2 Defines a Tag GUID used to mark a UEFI legacy BIOS thunk driver based
3 on legacy BIOS services and legacy option ROM. This Tag GUID must be installed on
4 the ImageHandle of any module that follows the EFI Driver Model and uses
5 the Int86() or FarCall() services of the Legacy Bios Protocol to produce
6 a standard UEFI I/O Protocol.
8 Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
10 SPDX-License-Identifier: BSD-2-Clause-Patent
14 #ifndef _LEGACY_BIOS_H_
15 #define _LEGACY_BIOS_H_
18 /// The Global ID for the Legacy BIOS GUID that must be installed onto the ImageHandle
19 /// of any module follows the EFI Driver Model and uses the Int86() or FarCall()
20 /// services of the Legacy BIOS Protocol to produce a standard UEFI I/O Protocol.
22 #define EFI_LEGACY_BIOS_GUID \
24 0x2e3044ac, 0x879f, 0x490f, {0x97, 0x60, 0xbb, 0xdf, 0xaf, 0x69, 0x5f, 0x50 } \
27 extern EFI_GUID gEfiLegacyBiosGuid
;