On Mon, Mar 13, 2023 at 18:20:20 +0100, Ard Biesheuvel wrote:
> On Mon, 13 Mar 2023 at 15:50, Leif Lindholm <quic_llind...@quicinc.com> wrote:
> >
> > No objection as such, but do we know what it was ever used for?
> >
> > /
> > Leif
> >
>
> From edk2-platforms (see below). The reason was probably to avoid
> having two copies of that code in the firmware binary.
Got it, thanks.
Reviewed-by: Leif Lindholm <quic_llind...@quicinc.com>
>
>
> commit b7505f9c27f11064373ce3359ec312f48b265643
> Author: Ard Biesheuvel <a...@kernel.org>
> Date: Sun Feb 12 23:50:39 2023 +0100
>
> Platform/BeagleBoard: Drop PeCoff protocol
>
> BeagleBoard is the only user of the so-called 'PE/COFF protocol', which
> just exposes the PE/COFF loader library API via a protocol, presumably
> to avoid duplicating this code in the PrePi SEC component as well as the
> DXE core.
>
> This is a rather questionable practice, and it would be better to drop
> this code so we can remove it from the EDK2 main repo as well.
>
> Signed-off-by: Ard Biesheuvel <a...@kernel.org>
> Reviewed-by: Leif Lindholm <quic_llind...@quicinc.com>
>
>
> > On Mon, Mar 13, 2023 at 14:45:17 +0100, Ard Biesheuvel wrote:
> > > Signed-off-by: Ard Biesheuvel <a...@kernel.org>
> > > ---
> > > EmbeddedPkg/EmbeddedPkg.dec | 1 -
> > > EmbeddedPkg/Include/Library/PrePiLib.h | 6 -
> > > EmbeddedPkg/Include/Protocol/PeCoffLoader.h | 220 --------------------
> > > EmbeddedPkg/Library/PrePiHobLib/Hob.c | 22 --
> > > EmbeddedPkg/Library/PrePiLib/PrePiLib.inf | 4 -
> > > 5 files changed, 253 deletions(-)
> > > delete mode 100644 EmbeddedPkg/Include/Protocol/PeCoffLoader.h
> > >
> > > diff --git a/EmbeddedPkg/EmbeddedPkg.dec b/EmbeddedPkg/EmbeddedPkg.dec
> > > index 341ef5e6a679..010af91bed65 100644
> > > --- a/EmbeddedPkg/EmbeddedPkg.dec
> > > +++ b/EmbeddedPkg/EmbeddedPkg.dec
> > > @@ -78,7 +78,6 @@ [Protocols.common]
> > > gEmbeddedDeviceGuid = { 0xbf4b9d10, 0x13ec, 0x43dd, { 0x88, 0x80,
> > > 0xe9, 0xb, 0x71, 0x8f, 0x27, 0xde } }
> > > gEmbeddedExternalDeviceProtocolGuid = { 0x735F8C64, 0xD696, 0x44D0, {
> > > 0xBD, 0xF2, 0x44, 0x7F, 0xD0, 0x5A, 0x54, 0x06 }}
> > > gEmbeddedGpioProtocolGuid = { 0x17a0a3d7, 0xc0a5, 0x4635, {
> > > 0xbb, 0xd5, 0x07, 0x21, 0x87, 0xdf, 0xe2, 0xee }}
> > > - gPeCoffLoaderProtocolGuid = { 0xB323179B, 0x97FB, 0x477E, { 0xB0,
> > > 0xFE, 0xD8, 0x85, 0x91, 0xFA, 0x11, 0xAB } }
> > > gEmbeddedMmcHostProtocolGuid = { 0x3e591c00, 0x9e4a, 0x11df,
> > > {0x92, 0x44, 0x00, 0x02, 0xA5, 0xD5, 0xC5, 0x1B }}
> > > gAndroidFastbootTransportProtocolGuid = { 0x74bd9fe0, 0x8902, 0x11e3,
> > > {0xb9, 0xd3, 0xf7, 0x22, 0x38, 0xfc, 0x9a, 0x31}}
> > > gAndroidFastbootPlatformProtocolGuid = { 0x524685a0, 0x89a0, 0x11e3,
> > > {0x9d, 0x4d, 0xbf, 0xa9, 0xf6, 0xa4, 0x03, 0x08}}
> > > diff --git a/EmbeddedPkg/Include/Library/PrePiLib.h
> > > b/EmbeddedPkg/Include/Library/PrePiLib.h
> > > index 14f2bbc38dae..eb4bcec30fa1 100644
> > > --- a/EmbeddedPkg/Include/Library/PrePiLib.h
> > > +++ b/EmbeddedPkg/Include/Library/PrePiLib.h
> > > @@ -673,12 +673,6 @@ BuildExtractSectionHob (
> > > IN EXTRACT_GUIDED_SECTION_DECODE_HANDLER SectionExtraction
> > > );
> > >
> > > -VOID
> > > -EFIAPI
> > > -BuildPeCoffLoaderHob (
> > > - VOID
> > > - );
> > > -
> > > /**
> > > Allocates one or more 4KB pages of type EfiBootServicesData.
> > >
> > > diff --git a/EmbeddedPkg/Include/Protocol/PeCoffLoader.h
> > > b/EmbeddedPkg/Include/Protocol/PeCoffLoader.h
> > > deleted file mode 100644
> > > index 08738e99276a..000000000000
> > > --- a/EmbeddedPkg/Include/Protocol/PeCoffLoader.h
> > > +++ /dev/null
> > > @@ -1,220 +0,0 @@
> > > -/** @file
> > > -
> > > - Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
> > > - Portions copyright (c) 2010, Apple Inc. All rights reserved.<BR>
> > > - SPDX-License-Identifier: BSD-2-Clause-Patent
> > > -
> > > -**/
> > > -
> > > -#ifndef __PE_COFF_LOADER_H__
> > > -#define __PE_COFF_LOADER_H__
> > > -
> > > -// Needed for PE_COFF_LOADER_IMAGE_CONTEXT
> > > -#include <Library/PeCoffLib.h>
> > > -
> > > -// B323179B-97FB-477E-B0FE-D88591FA11AB
> > > -#define PE_COFF_LOADER_PROTOCOL_GUID \
> > > - { 0xB323179B, 0x97FB, 0x477E, { 0xB0, 0xFE, 0xD8, 0x85, 0x91, 0xFA,
> > > 0x11, 0xAB } }
> > > -
> > > -typedef struct _PE_COFF_LOADER_PROTOCOL PE_COFF_LOADER_PROTOCOL;
> > > -
> > > -/**
> > > - Retrieves information about a PE/COFF image.
> > > -
> > > - Computes the PeCoffHeaderOffset, IsTeImage, ImageType, ImageAddress,
> > > ImageSize,
> > > - DestinationAddress, RelocationsStripped, SectionAlignment,
> > > SizeOfHeaders, and
> > > - DebugDirectoryEntryRva fields of the ImageContext structure.
> > > - If ImageContext is NULL, then return RETURN_INVALID_PARAMETER.
> > > - If the PE/COFF image accessed through the ImageRead service in the
> > > ImageContext
> > > - structure is not a supported PE/COFF image type, then return
> > > RETURN_UNSUPPORTED.
> > > - If any errors occur while computing the fields of ImageContext,
> > > - then the error status is returned in the ImageError field of
> > > ImageContext.
> > > - If the image is a TE image, then SectionAlignment is set to 0.
> > > - The ImageRead and Handle fields of ImageContext structure must be
> > > valid prior
> > > - to invoking this service.
> > > -
> > > - @param ImageContext Pointer to the image context
> > > structure that describes the PE/COFF
> > > - image that needs to be examined by
> > > this function.
> > > -
> > > - @retval RETURN_SUCCESS The information on the PE/COFF image
> > > was collected.
> > > - @retval RETURN_INVALID_PARAMETER ImageContext is NULL.
> > > - @retval RETURN_UNSUPPORTED The PE/COFF image is not supported.
> > > -
> > > -**/
> > > -typedef
> > > -RETURN_STATUS
> > > -(EFIAPI *PE_COFF_LOADER_GET_IMAGE_INFO)(
> > > - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
> > > - );
> > > -
> > > -/**
> > > - Applies relocation fixups to a PE/COFF image that was loaded with
> > > PeCoffLoaderLoadImage().
> > > -
> > > - If the DestinationAddress field of ImageContext is 0, then use the
> > > ImageAddress field of
> > > - ImageContext as the relocation base address. Otherwise, use the
> > > DestinationAddress field
> > > - of ImageContext as the relocation base address. The caller must
> > > allocate the relocation
> > > - fixup log buffer and fill in the FixupData field of ImageContext prior
> > > to calling this function.
> > > -
> > > - The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine,
> > > ImageType, ImageAddress,
> > > - ImageSize, DestinationAddress, RelocationsStripped, SectionAlignment,
> > > SizeOfHeaders,
> > > - DebugDirectoryEntryRva, EntryPoint, FixupDataSize, CodeView,
> > > PdbPointer, and FixupData of
> > > - the ImageContext structure must be valid prior to invoking this
> > > service.
> > > -
> > > - If ImageContext is NULL, then ASSERT().
> > > -
> > > - Note that if the platform does not maintain coherency between the
> > > instruction cache(s) and the data
> > > - cache(s) in hardware, then the caller is responsible for performing
> > > cache maintenance operations
> > > - prior to transferring control to a PE/COFF image that is loaded using
> > > this library.
> > > -
> > > - @param ImageContext Pointer to the image context structure
> > > that describes the PE/COFF
> > > - image that is being relocated.
> > > -
> > > - @retval RETURN_SUCCESS The PE/COFF image was relocated.
> > > - Extended status information is in the
> > > ImageError field of ImageContext.
> > > - @retval RETURN_LOAD_ERROR The image in not a valid PE/COFF image.
> > > - Extended status information is in the
> > > ImageError field of ImageContext.
> > > - @retval RETURN_UNSUPPORTED A relocation record type is not supported.
> > > - Extended status information is in the
> > > ImageError field of ImageContext.
> > > -
> > > -**/
> > > -typedef
> > > -RETURN_STATUS
> > > -(EFIAPI *PE_COFF_LOADER_RELOCATE_IMAGE)(
> > > - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
> > > - );
> > > -
> > > -/**
> > > - Loads a PE/COFF image into memory.
> > > -
> > > - Loads the PE/COFF image accessed through the ImageRead service of
> > > ImageContext into the buffer
> > > - specified by the ImageAddress and ImageSize fields of ImageContext.
> > > The caller must allocate
> > > - the load buffer and fill in the ImageAddress and ImageSize fields
> > > prior to calling this function.
> > > - The EntryPoint, FixupDataSize, CodeView, PdbPointer and
> > > HiiResourceData fields of ImageContext are computed.
> > > - The ImageRead, Handle, PeCoffHeaderOffset, IsTeImage, Machine,
> > > ImageType, ImageAddress, ImageSize,
> > > - DestinationAddress, RelocationsStripped, SectionAlignment,
> > > SizeOfHeaders, and DebugDirectoryEntryRva
> > > - fields of the ImageContext structure must be valid prior to invoking
> > > this service.
> > > -
> > > - If ImageContext is NULL, then ASSERT().
> > > -
> > > - Note that if the platform does not maintain coherency between the
> > > instruction cache(s) and the data
> > > - cache(s) in hardware, then the caller is responsible for performing
> > > cache maintenance operations
> > > - prior to transferring control to a PE/COFF image that is loaded using
> > > this library.
> > > -
> > > - @param ImageContext Pointer to the image context
> > > structure that describes the PE/COFF
> > > - image that is being loaded.
> > > -
> > > - @retval RETURN_SUCCESS The PE/COFF image was loaded into
> > > the buffer specified by
> > > - the ImageAddress and ImageSize
> > > fields of ImageContext.
> > > - Extended status information is in
> > > the ImageError field of ImageContext.
> > > - @retval RETURN_BUFFER_TOO_SMALL The caller did not provide a large
> > > enough buffer.
> > > - Extended status information is in
> > > the ImageError field of ImageContext.
> > > - @retval RETURN_LOAD_ERROR The PE/COFF image is an EFI Runtime
> > > image with no relocations.
> > > - Extended status information is in
> > > the ImageError field of ImageContext.
> > > - @retval RETURN_INVALID_PARAMETER The image address is invalid.
> > > - Extended status information is in
> > > the ImageError field of ImageContext.
> > > -
> > > -**/
> > > -typedef
> > > -RETURN_STATUS
> > > -(EFIAPI *PE_COFF_LOADER_LOAD_IMAGE)(
> > > - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
> > > - );
> > > -
> > > -/**
> > > - Reads contents of a PE/COFF image from a buffer in system memory.
> > > -
> > > - This is the default implementation of a PE_COFF_LOADER_READ_FILE
> > > function
> > > - that assumes FileHandle pointer to the beginning of a PE/COFF image.
> > > - This function reads contents of the PE/COFF image that starts at the
> > > system memory
> > > - address specified by FileHandle. The read operation copies ReadSize
> > > bytes from the
> > > - PE/COFF image starting at byte offset FileOffset into the buffer
> > > specified by Buffer.
> > > - The size of the buffer actually read is returned in ReadSize.
> > > -
> > > - If FileHandle is NULL, then ASSERT().
> > > - If ReadSize is NULL, then ASSERT().
> > > - If Buffer is NULL, then ASSERT().
> > > -
> > > - @param FileHandle Pointer to base of the input stream
> > > - @param FileOffset Offset into the PE/COFF image to begin the
> > > read operation.
> > > - @param ReadSize On input, the size in bytes of the requested
> > > read operation.
> > > - On output, the number of bytes actually read.
> > > - @param Buffer Output buffer that contains the data read
> > > from the PE/COFF image.
> > > -
> > > - @retval RETURN_SUCCESS Data is read from FileOffset from the Handle
> > > into
> > > - the buffer.
> > > -**/
> > > -typedef
> > > -RETURN_STATUS
> > > -(EFIAPI *PE_COFF_LOADER_READ_FROM_MEMORY)(
> > > - IN VOID *FileHandle,
> > > - IN UINTN FileOffset,
> > > - IN OUT UINTN *ReadSize,
> > > - OUT VOID *Buffer
> > > - );
> > > -
> > > -/**
> > > - Reapply fixups on a fixed up PE32/PE32+ image to allow virtual calling
> > > at EFI
> > > - runtime.
> > > -
> > > - This function reapplies relocation fixups to the PE/COFF image
> > > specified by ImageBase
> > > - and ImageSize so the image will execute correctly when the PE/COFF
> > > image is mapped
> > > - to the address specified by VirtualImageBase. RelocationData must be
> > > identical
> > > - to the FixupData buffer from the PE_COFF_LOADER_IMAGE_CONTEXT structure
> > > - after this PE/COFF image was relocated with
> > > PeCoffLoaderRelocateImage().
> > > -
> > > - Note that if the platform does not maintain coherency between the
> > > instruction cache(s) and the data
> > > - cache(s) in hardware, then the caller is responsible for performing
> > > cache maintenance operations
> > > - prior to transferring control to a PE/COFF image that is loaded using
> > > this library.
> > > -
> > > - @param ImageBase Base address of a PE/COFF image that has
> > > been loaded
> > > - and relocated into system memory.
> > > - @param VirtImageBase The request virtual address that the
> > > PE/COFF image is to
> > > - be fixed up for.
> > > - @param ImageSize The size, in bytes, of the PE/COFF image.
> > > - @param RelocationData A pointer to the relocation data that was
> > > collected when the PE/COFF
> > > - image was relocated using
> > > PeCoffLoaderRelocateImage().
> > > -
> > > -**/
> > > -typedef
> > > -VOID
> > > -(EFIAPI *PE_COFF_LOADER_RELOCATE_IMAGE_FOR_RUNTIME)(
> > > - IN PHYSICAL_ADDRESS ImageBase,
> > > - IN PHYSICAL_ADDRESS VirtImageBase,
> > > - IN UINTN ImageSize,
> > > - IN VOID *RelocationData
> > > - );
> > > -
> > > -/**
> > > - Unloads a loaded PE/COFF image from memory and releases its taken
> > > resource.
> > > - Releases any environment specific resources that were allocated when
> > > the image
> > > - specified by ImageContext was loaded using PeCoffLoaderLoadImage().
> > > -
> > > - For NT32 emulator, the PE/COFF image loaded by system needs to release.
> > > - For real platform, the PE/COFF image loaded by Core doesn't needs to
> > > be unloaded,
> > > - this function can simply return RETURN_SUCCESS.
> > > -
> > > - If ImageContext is NULL, then ASSERT().
> > > -
> > > - @param ImageContext Pointer to the image context
> > > structure that describes the PE/COFF
> > > - image to be unloaded.
> > > -
> > > - @retval RETURN_SUCCESS The PE/COFF image was unloaded
> > > successfully.
> > > -**/
> > > -typedef
> > > -RETURN_STATUS
> > > -(EFIAPI *PE_COFF_LOADER_UNLOAD_IMAGE)(
> > > - IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
> > > - );
> > > -
> > > -struct _PE_COFF_LOADER_PROTOCOL {
> > > - PE_COFF_LOADER_GET_IMAGE_INFO GetImageInfo;
> > > - PE_COFF_LOADER_LOAD_IMAGE LoadImage;
> > > - PE_COFF_LOADER_RELOCATE_IMAGE RelocateImage;
> > > - PE_COFF_LOADER_READ_FROM_MEMORY ReadFromMemory;
> > > - PE_COFF_LOADER_RELOCATE_IMAGE_FOR_RUNTIME RelocateImageForRuntime;
> > > - PE_COFF_LOADER_UNLOAD_IMAGE UnloadImage;
> > > -};
> > > -
> > > -extern EFI_GUID gPeCoffLoaderProtocolGuid;
> > > -
> > > -#endif
> > > diff --git a/EmbeddedPkg/Library/PrePiHobLib/Hob.c
> > > b/EmbeddedPkg/Library/PrePiHobLib/Hob.c
> > > index 8eb175aa96f9..a43383b510d8 100644
> > > --- a/EmbeddedPkg/Library/PrePiHobLib/Hob.c
> > > +++ b/EmbeddedPkg/Library/PrePiHobLib/Hob.c
> > > @@ -17,7 +17,6 @@
> > > #include <Library/PcdLib.h>
> > > #include <Library/PrePiHobListPointerLib.h>
> > >
> > > -#include <Protocol/PeCoffLoader.h>
> > > #include <Guid/ExtractSection.h>
> > > #include <Guid/MemoryTypeInformation.h>
> > > #include <Guid/MemoryAllocationHob.h>
> > > @@ -782,27 +781,6 @@ BuildExtractSectionHob (
> > > BuildGuidDataHob (Guid, &Data, sizeof (Data));
> > > }
> > >
> > > -PE_COFF_LOADER_PROTOCOL gPeCoffProtocol = {
> > > - PeCoffLoaderGetImageInfo,
> > > - PeCoffLoaderLoadImage,
> > > - PeCoffLoaderRelocateImage,
> > > - PeCoffLoaderImageReadFromMemory,
> > > - PeCoffLoaderRelocateImageForRuntime,
> > > - PeCoffLoaderUnloadImage
> > > -};
> > > -
> > > -VOID
> > > -EFIAPI
> > > -BuildPeCoffLoaderHob (
> > > - VOID
> > > - )
> > > -{
> > > - VOID *Ptr;
> > > -
> > > - Ptr = &gPeCoffProtocol;
> > > - BuildGuidDataHob (&gPeCoffLoaderProtocolGuid, &Ptr, sizeof (VOID *));
> > > -}
> > > -
> > > // May want to put this into a library so you only need the PCD settings
> > > if you are using the feature?
> > > VOID
> > > BuildMemoryTypeInformationHob (
> > > diff --git a/EmbeddedPkg/Library/PrePiLib/PrePiLib.inf
> > > b/EmbeddedPkg/Library/PrePiLib/PrePiLib.inf
> > > index 2df5928c51d5..f7f3880f331c 100644
> > > --- a/EmbeddedPkg/Library/PrePiLib/PrePiLib.inf
> > > +++ b/EmbeddedPkg/Library/PrePiLib/PrePiLib.inf
> > > @@ -65,10 +65,6 @@ [LibraryClasses.ARM, LibraryClasses.AARCH64]
> > > [Guids]
> > > gEfiMemoryTypeInformationGuid
> > >
> > > -[Protocols]
> > > - gPeCoffLoaderProtocolGuid
> > > -
> > > -
> > > [FixedPcd.common]
> > > gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiACPIReclaimMemory
> > > gEmbeddedTokenSpaceGuid.PcdMemoryTypeEfiACPIMemoryNVS
> > > --
> > > 2.39.2
> > >
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