MdePkg/Include/Guid/LinuxEfiInitrdMedia.h

   1 /** @file
   2   GUID definition for the Linux Initrd media device path
   3
   4   Linux distro boot generally relies on an initial ramdisk (initrd) which is
   5   provided by the loader, and which contains additional kernel modules (for
   6   storage and network, for instance), and the initial user space startup code,
   7   i.e., the code which brings up the user space side of the entire OS.
   8
   9   In order to provide a standard method to locate this initrd, the GUID defined
  10   in this file is used to describe the device path for a LoadFile2 Protocol
  11   instance that is responsible for loading the initrd file.
  12
  13   The kernel EFI Stub will locate and use this instance to load the initrd,
  14   therefore the firmware/loader should install an instance of this to load the
  15   relevant initrd.
  16
  17   Copyright (c) 2020, Arm, Ltd. All rights reserved.<BR>
  18
  19   SPDX-License-Identifier: BSD-2-Clause-Patent
  20 **/
  21
  22 #ifndef LINUX_EFI_INITRD_MEDIA_GUID_H_
  23 #define LINUX_EFI_INITRD_MEDIA_GUID_H_
  24
  25 #define LINUX_EFI_INITRD_MEDIA_GUID \
  26   {0x5568e427, 0x68fc, 0x4f3d, {0xac, 0x74, 0xca, 0x55, 0x52, 0x31, 0xcc, 0x68}}
  27
  28 extern EFI_GUID  gLinuxEfiInitrdMediaGuid;
  29
  30 #endif