Re: New debug kernel installation mechanism committed to HEAD
You need the following options in your kernel config file to
enable 'CR' + '~' + '^b' to ddb.
device dcons
device dcons_crom
options DCONS_FORCE_CONSOLE=1
options ALT_BEREAK_TO_DEBUGGER
Because FreeBSD-4/DragonFlyBSD doesn't support multi-console or
switching-console in kernel, dcons has to take the console
at the first stage.
Multi-console support in FreeBSD-5 is very convenient and worth to
porting to DragonFly. (as you know in loader)
/\ Hidetoshi Shimokawa
\/ simokawa@FreeBSD.org
At Fri, 22 Oct 2004 14:27:20 -0700 (PDT),
Matthew Dillon wrote:
>
>
> :Have you ever used dconschat(8) with FireWire(4)?
> :
> :It's a nice replacement of serial console and it has some advantage
> :over serial console.
> :
> :- Fast (400Mbps, theoretically)
> :- Support both console and gdb port with only one cable.
> : (serial console usually need two cables.)
> :- You can manage several target machines with only one 1394 host controller.
> : (you need to buy multiport or many USB-serial adaptors for serial console.)
> :- You can peek target memory with /dev/fwmem like /dev/mem of localhost.
> :- dcons(4) in loader(8) is now available for FreeBSD.
> :
> :gdb(4) has some example to use them.
> :It's very convenient to use /etc/eui64 to specifying a target.
> :
> :/\ Hidetoshi Shimokawa
> :\/ simokawa@FreeBSD.org
>
> I've been able to get a remote getty working over dcons, but as yet have
> been unable to get console messages to print on it or to be able to break
> into DDB from it.
>
> -Matt
>
討論串 (同標題文章)
完整討論串 (本文為第 18 之 25 篇)：