Re: [Xen-ia64-devel] serial console settings on Tiger4

["KUWAMURA Shin'ya" <kuwa@xxxxxxxxxxxxxx>]

>>>>> On Thu, 8 Feb 2007 17:39:22 +0900
>>>>> horms@xxxxxxxxxxxx(Horms)  said:
> 
> On Thu, Feb 08, 2007 at 05:29:34PM +0900, KUWAMURA Shin'ya wrote:
> > Hi all,
> > 
> > At xen-ia64-unstable:13867, the serial console connected to my Tiger4
> > machine outputs no messages. Do anyone have any ideas?
> > Cset:13773 is good.
> > 
> > My setting:
> >   append="dom0_mem=2G com2=115200,8n1 console=com2,vga tbuf_size=8 \
> >           dom0_max_vcpus=2 -- console=tty0 console=ttyS1,115200,8n1 \
> >           rhgb root=/dev/sda2"
> > 
> Its been a while since I used a Tiger4, but when I did, I believe this
> worked. (Non console related bits removed)
> 
> append="com2=115200,8n1,0x2f8,0 console=com2 cdb=com2 " \
>        "-- console=tty0 console=ttyS0,115200n8 console=ttyS1,115200n8"
> 
> (I don't think the console=ttyS1,115200n8 bit is needed)
> 
> More recently I have been using a Tiger2, where the following works.
> Its pretty similar to the line above, which seems to indicate
> it is correct.
> 
> append="com2=115200,8n1,0x2f8,0 console=com2 " \
>        "-- console=tty0 console=ttyS0,115200"

Thank you for your information, but unfortunately the setting
"com2=115200,8n1,0x2f8,0 console=com2" do not work on my Tiger4.

>>>>> On Thu, 08 Feb 2007 06:23:30 -0700
>>>>> alex.williamson@xxxxxx(Alex Williamson)  said:
> 
>    Check this changeset:
> 
> http://xenbits.xensource.com/ext/xen-ia64-unstable.hg?cs=7efb3a06c56a
> 
> It seemed like a trivial patch, so I didn't send it out.  Sorry if
> that's what broke you.  If reverting that changeset fixes things, could
> you see if there's a better way to do what that changeset attempts to
> do?  I don't have a working Tiger4 system to test with.  Thanks,

Thank you for your information.
It works fine when I revert this changeset.

On Tiger4, the following message outputs:
  ERROR: I/O base address must be specified.
This error is written by ns16550_parse_port_config() at
xen/drivers/char/ns16550.c if iobase == 0.

I think that In case of Tiger4 ns16550_com1.io_base is 0, so the code
to initialize com2 does not run.

# Notice that Tiger4 has one serial port.

Best Regards,
-- 
  KUWAMURA Shin'ya

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