On Wed, Mar 03, 2010 at 01:44:05PM -0700, Joey Korkames wrote:
>> Usually, in BSD, you pass -P or -h to the /boot/loader in boot.config.
>> But since that loader is now completely bypassed in the boot process,
>> that doesn't work. I haven't found in the FreeBSD documentation what
>> -P/-h actually *does* at the machine level, or rather if it passes
>> "commandline" arguments to the kernel or what not.
>>
>> Basically, I need to do two things:
>>
>> 1. i need to enable the serial console. this is usually done at the
>> loader level, with the -h flag, or at compile time, using the 0x30 flag
>> on the sio driver
>
> In /boot/grub/grub.cfg, I use:
>
> menuentry "FreeBSD:blockdev_fs:da0s1a" {
> insmod bsd
> echo "Loading kernel: /boot/kernel/kernel ..."
> kfreebsd /boot/kernel/kernel -D -h
> kfreebsd_loadenv /boot/device.hints
> set kFreeBSD.vfs.root.mountfrom=:/dev/da0s1a
> echo "Booting: FreeBSD:blockdev_fs:da0s1a"
> }
>
> If you go to the GRUB2 command prompt (ESC key) and type "kfreebsd
> --help", you'll get a listing of all supported boot options, mostly
> corresponding with http://www.freebsd.org/cgi/man.cgi?query=boot
Excellent tip! Thanks! I didn't expect anybody to be as crazy as me at
this point... ;)
Unfortunately, that doesn't seem to be working: everything still seems
to be blocked... This is my grub.conf entry:
+--------------------------------------------------------------------------+
| insmod ufs2 |
| insmod bsd |
| set root=(hd0,1) |
| search --no-floppy --fs-uuid --set 4b81dce84e75710d |
| echo Loading kernel of FreeBSD 7.2-1-686 ... |
| kfreebsd /boot/kfreebsd-7.2-1-686.gz -D -h |
| kfreebsd_module_elf /lib/modules/7.2-1-686/acpi.ko |
| kfreebsd_loadenv /boot/device.hints |
| set kFreeBSD.vfs.root.mountfrom=ufs:/dev/ad0s1 |
| set kFreeBSD.vfs.root.mountfrom.options=rw |
+--------------------------------------------------------------------------+
(As seen from the grub prompt.)
I tried reconnecting to the console in 9600 baud, no luck either...
Maybe the problem is with the bitrate, but I feel the kernel just
freezes because i don't see disk activity and the machine doesn't seek
an IP through DHCP...
>> 2. i need to specify the speed of the port. this is usually done in
>> config options or at compile time.
>
> I have had very little luck with this. Usually when something in the freebsd
> documentations says that you can change baud rate at runtime with a flag,
> I find that I have to recompile the relevant code with a macro or
> env-variable changed.
> I end up sticking with the 9600 baud default.
Yeah, that's probably a better idea... Unfortunately, the default
bitrate on the soekris is this odd 19200 thing, so the BIOS appears
there only.. I'll try to turn everything to 9600.
>> I tried setting hint.sio.0.flags="0x30" along with the other environment
>> in grub, without any luck.
>
> Note the kfreebsd_loadenv on device.hints above, without it sio() (or uart() for FreeBSD 8)
> won't start on the serial port and you won't get a console.
> You can try setting your flags in there to see if you can change the baud rate.
Yay! So how do I recompile *that* kernel now? :)
>> Is there any way I can just
>> revert back to the regular /boot/loader quickly?
>
> In /boot/grub/grub.cfg, I use:
>
> menuentry "BTX client: /boot/freebsd/loader" {
> insmod bsd
> echo "Loading btx client: /boot/freebsd/loader ..."
> kfreebsd /boot/freebsd/loader -D -h
> echo "Booting: BTX client: /boot/freebsd/loader"
> }
Hum... I don't seem to have /boot/freebsd/loader (or /boot/freebsd/ for
that matter), in which package is it now?
Thanks a lot for answering!
A.
--
Antoine Beaupré
Réseau Koumbit Networks
+1.514.387.6262
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