Mayank Grover | f3b7818 | 2017-12-19 13:31:30 +0530 | [diff] [blame^] | 1 | #!/bin/bash |
| 2 | |
| 3 | PROG_NAME=`basename $0` |
| 4 | |
| 5 | function usage() { |
| 6 | echo "Usage:" |
| 7 | echo " $PROG_NAME (--fdt|--ufdt) <Base DTS> <Overlay DTS> <Output DTS>" |
| 8 | } |
| 9 | |
| 10 | function on_exit() { |
| 11 | rm -rf "$TEMP_DIR" |
| 12 | } |
| 13 | |
| 14 | # |
| 15 | # Start |
| 16 | # |
| 17 | |
| 18 | # Setup OVERLAY |
| 19 | if [ "$1" == "--fdt" ]; then |
| 20 | shift |
| 21 | OVERLAY="fdt_apply_overlay" |
| 22 | elif [ "$1" == "--ufdt" ]; then |
| 23 | shift |
| 24 | OVERLAY="ufdt_apply_overlay" |
| 25 | else |
| 26 | usage |
| 27 | exit 1 |
| 28 | fi |
| 29 | |
| 30 | if [[ $# -lt 3 ]]; then |
| 31 | usage |
| 32 | exit 1 |
| 33 | fi |
| 34 | |
| 35 | BASE_DTS=$1 |
| 36 | OVERLAY_DTS=$2 |
| 37 | OUT_DTS=$3 |
| 38 | |
| 39 | TEMP_DIR=`mktemp -d` |
| 40 | # The script will exit directly if any command fails. |
| 41 | set -e |
| 42 | trap on_exit EXIT |
| 43 | |
| 44 | # Compile the *-base.dts to make *-base.dtb |
| 45 | BASE_DTS_NAME=`basename "$BASE_DTS"` |
| 46 | BASE_DTB="$TEMP_DIR/${BASE_DTS_NAME}-base.dtb" |
| 47 | dtc -@ -qq -O dtb -o "$BASE_DTB" "$BASE_DTS" |
| 48 | |
| 49 | # Compile the *-overlay.dts to make *-overlay.dtb |
| 50 | OVERLAY_DTS_NAME=`basename "$OVERLAY_DTS"` |
| 51 | OVERLAY_DTB="$TEMP_DIR/${OVERLAY_DTS_NAME}-overlay.dtb" |
| 52 | dtc -@ -qq -O dtb -o "$OVERLAY_DTB" "$OVERLAY_DTS" |
| 53 | |
| 54 | # Run ufdt_apply_overlay to combine *-base.dtb and *-overlay.dtb |
| 55 | # into *-merged.dtb |
| 56 | MERGED_DTB="$TEMP_DIR/${BASE_DTS_NAME}-merged.dtb" |
| 57 | "$OVERLAY" "$BASE_DTB" "$OVERLAY_DTB" "$MERGED_DTB" |
| 58 | |
| 59 | # Dump |
| 60 | dtc -s -O dts -o "$OUT_DTS" "$MERGED_DTB" |