no support, just bunch of scripts and descriptions
/boot/config.txt
...
[all]
enable_uart=1
dtoverlay=pi3-disable-bt
<?xml version="1.0"?>
<V-Control xmlns:vcontrol="http://www.openv.de/vcontrol">
<unix>
<config>
<serial>
<tty>127.0.0.1:12345</tty>
</serial>