Booting Xen on IA64 (for Dan Magenheimer)

Booting Xen on IA64 (for Dan Magenheimer)

[Philippe Berthault]

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Dan,

I have tried to boot Xen on my old Lion system, with your xen.good
and xenlinux.good downloaded from ftp://ftp.hpl.hp.com/pub/xen-ia64

The symptom is the same as with xen and Linux I have compiled myself:
    Loading xen.good... Loading Linux... ..done
    Loading initrd xenlinux.good... done

At this point, the system is stopped.
There is no activity on disks and no activity on CPUs.
I have tried several configurations, with and without serial console,
and the symptom is always the same.

Questions:
1) How is it possible to progress at this point ?

2) I haven't understand your answer about "initrd" ?
I have seen that Havard also uses the "initrd" directive, with success.

> Also, I've never seen the initrd message before from Xen/ia64. Elilo loads
xenlinux as
> the initrd so xenlinux (currently) can't support modules. Perhaps your
elilo.conf
> needs to be changed?

=======================================================
Here, my "elilo.conf" file :

    prompt
    timeout=50
    default=linux

    image=vmlinuz-2.4.21-21.EL
        label=linux
        description="RH EL-AS3 standard (default)"
        initrd=initrd-2.4.21-21.EL.img
        read-only
        append="root=LABEL=/"

    image=xen
        label=xen
        description="Xen 2.6.7 and Linux kernel 2.6.9"
        initrd=vmlinuz-2.6.9
        read-only
        append="nomca console=tty0 root=LABEL=/"

    image=xen.good
        label=xenhp
        description="xen.good & xenlinux.good binaries from HP"
        initrd=xenlinux.good
        read-only
        append="nomca console=tty0 root=LABEL=/"

Thanks,
Philippe.

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Re: Booting Xen on IA64 (for Dan Magenheimer)

[Håvard Bjerke]

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On Thu, Jan 13, 2005 at 06:02:25PM +0100, Philippe Berthault wrote:
> 
> 2) I haven't understand your answer about "initrd" ?
> I have seen that Havard also uses the "initrd" directive, with success.

That's true

> 
> =======================================================
> Here, my "elilo.conf" file :
> 
[...]
> 
>     image=xen.good
>         label=xenhp
>         description="xen.good & xenlinux.good binaries from HP"
>         initrd=xenlinux.good
>         read-only
>         append="nomca console=tty0 root=LABEL=/"

Try using append="nomca console=tty0 console=ttyS0 root=LABEL=/"

Then connect to the serial port and see what's happening.

Håvard


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Re: Booting Xen on IA64 (for Dan Magenheimer)

[Dan Magenheimer]

The low-level serial output code in Xen/ia64 is likely
not working on your old Lion box.  The current serial output
code is a temporary hack and is probably not widely portable.
My plan is to replace it with the new early uart code added
to Linux/ia64 in 2.6.10 which should be more generic and
well-structured, but still may not support old Lion boxes.

If you or someone you work with is adept at low-level
serial port code and could write assembly to force output
to go to one of the Lion serial ports, I can show you how
to substitute it (see xen/include/asm-ia64/xenserial.h and
xen/arch/ia64/xenasm.S).  Otherwise it will be difficult to
make any progress until your Itanium2 "new shoes" arrive :-)

Dan

P.S. My comment about initrd was a mistake.  I saw vmlinuz.gz
and somehow understood it as initrd.gz. Sorry for misleading.




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