/** @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
-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
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "DxeMain.h"\r
-\r
-#define EFI_DEFAULT_PAGE_ALLOCATION_ALIGNMENT (EFI_PAGE_SIZE)\r
+#include "Imem.h"\r
+#include "HeapGuard.h"\r
\r
//\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
- EFI_PHYSICAL_ADDRESS MaximumAddress;\r
- UINT64 CurrentNumberOfPages;\r
- UINT64 NumberOfPages;\r
- UINTN InformationIndex;\r
- BOOLEAN Special;\r
- BOOLEAN Runtime;\r
-} EFI_MEMORY_TYPE_STAISTICS;\r
+ EFI_PHYSICAL_ADDRESS BaseAddress;\r
+ EFI_PHYSICAL_ADDRESS MaximumAddress;\r
+ UINT64 CurrentNumberOfPages;\r
+ UINT64 NumberOfPages;\r
+ UINTN InformationIndex;\r
+ BOOLEAN Special;\r
+ BOOLEAN Runtime;\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
-UINTN mMapDepth = 0;\r
-MEMORY_MAP mMapStack[MAX_MAP_DEPTH];\r
-UINTN mFreeMapStack = 0;\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
+UINTN mMemoryMapKey = 0;\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
+LIST_ENTRY mFreeMemoryMapEntryList = INITIALIZE_LIST_HEAD_VARIABLE (mFreeMemoryMapEntryList);\r
+BOOLEAN mMemoryTypeInformationInitialized = FALSE;\r
+\r
+EFI_MEMORY_TYPE_STATISTICS mMemoryTypeStatistics[EfiMaxMemoryType + 1] = {\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, FALSE }, // EfiReservedMemoryType\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiLoaderCode\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiLoaderData\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiBootServicesCode\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiBootServicesData\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, TRUE }, // EfiRuntimeServicesCode\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, TRUE }, // EfiRuntimeServicesData\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiConventionalMemory\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiUnusableMemory\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, FALSE }, // EfiACPIReclaimMemory\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, FALSE }, // EfiACPIMemoryNVS\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiMemoryMappedIO\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiMemoryMappedIOPortSpace\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, TRUE, TRUE }, // EfiPalCode\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE }, // EfiPersistentMemory\r
+ { 0, MAX_ALLOC_ADDRESS, 0, 0, EfiMaxMemoryType, FALSE, FALSE } // EfiMaxMemoryType\r
};\r
\r
-EFI_PHYSICAL_ADDRESS mDefaultMaximumAddress = EFI_MAX_ADDRESS;\r
+EFI_PHYSICAL_ADDRESS mDefaultMaximumAddress = MAX_ALLOC_ADDRESS;\r
+EFI_PHYSICAL_ADDRESS mDefaultBaseAddress = MAX_ALLOC_ADDRESS;\r
\r
-EFI_MEMORY_TYPE_INFORMATION gMemoryTypeInformation[EfiMaxMemoryType + 1] = {\r
+EFI_MEMORY_TYPE_INFORMATION gMemoryTypeInformation[EfiMaxMemoryType + 1] = {\r
{ EfiReservedMemoryType, 0 },\r
{ EfiLoaderCode, 0 },\r
{ EfiLoaderData, 0 },\r
{ EfiMemoryMappedIO, 0 },\r
{ EfiMemoryMappedIOPortSpace, 0 },\r
{ EfiPalCode, 0 },\r
+ { EfiPersistentMemory, 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
CoreAcquireLock (&gMemoryLock);\r
}\r
\r
-\r
-\r
/**\r
Exit critical section by releasing lock on gMemoryLock.\r
\r
CoreReleaseLock (&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_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
**/\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
+ IN EFI_MEMORY_TYPE Type,\r
+ IN EFI_PHYSICAL_ADDRESS Start,\r
+ IN EFI_PHYSICAL_ADDRESS End,\r
+ IN UINT64 Attribute\r
)\r
{\r
- LIST_ENTRY *Link;\r
- MEMORY_MAP *Entry;\r
+ LIST_ENTRY *Link;\r
+ MEMORY_MAP *Entry;\r
\r
ASSERT ((Start & EFI_PAGE_MASK) == 0);\r
- ASSERT (End > Start) ;\r
+ ASSERT (End > Start);\r
\r
ASSERT_LOCKED (&gMemoryLock);\r
\r
DEBUG ((DEBUG_PAGE, "AddRange: %lx-%lx to %d\n", Start, End, Type));\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
+ if ((PcdGet8 (PcdNullPointerDetectionPropertyMask) & BIT0) == 0) {\r
+ SetMem ((VOID *)(UINTN)Start, EFI_PAGE_SIZE, 0);\r
+ }\r
+ }\r
+\r
//\r
// Memory map being altered so updated key\r
//\r
// If we are in EFI 1.10 compatability mode no event groups will be\r
// found and nothing will happen we we call this function. These events\r
// will get signaled but since a lock is held around the call to this\r
- // function the notificaiton events will only be called after this funciton\r
+ // function the notificaiton events will only be called after this function\r
// returns and the lock is released.\r
//\r
CoreNotifySignalList (&gEfiEventMemoryMapChangeGuid);\r
}\r
\r
if (Entry->End + 1 == Start) {\r
-\r
Start = Entry->Start;\r
RemoveMemoryMapEntry (Entry);\r
-\r
} else if (Entry->Start == End + 1) {\r
-\r
End = Entry->End;\r
RemoveMemoryMapEntry (Entry);\r
}\r
// Add descriptor\r
//\r
\r
- mMapStack[mMapDepth].Signature = MEMORY_MAP_SIGNATURE;\r
- mMapStack[mMapDepth].FromPages = FALSE;\r
- mMapStack[mMapDepth].Type = Type;\r
- mMapStack[mMapDepth].Start = Start;\r
- mMapStack[mMapDepth].End = End;\r
- mMapStack[mMapDepth].VirtualStart = 0;\r
- mMapStack[mMapDepth].Attribute = Attribute;\r
+ mMapStack[mMapDepth].Signature = MEMORY_MAP_SIGNATURE;\r
+ mMapStack[mMapDepth].FromPages = FALSE;\r
+ mMapStack[mMapDepth].Type = Type;\r
+ mMapStack[mMapDepth].Start = Start;\r
+ mMapStack[mMapDepth].End = End;\r
+ mMapStack[mMapDepth].VirtualStart = 0;\r
+ mMapStack[mMapDepth].Attribute = Attribute;\r
InsertTailList (&gMemoryMap, &mMapStack[mMapDepth].Link);\r
\r
mMapDepth += 1;\r
ASSERT (mMapDepth < MAX_MAP_DEPTH);\r
\r
- return ;\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 (\r
+ EfiBootServicesData,\r
+ EFI_SIZE_TO_PAGES (DEFAULT_PAGE_ALLOCATION_GRANULARITY),\r
+ DEFAULT_PAGE_ALLOCATION_GRANULARITY,\r
+ FALSE\r
+ );\r
+ if (FreeDescriptorEntries != NULL) {\r
+ //\r
+ // Enque the free memmory map entries into the list\r
+ //\r
+ for (Index = 0; Index < DEFAULT_PAGE_ALLOCATION_GRANULARITY / 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
+ //\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
Internal function. Moves any memory descriptors that are on the\r
VOID\r
)\r
{\r
- MEMORY_MAP *Entry;\r
- MEMORY_MAP *Entry2;\r
- LIST_ENTRY *Link2;\r
+ MEMORY_MAP *Entry;\r
+ MEMORY_MAP *Entry2;\r
+ LIST_ENTRY *Link2;\r
\r
ASSERT_LOCKED (&gMemoryLock);\r
\r
// If already freeing the map stack, then return\r
//\r
if (mFreeMapStack != 0) {\r
- return ;\r
+ return;\r
}\r
\r
//\r
mMapDepth -= 1;\r
\r
if (mMapStack[mMapDepth].Link.ForwardLink != NULL) {\r
-\r
//\r
// Move this entry to general memory\r
//\r
RemoveEntryList (&mMapStack[mMapDepth].Link);\r
mMapStack[mMapDepth].Link.ForwardLink = NULL;\r
\r
- CopyMem (Entry , &mMapStack[mMapDepth], sizeof (MEMORY_MAP));\r
+ CopyMem (Entry, &mMapStack[mMapDepth], sizeof (MEMORY_MAP));\r
Entry->FromPages = TRUE;\r
\r
//\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
+ 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
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
+ EFI_PHYSICAL_ADDRESS StartAddress;\r
+ EFI_PHYSICAL_ADDRESS EndAddress;\r
+ EFI_GCD_MEMORY_SPACE_DESCRIPTOR Descriptor;\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
+ Entry = CR (Link, EFI_GCD_MAP_ENTRY, Link, EFI_GCD_MAP_SIGNATURE);\r
+\r
+ if ((Entry->GcdMemoryType == EfiGcdMemoryTypeReserved) &&\r
+ (Entry->EndAddress < MAX_ALLOC_ADDRESS) &&\r
+ ((Entry->Capabilities & (EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED | EFI_MEMORY_TESTED)) ==\r
+ (EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED)))\r
+ {\r
+ //\r
+ // Update the GCD map\r
+ //\r
+ if ((Entry->Capabilities & EFI_MEMORY_MORE_RELIABLE) == EFI_MEMORY_MORE_RELIABLE) {\r
+ Entry->GcdMemoryType = EfiGcdMemoryTypeMoreReliable;\r
+ } else {\r
+ Entry->GcdMemoryType = EfiGcdMemoryTypeSystemMemory;\r
+ }\r
+\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
+ if (!Promoted) {\r
+ //\r
+ // If freed-memory guard is enabled, we could promote pages from\r
+ // guarded free pages.\r
+ //\r
+ Promoted = PromoteGuardedFreePages (&StartAddress, &EndAddress);\r
+ if (Promoted) {\r
+ CoreGetMemorySpaceDescriptor (StartAddress, &Descriptor);\r
+ CoreAddRange (\r
+ EfiConventionalMemory,\r
+ StartAddress,\r
+ EndAddress,\r
+ Descriptor.Capabilities & ~(EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED |\r
+ EFI_MEMORY_TESTED | EFI_MEMORY_RUNTIME)\r
+ );\r
+ }\r
+ }\r
+\r
+ return Promoted;\r
+}\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
+ //\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
+\r
+ gLoadFixedAddressCodeMemoryReady = TRUE;\r
+ }\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
-/**\r
- Internal function. Removes a descriptor entry.\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
- @param Entry The entry to remove\r
+ @return None. The range is added to the memory map\r
\r
**/\r
VOID\r
-RemoveMemoryMapEntry (\r
- IN OUT MEMORY_MAP *Entry\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
- RemoveEntryList (&Entry->Link);\r
- Entry->Link.ForwardLink = NULL;\r
+ EFI_PHYSICAL_ADDRESS End;\r
+ EFI_STATUS Status;\r
+ UINTN Index;\r
+ UINTN FreeIndex;\r
\r
- if (Entry->FromPages) {\r
- //\r
- // Insert the free memory map descriptor to the end of mFreeMemoryMapEntryList\r
- //\r
- InsertTailList (&mFreeMemoryMapEntryList, &Entry->Link);\r
+ if ((Start & EFI_PAGE_MASK) != 0) {\r
+ return;\r
}\r
-}\r
\r
+ if ((Type >= EfiMaxMemoryType) && (Type < MEMORY_TYPE_OEM_RESERVED_MIN)) {\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
+ CoreAcquireMemoryLock ();\r
+ End = Start + LShiftU64 (NumberOfPages, EFI_PAGE_SHIFT) - 1;\r
+ CoreAddRange (Type, Start, End, Attribute);\r
+ CoreFreeMemoryMapStack ();\r
+ CoreReleaseMemoryLock ();\r
\r
+ ApplyMemoryProtectionPolicy (\r
+ EfiMaxMemoryType,\r
+ Type,\r
+ Start,\r
+ LShiftU64 (NumberOfPages, EFI_PAGE_SHIFT)\r
+ );\r
\r
- @return The Memory map descriptor dequed from the mFreeMemoryMapEntryList\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
-MEMORY_MAP *\r
-AllocateMemoryMapEntry (\r
- VOID\r
- )\r
-{\r
- MEMORY_MAP* FreeDescriptorEntries;\r
- MEMORY_MAP* Entry;\r
- UINTN Index;\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
- if (IsListEmpty (&mFreeMemoryMapEntryList)) {\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
- // The list is empty, to allocate one page to refuel the list\r
+ // Make sure the memory type in the gMemoryTypeInformation[] array is valid\r
//\r
- FreeDescriptorEntries = CoreAllocatePoolPages (EfiBootServicesData, EFI_SIZE_TO_PAGES(DEFAULT_PAGE_ALLOCATION), DEFAULT_PAGE_ALLOCATION);\r
- if(FreeDescriptorEntries != NULL) {\r
+ Type = (EFI_MEMORY_TYPE)(gMemoryTypeInformation[Index].Type);\r
+ if ((UINT32)Type > EfiMaxMemoryType) {\r
+ continue;\r
+ }\r
+\r
+ if (gMemoryTypeInformation[Index].NumberOfPages != 0) {\r
//\r
- // Enque the free memmory map entries into the list\r
+ // Allocate pages for the current memory type from the top of available memory\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
+ 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_ALLOC_ADDRESS;\r
+ }\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
- } else {\r
- return NULL;\r
}\r
}\r
+\r
//\r
- // dequeue the first descriptor from the list\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
- Entry = CR (mFreeMemoryMapEntryList.ForwardLink, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r
- RemoveEntryList (&Entry->Link);\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
\r
- return Entry;\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
+\r
+ mMemoryTypeStatistics[Type].CurrentNumberOfPages = 0;\r
+ if (mMemoryTypeStatistics[Type].MaximumAddress == MAX_ALLOC_ADDRESS) {\r
+ mMemoryTypeStatistics[Type].MaximumAddress = mDefaultMaximumAddress;\r
+ }\r
+ }\r
+\r
+ mMemoryTypeInformationInitialized = TRUE;\r
+}\r
\r
/**\r
- Internal function. Converts a memory range to the specified type.\r
- The range must exist in the memory map.\r
+ Internal function. Converts a memory range to the specified type or attributes.\r
+ The range must exist in the memory map. Either ChangingType or\r
+ ChangingAttributes must be set, but not both.\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 ChangingType Boolean indicating that type value should be changed\r
@param NewType The new type for the memory range\r
+ @param ChangingAttributes Boolean indicating that attributes value should be changed\r
+ @param NewAttributes The new attributes 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
\r
**/\r
EFI_STATUS\r
-CoreConvertPages (\r
+CoreConvertPagesEx (\r
IN UINT64 Start,\r
IN UINT64 NumberOfPages,\r
- IN EFI_MEMORY_TYPE NewType\r
+ IN BOOLEAN ChangingType,\r
+ IN EFI_MEMORY_TYPE NewType,\r
+ IN BOOLEAN ChangingAttributes,\r
+ IN UINT64 NewAttributes\r
)\r
{\r
-\r
- UINT64 NumberOfBytes;\r
- UINT64 End;\r
- UINT64 RangeEnd;\r
- UINT64 Attribute;\r
- LIST_ENTRY *Link;\r
- MEMORY_MAP *Entry;\r
-\r
- Entry = NULL;\r
+ UINT64 NumberOfBytes;\r
+ UINT64 End;\r
+ UINT64 RangeEnd;\r
+ UINT64 Attribute;\r
+ EFI_MEMORY_TYPE MemType;\r
+ LIST_ENTRY *Link;\r
+ MEMORY_MAP *Entry;\r
+\r
+ Entry = NULL;\r
NumberOfBytes = LShiftU64 (NumberOfPages, EFI_PAGE_SHIFT);\r
- End = Start + NumberOfBytes - 1;\r
+ End = Start + NumberOfBytes - 1;\r
\r
ASSERT (NumberOfPages);\r
ASSERT ((Start & EFI_PAGE_MASK) == 0);\r
- ASSERT (End > Start) ;\r
+ ASSERT (End > Start);\r
ASSERT_LOCKED (&gMemoryLock);\r
+ ASSERT ((ChangingType == FALSE) || (ChangingAttributes == FALSE));\r
\r
- if (NumberOfPages == 0 || ((Start & EFI_PAGE_MASK) != 0) || (Start > (Start + NumberOfBytes))) {\r
+ if ((NumberOfPages == 0) || ((Start & EFI_PAGE_MASK) != 0) || (Start >= End)) {\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
//\r
\r
while (Start < End) {\r
-\r
//\r
// Find the entry that the covers the range\r
//\r
for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {\r
Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r
\r
- if (Entry->Start <= Start && Entry->End > Start) {\r
+ if ((Entry->Start <= Start) && (Entry->End > Start)) {\r
break;\r
}\r
}\r
return EFI_NOT_FOUND;\r
}\r
\r
+ //\r
+ // If we are converting the type of the range from EfiConventionalMemory to\r
+ // another type, we have to ensure that the entire range is covered by a\r
+ // single entry.\r
+ //\r
+ if (ChangingType && (NewType != EfiConventionalMemory)) {\r
+ if (Entry->End < End) {\r
+ DEBUG ((DEBUG_ERROR | DEBUG_PAGE, "ConvertPages: range %lx - %lx covers multiple entries\n", Start, End));\r
+ return EFI_NOT_FOUND;\r
+ }\r
+ }\r
+\r
//\r
// Convert range to the end, or to the end of the descriptor\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
\r
- DEBUG ((DEBUG_PAGE, "ConvertRange: %lx-%lx to %d\n", Start, RangeEnd, NewType));\r
+ if (ChangingType) {\r
+ DEBUG ((DEBUG_PAGE, "ConvertRange: %lx-%lx to type %d\n", Start, RangeEnd, NewType));\r
+ }\r
\r
- //\r
- // Debug code - verify conversion is allowed\r
- //\r
- if (!(NewType == EfiConventionalMemory ? 1 : 0) ^ (Entry->Type == EfiConventionalMemory ? 1 : 0)) {\r
- DEBUG ((DEBUG_ERROR | DEBUG_PAGE, "ConvertPages: Incompatible memory types\n"));\r
- return EFI_NOT_FOUND;\r
+ if (ChangingAttributes) {\r
+ DEBUG ((DEBUG_PAGE, "ConvertRange: %lx-%lx to attr %lx\n", Start, RangeEnd, NewAttributes));\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 (NumberOfPages > mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages) {\r
- mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages = 0;\r
+ if (ChangingType) {\r
+ //\r
+ // Debug code - verify conversion is allowed\r
+ //\r
+ if (!((NewType == EfiConventionalMemory) ? 1 : 0) ^ ((Entry->Type == EfiConventionalMemory) ? 1 : 0)) {\r
+ DEBUG ((DEBUG_ERROR | DEBUG_PAGE, "ConvertPages: Incompatible memory types, "));\r
+ if (Entry->Type == EfiConventionalMemory) {\r
+ DEBUG ((DEBUG_ERROR | DEBUG_PAGE, "the pages to free have been freed\n"));\r
} else {\r
- mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages -= NumberOfPages;\r
+ DEBUG ((DEBUG_ERROR | DEBUG_PAGE, "the pages to allocate have been allocated\n"));\r
+ }\r
+\r
+ return EFI_NOT_FOUND;\r
+ }\r
+\r
+ //\r
+ // Update counters for the number of pages allocated to each memory type\r
+ //\r
+ if ((UINT32)Entry->Type < EfiMaxMemoryType) {\r
+ if (((Start >= mMemoryTypeStatistics[Entry->Type].BaseAddress) && (Start <= mMemoryTypeStatistics[Entry->Type].MaximumAddress)) ||\r
+ ((Start >= mDefaultBaseAddress) && (Start <= mDefaultMaximumAddress)))\r
+ {\r
+ if (NumberOfPages > mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages) {\r
+ mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages = 0;\r
+ } else {\r
+ mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages -= NumberOfPages;\r
+ }\r
}\r
}\r
- }\r
\r
- if (NewType >= 0 && NewType < EfiMaxMemoryType) {\r
- if (Start >= mMemoryTypeStatistics[NewType].BaseAddress && Start <= mMemoryTypeStatistics[NewType].MaximumAddress) {\r
- mMemoryTypeStatistics[NewType].CurrentNumberOfPages += NumberOfPages;\r
- if (mMemoryTypeStatistics[NewType].CurrentNumberOfPages >\r
- gMemoryTypeInformation[mMemoryTypeStatistics[NewType].InformationIndex].NumberOfPages) {\r
- gMemoryTypeInformation[mMemoryTypeStatistics[NewType].InformationIndex].NumberOfPages = (UINT32)mMemoryTypeStatistics[NewType].CurrentNumberOfPages;\r
+ if ((UINT32)NewType < EfiMaxMemoryType) {\r
+ if (((Start >= mMemoryTypeStatistics[NewType].BaseAddress) && (Start <= mMemoryTypeStatistics[NewType].MaximumAddress)) ||\r
+ ((Start >= mDefaultBaseAddress) && (Start <= mDefaultMaximumAddress)))\r
+ {\r
+ mMemoryTypeStatistics[NewType].CurrentNumberOfPages += NumberOfPages;\r
+ if (mMemoryTypeStatistics[NewType].CurrentNumberOfPages > gMemoryTypeInformation[mMemoryTypeStatistics[NewType].InformationIndex].NumberOfPages) {\r
+ gMemoryTypeInformation[mMemoryTypeStatistics[NewType].InformationIndex].NumberOfPages = (UINT32)mMemoryTypeStatistics[NewType].CurrentNumberOfPages;\r
+ }\r
}\r
}\r
}\r
// Pull range out of descriptor\r
//\r
if (Entry->Start == Start) {\r
-\r
//\r
// Clip start\r
//\r
Entry->Start = RangeEnd + 1;\r
-\r
} else if (Entry->End == RangeEnd) {\r
-\r
//\r
// Clip end\r
//\r
Entry->End = Start - 1;\r
-\r
} else {\r
-\r
//\r
// Pull it out of the center, clip current\r
//\r
// Add a new one\r
//\r
mMapStack[mMapDepth].Signature = MEMORY_MAP_SIGNATURE;\r
- mMapStack[mMapDepth].FromPages = FALSE;\r
+ mMapStack[mMapDepth].FromPages = FALSE;\r
mMapStack[mMapDepth].Type = Entry->Type;\r
mMapStack[mMapDepth].Start = RangeEnd+1;\r
mMapStack[mMapDepth].End = Entry->End;\r
\r
//\r
// The new range inherits the same Attribute as the Entry\r
- //it is being cut out of\r
+ // it is being cut out of unless attributes are being changed\r
//\r
- Attribute = Entry->Attribute;\r
+ if (ChangingType) {\r
+ Attribute = Entry->Attribute;\r
+ MemType = NewType;\r
+ } else {\r
+ Attribute = NewAttributes;\r
+ MemType = Entry->Type;\r
+ }\r
\r
//\r
// If the descriptor is empty, then remove it from the map\r
}\r
\r
//\r
- // Add our new range in\r
+ // Add our new range in. Don't do this for freed pages if freed-memory\r
+ // guard is enabled.\r
//\r
- CoreAddRange (NewType, Start, RangeEnd, Attribute);\r
+ if (!IsHeapGuardEnabled (GUARD_HEAP_TYPE_FREED) ||\r
+ !ChangingType ||\r
+ (MemType != EfiConventionalMemory))\r
+ {\r
+ CoreAddRange (MemType, Start, RangeEnd, Attribute);\r
+ }\r
+\r
+ if (ChangingType && (MemType == 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
return EFI_SUCCESS;\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
+ return CoreConvertPagesEx (Start, NumberOfPages, TRUE, NewType, FALSE, 0);\r
+}\r
+\r
+/**\r
+ Internal function. Converts a memory range to use new attributes.\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 NewAttributes The new attributes value for the range.\r
+\r
+**/\r
+VOID\r
+CoreUpdateMemoryAttributes (\r
+ IN EFI_PHYSICAL_ADDRESS Start,\r
+ IN UINT64 NumberOfPages,\r
+ IN UINT64 NewAttributes\r
+ )\r
+{\r
+ CoreAcquireMemoryLock ();\r
+\r
+ //\r
+ // Update the attributes to the new value\r
+ //\r
+ CoreConvertPagesEx (Start, NumberOfPages, FALSE, (EFI_MEMORY_TYPE)0, TRUE, NewAttributes);\r
\r
+ CoreReleaseMemoryLock ();\r
+}\r
\r
/**\r
Internal function. Finds a consecutive free page range below\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
@param Alignment Bits to align with\r
+ @param NeedGuard Flag to indicate Guard page is needed or not\r
\r
@return The base address of the range, or 0 if the range was not found\r
\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
+ IN UINTN Alignment,\r
+ IN BOOLEAN NeedGuard\r
)\r
{\r
- UINT64 NumberOfBytes;\r
- UINT64 Target;\r
- UINT64 DescStart;\r
- UINT64 DescEnd;\r
- UINT64 DescNumberOfBytes;\r
- LIST_ENTRY *Link;\r
- MEMORY_MAP *Entry;\r
-\r
- if ((MaxAddress < EFI_PAGE_MASK) ||(NumberOfPages == 0)) {\r
+ UINT64 NumberOfBytes;\r
+ UINT64 Target;\r
+ UINT64 DescStart;\r
+ UINT64 DescEnd;\r
+ UINT64 DescNumberOfBytes;\r
+ LIST_ENTRY *Link;\r
+ MEMORY_MAP *Entry;\r
+\r
+ if ((MaxAddress < EFI_PAGE_MASK) || (NumberOfPages == 0)) {\r
return 0;\r
}\r
\r
if ((MaxAddress & EFI_PAGE_MASK) != EFI_PAGE_MASK) {\r
-\r
//\r
// If MaxAddress is not aligned to the end of a page\r
//\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
}\r
\r
NumberOfBytes = LShiftU64 (NumberOfPages, EFI_PAGE_SHIFT);\r
- Target = 0;\r
+ Target = 0;\r
\r
for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {\r
Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r
}\r
\r
DescStart = Entry->Start;\r
- DescEnd = Entry->End;\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
DescEnd = MaxAddress;\r
}\r
\r
- DescEnd = ((DescEnd + 1) & (~(Alignment - 1))) - 1;\r
-\r
+ DescEnd = ((DescEnd + 1) & (~(Alignment - 1))) - 1;\r
+\r
+ // Skip if DescEnd is less than DescStart after alignment clipping\r
+ if (DescEnd < DescStart) {\r
+ continue;\r
+ }\r
+\r
//\r
// Compute the number of bytes we can used from this\r
// descriptor, and see it's enough to satisfy the request\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
//\r
if (DescEnd > Target) {\r
+ if (NeedGuard) {\r
+ DescEnd = AdjustMemoryS (\r
+ DescEnd + 1 - DescNumberOfBytes,\r
+ DescNumberOfBytes,\r
+ NumberOfBytes\r
+ );\r
+ if (DescEnd == 0) {\r
+ continue;\r
+ }\r
+ }\r
+\r
Target = DescEnd;\r
}\r
}\r
return Target;\r
}\r
\r
-\r
/**\r
Internal function. Finds a consecutive free page range below\r
the requested address\r
@param NewType The type of memory the range is going to be\r
turned into\r
@param Alignment Bits to align with\r
+ @param NeedGuard Flag to indicate Guard page is needed or not\r
\r
@return The base address of the range, or 0 if the range was not found.\r
\r
**/\r
UINT64\r
FindFreePages (\r
- IN UINT64 MaxAddress,\r
- IN UINT64 NoPages,\r
- IN EFI_MEMORY_TYPE NewType,\r
- IN UINTN Alignment\r
- )\r
+ IN UINT64 MaxAddress,\r
+ IN UINT64 NoPages,\r
+ IN EFI_MEMORY_TYPE NewType,\r
+ IN UINTN Alignment,\r
+ IN BOOLEAN NeedGuard\r
+ )\r
{\r
- UINT64 NewMaxAddress;\r
UINT64 Start;\r
\r
- NewMaxAddress = MaxAddress;\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 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
+ NeedGuard\r
+ );\r
+ if (Start != 0) {\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
+ // Attempt to find free pages in the default allocation bin\r
+ //\r
+ if (MaxAddress >= mDefaultMaximumAddress) {\r
+ Start = CoreFindFreePagesI (\r
+ mDefaultMaximumAddress,\r
+ 0,\r
+ NoPages,\r
+ NewType,\r
+ Alignment,\r
+ NeedGuard\r
+ );\r
+ if (Start != 0) {\r
+ if (Start < mDefaultBaseAddress) {\r
+ mDefaultBaseAddress = Start;\r
+ }\r
\r
- //\r
- // Allocate memory again after the memory resource re-arranged\r
- //\r
- Start = CoreFindFreePagesI (MaxAddress, NoPages, NewType, Alignment);\r
+ return Start;\r
}\r
}\r
\r
- return Start;\r
-}\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 (\r
+ MaxAddress,\r
+ 0,\r
+ NoPages,\r
+ NewType,\r
+ Alignment,\r
+ NeedGuard\r
+ );\r
+ if (Start != 0) {\r
+ return Start;\r
+ }\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
+ //\r
+ // If any memory resources were promoted, then re-attempt the allocation\r
+ //\r
+ return FindFreePages (MaxAddress, NoPages, NewType, Alignment, NeedGuard);\r
+}\r
\r
/**\r
Allocates pages from the memory map.\r
@param NumberOfPages The number of pages to allocate\r
@param Memory A pointer to receive the base allocated memory\r
address\r
+ @param NeedGuard Flag to indicate Guard page is needed or not\r
\r
@return Status. On success, Memory is filled in with the base address allocated\r
@retval EFI_INVALID_PARAMETER Parameters violate checking rules defined in\r
**/\r
EFI_STATUS\r
EFIAPI\r
-CoreAllocatePages (\r
- IN EFI_ALLOCATE_TYPE Type,\r
- IN EFI_MEMORY_TYPE MemoryType,\r
- IN UINTN NumberOfPages,\r
- IN OUT EFI_PHYSICAL_ADDRESS *Memory\r
+CoreInternalAllocatePages (\r
+ IN EFI_ALLOCATE_TYPE Type,\r
+ IN EFI_MEMORY_TYPE MemoryType,\r
+ IN UINTN NumberOfPages,\r
+ IN OUT EFI_PHYSICAL_ADDRESS *Memory,\r
+ IN BOOLEAN NeedGuard\r
)\r
{\r
- EFI_STATUS Status;\r
- UINT64 Start;\r
- UINT64 MaxAddress;\r
- UINTN Alignment;\r
-\r
- if (Type < AllocateAnyPages || Type >= (UINTN) MaxAllocateType) {\r
+ EFI_STATUS Status;\r
+ UINT64 Start;\r
+ UINT64 NumberOfBytes;\r
+ UINT64 End;\r
+ UINT64 MaxAddress;\r
+ UINTN Alignment;\r
+ EFI_MEMORY_TYPE CheckType;\r
+\r
+ if ((UINT32)Type >= MaxAllocateType) {\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
- if ((MemoryType >= EfiMaxMemoryType && MemoryType <= 0x7fffffff) ||\r
- MemoryType == EfiConventionalMemory) {\r
+ if (((MemoryType >= EfiMaxMemoryType) && (MemoryType < MEMORY_TYPE_OEM_RESERVED_MIN)) ||\r
+ (MemoryType == EfiConventionalMemory) || (MemoryType == EfiPersistentMemory))\r
+ {\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
- Alignment = EFI_DEFAULT_PAGE_ALLOCATION_ALIGNMENT;\r
+ if (Memory == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
\r
- if (MemoryType == EfiACPIReclaimMemory ||\r
- MemoryType == EfiACPIMemoryNVS ||\r
- MemoryType == EfiRuntimeServicesCode ||\r
- MemoryType == EfiRuntimeServicesData) {\r
+ Alignment = DEFAULT_PAGE_ALLOCATION_GRANULARITY;\r
\r
- Alignment = EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT;\r
+ if ((MemoryType == EfiACPIReclaimMemory) ||\r
+ (MemoryType == EfiACPIMemoryNVS) ||\r
+ (MemoryType == EfiRuntimeServicesCode) ||\r
+ (MemoryType == EfiRuntimeServicesData))\r
+ {\r
+ Alignment = RUNTIME_PAGE_ALLOCATION_GRANULARITY;\r
}\r
\r
if (Type == AllocateAddress) {\r
//\r
// The max address is the max natively addressable address for the processor\r
//\r
- MaxAddress = EFI_MAX_ADDRESS;\r
+ MaxAddress = MAX_ALLOC_ADDRESS;\r
+\r
+ //\r
+ // Check for Type AllocateAddress,\r
+ // if NumberOfPages is 0 or\r
+ // if (NumberOfPages << EFI_PAGE_SHIFT) is above MAX_ALLOC_ADDRESS or\r
+ // if (Start + NumberOfBytes) rolls over 0 or\r
+ // if Start is above MAX_ALLOC_ADDRESS or\r
+ // if End is above MAX_ALLOC_ADDRESS,\r
+ // if Start..End overlaps any tracked MemoryTypeStatistics range\r
+ // return EFI_NOT_FOUND.\r
+ //\r
+ if (Type == AllocateAddress) {\r
+ if ((NumberOfPages == 0) ||\r
+ (NumberOfPages > RShiftU64 (MaxAddress, EFI_PAGE_SHIFT)))\r
+ {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+\r
+ NumberOfBytes = LShiftU64 (NumberOfPages, EFI_PAGE_SHIFT);\r
+ End = Start + NumberOfBytes - 1;\r
+\r
+ if ((Start >= End) ||\r
+ (Start > MaxAddress) ||\r
+ (End > MaxAddress))\r
+ {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+\r
+ //\r
+ // A driver is allowed to call AllocatePages using an AllocateAddress type. This type of\r
+ // AllocatePage request the exact physical address if it is not used. The existing code\r
+ // will allow this request even in 'special' pages. The problem with this is that the\r
+ // reason to have 'special' pages for OS hibernate/resume is defeated as memory is\r
+ // fragmented.\r
+ //\r
+\r
+ for (CheckType = (EFI_MEMORY_TYPE)0; CheckType < EfiMaxMemoryType; CheckType++) {\r
+ if ((MemoryType != CheckType) &&\r
+ mMemoryTypeStatistics[CheckType].Special &&\r
+ (mMemoryTypeStatistics[CheckType].NumberOfPages > 0))\r
+ {\r
+ if ((Start >= mMemoryTypeStatistics[CheckType].BaseAddress) &&\r
+ (Start <= mMemoryTypeStatistics[CheckType].MaximumAddress))\r
+ {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+\r
+ if ((End >= mMemoryTypeStatistics[CheckType].BaseAddress) &&\r
+ (End <= mMemoryTypeStatistics[CheckType].MaximumAddress))\r
+ {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+\r
+ if ((Start < mMemoryTypeStatistics[CheckType].BaseAddress) &&\r
+ (End > mMemoryTypeStatistics[CheckType].MaximumAddress))\r
+ {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+ }\r
+ }\r
+ }\r
\r
if (Type == AllocateMaxAddress) {\r
MaxAddress = Start;\r
// If not a specific address, then find an address to allocate\r
//\r
if (Type != AllocateAddress) {\r
- Start = FindFreePages (MaxAddress, NumberOfPages, MemoryType, Alignment);\r
+ Start = FindFreePages (\r
+ MaxAddress,\r
+ NumberOfPages,\r
+ MemoryType,\r
+ Alignment,\r
+ NeedGuard\r
+ );\r
if (Start == 0) {\r
Status = EFI_OUT_OF_RESOURCES;\r
goto Done;\r
//\r
// Convert pages from FreeMemory to the requested type\r
//\r
- Status = CoreConvertPages (Start, NumberOfPages, MemoryType);\r
+ if (NeedGuard) {\r
+ Status = CoreConvertPagesWithGuard (Start, NumberOfPages, MemoryType);\r
+ } else {\r
+ Status = CoreConvertPages (Start, NumberOfPages, MemoryType);\r
+ }\r
\r
Done:\r
CoreReleaseMemoryLock ();\r
\r
if (!EFI_ERROR (Status)) {\r
+ if (NeedGuard) {\r
+ SetGuardForMemory (Start, NumberOfPages);\r
+ }\r
+\r
*Memory = Start;\r
}\r
\r
return Status;\r
}\r
\r
+/**\r
+ Allocates pages from the memory map.\r
+\r
+ @param Type The type of allocation to perform\r
+ @param MemoryType The type of memory to turn the allocated pages\r
+ into\r
+ @param NumberOfPages The number of pages to allocate\r
+ @param Memory A pointer to receive the base allocated memory\r
+ address\r
+\r
+ @return Status. On success, Memory is filled in with the base address allocated\r
+ @retval EFI_INVALID_PARAMETER Parameters violate checking rules defined in\r
+ spec.\r
+ @retval EFI_NOT_FOUND Could not allocate pages match the requirement.\r
+ @retval EFI_OUT_OF_RESOURCES No enough pages to allocate.\r
+ @retval EFI_SUCCESS Pages successfully allocated.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+CoreAllocatePages (\r
+ IN EFI_ALLOCATE_TYPE Type,\r
+ IN EFI_MEMORY_TYPE MemoryType,\r
+ IN UINTN NumberOfPages,\r
+ OUT EFI_PHYSICAL_ADDRESS *Memory\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ BOOLEAN NeedGuard;\r
+\r
+ NeedGuard = IsPageTypeToGuard (MemoryType, Type) && !mOnGuarding;\r
+ Status = CoreInternalAllocatePages (\r
+ Type,\r
+ MemoryType,\r
+ NumberOfPages,\r
+ Memory,\r
+ NeedGuard\r
+ );\r
+ if (!EFI_ERROR (Status)) {\r
+ CoreUpdateProfile (\r
+ (EFI_PHYSICAL_ADDRESS)(UINTN)RETURN_ADDRESS (0),\r
+ MemoryProfileActionAllocatePages,\r
+ MemoryType,\r
+ EFI_PAGES_TO_SIZE (NumberOfPages),\r
+ (VOID *)(UINTN)*Memory,\r
+ NULL\r
+ );\r
+ InstallMemoryAttributesTableOnMemoryAllocation (MemoryType);\r
+ ApplyMemoryProtectionPolicy (\r
+ EfiConventionalMemory,\r
+ MemoryType,\r
+ *Memory,\r
+ EFI_PAGES_TO_SIZE (NumberOfPages)\r
+ );\r
+ }\r
+\r
+ return Status;\r
+}\r
\r
/**\r
Frees previous allocated pages.\r
\r
@param Memory Base address of memory being freed\r
@param NumberOfPages The number of pages to free\r
+ @param MemoryType Pointer to memory type\r
\r
@retval EFI_NOT_FOUND Could not find the entry that covers the range\r
@retval EFI_INVALID_PARAMETER Address not aligned\r
**/\r
EFI_STATUS\r
EFIAPI\r
-CoreFreePages (\r
- IN EFI_PHYSICAL_ADDRESS Memory,\r
- IN UINTN NumberOfPages\r
+CoreInternalFreePages (\r
+ IN EFI_PHYSICAL_ADDRESS Memory,\r
+ IN UINTN NumberOfPages,\r
+ OUT EFI_MEMORY_TYPE *MemoryType OPTIONAL\r
)\r
{\r
- EFI_STATUS Status;\r
- LIST_ENTRY *Link;\r
- MEMORY_MAP *Entry;\r
- UINTN Alignment;\r
+ EFI_STATUS Status;\r
+ LIST_ENTRY *Link;\r
+ MEMORY_MAP *Entry;\r
+ UINTN Alignment;\r
+ BOOLEAN IsGuarded;\r
\r
//\r
// Free the range\r
//\r
// Find the entry that the covers the range\r
//\r
- Entry = NULL;\r
+ IsGuarded = FALSE;\r
+ Entry = NULL;\r
for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {\r
- Entry = CR(Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r
- if (Entry->Start <= Memory && Entry->End > Memory) {\r
- break;\r
+ Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r
+ if ((Entry->Start <= Memory) && (Entry->End > Memory)) {\r
+ break;\r
}\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
- if (Entry->Type == EfiACPIReclaimMemory ||\r
- Entry->Type == EfiACPIMemoryNVS ||\r
- Entry->Type == EfiRuntimeServicesCode ||\r
- Entry->Type == EfiRuntimeServicesData) {\r
-\r
- Alignment = EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT;\r
+ Alignment = DEFAULT_PAGE_ALLOCATION_GRANULARITY;\r
\r
+ ASSERT (Entry != NULL);\r
+ if ((Entry->Type == EfiACPIReclaimMemory) ||\r
+ (Entry->Type == EfiACPIMemoryNVS) ||\r
+ (Entry->Type == EfiRuntimeServicesCode) ||\r
+ (Entry->Type == EfiRuntimeServicesData))\r
+ {\r
+ Alignment = RUNTIME_PAGE_ALLOCATION_GRANULARITY;\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
NumberOfPages &= ~(EFI_SIZE_TO_PAGES (Alignment) - 1);\r
\r
- Status = CoreConvertPages (Memory, NumberOfPages, EfiConventionalMemory);\r
+ if (MemoryType != NULL) {\r
+ *MemoryType = Entry->Type;\r
+ }\r
+\r
+ IsGuarded = IsPageTypeToGuard (Entry->Type, AllocateAnyPages) &&\r
+ IsMemoryGuarded (Memory);\r
+ if (IsGuarded) {\r
+ Status = CoreConvertPagesWithGuard (\r
+ Memory,\r
+ NumberOfPages,\r
+ EfiConventionalMemory\r
+ );\r
+ } else {\r
+ Status = CoreConvertPages (Memory, NumberOfPages, EfiConventionalMemory);\r
+ }\r
\r
+Done:\r
CoreReleaseMemoryLock ();\r
+ return Status;\r
+}\r
+\r
+/**\r
+ Frees previous allocated pages.\r
+\r
+ @param Memory Base address of memory being freed\r
+ @param NumberOfPages The number of pages to free\r
+\r
+ @retval EFI_NOT_FOUND Could not find the entry that covers the range\r
+ @retval EFI_INVALID_PARAMETER Address not aligned\r
+ @return EFI_SUCCESS -Pages successfully freed.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+CoreFreePages (\r
+ IN EFI_PHYSICAL_ADDRESS Memory,\r
+ IN UINTN NumberOfPages\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_MEMORY_TYPE MemoryType;\r
\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
+ Status = CoreInternalFreePages (Memory, NumberOfPages, &MemoryType);\r
+ if (!EFI_ERROR (Status)) {\r
+ GuardFreedPagesChecked (Memory, NumberOfPages);\r
+ CoreUpdateProfile (\r
+ (EFI_PHYSICAL_ADDRESS)(UINTN)RETURN_ADDRESS (0),\r
+ MemoryProfileActionFreePages,\r
+ MemoryType,\r
+ EFI_PAGES_TO_SIZE (NumberOfPages),\r
+ (VOID *)(UINTN)Memory,\r
+ NULL\r
+ );\r
+ InstallMemoryAttributesTableOnMemoryAllocation (MemoryType);\r
+ ApplyMemoryProtectionPolicy (\r
+ MemoryType,\r
+ EfiConventionalMemory,\r
+ Memory,\r
+ EFI_PAGES_TO_SIZE (NumberOfPages)\r
+ );\r
}\r
\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
OUT UINT32 *DescriptorVersion\r
)\r
{\r
- EFI_STATUS Status;\r
- UINTN Size;\r
- UINTN BufferSize;\r
- UINTN NumberOfRuntimeEntries;\r
- LIST_ENTRY *Link;\r
- MEMORY_MAP *Entry;\r
- EFI_GCD_MAP_ENTRY *GcdMapEntry;\r
- EFI_MEMORY_TYPE Type;\r
+ EFI_STATUS Status;\r
+ UINTN Size;\r
+ UINTN BufferSize;\r
+ UINTN NumberOfEntries;\r
+ LIST_ENTRY *Link;\r
+ MEMORY_MAP *Entry;\r
+ EFI_GCD_MAP_ENTRY *GcdMapEntry;\r
+ EFI_GCD_MAP_ENTRY MergeGcdMapEntry;\r
+ EFI_MEMORY_TYPE Type;\r
+ EFI_MEMORY_DESCRIPTOR *MemoryMapStart;\r
+ EFI_MEMORY_DESCRIPTOR *MemoryMapEnd;\r
\r
//\r
// Make sure the parameters are valid\r
CoreAcquireGcdMemoryLock ();\r
\r
//\r
- // Count the number of Reserved and MMIO entries that are marked for runtime use\r
+ // Count the number of Reserved and runtime MMIO entries\r
+ // And, count the number of Persistent entries.\r
//\r
- NumberOfRuntimeEntries = 0;\r
+ NumberOfEntries = 0;\r
for (Link = mGcdMemorySpaceMap.ForwardLink; Link != &mGcdMemorySpaceMap; Link = Link->ForwardLink) {\r
GcdMapEntry = CR (Link, EFI_GCD_MAP_ENTRY, Link, EFI_GCD_MAP_SIGNATURE);\r
- if ((GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeReserved) ||\r
- (GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeMemoryMappedIo)) {\r
- if ((GcdMapEntry->Attributes & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) {\r
- NumberOfRuntimeEntries++;\r
- }\r
+ if ((GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypePersistent) ||\r
+ (GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeReserved) ||\r
+ ((GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeMemoryMappedIo) &&\r
+ ((GcdMapEntry->Attributes & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME)))\r
+ {\r
+ NumberOfEntries++;\r
}\r
}\r
\r
// prevent people from having pointer math bugs in their code.\r
// now you have to use *DescriptorSize to make things work.\r
//\r
- Size += sizeof(UINT64) - (Size % sizeof (UINT64));\r
+ Size += sizeof (UINT64) - (Size % sizeof (UINT64));\r
\r
if (DescriptorSize != NULL) {\r
*DescriptorSize = Size;\r
//\r
// Compute the buffer size needed to fit the entire map\r
//\r
- BufferSize = Size * NumberOfRuntimeEntries;\r
+ BufferSize = Size * NumberOfEntries;\r
for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {\r
BufferSize += Size;\r
}\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
// Convert internal map into an EFI_MEMORY_DESCRIPTOR\r
//\r
- MemoryMap->Type = Entry->Type;\r
- MemoryMap->PhysicalStart = Entry->Start;\r
- MemoryMap->VirtualStart = Entry->VirtualStart;\r
- MemoryMap->NumberOfPages = RShiftU64 (Entry->End - Entry->Start + 1, EFI_PAGE_SHIFT);\r
+ MemoryMap->Type = Entry->Type;\r
+ MemoryMap->PhysicalStart = Entry->Start;\r
+ MemoryMap->VirtualStart = Entry->VirtualStart;\r
+ MemoryMap->NumberOfPages = RShiftU64 (Entry->End - Entry->Start + 1, EFI_PAGE_SHIFT);\r
//\r
// If the memory type is EfiConventionalMemory, then determine if the range is part of a\r
// memory type bin and needs to be converted to the same memory type as the rest of the\r
// differences across reboots.\r
//\r
if (MemoryMap->Type == EfiConventionalMemory) {\r
- for (Type = (EFI_MEMORY_TYPE) 0; Type < EfiMaxMemoryType; Type++) {\r
+ for (Type = (EFI_MEMORY_TYPE)0; Type < EfiMaxMemoryType; Type++) {\r
if (mMemoryTypeStatistics[Type].Special &&\r
- mMemoryTypeStatistics[Type].NumberOfPages > 0 &&\r
- Entry->Start >= mMemoryTypeStatistics[Type].BaseAddress &&\r
- Entry->End <= mMemoryTypeStatistics[Type].MaximumAddress) {\r
+ (mMemoryTypeStatistics[Type].NumberOfPages > 0) &&\r
+ (Entry->Start >= mMemoryTypeStatistics[Type].BaseAddress) &&\r
+ (Entry->End <= mMemoryTypeStatistics[Type].MaximumAddress))\r
+ {\r
MemoryMap->Type = Type;\r
}\r
}\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
- GcdMapEntry = CR (Link, EFI_GCD_MAP_ENTRY, Link, EFI_GCD_MAP_SIGNATURE);\r
- if ((GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeReserved) ||\r
- (GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeMemoryMappedIo)) {\r
- if ((GcdMapEntry->Attributes & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) {\r
-\r
- MemoryMap->PhysicalStart = GcdMapEntry->BaseAddress;\r
- MemoryMap->VirtualStart = 0;\r
- MemoryMap->NumberOfPages = RShiftU64 ((GcdMapEntry->EndAddress - GcdMapEntry->BaseAddress + 1), EFI_PAGE_SHIFT);\r
- MemoryMap->Attribute = GcdMapEntry->Attributes & ~EFI_MEMORY_PORT_IO;\r
-\r
- if (GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeReserved) {\r
- MemoryMap->Type = EfiReservedMemoryType;\r
- } else if (GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeMemoryMappedIo) {\r
- if ((GcdMapEntry->Attributes & EFI_MEMORY_PORT_IO) == EFI_MEMORY_PORT_IO) {\r
- MemoryMap->Type = EfiMemoryMappedIOPortSpace;\r
- } else {\r
- MemoryMap->Type = EfiMemoryMappedIO;\r
- }\r
- }\r
+ ZeroMem (&MergeGcdMapEntry, sizeof (MergeGcdMapEntry));\r
+ GcdMapEntry = NULL;\r
+ for (Link = mGcdMemorySpaceMap.ForwardLink; ; Link = Link->ForwardLink) {\r
+ if (Link != &mGcdMemorySpaceMap) {\r
+ //\r
+ // Merge adjacent same type and attribute GCD memory range\r
+ //\r
+ GcdMapEntry = CR (Link, EFI_GCD_MAP_ENTRY, Link, EFI_GCD_MAP_SIGNATURE);\r
+\r
+ if ((MergeGcdMapEntry.Capabilities == GcdMapEntry->Capabilities) &&\r
+ (MergeGcdMapEntry.Attributes == GcdMapEntry->Attributes) &&\r
+ (MergeGcdMapEntry.GcdMemoryType == GcdMapEntry->GcdMemoryType) &&\r
+ (MergeGcdMapEntry.GcdIoType == GcdMapEntry->GcdIoType))\r
+ {\r
+ MergeGcdMapEntry.EndAddress = GcdMapEntry->EndAddress;\r
+ continue;\r
+ }\r
+ }\r
+\r
+ if ((MergeGcdMapEntry.GcdMemoryType == EfiGcdMemoryTypeReserved) ||\r
+ ((MergeGcdMapEntry.GcdMemoryType == EfiGcdMemoryTypeMemoryMappedIo) &&\r
+ ((MergeGcdMapEntry.Attributes & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME)))\r
+ {\r
+ //\r
+ // Page Align GCD range is required. When it is converted to EFI_MEMORY_DESCRIPTOR,\r
+ // it will be recorded as page PhysicalStart and NumberOfPages.\r
+ //\r
+ ASSERT ((MergeGcdMapEntry.BaseAddress & EFI_PAGE_MASK) == 0);\r
+ ASSERT (((MergeGcdMapEntry.EndAddress - MergeGcdMapEntry.BaseAddress + 1) & EFI_PAGE_MASK) == 0);\r
\r
- MemoryMap = NextMemoryDescriptor (MemoryMap, Size);\r
+ //\r
+ // Create EFI_MEMORY_DESCRIPTOR for every Reserved and runtime MMIO GCD entries\r
+ //\r
+ MemoryMap->PhysicalStart = MergeGcdMapEntry.BaseAddress;\r
+ MemoryMap->VirtualStart = 0;\r
+ MemoryMap->NumberOfPages = RShiftU64 ((MergeGcdMapEntry.EndAddress - MergeGcdMapEntry.BaseAddress + 1), EFI_PAGE_SHIFT);\r
+ MemoryMap->Attribute = (MergeGcdMapEntry.Attributes & ~EFI_MEMORY_PORT_IO) |\r
+ (MergeGcdMapEntry.Capabilities & (EFI_CACHE_ATTRIBUTE_MASK | EFI_MEMORY_ATTRIBUTE_MASK));\r
+\r
+ if (MergeGcdMapEntry.GcdMemoryType == EfiGcdMemoryTypeReserved) {\r
+ MemoryMap->Type = EfiReservedMemoryType;\r
+ } else if (MergeGcdMapEntry.GcdMemoryType == EfiGcdMemoryTypeMemoryMappedIo) {\r
+ if ((MergeGcdMapEntry.Attributes & EFI_MEMORY_PORT_IO) == EFI_MEMORY_PORT_IO) {\r
+ MemoryMap->Type = EfiMemoryMappedIOPortSpace;\r
+ } else {\r
+ MemoryMap->Type = EfiMemoryMappedIO;\r
+ }\r
}\r
+\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
+ if (MergeGcdMapEntry.GcdMemoryType == EfiGcdMemoryTypePersistent) {\r
+ //\r
+ // Page Align GCD range is required. When it is converted to EFI_MEMORY_DESCRIPTOR,\r
+ // it will be recorded as page PhysicalStart and NumberOfPages.\r
+ //\r
+ ASSERT ((MergeGcdMapEntry.BaseAddress & EFI_PAGE_MASK) == 0);\r
+ ASSERT (((MergeGcdMapEntry.EndAddress - MergeGcdMapEntry.BaseAddress + 1) & EFI_PAGE_MASK) == 0);\r
+\r
+ //\r
+ // Create EFI_MEMORY_DESCRIPTOR for every Persistent GCD entries\r
+ //\r
+ MemoryMap->PhysicalStart = MergeGcdMapEntry.BaseAddress;\r
+ MemoryMap->VirtualStart = 0;\r
+ MemoryMap->NumberOfPages = RShiftU64 ((MergeGcdMapEntry.EndAddress - MergeGcdMapEntry.BaseAddress + 1), EFI_PAGE_SHIFT);\r
+ MemoryMap->Attribute = MergeGcdMapEntry.Attributes | EFI_MEMORY_NV |\r
+ (MergeGcdMapEntry.Capabilities & (EFI_CACHE_ATTRIBUTE_MASK | EFI_MEMORY_ATTRIBUTE_MASK));\r
+ MemoryMap->Type = EfiPersistentMemory;\r
+\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
+ if (Link == &mGcdMemorySpaceMap) {\r
+ //\r
+ // break loop when arrive at head.\r
+ //\r
+ break;\r
+ }\r
+\r
+ if (GcdMapEntry != NULL) {\r
+ //\r
+ // Copy new GCD map entry for the following GCD range merge\r
+ //\r
+ CopyMem (&MergeGcdMapEntry, GcdMapEntry, sizeof (MergeGcdMapEntry));\r
}\r
}\r
\r
- Status = EFI_SUCCESS;\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
-Done:\r
+ //\r
+ // Note: Some OSs will treat EFI_MEMORY_DESCRIPTOR.Attribute as really\r
+ // set attributes and change memory paging attribute accordingly.\r
+ // But current EFI_MEMORY_DESCRIPTOR.Attribute is assigned by\r
+ // value from Capabilities in GCD memory map. This might cause\r
+ // boot problems. Clearing all page-access permission related\r
+ // capabilities can workaround it. Following code is supposed to\r
+ // be removed once the usage of EFI_MEMORY_DESCRIPTOR.Attribute\r
+ // is clarified in UEFI spec and adopted by both EDK-II Core and\r
+ // all supported OSs.\r
+ //\r
+ MemoryMapEnd = MemoryMap;\r
+ MemoryMap = MemoryMapStart;\r
+ while (MemoryMap < MemoryMapEnd) {\r
+ MemoryMap->Attribute &= ~(UINT64)EFI_MEMORY_ACCESS_MASK;\r
+ MemoryMap = NEXT_MEMORY_DESCRIPTOR (MemoryMap, Size);\r
+ }\r
\r
- CoreReleaseMemoryLock ();\r
+ MergeMemoryMap (MemoryMapStart, &BufferSize, Size);\r
+ MemoryMapEnd = (EFI_MEMORY_DESCRIPTOR *)((UINT8 *)MemoryMapStart + BufferSize);\r
\r
- CoreReleaseGcdMemoryLock ();\r
+ Status = EFI_SUCCESS;\r
\r
+Done:\r
//\r
// Update the map key finally\r
//\r
*MapKey = mMemoryMapKey;\r
}\r
\r
+ CoreReleaseMemoryLock ();\r
+\r
+ CoreReleaseGcdMemoryLock ();\r
+\r
*MemoryMapSize = BufferSize;\r
\r
+ DEBUG_CODE (\r
+ DumpGuardedMemoryBitmap ();\r
+ );\r
+\r
return Status;\r
}\r
\r
-\r
/**\r
Internal function. Used by the pool functions to allocate pages\r
to back pool allocation requests.\r
@param PoolType The type of memory for the new pool pages\r
@param NumberOfPages No of pages to allocate\r
@param Alignment Bits to align.\r
+ @param NeedGuard Flag to indicate Guard page is needed or not\r
\r
@return The allocated memory, or NULL\r
\r
**/\r
VOID *\r
CoreAllocatePoolPages (\r
- IN EFI_MEMORY_TYPE PoolType,\r
- IN UINTN NumberOfPages,\r
- IN UINTN Alignment\r
+ IN EFI_MEMORY_TYPE PoolType,\r
+ IN UINTN NumberOfPages,\r
+ IN UINTN Alignment,\r
+ IN BOOLEAN NeedGuard\r
)\r
{\r
- UINT64 Start;\r
+ UINT64 Start;\r
\r
//\r
// Find the pages to convert\r
//\r
- Start = FindFreePages (EFI_MAX_ADDRESS, NumberOfPages, PoolType, Alignment);\r
+ Start = FindFreePages (\r
+ MAX_ALLOC_ADDRESS,\r
+ NumberOfPages,\r
+ PoolType,\r
+ Alignment,\r
+ NeedGuard\r
+ );\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
+ if (NeedGuard) {\r
+ CoreConvertPagesWithGuard (Start, NumberOfPages, PoolType);\r
+ } else {\r
+ CoreConvertPages (Start, NumberOfPages, PoolType);\r
+ }\r
}\r
\r
- return (VOID *)(UINTN) Start;\r
+ return (VOID *)(UINTN)Start;\r
}\r
\r
-\r
/**\r
Internal function. Frees pool pages allocated via AllocatePoolPages ()\r
\r
**/\r
VOID\r
CoreFreePoolPages (\r
- IN EFI_PHYSICAL_ADDRESS Memory,\r
- IN UINTN NumberOfPages\r
+ IN EFI_PHYSICAL_ADDRESS Memory,\r
+ IN UINTN NumberOfPages\r
)\r
{\r
CoreConvertPages (Memory, NumberOfPages, EfiConventionalMemory);\r
}\r
\r
-\r
-\r
/**\r
Make sure the memory map is following all the construction rules,\r
it is the last time to check memory map error before exit boot services.\r
**/\r
EFI_STATUS\r
CoreTerminateMemoryMap (\r
- IN UINTN MapKey\r
+ IN UINTN MapKey\r
)\r
{\r
- EFI_STATUS Status;\r
- LIST_ENTRY *Link;\r
- MEMORY_MAP *Entry;\r
+ EFI_STATUS Status;\r
+ LIST_ENTRY *Link;\r
+ MEMORY_MAP *Entry;\r
\r
Status = EFI_SUCCESS;\r
\r
CoreAcquireMemoryLock ();\r
\r
if (MapKey == mMemoryMapKey) {\r
-\r
//\r
// Make sure the memory map is following all the construction rules\r
// This is the last chance we will be able to display any messages on\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->Type == EfiACPIReclaimMemory || Entry->Type == EfiACPIMemoryNVS) {\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 | 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 | DEBUG_PAGE, "ExitBootServices: A RUNTIME memory entry is not on a proper alignment.\n"));\r
- Status = EFI_INVALID_PARAMETER;\r
- goto Done;\r
+ Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);\r
+ if (Entry->Type < EfiMaxMemoryType) {\r
+ if (mMemoryTypeStatistics[Entry->Type].Runtime) {\r
+ ASSERT (Entry->Type != EfiACPIReclaimMemory);\r
+ ASSERT (Entry->Type != EfiACPIMemoryNVS);\r
+ if ((Entry->Start & (RUNTIME_PAGE_ALLOCATION_GRANULARITY - 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
+ if (((Entry->End + 1) & (RUNTIME_PAGE_ALLOCATION_GRANULARITY - 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
}\r
\r
return Status;\r
}\r
-\r
-\r
-\r
-\r
-\r
-\r
-\r
-\r
-\r
projects / mirror_edk2.git / blobdiff