On Sat, Mar 06, 2010 at 08:09:15PM +0100, Otto Moerbeek wrote:
> On Sat, Mar 06, 2010 at 08:55:39PM +0200, Lars Nooden wrote:
>
> > What is the appropriate way to have bsd.rd (current) use only the
> > serial interface for loongson?
> >
> > The current FAQ 7 does not outline the extra steps needed beyond
> > changing /etc/ttys
> >
> > /Lars
>
> The steps are outlined in INSTALL.loongson. You'll need to set some
> pmon variables. There might be a problem in the latest snap, though,
> the speed setting in /etc/ttys are wrong. I'll have to check how to
> circumvent that, if needed.
>
> -Otto
It truns out circumvention is not needed, since bsd.rd does not have /etc/ttys.
To quote the install notes:
On the Fuloong 2F, getting PMON to use the serial console
is tricky, due to PMON bugs and design decisions made by
Lemote.
PMON's default serial speed is 115200, and OpenBSD will
also use that speed. By default, it is possible to use
serial input if no USB keyboard is attached. PMON will
nevertheless display output its on the VGA display.
To get full serial access, the first step is to boot
into PMON> with both serial console and VGA display but
no USB keyboard attached.
You can type on the serial console, but output will be shown
on the VGA display. Next enter the following
commands:
PMON> set novga 1
PMON> set nokbd 1
PMON> set al ""
PMON> set ShowBootMenu no
If you have a dual boot setup, mount the Linux boot partition
and rename /boot/boot.cfg so that it does not get found by
PMON. This will enable full serial access to PMON on
the Fuloong 2F.
This works for me, tested in a slighly different setup, with al set to
the openbsd bootloader in the ext2 filesystem, and no bsd set and then
reading bsd.rd form the root ffs file system:
...
Secondary cache size 512kb
booting:
The boot.cfg not existed!System will try default entry from al.
AUTO
Loading file: /dev/fs/e...@wd0/boot/boot (elf)
(elf)
0x81e20000/42224 + 0x81e2a4f0/4400(z) +
Entry address is 81e201d0
zero at v0 v1 a0 a1 a2 a3
00000000 00000000 00000000 00000000 00000005 aff7fcd0 aff7fce8 800c6980
t0 t1 t2 t3 t4 t5 t6 t7
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
s0 s1 s2 s3 s4 s5 s6 s7
00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
t8 t9 k0 k1 gp sp s8 ra
00000000 00000000 00000000 00000000 00000000 aff7fcb0 00000000 80085690
>> OpenBSD/loongson BOOT 0.2
boot> bsd.rd
bsd.rd
booting wd0a:bsd.rd: 7060000+483040 [58+181032+109475]=0x778a90
Found Lemote Fuloong, setting up.
Initial setup done, switching console.
[ using 291216 bytes of bsd ELF symbol table ]
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
Copyright (c) 1995-2010 OpenBSD. All rights reserved. http://www.OpenBSD.org
OpenBSD 4.7-beta (RAMDISK) #0: Mon Mar 1 17:52:41 CET 2010
...
