#!/bin/sh
# installs a rootfs tar archive from OpenADK onto a Compact Flash disk

if [ -z $1 ];then
        printf "Please give your root tar archive as parameter\n"
        exit 1
fi
# create empty partition table
parted -s /dev/sda mklabel msdos
sleep 2
maxsize=$(env LC_ALL=C parted /dev/sda -s unit cyl print |awk '/^Disk/ { print $3 }'|sed -e 's/cyl//')
rootsize=$(($maxsize-2))
parted -s /dev/sda unit cyl mkpartfs primary ext2 0 $rootsize
parted -s /dev/sda unit cyl mkpart primary fat32 $rootsize $maxsize
parted -s /dev/sda set 1 boot on
sfdisk --change-id /dev/sda 2 88 >/dev/null 2>&1
if [ $? -eq 0 ];then
        printf "Successfully created partition ${rootpart}\n"
else
        printf "Partition creation failed, Exiting.\n"
        exit 1
fi
mount -t ext2 /dev/sda1 /mnt
printf "Extracting install archive\n"
tar -C /mnt -xzpf $1
chmod 1777 /mnt/tmp
chmod 4755 /mnt/bin/busybox

speed=$(awk -F \, '/console=ttyS0/ { print $2 }' /proc/cmdline|sed -e "s/ .*$//")

printf "Install bootloader\n"
mkdir -p /mnt/boot/grub
mount -o bind /dev /mnt/dev
chroot /mnt mount -t proc /proc /proc
chroot /mnt mount -t sysfs /sys /sys
cat << EOF > /mnt/boot/grub/grub.cfg
set default=0
set timeout=1
serial --unit=0 --speed=$speed
terminal_output serial 
terminal_input serial 

menuentry "GNU/Linux (OpenADK)" {
        insmod ext2
        set root=(hd0,1)
        linux /boot/vmlinuz-adk root=/dev/sda1 ro init=/init panic=10
}
EOF
chroot /mnt grub-install /dev/sda >/dev/null 2>&1
umount /mnt/proc
umount /mnt/sys
umount /mnt/dev

printf "Creating device nodes\n"
mknod -m 666 /mnt/dev/null c 1 3
mknod -m 622 /mnt/dev/console c 5 1
mknod -m 666 /mnt/dev/tty c 5 0

umount /mnt
printf "Successfully installed.\n"
exit 0
