freebsd-dev/sys/tools/fdt/make_dtbo.sh

#!/bin/sh
#
# $FreeBSD$

# Script generates dtbo file ($3) from dtso source ($2) in build tree S ($1)
S=$1
dtso="$2"
dtbo_path=$3

if [ -z "$dtso" ]; then
    echo "No DTS overlays specified"
    exit 1
fi

if [ -z "${MACHINE}" ]; then
    MACHINE=$(uname -m)
fi

: "${DTC:=dtc}"
: "${ECHO:=echo}"
: "${CPP:=cpp}"

for d in ${dtso}; do
    dtb="${dtbo_path}/$(basename "$d" .dtso).dtbo"
    ${CPP} -P -x assembler-with-cpp -I "$S/contrib/device-tree/include" -I "$S/dts/${MACHINE}" -I "$S/contrib/device-tree/src/${MACHINE}" -include "$d" /dev/null |
	${DTC} -@ -O dtb -o "$dtb" -i "$S/dts/${MACHINE}" -i "$S/contrib/device-tree/src/${MACHINE}"
done