From a0ffd7a9ee575615ad5fd0777825b5362a16b49f Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Thu, 23 Feb 2017 09:57:03 +0000 Subject: [PATCH] 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 Reviewed-by: Jiewen Yao Reviewed-by: Liming Gao --- MdeModulePkg/Core/Pei/Image/Image.c | 23 ++++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-) diff --git a/MdeModulePkg/Core/Pei/Image/Image.c b/MdeModulePkg/Core/Pei/Image/Image.c index d659de8b3e..68e40c027e 100644 --- a/MdeModulePkg/Core/Pei/Image/Image.c +++ b/MdeModulePkg/Core/Pei/Image/Image.c @@ -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. // -- 2.39.2