diff --git a/target/linux/bcm53xx/base-files/etc/diag.sh b/target/linux/bcm53xx/base-files/etc/diag.sh
new file mode 100644
index 0000000000000000000000000000000000000000..05ac9e8374fc7fce458fa4fff3d41200b53a1751
--- /dev/null
+++ b/target/linux/bcm53xx/base-files/etc/diag.sh
@@ -0,0 +1,40 @@
+#!/bin/sh
+# Copyright (C) 2014 OpenWrt.org
+
+. /lib/functions/leds.sh
+
+get_status_led() {
+	local status_led_file
+
+	# There may be more than one color of power LED, try to avoid amber/red
+	status_led_file=$(find /sys/class/leds/ -name "*:power" -a ! -name "*:amber:*" -a ! -name "*:red:*" | head -n1)
+	if [ -d "$status_led_file" ]; then
+		status_led=$(basename $status_led_file)
+		return
+	fi;
+
+	# Now just pick any power LED
+	status_led_file=$(find /sys/class/leds/ -name "*:power:*" | head -n1)
+	if [ -d "$status_led_file" ]; then
+		status_led=$(basename $status_led_file)
+		return
+	fi;
+}
+
+set_state() {
+	get_status_led
+
+	[ -z "$status_led" ] && return
+
+	case "$1" in
+	preinit)
+		status_led_blink_preinit
+		;;
+	failsafe)
+		status_led_blink_failsafe
+		;;
+	done)
+		status_led_on
+		;;
+	esac
+}
diff --git a/target/linux/bcm53xx/base-files/lib/preinit/05_set_preinit_iface_bcm53xx b/target/linux/bcm53xx/base-files/lib/preinit/05_set_preinit_iface_bcm53xx
new file mode 100644
index 0000000000000000000000000000000000000000..0539b82d3ba0c15ad5d4d2e2b8edf591423de185
--- /dev/null
+++ b/target/linux/bcm53xx/base-files/lib/preinit/05_set_preinit_iface_bcm53xx
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+set_preinit_iface() {
+	ifname=eth0
+}
+
+boot_hook_add preinit_main set_preinit_iface