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.\"	$NetBSD: mkubootimage.1,v 1.5 2012/12/29 15:11:56 jmcneill Exp $
.\"
.\" Copyright (c) 2012 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Jeremy C. Reed
.\"
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.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
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.\"
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.Dd December 29, 2012
.Dt MKUBOOTIMAGE 1
.Os
.Sh NAME
.Nm mkubootimage
.Nd create U-Boot loader image
.Sh SYNOPSIS
.Nm
.Op Fl h
.Fl A No ( arm Ns | Ns mips Ns | Ns mips64 Ns | Ns powerpc )
.Fl a Ar address
.Op Fl C No Po bz2 Ns | Ns gz Ns | Ns lzma Ns | Ns lzo Ns | Ns none Pc
.Op Fl E Ar address
.Op Fl e Ar address
.Op Fl m Ar magic
.Fl n Ar image
.Op Fl O No Po freebsd Ns | Ns linux Ns | Ns netbsd Ns | Ns openbsd Pc
.Fl T No ( fs Ns | Ns kernel Ns | Ns ramdisk Ns | Ns standalone )
.Ar source destination
.\"
.Sh DESCRIPTION
The
.Nm
utility is used to create an image for Das U-Boot, the
.Qq Universal Boot Loader .
.Pp
The arguments are as follows:
.Bl -tag -width indent
.It Fl A No ( arm Ns | Ns mips Ns | Ns mips64 Ns | Ns powerpc )
Defines the architecture.
This is required.
.It Fl a Ar address
Sets the image load address.
This is an integer between 0 and
.Dv UINT32_MAX .
This is required.
.It Fl C No ( bz2 Ns | Ns gz Ns | Ns lzma Ns | Ns lzo Ns | Ns none )
Defines the compression.
The default is
.Qq none .
.It Fl E Ar address
Define the entry point.
This is an integer between 0 and
.Dv UINT32_MAX .
This option is the same as
.Fl e
but it inverts the bytes to convert the 32 bit integer
from little to big endian (or vice versa).
If
.Fl E
or
.Fl e
are not set, the entry point defaults to the
image load address
.Pq Fl a .
.It Fl e Ar address
Define the entry point.
This is an integer between 0 and
.Dv UINT32_MAX .
If
.Fl E
or
.Fl e
are not set, the entry point defaults to the
image load address
.Pq Fl a .
.It Fl h
Display the usage and exit.
.It Fl m Ar magic
Set the magic.
This is an integer between 0 and
.Dv UINT32_MAX .
The default is
.Qq 0x27051956 .
.It Fl n Ar image
Defines the image name.
This is required.
.It Fl O No ( freebsd Ns | Ns linux Ns | Ns netbsd Ns | Ns openbsd )
Defines the operating system type.
The default OS name is
.Qq netbsd .
.It Fl T No ( fs Ns | Ns kernel Ns | Ns ramdisk Ns | Ns standalone Ns | Ns script )
Defines the image type.
This is required.
.El
.Pp
The required
.Ar source
argument is the filename of the kernel that is read.
The required
.Ar destination
argument is the filename of the image file that is created.
.\"
.Sh RETURN VALUES
.Nm
returns 1 on failure to read the kernel,
generate a header, or create the image.
.\"
.Sh EXAMPLES
Before the image is written, the header is displayed to standard out;
for example:
.Bd -literal -offset 0
 magic:       0x27051956
 time:        Tue Jun  7 15:58:41 2011
 size:        2482203
 load addr:   0x00020000
 entry point: 0x00020000
 data crc:    0x700fdf53
 os:          2 (netbsd)
 arch:        7 (powerpc)
 type:        2 (kernel)
 comp:        1 (gz)
 name:        NetBSD/evbppc 5.99.52 (INSTALL_PMPPC)
 header crc:  0x94ea96cf
.Ed
.\" TODO: check the name line above
.\" .Sh FILES
.Sh SEE ALSO
.Qq Das U-Boot - the Universal Boot Loader
.Pa http://www.denx.de/wiki/U-Boot/
.\"
.\" .Sh STANDARDS
.\"
.Sh HISTORY
The
.Nm
command first appeared in
.Nx 6.0 .
.\"
.Sh AUTHORS
The
.Nm
utility was originally written by Jared D. McNeill.
This manual page was written by Jeremy C. Reed.
.\" .Sh CAVEATS
.\" .Sh BUGS
.\" .Sh SECURITY CONSIDERATIONS