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

[Ross Philipson <Ross.Philipson@xxxxxxxxxx>]

Perhaps you need to specify the crystal frequency of the device. The parameter 
would look like:

com1=115200/<frequency>,8n1,0x1060,0 console=vga,com1

Of course I don't know what it might be for this card.

Thanks
Ross



-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Nigel Gamble
Sent: Tuesday, April 28, 2009 3:36 PM
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] Serial console on non-legacy PCI serial card?

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
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