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/** @file
Copyright (c) 2008-2009, Apple Inc. All rights reserved.
All rights reserved. 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 <PrePi.h>
//
// Hack to work in NT32
//
EFI_STATUS
EFIAPI
SecWinNtPeiLoadFile (
IN VOID *Pe32Data,
IN EFI_PHYSICAL_ADDRESS *ImageAddress,
IN UINT64 *ImageSize,
IN EFI_PHYSICAL_ADDRESS *EntryPoint
);
EFI_STATUS
EFIAPI
LoadPeCoffImage (
IN VOID *PeCoffImage,
OUT EFI_PHYSICAL_ADDRESS *ImageAddress,
OUT UINT64 *ImageSize,
OUT EFI_PHYSICAL_ADDRESS *EntryPoint
)
{
RETURN_STATUS Status;
PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;
VOID *Buffer;
ZeroMem (&ImageContext, sizeof (ImageContext));
ImageContext.Handle = PeCoffImage;
ImageContext.ImageRead = PeCoffLoaderImageReadFromMemory;
Status = PeCoffLoaderGetImageInfo (&ImageContext);
ASSERT_EFI_ERROR (Status);
//
// Allocate Memory for the image
//
Buffer = AllocatePages (EFI_SIZE_TO_PAGES((UINT32)ImageContext.ImageSize));
ASSERT (Buffer != 0);
ImageContext.ImageAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)Buffer;
//
// Load the image to our new buffer
//
Status = PeCoffLoaderLoadImage (&ImageContext);
ASSERT_EFI_ERROR (Status);
//
// Relocate the image in our new buffer
//
Status = PeCoffLoaderRelocateImage (&ImageContext);
ASSERT_EFI_ERROR (Status);
*ImageAddress = ImageContext.ImageAddress;
*ImageSize = ImageContext.ImageSize;
*EntryPoint = ImageContext.EntryPoint;
//
// Flush not needed for all architectures. We could have a processor specific
// function in this library that does the no-op if needed.
//
InvalidateInstructionCacheRange ((VOID *)(UINTN)*ImageAddress, (UINTN)*ImageSize);
return Status;
}
typedef
VOID
(EFIAPI *DXE_CORE_ENTRY_POINT) (
IN VOID *HobStart
);
EFI_STATUS
EFIAPI
LoadDxeCoreFromFfsFile (
IN EFI_PEI_FILE_HANDLE FileHandle,
IN UINTN StackSize
)
{
EFI_STATUS Status;
VOID *PeCoffImage;
EFI_PHYSICAL_ADDRESS ImageAddress;
UINT64 ImageSize;
EFI_PHYSICAL_ADDRESS EntryPoint;
VOID *BaseOfStack;
VOID *TopOfStack;
VOID *Hob;
EFI_FV_FILE_INFO FvFileInfo;
Status = FfsFindSectionData (EFI_SECTION_PE32, FileHandle, &PeCoffImage);
if (EFI_ERROR (Status)) {
return Status;
}
Status = LoadPeCoffImage (PeCoffImage, &ImageAddress, &ImageSize, &EntryPoint);
// For NT32 Debug Status = SecWinNtPeiLoadFile (PeCoffImage, &ImageAddress, &ImageSize, &EntryPoint);
ASSERT_EFI_ERROR (Status);
//
// Extract the DxeCore GUID file name.
//
Status = FfsGetFileInfo (FileHandle, &FvFileInfo);
ASSERT_EFI_ERROR (Status);
BuildModuleHob (&FvFileInfo.FileName, (EFI_PHYSICAL_ADDRESS)(UINTN)ImageAddress, EFI_SIZE_TO_PAGES ((UINT32) ImageSize) * EFI_PAGE_SIZE, EntryPoint);
DEBUG ((EFI_D_INFO | EFI_D_LOAD, "Loading DxeCore at 0x%10p EntryPoint=0x%10p\n", (VOID *)(UINTN)ImageAddress, (VOID *)(UINTN)EntryPoint));
Hob = GetHobList ();
if (StackSize == 0) {
// User the current stack
((DXE_CORE_ENTRY_POINT)(UINTN)EntryPoint) (Hob);
} else {
//
// Allocate 128KB for the Stack
//
BaseOfStack = AllocatePages (EFI_SIZE_TO_PAGES (StackSize));
ASSERT (BaseOfStack != NULL);
//
// Compute the top of the stack we were allocated. Pre-allocate a UINTN
// for safety.
//
TopOfStack = (VOID *) ((UINTN) BaseOfStack + EFI_SIZE_TO_PAGES (StackSize) * EFI_PAGE_SIZE - CPU_STACK_ALIGNMENT);
TopOfStack = ALIGN_POINTER (TopOfStack, CPU_STACK_ALIGNMENT);
//
// Update the contents of BSP stack HOB to reflect the real stack info passed to DxeCore.
//
UpdateStackHob ((EFI_PHYSICAL_ADDRESS)(UINTN) BaseOfStack, StackSize);
SwitchStack (
(SWITCH_STACK_ENTRY_POINT)(UINTN)EntryPoint,
Hob,
NULL,
TopOfStack
);
}
// Should never get here as DXE Core does not return
DEBUG ((EFI_D_ERROR, "DxeCore returned\n"));
ASSERT (FALSE);
return EFI_DEVICE_ERROR;
}
EFI_STATUS
EFIAPI
LoadDxeCoreFromFv (
IN UINTN *FvInstance, OPTIONAL
IN UINTN StackSize
)
{
EFI_STATUS Status;
EFI_PEI_FV_HANDLE VolumeHandle;
EFI_PEI_FILE_HANDLE FileHandle = NULL;
if (FvInstance != NULL) {
//
// Caller passed in a specific FV to try, so only try that one
//
Status = FfsFindNextVolume (*FvInstance, &VolumeHandle);
if (!EFI_ERROR (Status)) {
Status = FfsFindNextFile (EFI_FV_FILETYPE_DXE_CORE, VolumeHandle, &FileHandle);
}
} else {
Status = FfsAnyFvFindFirstFile (EFI_FV_FILETYPE_DXE_CORE, &VolumeHandle, &FileHandle);
}
if (!EFI_ERROR (Status)) {
return LoadDxeCoreFromFfsFile (FileHandle, StackSize);
}
return Status;
}
EFI_STATUS
EFIAPI
DecompressFirstFv (
VOID
)
{
EFI_STATUS Status;
EFI_PEI_FV_HANDLE VolumeHandle;
EFI_PEI_FILE_HANDLE FileHandle;
Status = FfsAnyFvFindFirstFile (EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE, &VolumeHandle, &FileHandle);
if (!EFI_ERROR (Status)) {
Status = FfsProcessFvFile (FileHandle);
}
return Status;
}
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