#!/bin/bash

# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2019-present Team LibreELEC (https://libreelec.tv)

COMPATIBLE=$(cat /proc/device-tree/compatible 2>/dev/null | tr -d '\000' | sed -n -e 's/.*\(allwinner\|amlogic\|rockchip\).*/\1/p')

if [ -n "$COMPATIBLE" ]; then
  if [ -e /flash/extlinux/extlinux.conf ]; then
    DTFILE=$(grep FDT /flash/extlinux/extlinux.conf | sed 's, *FDT /dtb/,,g')
  elif [ -e /flash/boot.ini ]; then
    DTFILE=$(grep -m 1 dtb_name /flash/boot.ini | cut -d \" -f2 | sed 's,/dtb/,,g')
  elif [ -e /flash/uEnv.ini ]; then
    DTFILE=$(grep dtb_name /flash/uEnv.ini | sed 's,dtb_name=/dtb/,,g')
  else
    DTFILE=""
  fi
fi

echo "$DTFILE"