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MdeModulePkg/PeiCore: allocate BootServicesCode memory for PE/COFF images 

Ensure that any memory allocated for PE/COFF images is identifiable as
a boot services code region, so that we know it requires its executable
permissions to be preserved when we tighten mapping permissions later on.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
This commit is contained in:
Ard Biesheuvel 2017-02-23 09:57:03 +00:00
parent 3b44bb5527
commit a0ffd7a9ee
1 changed files with 14 additions and 9 deletions
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23
MdeModulePkg/Core/Pei/Image/Image.c
View File

@ -112,11 +112,12 @@ GetImageReadFunction (
IN PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
)
{
PEI_CORE_INSTANCE *Private;
VOID* MemoryBuffer;
PEI_CORE_INSTANCE *Private;
EFI_PHYSICAL_ADDRESS MemoryBuffer;
Private = PEI_CORE_INSTANCE_FROM_PS_THIS (GetPeiServicesTablePointer ());
MemoryBuffer = 0;
if (Private->PeiMemoryInstalled && (((Private->HobList.HandoffInformationTable->BootMode != BOOT_ON_S3_RESUME) && PcdGetBool (PcdShadowPeimOnBoot)) ||
((Private->HobList.HandoffInformationTable->BootMode == BOOT_ON_S3_RESUME) && PcdGetBool (PcdShadowPeimOnS3Boot))) &&
(EFI_IMAGE_MACHINE_TYPE_SUPPORTED(EFI_IMAGE_MACHINE_X64) || EFI_IMAGE_MACHINE_TYPE_SUPPORTED(EFI_IMAGE_MACHINE_IA32))) {
@ -125,9 +126,9 @@ GetImageReadFunction (
// compilers that have been tested
//
if (Private->ShadowedImageRead == NULL) {
MemoryBuffer = AllocatePages (0x400 / EFI_PAGE_SIZE + 1);
ASSERT (MemoryBuffer != NULL);
CopyMem (MemoryBuffer, (CONST VOID *) (UINTN) PeiImageReadForShadow, 0x400);
PeiServicesAllocatePages (EfiBootServicesCode, 0x400 / EFI_PAGE_SIZE + 1, &MemoryBuffer);
ASSERT (MemoryBuffer != 0);
CopyMem ((VOID *)(UINTN)MemoryBuffer, (CONST VOID *) (UINTN) PeiImageReadForShadow, 0x400);
Private->ShadowedImageRead = (PE_COFF_LOADER_READ_FILE) (UINTN) MemoryBuffer;
}
@ -453,12 +454,16 @@ LoadAndRelocatePeCoffImage (
//
// The PEIM is not assiged valid address, try to allocate page to load it.
//
ImageContext.ImageAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) AllocatePages (EFI_SIZE_TO_PAGES ((UINT32) AlignImageSize));
Status = PeiServicesAllocatePages (EfiBootServicesCode,
EFI_SIZE_TO_PAGES ((UINT32) AlignImageSize),
&ImageContext.ImageAddress);
}
} else {
ImageContext.ImageAddress = (EFI_PHYSICAL_ADDRESS)(UINTN) AllocatePages (EFI_SIZE_TO_PAGES ((UINT32) AlignImageSize));
Status = PeiServicesAllocatePages (EfiBootServicesCode,
EFI_SIZE_TO_PAGES ((UINT32) AlignImageSize),
&ImageContext.ImageAddress);
}
if (ImageContext.ImageAddress != 0) {
if (!EFI_ERROR (Status)) {
//
// Adjust the Image Address to make sure it is section alignment.
//