# $NetBSD: rpi.conf,v 1.5 2013/01/13 22:08:43 christos Exp $
# Raspberry PI customization script used by mkimage
#
image=$HOME/rpi.img

firmwaredir=$src/external/broadcom/rpi-firmware/dist
firmwarefiles="LICENCE.broadcom bootcode.bin fixup.dat fixup_cd.dat start.elf start_cd.elf"

sets="base etc comp games man misc modules tests text"
setsdir=$obj/evbarm/media
kerneldir=$src/sys/arch/evbarm/compile/RPI
specialdirs="/kern /proc"

swap=512
size=2048
overhead=8
boot=112
init=8
msdosid=12

tmp=/tmp/rpi.disklabel.$$

make_filesystems() {

	local asize=$(( ${size} * 1024 ))
	local swapsize=$(( ${swap} * 1024 ))
	local bootsize=$(( ${boot} * 1024 ))

	local bootoffset=$((${init} * 1024 ))
	local swapoffset=$(( ${bootoffset} + ${bootsize} ))
	local aoffset=$(( ${swapoffset} + ${swapsize} ))

	local totalsize=$(( ${asize} + ${swapsize} + ${bootsize} + ${bootoffset} ))
	local bps=512
	local spt=32
	local tpc=64
	local spc=2048
	local cylinders=$(( ${totalsize} / ${spc} ))

	cat > ${tmp} << EOF
type: SCSI
disk: STORAGE DEVICE
label: fictitious
flags: removable
bytes/sector: ${bps}
sectors/track: ${spt}
tracks/cylinder: ${tpc}
sectors/cylinder: ${spc}
cylinders: ${cylinders}
total sectors: ${totalsize}
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0           # microseconds
track-to-track seek: 0  # microseconds
drivedata: 0 

8 partitions:
#     size         offset        fstype [fsize bsize cpg/sgs]
 a:   ${asize}     ${aoffset}    4.2BSD   2048 16384     0  # 
 b:   ${swapsize}  ${swapoffset} swap                       #
 d:   ${totalsize} 0             unused      0     0        #
 e:   ${bootsize}  ${bootoffset} MSDOS                      #
EOF
	${sudo} disklabel -R ${vnddev} ${tmp}
	${sudo} fdisk -f -u -0 -s ${msdosid}/${bootoffset}/${bootsize} -F ${image}
	${sudo} newfs /dev/r${vnddev}a
	${sudo} newfs_msdos /dev/r${vnddev}e
	${sudo} mount /dev/${vnddev}a ${mnt}
	${sudo} mkdir ${mnt}/boot
	${sudo} mount_msdos /dev/${vnddev}e ${mnt}/boot
}

make_fstab() {
${sudo} cat > ${mnt}/etc/fstab << EOF
# NetBSD /etc/fstab
# See /usr/share/examples/fstab/ for more examples.
/dev/ld0a	/		ffs	rw,log	1 1
/dev/ld0b	none		swap	sw	0 0
/dev/ld0e	/boot		msdos	rw	1 1
kernfs		/kern		kernfs	rw
ptyfs		/dev/pts	ptyfs	rw
procfs		/proc		procfs	rw
EOF
}

customize() {

    ${sudo} cat >> ${mnt}/etc/rc.conf << EOF
sshd=YES
dhcpcd=YES
mdnsd=YES
wscons=YES
EOF

	${sudo} cat > ${mnt}/boot/cmdline.txt << EOF
console=fb
#fb=1280x1024		# to select a mode, otherwise EDID will be tried and fallback to
#fb=disable		# to disable fb completely
EOF

	echo "${bar} installing firmware files ${bar}"
	(cd ${mnt}/boot &&
		for f in ${firmwarefiles}; do
			echo $f
			${sudo} cp ${firmwaredir}/${f} .
		done
	)

	if [ ! -f ${kerneldir}/kernel.img ]; then
		echo ${PROG}: Missing ${kerneldir}/kernel.img 1>&2
		exit 1
	fi
	echo "${bar} installing kernel ${bar}"
	${sudo} cp ${kerneldir}/kernel.img ${mnt}/boot

	if [ ! -f ${mnt}/dev/MAKEDEV ]; then
		echo ${PROG}: Missing ${mnt}/dev/MAKEDEV 1>&2
		exit 1
	fi
	echo "${bar} running MAKEDEV ${bar}"
	(cd ${mnt}/dev && ${sudo} sh MAKEDEV all)
}

cleanup() {
    rm -f ${tmp}
    ${sudo} umount ${mnt}/boot
}