Using the following cmdline i get output from Xen
append="com1=115200,8n1,0xff5e0000,9 -- console=ttyS0,115200 root=/dev/ sda2"
But it's not looking good:
(XEN) vcpu_ttag: ttag instruction unsupported
(XEN) $$$$$ PANIC in domain 0 (k6=f0000000040a8000): ia64_do_page_fault:
@0000000000000000??)
(XEN) BUG at domain.c:305
(XEN) $$$$$ PANIC in domain 0 (k6=f0000000040a8000): psr.ic off, delivering
fault=5300,iip=a0
(XEN) *** ADD REGISTER DUMP HERE FOR DEBUGGING
(XEN) BUG at domain.c:305
The Xenlinux image I'm using works in older Xens.
Haavard
On Mon, Jun 06, 2005 at 08:59:10AM -0700, Magenheimer, Dan (HP Labs Fort
Collins) wrote:
> There were some changes made recently in core Xen involving
> the serial port. The latest Xen/ia64 from xeno-unstable.bk
> contains these changes and some additional changes to
> the ia64-specific files to accommodate the core changes.
>
> The core changes are very particular about the format
> of the command line -- I'm not sure I fully understand
> yet what variations work and what variations don't work.
> If it doesn't work, there is no way to put out an error
> message (though the core Xen code trys to :-)
>
> Here's what I think works: (This will find its way into
> a README file soon.)
>
> 1) If your machine supports EFI PCDP (I'm told many HP
> machines do), Xen/ia64 will attempt to read console
> information directly out of EFI HCDP. In some cases
> it can figure out the console, in others it can't.
> If it can, the command line for Xen should be the
> same as before, meaning no explicit console... the
> entire command line is passed to domain0.
>
> So your elilo.conf file may have something like this:
>
> image=xen
> label=xen
> initrd=xenlinux
> read-only
> append="console=ttyS0,115200 root=/dev/sda2"
>
> 2) If your machine doesn't support PCDP (or does but
> Xen can't figure it out), the Xen console must be
> provided in a very specific format. The Xen command
> line is now separated from domain0 in the elilo.conf
> file using a double-dash:
>
> xenarg1 xenarg2 -- dom0arg1 dom0arg2 domarg3
>
> The Xen console must be specifed as
> comX=baud,bits,addr,irq, for example:
>
> com1=115200,8n1,0xff5e0000,9
>
> This works on my machine. The following works on
> another machine with an SMP (management card):
>
> com1=115200,8n1,0xf4050000,9
>
> So your elilo.conf file may have something like this:
>
> image=xen
> label=xen
> initrd=xenlinux
> read-only
> append="com1=115200,8n1,0xff5e0000,9 -- console=ttyS0,115200
> root=/dev/sda2"
>
> If you specify any com1= parameter in the Xen part, this
> overrides any attempt for Xen to try to use PCDP.
>
> Note that the irq number will be necessary for keyboard
> input which doesn't currently work in Xen/ia64 so is
> a no-op right now.
>
> 3) If your box is PC-compliant (most Intel boxes I'm told),
> the default Xen core code may just work... I don't think
> any Xen command line needs to be specified.
>
> This is all brand new so is subject to change.
>
> Dan
>
> > -----Original Message-----
> > From: Haavard Bjerke [mailto:havard.bjerke@xxxxxxx]
> > Sent: Sunday, June 05, 2005 7:23 AM
> > To: Magenheimer, Dan (HP Labs Fort Collins)
> > Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
> > Subject: Re: [Xen-devel] Please pull xen-ia64 bits
> >
> > I've lost console output from the hypervisor with this latest
> > bk pull. Is this because of the latest serial work? I tried
> > changing the command line to append="comx=115200 console=comx
> > -- nomca console=tty0 console=ttyS0,115200 root=/dev/sda2 "
> > with x in 0 through 2, but no dice. I've also tried
> > "com2=57600,8n1 console=com2". The cmd line that worked
> > before, was "nomca console=tty0 console=ttyS0,115200 root=/dev/sda2".
> >
> > Dom0 still works as before.
> >
> > Haavard
> >
> > On Fri, Jun 03, 2005 at 08:25:23AM -0700, Magenheimer, Dan
> > (HP Labs Fort Collins) wrote:
> > > A couple more fixes for the recent include file cleanup
> > > (when CONFIG_VTI is on) and one fix for the recent cpumask
> > > cleanup.
> > >
> > > Please pull:
> > > bk://xen-ia64.bkbits.net/xeno-unstable-ia64.bk
> > >
> > > Thanks,
> > > Dan
> > >
> > > _______________________________________________
> > > Xen-devel mailing list
> > > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > > http://lists.xensource.com/xen-devel
> >
--
Håvard K. F. Bjerke
http://www.idi.ntnu.no/~havarbj/
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