[parisc-linux] serial console

[parisc-linux] serial console

[Mike Shaver]

I have a serial console cable that came with my A180C, but I can't get
the silly box to talk to it.

I've tried with another known-good cable (it works with my Indy), and
still nothing.  What do I need to do to activate it?  I tried unplugging
the web console from the network, and rebooting with the serial cable
connected and minicom running, but still no joy.

Also, is there an equivalent to Sun's L1-A or the Indy's
send-break-over-serial that will get me back to the PROM in the event
that Linux jumps to east nowhere?  Or do I have to power cycle?

Mike

-- 
275134.15 242554.19

Re: [parisc-linux] serial console

[Thomas Bogendoerfer]

On Sat, Jul 10, 1999 at 02:53:39PM -0400, Mike Shaver wrote:
> I have a serial console cable that came with my A180C, but I can't get
> the silly box to talk to it.

disconnect the web console port. Whenever I have the web console port
connected to the hub, the serial console doesn't work for. As soon
as I unplug the web console the serial console comes up immidiatly. I
haven't notice this behaviour until I got enough cables today:-)

> Also, is there an equivalent to Sun's L1-A or the Indy's
> send-break-over-serial that will get me back to the PROM in the event
> that Linux jumps to east nowhere?  Or do I have to power cycle?

So far everbody denied the existance of that essentiell (at least for
kernel hackers) feature.

Thomas.

-- 
   This device has completely bogus header. Compaq scores again :-|
It's a host bridge, but it should be called ghost bridge instead ;^)
                                        [Martin `MJ' Mares on linux-kernel]

Re: [parisc-linux] serial console

[Giles Lean]

On Mon, 12 Jul 1999 23:10:19 +0200  Thomas Bogendoerfer wrote:

> > Also, is there an equivalent to Sun's L1-A or the Indy's
> > send-break-over-serial that will get me back to the PROM in the event
> > that Linux jumps to east nowhere?  Or do I have to power cycle?
> 
> So far everbody denied the existance of that essentiell (at least for
> kernel hackers) feature.

Historically on HP servers (series 800 machines) ^B gets you to "PROM"
mode.  It has varied on different machines whether this is enabled and
disabled by a key, or a switch on the back, or is not able to be
disabled at all.

Some newer machines (some D series, all A series, all R series) don't
have this functionality out unless an "access port" card is added to
the system.  These systems do still have a TOC (Transfer of Control)
button so that dumps can be taken.

I'll dig out the part number for the access port card if anyone cares;
I don't have it to hand right now.

Regards,

Giles

[parisc-linux] serial console

[Aaron St. Pierre]

Hi all, 

	I am almost scared to ask this question, but I really dont have any
	other alternatives. 

	HP VISUALIZE - J2240 
	latest source
	latesst gcc
	kernel config - basic
	
	In any case I have the latest compilers and the latest source. I
	have gone through the booting howto and have successfully switched
	my console. Yet I cannot get any messages after : 

	Branching to kernel entry point....

	The make palo went fine, at which time i added my ramdisk and what
	not. I suspect it has something to do with my kernel since I have
	gotten the lifimage from debian and it works without a problem. 

	I must be missing something here, any help anyone could provide
	would be greatly appreciated. 

	Thanks,	

-- 
Aaron St. Pierre			tel: 978.828.6177
asp@ungod.com

 Wow, I'm being shot at from both sides.  That means I *must* be right.  :-)
              -- Larry Wall in <199710211959.MAA18990@wall.org>