#!/bin/bash
set -e

MP_MINIX=/tmp/minix
MP_BOOT=/tmp/minixboot

: ${ARCH=evbearm-el}
: ${OBJ=../obj.arm}
: ${CROSS_TOOLS=${OBJ}/"tooldir.`uname -s`-`uname -r`-`uname -m`"/bin}
: ${CROSS_PREFIX=${CROSS_TOOLS}/arm-elf32-minix-}
: ${DESTDIR=${OBJ}/destdir.$ARCH}
: ${FSTAB=$DESTDIR/etc/fstab}
: ${LOOP=/dev/loop0}
: ${EMPTYIMG=minix_arm_sd_empty.img}
: ${IMG=minix_arm_sd.img}
: ${QEMU=/opt/bin/qemu-system-arm}

BUILDSH=build.sh

if [ ! -f $BUILDSH ]
then	echo "Please invoke me from the root source dir, where $BUILDSH is."
	exit 1
fi

if [ ! -f ${EMPTYIMG}.bz2 ]
then	echo Retrieving $EMPTYIMG
	wget http://www.minix3.org/arm/${EMPTYIMG}.bz2
fi

if [ ! -f $IMG ]
then	echo decompressing $EMPTYIMG onto $IMG
	bzip2 -d -k ${EMPTYIMG}.bz2
	mv $EMPTYIMG $IMG
fi

# remove fstab and generated pw db
rm -rf $DESTDIR/etc

sh build.sh -j4 -m$ARCH -O $OBJ -D $DESTDIR -u distribution 

cat >$FSTAB <<END_FSTAB
/dev/c0d0p1s0   /       mfs     rw                      0       1
/dev/c0d0p1s2   /usr    mfs     rw                      0       2
/dev/c0d0p1s1   /home   mfs     rw                      0       2
END_FSTAB

rm -f $DESTDIR/SETS.*

${CROSS_TOOLS}/nbpwd_mkdb -V 0 -p -d $DESTDIR $DESTDIR/etc/master.passwd

set -x

umount $MP_MINIX/home || true
umount $MP_MINIX/usr || true
umount $MP_MINIX || true
umount $MP_BOOT || true

losetup -d $LOOP || true
losetup $LOOP $IMG

${CROSS_TOOLS}/nbmkfs.mfs ${LOOP}p5
${CROSS_TOOLS}/nbmkfs.mfs ${LOOP}p6
${CROSS_TOOLS}/nbmkfs.mfs ${LOOP}p7

mkdir -p $MP_BOOT
mount ${LOOP}p1 $MP_BOOT

mkdir -p ${MP_MINIX}
mount ${LOOP}p5 ${MP_MINIX}

mkdir -p ${MP_MINIX}/home
mkdir -p ${MP_MINIX}/usr
mount ${LOOP}p6 ${MP_MINIX}/home
mount ${LOOP}p7 ${MP_MINIX}/usr

cp releasetools/uEnv.txt releasetools/cmdline.txt $MP_BOOT

${CROSS_PREFIX}objcopy ${OBJ}/kernel/kernel -O binary ${OBJ}/kernel.bin
cp ${OBJ}/kernel.bin $MP_BOOT

set -x

rsync -a $DESTDIR/ $MP_MINIX/

for f in vm rs pm sched vfs ds mfs pfs init
do
    cp ${OBJ}/servers/$f/$f ${OBJ}/$f.elf
    ${CROSS_PREFIX}strip -s ${OBJ}/$f.elf
    cp ${OBJ}/$f.elf $MP_BOOT
done

for f in tty memory log
do
    cp ${OBJ}/drivers/$f/$f ${OBJ}/$f.elf
    ${CROSS_PREFIX}strip -s ${OBJ}/$f.elf
    cp ${OBJ}/$f.elf $MP_BOOT
done

# Unmount disk image
sync

umount $MP_MINIX/home
umount $MP_MINIX/usr
umount $MP_MINIX
umount $MP_BOOT
losetup -d $LOOP

$QEMU -M beaglexm -drive if=sd,cache=writeback,file=$IMG -clock unix -serial pty -vnc :1  $*