Graphical desktop, l4con, mag

Matthias Lange matthias.lange at kernkonzept.com
Wed Jun 18 14:14:36 CEST 2014


On Mon, Jun 16, 2014 at 11:12:22AM -0400, teclis High Elf wrote:
> I'm not sure its IO and the frame buffer memory. It fails on X86EMU_exec()
> in x86emu_int10_set_vbemode() called from Vesa_fb::setup_drv() before the
> first call to l4io_request_iomem()

Are testing your setup on qemu? In that case the VGA bios may attempt to
access the Qemu debug IO port at 0x402. You can try adding that port to the
VGA device.

Matthias.

> 
> 
> On Tue, Jun 10, 2014 at 5:17 PM, Adam Lackorzynski <
> adam at os.inf.tu-dresden.de> wrote:
> 
> > On Tue Jun 10, 2014 at 14:20:54 -0400, teclis High Elf wrote:
> > > Ok I solved the build problem. This command:
> > >
> > >
> > > *svn cat http://svn.tudos.org/repos/oc/tudos/trunk/repomgr
> > > <http://svn.tudos.org/repos/oc/tudos/trunk/repomgr> | perl - init
> > > http://svn.tudos.org/repos/oc/tudos <http://svn.tudos.org/repos/oc/tudos
> > >
> > > fiasco l4re*
> > >
> > > from: http://l4re.org/download.html doesn't grab all the l4 packages.
> >
> > Indeed, it only checks out a subset. To fetch all, 'all' could be
> > specified instead of 'fiasco l4re'.
> >
> > > I downloaded the latest tarball snapshot and they were all there.
> >
> > The other possibility.
> >
> > > and it built ok. Now when it runs fbdrv page faults. Has anyone seen this
> > > before? danke
> > >
> > > fbdrv   | Trying execution of ``set VBE mode'' using x86emu
> > > fbdrv   | Found VESA BIOS version 2.0
> > > fbdrv   | OEM VGABIOS Cirrus extension
> > > fbdrv   | Scanning for 'best' possible mode:
> > > fbdrv   | Trying to read DDC info
> > > fbdrv   | DDC function not supported
> > > fbdrv   | EDID not available (-19), finding best possible mode ...
> > > fbdrv   | Mode: 0x101     640x480 at 8, RGB: 0(0):0(0):0(0) mode: bb
> > > fbdrv   | Mode: 0x110    640x480 at 15, RGB: 10(5):5(5):0(5) mode: bb
> > > fbdrv   | Mode: 0x111    640x480 at 16, RGB: 11(5):5(6):0(5) mode: bb
> > > fbdrv   | Mode: 0x112    640x480 at 24, RGB: 16(8):8(8):0(8) mode: bb
> > > fbdrv   | Mode: 0x103     800x600 at 8, RGB: 0(0):0(0):0(0) mode: bb
> > > fbdrv   | Mode: 0x113    800x600 at 15, RGB: 10(5):5(5):0(5) mode: bb
> > > fbdrv   | Mode: 0x114    800x600 at 16, RGB: 11(5):5(6):0(5) mode: bb
> > > fbdrv   | Mode: 0x115    800x600 at 24, RGB: 16(8):8(8):0(8) mode: bb
> > > fbdrv   | Mode: 0x105    1024x768 at 8, RGB: 0(0):0(0):0(0) mode: bb
> > > fbdrv   | Mode: 0x116   1024x768 at 15, RGB: 10(5):5(5):0(5) mode: bb
> > > fbdrv   | Mode: 0x117   1024x768 at 16, RGB: 11(5):5(6):0(5) mode: bb
> > > fbdrv   | Mode: 0x118   1024x768 at 24, RGB: 16(8):8(8):0(8) mode: bb
> > > fbdrv   | Mode: 0x107   1280x1024 at 8, RGB: 0(0):0(0):0(0) mode: bb
> > > fbdrv   | Mode: 0x119  1280x1024 at 15, RGB: 10(5):5(5):0(5) mode: bb
> > > fbdrv   | Mode: 0x11a  1280x1024 at 16, RGB: 11(5):5(6):0(5) mode: bb
> > > fbdrv   | Choosen mode:
> > > fbdrv   | Mode: 0x11a  1280x1024 at 16, RGB: 11(5):5(6):0(5) mode: bb
> > > fbdrv   | To force a specific setting use a '-m <mode>' option.
> > > fbdrv   | L4Re[rm]: mapping for page fault failed with -34 @1a0000
> > > pc=1006452
> > > fbdrv   | L4Re: unhandled exception: pc=0x1006452
> >
> > This looks like io does not like to hand out the framebuffer memory.
> > Any change when specifying, for example, -m 0x114 ?
> > Does io say something noteworthy, possibly with some -v options
> > supplied?
> >
> >
> >
> > Adam
> > --
> > Adam                 adam at os.inf.tu-dresden.de
> >   Lackorzynski         http://os.inf.tu-dresden.de/~adam/
> >
> > _______________________________________________
> > l4-hackers mailing list
> > l4-hackers at os.inf.tu-dresden.de
> > http://os.inf.tu-dresden.de/mailman/listinfo/l4-hackers
> >

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Matthias Lange, matthias.lange at kernkonzept.com, +49 - 351 - 41 88 86 14

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