LinuxEfiInitrdMedia.h File Reference

Macros
#define	LINUX_EFI_INITRD_MEDIA_GUID   {0x5568e427, 0x68fc, 0x4f3d, {0xac, 0x74, 0xca, 0x55, 0x52, 0x31, 0xcc, 0x68}}

Variables
EFI_GUID	gLinuxEfiInitrdMediaGuid

Detailed Description

GUID definition for the Linux Initrd media device path

Linux distro boot generally relies on an initial ramdisk (initrd) which is provided by the loader, and which contains additional kernel modules (for storage and network, for instance), and the initial user space startup code, i.e., the code which brings up the user space side of the entire OS.

In order to provide a standard method to locate this initrd, the GUID defined in this file is used to describe the device path for a LoadFile2 Protocol instance that is responsible for loading the initrd file.

The kernel EFI Stub will locate and use this instance to load the initrd, therefore the firmware/loader should install an instance of this to load the relevant initrd.

Copyright (c) 2020, Arm, Ltd. All rights reserved.

SPDX-License-Identifier: BSD-2-Clause-Patent

Macro Definition Documentation

#define LINUX_EFI_INITRD_MEDIA_GUID   {0x5568e427, 0x68fc, 0x4f3d, {0xac, 0x74, 0xca, 0x55, 0x52, 0x31, 0xcc, 0x68}}

Variable Documentation

EFI_GUID gLinuxEfiInitrdMediaGuid