Re: not working /dev/console

On Mon, Dec 16, 2024, 7:32 AM Daniel Braniss <danny@cs.huji.ac.il> wrote:

>
>
> On 16 Dec 2024, at 16:15, Ronald Klop <ronald-lists@klop.ws> wrote:
>
>
> *Van:* Kurt Jaeger <pi@freebsd.org>
> *Datum:* maandag, 16 december 2024 14:34
> *Aan:* Warner Losh <imp@bsdimp.com>
> *CC:* John Baldwin <jhb@freebsd.org>, Daniel Braniss <danny@cs.huji.ac.il>,
> Freebsd-stable List <stable@freebsd.org>
> *Onderwerp:* Re: not working /dev/console
>
> Hi!
>
> > > > can you tell more on how to fix this ?
>
> > > > APU version apu1 lost their ability to have a serial console
> > > > in 14.2.
>
> > > hw.acpi.override_isa_irq_polarity=1
> > >
> > > in /boot/loader.conf
> > >
> > > changed the value after reboot, but the serial console is still lost.
> >
> > Are the serial ports there at all? APU needs hints now for that.
>
> They are not. As the hardware did not change (I did not unsolder
> some chips from the board 8-), I guess that's what I'm asking:
>
> How can I tell the kernel that the serials are still there ?
>
> The system boots via serial, and then stops displaying any
> kernel output.
>
> --
> pi@FreeBSD.org         +49 171 3101372                  Now what ?
>
> ------------------------------
>
>
>
> Does this note from /usr/src/UPDATING help?
>
> 20240715:
>         We now lean more heavily on ACPI enumeration for some traditional
>         devices. uart has moved from isa to acpi so the hints act as wiring
>         instead of device enumeration. Hints for parallel port, floppy, etc
>         have been removed.  Before upgrading, grep your dmesg for lines
> like:
>                 uart1: non-PNP ISA device will be removed from GENERIC in
> FreeBSD 15.
>         to see if you need to start including hints for the device on isa
>         in your loader.conf or device.hints file. APU1 (but not APU2)
> boards
>         are known to be affected, but there may be others.
>
>
> The problem is also on APU2, and fixing the hint.uart.0=“isa”
> got my serial console back!
>

FWIW, I've had several reports that APU2 with up of date firmware diesnot
have this issue. APU was the only system to come up more than once, and the
only one made after maybe 2010 or so.

Warner

So thanks to all of you!
>
> Danny
>
>
> I don't know if this note was MFC'ed to stable.
>
> https://github.com/freebsd/freebsd-src/commit/63e282288ed84387d2ec75ba8df7d7d004536781
>
> You might try to put something like this in /boot/device.hints (or
> /boot/loader.conf?):
> hint.uart.0.at="isa"
> hint.uart.0.port="0x3F8"
> hint.uart.0.flags="0x10"
> hint.uart.0.irq="4"
> hint.uart.1.at="isa"
> hint.uart.1.port="0x2F8"
> hint.uart.1.irq="3"
>
>
> Regards,
> Ronald.
>
>
>
>