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[Qemu-devel] Re: kernel 2.6.10 and qemu

From: Der Herr Hofrat
Subject: [Qemu-devel] Re: kernel 2.6.10 and qemu
Date: Tue, 10 May 2005 13:45:39 +0200 (CEST)

HI !

 so the problem whth 2.6.X and qemu on a console was is simply that 
 the default 2.6.X kernel settings is to have the serial 
 console disabled and thus no output when booting with -nographic
 2.4.X had it on by default.. The parameters (-append "root=/dev/hda") don't 
 cause any problems no matter what settings you have - they do cause kernel
 problems but they will not stop qemu. So it looks like it works fine on 
 a tty with -nographic with the following settings in 2.6.X:

make menuconfig:

 Device Driver --->
   Character Devices --->
     Serial drivers --->
       [*] Console on 8250/16550 and compatible serial port

which results in 


in the .config being set.

qemu then needs a:

 -append "console=ttyS0" 

this is necessary to get any output as qemu treats stdout on a terminal as 
serial device and not as VGA (which is what confused me).

thx for your help !

Nicholas Mc Guire                               e-mail: address@hidden
OpenTech EDV-Research GmbH                      Embedded GNU/Linux/RTLinux
Lichtenstein Str. 31 2130 Mistelbach            web   :http://www.opentech.at/
phone :+43 2572 201082                          fax   :+43 2572 201084

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