xref: /system/libufdt/tests/gen_test.sh

#!/bin/bash

# We want to generate two device tree blob (.dtb) files by combining
# the "base" and "add" device tree source (.dts) files in two
# different ways.
#
# 1) Use /include/ and compile via dtc to make the "gold standard"
#
# 2) Compile them separately dtc, and join them with the
#    ufdt_apply_overlay program
#
# Then, compare 1) and 2) with dts_diff (diff merged nodes) and return 0
# iff they are identical.

SCRIPT_DIR="$(dirname "$(readlink -f "$0")")"
source ${SCRIPT_DIR}/common.sh

on_exit() {
  rm -rf "$TEMP_DIR"
}

# Constants
IN_DATA_DIR="testdata"

TEMP_DIR=`mktemp -d`
# The script will exit directly if any command fails.
set -e
trap on_exit EXIT

# Global variables
TESTCASE_NAME=$1
BASE_DTS="$IN_DATA_DIR/${TESTCASE_NAME}-base.dts"
OVERLAY_DTS="$IN_DATA_DIR/${TESTCASE_NAME}-overlay.dts"
INC_MERGED_DTS="$TEMP_DIR/${TESTCASE_NAME}-inc-merged.dts"
OVL_MERGED_DTS="$TEMP_DIR/${TESTCASE_NAME}-ovl-merged.dts"

#
# Complie and diff
#
$SCRIPT_DIR/verify_dto_inc.sh "$BASE_DTS" "$OVERLAY_DTS" "$INC_MERGED_DTS"
$SCRIPT_DIR/verify_dto_ovl.sh "$BASE_DTS" "$OVERLAY_DTS" "$OVL_MERGED_DTS"
dts_diff "$INC_MERGED_DTS" "$OVL_MERGED_DTS"