d55cfdc51f
This is the UEFI counterpart to my Linux series which generalizes
mixed mode support into a feature that requires very little internal
knowledge about the architecture specifics of booting Linux on the
part of the bootloader or firmware.
Instead, we add a .compat PE/COFF header containing an array of
PE_COMPAT nodes containing <machine type, entrypoint> tuples that
describe alternate entrypoints into the image for different native
machine types, e.g., IA-32 in a 64-bit image so it can be booted
from IA-32 firmware.
This patch implements the PE/COFF emulator protocol to take this new
section into account, so that such images can simply be loaded via
LoadImage/StartImage, e.g., straight from the shell.
This feature is based on the EDK2 specific PE/COFF emulator protocol
that was introduced in commit 57df17fe26 ("MdeModulePkg/DxeCore:
invoke the emulator protocol for foreign images", 2019-04-14).
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2564
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
38 lines
881 B
INI
38 lines
881 B
INI
## @file
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# PE/COFF emulator protocol implementation to start Linux kernel
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# images from non-native firmware
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#
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# Copyright (c) 2020, ARM Ltd. All rights reserved.<BR>
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#
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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#
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##
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[Defines]
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INF_VERSION = 1.27
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BASE_NAME = CompatImageLoaderDxe
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FILE_GUID = 1019f54a-2560-41b2-87b0-6750b98f3eff
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MODULE_TYPE = DXE_DRIVER
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VERSION_STRING = 1.0
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ENTRY_POINT = CompatImageLoaderDxeEntryPoint
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[Sources]
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CompatImageLoaderDxe.c
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[Packages]
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MdePkg/MdePkg.dec
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MdeModulePkg/MdeModulePkg.dec
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[LibraryClasses]
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BaseMemoryLib
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DebugLib
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PeCoffLib
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UefiBootServicesTableLib
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UefiDriverEntryPoint
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[Protocols]
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gEdkiiPeCoffImageEmulatorProtocolGuid ## PRODUCES
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[Depex]
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TRUE
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