#!/bin/sh

set -u
set -e

BOARD_DIR="$(dirname $0)"
BOARD_NAME="$(basename ${BOARD_DIR})"
GENIMAGE_CFG="${BOARD_DIR}/genimage-${BOARD_NAME}.cfg"
GENIMAGE_TMP="${BUILD_DIR}/genimage.tmp"

cp output/build/linux-custom/arch/arm/boot/dts/overlays/hd44780-lcd.dtbo "${BINARIES_DIR}/rpi-firmware/overlays/"

echo "root=/dev/mmcblk0p2 rootwait console=ttyAMA0,115200 hdmi_blanking=2" \
		 > "${BINARIES_DIR}/rpi-firmware/cmdline.txt"

cat > "${BINARIES_DIR}/rpi-firmware/config.txt" <<EOF
start_file=start.elf
fixup_file=fixup.dat
kernel=zImage
gpu_mem_256=0
gpu_mem_512=0
gpu_mem_1024=0
dtoverlay=hd44780-lcd.dtbo
dtparam=pin_d4=26,pin_d5=19,pin_d6=13,pin_d7=6,pin_en=20,pin_rs=21
EOF

# Pass an empty rootpath. genimage makes a full copy of the given rootpath to
# ${GENIMAGE_TMP}/root so passing TARGET_DIR would be a waste of time and disk
# space. We don't rely on genimage to build the rootfs image, just to insert a
# pre-built one in the disk image.

trap 'rm -rf "${ROOTPATH_TMP}"' EXIT
ROOTPATH_TMP="$(mktemp -d)"

rm -rf "${GENIMAGE_TMP}"

genimage \
	--rootpath "${ROOTPATH_TMP}"   \
	--tmppath "${GENIMAGE_TMP}"    \
	--inputpath "${BINARIES_DIR}"  \
	--outputpath "${BINARIES_DIR}" \
	--config "${GENIMAGE_CFG}"

exit $?