UefiPayloadPkg/Include/Guid/SpiFlashInfoGuid.h

   1 /** @file
   2   This file defines the hob structure for the SPI flash variable info.
   3
   4   Copyright (c) 2017 - 2021, Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #ifndef SPI_FLASH_INFO_GUID_H_
  10 #define SPI_FLASH_INFO_GUID_H_
  11
  12 #include <IndustryStandard/Acpi.h>
  13 //
  14 // SPI Flash infor hob GUID
  15 //
  16 extern EFI_GUID gSpiFlashInfoGuid;
  17
  18 //
  19 // Set this bit if platform need disable SMM write protection when writing flash
  20 // in SMM mode using this method:  -- AsmWriteMsr32 (0x1FE, MmioRead32 (0xFED30880) | BIT0);
  21 //
  22 #define FLAGS_SPI_DISABLE_SMM_WRITE_PROTECT     BIT0
  23
  24 //
  25 // Reuse ACPI definition
  26 //
  27 typedef EFI_ACPI_3_0_GENERIC_ADDRESS_STRUCTURE PLD_GENERIC_ADDRESS;
  28 #define SPACE_ID_PCI_CONFIGURATION              EFI_ACPI_3_0_PCI_CONFIGURATION_SPACE
  29 #define REGISTER_BIT_WIDTH_DWORD                EFI_ACPI_3_0_DWORD
  30
  31 typedef struct {
  32   UINT8                        Revision;
  33   UINT8                        Reserved;
  34   UINT16                       Flags;
  35   PLD_GENERIC_ADDRESS          SpiAddress;
  36 } SPI_FLASH_INFO;
  37
  38 #endif