On Tue, May 22, 2007 at 10:28:13PM -0600, Alex Williamson wrote:
> On Wed, 2007-05-23 at 12:49 +0900, Simon Horman wrote:
> > Hi,
> >
> > I've been trying to hunt down a problem with the serial console on the
> > HP RX2620, whereby after kexec the console doesn't accept input,
> > although it does produce output quite happily. I should also note that
> > this problem does not manifest on the Tiger2 machine I have.
>
> Hi Simon,
>
> Are you using the serial console on the management processor or the
> one off the motherboard? (if the MP, ctrl-b does something, otherwise
> esc-( and esc-) do something) All the HP boxes setup their console in
> Xen through efi_setup_pcdp_console(). You likely wouldn't be getting
> console output if you weren't getting there at all, but perhaps
> something is going wrong setting up the IRQ. The MP console is a PCI
> UART and will use the generic interrupt polarity triggers, while the
> motherboard UART is special cased in pcdp_hp_irq_fixup(). The HP system
> will require a working IOSAPIC for the interrupt whereas the Tiger might
> make due with some kind of legacy interrupt routing. Since the IOSAPICs
> aren't enumerated till later, the interrupt isn't setup till fairly late
> in start_kernel(). If you're trying to get input before that, it won't
> work. Hopefully you can trace through those paths and find something
> missing. Thanks,
Hi Alex,
thanks for the ideas, I'll see what I can find :-)
--
Horms
H: http://www.vergenet.net/~horms/
W: http://www.valinux.co.jp/en/
_______________________________________________
Xen-ia64-devel mailing list
Xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-ia64-devel
|
Home