We enhanced Paging support and record information in MemoryMap link list.
Most code is from DxeCore.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: "Yao, Jiewen" <jiewen....@intel.com>
Cc: "Zeng, Star" <star.z...@intel.com>
Cc: "Kinney, Michael D" <michael.d.kin...@intel.com>
Cc: "Fan, Jeff" <jeff....@intel.com>
---
MdeModulePkg/Core/PiSmmCore/Page.c | 740 ++++++++++++++++++++++++++++++++++++-
1 file changed, 730 insertions(+), 10 deletions(-)
diff --git a/MdeModulePkg/Core/PiSmmCore/Page.c
b/MdeModulePkg/Core/PiSmmCore/Page.c
index 9cc2a4c..c5e094d 100644
--- a/MdeModulePkg/Core/PiSmmCore/Page.c
+++ b/MdeModulePkg/Core/PiSmmCore/Page.c
@@ -1,7 +1,7 @@
/** @file
SMM Memory page management functions.
- Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>
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
@@ -13,11 +13,564 @@
**/
#include "PiSmmCore.h"
+#include <Library/SmmServicesTableLib.h>
#define TRUNCATE_TO_PAGES(a) ((a) >> EFI_PAGE_SHIFT)
LIST_ENTRY mSmmMemoryMap = INITIALIZE_LIST_HEAD_VARIABLE (mSmmMemoryMap);
+//
+// For GetMemoryMap()
+//
+
+#define MEMORY_MAP_SIGNATURE SIGNATURE_32('m','m','a','p')
+typedef struct {
+ UINTN Signature;
+ LIST_ENTRY Link;
+
+ BOOLEAN FromStack;
+ EFI_MEMORY_TYPE Type;
+ UINT64 Start;
+ UINT64 End;
+
+} MEMORY_MAP;
+
+LIST_ENTRY gMemoryMap = INITIALIZE_LIST_HEAD_VARIABLE (gMemoryMap);
+
+
+#define MAX_MAP_DEPTH 6
+
+///
+/// mMapDepth - depth of new descriptor stack
+///
+UINTN mMapDepth = 0;
+///
+/// mMapStack - space to use as temp storage to build new map descriptors
+///
+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);
+
+/**
+ Allocates pages from the memory map.
+
+ @param Type The type of allocation to perform.
+ @param MemoryType The type of memory to turn the allocated pages
+ into.
+ @param NumberOfPages The number of pages to allocate.
+ @param Memory A pointer to receive the base allocated memory
+ address.
+ @param AddRegion If this memory is new added region.
+
+ @retval EFI_INVALID_PARAMETER Parameters violate checking rules defined in
spec.
+ @retval EFI_NOT_FOUND Could not allocate pages match the
requirement.
+ @retval EFI_OUT_OF_RESOURCES No enough pages to allocate.
+ @retval EFI_SUCCESS Pages successfully allocated.
+
+**/
+EFI_STATUS
+SmmInternalAllocatePagesEx (
+ IN EFI_ALLOCATE_TYPE Type,
+ IN EFI_MEMORY_TYPE MemoryType,
+ IN UINTN NumberOfPages,
+ OUT EFI_PHYSICAL_ADDRESS *Memory,
+ IN BOOLEAN AddRegion
+ );
+
+/**
+ 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.
+
+ @return The Memory map descriptor dequed from the mFreeMemoryMapEntryList
+
+**/
+MEMORY_MAP *
+AllocateMemoryMapEntry (
+ VOID
+ )
+{
+ EFI_PHYSICAL_ADDRESS Mem;
+ EFI_STATUS Status;
+ MEMORY_MAP* FreeDescriptorEntries;
+ MEMORY_MAP* Entry;
+ UINTN Index;
+
+ if (IsListEmpty (&mFreeMemoryMapEntryList)) {
+ //
+ // The list is empty, to allocate one page to refuel the list
+ //
+ Status = SmmInternalAllocatePagesEx (
+ AllocateAnyPages,
+ EfiRuntimeServicesData,
+ EFI_SIZE_TO_PAGES(DEFAULT_PAGE_ALLOCATION),
+ &Mem,
+ TRUE
+ );
+ ASSERT_EFI_ERROR (Status);
+ if(!EFI_ERROR (Status)) {
+ FreeDescriptorEntries = (MEMORY_MAP *)(UINTN)Mem;
+ //
+ // 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;
+}
+
+
+/**
+ Internal function. Moves any memory descriptors that are on the
+ temporary descriptor stack to heap.
+
+**/
+VOID
+CoreFreeMemoryMapStack (
+ VOID
+ )
+{
+ MEMORY_MAP *Entry;
+
+ //
+ // If already freeing the map stack, then return
+ //
+ if (mFreeMapStack != 0) {
+ ASSERT (FALSE);
+ return ;
+ }
+
+ //
+ // Move the temporary memory descriptor stack into pool
+ //
+ mFreeMapStack += 1;
+
+ while (mMapDepth != 0) {
+ //
+ // Deque an memory map entry from mFreeMemoryMapEntryList
+ //
+ Entry = AllocateMemoryMapEntry ();
+ ASSERT (Entry);
+
+ //
+ // Update to proper entry
+ //
+ mMapDepth -= 1;
+
+ if (mMapStack[mMapDepth].Link.ForwardLink != NULL) {
+
+ CopyMem (Entry , &mMapStack[mMapDepth], sizeof (MEMORY_MAP));
+ Entry->FromStack = FALSE;
+
+ //
+ // Move this entry to general memory
+ //
+ InsertTailList (&mMapStack[mMapDepth].Link, &Entry->Link);
+ RemoveEntryList (&mMapStack[mMapDepth].Link);
+ mMapStack[mMapDepth].Link.ForwardLink = NULL;
+ }
+ }
+
+ mFreeMapStack -= 1;
+}
+
+/**
+ Insert new entry from memory map.
+
+ @param Link The old memory map entry to be linked.
+ @param Start The start address of new memory map entry.
+ @param End The end address of new memory map entry.
+ @param Type The type of new memory map entry.
+ @param Next If new entry is inserted to the next of old entry.
+ @param AddRegion If this memory is new added region.
+**/
+VOID
+InsertNewEntry (
+ IN LIST_ENTRY *Link,
+ IN UINT64 Start,
+ IN UINT64 End,
+ IN EFI_MEMORY_TYPE Type,
+ IN BOOLEAN Next,
+ IN BOOLEAN AddRegion
+ )
+{
+ MEMORY_MAP *Entry;
+
+ if (AddRegion) {
+ Entry = &mMapStack[mMapDepth];
+ mMapDepth += 1;
+ ASSERT (mMapDepth < MAX_MAP_DEPTH);
+ Entry->FromStack = TRUE;
+ } else {
+ Entry = AllocateMemoryMapEntry ();
+ ASSERT (Entry != NULL);
+ Entry->FromStack = FALSE;
+ }
+ Entry->Signature = MEMORY_MAP_SIGNATURE;
+ Entry->Type = Type;
+ Entry->Start = Start;
+ Entry->End = End;
+ if (Next) {
+ InsertHeadList (Link, &Entry->Link);
+ } else {
+ InsertTailList (Link, &Entry->Link);
+ }
+}
+
+/**
+ Remove old entry from memory map.
+
+ @param Entry Memory map entry to be removed.
+**/
+VOID
+RemoveOldEntry (
+ IN MEMORY_MAP *Entry
+ )
+{
+ RemoveEntryList (&Entry->Link);
+ if (!Entry->FromStack) {
+ InsertTailList (&mFreeMemoryMapEntryList, &Entry->Link);
+ }
+}
+
+/**
+ Update SMM memory map entry.
+
+ @param Type The type of allocation to perform.
+ @param Memory The base of memory address.
+ @param NumberOfPages The number of pages to allocate.
+ @param AddRegion If this memory is new added region.
+**/
+VOID
+ConvertSmmMemoryMapEntry (
+ IN EFI_MEMORY_TYPE Type,
+ IN EFI_PHYSICAL_ADDRESS Memory,
+ IN UINTN NumberOfPages,
+ IN BOOLEAN AddRegion
+ )
+{
+ LIST_ENTRY *Link;
+ MEMORY_MAP *Entry;
+ MEMORY_MAP *NextEntry;
+ LIST_ENTRY *NextLink;
+ MEMORY_MAP *PreviousEntry;
+ LIST_ENTRY *PreviousLink;
+ EFI_PHYSICAL_ADDRESS Start;
+ EFI_PHYSICAL_ADDRESS End;
+
+ Start = Memory;
+ End = Memory + EFI_PAGES_TO_SIZE(NumberOfPages) - 1;
+
+ //
+ // Exclude memory region
+ //
+ Link = gMemoryMap.ForwardLink;
+ while (Link != &gMemoryMap) {
+ Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
+ Link = Link->ForwardLink;
+
+ //
+ // ---------------------------------------------------
+ // | +----------+ +------+ +------+ +------+ |
+ // ---|gMemoryMep|---|Entry1|---|Entry2|---|Entry3|---
+ // +----------+ ^ +------+ +------+ +------+
+ // |
+ // +------+
+ // |EntryX|
+ // +------+
+ //
+ if (Entry->Start > End) {
+ if ((Entry->Start == End + 1) && (Entry->Type == Type)) {
+ Entry->Start = Start;
+ return ;
+ }
+ InsertNewEntry (
+ &Entry->Link,
+ Start,
+ End,
+ Type,
+ FALSE,
+ AddRegion
+ );
+ return ;
+ }
+
+ if ((Entry->Start <= Start) && (Entry->End >= End)) {
+ if (Entry->Type != Type) {
+ if (Entry->Start < Start) {
+ //
+ // ---------------------------------------------------
+ // | +----------+ +------+ +------+ +------+ |
+ // ---|gMemoryMep|---|Entry1|---|EntryX|---|Entry3|---
+ // +----------+ +------+ ^ +------+ +------+
+ // |
+ // +------+
+ // |EntryA|
+ // +------+
+ //
+ InsertNewEntry (
+ &Entry->Link,
+ Entry->Start,
+ Start - 1,
+ Entry->Type,
+ FALSE,
+ AddRegion
+ );
+ }
+ if (Entry->End > End) {
+ //
+ // ---------------------------------------------------
+ // | +----------+ +------+ +------+ +------+ |
+ // ---|gMemoryMep|---|Entry1|---|EntryX|---|Entry3|---
+ // +----------+ +------+ +------+ ^ +------+
+ // |
+ // +------+
+ // |EntryZ|
+ // +------+
+ //
+ InsertNewEntry (
+ &Entry->Link,
+ End + 1,
+ Entry->End,
+ Entry->Type,
+ TRUE,
+ AddRegion
+ );
+ }
+ //
+ // Update this node
+ //
+ Entry->Start = Start;
+ Entry->End = End;
+ Entry->Type = Type;
+
+ //
+ // Check adjacent
+ //
+ NextLink = Entry->Link.ForwardLink;
+ if (NextLink != &gMemoryMap) {
+ NextEntry = CR (NextLink, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
+ //
+ // ---------------------------------------------------
+ // | +----------+ +------+ +-----------------+ |
+ // ---|gMemoryMep|---|Entry1|---|EntryX Entry3|---
+ // +----------+ +------+ +-----------------+
+ //
+ if ((Entry->Type == NextEntry->Type) && (Entry->End + 1 ==
NextEntry->Start)) {
+ Entry->End = NextEntry->End;
+ RemoveOldEntry (NextEntry);
+ }
+ }
+ PreviousLink = Entry->Link.BackLink;
+ if (PreviousLink != &gMemoryMap) {
+ PreviousEntry = CR (PreviousLink, MEMORY_MAP, Link,
MEMORY_MAP_SIGNATURE);
+ //
+ // ---------------------------------------------------
+ // | +----------+ +-----------------+ +------+ |
+ // ---|gMemoryMep|---|Entry1 EntryX|---|Entry3|---
+ // +----------+ +-----------------+ +------+
+ //
+ if ((PreviousEntry->Type == Entry->Type) && (PreviousEntry->End + 1
== Entry->Start)) {
+ PreviousEntry->End = Entry->End;
+ RemoveOldEntry (Entry);
+ }
+ }
+ }
+ return ;
+ }
+ }
+
+ //
+ // ---------------------------------------------------
+ // | +----------+ +------+ +------+ +------+ |
+ // ---|gMemoryMep|---|Entry1|---|Entry2|---|Entry3|---
+ // +----------+ +------+ +------+ +------+ ^
+ // |
+ // +------+
+ // |EntryX|
+ // +------+
+ //
+ Link = gMemoryMap.BackLink;
+ if (Link != &gMemoryMap) {
+ Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
+ if ((Entry->End + 1 == Start) && (Entry->Type == Type)) {
+ Entry->End = End;
+ return ;
+ }
+ }
+ InsertNewEntry (
+ &gMemoryMap,
+ Start,
+ End,
+ Type,
+ FALSE,
+ AddRegion
+ );
+ return ;
+}
+
+/**
+ Return the count of Smm memory map entry.
+
+ @return The count of Smm memory map entry.
+**/
+UINTN
+GetSmmMemoryMapEntryCount (
+ VOID
+ )
+{
+ LIST_ENTRY *Link;
+ MEMORY_MAP *Entry;
+ UINTN Count;
+
+ Count = 0;
+ Link = gMemoryMap.ForwardLink;
+ while (Link != &gMemoryMap) {
+ Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
+ Link = Link->ForwardLink;
+ Count++;
+ }
+ return Count;
+}
+
+/**
+ Dump Smm memory map entry.
+**/
+VOID
+DumpSmmMemoryMapEntry (
+ VOID
+ )
+{
+ LIST_ENTRY *Link;
+ MEMORY_MAP *Entry;
+ EFI_PHYSICAL_ADDRESS Last;
+
+ Last = 0;
+ DEBUG ((EFI_D_INFO, "DumpSmmMemoryMapEntry:\n"));
+ Link = gMemoryMap.ForwardLink;
+ while (Link != &gMemoryMap) {
+ Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
+ Link = Link->ForwardLink;
+
+ if ((Last != 0) && (Last != (UINT64)-1)) {
+ if (Last + 1 != Entry->Start) {
+ Last = (UINT64)-1;
+ } else {
+ Last = Entry->End;
+ }
+ } else if (Last == 0) {
+ Last = Entry->End;
+ }
+
+ DEBUG ((EFI_D_INFO, "Entry (Link - 0x%x)\n", &Entry->Link));
+ DEBUG ((EFI_D_INFO, " Signature - 0x%x\n", Entry->Signature));
+ DEBUG ((EFI_D_INFO, " Link.ForwardLink - 0x%x\n",
Entry->Link.ForwardLink));
+ DEBUG ((EFI_D_INFO, " Link.BackLink - 0x%x\n", Entry->Link.BackLink));
+ DEBUG ((EFI_D_INFO, " Type - 0x%x\n", Entry->Type));
+ DEBUG ((EFI_D_INFO, " Start - 0x%016lx\n", Entry->Start));
+ DEBUG ((EFI_D_INFO, " End - 0x%016lx\n", Entry->End));
+ }
+
+ ASSERT (Last != (UINT64)-1);
+}
+
+/**
+ Dump Smm memory map.
+**/
+VOID
+DumpSmmMemoryMap (
+ VOID
+ )
+{
+ LIST_ENTRY *Node;
+ FREE_PAGE_LIST *Pages;
+
+ DEBUG ((EFI_D_INFO, "DumpSmmMemoryMap\n"));
+
+ Pages = NULL;
+ Node = mSmmMemoryMap.ForwardLink;
+ while (Node != &mSmmMemoryMap) {
+ Pages = BASE_CR (Node, FREE_PAGE_LIST, Link);
+ DEBUG ((EFI_D_INFO, "Pages - 0x%x\n", Pages));
+ DEBUG ((EFI_D_INFO, "Pages->NumberOfPages - 0x%x\n",
Pages->NumberOfPages));
+ Node = Node->ForwardLink;
+ }
+}
+
+/**
+ Check if a Smm base~length is in Smm memory map.
+
+ @param Base The base address of Smm memory to be checked.
+ @param Length THe length of Smm memory to be checked.
+
+ @retval TRUE Smm base~length is in smm memory map.
+ @retval FALSE Smm base~length is in smm memory map.
+**/
+BOOLEAN
+SmmMemoryMapConsistencyCheckRange (
+ IN EFI_PHYSICAL_ADDRESS Base,
+ IN UINTN Length
+ )
+{
+ LIST_ENTRY *Link;
+ MEMORY_MAP *Entry;
+ BOOLEAN Result;
+
+ Result = FALSE;
+ Link = gMemoryMap.ForwardLink;
+ while (Link != &gMemoryMap) {
+ Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
+ Link = Link->ForwardLink;
+
+ if (Entry->Type != EfiConventionalMemory) {
+ continue;
+ }
+ if (Entry->Start == Base && Entry->End == Base + Length - 1) {
+ Result = TRUE;
+ break;
+ }
+ }
+
+ return Result;
+}
+
+/**
+ Check the consistency of Smm memory map.
+**/
+VOID
+SmmMemoryMapConsistencyCheck (
+ VOID
+ )
+{
+ LIST_ENTRY *Node;
+ FREE_PAGE_LIST *Pages;
+ BOOLEAN Result;
+
+ Pages = NULL;
+ Node = mSmmMemoryMap.ForwardLink;
+ while (Node != &mSmmMemoryMap) {
+ Pages = BASE_CR (Node, FREE_PAGE_LIST, Link);
+ Result = SmmMemoryMapConsistencyCheckRange
((EFI_PHYSICAL_ADDRESS)(UINTN)Pages,
(UINTN)EFI_PAGES_TO_SIZE(Pages->NumberOfPages));
+ ASSERT (Result);
+ Node = Node->ForwardLink;
+ }
+}
+
/**
Internal Function. Allocate n pages from given free page node.
@@ -137,6 +690,7 @@ InternalAllocAddress (
@param NumberOfPages The number of pages to allocate.
@param Memory A pointer to receive the base allocated memory
address.
+ @param AddRegion If this memory is new added region.
@retval EFI_INVALID_PARAMETER Parameters violate checking rules defined in
spec.
@retval EFI_NOT_FOUND Could not allocate pages match the
requirement.
@@ -145,12 +699,12 @@ InternalAllocAddress (
**/
EFI_STATUS
-EFIAPI
-SmmInternalAllocatePages (
+SmmInternalAllocatePagesEx (
IN EFI_ALLOCATE_TYPE Type,
IN EFI_MEMORY_TYPE MemoryType,
IN UINTN NumberOfPages,
- OUT EFI_PHYSICAL_ADDRESS *Memory
+ OUT EFI_PHYSICAL_ADDRESS *Memory,
+ IN BOOLEAN AddRegion
)
{
UINTN RequestedAddress;
@@ -194,6 +748,12 @@ SmmInternalAllocatePages (
default:
return EFI_INVALID_PARAMETER;
}
+
+ //
+ // Update SmmMemoryMap here.
+ //
+ ConvertSmmMemoryMapEntry (MemoryType, *Memory, NumberOfPages, AddRegion);
+
return EFI_SUCCESS;
}
@@ -215,6 +775,34 @@ SmmInternalAllocatePages (
**/
EFI_STATUS
EFIAPI
+SmmInternalAllocatePages (
+ IN EFI_ALLOCATE_TYPE Type,
+ IN EFI_MEMORY_TYPE MemoryType,
+ IN UINTN NumberOfPages,
+ OUT EFI_PHYSICAL_ADDRESS *Memory
+ )
+{
+ return SmmInternalAllocatePagesEx (Type, MemoryType, NumberOfPages, Memory,
FALSE);
+}
+
+/**
+ Allocates pages from the memory map.
+
+ @param Type The type of allocation to perform.
+ @param MemoryType The type of memory to turn the allocated pages
+ into.
+ @param NumberOfPages The number of pages to allocate.
+ @param Memory A pointer to receive the base allocated memory
+ address.
+
+ @retval EFI_INVALID_PARAMETER Parameters violate checking rules defined in
spec.
+ @retval EFI_NOT_FOUND Could not allocate pages match the
requirement.
+ @retval EFI_OUT_OF_RESOURCES No enough pages to allocate.
+ @retval EFI_SUCCESS Pages successfully allocated.
+
+**/
+EFI_STATUS
+EFIAPI
SmmAllocatePages (
IN EFI_ALLOCATE_TYPE Type,
IN EFI_MEMORY_TYPE MemoryType,
@@ -263,6 +851,7 @@ InternalMergeNodes (
@param Memory Base address of memory being freed.
@param NumberOfPages The number of pages to free.
+ @param AddRegion If this memory is new added region.
@retval EFI_NOT_FOUND Could not find the entry that covers the
range.
@retval EFI_INVALID_PARAMETER Address not aligned.
@@ -270,10 +859,10 @@ InternalMergeNodes (
**/
EFI_STATUS
-EFIAPI
-SmmInternalFreePages (
+SmmInternalFreePagesEx (
IN EFI_PHYSICAL_ADDRESS Memory,
- IN UINTN NumberOfPages
+ IN UINTN NumberOfPages,
+ IN BOOLEAN AddRegion
)
{
LIST_ENTRY *Node;
@@ -318,6 +907,11 @@ SmmInternalFreePages (
if (Node != &mSmmMemoryMap) {
InternalMergeNodes (Pages);
}
+
+ //
+ // Update SmmMemoryMap here.
+ //
+ ConvertSmmMemoryMapEntry (EfiConventionalMemory, Memory, NumberOfPages,
AddRegion);
return EFI_SUCCESS;
}
@@ -335,6 +929,27 @@ SmmInternalFreePages (
**/
EFI_STATUS
EFIAPI
+SmmInternalFreePages (
+ IN EFI_PHYSICAL_ADDRESS Memory,
+ IN UINTN NumberOfPages
+ )
+{
+ return SmmInternalFreePagesEx (Memory, NumberOfPages, FALSE);
+}
+
+/**
+ Frees previous allocated pages.
+
+ @param Memory Base address of memory being freed.
+ @param NumberOfPages The number of pages to free.
+
+ @retval EFI_NOT_FOUND Could not find the entry that covers the
range.
+ @retval EFI_INVALID_PARAMETER Address not aligned.
+ @return EFI_SUCCESS Pages successfully freed.
+
+**/
+EFI_STATUS
+EFIAPI
SmmFreePages (
IN EFI_PHYSICAL_ADDRESS Memory,
IN UINTN NumberOfPages
@@ -369,16 +984,121 @@ SmmAddMemoryRegion (
UINTN AlignedMemBase;
//
- // Do not add memory regions that is already allocated, needs testing, or
needs ECC initialization
+ // Add EfiRuntimeServicesData for memory regions that is already allocated,
needs testing, or needs ECC initialization
//
if ((Attributes & (EFI_ALLOCATED | EFI_NEEDS_TESTING |
EFI_NEEDS_ECC_INITIALIZATION)) != 0) {
- return;
+ Type = EfiRuntimeServicesData;
+ } else {
+ Type = EfiConventionalMemory;
}
+ DEBUG ((EFI_D_INFO, "SmmAddMemoryRegion\n"));
+ DEBUG ((EFI_D_INFO, " MemBase - 0x%lx\n", MemBase));
+ DEBUG ((EFI_D_INFO, " MemLength - 0x%lx\n", MemLength));
+ DEBUG ((EFI_D_INFO, " Type - 0x%x\n", Type));
+ DEBUG ((EFI_D_INFO, " Attributes - 0x%lx\n", Attributes));
+
//
// Align range on an EFI_PAGE_SIZE boundary
//
AlignedMemBase = (UINTN)(MemBase + EFI_PAGE_MASK) & ~EFI_PAGE_MASK;
MemLength -= AlignedMemBase - MemBase;
- SmmFreePages (AlignedMemBase, TRUNCATE_TO_PAGES ((UINTN)MemLength));
+ if (Type == EfiConventionalMemory) {
+ SmmInternalFreePagesEx (AlignedMemBase, TRUNCATE_TO_PAGES
((UINTN)MemLength), TRUE);
+ } else {
+ ConvertSmmMemoryMapEntry (EfiRuntimeServicesData, AlignedMemBase,
TRUNCATE_TO_PAGES ((UINTN)MemLength), TRUE);
+ }
+
+ CoreFreeMemoryMapStack ();
+}
+
+/**
+ 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.
+
+ @param 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.
+ @param MemoryMap A pointer to the buffer in which firmware
places
+ the current memory map.
+ @param MapKey A pointer to the location in which firmware
+ returns the key for the current memory map.
+ @param DescriptorSize A pointer to the location in which firmware
+ returns the size, in bytes, of an individual
+ EFI_MEMORY_DESCRIPTOR.
+ @param DescriptorVersion A pointer to the location in which firmware
+ returns the version number associated with the
+ EFI_MEMORY_DESCRIPTOR.
+
+ @retval EFI_SUCCESS The memory map was returned in the MemoryMap
+ buffer.
+ @retval EFI_BUFFER_TOO_SMALL The MemoryMap buffer was too small. The
current
+ buffer size needed to hold the memory map is
+ returned in MemoryMapSize.
+ @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
+
+**/
+EFI_STATUS
+EFIAPI
+SmmCoreGetMemoryMap (
+ IN OUT UINTN *MemoryMapSize,
+ IN OUT EFI_MEMORY_DESCRIPTOR *MemoryMap,
+ OUT UINTN *MapKey,
+ OUT UINTN *DescriptorSize,
+ OUT UINT32 *DescriptorVersion
+ )
+{
+ UINTN Count;
+ LIST_ENTRY *Link;
+ MEMORY_MAP *Entry;
+ UINTN Size;
+ UINTN BufferSize;
+
+ 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;
+ }
+
+ Count = GetSmmMemoryMapEntryCount ();
+ BufferSize = Size * Count;
+ if (*MemoryMapSize < BufferSize) {
+ *MemoryMapSize = BufferSize;
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
+ *MemoryMapSize = BufferSize;
+ if (MemoryMap == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ ZeroMem (MemoryMap, BufferSize);
+ Link = gMemoryMap.ForwardLink;
+ while (Link != &gMemoryMap) {
+ Entry = CR (Link, MEMORY_MAP, Link, MEMORY_MAP_SIGNATURE);
+ Link = Link->ForwardLink;
+
+ MemoryMap->Type = Entry->Type;
+ MemoryMap->PhysicalStart = Entry->Start;
+ MemoryMap->NumberOfPages = RShiftU64 (Entry->End - Entry->Start + 1,
EFI_PAGE_SHIFT);
+
+ MemoryMap = NEXT_MEMORY_DESCRIPTOR (MemoryMap, Size);
+ }
+
+ return EFI_SUCCESS;
}
--
1.9.5.msysgit.0
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