busybox: add dtname/dtfile helper scripts

packages/sysutils/busybox/package.mk

@@ -124,6 +124,8 @@ makeinstall_target() {
   mkdir -p $INSTALL/usr/bin
     [ $TARGET_ARCH = x86_64 ] && cp $PKG_DIR/scripts/getedid $INSTALL/usr/bin
     cp $PKG_DIR/scripts/createlog $INSTALL/usr/bin/
+    cp $PKG_DIR/scripts/dtfile $INSTALL/usr/bin
+    cp $PKG_DIR/scripts/dtname $INSTALL/usr/bin
     cp $PKG_DIR/scripts/lsb_release $INSTALL/usr/bin/
     cp $PKG_DIR/scripts/apt-get $INSTALL/usr/bin/
     cp $PKG_DIR/scripts/sudo $INSTALL/usr/bin/

packages/sysutils/busybox/scripts/dtfile

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2019-present Team LibreELEC (https://libreelec.tv)
+
+COMPATIBLE=$(cat /proc/device-tree/compatible | 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 extlinux.conf | sed 's, *FDT /dtb/,,g')
+  elif [ -e /flash/boot.ini ]; then
+    DTFILE=$(grep -m 1 dtb_name boot.ini | cut -d \" -f2 | sed 's,/dtb/,,g')
+  elif [ -e /flash/uEnv.ini ]; then
+    DTFILE=$(grep dtb_name /flash/uEnv.ini | sed 's,dtb_name=/dtb/,,g')
+  else
+    DTFILE=""
+  fi
+fi
+
+echo "$DTFILE"

packages/sysutils/busybox/scripts/dtname

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2018-present Team LibreELEC (https://libreelec.tv)
+
+COMPATIBLE=$(cat /proc/device-tree/compatible | tr -d '\000' | sed -n -e 's/.*\(allwinner\|amlogic\|rockchip\).*/\1/p')
+
+if [ -n "$COMPATIBLE" ]; then
+  DTNAME=$(cat /proc/device-tree/compatible | cut -f1,2 -d',' | head -n 1)
+  echo "$DTNAME"
+else
+  echo "unknown"
+fi