sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
Files
61a62fc2587ae4d01718124f28e1ea0e60375902
system76-edk2/MdeModulePkg/Core/Dxe/Misc/PropertiesTable.c
Jian J Wang 63ebde8ef6 MdeModulePkg/Core: add freed-memory guard feature 
Freed-memory guard is used to detect UAF (Use-After-Free) memory issue
which is illegal access to memory which has been freed. The principle
behind is similar to pool guard feature, that is we'll turn all pool
memory allocation to page allocation and mark them to be not-present
once they are freed.

This also implies that, once a page is allocated and freed, it cannot
be re-allocated. This will bring another issue, which is that there's
risk that memory space will be used out. To address it, the memory
service add logic to put part (at most 64 pages a time) of freed pages
back into page pool, so that the memory service can still have memory
to allocate, when all memory space have been allocated once. This is
called memory promotion. The promoted pages are always from the eldest
pages which haven been freed.

This feature brings another problem is that memory map descriptors will
be increased enormously (200+ -> 2000+). One of change in this patch
is to update MergeMemoryMap() in file PropertiesTable.c to allow merge
freed pages back into the memory map. Now the number can stay at around
510.

Cc: Star Zeng <star.zeng@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
2018-10-26 10:30:35 +08:00

1380 lines
48 KiB
C
Raw Blame History

/** @file
UEFI PropertiesTable support
Copyright (c) 2015 - 2018, 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/DxeServicesTableLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiLib.h>
#include <Library/PcdLib.h>
#include <Guid/EventGroup.h>
#include <Protocol/DxeSmmReadyToLock.h>
#include <Library/PeCoffLib.h>
#include <Library/PeCoffGetEntryPointLib.h>
#include <Protocol/Runtime.h>
#include <Guid/PropertiesTable.h>
#include "DxeMain.h"
#include "HeapGuard.h"
#define PREVIOUS_MEMORY_DESCRIPTOR(MemoryDescriptor, Size) \
((EFI_MEMORY_DESCRIPTOR *)((UINT8 *)(MemoryDescriptor) - (Size)))
#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)
};
EFI_PROPERTIES_TABLE mPropertiesTable = {
EFI_PROPERTIES_TABLE_VERSION,
sizeof(EFI_PROPERTIES_TABLE),
EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA
};
EFI_LOCK mPropertiesTableLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_NOTIFY);
BOOLEAN mPropertiesTableEnable;
BOOLEAN mPropertiesTableEndOfDxe = FALSE;
//
// 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 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 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);
}
/**
Acquire memory lock on mPropertiesTableLock.
**/
STATIC
VOID
CoreAcquirePropertiesTableLock (
VOID
)
{
CoreAcquireLock (&mPropertiesTableLock);
}
/**
Release memory lock on mPropertiesTableLock.
**/
STATIC
VOID
CoreReleasePropertiesTableLock (
VOID
)
{
CoreReleaseLock (&mPropertiesTableLock);
}
/**
Sort memory map entries based upon PhysicalStart, from low to high.
@param MemoryMap A pointer to the buffer in which firmware places
the current memory map.
@param MemoryMapSize Size, in bytes, of the MemoryMap buffer.
@param 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 MemoryMap A pointer to the buffer in which firmware places
the current memory map.
@param 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 DescriptorSize Size, in bytes, of an individual EFI_MEMORY_DESCRIPTOR.
**/
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 {
MergeGuardPages (NewMemoryMapEntry, NextMemoryMapEntry->PhysicalStart);
MemoryBlockLength = (UINT64) (EfiPagesToSize (NewMemoryMapEntry->NumberOfPages));
if (((UINTN)NextMemoryMapEntry < (UINTN)MemoryMapEnd) &&
(NewMemoryMapEntry->Type == NextMemoryMapEntry->Type) &&
(NewMemoryMapEntry->Attribute == NextMemoryMapEntry->Attribute) &&
((NewMemoryMapEntry->PhysicalStart + MemoryBlockLength) == NextMemoryMapEntry->PhysicalStart)) {
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 MemoryMap A pointer to the buffer in which firmware places
the current memory map.
@param MemoryMapSize Size, in bytes, of the MemoryMap buffer.
@param 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:
// do nothing
break;
case EfiRuntimeServicesData:
case EfiMemoryMappedIO:
case EfiMemoryMappedIOPortSpace:
MemoryMapEntry->Attribute |= EFI_MEMORY_XP;
break;
case EfiReservedMemoryType:
case EfiACPIMemoryNVS:
break;
}
MemoryMapEntry = NEXT_MEMORY_DESCRIPTOR (MemoryMapEntry, DescriptorSize);
}
return ;
}
/**
Return the first image record, whose [ImageBase, ImageSize] covered by [Buffer, Length].
@param Buffer Start Address
@param 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 ImageRecord An image record whose [ImageBase, ImageSize] covered
by old memory map entry.
@param NewRecord A pointer to several new memory map entries.
The caller gurantee the buffer size be 1 +
(SplitRecordCount * DescriptorSize) calculated
below.
@param OldRecord A pointer to one old memory map entry.
@param 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
//
if (!mPropertiesTableEnable) {
NewRecord->Type = TempRecord.Type;
} else {
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
//
if (!mPropertiesTableEnable) {
NewRecord->Type = TempRecord.Type;
} else {
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) {
if (!mPropertiesTableEnable) {
NewRecord->Type = TempRecord.Type;
} else {
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 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 OldRecord A pointer to one old memory map entry.
@param NewRecord A pointer to several new memory map entries.
The caller gurantee the buffer size be 1 +
(SplitRecordCount * DescriptorSize) calculated
below.
@param MaxSplitRecordCount The max number of splitted entries
@param 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;
BOOLEAN IsLastRecordData;
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);
IsLastRecordData = FALSE;
if (!mPropertiesTableEnable) {
if ((NewRecord->Attribute & EFI_MEMORY_XP) != 0) {
IsLastRecordData = TRUE;
}
} else {
if (NewRecord->Type == EfiRuntimeServicesData) {
IsLastRecordData = TRUE;
}
}
if (IsLastRecordData) {
//
// 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);
if (!mPropertiesTableEnable) {
NewRecord->Type = TempRecord.Type;
} else {
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));
//
// The logic in function SplitTable() ensures that TotalNewRecordCount will not be zero if the
// code reaches here.
//
ASSERT (TotalNewRecordCount != 0);
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 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 MemoryMap A pointer to the buffer in which firmware places
the current memory map.
@param 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 properties table capability.
It calls original GetMemoryMap() to get the original memory map information. Then
plus the additional memory map entries for PE Code/Data seperation.
@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
CoreGetMemoryMapWithSeparatedImageSection (
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 ((mPropertiesTable.MemoryProtectionAttribute & EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA) == 0) {
return CoreGetMemoryMap (MemoryMapSize, MemoryMap, MapKey, DescriptorSize, DescriptorVersion);
}
if (MemoryMapSize == NULL) {
return EFI_INVALID_PARAMETER;
}
CoreAcquirePropertiesTableLock ();
AdditionalRecordCount = (2 * mImagePropertiesPrivateData.CodeSegmentCountMax + 1) * mImagePropertiesPrivateData.ImageRecordCount;
OldMemoryMapSize = *MemoryMapSize;
Status = CoreGetMemoryMap (MemoryMapSize, MemoryMap, MapKey, DescriptorSize, DescriptorVersion);
if (Status == EFI_BUFFER_TOO_SMALL) {
*MemoryMapSize = *MemoryMapSize + (*DescriptorSize) * AdditionalRecordCount;
} else if (Status == EFI_SUCCESS) {
ASSERT (MemoryMap != NULL);
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
//
SplitTable (MemoryMapSize, MemoryMap, *DescriptorSize);
}
}
CoreReleasePropertiesTableLock ();
return Status;
}
//
// Below functions are for ImageRecord
//
/**
Set PropertiesTable according to PE/COFF image section alignment.
@param SectionAlignment PE/COFF section alignment
**/
STATIC
VOID
SetPropertiesTableSectionAlignment (
IN UINT32 SectionAlignment
)
{
if (((SectionAlignment & (RUNTIME_PAGE_ALLOCATION_GRANULARITY - 1)) != 0) &&
((mPropertiesTable.MemoryProtectionAttribute & EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA) != 0)) {
DEBUG ((EFI_D_VERBOSE, "SetPropertiesTableSectionAlignment - Clear\n"));
mPropertiesTable.MemoryProtectionAttribute &= ~((UINT64)EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA);
gBS->GetMemoryMap = CoreGetMemoryMap;
gBS->Hdr.CRC32 = 0;
gBS->CalculateCrc32 ((UINT8 *)gBS, gBS->Hdr.HeaderSize, &gBS->Hdr.CRC32);
}
}
/**
Swap two code sections in image record.
@param FirstImageRecordCodeSection first code section in image record
@param 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 ImageRecord image record to be sorted
**/
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 ImageRecord image record to be checked
@retval TRUE image record is valid
@retval FALSE image record is invalid
**/
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 ((EFI_D_VERBOSE, "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 FirstImageRecord first image record.
@param 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 ((EFI_D_VERBOSE, " Image[%d]: 0x%016lx - 0x%016lx\n", Index, ImageRecord->ImageBase, ImageRecord->ImageSize));
}
}
/**
Insert image record.
@param RuntimeImage Runtime image information
**/
VOID
InsertImageRecord (
IN EFI_RUNTIME_IMAGE_ENTRY *RuntimeImage
)
{
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;
DEBUG ((EFI_D_VERBOSE, "InsertImageRecord - 0x%x\n", RuntimeImage));
DEBUG ((EFI_D_VERBOSE, "InsertImageRecord - 0x%016lx - 0x%016lx\n", (EFI_PHYSICAL_ADDRESS)(UINTN)RuntimeImage->ImageBase, RuntimeImage->ImageSize));
if (mPropertiesTableEndOfDxe) {
DEBUG ((DEBUG_INFO, "Do not insert runtime image record after EndOfDxe\n"));
return ;
}
ImageRecord = AllocatePool (sizeof(*ImageRecord));
if (ImageRecord == NULL) {
return ;
}
ImageRecord->Signature = IMAGE_PROPERTIES_RECORD_SIGNATURE;
DEBUG ((EFI_D_VERBOSE, "ImageRecordCount - 0x%x\n", mImagePropertiesPrivateData.ImageRecordCount));
//
// Step 1: record whole region
//
ImageRecord->ImageBase = (EFI_PHYSICAL_ADDRESS)(UINTN)RuntimeImage->ImageBase;
ImageRecord->ImageSize = RuntimeImage->ImageSize;
ImageAddress = RuntimeImage->ImageBase;
PdbPointer = PeCoffLoaderGetPdbPointer ((VOID*) (UINTN) ImageAddress);
if (PdbPointer != NULL) {
DEBUG ((EFI_D_VERBOSE, " 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 ((EFI_D_VERBOSE, "Hdr.Pe32->Signature invalid - 0x%x\n", Hdr.Pe32->Signature));
// It might be image in SMM.
goto Finish;
}
//
// Get SectionAlignment
//
if (Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {
SectionAlignment = Hdr.Pe32->OptionalHeader.SectionAlignment;
} else {
SectionAlignment = Hdr.Pe32Plus->OptionalHeader.SectionAlignment;
}
SetPropertiesTableSectionAlignment (SectionAlignment);
if ((SectionAlignment & (RUNTIME_PAGE_ALLOCATION_GRANULARITY - 1)) != 0) {
DEBUG ((EFI_D_WARN, "!!!!!!!! InsertImageRecord - Section Alignment(0x%x) is not %dK !!!!!!!!\n",
SectionAlignment, RUNTIME_PAGE_ALLOCATION_GRANULARITY >> 10));
PdbPointer = PeCoffLoaderGetPdbPointer ((VOID*) (UINTN) ImageAddress);
if (PdbPointer != NULL) {
DEBUG ((EFI_D_WARN, "!!!!!!!! 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 ((
EFI_D_VERBOSE,
" 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 ((EFI_D_VERBOSE, " VirtualSize - 0x%08x\n", Section[Index].Misc.VirtualSize));
DEBUG ((EFI_D_VERBOSE, " VirtualAddress - 0x%08x\n", Section[Index].VirtualAddress));
DEBUG ((EFI_D_VERBOSE, " SizeOfRawData - 0x%08x\n", Section[Index].SizeOfRawData));
DEBUG ((EFI_D_VERBOSE, " PointerToRawData - 0x%08x\n", Section[Index].PointerToRawData));
DEBUG ((EFI_D_VERBOSE, " PointerToRelocations - 0x%08x\n", Section[Index].PointerToRelocations));
DEBUG ((EFI_D_VERBOSE, " PointerToLinenumbers - 0x%08x\n", Section[Index].PointerToLinenumbers));
DEBUG ((EFI_D_VERBOSE, " NumberOfRelocations - 0x%08x\n", Section[Index].NumberOfRelocations));
DEBUG ((EFI_D_VERBOSE, " NumberOfLinenumbers - 0x%08x\n", Section[Index].NumberOfLinenumbers));
DEBUG ((EFI_D_VERBOSE, " 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 ((EFI_D_VERBOSE, "ImageCode: 0x%016lx - 0x%016lx\n", ImageRecordCodeSection->CodeSegmentBase, ImageRecordCodeSection->CodeSegmentSize));
InsertTailList (&ImageRecord->CodeSegmentList, &ImageRecordCodeSection->Link);
ImageRecord->CodeSegmentCount++;
}
}
if (ImageRecord->CodeSegmentCount == 0) {
SetPropertiesTableSectionAlignment (1);
DEBUG ((EFI_D_ERROR, "!!!!!!!! InsertImageRecord - CodeSegmentCount is 0 !!!!!!!!\n"));
PdbPointer = PeCoffLoaderGetPdbPointer ((VOID*) (UINTN) ImageAddress);
if (PdbPointer != NULL) {
DEBUG ((EFI_D_ERROR, "!!!!!!!! Image - %a !!!!!!!!\n", PdbPointer));
}
goto Finish;
}
//
// Final
//
SortImageRecordCodeSection (ImageRecord);
//
// Check overlap all section in ImageBase/Size
//
if (!IsImageRecordCodeSectionValid (ImageRecord)) {
DEBUG ((EFI_D_ERROR, "IsImageRecordCodeSectionValid - FAIL\n"));
goto Finish;
}
InsertTailList (&mImagePropertiesPrivateData.ImageRecordList, &ImageRecord->Link);
mImagePropertiesPrivateData.ImageRecordCount++;
if (mImagePropertiesPrivateData.CodeSegmentCountMax < ImageRecord->CodeSegmentCount) {
mImagePropertiesPrivateData.CodeSegmentCountMax = ImageRecord->CodeSegmentCount;
}
SortImageRecord ();
Finish:
return ;
}
/**
Find image record according to image base and size.
@param ImageBase Base of PE image
@param 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 RuntimeImage Runtime image information
**/
VOID
RemoveImageRecord (
IN EFI_RUNTIME_IMAGE_ENTRY *RuntimeImage
)
{
IMAGE_PROPERTIES_RECORD *ImageRecord;
LIST_ENTRY *CodeSegmentListHead;
IMAGE_PROPERTIES_RECORD_CODE_SECTION *ImageRecordCodeSection;
DEBUG ((EFI_D_VERBOSE, "RemoveImageRecord - 0x%x\n", RuntimeImage));
DEBUG ((EFI_D_VERBOSE, "RemoveImageRecord - 0x%016lx - 0x%016lx\n", (EFI_PHYSICAL_ADDRESS)(UINTN)RuntimeImage->ImageBase, RuntimeImage->ImageSize));
if (mPropertiesTableEndOfDxe) {
DEBUG ((DEBUG_INFO, "Do not remove runtime image record after EndOfDxe\n"));
return ;
}
ImageRecord = FindImageRecord ((EFI_PHYSICAL_ADDRESS)(UINTN)RuntimeImage->ImageBase, RuntimeImage->ImageSize);
if (ImageRecord == NULL) {
DEBUG ((EFI_D_ERROR, "!!!!!!!! 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--;
}
/**
Install PropertiesTable.
@param[in] Event The Event this notify function registered to.
@param[in] Context Pointer to the context data registered to the Event.
**/
VOID
EFIAPI
InstallPropertiesTable (
EFI_EVENT Event,
VOID *Context
)
{
mPropertiesTableEndOfDxe = TRUE;
if (PcdGetBool (PcdPropertiesTableEnable)) {
EFI_STATUS Status;
Status = gBS->InstallConfigurationTable (&gEfiPropertiesTableGuid, &mPropertiesTable);
ASSERT_EFI_ERROR (Status);
DEBUG ((EFI_D_INFO, "MemoryProtectionAttribute - 0x%016lx\n", mPropertiesTable.MemoryProtectionAttribute));
if ((mPropertiesTable.MemoryProtectionAttribute & EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA) == 0) {
DEBUG ((EFI_D_ERROR, "MemoryProtectionAttribute NON_EXECUTABLE_PE_DATA is not set, "));
DEBUG ((EFI_D_ERROR, "because Runtime Driver Section Alignment is not %dK.\n", RUNTIME_PAGE_ALLOCATION_GRANULARITY >> 10));
return ;
}
gBS->GetMemoryMap = CoreGetMemoryMapWithSeparatedImageSection;
gBS->Hdr.CRC32 = 0;
gBS->CalculateCrc32 ((UINT8 *)gBS, gBS->Hdr.HeaderSize, &gBS->Hdr.CRC32);
DEBUG ((EFI_D_VERBOSE, "Total Image Count - 0x%x\n", mImagePropertiesPrivateData.ImageRecordCount));
DEBUG ((EFI_D_VERBOSE, "Dump ImageRecord:\n"));
DumpImageRecord ();
mPropertiesTableEnable = TRUE;
}
}
/**
Initialize PropertiesTable support.
**/
VOID
EFIAPI
CoreInitializePropertiesTable (
VOID
)
{
EFI_STATUS Status;
EFI_EVENT EndOfDxeEvent;
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
InstallPropertiesTable,
NULL,
&gEfiEndOfDxeEventGroupGuid,
&EndOfDxeEvent
);
ASSERT_EFI_ERROR (Status);
return ;
}
Reference in New Issue View Git Blame Copy Permalink