SmmSwapAddressRange.h File Reference

Macros
#define	EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL_GUID

Typedefs
typedef EFI_SWAP_ADDRESS_RANGE_PROTOCOL	EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL

Variables
EFI_GUID	gEfiSmmSwapAddressRangeProtocolGuid

Detailed Description

The EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL is related to EDK II-specific implementation and used to abstract the swap operation of boot block and backup block of FV in EFI SMM environment. This swap is especially needed when updating the boot block of FV. If a power failure happens during the boot block update, the swapped backup block (now the boot block) can boot the machine with the old boot block backed up in it. The swap operation is platform dependent, so other protocols such as SMM FTW (Fault Tolerant Write) should use this protocol instead of handling hardware directly.

Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Macro Definition Documentation

#define EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL_GUID

Value:

{ \
    0x67c4f112, 0x3385, 0x4e55, { 0x9c, 0x5b, 0xc0, 0x5b, 0x71, 0x7c, 0x42, 0x28 } \
  }

Typedef Documentation

typedef EFI_SWAP_ADDRESS_RANGE_PROTOCOL EFI_SMM_SWAP_ADDRESS_RANGE_PROTOCOL

Variable Documentation

EFI_GUID gEfiSmmSwapAddressRangeProtocolGuid