review mkubootimage.1 manual

["Jeremy C. Reed" <reed%reedmedia.net@localhost>]

Here is a draft of a mkubootimage(1) man page. Please note that I do not 
use this tool, but provided this manual since it was missing. Please 
fill in the holes and improve this. I cc'd a few developers who I think 
have used it.

.\"     $NetBSD$
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.\" Copyright (c) 2008 The NetBSD Foundation, Inc.
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.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Jeremy C. Reed
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.Dd November 28, 2012
.Dt MKUBOOTIMAGE 1
.Os
.Sh NAME
.Nm mkubootimage
.Nd create U-Boot loader image
.Sh SYNOPSIS
.Nm
.Fl A No ( arm Ns | Ns mips Ns | Ns mips64 Ns | Ns powerpc )
.Fl a Ar address
.Op Fl C No ( bz2 Ns | Ns gz Ns | Ns lzma Ns | Ns lzo Ns | Ns none )
.Op Fl E Ar address
.Op Fl e Ar address
.Op Fl h
.Op Fl m Ar magic
.Fl n Ar image
.Op Fl O No ( freebsd Ns | Ns linux Ns | Ns netbsd Ns | Ns openbsd )
.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 ULONG_MAX.
This is required.
.It Fl C No ( bz2 Ns | Ns gz Ns | Ns lzma Ns | Ns lzo Ns | Ns none NS )
.\" TODO: fix the ) ] at end of above
Defines the compression.
The default is
.Qq none .
.It Fl E Ar address
Define the entry point.
This is an integer between 0 and ULONG_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 ULONG_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 ULONG_MAX.
The default is
.Qq 0x27051956.
.\" TODO: confirm that magic default?
.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 )
.\" TODO: fix the ) ] at end of above
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 )
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