MdeModulePkg/Include/Guid/CapsuleVendor.h

/** @file
  This file defines:
  * the capsule vendor GUID for capsule variables and the HOB.
  * the capsule variable name.
  * the capsule GUID HOB data structure.
  The capsule HOB and variable can be used to store the capsule image start address and length.
  They are used by EDKII implementation of capsule update across a system reset.

  @par Note: EDKII implementation of capsule updating has discarded this capsule GUID HOB data
             structure and used one UEFI Capsule HOB (defined in PI Specification 1.2) instead.

Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef __EFI_CAPSULE_VENDOR_GUID_H__
#define __EFI_CAPSULE_VENDOR_GUID_H__

///
/// This guid is used as a variable GUID for the capsule variable
/// if the capsule pointer is passed through reset via a variable.
///
/// This guid is also used as a hob GUID for the capsule data
/// when the capsule pointer is passed from PEI phase to DXE phase.
///
#define EFI_CAPSULE_VENDOR_GUID  \
  { 0x711C703F, 0xC285, 0x4B10, { 0xA3, 0xB0, 0x36, 0xEC, 0xBD, 0x3C, 0x8B, 0xE2 } }

///
/// Name of capsule variable.
///
#define EFI_CAPSULE_VARIABLE_NAME  L"CapsuleUpdateData"

///
/// The data structure of the capsule guid hob entry.
/// Note: EDKII implementation has discarded this structure and used
///       UEFI_CAPSULE_HOB instead.
///
typedef struct {
  EFI_PHYSICAL_ADDRESS    BaseAddress; ///< Capsule data start address.
  UINT32                  Length;      ///< Length of capsule data.
} CAPSULE_HOB_INFO;

//
// The variable describes the long mode buffer used by IA32 Capsule PEIM
// to call X64 CapsuleCoalesce code to handle >4GB capsule blocks.
//
#define EFI_CAPSULE_LONG_MODE_BUFFER_NAME  L"CapsuleLongModeBuffer"

typedef struct {
  EFI_PHYSICAL_ADDRESS    PageTableAddress;
  EFI_PHYSICAL_ADDRESS    StackBaseAddress;
  UINT64                  StackSize;
} EFI_CAPSULE_LONG_MODE_BUFFER;

extern EFI_GUID  gEfiCapsuleVendorGuid;

#endif // #ifndef _EFI_CAPSULE_VENDOR_GUID_H_