diff options
Diffstat (limited to 'MdeModulePkg/Core/PiSmmCore/MemoryAttributesTable.c')
| -rw-r--r-- | MdeModulePkg/Core/PiSmmCore/MemoryAttributesTable.c | 1509 |
1 files changed, 1509 insertions, 0 deletions
diff --git a/MdeModulePkg/Core/PiSmmCore/MemoryAttributesTable.c b/MdeModulePkg/Core/PiSmmCore/MemoryAttributesTable.c new file mode 100644 index 0000000000..3a5a2c8743 --- /dev/null +++ b/MdeModulePkg/Core/PiSmmCore/MemoryAttributesTable.c @@ -0,0 +1,1509 @@ +/** @file
+ PI SMM MemoryAttributes support
+
+Copyright (c) 2016, 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
+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.
+
+**/
+
+#include <PiDxe.h>
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/SmmServicesTableLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PcdLib.h>
+
+#include <Library/PeCoffLib.h>
+#include <Library/PeCoffGetEntryPointLib.h>
+
+#include <Guid/PiSmmMemoryAttributesTable.h>
+
+#include "PiSmmCore.h"
+
+#define PREVIOUS_MEMORY_DESCRIPTOR(MemoryDescriptor, Size) \
+ ((EFI_MEMORY_DESCRIPTOR *)((UINT8 *)(MemoryDescriptor) - (Size)))
+
+#define IMAGE_PROPERTIES_RECORD_CODE_SECTION_SIGNATURE SIGNATURE_32 ('I','P','R','C')
+
+typedef struct {
+ UINT32 Signature;
+ LIST_ENTRY Link;
+ EFI_PHYSICAL_ADDRESS CodeSegmentBase;
+ UINT64 CodeSegmentSize;
+} IMAGE_PROPERTIES_RECORD_CODE_SECTION;
+
+#define IMAGE_PROPERTIES_RECORD_SIGNATURE SIGNATURE_32 ('I','P','R','D')
+
+typedef struct {
+ UINT32 Signature;
+ LIST_ENTRY Link;
+ EFI_PHYSICAL_ADDRESS ImageBase;
+ UINT64 ImageSize;
+ UINTN CodeSegmentCount;
+ LIST_ENTRY CodeSegmentList;
+} IMAGE_PROPERTIES_RECORD;
+
+#define IMAGE_PROPERTIES_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('I','P','P','D')
+
+typedef struct {
+ UINT32 Signature;
+ UINTN ImageRecordCount;
+ UINTN CodeSegmentCountMax;
+ LIST_ENTRY ImageRecordList;
+} IMAGE_PROPERTIES_PRIVATE_DATA;
+
+IMAGE_PROPERTIES_PRIVATE_DATA mImagePropertiesPrivateData = {
+ IMAGE_PROPERTIES_PRIVATE_DATA_SIGNATURE,
+ 0,
+ 0,
+ INITIALIZE_LIST_HEAD_VARIABLE (mImagePropertiesPrivateData.ImageRecordList)
+};
+
+#define EFI_MEMORY_ATTRIBUTES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA BIT0
+
+UINT64 mMemoryProtectionAttribute = EFI_MEMORY_ATTRIBUTES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA;
+
+//
+// Below functions are for MemoryMap
+//
+
+/**
+ Converts a number of EFI_PAGEs to a size in bytes.
+
+ NOTE: Do not use EFI_PAGES_TO_SIZE because it handles UINTN only.
+
+ @param[in] Pages The number of EFI_PAGES.
+
+ @return The number of bytes associated with the number of EFI_PAGEs specified
+ by Pages.
+**/
+STATIC
+UINT64
+EfiPagesToSize (
+ IN UINT64 Pages
+ )
+{
+ return LShiftU64 (Pages, EFI_PAGE_SHIFT);
+}
+
+/**
+ Converts a size, in bytes, to a number of EFI_PAGESs.
+
+ NOTE: Do not use EFI_SIZE_TO_PAGES because it handles UINTN only.
+
+ @param[in] Size A size in bytes.
+
+ @return The number of EFI_PAGESs associated with the number of bytes specified
+ by Size.
+
+**/
+STATIC
+UINT64
+EfiSizeToPages (
+ IN UINT64 Size
+ )
+{
+ return RShiftU64 (Size, EFI_PAGE_SHIFT) + ((((UINTN)Size) & EFI_PAGE_MASK) ? 1 : 0);
+}
+
+/**
+ Check the consistency of Smm memory attributes table.
+
+ @param[in] MemoryAttributesTable PI SMM memory attributes table
+**/
+VOID
+SmmMemoryAttributesTableConsistencyCheck (
+ IN EDKII_PI_SMM_MEMORY_ATTRIBUTES_TABLE *MemoryAttributesTable
+ )
+{
+ EFI_MEMORY_DESCRIPTOR *MemoryMap;
+ UINTN MemoryMapEntryCount;
+ UINTN DescriptorSize;
+ UINTN Index;
+ UINT64 Address;
+
+ Address = 0;
+ MemoryMapEntryCount = MemoryAttributesTable->NumberOfEntries;
+ DescriptorSize = MemoryAttributesTable->DescriptorSize;
+ MemoryMap = (EFI_MEMORY_DESCRIPTOR *)(MemoryAttributesTable + 1);
+ for (Index = 0; Index < MemoryMapEntryCount; Index++) {
+ if (Address != 0) {
+ ASSERT (Address == MemoryMap->PhysicalStart);
+ }
+ Address = MemoryMap->PhysicalStart + EFI_PAGES_TO_SIZE(MemoryMap->NumberOfPages);
+ MemoryMap = NEXT_MEMORY_DESCRIPTOR(MemoryMap, DescriptorSize);
+ }
+}
+
+/**
+ Sort memory map entries based upon PhysicalStart, from low to high.
+
+ @param[in] MemoryMap A pointer to the buffer in which firmware places
+ the current memory map.
+ @param[in] MemoryMapSize Size, in bytes, of the MemoryMap buffer.
+ @param[in] DescriptorSize Size, in bytes, of an individual EFI_MEMORY_DESCRIPTOR.
+**/
+STATIC
+VOID
+SortMemoryMap (
+ IN OUT EFI_MEMORY_DESCRIPTOR *MemoryMap,
+ IN UINTN MemoryMapSize,
+ IN UINTN DescriptorSize
+ )
+{
+ EFI_MEMORY_DESCRIPTOR *MemoryMapEntry;
+ EFI_MEMORY_DESCRIPTOR *NextMemoryMapEntry;
+ EFI_MEMORY_DESCRIPTOR *MemoryMapEnd;
+ EFI_MEMORY_DESCRIPTOR TempMemoryMap;
+
+ MemoryMapEntry = MemoryMap;
+ NextMemoryMapEntry = NEXT_MEMORY_DESCRIPTOR (MemoryMapEntry, DescriptorSize);
+ MemoryMapEnd = (EFI_MEMORY_DESCRIPTOR *) ((UINT8 *) MemoryMap + MemoryMapSize);
+ while (MemoryMapEntry < MemoryMapEnd) {
+ while (NextMemoryMapEntry < MemoryMapEnd) {
+ if (MemoryMapEntry->PhysicalStart > NextMemoryMapEntry->PhysicalStart) {
+ CopyMem (&TempMemoryMap, MemoryMapEntry, sizeof(EFI_MEMORY_DESCRIPTOR));
+ CopyMem (MemoryMapEntry, NextMemoryMapEntry, sizeof(EFI_MEMORY_DESCRIPTOR));
+ CopyMem (NextMemoryMapEntry, &TempMemoryMap, sizeof(EFI_MEMORY_DESCRIPTOR));
+ }
+
+ NextMemoryMapEntry = NEXT_MEMORY_DESCRIPTOR (NextMemoryMapEntry, DescriptorSize);
+ }
+
+ MemoryMapEntry = NEXT_MEMORY_DESCRIPTOR (MemoryMapEntry, DescriptorSize);
+ NextMemoryMapEntry = NEXT_MEMORY_DESCRIPTOR (MemoryMapEntry, DescriptorSize);
+ }
+
+ return ;
+}
+
+/**
+ Merge continous memory map entries whose have same attributes.
+
+ @param[in, out] MemoryMap A pointer to the buffer in which firmware places
+ the current memory map.
+ @param[in, out] MemoryMapSize A pointer to the size, in bytes, of the
+ MemoryMap buffer. On input, this is the size of
+ the current memory map. On output,
+ it is the size of new memory map after merge.
+ @param[in] DescriptorSize Size, in bytes, of an individual EFI_MEMORY_DESCRIPTOR.
+**/
+STATIC
+VOID
+MergeMemoryMap (
+ IN OUT EFI_MEMORY_DESCRIPTOR *MemoryMap,
+ IN OUT UINTN *MemoryMapSize,
+ IN UINTN DescriptorSize
+ )
+{
+ EFI_MEMORY_DESCRIPTOR *MemoryMapEntry;
+ EFI_MEMORY_DESCRIPTOR *MemoryMapEnd;
+ UINT64 MemoryBlockLength;
+ EFI_MEMORY_DESCRIPTOR *NewMemoryMapEntry;
+ EFI_MEMORY_DESCRIPTOR *NextMemoryMapEntry;
+
+ MemoryMapEntry = MemoryMap;
+ NewMemoryMapEntry = MemoryMap;
+ MemoryMapEnd = (EFI_MEMORY_DESCRIPTOR *) ((UINT8 *) MemoryMap + *MemoryMapSize);
+ while ((UINTN)MemoryMapEntry < (UINTN)MemoryMapEnd) {
+ CopyMem (NewMemoryMapEntry, MemoryMapEntry, sizeof(EFI_MEMORY_DESCRIPTOR));
+ NextMemoryMapEntry = NEXT_MEMORY_DESCRIPTOR (MemoryMapEntry, DescriptorSize);
+
+ do {
+ MemoryBlockLength = (UINT64) (EfiPagesToSize (MemoryMapEntry->NumberOfPages));
+ if (((UINTN)NextMemoryMapEntry < (UINTN)MemoryMapEnd) &&
+ (MemoryMapEntry->Type == NextMemoryMapEntry->Type) &&
+ (MemoryMapEntry->Attribute == NextMemoryMapEntry->Attribute) &&
+ ((MemoryMapEntry->PhysicalStart + MemoryBlockLength) == NextMemoryMapEntry->PhysicalStart)) {
+ MemoryMapEntry->NumberOfPages += NextMemoryMapEntry->NumberOfPages;
+ if (NewMemoryMapEntry != MemoryMapEntry) {
+ NewMemoryMapEntry->NumberOfPages += NextMemoryMapEntry->NumberOfPages;
+ }
+
+ NextMemoryMapEntry = NEXT_MEMORY_DESCRIPTOR (NextMemoryMapEntry, DescriptorSize);
+ continue;
+ } else {
+ MemoryMapEntry = PREVIOUS_MEMORY_DESCRIPTOR (NextMemoryMapEntry, DescriptorSize);
+ break;
+ }
+ } while (TRUE);
+
+ MemoryMapEntry = NEXT_MEMORY_DESCRIPTOR (MemoryMapEntry, DescriptorSize);
+ NewMemoryMapEntry = NEXT_MEMORY_DESCRIPTOR (NewMemoryMapEntry, DescriptorSize);
+ }
+
+ *MemoryMapSize = (UINTN)NewMemoryMapEntry - (UINTN)MemoryMap;
+
+ return ;
+}
+
+/**
+ Enforce memory map attributes.
+ This function will set EfiRuntimeServicesData/EfiMemoryMappedIO/EfiMemoryMappedIOPortSpace to be EFI_MEMORY_XP.
+
+ @param[in, out] MemoryMap A pointer to the buffer in which firmware places
+ the current memory map.
+ @param[in] MemoryMapSize Size, in bytes, of the MemoryMap buffer.
+ @param[in] DescriptorSize Size, in bytes, of an individual EFI_MEMORY_DESCRIPTOR.
+**/
+STATIC
+VOID
+EnforceMemoryMapAttribute (
+ IN OUT EFI_MEMORY_DESCRIPTOR *MemoryMap,
+ IN UINTN MemoryMapSize,
+ IN UINTN DescriptorSize
+ )
+{
+ EFI_MEMORY_DESCRIPTOR *MemoryMapEntry;
+ EFI_MEMORY_DESCRIPTOR *MemoryMapEnd;
+
+ MemoryMapEntry = MemoryMap;
+ MemoryMapEnd = (EFI_MEMORY_DESCRIPTOR *) ((UINT8 *) MemoryMap + MemoryMapSize);
+ while ((UINTN)MemoryMapEntry < (UINTN)MemoryMapEnd) {
+ switch (MemoryMapEntry->Type) {
+ case EfiRuntimeServicesCode:
+ MemoryMapEntry->Attribute |= EFI_MEMORY_RO;
+ break;
+ case EfiRuntimeServicesData:
+ MemoryMapEntry->Attribute |= EFI_MEMORY_XP;
+ break;
+ }
+
+ MemoryMapEntry = NEXT_MEMORY_DESCRIPTOR (MemoryMapEntry, DescriptorSize);
+ }
+
+ return ;
+}
+
+/**
+ Return the first image record, whose [ImageBase, ImageSize] covered by [Buffer, Length].
+
+ @param[in] Buffer Start Address
+ @param[in] Length Address length
+
+ @return first image record covered by [buffer, length]
+**/
+STATIC
+IMAGE_PROPERTIES_RECORD *
+GetImageRecordByAddress (
+ IN EFI_PHYSICAL_ADDRESS Buffer,
+ IN UINT64 Length
+ )
+{
+ IMAGE_PROPERTIES_RECORD *ImageRecord;
+ LIST_ENTRY *ImageRecordLink;
+ LIST_ENTRY *ImageRecordList;
+
+ ImageRecordList = &mImagePropertiesPrivateData.ImageRecordList;
+
+ for (ImageRecordLink = ImageRecordList->ForwardLink;
+ ImageRecordLink != ImageRecordList;
+ ImageRecordLink = ImageRecordLink->ForwardLink) {
+ ImageRecord = CR (
+ ImageRecordLink,
+ IMAGE_PROPERTIES_RECORD,
+ Link,
+ IMAGE_PROPERTIES_RECORD_SIGNATURE
+ );
+
+ if ((Buffer <= ImageRecord->ImageBase) &&
+ (Buffer + Length >= ImageRecord->ImageBase + ImageRecord->ImageSize)) {
+ return ImageRecord;
+ }
+ }
+
+ return NULL;
+}
+
+/**
+ Set the memory map to new entries, according to one old entry,
+ based upon PE code section and data section in image record
+
+ @param[in] ImageRecord An image record whose [ImageBase, ImageSize] covered
+ by old memory map entry.
+ @param[in, out] NewRecord A pointer to several new memory map entries.
+ The caller gurantee the buffer size be 1 +
+ (SplitRecordCount * DescriptorSize) calculated
+ below.
+ @param[in] OldRecord A pointer to one old memory map entry.
+ @param[in] DescriptorSize Size, in bytes, of an individual EFI_MEMORY_DESCRIPTOR.
+**/
+STATIC
+UINTN
+SetNewRecord (
+ IN IMAGE_PROPERTIES_RECORD *ImageRecord,
+ IN OUT EFI_MEMORY_DESCRIPTOR *NewRecord,
+ IN EFI_MEMORY_DESCRIPTOR *OldRecord,
+ IN UINTN DescriptorSize
+ )
+{
+ EFI_MEMORY_DESCRIPTOR TempRecord;
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION *ImageRecordCodeSection;
+ LIST_ENTRY *ImageRecordCodeSectionLink;
+ LIST_ENTRY *ImageRecordCodeSectionEndLink;
+ LIST_ENTRY *ImageRecordCodeSectionList;
+ UINTN NewRecordCount;
+ UINT64 PhysicalEnd;
+ UINT64 ImageEnd;
+
+ CopyMem (&TempRecord, OldRecord, sizeof(EFI_MEMORY_DESCRIPTOR));
+ PhysicalEnd = TempRecord.PhysicalStart + EfiPagesToSize(TempRecord.NumberOfPages);
+ NewRecordCount = 0;
+
+ ImageRecordCodeSectionList = &ImageRecord->CodeSegmentList;
+
+ ImageRecordCodeSectionLink = ImageRecordCodeSectionList->ForwardLink;
+ ImageRecordCodeSectionEndLink = ImageRecordCodeSectionList;
+ while (ImageRecordCodeSectionLink != ImageRecordCodeSectionEndLink) {
+ ImageRecordCodeSection = CR (
+ ImageRecordCodeSectionLink,
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION,
+ Link,
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION_SIGNATURE
+ );
+ ImageRecordCodeSectionLink = ImageRecordCodeSectionLink->ForwardLink;
+
+ if (TempRecord.PhysicalStart <= ImageRecordCodeSection->CodeSegmentBase) {
+ //
+ // DATA
+ //
+ NewRecord->Type = EfiRuntimeServicesData;
+ NewRecord->PhysicalStart = TempRecord.PhysicalStart;
+ NewRecord->VirtualStart = 0;
+ NewRecord->NumberOfPages = EfiSizeToPages(ImageRecordCodeSection->CodeSegmentBase - NewRecord->PhysicalStart);
+ NewRecord->Attribute = TempRecord.Attribute | EFI_MEMORY_XP;
+ if (NewRecord->NumberOfPages != 0) {
+ NewRecord = NEXT_MEMORY_DESCRIPTOR (NewRecord, DescriptorSize);
+ NewRecordCount ++;
+ }
+
+ //
+ // CODE
+ //
+ NewRecord->Type = EfiRuntimeServicesCode;
+ NewRecord->PhysicalStart = ImageRecordCodeSection->CodeSegmentBase;
+ NewRecord->VirtualStart = 0;
+ NewRecord->NumberOfPages = EfiSizeToPages(ImageRecordCodeSection->CodeSegmentSize);
+ NewRecord->Attribute = (TempRecord.Attribute & (~EFI_MEMORY_XP)) | EFI_MEMORY_RO;
+ if (NewRecord->NumberOfPages != 0) {
+ NewRecord = NEXT_MEMORY_DESCRIPTOR (NewRecord, DescriptorSize);
+ NewRecordCount ++;
+ }
+
+ TempRecord.PhysicalStart = ImageRecordCodeSection->CodeSegmentBase + EfiPagesToSize (EfiSizeToPages(ImageRecordCodeSection->CodeSegmentSize));
+ TempRecord.NumberOfPages = EfiSizeToPages(PhysicalEnd - TempRecord.PhysicalStart);
+ if (TempRecord.NumberOfPages == 0) {
+ break;
+ }
+ }
+ }
+
+ ImageEnd = ImageRecord->ImageBase + ImageRecord->ImageSize;
+
+ //
+ // Final DATA
+ //
+ if (TempRecord.PhysicalStart < ImageEnd) {
+ NewRecord->Type = EfiRuntimeServicesData;
+ NewRecord->PhysicalStart = TempRecord.PhysicalStart;
+ NewRecord->VirtualStart = 0;
+ NewRecord->NumberOfPages = EfiSizeToPages (ImageEnd - TempRecord.PhysicalStart);
+ NewRecord->Attribute = TempRecord.Attribute | EFI_MEMORY_XP;
+ NewRecordCount ++;
+ }
+
+ return NewRecordCount;
+}
+
+/**
+ Return the max number of new splitted entries, according to one old entry,
+ based upon PE code section and data section.
+
+ @param[in] OldRecord A pointer to one old memory map entry.
+
+ @retval 0 no entry need to be splitted.
+ @return the max number of new splitted entries
+**/
+STATIC
+UINTN
+GetMaxSplitRecordCount (
+ IN EFI_MEMORY_DESCRIPTOR *OldRecord
+ )
+{
+ IMAGE_PROPERTIES_RECORD *ImageRecord;
+ UINTN SplitRecordCount;
+ UINT64 PhysicalStart;
+ UINT64 PhysicalEnd;
+
+ SplitRecordCount = 0;
+ PhysicalStart = OldRecord->PhysicalStart;
+ PhysicalEnd = OldRecord->PhysicalStart + EfiPagesToSize(OldRecord->NumberOfPages);
+
+ do {
+ ImageRecord = GetImageRecordByAddress (PhysicalStart, PhysicalEnd - PhysicalStart);
+ if (ImageRecord == NULL) {
+ break;
+ }
+ SplitRecordCount += (2 * ImageRecord->CodeSegmentCount + 1);
+ PhysicalStart = ImageRecord->ImageBase + ImageRecord->ImageSize;
+ } while ((ImageRecord != NULL) && (PhysicalStart < PhysicalEnd));
+
+ if (SplitRecordCount != 0) {
+ SplitRecordCount--;
+ }
+
+ return SplitRecordCount;
+}
+
+/**
+ Split the memory map to new entries, according to one old entry,
+ based upon PE code section and data section.
+
+ @param[in] OldRecord A pointer to one old memory map entry.
+ @param[in, out] NewRecord A pointer to several new memory map entries.
+ The caller gurantee the buffer size be 1 +
+ (SplitRecordCount * DescriptorSize) calculated
+ below.
+ @param[in] MaxSplitRecordCount The max number of splitted entries
+ @param[in] DescriptorSize Size, in bytes, of an individual EFI_MEMORY_DESCRIPTOR.
+
+ @retval 0 no entry is splitted.
+ @return the real number of splitted record.
+**/
+STATIC
+UINTN
+SplitRecord (
+ IN EFI_MEMORY_DESCRIPTOR *OldRecord,
+ IN OUT EFI_MEMORY_DESCRIPTOR *NewRecord,
+ IN UINTN MaxSplitRecordCount,
+ IN UINTN DescriptorSize
+ )
+{
+ EFI_MEMORY_DESCRIPTOR TempRecord;
+ IMAGE_PROPERTIES_RECORD *ImageRecord;
+ IMAGE_PROPERTIES_RECORD *NewImageRecord;
+ UINT64 PhysicalStart;
+ UINT64 PhysicalEnd;
+ UINTN NewRecordCount;
+ UINTN TotalNewRecordCount;
+
+ if (MaxSplitRecordCount == 0) {
+ CopyMem (NewRecord, OldRecord, DescriptorSize);
+ return 0;
+ }
+
+ TotalNewRecordCount = 0;
+
+ //
+ // Override previous record
+ //
+ CopyMem (&TempRecord, OldRecord, sizeof(EFI_MEMORY_DESCRIPTOR));
+ PhysicalStart = TempRecord.PhysicalStart;
+ PhysicalEnd = TempRecord.PhysicalStart + EfiPagesToSize(TempRecord.NumberOfPages);
+
+ ImageRecord = NULL;
+ do {
+ NewImageRecord = GetImageRecordByAddress (PhysicalStart, PhysicalEnd - PhysicalStart);
+ if (NewImageRecord == NULL) {
+ //
+ // No more image covered by this range, stop
+ //
+ if ((PhysicalEnd > PhysicalStart) && (ImageRecord != NULL)) {
+ //
+ // If this is still address in this record, need record.
+ //
+ NewRecord = PREVIOUS_MEMORY_DESCRIPTOR (NewRecord, DescriptorSize);
+ if (NewRecord->Type == EfiRuntimeServicesData) {
+ //
+ // Last record is DATA, just merge it.
+ //
+ NewRecord->NumberOfPages = EfiSizeToPages(PhysicalEnd - NewRecord->PhysicalStart);
+ } else {
+ //
+ // Last record is CODE, create a new DATA entry.
+ //
+ NewRecord = NEXT_MEMORY_DESCRIPTOR (NewRecord, DescriptorSize);
+ NewRecord->Type = EfiRuntimeServicesData;
+ NewRecord->PhysicalStart = TempRecord.PhysicalStart;
+ NewRecord->VirtualStart = 0;
+ NewRecord->NumberOfPages = TempRecord.NumberOfPages;
+ NewRecord->Attribute = TempRecord.Attribute | EFI_MEMORY_XP;
+ TotalNewRecordCount ++;
+ }
+ }
+ break;
+ }
+ ImageRecord = NewImageRecord;
+
+ //
+ // Set new record
+ //
+ NewRecordCount = SetNewRecord (ImageRecord, NewRecord, &TempRecord, DescriptorSize);
+ TotalNewRecordCount += NewRecordCount;
+ NewRecord = (EFI_MEMORY_DESCRIPTOR *)((UINT8 *)NewRecord + NewRecordCount * DescriptorSize);
+
+ //
+ // Update PhysicalStart, in order to exclude the image buffer already splitted.
+ //
+ PhysicalStart = ImageRecord->ImageBase + ImageRecord->ImageSize;
+ TempRecord.PhysicalStart = PhysicalStart;
+ TempRecord.NumberOfPages = EfiSizeToPages (PhysicalEnd - PhysicalStart);
+ } while ((ImageRecord != NULL) && (PhysicalStart < PhysicalEnd));
+
+ return TotalNewRecordCount - 1;
+}
+
+/**
+ Split the original memory map, and add more entries to describe PE code section and data section.
+ This function will set EfiRuntimeServicesData to be EFI_MEMORY_XP.
+ This function will merge entries with same attributes finally.
+
+ NOTE: It assumes PE code/data section are page aligned.
+ NOTE: It assumes enough entry is prepared for new memory map.
+
+ Split table:
+ +---------------+
+ | Record X |
+ +---------------+
+ | Record RtCode |
+ +---------------+
+ | Record Y |
+ +---------------+
+ ==>
+ +---------------+
+ | Record X |
+ +---------------+ ----
+ | Record RtData | |
+ +---------------+ |
+ | Record RtCode | |-> PE/COFF1
+ +---------------+ |
+ | Record RtData | |
+ +---------------+ ----
+ | Record RtData | |
+ +---------------+ |
+ | Record RtCode | |-> PE/COFF2
+ +---------------+ |
+ | Record RtData | |
+ +---------------+ ----
+ | Record Y |
+ +---------------+
+
+ @param[in, out] MemoryMapSize A pointer to the size, in bytes, of the
+ MemoryMap buffer. On input, this is the size of
+ old MemoryMap before split. The actual buffer
+ size of MemoryMap is MemoryMapSize +
+ (AdditionalRecordCount * DescriptorSize) calculated
+ below. On output, it is the size of new MemoryMap
+ after split.
+ @param[in, out] MemoryMap A pointer to the buffer in which firmware places
+ the current memory map.
+ @param[in] DescriptorSize Size, in bytes, of an individual EFI_MEMORY_DESCRIPTOR.
+**/
+STATIC
+VOID
+SplitTable (
+ IN OUT UINTN *MemoryMapSize,
+ IN OUT EFI_MEMORY_DESCRIPTOR *MemoryMap,
+ IN UINTN DescriptorSize
+ )
+{
+ INTN IndexOld;
+ INTN IndexNew;
+ UINTN MaxSplitRecordCount;
+ UINTN RealSplitRecordCount;
+ UINTN TotalSplitRecordCount;
+ UINTN AdditionalRecordCount;
+
+ AdditionalRecordCount = (2 * mImagePropertiesPrivateData.CodeSegmentCountMax + 1) * mImagePropertiesPrivateData.ImageRecordCount;
+
+ TotalSplitRecordCount = 0;
+ //
+ // Let old record point to end of valid MemoryMap buffer.
+ //
+ IndexOld = ((*MemoryMapSize) / DescriptorSize) - 1;
+ //
+ // Let new record point to end of full MemoryMap buffer.
+ //
+ IndexNew = ((*MemoryMapSize) / DescriptorSize) - 1 + AdditionalRecordCount;
+ for (; IndexOld >= 0; IndexOld--) {
+ MaxSplitRecordCount = GetMaxSplitRecordCount ((EFI_MEMORY_DESCRIPTOR *)((UINT8 *)MemoryMap + IndexOld * DescriptorSize));
+ //
+ // Split this MemoryMap record
+ //
+ IndexNew -= MaxSplitRecordCount;
+ RealSplitRecordCount = SplitRecord (
+ (EFI_MEMORY_DESCRIPTOR *)((UINT8 *)MemoryMap + IndexOld * DescriptorSize),
+ (EFI_MEMORY_DESCRIPTOR *)((UINT8 *)MemoryMap + IndexNew * DescriptorSize),
+ MaxSplitRecordCount,
+ DescriptorSize
+ );
+ //
+ // Adjust IndexNew according to real split.
+ //
+ CopyMem (
+ ((UINT8 *)MemoryMap + (IndexNew + MaxSplitRecordCount - RealSplitRecordCount) * DescriptorSize),
+ ((UINT8 *)MemoryMap + IndexNew * DescriptorSize),
+ RealSplitRecordCount * DescriptorSize
+ );
+ IndexNew = IndexNew + MaxSplitRecordCount - RealSplitRecordCount;
+ TotalSplitRecordCount += RealSplitRecordCount;
+ IndexNew --;
+ }
+ //
+ // Move all records to the beginning.
+ //
+ CopyMem (
+ MemoryMap,
+ (UINT8 *)MemoryMap + (AdditionalRecordCount - TotalSplitRecordCount) * DescriptorSize,
+ (*MemoryMapSize) + TotalSplitRecordCount * DescriptorSize
+ );
+
+ *MemoryMapSize = (*MemoryMapSize) + DescriptorSize * TotalSplitRecordCount;
+
+ //
+ // Sort from low to high (Just in case)
+ //
+ SortMemoryMap (MemoryMap, *MemoryMapSize, DescriptorSize);
+
+ //
+ // Set RuntimeData to XP
+ //
+ EnforceMemoryMapAttribute (MemoryMap, *MemoryMapSize, DescriptorSize);
+
+ //
+ // Merge same type to save entry size
+ //
+ MergeMemoryMap (MemoryMap, MemoryMapSize, DescriptorSize);
+
+ return ;
+}
+
+/**
+ This function for GetMemoryMap() with memory attributes table.
+
+ It calls original GetMemoryMap() to get the original memory map information. Then
+ plus the additional memory map entries for PE Code/Data seperation.
+
+ @param[in, out] 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[in, out] MemoryMap A pointer to the buffer in which firmware places
+ the current memory map.
+ @param[out] MapKey A pointer to the location in which firmware
+ returns the key for the current memory map.
+ @param[out] DescriptorSize A pointer to the location in which firmware
+ returns the size, in bytes, of an individual
+ EFI_MEMORY_DESCRIPTOR.
+ @param[out] 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.
+
+**/
+STATIC
+EFI_STATUS
+EFIAPI
+SmmCoreGetMemoryMapMemoryAttributesTable (
+ IN OUT UINTN *MemoryMapSize,
+ IN OUT EFI_MEMORY_DESCRIPTOR *MemoryMap,
+ OUT UINTN *MapKey,
+ OUT UINTN *DescriptorSize,
+ OUT UINT32 *DescriptorVersion
+ )
+{
+ EFI_STATUS Status;
+ UINTN OldMemoryMapSize;
+ UINTN AdditionalRecordCount;
+
+ //
+ // If PE code/data is not aligned, just return.
+ //
+ if ((mMemoryProtectionAttribute & EFI_MEMORY_ATTRIBUTES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA) == 0) {
+ return SmmCoreGetMemoryMap (MemoryMapSize, MemoryMap, MapKey, DescriptorSize, DescriptorVersion);
+ }
+
+ if (MemoryMapSize == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ AdditionalRecordCount = (2 * mImagePropertiesPrivateData.CodeSegmentCountMax + 1) * mImagePropertiesPrivateData.ImageRecordCount;
+
+ OldMemoryMapSize = *MemoryMapSize;
+ Status = SmmCoreGetMemoryMap (MemoryMapSize, MemoryMap, MapKey, DescriptorSize, DescriptorVersion);
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ *MemoryMapSize = *MemoryMapSize + (*DescriptorSize) * AdditionalRecordCount;
+ } else if (Status == EFI_SUCCESS) {
+ if (OldMemoryMapSize - *MemoryMapSize < (*DescriptorSize) * AdditionalRecordCount) {
+ *MemoryMapSize = *MemoryMapSize + (*DescriptorSize) * AdditionalRecordCount;
+ //
+ // Need update status to buffer too small
+ //
+ Status = EFI_BUFFER_TOO_SMALL;
+ } else {
+ //
+ // Split PE code/data
+ //
+ ASSERT(MemoryMap != NULL);
+ SplitTable (MemoryMapSize, MemoryMap, *DescriptorSize);
+ }
+ }
+
+ return Status;
+}
+
+//
+// Below functions are for ImageRecord
+//
+
+/**
+ Set MemoryProtectionAttribute accroding to PE/COFF image section alignment.
+
+ @param[in] SectionAlignment PE/COFF section alignment
+**/
+STATIC
+VOID
+SetMemoryAttributesTableSectionAlignment (
+ IN UINT32 SectionAlignment
+ )
+{
+ if (((SectionAlignment & (EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT - 1)) != 0) &&
+ ((mMemoryProtectionAttribute & EFI_MEMORY_ATTRIBUTES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA) != 0)) {
+ DEBUG ((DEBUG_VERBOSE, "SMM SetMemoryAttributesTableSectionAlignment - Clear\n"));
+ mMemoryProtectionAttribute &= ~((UINT64)EFI_MEMORY_ATTRIBUTES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA);
+ }
+}
+
+/**
+ Swap two code sections in image record.
+
+ @param[in] FirstImageRecordCodeSection first code section in image record
+ @param[in] SecondImageRecordCodeSection second code section in image record
+**/
+STATIC
+VOID
+SwapImageRecordCodeSection (
+ IN IMAGE_PROPERTIES_RECORD_CODE_SECTION *FirstImageRecordCodeSection,
+ IN IMAGE_PROPERTIES_RECORD_CODE_SECTION *SecondImageRecordCodeSection
+ )
+{
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION TempImageRecordCodeSection;
+
+ TempImageRecordCodeSection.CodeSegmentBase = FirstImageRecordCodeSection->CodeSegmentBase;
+ TempImageRecordCodeSection.CodeSegmentSize = FirstImageRecordCodeSection->CodeSegmentSize;
+
+ FirstImageRecordCodeSection->CodeSegmentBase = SecondImageRecordCodeSection->CodeSegmentBase;
+ FirstImageRecordCodeSection->CodeSegmentSize = SecondImageRecordCodeSection->CodeSegmentSize;
+
+ SecondImageRecordCodeSection->CodeSegmentBase = TempImageRecordCodeSection.CodeSegmentBase;
+ SecondImageRecordCodeSection->CodeSegmentSize = TempImageRecordCodeSection.CodeSegmentSize;
+}
+
+/**
+ Sort code section in image record, based upon CodeSegmentBase from low to high.
+
+ @param[in] ImageRecord image record to be sorted
+**/
+STATIC
+VOID
+SortImageRecordCodeSection (
+ IN IMAGE_PROPERTIES_RECORD *ImageRecord
+ )
+{
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION *ImageRecordCodeSection;
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION *NextImageRecordCodeSection;
+ LIST_ENTRY *ImageRecordCodeSectionLink;
+ LIST_ENTRY *NextImageRecordCodeSectionLink;
+ LIST_ENTRY *ImageRecordCodeSectionEndLink;
+ LIST_ENTRY *ImageRecordCodeSectionList;
+
+ ImageRecordCodeSectionList = &ImageRecord->CodeSegmentList;
+
+ ImageRecordCodeSectionLink = ImageRecordCodeSectionList->ForwardLink;
+ NextImageRecordCodeSectionLink = ImageRecordCodeSectionLink->ForwardLink;
+ ImageRecordCodeSectionEndLink = ImageRecordCodeSectionList;
+ while (ImageRecordCodeSectionLink != ImageRecordCodeSectionEndLink) {
+ ImageRecordCodeSection = CR (
+ ImageRecordCodeSectionLink,
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION,
+ Link,
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION_SIGNATURE
+ );
+ while (NextImageRecordCodeSectionLink != ImageRecordCodeSectionEndLink) {
+ NextImageRecordCodeSection = CR (
+ NextImageRecordCodeSectionLink,
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION,
+ Link,
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION_SIGNATURE
+ );
+ if (ImageRecordCodeSection->CodeSegmentBase > NextImageRecordCodeSection->CodeSegmentBase) {
+ SwapImageRecordCodeSection (ImageRecordCodeSection, NextImageRecordCodeSection);
+ }
+ NextImageRecordCodeSectionLink = NextImageRecordCodeSectionLink->ForwardLink;
+ }
+
+ ImageRecordCodeSectionLink = ImageRecordCodeSectionLink->ForwardLink;
+ NextImageRecordCodeSectionLink = ImageRecordCodeSectionLink->ForwardLink;
+ }
+}
+
+/**
+ Check if code section in image record is valid.
+
+ @param[in] ImageRecord image record to be checked
+
+ @retval TRUE image record is valid
+ @retval FALSE image record is invalid
+**/
+STATIC
+BOOLEAN
+IsImageRecordCodeSectionValid (
+ IN IMAGE_PROPERTIES_RECORD *ImageRecord
+ )
+{
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION *ImageRecordCodeSection;
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION *LastImageRecordCodeSection;
+ LIST_ENTRY *ImageRecordCodeSectionLink;
+ LIST_ENTRY *ImageRecordCodeSectionEndLink;
+ LIST_ENTRY *ImageRecordCodeSectionList;
+
+ DEBUG ((DEBUG_VERBOSE, "SMM ImageCode SegmentCount - 0x%x\n", ImageRecord->CodeSegmentCount));
+
+ ImageRecordCodeSectionList = &ImageRecord->CodeSegmentList;
+
+ ImageRecordCodeSectionLink = ImageRecordCodeSectionList->ForwardLink;
+ ImageRecordCodeSectionEndLink = ImageRecordCodeSectionList;
+ LastImageRecordCodeSection = NULL;
+ while (ImageRecordCodeSectionLink != ImageRecordCodeSectionEndLink) {
+ ImageRecordCodeSection = CR (
+ ImageRecordCodeSectionLink,
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION,
+ Link,
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION_SIGNATURE
+ );
+ if (ImageRecordCodeSection->CodeSegmentSize == 0) {
+ return FALSE;
+ }
+ if (ImageRecordCodeSection->CodeSegmentBase < ImageRecord->ImageBase) {
+ return FALSE;
+ }
+ if (ImageRecordCodeSection->CodeSegmentBase >= MAX_ADDRESS - ImageRecordCodeSection->CodeSegmentSize) {
+ return FALSE;
+ }
+ if ((ImageRecordCodeSection->CodeSegmentBase + ImageRecordCodeSection->CodeSegmentSize) > (ImageRecord->ImageBase + ImageRecord->ImageSize)) {
+ return FALSE;
+ }
+ if (LastImageRecordCodeSection != NULL) {
+ if ((LastImageRecordCodeSection->CodeSegmentBase + LastImageRecordCodeSection->CodeSegmentSize) > ImageRecordCodeSection->CodeSegmentBase) {
+ return FALSE;
+ }
+ }
+
+ LastImageRecordCodeSection = ImageRecordCodeSection;
+ ImageRecordCodeSectionLink = ImageRecordCodeSectionLink->ForwardLink;
+ }
+
+ return TRUE;
+}
+
+/**
+ Swap two image records.
+
+ @param[in] FirstImageRecord first image record.
+ @param[in] SecondImageRecord second image record.
+**/
+STATIC
+VOID
+SwapImageRecord (
+ IN IMAGE_PROPERTIES_RECORD *FirstImageRecord,
+ IN IMAGE_PROPERTIES_RECORD *SecondImageRecord
+ )
+{
+ IMAGE_PROPERTIES_RECORD TempImageRecord;
+
+ TempImageRecord.ImageBase = FirstImageRecord->ImageBase;
+ TempImageRecord.ImageSize = FirstImageRecord->ImageSize;
+ TempImageRecord.CodeSegmentCount = FirstImageRecord->CodeSegmentCount;
+
+ FirstImageRecord->ImageBase = SecondImageRecord->ImageBase;
+ FirstImageRecord->ImageSize = SecondImageRecord->ImageSize;
+ FirstImageRecord->CodeSegmentCount = SecondImageRecord->CodeSegmentCount;
+
+ SecondImageRecord->ImageBase = TempImageRecord.ImageBase;
+ SecondImageRecord->ImageSize = TempImageRecord.ImageSize;
+ SecondImageRecord->CodeSegmentCount = TempImageRecord.CodeSegmentCount;
+
+ SwapListEntries (&FirstImageRecord->CodeSegmentList, &SecondImageRecord->CodeSegmentList);
+}
+
+/**
+ Sort image record based upon the ImageBase from low to high.
+**/
+STATIC
+VOID
+SortImageRecord (
+ VOID
+ )
+{
+ IMAGE_PROPERTIES_RECORD *ImageRecord;
+ IMAGE_PROPERTIES_RECORD *NextImageRecord;
+ LIST_ENTRY *ImageRecordLink;
+ LIST_ENTRY *NextImageRecordLink;
+ LIST_ENTRY *ImageRecordEndLink;
+ LIST_ENTRY *ImageRecordList;
+
+ ImageRecordList = &mImagePropertiesPrivateData.ImageRecordList;
+
+ ImageRecordLink = ImageRecordList->ForwardLink;
+ NextImageRecordLink = ImageRecordLink->ForwardLink;
+ ImageRecordEndLink = ImageRecordList;
+ while (ImageRecordLink != ImageRecordEndLink) {
+ ImageRecord = CR (
+ ImageRecordLink,
+ IMAGE_PROPERTIES_RECORD,
+ Link,
+ IMAGE_PROPERTIES_RECORD_SIGNATURE
+ );
+ while (NextImageRecordLink != ImageRecordEndLink) {
+ NextImageRecord = CR (
+ NextImageRecordLink,
+ IMAGE_PROPERTIES_RECORD,
+ Link,
+ IMAGE_PROPERTIES_RECORD_SIGNATURE
+ );
+ if (ImageRecord->ImageBase > NextImageRecord->ImageBase) {
+ SwapImageRecord (ImageRecord, NextImageRecord);
+ }
+ NextImageRecordLink = NextImageRecordLink->ForwardLink;
+ }
+
+ ImageRecordLink = ImageRecordLink->ForwardLink;
+ NextImageRecordLink = ImageRecordLink->ForwardLink;
+ }
+}
+
+/**
+ Dump image record.
+**/
+STATIC
+VOID
+DumpImageRecord (
+ VOID
+ )
+{
+ IMAGE_PROPERTIES_RECORD *ImageRecord;
+ LIST_ENTRY *ImageRecordLink;
+ LIST_ENTRY *ImageRecordList;
+ UINTN Index;
+
+ ImageRecordList = &mImagePropertiesPrivateData.ImageRecordList;
+
+ for (ImageRecordLink = ImageRecordList->ForwardLink, Index= 0;
+ ImageRecordLink != ImageRecordList;
+ ImageRecordLink = ImageRecordLink->ForwardLink, Index++) {
+ ImageRecord = CR (
+ ImageRecordLink,
+ IMAGE_PROPERTIES_RECORD,
+ Link,
+ IMAGE_PROPERTIES_RECORD_SIGNATURE
+ );
+ DEBUG ((DEBUG_VERBOSE, "SMM Image[%d]: 0x%016lx - 0x%016lx\n", Index, ImageRecord->ImageBase, ImageRecord->ImageSize));
+ }
+}
+
+/**
+ Insert image record.
+
+ @param[in] DriverEntry Driver information
+**/
+VOID
+SmmInsertImageRecord (
+ IN EFI_SMM_DRIVER_ENTRY *DriverEntry
+ )
+{
+ VOID *ImageAddress;
+ EFI_IMAGE_DOS_HEADER *DosHdr;
+ UINT32 PeCoffHeaderOffset;
+ UINT32 SectionAlignment;
+ EFI_IMAGE_SECTION_HEADER *Section;
+ EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;
+ UINT8 *Name;
+ UINTN Index;
+ IMAGE_PROPERTIES_RECORD *ImageRecord;
+ CHAR8 *PdbPointer;
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION *ImageRecordCodeSection;
+ UINT16 Magic;
+
+ DEBUG ((DEBUG_VERBOSE, "SMM InsertImageRecord - 0x%x\n", DriverEntry));
+ DEBUG ((DEBUG_VERBOSE, "SMM InsertImageRecord - 0x%016lx - 0x%08x\n", DriverEntry->ImageBuffer, DriverEntry->NumberOfPage));
+
+ ImageRecord = AllocatePool (sizeof(*ImageRecord));
+ if (ImageRecord == NULL) {
+ return ;
+ }
+ ImageRecord->Signature = IMAGE_PROPERTIES_RECORD_SIGNATURE;
+
+ DEBUG ((DEBUG_VERBOSE, "SMM ImageRecordCount - 0x%x\n", mImagePropertiesPrivateData.ImageRecordCount));
+
+ //
+ // Step 1: record whole region
+ //
+ ImageRecord->ImageBase = DriverEntry->ImageBuffer;
+ ImageRecord->ImageSize = EFI_PAGES_TO_SIZE(DriverEntry->NumberOfPage);
+
+ ImageAddress = (VOID *)(UINTN)DriverEntry->ImageBuffer;
+
+ PdbPointer = PeCoffLoaderGetPdbPointer ((VOID*) (UINTN) ImageAddress);
+ if (PdbPointer != NULL) {
+ DEBUG ((DEBUG_VERBOSE, "SMM Image - %a\n", PdbPointer));
+ }
+
+ //
+ // Check PE/COFF image
+ //
+ DosHdr = (EFI_IMAGE_DOS_HEADER *) (UINTN) ImageAddress;
+ PeCoffHeaderOffset = 0;
+ if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {
+ PeCoffHeaderOffset = DosHdr->e_lfanew;
+ }
+
+ Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINT8 *) (UINTN) ImageAddress + PeCoffHeaderOffset);
+ if (Hdr.Pe32->Signature != EFI_IMAGE_NT_SIGNATURE) {
+ DEBUG ((DEBUG_VERBOSE, "SMM Hdr.Pe32->Signature invalid - 0x%x\n", Hdr.Pe32->Signature));
+ goto Finish;
+ }
+
+ //
+ // Get SectionAlignment
+ //
+ if (Hdr.Pe32->FileHeader.Machine == IMAGE_FILE_MACHINE_IA64 && Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
+ //
+ // NOTE: Some versions of Linux ELILO for Itanium have an incorrect magic value
+ // in the PE/COFF Header. If the MachineType is Itanium(IA64) and the
+ // Magic value in the OptionalHeader is EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC
+ // then override the magic value to EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC
+ //
+ Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;
+ } else {
+ //
+ // Get the magic value from the PE/COFF Optional Header
+ //
+ Magic = Hdr.Pe32->OptionalHeader.Magic;
+ }
+ if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
+ SectionAlignment = Hdr.Pe32->OptionalHeader.SectionAlignment;
+ } else {
+ SectionAlignment = Hdr.Pe32Plus->OptionalHeader.SectionAlignment;
+ }
+
+ SetMemoryAttributesTableSectionAlignment (SectionAlignment);
+ if ((SectionAlignment & (EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT - 1)) != 0) {
+ DEBUG ((DEBUG_ERROR, "SMM !!!!!!!! InsertImageRecord - Section Alignment(0x%x) is not %dK !!!!!!!!\n",
+ SectionAlignment, EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT >> 10));
+ PdbPointer = PeCoffLoaderGetPdbPointer ((VOID*) (UINTN) ImageAddress);
+ if (PdbPointer != NULL) {
+ DEBUG ((DEBUG_ERROR, "SMM !!!!!!!! Image - %a !!!!!!!!\n", PdbPointer));
+ }
+ goto Finish;
+ }
+
+ Section = (EFI_IMAGE_SECTION_HEADER *) (
+ (UINT8 *) (UINTN) ImageAddress +
+ PeCoffHeaderOffset +
+ sizeof(UINT32) +
+ sizeof(EFI_IMAGE_FILE_HEADER) +
+ Hdr.Pe32->FileHeader.SizeOfOptionalHeader
+ );
+ ImageRecord->CodeSegmentCount = 0;
+ InitializeListHead (&ImageRecord->CodeSegmentList);
+ for (Index = 0; Index < Hdr.Pe32->FileHeader.NumberOfSections; Index++) {
+ Name = Section[Index].Name;
+ DEBUG ((
+ DEBUG_VERBOSE,
+ "SMM Section - '%c%c%c%c%c%c%c%c'\n",
+ Name[0],
+ Name[1],
+ Name[2],
+ Name[3],
+ Name[4],
+ Name[5],
+ Name[6],
+ Name[7]
+ ));
+
+ if ((Section[Index].Characteristics & EFI_IMAGE_SCN_CNT_CODE) != 0) {
+ DEBUG ((DEBUG_VERBOSE, "SMM VirtualSize - 0x%08x\n", Section[Index].Misc.VirtualSize));
+ DEBUG ((DEBUG_VERBOSE, "SMM VirtualAddress - 0x%08x\n", Section[Index].VirtualAddress));
+ DEBUG ((DEBUG_VERBOSE, "SMM SizeOfRawData - 0x%08x\n", Section[Index].SizeOfRawData));
+ DEBUG ((DEBUG_VERBOSE, "SMM PointerToRawData - 0x%08x\n", Section[Index].PointerToRawData));
+ DEBUG ((DEBUG_VERBOSE, "SMM PointerToRelocations - 0x%08x\n", Section[Index].PointerToRelocations));
+ DEBUG ((DEBUG_VERBOSE, "SMM PointerToLinenumbers - 0x%08x\n", Section[Index].PointerToLinenumbers));
+ DEBUG ((DEBUG_VERBOSE, "SMM NumberOfRelocations - 0x%08x\n", Section[Index].NumberOfRelocations));
+ DEBUG ((DEBUG_VERBOSE, "SMM NumberOfLinenumbers - 0x%08x\n", Section[Index].NumberOfLinenumbers));
+ DEBUG ((DEBUG_VERBOSE, "SMM Characteristics - 0x%08x\n", Section[Index].Characteristics));
+
+ //
+ // Step 2: record code section
+ //
+ ImageRecordCodeSection = AllocatePool (sizeof(*ImageRecordCodeSection));
+ if (ImageRecordCodeSection == NULL) {
+ return ;
+ }
+ ImageRecordCodeSection->Signature = IMAGE_PROPERTIES_RECORD_CODE_SECTION_SIGNATURE;
+
+ ImageRecordCodeSection->CodeSegmentBase = (UINTN)ImageAddress + Section[Index].VirtualAddress;
+ ImageRecordCodeSection->CodeSegmentSize = Section[Index].SizeOfRawData;
+
+ DEBUG ((DEBUG_VERBOSE, "SMM ImageCode: 0x%016lx - 0x%016lx\n", ImageRecordCodeSection->CodeSegmentBase, ImageRecordCodeSection->CodeSegmentSize));
+
+ InsertTailList (&ImageRecord->CodeSegmentList, &ImageRecordCodeSection->Link);
+ ImageRecord->CodeSegmentCount++;
+ }
+ }
+
+ if (ImageRecord->CodeSegmentCount == 0) {
+ SetMemoryAttributesTableSectionAlignment (1);
+ DEBUG ((DEBUG_ERROR, "SMM !!!!!!!! InsertImageRecord - CodeSegmentCount is 0 !!!!!!!!\n"));
+ PdbPointer = PeCoffLoaderGetPdbPointer ((VOID*) (UINTN) ImageAddress);
+ if (PdbPointer != NULL) {
+ DEBUG ((DEBUG_ERROR, "SMM !!!!!!!! Image - %a !!!!!!!!\n", PdbPointer));
+ }
+ goto Finish;
+ }
+
+ //
+ // Final
+ //
+ SortImageRecordCodeSection (ImageRecord);
+ //
+ // Check overlap all section in ImageBase/Size
+ //
+ if (!IsImageRecordCodeSectionValid (ImageRecord)) {
+ DEBUG ((DEBUG_ERROR, "SMM IsImageRecordCodeSectionValid - FAIL\n"));
+ goto Finish;
+ }
+
+ InsertTailList (&mImagePropertiesPrivateData.ImageRecordList, &ImageRecord->Link);
+ mImagePropertiesPrivateData.ImageRecordCount++;
+
+ SortImageRecord ();
+
+ if (mImagePropertiesPrivateData.CodeSegmentCountMax < ImageRecord->CodeSegmentCount) {
+ mImagePropertiesPrivateData.CodeSegmentCountMax = ImageRecord->CodeSegmentCount;
+ }
+
+Finish:
+ return ;
+}
+
+/**
+ Find image record accroding to image base and size.
+
+ @param[in] ImageBase Base of PE image
+ @param[in] ImageSize Size of PE image
+
+ @return image record
+**/
+STATIC
+IMAGE_PROPERTIES_RECORD *
+FindImageRecord (
+ IN EFI_PHYSICAL_ADDRESS ImageBase,
+ IN UINT64 ImageSize
+ )
+{
+ IMAGE_PROPERTIES_RECORD *ImageRecord;
+ LIST_ENTRY *ImageRecordLink;
+ LIST_ENTRY *ImageRecordList;
+
+ ImageRecordList = &mImagePropertiesPrivateData.ImageRecordList;
+
+ for (ImageRecordLink = ImageRecordList->ForwardLink;
+ ImageRecordLink != ImageRecordList;
+ ImageRecordLink = ImageRecordLink->ForwardLink) {
+ ImageRecord = CR (
+ ImageRecordLink,
+ IMAGE_PROPERTIES_RECORD,
+ Link,
+ IMAGE_PROPERTIES_RECORD_SIGNATURE
+ );
+
+ if ((ImageBase == ImageRecord->ImageBase) &&
+ (ImageSize == ImageRecord->ImageSize)) {
+ return ImageRecord;
+ }
+ }
+
+ return NULL;
+}
+
+/**
+ Remove Image record.
+
+ @param[in] DriverEntry Driver information
+**/
+VOID
+SmmRemoveImageRecord (
+ IN EFI_SMM_DRIVER_ENTRY *DriverEntry
+ )
+{
+ IMAGE_PROPERTIES_RECORD *ImageRecord;
+ LIST_ENTRY *CodeSegmentListHead;
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION *ImageRecordCodeSection;
+
+ DEBUG ((DEBUG_VERBOSE, "SMM RemoveImageRecord - 0x%x\n", DriverEntry));
+ DEBUG ((DEBUG_VERBOSE, "SMM RemoveImageRecord - 0x%016lx - 0x%016lx\n", DriverEntry->ImageBuffer, DriverEntry->NumberOfPage));
+
+ ImageRecord = FindImageRecord (DriverEntry->ImageBuffer, EFI_PAGES_TO_SIZE(DriverEntry->NumberOfPage));
+ if (ImageRecord == NULL) {
+ DEBUG ((DEBUG_ERROR, "SMM !!!!!!!! ImageRecord not found !!!!!!!!\n"));
+ return ;
+ }
+
+ CodeSegmentListHead = &ImageRecord->CodeSegmentList;
+ while (!IsListEmpty (CodeSegmentListHead)) {
+ ImageRecordCodeSection = CR (
+ CodeSegmentListHead->ForwardLink,
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION,
+ Link,
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION_SIGNATURE
+ );
+ RemoveEntryList (&ImageRecordCodeSection->Link);
+ FreePool (ImageRecordCodeSection);
+ }
+
+ RemoveEntryList (&ImageRecord->Link);
+ FreePool (ImageRecord);
+ mImagePropertiesPrivateData.ImageRecordCount--;
+}
+
+/**
+ Publish MemoryAttributesTable to SMM configuration table.
+**/
+VOID
+PublishMemoryAttributesTable (
+ VOID
+ )
+{
+ UINTN MemoryMapSize;
+ EFI_MEMORY_DESCRIPTOR *MemoryMap;
+ UINTN MapKey;
+ UINTN DescriptorSize;
+ UINT32 DescriptorVersion;
+ UINTN Index;
+ EFI_STATUS Status;
+ UINTN RuntimeEntryCount;
+ EDKII_PI_SMM_MEMORY_ATTRIBUTES_TABLE *MemoryAttributesTable;
+ EFI_MEMORY_DESCRIPTOR *MemoryAttributesEntry;
+ UINTN MemoryAttributesTableSize;
+
+ MemoryMapSize = 0;
+ MemoryMap = NULL;
+ Status = SmmCoreGetMemoryMapMemoryAttributesTable (
+ &MemoryMapSize,
+ MemoryMap,
+ &MapKey,
+ &DescriptorSize,
+ &DescriptorVersion
+ );
+ ASSERT (Status == EFI_BUFFER_TOO_SMALL);
+
+ do {
+ DEBUG ((DEBUG_INFO, "MemoryMapSize - 0x%x\n", MemoryMapSize));
+ MemoryMap = AllocatePool (MemoryMapSize);
+ ASSERT (MemoryMap != NULL);
+ DEBUG ((DEBUG_INFO, "MemoryMap - 0x%x\n", MemoryMap));
+
+ Status = SmmCoreGetMemoryMapMemoryAttributesTable (
+ &MemoryMapSize,
+ MemoryMap,
+ &MapKey,
+ &DescriptorSize,
+ &DescriptorVersion
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool (MemoryMap);
+ }
+ } while (Status == EFI_BUFFER_TOO_SMALL);
+
+ //
+ // Allocate MemoryAttributesTable
+ //
+ RuntimeEntryCount = MemoryMapSize/DescriptorSize;
+ MemoryAttributesTableSize = sizeof(EDKII_PI_SMM_MEMORY_ATTRIBUTES_TABLE) + DescriptorSize * RuntimeEntryCount;
+ MemoryAttributesTable = AllocatePool (sizeof(EDKII_PI_SMM_MEMORY_ATTRIBUTES_TABLE) + DescriptorSize * RuntimeEntryCount);
+ ASSERT (MemoryAttributesTable != NULL);
+ MemoryAttributesTable->Version = EDKII_PI_SMM_MEMORY_ATTRIBUTES_TABLE_VERSION;
+ MemoryAttributesTable->NumberOfEntries = (UINT32)RuntimeEntryCount;
+ MemoryAttributesTable->DescriptorSize = (UINT32)DescriptorSize;
+ MemoryAttributesTable->Reserved = 0;
+ DEBUG ((DEBUG_INFO, "MemoryAttributesTable:\n"));
+ DEBUG ((DEBUG_INFO, " Version - 0x%08x\n", MemoryAttributesTable->Version));
+ DEBUG ((DEBUG_INFO, " NumberOfEntries - 0x%08x\n", MemoryAttributesTable->NumberOfEntries));
+ DEBUG ((DEBUG_INFO, " DescriptorSize - 0x%08x\n", MemoryAttributesTable->DescriptorSize));
+ MemoryAttributesEntry = (EFI_MEMORY_DESCRIPTOR *)(MemoryAttributesTable + 1);
+ for (Index = 0; Index < MemoryMapSize/DescriptorSize; Index++) {
+ CopyMem (MemoryAttributesEntry, MemoryMap, DescriptorSize);
+ DEBUG ((DEBUG_INFO, "Entry (0x%x)\n", MemoryAttributesEntry));
+ DEBUG ((DEBUG_INFO, " Type - 0x%x\n", MemoryAttributesEntry->Type));
+ DEBUG ((DEBUG_INFO, " PhysicalStart - 0x%016lx\n", MemoryAttributesEntry->PhysicalStart));
+ DEBUG ((DEBUG_INFO, " VirtualStart - 0x%016lx\n", MemoryAttributesEntry->VirtualStart));
+ DEBUG ((DEBUG_INFO, " NumberOfPages - 0x%016lx\n", MemoryAttributesEntry->NumberOfPages));
+ DEBUG ((DEBUG_INFO, " Attribute - 0x%016lx\n", MemoryAttributesEntry->Attribute));
+ MemoryAttributesEntry = NEXT_MEMORY_DESCRIPTOR(MemoryAttributesEntry, DescriptorSize);
+
+ MemoryMap = NEXT_MEMORY_DESCRIPTOR(MemoryMap, DescriptorSize);
+ }
+
+ Status = gSmst->SmmInstallConfigurationTable (gSmst, &gEdkiiPiSmmMemoryAttributesTableGuid, MemoryAttributesTable, MemoryAttributesTableSize);
+ ASSERT_EFI_ERROR (Status);
+}
+
+/**
+ This function returns if image is inside SMRAM.
+
+ @param[in] LoadedImage LoadedImage protocol instance for an image.
+
+ @retval TRUE the image is inside SMRAM.
+ @retval FALSE the image is outside SMRAM.
+**/
+BOOLEAN
+IsImageInsideSmram (
+ IN EFI_LOADED_IMAGE_PROTOCOL *LoadedImage
+ )
+{
+ UINTN Index;
+
+ for (Index = 0; Index < mFullSmramRangeCount; Index++) {
+ if ((mFullSmramRanges[Index].PhysicalStart <= (UINTN)LoadedImage->ImageBase)&&
+ (mFullSmramRanges[Index].PhysicalStart + mFullSmramRanges[Index].PhysicalSize >= (UINTN)LoadedImage->ImageBase + LoadedImage->ImageSize)) {
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
+/**
+ This function installs all SMM image record information.
+**/
+VOID
+SmmInstallImageRecord (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ UINTN NoHandles;
+ EFI_HANDLE *HandleBuffer;
+ EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
+ UINTN Index;
+ EFI_SMM_DRIVER_ENTRY DriverEntry;
+
+ Status = SmmLocateHandleBuffer (
+ ByProtocol,
+ &gEfiLoadedImageProtocolGuid,
+ NULL,
+ &NoHandles,
+ &HandleBuffer
+ );
+ if (EFI_ERROR (Status)) {
+ return ;
+ }
+
+ for (Index = 0; Index < NoHandles; Index++) {
+ Status = gSmst->SmmHandleProtocol (
+ HandleBuffer[Index],
+ &gEfiLoadedImageProtocolGuid,
+ (VOID **)&LoadedImage
+ );
+ if (EFI_ERROR (Status)) {
+ continue;
+ }
+ DEBUG ((DEBUG_VERBOSE, "LoadedImage - 0x%x 0x%x ", LoadedImage->ImageBase, LoadedImage->ImageSize));
+ {
+ VOID *PdbPointer;
+ PdbPointer = PeCoffLoaderGetPdbPointer (LoadedImage->ImageBase);
+ if (PdbPointer != NULL) {
+ DEBUG ((DEBUG_VERBOSE, "(%a) ", PdbPointer));
+ }
+ }
+ DEBUG ((DEBUG_VERBOSE, "\n"));
+ ZeroMem (&DriverEntry, sizeof(DriverEntry));
+ DriverEntry.ImageBuffer = (UINTN)LoadedImage->ImageBase;
+ DriverEntry.NumberOfPage = EFI_SIZE_TO_PAGES((UINTN)LoadedImage->ImageSize);
+ SmmInsertImageRecord (&DriverEntry);
+ }
+
+ FreePool (HandleBuffer);
+}
+
+/**
+ Install MemoryAttributesTable.
+
+ @param[in] Protocol Points to the protocol's unique identifier.
+ @param[in] Interface Points to the interface instance.
+ @param[in] Handle The handle on which the interface was installed.
+
+ @retval EFI_SUCCESS Notification runs successfully.
+**/
+EFI_STATUS
+EFIAPI
+SmmInstallMemoryAttributesTable (
+ IN CONST EFI_GUID *Protocol,
+ IN VOID *Interface,
+ IN EFI_HANDLE Handle
+ )
+{
+ SmmInstallImageRecord ();
+
+ DEBUG ((DEBUG_INFO, "SMM MemoryProtectionAttribute - 0x%016lx\n", mMemoryProtectionAttribute));
+ if ((mMemoryProtectionAttribute & EFI_MEMORY_ATTRIBUTES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA) == 0) {
+ return EFI_SUCCESS;
+ }
+
+ DEBUG ((DEBUG_VERBOSE, "SMM Total Image Count - 0x%x\n", mImagePropertiesPrivateData.ImageRecordCount));
+ DEBUG ((DEBUG_VERBOSE, "SMM Dump ImageRecord:\n"));
+ DumpImageRecord ();
+
+ PublishMemoryAttributesTable ();
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Initialize MemoryAttributesTable support.
+**/
+VOID
+EFIAPI
+SmmCoreInitializeMemoryAttributesTable (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ VOID *Registration;
+
+ Status = gSmst->SmmRegisterProtocolNotify (
+ &gEfiSmmEndOfDxeProtocolGuid,
+ SmmInstallMemoryAttributesTable,
+ &Registration
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ return ;
+}
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