rpi3 and Adafruit GPS Hat

[Diane Bruce]

On Wed, Jul 18, 2018 at 05:10:16PM +0200, Per olof Ljungmark wrote:
> Being a complete newbie to arm I thought a nice project would be to
> build a NTP server with the parts in the subject line.
> 
> Unfortunately I have almost no idea where to start, it seems FreeBSD for
> arm have shifted around quite a bit, almost none of the googled pages I
> find has relevance, and to add insult to injury, the Pi project
> apparently shifted the serial ports around for the Pi3.
> 
> What I need to achieve,
> 
> - Stop the kernel to use the uart for console output (I have ethernet
> and HDMI connected)

No need.

change your config.txt

#dtoverlay=pi3-disable-bt
device_tree_address=0x4000
kernel=u-boot.bin
enable_uart=1

This moves the console port to the less capable micro uart port
this will free up the good uart (the pl011 device) as /dev/ttyu0

Remove the pi3-disable-dt in config.txt
enable_uart=1 is needed.

> VERY grateful if someone that knows better can give me a push in the
> right direction for up to date information.
..

This is assuming you use FreeBSD-12 (Head of tree)

> -- 
> Per olof Ljungmark

Diane
-- 
- db at FreeBSD.org db at db.net http://www.db.net/~db