Ticket #8869: makehaikufloppy

#!/bin/sh

usage() {
    echo "Usage: makebootfloppy [-cd] [-base <directory>] [-preserve] [-image <target>]"
    echo "-cd       : Creates a boot floppy capable of booting to a CD."
    echo "            If not specified, the boot floppy will only be able to boot"
    echo "            systems from hard drives."
    echo "-base     : Specifies the base directory of the system you wish to make"
    echo "            a boot floppy from. Defaults to /boot"
    echo "-preserve : Leaves a copy of the floppy image in /tmp (only valid when"
    echo "            used with the -cd option)."
    echo "-image    : writes the floppy image to the specified file - this implies"
    echo "            the -cd option."
    exit $1
}

BASE=/boot
CD=0
PRESERVE=0
IMAGE=/dev/disk/floppy/raw

while [ "x$1" != "x" ] ; do
    if [ "$1" = "-help" ] || [ "$1" = "--help" ] ; then
        usage 0
    elif [ "$1" = "-cd" ] ; then
        CD=1
    elif [ "$1" = "-preserve" ] ; then
        PRESERVE=1
    elif [ "$1" = "-image" ] ; then
        shift
        IMAGE=$1
        CD=1
        if [ "x$1" = "x" ] ; then
            echo "-image requires an argument."
            usage 1
        fi
    elif [ "$1" = "-base" ] ; then
        shift
        BASE=$1
        if [ "x$1" = "x" ] || [ ! -d $BASE ] ; then
            echo "-base requires a directory argument."
            usage 1
        fi
    else
        echo "Invalid option: $1"
        usage 1
    fi
    shift
done

if [ $CD = 1 ] ; then
    rm -f /tmp/boot.tgz /tmp/boot.img

    echo "Creating boot image..."

    mkdir -p /tmp/system
    cp $BASE/system/kernel_x86 /tmp/system/
    oldCWD=$(pwd)

    cd /tmp
    tar chf /tmp/boot.tar system/kernel_x86
    rm -r /tmp/system

    cd $oldCWD
    cd $BASE
    pwd
    tar rvhf /tmp/boot.tar \
        system/add-ons/kernel/busses/ide \
        system/add-ons/kernel/bus_managers \
        system/add-ons/kernel/file_systems/bfs \
        system/add-ons/kernel/generic \
        system/add-ons/kernel/partitioning_systems \
        system/add-ons/kernel/drivers/disk/scsi/scsi* \
        system/add-ons/kernel/file_systems/bfs \
        > /dev/null
#       system/add-ons/kernel/boot \
    gzip -c /tmp/boot.tar > /tmp/boot.tgz
    rm /tmp/boot.tar
    cd $oldCWD
    if [ $? != 0 ] ; then
        echo "Error creating boot floppy"
        exit 1
    fi

    dd if=/dev/zero of=/tmp/boot.img bs=1k count=1440
    if [ $? != 0 ] ; then
        echo "Error creating temporary boot image"
        exit 1
    fi
    dd if=$BASE/system/haiku_loader of=/tmp/boot.img conv=notrunc
    dd if=/tmp/boot.tgz of=/tmp/boot.img bs=192k seek=1 conv=notrunc

    echo "Writing boot image to "$IMAGE
    dd if=/tmp/boot.img of=$IMAGE bs=72k
    _retval=$?

    if [ $PRESERVE = 0 ] ; then
        rm -f /tmp/boot.tgz /tmp/boot.img
    fi

    if [ $_retval != 0 ] ; then
        echo "Error creating boot floppy"
        exit 1
    fi
else
    # non-CD mode (only writes the bare boot loader)

    echo "Writing boot loader..."
    dd if=$BASE/system/haiku_loader of=$IMAGE bs=18k
    if [ $? != 0 ] ; then
        echo "Error creating boot floppy"
        exit 1
    fi

    echo "Erasing old boot drivers from the floppy..."
    dd if=/dev/zero of=$IMAGE bs=512 conv=notrunc seek=384 count=1
    if [ $? != 0 ] ; then
        echo "Error creating boot floppy"
        exit 1
    fi
fi

echo "Done!"
exit 0