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35 lines
1.3 KiB
C
35 lines
1.3 KiB
C
/** @file
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The EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL is related to EDK II-specific implementation
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and used to abstract the swap operation of boot block and backup block of FV in EFI
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SMM environment. This swap is especially needed when updating the boot block of FV.
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If a power failure happens during the boot block update, the swapped backup block
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(now the boot block) can boot the machine with the old boot block backed up in it.
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The swap operation is platform dependent, so other protocols such as SMM FTW (Fault
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Tolerant Write) should use this protocol instead of handling hardware directly.
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Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __SMM_SWAP_ADDRESS_RANGE_H__
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#define __SMM_SWAP_ADDRESS_RANGE_H__
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#include <Protocol/SwapAddressRange.h>
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#define EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL_GUID \
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{ \
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0x67c4f112, 0x3385, 0x4e55, { 0x9c, 0x5b, 0xc0, 0x5b, 0x71, 0x7c, 0x42, 0x28 } \
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}
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//
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// SMM Swap Address Range protocol structure is the same as Swap Address Range protocol.
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// The SMM one is intend to run in SMM environment, which means it can be used by
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// SMM drivers after ExitPmAuth.
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//
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typedef EFI_SWAP_ADDRESS_RANGE_PROTOCOL EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL;
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extern EFI_GUID gEfiSmmSwapAddressRangeProtocolGuid;
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#endif
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