mkubootimage.1: improve markup

usr.bin/mkubootimage/mkubootimage.1

@@ -1,4 +1,4 @@
-.\"	$NetBSD: mkubootimage.1,v 1.19 2024/05/21 23:31:21 uwe Exp $
+.\"	$NetBSD: mkubootimage.1,v 1.20 2024/05/22 00:02:46 uwe Exp $
 .\"
 .\" Copyright (c) 2012 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -35,18 +35,65 @@
 .Nd create U-Boot loader image
 .Sh SYNOPSIS
 .Nm
+.
 .Op Fl hu
-.Fl A No ( arm Ns | Ns arm64 Ns | Ns i386 Ns | Ns mips Ns | Ns mips64 Ns | Ns or1k Ns | Ns powerpc Ns | Ns riscv Ns | Ns sh )
+.
+.Fl A Po Xo
+.Li arm     Ns \||\| Ns
+.Li arm64   Ns \||\| Ns
+.Li i386    Ns \||\| Ns
+.Li mips    Ns \||\| Ns
+.Li mips64  Ns \||\| Ns
+.Li or1k    Ns \||\| Ns
+.Li powerpc Ns \||\| Ns
+.Li riscv   Ns \||\| Ns
+.Li sh
+.Xc Pc
+.
+.br
 .Fl a Ar address
-.Op Fl C Po bz2 Ns | Ns gz Ns | Ns lzma Ns | Ns lzo Ns | Ns none Pc
+.
+.Oo Fl C Po Xo
+.Li bz2  Ns \||\| Ns
+.Li gz   Ns \||\| Ns
+.Li lzma Ns \||\| Ns
+.Li lzo  Ns \||\| Ns
+.Li none
+.Xc Pc Oc
+.
 .Op Fl E Ar address
+.
 .Op Fl e Ar address
-.Op Fl f Po arm64 Ns | Ns uimg Pc
+.
+.Oo Fl f Po Xo
+.Li arm64 Ns \||\| Ns
+.Li uimg
+.Xc Pc Oc
+.
 .Op Fl m Ar magic
-.Fl n Ar image
-.Op Fl O Po freebsd Ns | Ns linux Ns | Ns netbsd Ns | Ns openbsd Pc
-.Fl T No ( fs Ns | Ns kernel Ns | Ns kernel_noload Ns | Ns ramdisk Ns | Ns script Ns | Ns standalone )
+.
+.Fl n Ar name
+.
+.br
+.Oo Fl O Po Xo
+.Li freebsd Ns \||\| Ns
+.Li linux   Ns \||\| Ns
+.Li netbsd  Ns \||\| Ns
+.Li openbsd
+.Xc Pc Oc
+.
+.br
+.Fl T Po Xo
+.Li fs            Ns \||\| Ns
+.Li kernel        Ns \||\| Ns
+.Li kernel_noload Ns \||\| Ns
+.Li ramdisk       Ns \||\| Ns
+.Li script        Ns \||\| Ns
+.Li standalone
+.Xc Pc
+.
 .Op Fl t Ar epoch
+.
 .Ar source destination
 .\"
 .Sh DESCRIPTION
@@ -56,23 +103,46 @@ 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 arm64 Ns | Ns i386 Ns | Ns mips Ns | Ns mips64 Ns | Ns or1k Ns | Ns powerpc Ns | Ns riscv Ns | Ns sh )
+.Bl -tag -width Fl
+.
+.It Fl A Po Xo
+.Li arm     Ns \||\| Ns
+.Li arm64   Ns \||\| Ns
+.Li i386    Ns \||\| Ns
+.Li mips    Ns \||\| Ns
+.Li mips64  Ns \||\| Ns
+.Li or1k    Ns \||\| Ns
+.Li powerpc Ns \||\| Ns
+.Li riscv   Ns \||\| Ns
+.Li sh
+.Xc Pc
 Defines the architecture.
 This is required for
-.Qq uimg
+.Ql uimg
 format images.
+.
 .It Fl a Ar address
 Sets the image load address.
 This is an integer between 0 and
 .Dv UINT32_MAX .
 This is required for all
-.Qq uimg
-image types except for script, ramdisk, and kernel_noload.
-.It Fl C No ( bz2 Ns | Ns gz Ns | Ns lzma Ns | Ns lzo Ns | Ns none )
+.Ql uimg
+image types except for
+.Li script , ramdisk ,
+and
+.Li kernel_noload .
+.
+.It Fl C Po Xo
+.Li bz2  Ns \||\| Ns
+.Li gz   Ns \||\| Ns
+.Li lzma Ns \||\| Ns
+.Li lzo  Ns \||\| Ns
+.Li none
+.Xc Pc
 Defines the compression.
 The default is
-.Qq none .
+.Ql none .
+.
 .It Fl E Ar address
 Define the entry point.
 This is an integer between 0 and
@@ -88,6 +158,7 @@ or
 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
@@ -99,37 +170,61 @@ or
 are not set, the entry point defaults to the
 image load address
 .Pq Fl a .
-.It Fl f No ( arm64 Ns | Ns uimg )
+.
+.It Fl f Po Xo
+.Li arm64 Ns \||\| Ns
+.Li uimg
+.Xc Pc
 Defines the output image format type.
 The default is
-.Qq uimg .
+.Ql uimg .
+.
 .It Fl h
 Display the usage and exit.
+.
 .It Fl m Ar magic
 Set the magic used for
-.Qq uimg
+.Ql uimg
 format images.
 This is an integer between 0 and
 .Dv UINT32_MAX .
 The default is
-.Qq 0x27051956 .
-.It Fl n Ar image
+.Ql 0x27051956 .
+.
+.It Fl n Ar name
 Defines the image name.
 This is required.
-.It Fl O No ( freebsd Ns | Ns linux Ns | Ns netbsd Ns | Ns openbsd )
+.
+.It Fl O Po Xo
+.Li freebsd Ns \||\| Ns
+.Li linux   Ns \||\| Ns
+.Li netbsd  Ns \||\| Ns
+.Li openbsd
+.Xc Pc
 Defines the operating system type.
 The default OS name is
-.Qq netbsd .
-.It Fl T No ( fs Ns | Ns kernel Ns | Ns kernel_noload Ns | Ns ramdisk Ns | Ns script Ns | Ns standalone )
+.Ql netbsd .
+.
+.It Fl T Po Xo
+.Li fs            Ns \||\| Ns
+.Li kernel        Ns \||\| Ns
+.Li kernel_noload Ns \||\| Ns
+.Li ramdisk       Ns \||\| Ns
+.Li script        Ns \||\| Ns
+.Li standalone
+.Xc Pc
 Defines the image type.
 This is required for
-.Qq uimg
+.Ql uimg
 format images.
+.
 .It Fl t Ar epoch
 Use given epoch timestamp as image creation time.
-(This is only used for legacy U-Boot images.)
+.Pq This is only used for legacy U-Boot images.
+.
 .It Fl u
 Update the header in an existing file instead of creating a new one.
+.
 .El
 .Pp
 The required
@@ -147,7 +242,7 @@ 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
+.Bd -literal -offset indent
  image type:  uimg
  magic:       0x27051956
  time:        Tue May 21 18:05:09 2024
@@ -164,8 +259,10 @@ for example:
 .Ed
 .\" .Sh FILES
 .Sh SEE ALSO
-.Qq Das U-Boot - the Universal Boot Loader
-.Pa http://www.denx.de/wiki/U-Boot/
+.Rs
+.%T Das U-Boot \(en the Universal Boot Loader
+.%U http://www.denx.de/wiki/U-Boot/
+.Re
 .\"
 .\" .Sh STANDARDS
 .\"