#!/bin/sh
# Copyright 2002, 2003  Slackware Linux, Inc.,  Concord, CA  USA
#    All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# This makes a bootdisk in /tmp from a kernel image.
#
# This is the command to use:
#
# makedisk name kernel
#          |    |
#          |    +- This is the name (and maybe path to) the kernel
#          |       you plan to use, such as bare.i/bzImage.
#          |
#          +- This is the name to give the disk, like bare.i.

VERSION="10.0"

# This is reasonable for 1.44MB floppies
SIZELIMIT=1417

if [ "$1" = "" -o "$2" = "" -o ! -r "$2" ]; then
  echo
  echo "Usage: makedisk name kernel"
  echo "Example: ./makedisk bare.i bare.i/vmlinuz"
  echo "Disk is made in /tmp, and may then be copied to a formatted floppy."
  echo
  exit 1
fi

DISKNAME=$1
KERNEL=$2
CWD=`pwd`
MOUNT=/tmp/mnt-$$
if [ ! -d $MOUNT ]; then
  mkdir -p $MOUNT
  DELETE_MOUNT=true
fi
if [ "`du -s $2 | cut -f 1`" -gt "$SIZELIMIT" ]; then
  echo "WARNING: kernel $2 is size `du -s $2 | cut -f 1`K, exceeds ${SIZELIMIT}K."
  echo "         SKIPPING!"
  sleep 2
fi
echo "Making $1 bootdisk from kernel image $2."
echo "Formatting the target disk."
zcat $CWD/1440k.img.gz > /tmp/$DISKNAME
echo "Mounting the target disk on $MOUNT."
mount -o loop -t vfat /tmp/$DISKNAME $MOUNT
echo "Copying files over (ignore permission errors)."
cp $2 $MOUNT/vmlinuz 
## This avoids a syslinux-1.72 bug, and doesn't seem to hurt anything.
## Fixed in syslinux 2.06.
#dd if=/dev/zero bs=1k count=1 >> $MOUNT/vmlinuz

# Did we run out of space?
dd if=/dev/full of=$MOUNT/test bs=32 count=1
RESULT=$?
if [ ! $RESULT = 0 ]; then
  echo "Fatal error on $MOUNT."
  read junk_input;
fi
rm -f $MOUNT/test

echo "Rdeving -R $MOUNT/vmlinuz 0"
rdev -R $MOUNT/vmlinuz 0
echo "Rdeving rdev -r $MOUNT/vmlinuz 49152"
rdev -r $MOUNT/vmlinuz 49152
echo "Rdeving -v $MOUNT/vmlinuz -v"
rdev -v $MOUNT/vmlinuz -1
echo "Rdeving $MOUNT/vmlinuz /dev/fd0"
rdev $MOUNT/vmlinuz /dev/fd0
cat << EOF > $MOUNT/message.txt

Welcome to the 09Slackware07 Linux $VERSION $DISKNAME bootdisk!

If you need to pass extra parameters to the kernel, enter them at the prompt
below after one of the valid configuration names:  ramdisk (to load a rootdisk
into memory and boot it), and mount (to boot an existing Linux partition).
NOTE:  Most hardware is auto-detected without parameters.  So, before assuming
       your system requires parameters, try a few different bootdisks. :^)

Here are some examples (and more can be found in the BOOTING file):
   ramdisk hdx=cyls,heads,sects,wpcom,irq  (needed only if probing fails)
   ramdisk hdx=cdrom (force detection of an IDE/ATAPI CD-ROM drive)
   where hdx can be any of hda through hdh. Examples: hdc=1050,32,64  hdd=cdrom

If you would rather load the root/install disk from your second floppy drive:
   ramdisk root=/dev/fd1

In a pinch, you can boot your Linux system with a command like:
   mount root=/dev/hda1

DON'T SWITCH ANY DISKS YET! This prompt is just for entering extra parameters.
If you don't need to enter any parameters, hit ENTER to continue.

EOF

cat << EOF > $MOUNT/f1.txt
 STANDARD MODES:
 To make the kernel prompt for standard video modes use: vga=ask

 FRAMEBUFFER MODES:
 To get the kernel to start in VESA framebuffer mode, you need to pass it
 a vga= init string on the "boot:" prompt.  Here's a table:

   Colors   640x480 800x600 1024x768 1280x1024 1600x1200
  --------+---------------------------------------------
  256     |   769     771      773      775       796
  32,768  |   784     787      790      793       797
  65,536  |   785     788      791      794       798
  16.8M   |   786     789      792      795       799

  ...such as this for 1024x768x64k:
   vga=791

  F2 returns to the previous page.

EOF

cat << EOF > $MOUNT/syslinux.cfg
default vmlinuz ramdisk_size=7000 root=/dev/fd0u1440 vga=normal rw SLACK_KERNEL=$DISKNAME
prompt 1
timeout 6000
display message.txt
F1 f1.txt
F2 message.txt
#F3 f3.txt
#F4 f4.txt
#F5 f5.txt
#F6 f6.txt
#F7 f7.txt
label ramdisk
  kernel vmlinuz
  append vmlinuz ramdisk_size=7000 root=/dev/fd0u1440 vga=normal rw SLACK_KERNEL=$DISKNAME
label mount
  kernel vmlinuz
  append ramdisk_size=7000 ro
EOF

umount $MOUNT
sync
echo "Installing SYSLINUX."
syslinux -s /tmp/$DISKNAME
echo "Adding extra files (hope they fit :)"
mount -o loop -t vfat /tmp/$DISKNAME $MOUNT
( cd `dirname $2`
  cp config* $MOUNT
  if [ ! $? = 0 ]; then
    rm -f $MOUNT/config*
  fi
  cp System* $MOUNT
  if [ ! $? = 0 ]; then
    rm -f $MOUNT/System*
  fi
)
umount $MOUNT
sync
if [ "$DELETE_MOUNT" = "true" ]; then
  rm -rf $MOUNT
fi
echo "Bootdisk $DISKNAME created."