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Enable the Load Module At fixed Address feature

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9937 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
jchen20
2010-02-05 07:54:16 +00:00
parent f3198cba84
commit 54ea99a798
12 changed files with 972 additions and 61 deletions
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229
MdeModulePkg/Core/Dxe/Image/Image.c
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@@ -70,8 +70,12 @@ LOADED_IMAGE_PRIVATE_DATA mCorePrivateImage = {
NULL, // RuntimeData
NULL // LoadedImageDevicePath
};
//
// The field is define for Loading modules at fixed address feature to tracker the PEI code
// memory range usage. It is a bit mapped array in which every bit indicates the correspoding memory page
// available or not.
//
GLOBAL_REMOVE_IF_UNREFERENCED UINT64 *mDxeCodeMemoryRangeUsageBitMap=NULL;
/**
Add the Image Services to EFI Boot Services Table and install the protocol
@@ -202,7 +206,170 @@ CoreReadImageFile (
CopyMem (Buffer, (CHAR8 *)FHand->Source + Offset, *ReadSize);
return EFI_SUCCESS;
}
/**
To check memory usage bit map arry to figure out if the memory range the image will be loaded in is available or not. If
memory range is avaliable, the function will mark the correponding bits to 1 which indicates the memory range is used.
The function is only invoked when load modules at fixed address feature is enabled.
@param ImageBase The base addres the image will be loaded at.
@param ImageSize The size of the image
@retval EFI_SUCCESS The memory range the image will be loaded in is available
@retval EFI_NOT_FOUND The memory range the image will be loaded in is not available
**/
EFI_STATUS
CheckAndMarkFixLoadingMemoryUsageBitMap (
IN EFI_PHYSICAL_ADDRESS ImageBase,
IN UINTN ImageSize
)
{
UINT32 DxeCodePageNumber;
UINT64 DxeCodeSize;
EFI_PHYSICAL_ADDRESS DxeCodeBase;
UINTN BaseOffsetPageNumber;
UINTN TopOffsetPageNumber;
UINTN Index;
//
// The DXE code range includes RuntimeCodePage range and Boot time code range.
//
DxeCodePageNumber = PcdGet32(PcdLoadFixAddressRuntimeCodePageNumber);
DxeCodePageNumber += PcdGet32(PcdLoadFixAddressBootTimeCodePageNumber);
DxeCodeSize = EFI_PAGES_TO_SIZE(DxeCodePageNumber);
DxeCodeBase = gLoadModuleAtFixAddressConfigurationTable.DxeCodeTopAddress - DxeCodeSize;
//
// If the memory usage bit map is not initialized, do it. Every bit in the array
// indicate the status of the corresponding memory page, available or not
//
if (mDxeCodeMemoryRangeUsageBitMap == NULL) {
mDxeCodeMemoryRangeUsageBitMap = AllocateZeroPool(((DxeCodePageNumber/64) + 1)*sizeof(UINT64));
}
//
// If the Dxe code memory range is not allocated or the bit map array allocation failed, return EFI_NOT_FOUND
//
if (!gLoadFixedAddressCodeMemoryReady || mDxeCodeMemoryRangeUsageBitMap == NULL) {
return EFI_NOT_FOUND;
}
//
// Test the memory range for loading the image in the DXE code range.
//
if (gLoadModuleAtFixAddressConfigurationTable.DxeCodeTopAddress < ImageBase + ImageSize ||
DxeCodeBase > ImageBase) {
return EFI_NOT_FOUND;
}
//
// Test if the memory is avalaible or not.
//
BaseOffsetPageNumber = (UINTN)EFI_SIZE_TO_PAGES((UINT32)(ImageBase - DxeCodeBase));
TopOffsetPageNumber = (UINTN)EFI_SIZE_TO_PAGES((UINT32)(ImageBase + ImageSize - DxeCodeBase));
for (Index = BaseOffsetPageNumber; Index < TopOffsetPageNumber; Index ++) {
if ((mDxeCodeMemoryRangeUsageBitMap[Index / 64] & LShiftU64(1, (Index % 64))) != 0) {
//
// This page is already used.
//
return EFI_NOT_FOUND;
}
}
//
// Being here means the memory range is available. So mark the bits for the memory range
//
for (Index = BaseOffsetPageNumber; Index < TopOffsetPageNumber; Index ++) {
mDxeCodeMemoryRangeUsageBitMap[Index / 64] |= LShiftU64(1, (Index % 64));
}
return EFI_SUCCESS;
}
/**
Get the fixed loadding address from image header assigned by build tool. This function only be called
when Loading module at Fixed address feature enabled.
@param ImageContext Pointer to the image context structure that describes the PE/COFF
image that needs to be examined by this function.
@retval EFI_SUCCESS An fixed loading address is assigned to this image by build tools .
@retval EFI_NOT_FOUND The image has no assigned fixed loadding address.
**/
EFI_STATUS
GetPeCoffImageFixLoadingAssignedAddress(
IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
)
{
UINTN SectionHeaderOffset;
EFI_STATUS Status;
EFI_IMAGE_SECTION_HEADER SectionHeader;
EFI_IMAGE_OPTIONAL_HEADER_UNION *ImgHdr;
UINT16 Index;
UINTN Size;
UINT16 NumberOfSections;
IMAGE_FILE_HANDLE *Handle;
UINT64 ValueInSectionHeader;
Status = EFI_NOT_FOUND;
//
// Get PeHeader pointer
//
Handle = (IMAGE_FILE_HANDLE*)ImageContext->Handle;
ImgHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)((CHAR8* )Handle->Source + ImageContext->PeCoffHeaderOffset);
SectionHeaderOffset = (UINTN)(
ImageContext->PeCoffHeaderOffset +
sizeof (UINT32) +
sizeof (EFI_IMAGE_FILE_HEADER) +
ImgHdr->Pe32.FileHeader.SizeOfOptionalHeader
);
NumberOfSections = ImgHdr->Pe32.FileHeader.NumberOfSections;
//
// Get base address from the first section header that doesn't point to code section.
//
for (Index = 0; Index < NumberOfSections; Index++) {
//
// Read section header from file
//
Size = sizeof (EFI_IMAGE_SECTION_HEADER);
Status = ImageContext->ImageRead (
ImageContext->Handle,
SectionHeaderOffset,
&Size,
&SectionHeader
);
if (EFI_ERROR (Status)) {
return Status;
}
Status = EFI_NOT_FOUND;
if ((SectionHeader.Characteristics & EFI_IMAGE_SCN_CNT_CODE) == 0) {
//
// Build tool will save the address in PointerToRelocations & PointerToLineNumbers fields in the first section header
// that doesn't point to code section in image header, as well as ImageBase field of image header. And there is an
// assumption that when the feature is enabled, if a module is assigned a loading address by tools, PointerToRelocations
// & PointerToLineNumbers fields should NOT be Zero, or else, these 2 fileds should be set to Zero
//
ValueInSectionHeader = ReadUnaligned64((UINT64*)&SectionHeader.PointerToRelocations);
if (ValueInSectionHeader != 0) {
//
// When the feature is configured as load module at fixed absolute address, the ImageAddress field of ImageContext
// hold the spcified address. If the feature is configured as load module at fixed offset, ImageAddress hold an offset
// relative to top address
//
if ((INT64)PcdGet64(PcdLoadModuleAtFixAddressEnable) < 0) {
ImageContext->ImageAddress = gLoadModuleAtFixAddressConfigurationTable.DxeCodeTopAddress + (INT64)ImageContext->ImageAddress;
}
//
// Check if the memory range is avaliable.
//
Status = CheckAndMarkFixLoadingMemoryUsageBitMap (ImageContext->ImageAddress, (UINTN)(ImageContext->ImageSize + ImageContext->SectionAlignment));
}
break;
}
SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);
}
DEBUG ((EFI_D_INFO|EFI_D_LOAD, "LOADING MODULE FIXED INFO: Loading module at fixed address %x. Status = %r \n", ImageContext->ImageAddress, Status));
return Status;
}
/**
Loads, relocates, and invokes a PE/COFF image
@@ -308,21 +475,43 @@ CoreLoadPeImage (
// no modules whose preferred load addresses are below 1MB.
//
Status = EFI_OUT_OF_RESOURCES;
if (Image->ImageContext.ImageAddress >= 0x100000 || Image->ImageContext.RelocationsStripped) {
Status = CoreAllocatePages (
AllocateAddress,
(EFI_MEMORY_TYPE) (Image->ImageContext.ImageCodeMemoryType),
Image->NumberOfPages,
&Image->ImageContext.ImageAddress
);
}
if (EFI_ERROR (Status) && !Image->ImageContext.RelocationsStripped) {
Status = CoreAllocatePages (
AllocateAnyPages,
(EFI_MEMORY_TYPE) (Image->ImageContext.ImageCodeMemoryType),
Image->NumberOfPages,
&Image->ImageContext.ImageAddress
);
//
// If Loading Module At Fixed Address feature is enabled, the module should be loaded to
// a specified address.
//
if (FixedPcdGet64(PcdLoadModuleAtFixAddressEnable) != 0 ) {
Status = GetPeCoffImageFixLoadingAssignedAddress (&(Image->ImageContext));
if (EFI_ERROR (Status)) {
//
// If the code memory is not ready, invoke CoreAllocatePage with AllocateAnyPages to load the driver.
//
DEBUG ((EFI_D_INFO|EFI_D_LOAD, "LOADING MODULE FIXED ERROR: Loading module at fixed address failed since specified memory is not available.\n"));
Status = CoreAllocatePages (
AllocateAnyPages,
(EFI_MEMORY_TYPE) (Image->ImageContext.ImageCodeMemoryType),
Image->NumberOfPages,
&Image->ImageContext.ImageAddress
);
}
} else {
if (Image->ImageContext.ImageAddress >= 0x100000 || Image->ImageContext.RelocationsStripped) {
Status = CoreAllocatePages (
AllocateAddress,
(EFI_MEMORY_TYPE) (Image->ImageContext.ImageCodeMemoryType),
Image->NumberOfPages,
&Image->ImageContext.ImageAddress
);
}
if (EFI_ERROR (Status) && !Image->ImageContext.RelocationsStripped) {
Status = CoreAllocatePages (
AllocateAnyPages,
(EFI_MEMORY_TYPE) (Image->ImageContext.ImageCodeMemoryType),
Image->NumberOfPages,
&Image->ImageContext.ImageAddress
);
}
}
if (EFI_ERROR (Status)) {
return Status;
@@ -355,9 +544,9 @@ CoreLoadPeImage (
Image->ImageBasePage = Image->ImageContext.ImageAddress;
if (!Image->ImageContext.IsTeImage) {
Image->ImageContext.ImageAddress =
(Image->ImageContext.ImageAddress + Image->ImageContext.SectionAlignment - 1) &
~((UINTN)Image->ImageContext.SectionAlignment - 1);
Image->ImageContext.ImageAddress =
(Image->ImageContext.ImageAddress + Image->ImageContext.SectionAlignment - 1) &
~((UINTN)Image->ImageContext.SectionAlignment - 1);
}
//