Re: [Xen-devel] Serial console on non-legacy PCI serial card?

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

Isn't the UART already enabled, since he was seeing garbage on the wire
rather than nothing?

 -- Keir

On 05/05/2009 02:31, "Yu Zhao" <yu.zhao@xxxxxxxxx> wrote:

> Please apply the attached patch to the grub-0.97, reinstall the grub
> and use the UART boot parameter you have figured out for Xen.
> 
>   kernel /boot/xen.gz com1=115200,8n1,0x1060,0 ...
> 
> Then you should get a workable serial console for Xen.
> 
> Good luck,
> Yu
> 
> On Wed, Apr 29, 2009 at 03:35:59AM +0800, Nigel Gamble wrote:
>> I have an Intel DX50SO motherboard for a Core i7 CPU which has no
>> legacy ports whatsoever, so no COM1 serial port.  I added a "SIIG
>> CyberPro PCI 1S" single serial port PCI card.
>> 
>> Linux dmesg shows it as:
>> 
>> [   30.244790] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
>> [   30.244984] serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a NS16550A
>> [   30.245287] serial 0000:06:02.0: PCI INT A -> GSI 18 (level, low) -
>>> IRQ 18
>> [   30.245459] ttyS0: detected caps 00000700 should be 00000100
>> [   30.245518] 0000:06:02.0: ttyS0 at I/O 0x1060 (irq = 18) is a
>> 16C950/954
>> [   30.245583] console [ttyS0] enabled
>> [   32.448682] ttyS2: detected caps 00000700 should be 00000100
>> [   32.454929] 0000:06:02.0: ttyS2 at I/O 0x1068 (irq = 18) is a
>> 16C950/954
>> 
>> Note that the only port actually connected to the single connecter is
>> ttyS0 at 0x1060.  I can successfully use this as the Linux serial
>> console by adding the Linux boot parameters:
>> 
>> console=uart,io,0x1060,115200n8
>> 
>> However, I'm having problems trying to get it to work as a Xen
>> console.  If I add:
>> 
>> com1=115200,8n1,0x1060,0 console=vga,com1
>> 
>> to Xen, I do get some output to the port, but all the characters look
>> like this:
>> 
>> .<.....~.o....¼..4.|.a.½¬o.§¼4.#.ÿ.......ö4..¬.... 4.  .
>> 4Ä...T.Ä ..¼.Ä ....<.
>> 
>> Can anyone help me to get this to work?
>> 
>> Thanks,
>> Nigel
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-devel



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