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LEARN ABOUT DEBIAN

mkimage

MKIMAGE(1)						      General Commands Manual							MKIMAGE(1)

NAME

       mkimage - Generate image for U-Boot

SYNOPSIS

       mkimage [options]

DESCRIPTION

       The  mkimage  command is used to create images for use with the U-Boot boot loader.  These images can contain the linux kernel, device tree
       blob, root file system image, firmware images etc., either separate or combined.

       mkimage supports two different formats:

       The old legacy image format concatenates the individual parts (for example, kernel image, device tree blob and ramdisk image) and adds a 64
       bytes  header containing information about target architecture, operating system, image type, compression method, entry points, time stamp,
       checksums, etc.

       The new FIT (Flattened Image Tree) format allows for more flexibility in handling images of various types and also enhances integrity  pro-
       tection of images with stronger checksums.

OPTIONS

       List image information:

       -l [uimage file name]
	      mkimage lists the information contained in the header of an existing U-Boot image.

       Create old legacy image:

       -A [architecture]
	      Set architecture. Pass -h as the architecture to see the list of supported architectures.

       -O [os]
	      Set operating system. bootm command of u-boot changes boot method by os type.  Pass -h as the OS to see the list of supported OS.

       -T [image type]
	      Set image type.  Pass -h as the image to see the list of supported image type.

       -C [compression type]
	      Set compression type.  Pass -h as the compression to see the list of supported compression type.

       -a [load addess]
	      Set load address with a hex number.

       -e [entry point]
	      Set entry point with a hex number.

       -n [image name]
	      Set image name to 'image name'.

       -d [image data file]
	      Use image data from 'image data file'.

       -x     Set XIP (execute in place) flag.

       Create FIT image:

       -D [dtc options]
	      Provide special options to the device tree compiler that is used to create the image.

       -f [image tree source file]
	      Image tree source file that describes the structure and contents of the FIT image.

EXAMPLES

       List image information:
       mkimage -l uImage

       Create legacy image with compressed PowerPC Linux kernel:
       mkimage -A powerpc -O linux -T kernel -C gzip 
       -a 0 -e 0 -n Linux -d vmlinux.gz uImage

       Create FIT image with compressed PowerPC Linux kernel:
       mkimage -f kernel.its kernel.itb

HOMEPAGE

       http://www.denx.de/wiki/U-Boot/WebHome

AUTHOR

       This manual page was written by Nobuhiro Iwamatsu <iwamatsu@nigauri.org> and Wolfgang Denk <wd@denx.de>

								    2010-05-16								MKIMAGE(1)

UNIX for Advanced & Expert Users