\r
- // This item of mMapStack[mMapDepth] has already been dequeued from gMemoryMap list,\r
- // so here no need to move it to memory.\r
+ // If the current base address is the lowest address so far, then update the default\r
+ // maximum address\r
//\r
- InsertTailList (&mFreeMemoryMapEntryList, &Entry->Link);\r
+ if (mMemoryTypeStatistics[Type].BaseAddress < mDefaultMaximumAddress) {\r
+ mDefaultMaximumAddress = mMemoryTypeStatistics[Type].BaseAddress - 1;\r
+ }\r
}\r
}\r
\r
- mFreeMapStack -= 1;\r
-}\r
-\r
-\r
-/**\r
- Internal function. Removes a descriptor entry.\r
-\r
- @param Entry The entry to remove\r
-\r
-**/\r
-VOID\r
-RemoveMemoryMapEntry (\r
- IN OUT MEMORY_MAP *Entry\r
- )\r
-{\r
- RemoveEntryList (&Entry->Link);\r
- Entry->Link.ForwardLink = NULL;\r
-\r
- if (Entry->FromPages) {\r
+ //\r
+ // There was enough system memory for all the the memory types were allocated. So,\r
+ // those memory areas can be freed for future allocations, and all future memory\r
+ // allocations can occur within their respective bins\r
+ //\r
+ for (Index = 0; gMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {\r
//\r
- // Insert the free memory map descriptor to the end of mFreeMemoryMapEntryList\r
+ // Make sure the memory type in the gMemoryTypeInformation[] array is valid\r
//\r
- InsertTailList (&mFreeMemoryMapEntryList, &Entry->Link);\r
+ Type = (EFI_MEMORY_TYPE) (gMemoryTypeInformation[Index].Type);\r
+ if ((UINT32)Type > EfiMaxMemoryType) {\r
+ continue;\r
+ }\r
+ if (gMemoryTypeInformation[Index].NumberOfPages != 0) {\r
+ CoreFreePages (\r
+ mMemoryTypeStatistics[Type].BaseAddress,\r
+ gMemoryTypeInformation[Index].NumberOfPages\r
+ );\r
+ mMemoryTypeStatistics[Type].NumberOfPages = gMemoryTypeInformation[Index].NumberOfPages;\r
+ gMemoryTypeInformation[Index].NumberOfPages = 0;\r
+ }\r
}\r
-}\r
-\r
-\r
-/**\r
- Internal function. Deque a descriptor entry from the mFreeMemoryMapEntryList.\r
- If the list is emtry, then allocate a new page to refuel the list.\r
- Please Note this algorithm to allocate the memory map descriptor has a property\r
- that the memory allocated for memory entries always grows, and will never really be freed\r
- For example, if the current boot uses 2000 memory map entries at the maximum point, but\r
- ends up with only 50 at the time the OS is booted, then the memory associated with the 1950\r
- memory map entries is still allocated from EfiBootServicesMemory.\r
-\r
-\r
- @return The Memory map descriptor dequed from the mFreeMemoryMapEntryList\r
-\r
-**/\r
-MEMORY_MAP *\r
-AllocateMemoryMapEntry (\r
- VOID\r
- )\r
-{\r
- MEMORY_MAP* FreeDescriptorEntries;\r
- MEMORY_MAP* Entry;\r
- UINTN Index;\r
\r
- if (IsListEmpty (&mFreeMemoryMapEntryList)) {\r
- //\r
- // The list is empty, to allocate one page to refuel the list\r
- //\r
- FreeDescriptorEntries = CoreAllocatePoolPages (EfiBootServicesData, EFI_SIZE_TO_PAGES(DEFAULT_PAGE_ALLOCATION), DEFAULT_PAGE_ALLOCATION);\r
- if(FreeDescriptorEntries != NULL) {\r
- //\r
- // Enque the free memmory map entries into the list\r
- //\r
- for (Index = 0; Index< DEFAULT_PAGE_ALLOCATION / sizeof(MEMORY_MAP); Index++) {\r
- FreeDescriptorEntries[Index].Signature = MEMORY_MAP_SIGNATURE;\r
- InsertTailList (&mFreeMemoryMapEntryList, &FreeDescriptorEntries[Index].Link);\r
+ //\r
+ // If the number of pages reserved for a memory type is 0, then all allocations for that type\r
+ // should be in the default range.\r
+ //\r
+ for (Type = (EFI_MEMORY_TYPE) 0; Type < EfiMaxMemoryType; Type++) {\r
+ for (Index = 0; gMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {\r
+ if (Type == (EFI_MEMORY_TYPE)gMemoryTypeInformation[Index].Type) {\r
+ mMemoryTypeStatistics[Type].InformationIndex = Index;\r
}\r
- } else {\r
- return NULL;\r
+ }\r
+ mMemoryTypeStatistics[Type].CurrentNumberOfPages = 0;\r
+ if (mMemoryTypeStatistics[Type].MaximumAddress == MAX_ADDRESS) {\r
+ mMemoryTypeStatistics[Type].MaximumAddress = mDefaultMaximumAddress;\r
}\r
}\r
- //\r
- // dequeue the first descriptor from the list\r
- //\r
- Entry = CR (mFreeMemoryMapEntryList.ForwardLink, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r
- RemoveEntryList (&Entry->Link);\r
\r
- return Entry;\r
+ mMemoryTypeInformationInitialized = TRUE;\r
}\r
\r
\r
// if that's all we've got\r
//\r
RangeEnd = End;\r
+\r
+ ASSERT (Entry != NULL);\r
if (Entry->End < End) {\r
RangeEnd = Entry->End;\r
}\r
// Debug code - verify conversion is allowed\r
//\r
if (!(NewType == EfiConventionalMemory ? 1 : 0) ^ (Entry->Type == EfiConventionalMemory ? 1 : 0)) {\r
- DEBUG ((DEBUG_ERROR , "ConvertPages: Incompatible memory types\n"));\r
+ DEBUG ((DEBUG_ERROR | DEBUG_PAGE, "ConvertPages: Incompatible memory types\n"));\r
return EFI_NOT_FOUND;\r
}\r
\r
//\r
// Update counters for the number of pages allocated to each memory type\r
//\r
- if (Entry->Type >= 0 && Entry->Type < EfiMaxMemoryType) {\r
- if (Start >= mMemoryTypeStatistics[Entry->Type].BaseAddress &&\r
- Start <= mMemoryTypeStatistics[Entry->Type].MaximumAddress) {\r
+ if ((UINT32)Entry->Type < EfiMaxMemoryType) {\r
+ if ((Start >= mMemoryTypeStatistics[Entry->Type].BaseAddress && Start <= mMemoryTypeStatistics[Entry->Type].MaximumAddress) ||\r
+ (Start >= mDefaultBaseAddress && Start <= mDefaultMaximumAddress) ) {\r
if (NumberOfPages > mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages) {\r
mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages = 0;\r
} else {\r
}\r
}\r
\r
- if (NewType >= 0 && NewType < EfiMaxMemoryType) {\r
- if (Start >= mMemoryTypeStatistics[NewType].BaseAddress && Start <= mMemoryTypeStatistics[NewType].MaximumAddress) {\r
+ if ((UINT32)NewType < EfiMaxMemoryType) {\r
+ if ((Start >= mMemoryTypeStatistics[NewType].BaseAddress && Start <= mMemoryTypeStatistics[NewType].MaximumAddress) ||\r
+ (Start >= mDefaultBaseAddress && Start <= mDefaultMaximumAddress) ) {\r
mMemoryTypeStatistics[NewType].CurrentNumberOfPages += NumberOfPages;\r
- if (mMemoryTypeStatistics[NewType].CurrentNumberOfPages >\r
- gMemoryTypeInformation[mMemoryTypeStatistics[NewType].InformationIndex].NumberOfPages) {\r
+ if (mMemoryTypeStatistics[NewType].CurrentNumberOfPages > gMemoryTypeInformation[mMemoryTypeStatistics[NewType].InformationIndex].NumberOfPages) {\r
gMemoryTypeInformation[mMemoryTypeStatistics[NewType].InformationIndex].NumberOfPages = (UINT32)mMemoryTypeStatistics[NewType].CurrentNumberOfPages;\r
}\r
}\r
// Add our new range in\r
//\r
CoreAddRange (NewType, Start, RangeEnd, Attribute);\r
+ if (NewType == EfiConventionalMemory) {\r
+ //\r
+ // Avoid calling DEBUG_CLEAR_MEMORY() for an address of 0 because this\r
+ // macro will ASSERT() if address is 0. Instead, CoreAddRange() guarantees\r
+ // that the page starting at address 0 is always filled with zeros.\r
+ //\r
+ if (Start == 0) {\r
+ if (RangeEnd > EFI_PAGE_SIZE) {\r
+ DEBUG_CLEAR_MEMORY ((VOID *)(UINTN) EFI_PAGE_SIZE, (UINTN) (RangeEnd - EFI_PAGE_SIZE + 1));\r
+ }\r
+ } else {\r
+ DEBUG_CLEAR_MEMORY ((VOID *)(UINTN) Start, (UINTN) (RangeEnd - Start + 1));\r
+ }\r
+ }\r
\r
//\r
// Move any map descriptor stack to general pool\r
the requested address.\r
\r
@param MaxAddress The address that the range must be below\r
+ @param MinAddress The address that the range must be above\r
@param NumberOfPages Number of pages needed\r
@param NewType The type of memory the range is going to be\r
turned into\r
UINT64\r
CoreFindFreePagesI (\r
IN UINT64 MaxAddress,\r
+ IN UINT64 MinAddress,\r
IN UINT64 NumberOfPages,\r
IN EFI_MEMORY_TYPE NewType,\r
IN UINTN Alignment\r
//\r
// Set MaxAddress to a page boundary\r
//\r
- MaxAddress &= ~EFI_PAGE_MASK;\r
+ MaxAddress &= ~(UINT64)EFI_PAGE_MASK;\r
\r
//\r
// Set MaxAddress to end of the page\r
DescEnd = Entry->End;\r
\r
//\r
- // If desc is past max allowed address, skip it\r
+ // If desc is past max allowed address or below min allowed address, skip it\r
//\r
- if (DescStart >= MaxAddress) {\r
+ if ((DescStart >= MaxAddress) || (DescEnd < MinAddress)) {\r
continue;\r
}\r
\r
DescNumberOfBytes = DescEnd - DescStart + 1;\r
\r
if (DescNumberOfBytes >= NumberOfBytes) {\r
+ //\r
+ // If the start of the allocated range is below the min address allowed, skip it\r
+ //\r
+ if ((DescEnd - NumberOfBytes + 1) < MinAddress) {\r
+ continue;\r
+ }\r
\r
//\r
// If this is the best match so far remember it\r
IN UINTN Alignment\r
)\r
{\r
- UINT64 NewMaxAddress;\r
- UINT64 Start;\r
+ UINT64 Start;\r
\r
- NewMaxAddress = MaxAddress;\r
+ //\r
+ // Attempt to find free pages in the preferred bin based on the requested memory type\r
+ //\r
+ if ((UINT32)NewType < EfiMaxMemoryType && MaxAddress >= mMemoryTypeStatistics[NewType].MaximumAddress) {\r
+ Start = CoreFindFreePagesI (\r
+ mMemoryTypeStatistics[NewType].MaximumAddress, \r
+ mMemoryTypeStatistics[NewType].BaseAddress, \r
+ NoPages, \r
+ NewType, \r
+ Alignment\r
+ );\r
+ if (Start != 0) {\r
+ return Start;\r
+ }\r
+ }\r
\r
- if (NewType >= 0 && NewType < EfiMaxMemoryType && NewMaxAddress >= mMemoryTypeStatistics[NewType].MaximumAddress) {\r
- NewMaxAddress = mMemoryTypeStatistics[NewType].MaximumAddress;\r
- } else {\r
- if (NewMaxAddress > mDefaultMaximumAddress) {\r
- NewMaxAddress = mDefaultMaximumAddress;\r
+ //\r
+ // Attempt to find free pages in the default allocation bin\r
+ //\r
+ if (MaxAddress >= mDefaultMaximumAddress) {\r
+ Start = CoreFindFreePagesI (mDefaultMaximumAddress, 0, NoPages, NewType, Alignment);\r
+ if (Start != 0) {\r
+ if (Start < mDefaultBaseAddress) {\r
+ mDefaultBaseAddress = Start;\r
+ }\r
+ return Start;\r
}\r
}\r
\r
- Start = CoreFindFreePagesI (NewMaxAddress, NoPages, NewType, Alignment);\r
- if (Start == 0) {\r
- Start = CoreFindFreePagesI (MaxAddress, NoPages, NewType, Alignment);\r
- if (Start == 0) {\r
- //\r
- // Here means there may be no enough memory to use, so try to go through\r
- // all the memory descript to promote the untested memory directly\r
- //\r
- PromoteMemoryResource ();\r
+ //\r
+ // The allocation did not succeed in any of the prefered bins even after \r
+ // promoting resources. Attempt to find free pages anywhere is the requested \r
+ // address range. If this allocation fails, then there are not enough \r
+ // resources anywhere to satisfy the request.\r
+ //\r
+ Start = CoreFindFreePagesI (MaxAddress, 0, NoPages, NewType, Alignment);\r
+ if (Start != 0) {\r
+ return Start;\r
+ }\r
\r
- //\r
- // Allocate memory again after the memory resource re-arranged\r
- //\r
- Start = CoreFindFreePagesI (MaxAddress, NoPages, NewType, Alignment);\r
- }\r
+ //\r
+ // If allocations from the preferred bins fail, then attempt to promote memory resources.\r
+ //\r
+ if (!PromoteMemoryResource ()) {\r
+ return 0;\r
}\r
\r
- return Start;\r
+ //\r
+ // If any memory resources were promoted, then re-attempt the allocation\r
+ //\r
+ return FindFreePages (MaxAddress, NoPages, NewType, Alignment);\r
}\r
\r
\r
-\r
/**\r
Allocates pages from the memory map.\r
\r
UINT64 MaxAddress;\r
UINTN Alignment;\r
\r
- if (Type < AllocateAnyPages || Type >= (UINTN) MaxAllocateType) {\r
+ if ((UINT32)Type >= MaxAllocateType) {\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
+ if (Memory == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
Alignment = EFI_DEFAULT_PAGE_ALLOCATION_ALIGNMENT;\r
\r
if (MemoryType == EfiACPIReclaimMemory ||\r
//\r
// The max address is the max natively addressable address for the processor\r
//\r
- MaxAddress = EFI_MAX_ADDRESS;\r
+ MaxAddress = MAX_ADDRESS;\r
\r
if (Type == AllocateMaxAddress) {\r
MaxAddress = Start;\r
}\r
}\r
if (Link == &gMemoryMap) {\r
- CoreReleaseMemoryLock ();\r
- return EFI_NOT_FOUND;\r
+ Status = EFI_NOT_FOUND;\r
+ goto Done;\r
}\r
\r
Alignment = EFI_DEFAULT_PAGE_ALLOCATION_ALIGNMENT;\r
\r
+ ASSERT (Entry != NULL);\r
if (Entry->Type == EfiACPIReclaimMemory ||\r
Entry->Type == EfiACPIMemoryNVS ||\r
Entry->Type == EfiRuntimeServicesCode ||\r
}\r
\r
if ((Memory & (Alignment - 1)) != 0) {\r
- CoreReleaseMemoryLock ();\r
- return EFI_INVALID_PARAMETER;\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto Done;\r
}\r
\r
NumberOfPages += EFI_SIZE_TO_PAGES (Alignment) - 1;\r
\r
Status = CoreConvertPages (Memory, NumberOfPages, EfiConventionalMemory);\r
\r
- CoreReleaseMemoryLock ();\r
-\r
if (EFI_ERROR (Status)) {\r
- return Status;\r
+ goto Done;\r
}\r
\r
+Done:\r
+ CoreReleaseMemoryLock ();\r
+ return Status;\r
+}\r
+\r
+/**\r
+ This function checks to see if the last memory map descriptor in a memory map\r
+ can be merged with any of the other memory map descriptors in a memorymap.\r
+ Memory descriptors may be merged if they are adjacent and have the same type\r
+ and attributes.\r
+\r
+ @param MemoryMap A pointer to the start of the memory map.\r
+ @param MemoryMapDescriptor A pointer to the last descriptor in MemoryMap.\r
+ @param DescriptorSize The size, in bytes, of an individual\r
+ EFI_MEMORY_DESCRIPTOR.\r
+\r
+ @return A pointer to the next available descriptor in MemoryMap\r
+\r
+**/\r
+EFI_MEMORY_DESCRIPTOR *\r
+MergeMemoryMapDescriptor (\r
+ IN EFI_MEMORY_DESCRIPTOR *MemoryMap,\r
+ IN EFI_MEMORY_DESCRIPTOR *MemoryMapDescriptor,\r
+ IN UINTN DescriptorSize\r
+ )\r
+{\r
//\r
- // Destroy the contents\r
+ // Traverse the array of descriptors in MemoryMap\r
//\r
- if (Memory < EFI_MAX_ADDRESS) {\r
- DEBUG_CLEAR_MEMORY ((VOID *)(UINTN)Memory, NumberOfPages << EFI_PAGE_SHIFT);\r
+ for (; MemoryMap != MemoryMapDescriptor; MemoryMap = NEXT_MEMORY_DESCRIPTOR (MemoryMap, DescriptorSize)) {\r
+ //\r
+ // Check to see if the Type fields are identical.\r
+ //\r
+ if (MemoryMap->Type != MemoryMapDescriptor->Type) {\r
+ continue;\r
+ }\r
+\r
+ //\r
+ // Check to see if the Attribute fields are identical.\r
+ //\r
+ if (MemoryMap->Attribute != MemoryMapDescriptor->Attribute) {\r
+ continue;\r
+ }\r
+\r
+ //\r
+ // Check to see if MemoryMapDescriptor is immediately above MemoryMap\r
+ //\r
+ if (MemoryMap->PhysicalStart + EFI_PAGES_TO_SIZE ((UINTN)MemoryMap->NumberOfPages) == MemoryMapDescriptor->PhysicalStart) { \r
+ //\r
+ // Merge MemoryMapDescriptor into MemoryMap\r
+ //\r
+ MemoryMap->NumberOfPages += MemoryMapDescriptor->NumberOfPages;\r
+\r
+ //\r
+ // Return MemoryMapDescriptor as the next available slot int he MemoryMap array\r
+ //\r
+ return MemoryMapDescriptor;\r
+ }\r
+\r
+ //\r
+ // Check to see if MemoryMapDescriptor is immediately below MemoryMap\r
+ //\r
+ if (MemoryMap->PhysicalStart - EFI_PAGES_TO_SIZE ((UINTN)MemoryMapDescriptor->NumberOfPages) == MemoryMapDescriptor->PhysicalStart) {\r
+ //\r
+ // Merge MemoryMapDescriptor into MemoryMap\r
+ //\r
+ MemoryMap->PhysicalStart = MemoryMapDescriptor->PhysicalStart;\r
+ MemoryMap->VirtualStart = MemoryMapDescriptor->VirtualStart;\r
+ MemoryMap->NumberOfPages += MemoryMapDescriptor->NumberOfPages;\r
+\r
+ //\r
+ // Return MemoryMapDescriptor as the next available slot int he MemoryMap array\r
+ //\r
+ return MemoryMapDescriptor;\r
+ }\r
}\r
\r
- return Status;\r
+ //\r
+ // MemoryMapDescrtiptor could not be merged with any descriptors in MemoryMap.\r
+ //\r
+ // Return the slot immediately after MemoryMapDescriptor as the next available \r
+ // slot in the MemoryMap array\r
+ //\r
+ return NEXT_MEMORY_DESCRIPTOR (MemoryMapDescriptor, DescriptorSize);\r
}\r
\r
-\r
/**\r
This function returns a copy of the current memory map. The map is an array of\r
memory descriptors, each of which describes a contiguous block of memory.\r
MEMORY_MAP *Entry;\r
EFI_GCD_MAP_ENTRY *GcdMapEntry;\r
EFI_MEMORY_TYPE Type;\r
+ EFI_MEMORY_DESCRIPTOR *MemoryMapStart;\r
\r
//\r
// Make sure the parameters are valid\r
// Build the map\r
//\r
ZeroMem (MemoryMap, BufferSize);\r
+ MemoryMapStart = MemoryMap;\r
for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {\r
Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r
ASSERT (Entry->VirtualStart == 0);\r
}\r
}\r
MemoryMap->Attribute = Entry->Attribute;\r
- if (mMemoryTypeStatistics[MemoryMap->Type].Runtime) {\r
- MemoryMap->Attribute |= EFI_MEMORY_RUNTIME;\r
+ if (MemoryMap->Type < EfiMaxMemoryType) {\r
+ if (mMemoryTypeStatistics[MemoryMap->Type].Runtime) {\r
+ MemoryMap->Attribute |= EFI_MEMORY_RUNTIME;\r
+ }\r
}\r
\r
- MemoryMap = NextMemoryDescriptor (MemoryMap, Size);\r
+ //\r
+ // Check to see if the new Memory Map Descriptor can be merged with an \r
+ // existing descriptor if they are adjacent and have the same attributes\r
+ //\r
+ MemoryMap = MergeMemoryMapDescriptor (MemoryMapStart, MemoryMap, Size);\r
}\r
\r
for (Link = mGcdMemorySpaceMap.ForwardLink; Link != &mGcdMemorySpaceMap; Link = Link->ForwardLink) {\r
if ((GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeReserved) ||\r
(GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeMemoryMappedIo)) {\r
if ((GcdMapEntry->Attributes & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) {\r
-\r
+ // \r
+ // Create EFI_MEMORY_DESCRIPTOR for every Reserved and MMIO GCD entries\r
+ // that are marked for runtime use\r
+ //\r
MemoryMap->PhysicalStart = GcdMapEntry->BaseAddress;\r
MemoryMap->VirtualStart = 0;\r
MemoryMap->NumberOfPages = RShiftU64 ((GcdMapEntry->EndAddress - GcdMapEntry->BaseAddress + 1), EFI_PAGE_SHIFT);\r
}\r
}\r
\r
- MemoryMap = NextMemoryDescriptor (MemoryMap, Size);\r
+ //\r
+ // Check to see if the new Memory Map Descriptor can be merged with an \r
+ // existing descriptor if they are adjacent and have the same attributes\r
+ //\r
+ MemoryMap = MergeMemoryMapDescriptor (MemoryMapStart, MemoryMap, Size);\r
}\r
}\r
}\r
\r
+ //\r
+ // Compute the size of the buffer actually used after all memory map descriptor merge operations\r
+ //\r
+ BufferSize = ((UINT8 *)MemoryMap - (UINT8 *)MemoryMapStart);\r
+\r
Status = EFI_SUCCESS;\r
\r
Done:\r
-\r
- CoreReleaseMemoryLock ();\r
-\r
- CoreReleaseGcdMemoryLock ();\r
-\r
//\r
// Update the map key finally\r
//\r
*MapKey = mMemoryMapKey;\r
}\r
\r
+ CoreReleaseMemoryLock ();\r
+\r
+ CoreReleaseGcdMemoryLock ();\r
+\r
*MemoryMapSize = BufferSize;\r
\r
return Status;\r
//\r
// Find the pages to convert\r
//\r
- Start = FindFreePages (EFI_MAX_ADDRESS, NumberOfPages, PoolType, Alignment);\r
+ Start = FindFreePages (MAX_ADDRESS, NumberOfPages, PoolType, Alignment);\r
\r
//\r
// Convert it to boot services data\r
//\r
if (Start == 0) {\r
- DEBUG ((DEBUG_ERROR | DEBUG_PAGE, "AllocatePoolPages: failed to allocate %d pages\n", NumberOfPages));\r
+ DEBUG ((DEBUG_ERROR | DEBUG_PAGE, "AllocatePoolPages: failed to allocate %d pages\n", (UINT32)NumberOfPages));\r
} else {\r
CoreConvertPages (Start, NumberOfPages, PoolType);\r
}\r
\r
for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {\r
Entry = CR(Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r
- if (Entry->Attribute & EFI_MEMORY_RUNTIME) {\r
+ if ((Entry->Attribute & EFI_MEMORY_RUNTIME) != 0) {\r
if (Entry->Type == EfiACPIReclaimMemory || Entry->Type == EfiACPIMemoryNVS) {\r
- DEBUG((DEBUG_ERROR, "ExitBootServices: ACPI memory entry has RUNTIME attribute set.\n"));\r
- CoreReleaseMemoryLock ();\r
- return EFI_INVALID_PARAMETER;\r
+ DEBUG((DEBUG_ERROR | DEBUG_PAGE, "ExitBootServices: ACPI memory entry has RUNTIME attribute set.\n"));\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto Done;\r
}\r
- if (Entry->Start & (EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT - 1)) {\r
- DEBUG((DEBUG_ERROR, "ExitBootServices: A RUNTIME memory entry is not on a proper alignment.\n"));\r
- CoreReleaseMemoryLock ();\r
- return EFI_INVALID_PARAMETER;\r
+ if ((Entry->Start & (EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT - 1)) != 0) {\r
+ DEBUG((DEBUG_ERROR | DEBUG_PAGE, "ExitBootServices: A RUNTIME memory entry is not on a proper alignment.\n"));\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto Done;\r
}\r
- if ((Entry->End + 1) & (EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT - 1)) {\r
- DEBUG((DEBUG_ERROR, "ExitBootServices: A RUNTIME memory entry is not on a proper alignment.\n"));\r
- CoreReleaseMemoryLock ();\r
- return EFI_INVALID_PARAMETER;\r
+ if (((Entry->End + 1) & (EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT - 1)) != 0) {\r
+ DEBUG((DEBUG_ERROR | DEBUG_PAGE, "ExitBootServices: A RUNTIME memory entry is not on a proper alignment.\n"));\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto Done;\r
}\r
}\r
}\r
Status = EFI_INVALID_PARAMETER;\r
}\r
\r
+Done:\r
CoreReleaseMemoryLock ();\r
\r
return Status;\r
projects / mirror_edk2.git / blobdiff