rpi0w also has bluetooth support

board/raspberrypi/overlay/etc/init.d/S13btuart

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+sys_conf="/etc/bluetooth.conf"
+boot_conf="/boot/bluetooth.conf"
+conf="/data/etc/bluetooth.conf"
+
+test -f $conf || test -f $boot_conf || test -f $sys_conf || exit 0
+
+test -n "$os_version" || source /etc/init.d/base
+
+function start() {
+    if [ "$(cat /proc/device-tree/aliases/uart0)" = "$(cat /proc/device-tree/aliases/serial1)" ] ; then
+        if [ "$(wc -c /proc/device-tree/soc/gpio@7e200000/uart0_pins/brcm\,pins | cut -f 1 -d ' ')" = " 16" ] ; then
+	        /usr/bin/hciattach -t5 /dev/serial1 bcm43xx 3000000 flow - &>/dev/null
+        else
+	        /usr/bin/hciattach -t5 /dev/serial1 bcm43xx 921600 noflow - &>/dev/null
+        fi
+    else
+        /usr/bin/hciattach -t5 /dev/serial1 bcm43xx 460800 noflow - &>/dev/null
+    fi
+}
+
+case "$1" in
+    start)
+        msg_begin "Attaching UART bluetooth modem"
+        # for some reason, sometimes the hciattach command needs to be run twice
+        (start || start) &>/dev/null &
+        msg_background
+        ;;
+
+    stop)
+        msg_begin "Detaching UART bluetooth modem"
+        killall hciattach &>/dev/null
+        test $? == 0 && msg_done || msg_fail
+        ;;
+
+    *)
+        echo $"Usage: $0 {start}"
+        exit 1
+esac
+
+exit $?
+

board/raspberrypi/overlay/etc/udev/rules.d/99-com.rules

@@ -0,0 +1,32 @@
+SUBSYSTEM=="input", GROUP="input", MODE="0660"
+SUBSYSTEM=="i2c-dev", GROUP="i2c", MODE="0660"
+SUBSYSTEM=="spidev", GROUP="spi", MODE="0660"
+SUBSYSTEM=="bcm2835-gpiomem", GROUP="gpio", MODE="0660"
+
+SUBSYSTEM=="gpio*", PROGRAM="/bin/sh -c '\
+	chown -R root:gpio /sys/class/gpio && chmod -R 770 /sys/class/gpio;\
+	chown -R root:gpio /sys/devices/virtual/gpio && chmod -R 770 /sys/devices/virtual/gpio;\
+	chown -R root:gpio /sys$devpath && chmod -R 770 /sys$devpath\
+'"
+
+KERNEL=="ttyAMA[01]", PROGRAM="/bin/sh -c '\
+	ALIASES=/proc/device-tree/aliases; \
+	if cmp -s $ALIASES/uart0 $ALIASES/serial0; then \
+		echo 0;\
+	elif cmp -s $ALIASES/uart0 $ALIASES/serial1; then \
+		echo 1; \
+	else \
+		exit 1; \
+	fi\
+'", SYMLINK+="serial%c"
+
+KERNEL=="ttyS0", PROGRAM="/bin/sh -c '\
+	ALIASES=/proc/device-tree/aliases; \
+	if cmp -s $ALIASES/uart1 $ALIASES/serial0; then \
+		echo 0; \
+	elif cmp -s $ALIASES/uart1 $ALIASES/serial1; then \
+		echo 1; \
+	else \
+		exit 1; \
+	fi \
+'", SYMLINK+="serial%c"