| #!/bin/bash |
| # Copyright (C) 2016 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| PROG_NAME=`basename $0` |
| |
| function usage() { |
| echo "Usage:" |
| echo " $PROG_NAME (--fdt|--ufdt) (--remote) <Base DTS> <Overlay DTS> <Output DTS>" |
| } |
| |
| function on_exit() { |
| rm -rf "$TEMP_DIR" |
| } |
| |
| # |
| # Start |
| # |
| |
| # Setup OVERLAY |
| if [ "$1" == "--fdt" ]; then |
| shift |
| OVERLAY="fdt_apply_overlay" |
| elif [ "$1" == "--ufdt" ]; then |
| shift |
| OVERLAY="ufdt_apply_overlay" |
| else |
| usage |
| exit 1 |
| fi |
| |
| # --remote: run overlay on the device with adb |
| if [ "$1" == "--remote" ]; then |
| shift |
| EXE_PATH="${ANDROID_PRODUCT_OUT}/obj/EXECUTABLES" |
| REMOTE_PATH="/data/local/tmp" |
| adb push "${EXE_PATH}/${OVERLAY}_intermediates/${OVERLAY}" \ |
| "$REMOTE_PATH" > /dev/null |
| fi |
| |
| if [[ $# -lt 3 ]]; then |
| usage |
| exit 1 |
| fi |
| |
| BASE_DTS=$1 |
| OVERLAY_DTS=$2 |
| OUT_DTS=$3 |
| |
| TEMP_DIR=`mktemp -d` |
| # The script will exit directly if any command fails. |
| set -e |
| trap on_exit EXIT |
| |
| # Compile the *-base.dts to make *-base.dtb |
| BASE_DTS_NAME=`basename "$BASE_DTS"` |
| BASE_DTB_NAME="${BASE_DTS_NAME}-base.dtb" |
| BASE_DTB="${TEMP_DIR}/${BASE_DTB_NAME}" |
| dtc -@ -qq -O dtb -o "$BASE_DTB" "$BASE_DTS" |
| |
| # Compile the *-overlay.dts to make *-overlay.dtb |
| OVERLAY_DTS_NAME=`basename "$OVERLAY_DTS"` |
| OVERLAY_DTB_NAME="${OVERLAY_DTS_NAME}-overlay.dtb" |
| OVERLAY_DTB="${TEMP_DIR}/${OVERLAY_DTB_NAME}" |
| dtc -@ -qq -O dtb -o "$OVERLAY_DTB" "$OVERLAY_DTS" |
| |
| # Run ufdt_apply_overlay to combine *-base.dtb and *-overlay.dtb |
| # into *-merged.dtb |
| MERGED_DTB_NAME="${BASE_DTS_NAME}-merged.dtb" |
| MERGED_DTB="${TEMP_DIR}/${MERGED_DTB_NAME}" |
| if [ -z "$REMOTE_PATH" ]; then |
| "$OVERLAY" "$BASE_DTB" "$OVERLAY_DTB" "$MERGED_DTB" |
| else |
| adb push "$BASE_DTB" "$REMOTE_PATH" > /dev/null |
| adb push "$OVERLAY_DTB" "$REMOTE_PATH" > /dev/null |
| adb shell " |
| cd "$REMOTE_PATH" && |
| "./${OVERLAY}" "$BASE_DTB_NAME" "$OVERLAY_DTB_NAME" "$MERGED_DTB_NAME" |
| " |
| adb pull "${REMOTE_PATH}/${MERGED_DTB_NAME}" "$MERGED_DTB" > /dev/null |
| fi |
| |
| if [ ! -z "$REMOTE_PATH" ]; then |
| # clean up |
| adb shell " |
| cd "$REMOTE_PATH" && |
| rm -f "$OVERLAY" && |
| rm -f "$BASE_DTB_NAME" && |
| rm -f "$OVERLAY_DTB_NAME" && |
| rm -f "$MERGED_DTB_NAME" |
| " > /dev/null |
| fi |
| |
| # Dump |
| dtc -s -O dts -o "$OUT_DTS" "$MERGED_DTB" |