Re: Defaulting serial communication to 115200 bps for FreeBSD 14

On Tue, 15 Aug 2023 21:02:57 -0700
Cy Schubert <Cy.Schubert@cschubert.com> wrote:

> Cheers,
> Cy Schubert <Cy.Schubert@cschubert.com>
> FreeBSD UNIX:  <cy@FreeBSD.org>   Web:  https://FreeBSD.org
> NTP:           <cy@nwtime.org>    Web:  https://nwtime.org
> 
> 			e^(i*pi)+1=0
> 
>    message dated "Tue, 15 Aug 2023 17:18:37 -0400."
> Mime-Version: 1.0
> Content-Type: text/plain; charset=us-ascii
> --------
> In message <CAPyFy2DFVp1BfwwY0czHU7XRZhOLYyF1tAr7MvbmXZ6ALSD==w@mail.gmail.c
> om>
> , Ed Maste writes:
> > FreeBSD currently uses 9600 bps as the default for serial
> > communication -- in the boot loader, kernel serial console, /etc/ttys,
> > and so on. This was consistent with most equipment in the 90s, when
> > these defaults were established. Today 115200 bps seems to be much
> > more common, and I'm proposing that we make it the default for FreeBSD
> > 14.0.
> >
> > I have a review open: https://reviews.freebsd.org/D36295. There are a
> > few minor nits in the review to be addressed still but assuming
> > there's general agreement I'll iterate on those and commit this in a
> > few logical chunks.
> >
> 
> There should probably be an UPDATING entry for those who use boot0 to 
> revert back to 9600 in that case.

Not read the diff though, if the baud rate is re-initialized in boot1
or later (including btx, loader, kernel and userland) and handshake
again, most of the boot process and later would run at 115200 bps.

-- 
Tomoaki AOKI    <junchoon@dec.sakura.ne.jp>