Running the IO server

Anna Fischer anna.fischer at hp.com
Tue Jul 12 11:18:00 CEST 2011


On Mon, 2011-07-11 at 21:34 +0000, Adam Lackorzynski wrote:
> Hi Anna,
> 
> On Mon Jul 11, 2011 at 16:43:58 +0100, Anna Fischer wrote:
> > I'm trying to run the ARM-based frame buffer configuration from
> > conf/examples/arm-rv-lcd.cfg with pkg/io/config/arm-rv-eb-mc.devs and
> > QEMU (-M realview-pbx-a9). I can boot the L4 Linux kernel on this
> > (without GUI but just serial I/O) configuration, but I get an error when
> > trying to set up the LCD (see below). 
> > 
> > Perhaps the LCD device configuration from the .devs file does not match
> > what hardware QEMU emulates? How can I actually enumerate in the IO
> > server what hardware it actually runs on? Is there a way to do that?
> > 
> > MOE: rom name space cap -> [C:501000]
> >   BOOTFS: [1190000-11906bb] [C:503000] arm-rv-lcd.cfg
> >   BOOTFS: [1191000-119159d] [C:504000] arm-rv-eb-mc.devs
> >   BOOTFS: [1192000-11920e4] [C:505000] arm-rv-lcd.io
> >   BOOTFS: [1193000-11ac510] [C:506000] l4re
> >   BOOTFS: [11ad000-1287b58] [C:507000] io
> >   BOOTFS: [1288000-12db1b8] [C:508000] ned
> >   BOOTFS: [12dc000-13055b8] [C:509000] fb-drv
> >   BOOTFS: [1306000-139346c] [C:50a000] mag
> >   BOOTFS: [1394000-13b5c7c] [C:50b000] ex_fb_spectrum
> > MOE: cmdline: moe rom/arm-rv-lcd.cfg
> > MOE: Starting: rom/ned rom/arm-rv-lcd.cfg
> > MOE: loading 'rom/ned'
> > Ned says: Hi World!
> > Ned: loading file: 'rom/arm-rv-lcd.cfg'
> > IO      | Io service
> > mag     | libio: Warning: Finding 'icu' in system bus failed with 'Void
> > capability invoked'
> 
> I think the problem is 'just' that io hides its error messages when not
> being fed with -v (just corrected). Thus we do not see the proper output
> which I guess says that it cannot find one of the config files. Did you
> also change the file name in arm-rv-lcd.cfg? Anyway, on Qemu
> arm-rv-eb.devs is the right one, as unlike on hardware Qemu takes the
> realview-eb interrupt configuration also on pbx so that PS/2 works with
> this setup. It does not matter for the LCD.
> To see what io knows, add more -v's to it.

Thanks, the problem was in the .cfg I forgot the "rom/" in the path name
to the files. Now it boots just fine. 

Cheers,
Anna






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