diff options
Diffstat (limited to 'EdkModulePkg/Core/Dxe/Mem/Page.c')
| -rw-r--r-- | EdkModulePkg/Core/Dxe/Mem/Page.c | 1656 |
1 files changed, 0 insertions, 1656 deletions
diff --git a/EdkModulePkg/Core/Dxe/Mem/Page.c b/EdkModulePkg/Core/Dxe/Mem/Page.c deleted file mode 100644 index c4f3274906..0000000000 --- a/EdkModulePkg/Core/Dxe/Mem/Page.c +++ /dev/null @@ -1,1656 +0,0 @@ -/*++
-
-Copyright (c) 2007, Intel Corporation
-All rights reserved. This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD License
-which accompanies this distribution. The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-Module Name:
-
- page.c
-
-Abstract:
-
- EFI Memory page management
-
-
-Revision History
-
---*/
-
-#include <DxeMain.h>
-
-#define EFI_DEFAULT_PAGE_ALLOCATION_ALIGNMENT (EFI_PAGE_SIZE)
-
-//
-// Entry for tracking the memory regions for each memory type to help cooalese like memory types
-//
-typedef struct {
- EFI_PHYSICAL_ADDRESS BaseAddress;
- EFI_PHYSICAL_ADDRESS MaximumAddress;
- UINT64 CurrentNumberOfPages;
- UINTN InformationIndex;
-} EFI_MEMORY_TYPE_STAISTICS;
-
-//
-// MemoryMap - The current memory map
-//
-UINTN mMemoryMapKey = 0;
-
-//
-// mMapStack - space to use as temp storage to build new map descriptors
-// mMapDepth - depth of new descriptor stack
-//
-
-#define MAX_MAP_DEPTH 6
-UINTN mMapDepth = 0;
-MEMORY_MAP mMapStack[MAX_MAP_DEPTH];
-UINTN mFreeMapStack = 0;
-//
-// This list maintain the free memory map list
-//
-LIST_ENTRY mFreeMemoryMapEntryList = INITIALIZE_LIST_HEAD_VARIABLE (mFreeMemoryMapEntryList);
-BOOLEAN mMemoryTypeInformationInitialized = FALSE;
-
-EFI_MEMORY_TYPE_STAISTICS mMemoryTypeStatistics[EfiMaxMemoryType + 1] = {
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiReservedMemoryType
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiLoaderCode
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiLoaderData
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiBootServicesCode
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiBootServicesData
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiRuntimeServicesCode
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiRuntimeServicesData
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiConventionalMemory
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiUnusableMemory
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiACPIReclaimMemory
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiACPIMemoryNVS
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiMemoryMappedIO
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiMemoryMappedIOPortSpace
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType }, // EfiPalCode
- { 0, EFI_MAX_ADDRESS, 0, EfiMaxMemoryType } // EfiMaxMemoryType
-};
-
-EFI_PHYSICAL_ADDRESS mDefaultMaximumAddress = EFI_MAX_ADDRESS;
-
-EFI_MEMORY_TYPE_INFORMATION gMemoryTypeInformation[EfiMaxMemoryType + 1] = {
- { EfiReservedMemoryType, 0 },
- { EfiLoaderCode, 0 },
- { EfiLoaderData, 0 },
- { EfiBootServicesCode, 0 },
- { EfiBootServicesData, 0 },
- { EfiRuntimeServicesCode, 0 },
- { EfiRuntimeServicesData, 0 },
- { EfiConventionalMemory, 0 },
- { EfiUnusableMemory, 0 },
- { EfiACPIReclaimMemory, 0 },
- { EfiACPIMemoryNVS, 0 },
- { EfiMemoryMappedIO, 0 },
- { EfiMemoryMappedIOPortSpace, 0 },
- { EfiPalCode, 0 },
- { EfiMaxMemoryType, 0 }
-};
-
-//
-// Internal prototypes
-//
-STATIC
-VOID
-PromoteMemoryResource (
- VOID
-);
-
-STATIC
-VOID
-CoreAddRange (
- IN EFI_MEMORY_TYPE Type,
- IN EFI_PHYSICAL_ADDRESS Start,
- IN EFI_PHYSICAL_ADDRESS End,
- IN UINT64 Attribute
- );
-
-STATIC
-VOID
-CoreFreeMemoryMapStack (
- VOID
- );
-
-STATIC
-EFI_STATUS
-CoreConvertPages (
- IN UINT64 Start,
- IN UINT64 NumberOfPages,
- IN EFI_MEMORY_TYPE NewType
- );
-
-STATIC
-VOID
-RemoveMemoryMapEntry (
- MEMORY_MAP *Entry
- );
-
-STATIC
-MEMORY_MAP *
-AllocateMemoryMapEntry (
- VOID
- );
-
-VOID
-CoreAcquireMemoryLock (
- VOID
- )
-/*++
-
-Routine Description:
-
- Enter critical section by gaining lock on gMemoryLock
-
-Arguments:
-
- None
-
-Returns:
-
- None
-
---*/
-{
- CoreAcquireLock (&gMemoryLock);
-}
-
-
-VOID
-CoreReleaseMemoryLock (
- VOID
- )
-/*++
-
-Routine Description:
-
- Exit critical section by releasing lock on gMemoryLock
-
-Arguments:
-
- None
-
-Returns:
-
- None
-
---*/
-{
- CoreReleaseLock (&gMemoryLock);
-}
-
-STATIC
-VOID
-PromoteMemoryResource (
- VOID
- )
-/*++
-
-Routine Description:
-
- Find untested but initialized memory regions in GCD map and convert them to be DXE allocatable.
-
-Arguments:
-
- None
-
-Returns:
-
- None
-
---*/
-{
- LIST_ENTRY *Link;
- EFI_GCD_MAP_ENTRY *Entry;
-
- DEBUG ((EFI_D_ERROR | EFI_D_PAGE, "Promote the memory resource\n"));
-
- CoreAcquireGcdMemoryLock ();
-
- Link = mGcdMemorySpaceMap.ForwardLink;
- while (Link != &mGcdMemorySpaceMap) {
-
- Entry = CR (Link, EFI_GCD_MAP_ENTRY, Link, EFI_GCD_MAP_SIGNATURE);
-
- if (Entry->GcdMemoryType == EfiGcdMemoryTypeReserved &&
- Entry->EndAddress < EFI_MAX_ADDRESS &&
- (Entry->Capabilities & (EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED | EFI_MEMORY_TESTED)) ==
- (EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED)) {
- //
- // Update the GCD map
- //
- Entry->GcdMemoryType = EfiGcdMemoryTypeSystemMemory;
- Entry->Capabilities |= EFI_MEMORY_TESTED;
- Entry->ImageHandle = gDxeCoreImageHandle;
- Entry->DeviceHandle = NULL;
-
- //
- // Add to allocable system memory resource
- //
-
- CoreAddRange (
- EfiConventionalMemory,
- Entry->BaseAddress,
- Entry->EndAddress,
- Entry->Capabilities & ~(EFI_MEMORY_PRESENT | EFI_MEMORY_INITIALIZED | EFI_MEMORY_TESTED | EFI_MEMORY_RUNTIME)
- );
- CoreFreeMemoryMapStack ();
-
- }
-
- Link = Link->ForwardLink;
- }
-
- CoreReleaseGcdMemoryLock ();
-
- return;
-}
-
-VOID
-CoreAddMemoryDescriptor (
- IN EFI_MEMORY_TYPE Type,
- IN EFI_PHYSICAL_ADDRESS Start,
- IN UINT64 NumberOfPages,
- IN UINT64 Attribute
- )
-/*++
-
-Routine Description:
-
- Called to initialize the memory map and add descriptors to
- the current descriptor list.
-
- The first descriptor that is added must be general usable
- memory as the addition allocates heap.
-
-Arguments:
-
- Type - The type of memory to add
-
- Start - The starting address in the memory range
- Must be page aligned
-
- NumberOfPages - The number of pages in the range
-
- Attribute - Attributes of the memory to add
-
-Returns:
-
- None. The range is added to the memory map
-
---*/
-{
- EFI_PHYSICAL_ADDRESS End;
- EFI_STATUS Status;
- UINTN Index;
- UINTN FreeIndex;
-
- if ((Start & EFI_PAGE_MASK) != 0) {
- return;
- }
-
- if (Type >= EfiMaxMemoryType && Type <= 0x7fffffff) {
- return;
- }
-
- CoreAcquireMemoryLock ();
- End = Start + LShiftU64 (NumberOfPages, EFI_PAGE_SHIFT) - 1;
- CoreAddRange (Type, Start, End, Attribute);
- CoreFreeMemoryMapStack ();
- CoreReleaseMemoryLock ();
-
- //
- // Check to see if the statistics for the different memory types have already been established
- //
- if (mMemoryTypeInformationInitialized) {
- return;
- }
-
- //
- // Loop through each memory type in the order specified by the gMemoryTypeInformation[] array
- //
- for (Index = 0; gMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {
- //
- // Make sure the memory type in the gMemoryTypeInformation[] array is valid
- //
- Type = (EFI_MEMORY_TYPE) (gMemoryTypeInformation[Index].Type);
- if (Type < 0 || Type > EfiMaxMemoryType) {
- continue;
- }
-
- if (gMemoryTypeInformation[Index].NumberOfPages != 0) {
- //
- // Allocate pages for the current memory type from the top of available memory
- //
- Status = CoreAllocatePages (
- AllocateAnyPages,
- Type,
- gMemoryTypeInformation[Index].NumberOfPages,
- &mMemoryTypeStatistics[Type].BaseAddress
- );
- if (EFI_ERROR (Status)) {
- //
- // If an error occurs allocating the pages for the current memory type, then
- // free all the pages allocates for the previous memory types and return. This
- // operation with be retied when/if more memory is added to the system
- //
- for (FreeIndex = 0; FreeIndex < Index; FreeIndex++) {
- //
- // Make sure the memory type in the gMemoryTypeInformation[] array is valid
- //
- Type = (EFI_MEMORY_TYPE) (gMemoryTypeInformation[FreeIndex].Type);
- if (Type < 0 || Type > EfiMaxMemoryType) {
- continue;
- }
-
- if (gMemoryTypeInformation[FreeIndex].NumberOfPages != 0) {
- CoreFreePages (
- mMemoryTypeStatistics[Type].BaseAddress,
- gMemoryTypeInformation[FreeIndex].NumberOfPages
- );
- mMemoryTypeStatistics[Type].BaseAddress = 0;
- mMemoryTypeStatistics[Type].MaximumAddress = EFI_MAX_ADDRESS;
- }
- }
- return;
- }
-
- //
- // Compute the address at the top of the current statistics
- //
- mMemoryTypeStatistics[Type].MaximumAddress =
- mMemoryTypeStatistics[Type].BaseAddress +
- LShiftU64 (gMemoryTypeInformation[Index].NumberOfPages, EFI_PAGE_SHIFT) - 1;
-
- //
- // If the current base address is the lowest address so far, then update the default
- // maximum address
- //
- if (mMemoryTypeStatistics[Type].BaseAddress < mDefaultMaximumAddress) {
- mDefaultMaximumAddress = mMemoryTypeStatistics[Type].BaseAddress - 1;
- }
- }
- }
-
- //
- // There was enough system memory for all the the memory types were allocated. So,
- // those memory areas can be freed for future allocations, and all future memory
- // allocations can occur within their respective bins
- //
- for (Index = 0; gMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {
- //
- // Make sure the memory type in the gMemoryTypeInformation[] array is valid
- //
- Type = (EFI_MEMORY_TYPE) (gMemoryTypeInformation[Index].Type);
- if (Type < 0 || Type > EfiMaxMemoryType) {
- continue;
- }
-
- if (gMemoryTypeInformation[Index].NumberOfPages != 0) {
- CoreFreePages (
- mMemoryTypeStatistics[Type].BaseAddress,
- gMemoryTypeInformation[Index].NumberOfPages
- );
- gMemoryTypeInformation[Index].NumberOfPages = 0;
- }
- }
-
- //
- // If the number of pages reserved for a memory type is 0, then all allocations for that type
- // should be in the default range.
- //
- for (Type = (EFI_MEMORY_TYPE) 0; Type < EfiMaxMemoryType; Type++) {
- for (Index = 0; gMemoryTypeInformation[Index].Type != EfiMaxMemoryType; Index++) {
- if (Type == (EFI_MEMORY_TYPE)gMemoryTypeInformation[Index].Type) {
- mMemoryTypeStatistics[Type].InformationIndex = Index;
- }
- }
- mMemoryTypeStatistics[Type].CurrentNumberOfPages = 0;
- if (mMemoryTypeStatistics[Type].MaximumAddress == EFI_MAX_ADDRESS) {
- mMemoryTypeStatistics[Type].MaximumAddress = mDefaultMaximumAddress;
- }
- }
-
- mMemoryTypeInformationInitialized = TRUE;
-}
-
-
-STATIC
-VOID
-CoreAddRange (
- IN EFI_MEMORY_TYPE Type,
- IN EFI_PHYSICAL_ADDRESS Start,
- IN EFI_PHYSICAL_ADDRESS End,
- IN UINT64 Attribute
- )
-/*++
-
-Routine Description:
-
- Internal function. Adds a ranges to the memory map.
- The range must not already exist in the map.
-
-Arguments:
-
- Type - The type of memory range to add
-
- Start - The starting address in the memory range
- Must be paged aligned
-
- End - The last address in the range
- Must be the last byte of a page
-
- Attribute - The attributes of the memory range to add
-
-Returns:
-
- None. The range is added to the memory map
-
---*/
-{
- LIST_ENTRY *Link;
- MEMORY_MAP *Entry;
-
- ASSERT ((Start & EFI_PAGE_MASK) == 0);
- ASSERT (End > Start) ;
-
- ASSERT_LOCKED (&gMemoryLock);
-
- DEBUG ((EFI_D_PAGE, "AddRange: %lx-%lx to %d\n", Start, End, Type));
-
- //
- // Memory map being altered so updated key
- //
- mMemoryMapKey += 1;
-
- //
- // UEFI 2.0 added an event group for notificaiton on memory map changes.
- // So we need to signal this Event Group every time the memory map changes.
- // If we are in EFI 1.10 compatability mode no event groups will be
- // found and nothing will happen we we call this function. These events
- // will get signaled but since a lock is held around the call to this
- // function the notificaiton events will only be called after this funciton
- // returns and the lock is released.
- //
- CoreNotifySignalList (&gEfiEventMemoryMapChangeGuid);
-
- //
- // Look for adjoining memory descriptor
- //
-
- // Two memory descriptors can only be merged if they have the same Type
- // and the same Attribute
- //
-
- Link = gMemoryMap.ForwardLink;
- while (Link != &gMemoryMap) {
- Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
- Link = Link->ForwardLink;
-
- if (Entry->Type != Type) {
- continue;
- }
-
- if (Entry->Attribute != Attribute) {
- continue;
- }
-
- if (Entry->End + 1 == Start) {
-
- Start = Entry->Start;
- RemoveMemoryMapEntry (Entry);
-
- } else if (Entry->Start == End + 1) {
-
- End = Entry->End;
- RemoveMemoryMapEntry (Entry);
- }
- }
-
- //
- // Add descriptor
- //
-
- mMapStack[mMapDepth].Signature = MEMORY_MAP_SIGNATURE;
- mMapStack[mMapDepth].FromPages = FALSE;
- mMapStack[mMapDepth].Type = Type;
- mMapStack[mMapDepth].Start = Start;
- mMapStack[mMapDepth].End = End;
- mMapStack[mMapDepth].VirtualStart = 0;
- mMapStack[mMapDepth].Attribute = Attribute;
- InsertTailList (&gMemoryMap, &mMapStack[mMapDepth].Link);
-
- mMapDepth += 1;
- ASSERT (mMapDepth < MAX_MAP_DEPTH);
-
- return ;
-}
-
-STATIC
-VOID
-CoreFreeMemoryMapStack (
- VOID
- )
-/*++
-
-Routine Description:
-
- Internal function. Moves any memory descriptors that are on the
- temporary descriptor stack to heap.
-
-Arguments:
-
- None
-
-Returns:
-
- None
-
---*/
-{
- MEMORY_MAP *Entry;
- MEMORY_MAP *Entry2;
- LIST_ENTRY *Link2;
-
- ASSERT_LOCKED (&gMemoryLock);
-
- //
- // If already freeing the map stack, then return
- //
- if (mFreeMapStack) {
- return ;
- }
-
- //
- // Move the temporary memory descriptor stack into pool
- //
- mFreeMapStack += 1;
-
- while (mMapDepth) {
- //
- // Deque an memory map entry from mFreeMemoryMapEntryList
- //
- Entry = AllocateMemoryMapEntry ();
-
- ASSERT (Entry);
-
- //
- // Update to proper entry
- //
- mMapDepth -= 1;
-
- if (mMapStack[mMapDepth].Link.ForwardLink != NULL) {
-
- //
- // Move this entry to general memory
- //
- RemoveEntryList (&mMapStack[mMapDepth].Link);
- mMapStack[mMapDepth].Link.ForwardLink = NULL;
-
- CopyMem (Entry , &mMapStack[mMapDepth], sizeof (MEMORY_MAP));
- Entry->FromPages = TRUE;
-
- //
- // Find insertion location
- //
- for (Link2 = gMemoryMap.ForwardLink; Link2 != &gMemoryMap; Link2 = Link2->ForwardLink) {
- Entry2 = CR (Link2, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
- if (Entry2->FromPages && Entry2->Start > Entry->Start) {
- break;
- }
- }
-
- InsertTailList (Link2, &Entry->Link);
-
- } else {
- //
- // This item of mMapStack[mMapDepth] has already been dequeued from gMemoryMap list,
- // so here no need to move it to memory.
- //
- InsertTailList (&mFreeMemoryMapEntryList, &Entry->Link);
- }
- }
-
- mFreeMapStack -= 1;
-}
-
-STATIC
-VOID
-RemoveMemoryMapEntry (
- MEMORY_MAP *Entry
- )
-/*++
-
-Routine Description:
-
- Internal function. Removes a descriptor entry.
-
-Arguments:
-
- Entry - The entry to remove
-
-Returns:
-
- None
-
---*/
-{
- RemoveEntryList (&Entry->Link);
- Entry->Link.ForwardLink = NULL;
-
- if (Entry->FromPages) {
- //
- // Insert the free memory map descriptor to the end of mFreeMemoryMapEntryList
- //
- InsertTailList (&mFreeMemoryMapEntryList, &Entry->Link);
- }
-}
-
-STATIC
-MEMORY_MAP *
-AllocateMemoryMapEntry (
- VOID
- )
-/*++
-
-Routine Description:
-
- Internal function. Deque a descriptor entry from the mFreeMemoryMapEntryList.
- If the list is emtry, then allocate a new page to refuel the list.
- Please Note this algorithm to allocate the memory map descriptor has a property
- that the memory allocated for memory entries always grows, and will never really be freed
- For example, if the current boot uses 2000 memory map entries at the maximum point, but
- ends up with only 50 at the time the OS is booted, then the memory associated with the 1950
- memory map entries is still allocated from EfiBootServicesMemory.
-
-Arguments:
-
- NONE
-
-Returns:
-
- The Memory map descriptor dequed from the mFreeMemoryMapEntryList
-
---*/
-{
- MEMORY_MAP* FreeDescriptorEntries;
- MEMORY_MAP* Entry;
- UINTN Index;
-
- if (IsListEmpty (&mFreeMemoryMapEntryList)) {
- //
- // The list is empty, to allocate one page to refuel the list
- //
- FreeDescriptorEntries = CoreAllocatePoolPages (EfiBootServicesData, EFI_SIZE_TO_PAGES(DEFAULT_PAGE_ALLOCATION), DEFAULT_PAGE_ALLOCATION);
- if(FreeDescriptorEntries != NULL) {
- //
- // Enque the free memmory map entries into the list
- //
- for (Index = 0; Index< DEFAULT_PAGE_ALLOCATION / sizeof(MEMORY_MAP); Index++) {
- FreeDescriptorEntries[Index].Signature = MEMORY_MAP_SIGNATURE;
- InsertTailList (&mFreeMemoryMapEntryList, &FreeDescriptorEntries[Index].Link);
- }
- } else {
- return NULL;
- }
- }
- //
- // dequeue the first descriptor from the list
- //
- Entry = CR (mFreeMemoryMapEntryList.ForwardLink, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
- RemoveEntryList (&Entry->Link);
-
- return Entry;
-}
-
-STATIC
-EFI_STATUS
-CoreConvertPages (
- IN UINT64 Start,
- IN UINT64 NumberOfPages,
- IN EFI_MEMORY_TYPE NewType
- )
-/*++
-
-Routine Description:
-
- Internal function. Converts a memory range to the specified type.
- The range must exist in the memory map.
-
-Arguments:
-
- Start - The first address of the range
- Must be page aligned
-
- NumberOfPages - The number of pages to convert
-
- NewType - The new type for the memory range
-
-Returns:
-
- EFI_INVALID_PARAMETER - Invalid parameter
-
- EFI_NOT_FOUND - Could not find a descriptor cover the specified range
- or convertion not allowed.
-
- EFI_SUCCESS - Successfully converts the memory range to the specified type.
-
---*/
-{
-
- UINT64 NumberOfBytes;
- UINT64 End;
- UINT64 RangeEnd;
- UINT64 Attribute;
- LIST_ENTRY *Link;
- MEMORY_MAP *Entry;
-
- Entry = NULL;
- NumberOfBytes = LShiftU64 (NumberOfPages, EFI_PAGE_SHIFT);
- End = Start + NumberOfBytes - 1;
-
- ASSERT (NumberOfPages);
- ASSERT ((Start & EFI_PAGE_MASK) == 0);
- ASSERT (End > Start) ;
- ASSERT_LOCKED (&gMemoryLock);
-
- if (NumberOfPages == 0 || (Start & EFI_PAGE_MASK ) || (Start > (Start + NumberOfBytes))) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // Convert the entire range
- //
-
- while (Start < End) {
-
- //
- // Find the entry that the covers the range
- //
- for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {
- Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
-
- if (Entry->Start <= Start && Entry->End > Start) {
- break;
- }
- }
-
- if (Link == &gMemoryMap) {
- DEBUG ((EFI_D_ERROR | EFI_D_PAGE, "ConvertPages: failed to find range %lx - %lx\n", Start, End));
- return EFI_NOT_FOUND;
- }
-
- //
- // Convert range to the end, or to the end of the descriptor
- // if that's all we've got
- //
- RangeEnd = End;
- if (Entry->End < End) {
- RangeEnd = Entry->End;
- }
-
- DEBUG ((EFI_D_PAGE, "ConvertRange: %lx-%lx to %d\n", Start, RangeEnd, NewType));
-
- //
- // Debug code - verify conversion is allowed
- //
- if (!(NewType == EfiConventionalMemory ? 1 : 0) ^ (Entry->Type == EfiConventionalMemory ? 1 : 0)) {
- DEBUG ((EFI_D_ERROR , "ConvertPages: Incompatible memory types\n"));
- return EFI_NOT_FOUND;
- }
-
- //
- // Update counters for the number of pages allocated to each memory type
- //
- if (Entry->Type >= 0 && Entry->Type < EfiMaxMemoryType) {
- if (Start >= mMemoryTypeStatistics[Entry->Type].BaseAddress &&
- Start <= mMemoryTypeStatistics[Entry->Type].MaximumAddress) {
- if (NumberOfPages > mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages) {
- mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages = 0;
- } else {
- mMemoryTypeStatistics[Entry->Type].CurrentNumberOfPages -= NumberOfPages;
- }
- }
- }
-
- if (NewType >= 0 && NewType < EfiMaxMemoryType) {
- if (Start >= mMemoryTypeStatistics[NewType].BaseAddress && Start <= mMemoryTypeStatistics[NewType].MaximumAddress) {
- mMemoryTypeStatistics[NewType].CurrentNumberOfPages += NumberOfPages;
- if (mMemoryTypeStatistics[NewType].CurrentNumberOfPages >
- gMemoryTypeInformation[mMemoryTypeStatistics[NewType].InformationIndex].NumberOfPages) {
- gMemoryTypeInformation[mMemoryTypeStatistics[NewType].InformationIndex].NumberOfPages = (UINT32)mMemoryTypeStatistics[NewType].CurrentNumberOfPages;
- }
- }
- }
-
- //
- // Pull range out of descriptor
- //
- if (Entry->Start == Start) {
-
- //
- // Clip start
- //
- Entry->Start = RangeEnd + 1;
-
- } else if (Entry->End == RangeEnd) {
-
- //
- // Clip end
- //
- Entry->End = Start - 1;
-
- } else {
-
- //
- // Pull it out of the center, clip current
- //
-
- //
- // Add a new one
- //
- mMapStack[mMapDepth].Signature = MEMORY_MAP_SIGNATURE;
- mMapStack[mMapDepth].FromPages = FALSE;
- mMapStack[mMapDepth].Type = Entry->Type;
- mMapStack[mMapDepth].Start = RangeEnd+1;
- mMapStack[mMapDepth].End = Entry->End;
-
- //
- // Inherit Attribute from the Memory Descriptor that is being clipped
- //
- mMapStack[mMapDepth].Attribute = Entry->Attribute;
-
- Entry->End = Start - 1;
- ASSERT (Entry->Start < Entry->End);
-
- Entry = &mMapStack[mMapDepth];
- InsertTailList (&gMemoryMap, &Entry->Link);
-
- mMapDepth += 1;
- ASSERT (mMapDepth < MAX_MAP_DEPTH);
- }
-
- //
- // The new range inherits the same Attribute as the Entry
- //it is being cut out of
- //
- Attribute = Entry->Attribute;
-
- //
- // If the descriptor is empty, then remove it from the map
- //
- if (Entry->Start == Entry->End + 1) {
- RemoveMemoryMapEntry (Entry);
- Entry = NULL;
- }
-
- //
- // Add our new range in
- //
- CoreAddRange (NewType, Start, RangeEnd, Attribute);
-
- //
- // Move any map descriptor stack to general pool
- //
- CoreFreeMemoryMapStack ();
-
- //
- // Bump the starting address, and convert the next range
- //
- Start = RangeEnd + 1;
- }
-
- //
- // Converted the whole range, done
- //
-
- return EFI_SUCCESS;
-}
-
-
-STATIC
-UINT64
-CoreFindFreePagesI (
- IN UINT64 MaxAddress,
- IN UINT64 NumberOfPages,
- IN EFI_MEMORY_TYPE NewType,
- IN UINTN Alignment
- )
-/*++
-
-Routine Description:
-
- Internal function. Finds a consecutive free page range below
- the requested address.
-
-Arguments:
-
- MaxAddress - The address that the range must be below
-
- NumberOfPages - Number of pages needed
-
- NewType - The type of memory the range is going to be turned into
-
- Alignment - Bits to align with
-
-Returns:
-
- The base address of the range, or 0 if the range was not found
-
---*/
-{
- UINT64 NumberOfBytes;
- UINT64 Target;
- UINT64 DescStart;
- UINT64 DescEnd;
- UINT64 DescNumberOfBytes;
- LIST_ENTRY *Link;
- MEMORY_MAP *Entry;
-
- if ((MaxAddress < EFI_PAGE_MASK) ||(NumberOfPages == 0)) {
- return 0;
- }
-
- if ((MaxAddress & EFI_PAGE_MASK) != EFI_PAGE_MASK) {
-
- //
- // If MaxAddress is not aligned to the end of a page
- //
-
- //
- // Change MaxAddress to be 1 page lower
- //
- MaxAddress -= (EFI_PAGE_MASK + 1);
-
- //
- // Set MaxAddress to a page boundary
- //
- MaxAddress &= ~EFI_PAGE_MASK;
-
- //
- // Set MaxAddress to end of the page
- //
- MaxAddress |= EFI_PAGE_MASK;
- }
-
- NumberOfBytes = LShiftU64 (NumberOfPages, EFI_PAGE_SHIFT);
- Target = 0;
-
- for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {
- Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
-
- //
- // If it's not a free entry, don't bother with it
- //
- if (Entry->Type != EfiConventionalMemory) {
- continue;
- }
-
- DescStart = Entry->Start;
- DescEnd = Entry->End;
-
- //
- // If desc is past max allowed address, skip it
- //
- if (DescStart >= MaxAddress) {
- continue;
- }
-
- //
- // If desc ends past max allowed address, clip the end
- //
- if (DescEnd >= MaxAddress) {
- DescEnd = MaxAddress;
- }
-
- DescEnd = ((DescEnd + 1) & (~(Alignment - 1))) - 1;
-
- //
- // Compute the number of bytes we can used from this
- // descriptor, and see it's enough to satisfy the request
- //
- DescNumberOfBytes = DescEnd - DescStart + 1;
-
- if (DescNumberOfBytes >= NumberOfBytes) {
-
- //
- // If this is the best match so far remember it
- //
- if (DescEnd > Target) {
- Target = DescEnd;
- }
- }
- }
-
- //
- // If this is a grow down, adjust target to be the allocation base
- //
- Target -= NumberOfBytes - 1;
-
- //
- // If we didn't find a match, return 0
- //
- if ((Target & EFI_PAGE_MASK) != 0) {
- return 0;
- }
-
- return Target;
-}
-
-STATIC
-UINT64
-FindFreePages (
- IN UINT64 MaxAddress,
- IN UINT64 NoPages,
- IN EFI_MEMORY_TYPE NewType,
- IN UINTN Alignment
- )
-/*++
-
-Routine Description:
-
- Internal function. Finds a consecutive free page range below
- the requested address
-
-Arguments:
-
- MaxAddress - The address that the range must be below
-
- NoPages - Number of pages needed
-
- NewType - The type of memory the range is going to be turned into
-
- Alignment - Bits to align with
-
-Returns:
-
- The base address of the range, or 0 if the range was not found.
-
---*/
-{
- UINT64 NewMaxAddress;
- UINT64 Start;
-
- NewMaxAddress = MaxAddress;
-
- if (NewType >= 0 && NewType < EfiMaxMemoryType && NewMaxAddress >= mMemoryTypeStatistics[NewType].MaximumAddress) {
- NewMaxAddress = mMemoryTypeStatistics[NewType].MaximumAddress;
- } else {
- if (NewMaxAddress > mDefaultMaximumAddress) {
- NewMaxAddress = mDefaultMaximumAddress;
- }
- }
-
- Start = CoreFindFreePagesI (NewMaxAddress, NoPages, NewType, Alignment);
- if (!Start) {
- Start = CoreFindFreePagesI (MaxAddress, NoPages, NewType, Alignment);
- if (!Start) {
- //
- // Here means there may be no enough memory to use, so try to go through
- // all the memory descript to promote the untested memory directly
- //
- PromoteMemoryResource ();
-
- //
- // Allocate memory again after the memory resource re-arranged
- //
- Start = CoreFindFreePagesI (MaxAddress, NoPages, NewType, Alignment);
- }
- }
-
- return Start;
-}
-
-
-EFI_STATUS
-EFIAPI
-CoreAllocatePages (
- IN EFI_ALLOCATE_TYPE Type,
- IN EFI_MEMORY_TYPE MemoryType,
- IN UINTN NumberOfPages,
- IN OUT EFI_PHYSICAL_ADDRESS *Memory
- )
-/*++
-
-Routine Description:
-
- Allocates pages from the memory map.
-
-Arguments:
-
- Type - The type of allocation to perform
-
- MemoryType - The type of memory to turn the allocated pages into
-
- NumberOfPages - The number of pages to allocate
-
- Memory - A pointer to receive the base allocated memory address
-
-Returns:
-
- Status. On success, Memory is filled in with the base address allocated
-
- EFI_INVALID_PARAMETER - Parameters violate checking rules defined in spec.
-
- EFI_NOT_FOUND - Could not allocate pages match the requirement.
-
- EFI_OUT_OF_RESOURCES - No enough pages to allocate.
-
- EFI_SUCCESS - Pages successfully allocated.
-
---*/
-{
- EFI_STATUS Status;
- UINT64 Start;
- UINT64 MaxAddress;
- UINTN Alignment;
-
- if (Type < AllocateAnyPages || Type >= (UINTN) MaxAllocateType) {
- return EFI_INVALID_PARAMETER;
- }
-
- if ((MemoryType >= EfiMaxMemoryType && MemoryType <= 0x7fffffff) ||
- MemoryType == EfiConventionalMemory) {
- return EFI_INVALID_PARAMETER;
- }
-
- Alignment = EFI_DEFAULT_PAGE_ALLOCATION_ALIGNMENT;
-
- if (MemoryType == EfiACPIReclaimMemory ||
- MemoryType == EfiACPIMemoryNVS ||
- MemoryType == EfiRuntimeServicesCode ||
- MemoryType == EfiRuntimeServicesData) {
-
- Alignment = EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT;
- }
-
- if (Type == AllocateAddress) {
- if ((*Memory & (Alignment - 1)) != 0) {
- return EFI_NOT_FOUND;
- }
- }
-
- NumberOfPages += EFI_SIZE_TO_PAGES (Alignment) - 1;
- NumberOfPages &= ~(EFI_SIZE_TO_PAGES (Alignment) - 1);
-
- //
- // If this is for below a particular address, then
- //
- Start = *Memory;
-
- //
- // The max address is the max natively addressable address for the processor
- //
- MaxAddress = EFI_MAX_ADDRESS;
-
- if (Type == AllocateMaxAddress) {
- MaxAddress = Start;
- }
-
- CoreAcquireMemoryLock ();
-
- //
- // If not a specific address, then find an address to allocate
- //
- if (Type != AllocateAddress) {
- Start = FindFreePages (MaxAddress, NumberOfPages, MemoryType, Alignment);
- if (Start == 0) {
- Status = EFI_OUT_OF_RESOURCES;
- goto Done;
- }
- }
-
- //
- // Convert pages from FreeMemory to the requested type
- //
- Status = CoreConvertPages (Start, NumberOfPages, MemoryType);
-
-Done:
- CoreReleaseMemoryLock ();
-
- if (!EFI_ERROR (Status)) {
- *Memory = Start;
- }
-
- return Status;
-}
-
-
-
-
-EFI_STATUS
-EFIAPI
-CoreFreePages (
- IN EFI_PHYSICAL_ADDRESS Memory,
- IN UINTN NumberOfPages
- )
-/*++
-
-Routine Description:
-
- Frees previous allocated pages.
-
-Arguments:
-
- Memory - Base address of memory being freed
-
- NumberOfPages - The number of pages to free
-
-Returns:
-
- EFI_NOT_FOUND - Could not find the entry that covers the range
-
- EFI_INVALID_PARAMETER - Address not aligned
-
- EFI_SUCCESS -Pages successfully freed.
-
---*/
-{
- EFI_STATUS Status;
- LIST_ENTRY *Link;
- MEMORY_MAP *Entry;
- UINTN Alignment;
-
- //
- // Free the range
- //
- CoreAcquireMemoryLock ();
-
- //
- // Find the entry that the covers the range
- //
- Entry = NULL;
- for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {
- Entry = CR(Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
- if (Entry->Start <= Memory && Entry->End > Memory) {
- break;
- }
- }
- if (Link == &gMemoryMap) {
- CoreReleaseMemoryLock ();
- return EFI_NOT_FOUND;
- }
-
- Alignment = EFI_DEFAULT_PAGE_ALLOCATION_ALIGNMENT;
-
- if (Entry->Type == EfiACPIReclaimMemory ||
- Entry->Type == EfiACPIMemoryNVS ||
- Entry->Type == EfiRuntimeServicesCode ||
- Entry->Type == EfiRuntimeServicesData) {
-
- Alignment = EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT;
-
- }
-
- if ((Memory & (Alignment - 1)) != 0) {
- CoreReleaseMemoryLock ();
- return EFI_INVALID_PARAMETER;
- }
-
- NumberOfPages += EFI_SIZE_TO_PAGES (Alignment) - 1;
- NumberOfPages &= ~(EFI_SIZE_TO_PAGES (Alignment) - 1);
-
- Status = CoreConvertPages (Memory, NumberOfPages, EfiConventionalMemory);
-
- CoreReleaseMemoryLock ();
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Destroy the contents
- //
- if (Memory < EFI_MAX_ADDRESS) {
- DEBUG_CLEAR_MEMORY ((VOID *)(UINTN)Memory, NumberOfPages << EFI_PAGE_SHIFT);
- }
-
- return Status;
-}
-
-
-
-EFI_STATUS
-EFIAPI
-CoreGetMemoryMap (
- IN OUT UINTN *MemoryMapSize,
- IN OUT EFI_MEMORY_DESCRIPTOR *MemoryMap,
- OUT UINTN *MapKey,
- OUT UINTN *DescriptorSize,
- OUT UINT32 *DescriptorVersion
- )
-/*++
-
-Routine Description:
-
- This function returns a copy of the current memory map. The map is an array of
- memory descriptors, each of which describes a contiguous block of memory.
-
-Arguments:
-
- MemoryMapSize - A pointer to the size, in bytes, of the MemoryMap buffer. On
- input, this is the size of the buffer allocated by the caller.
- On output, it is the size of the buffer returned by the firmware
- if the buffer was large enough, or the size of the buffer needed
- to contain the map if the buffer was too small.
- MemoryMap - A pointer to the buffer in which firmware places the current memory map.
- MapKey - A pointer to the location in which firmware returns the key for the
- current memory map.
- DescriptorSize - A pointer to the location in which firmware returns the size, in
- bytes, of an individual EFI_MEMORY_DESCRIPTOR.
- DescriptorVersion - A pointer to the location in which firmware returns the version
- number associated with the EFI_MEMORY_DESCRIPTOR.
-
-Returns:
-
- EFI_SUCCESS - The memory map was returned in the MemoryMap buffer.
- EFI_BUFFER_TOO_SMALL - The MemoryMap buffer was too small. The current buffer size
- needed to hold the memory map is returned in MemoryMapSize.
- EFI_INVALID_PARAMETER - One of the parameters has an invalid value.
-
---*/
-{
- EFI_STATUS Status;
- UINTN Size;
- UINTN BufferSize;
- UINTN NumberOfRuntimeEntries;
- LIST_ENTRY *Link;
- MEMORY_MAP *Entry;
- EFI_GCD_MAP_ENTRY *GcdMapEntry;
-
- //
- // Make sure the parameters are valid
- //
- if (MemoryMapSize == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- CoreAcquireGcdMemoryLock ();
-
- //
- // Count the number of Reserved and MMIO entries that are marked for runtime use
- //
- NumberOfRuntimeEntries = 0;
- for (Link = mGcdMemorySpaceMap.ForwardLink; Link != &mGcdMemorySpaceMap; Link = Link->ForwardLink) {
- GcdMapEntry = CR (Link, EFI_GCD_MAP_ENTRY, Link, EFI_GCD_MAP_SIGNATURE);
- if ((GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeReserved) ||
- (GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeMemoryMappedIo)) {
- if ((GcdMapEntry->Attributes & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) {
- NumberOfRuntimeEntries++;
- }
- }
- }
-
- Size = sizeof (EFI_MEMORY_DESCRIPTOR);
-
- //
- // Make sure Size != sizeof(EFI_MEMORY_DESCRIPTOR). This will
- // prevent people from having pointer math bugs in their code.
- // now you have to use *DescriptorSize to make things work.
- //
- Size += sizeof(UINT64) - (Size % sizeof (UINT64));
-
- if (DescriptorSize != NULL) {
- *DescriptorSize = Size;
- }
-
- if (DescriptorVersion != NULL) {
- *DescriptorVersion = EFI_MEMORY_DESCRIPTOR_VERSION;
- }
-
- CoreAcquireMemoryLock ();
-
- //
- // Compute the buffer size needed to fit the entire map
- //
- BufferSize = Size * NumberOfRuntimeEntries;
- for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {
- BufferSize += Size;
- }
-
- if (*MemoryMapSize < BufferSize) {
- Status = EFI_BUFFER_TOO_SMALL;
- goto Done;
- }
-
- if (MemoryMap == NULL) {
- Status = EFI_INVALID_PARAMETER;
- goto Done;
- }
-
- //
- // Build the map
- //
- ZeroMem (MemoryMap, Size);
- for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {
- Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
- ASSERT (Entry->VirtualStart == 0);
-
- MemoryMap->Type = Entry->Type;
- MemoryMap->PhysicalStart = Entry->Start;
- MemoryMap->VirtualStart = Entry->VirtualStart;
- MemoryMap->NumberOfPages = RShiftU64 (Entry->End - Entry->Start + 1, EFI_PAGE_SHIFT);
-
- switch (Entry->Type) {
- case EfiRuntimeServicesCode:
- case EfiRuntimeServicesData:
- case EfiPalCode:
- MemoryMap->Attribute = Entry->Attribute | EFI_MEMORY_RUNTIME;
- break;
-
- default:
- MemoryMap->Attribute = Entry->Attribute;
- break;
- }
-
- MemoryMap = NextMemoryDescriptor (MemoryMap, Size);
- }
-
- for (Link = mGcdMemorySpaceMap.ForwardLink; Link != &mGcdMemorySpaceMap; Link = Link->ForwardLink) {
- GcdMapEntry = CR (Link, EFI_GCD_MAP_ENTRY, Link, EFI_GCD_MAP_SIGNATURE);
- if ((GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeReserved) ||
- (GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeMemoryMappedIo)) {
- if ((GcdMapEntry->Attributes & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) {
-
- MemoryMap->PhysicalStart = GcdMapEntry->BaseAddress;
- MemoryMap->VirtualStart = 0;
- MemoryMap->NumberOfPages = RShiftU64 ((GcdMapEntry->EndAddress - GcdMapEntry->BaseAddress + 1), EFI_PAGE_SHIFT);
- MemoryMap->Attribute = GcdMapEntry->Attributes & ~EFI_MEMORY_PORT_IO;
-
- if (GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeReserved) {
- MemoryMap->Type = EfiReservedMemoryType;
- } else if (GcdMapEntry->GcdMemoryType == EfiGcdMemoryTypeMemoryMappedIo) {
- if ((GcdMapEntry->Attributes & EFI_MEMORY_PORT_IO) == EFI_MEMORY_PORT_IO) {
- MemoryMap->Type = EfiMemoryMappedIOPortSpace;
- } else {
- MemoryMap->Type = EfiMemoryMappedIO;
- }
- }
-
- MemoryMap = NextMemoryDescriptor (MemoryMap, Size);
- }
- }
- }
-
- Status = EFI_SUCCESS;
-
-Done:
-
- CoreReleaseMemoryLock ();
-
- CoreReleaseGcdMemoryLock ();
-
- //
- // Update the map key finally
- //
- if (MapKey != NULL) {
- *MapKey = mMemoryMapKey;
- }
-
- *MemoryMapSize = BufferSize;
-
- return Status;
-}
-
-VOID *
-CoreAllocatePoolPages (
- IN EFI_MEMORY_TYPE PoolType,
- IN UINTN NumberOfPages,
- IN UINTN Alignment
- )
-/*++
-
-Routine Description:
-
- Internal function. Used by the pool functions to allocate pages
- to back pool allocation requests.
-
-Arguments:
-
- PoolType - The type of memory for the new pool pages
-
- NumberOfPages - No of pages to allocate
-
- Alignment - Bits to align.
-
-Returns:
-
- The allocated memory, or NULL
-
---*/
-{
- UINT64 Start;
-
- //
- // Find the pages to convert
- //
- Start = FindFreePages (EFI_MAX_ADDRESS, NumberOfPages, PoolType, Alignment);
-
- //
- // Convert it to boot services data
- //
- if (Start == 0) {
- DEBUG ((EFI_D_ERROR | EFI_D_PAGE, "AllocatePoolPages: failed to allocate %d pages\n", NumberOfPages));
- } else {
- CoreConvertPages (Start, NumberOfPages, PoolType);
- }
-
- return (VOID *)(UINTN)Start;
-}
-
-VOID
-CoreFreePoolPages (
- IN EFI_PHYSICAL_ADDRESS Memory,
- IN UINTN NumberOfPages
- )
-/*++
-
-Routine Description:
-
- Internal function. Frees pool pages allocated via AllocatePoolPages ()
-
-Arguments:
-
- Memory - The base address to free
-
- NumberOfPages - The number of pages to free
-
-Returns:
-
- None
-
---*/
-{
- CoreConvertPages (Memory, NumberOfPages, EfiConventionalMemory);
-}
-
-
-EFI_STATUS
-CoreTerminateMemoryMap (
- IN UINTN MapKey
- )
-/*++
-
-Routine Description:
-
- Make sure the memory map is following all the construction rules,
- it is the last time to check memory map error before exit boot services.
-
-Arguments:
-
- MapKey - Memory map key
-
-Returns:
-
- EFI_INVALID_PARAMETER - Memory map not consistent with construction rules.
-
- EFI_SUCCESS - Valid memory map.
-
---*/
-{
- EFI_STATUS Status;
- LIST_ENTRY *Link;
- MEMORY_MAP *Entry;
-
- Status = EFI_SUCCESS;
-
- CoreAcquireMemoryLock ();
-
- if (MapKey == mMemoryMapKey) {
-
- //
- // Make sure the memory map is following all the construction rules
- // This is the last chance we will be able to display any messages on
- // the console devices.
- //
-
- for (Link = gMemoryMap.ForwardLink; Link != &gMemoryMap; Link = Link->ForwardLink) {
- Entry = CR(Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
- if (Entry->Attribute & EFI_MEMORY_RUNTIME) {
- if (Entry->Type == EfiACPIReclaimMemory || Entry->Type == EfiACPIMemoryNVS) {
- DEBUG((EFI_D_ERROR, "ExitBootServices: ACPI memory entry has RUNTIME attribute set.\n"));
- CoreReleaseMemoryLock ();
- return EFI_INVALID_PARAMETER;
- }
- if (Entry->Start & (EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT - 1)) {
- DEBUG((EFI_D_ERROR, "ExitBootServices: A RUNTIME memory entry is not on a proper alignment.\n"));
- CoreReleaseMemoryLock ();
- return EFI_INVALID_PARAMETER;
- }
- if ((Entry->End + 1) & (EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT - 1)) {
- DEBUG((EFI_D_ERROR, "ExitBootServices: A RUNTIME memory entry is not on a proper alignment.\n"));
- CoreReleaseMemoryLock ();
- return EFI_INVALID_PARAMETER;
- }
- }
- }
-
- //
- // The map key they gave us matches what we expect. Fall through and
- // return success. In an ideal world we would clear out all of
- // EfiBootServicesCode and EfiBootServicesData. However this function
- // is not the last one called by ExitBootServices(), so we have to
- // preserve the memory contents.
- //
- } else {
- Status = EFI_INVALID_PARAMETER;
- }
-
- CoreReleaseMemoryLock ();
-
- return Status;
-}
-
-
-
-
-
-
-
-
|