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MdePkg: Introduce DT_FIXUP protocol

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Proposed by heinrich.schuchardt@canonical.com:
https://github.com/U-Boot-EFI/EFI_DT_FIXUP_PROTOCOL

Co-authored-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Signed-off-by: Dmitrii Merkurev <dimorinny@google.com>
This commit is contained in:
Dmitrii Merkurev 2026-05-24 14:09:32 +00:00 • committed by mergify[bot]
parent f98a523295
commit 95d38da6c6
2 changed files with 45 additions and 0 deletions
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42
MdePkg/Include/Protocol/DtFixup.h Normal file
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@ -0,0 +1,42 @@
/** @file
Device Tree Fixup Protocol.
Modifies a device tree in memory to align it with the firmware's view of
the platform.
Specification:
https://github.com/U-Boot-EFI/EFI_DT_FIXUP_PROTOCOL
Copyright (c) 2025, Heinrich Schuchardt.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#pragma once
#include <Uefi/UefiBaseType.h>
//
// {60ed6ba9-dfef-4799-ac7b-75e0f833456c}
//
#define DT_FIXUP_PROTOCOL_GUID \
{ 0x60ed6ba9, 0xdfef, 0x4799, { 0xac, 0x7b, 0x75, 0xe0, 0xf8, 0x33, 0x45, 0x6c } }
#define DT_FIXUP_PROTOCOL_REVISION 0x00010000
typedef struct _DT_FIXUP_PROTOCOL DT_FIXUP_PROTOCOL;
typedef
EFI_STATUS
(EFIAPI *DT_FIXUP)(
IN DT_FIXUP_PROTOCOL *This,
IN OUT VOID *Fdt,
IN OUT UINTN *BufferSize
);
struct _DT_FIXUP_PROTOCOL {
UINT64 Revision;
DT_FIXUP Fixup;
};
extern EFI_GUID gDtFixupProtocolGuid;

3
MdePkg/MdePkg.dec
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@ -1159,6 +1159,9 @@
## Include/Protocol/CcMeasurement.h
gEfiCcMeasurementProtocolGuid = { 0x96751a3d, 0x72f4, 0x41a6, { 0xa7, 0x94, 0xed, 0x5d, 0x0e, 0x67, 0xae, 0x6b }}
## Include/Protocol/DtFixup.h
gDtFixupProtocolGuid = { 0x60ed6ba9, 0xdfef, 0x4799, { 0xac, 0x7b, 0x75, 0xe0, 0xf8, 0x33, 0x45, 0x6c }}
#
# Protocols defined in PI1.0.
#