OpenFirmware framebuffer

OpenFirmware framebuffer

[Matt Sealey]

I just booted up my Pegasos and tried the offb driver for display and was
rather disappointed. It just displays 4 lines about HID0 and stuff and then
waits around.

Is this all there is? Is there nothing more? Can't I get a scrolling kernel
output, and a penguin logo or am I missing the point? :)

-- 
Matt Sealey <matt@genesi-usa.com>
Manager, Genesi, Developer Relations

Re: OpenFirmware framebuffer

[Nathan Lynch]

Matt Sealey wrote:
> 
> I just booted up my Pegasos and tried the offb driver for display and was
> rather disappointed. It just displays 4 lines about HID0 and stuff and then
> waits around.
> 
> Is this all there is? Is there nothing more? Can't I get a scrolling kernel
> output, and a penguin logo or am I missing the point? :)

Maybe someone can help if you give more details, e.g. the kernel
version, and exactly what messages are displayed before it hangs.

RE: OpenFirmware framebuffer

[Matt Sealey]

Gentoo 2.6.15-r5 from the 2006.0 install CD.

It says "Welcome to Linux gentoo-2.6.15-r5" and then I see four
lines, MSR, HID0 and hex printout of each.

That's it.

I get the usual messages spooled to the serial console. My args are;

boot cd /boot/pegasos console=ttyS1,115200,8n1 console=tty0 init=/linuxrc looptype=squashfs loop=/image.squashfs udev nodevfs cdroot
root=/dev/ram0 video=ofonly

-- 
Matt Sealey <matt@genesi-usa.com>
Manager, Genesi, Developer Relations


> -----Original Message-----
> From: Nathan Lynch [mailto:ntl@pobox.com] 
> Sent: Tuesday, June 13, 2006 11:11 AM
> To: Matt Sealey
> Cc: linuxppc-dev@ozlabs.org
> Subject: Re: OpenFirmware framebuffer
> 
> Matt Sealey wrote:
> > 
> > I just booted up my Pegasos and tried the offb driver for 
> display and 
> > was rather disappointed. It just displays 4 lines about 
> HID0 and stuff 
> > and then waits around.
> > 
> > Is this all there is? Is there nothing more? Can't I get a 
> scrolling 
> > kernel output, and a penguin logo or am I missing the point? :)
> 
> Maybe someone can help if you give more details, e.g. the 
> kernel version, and exactly what messages are displayed 
> before it hangs.
> 
> 

Re: OpenFirmware framebuffer

[David Woodhouse]

On Tue, 2006-06-13 at 10:26 -0500, Matt Sealey wrote:
> I just booted up my Pegasos and tried the offb driver for display and was
> rather disappointed. It just displays 4 lines about HID0 and stuff and then
> waits around. 

I didn't think the Pegasos firmware supported framebuffer?

-- 
dwmw2

RE: OpenFirmware framebuffer

[Benjamin Herrenschmidt]

On Tue, 2006-06-13 at 11:27 -0500, Matt Sealey wrote:
> Gentoo 2.6.15-r5 from the 2006.0 install CD.
> 
> It says "Welcome to Linux gentoo-2.6.15-r5" and then I see four
> lines, MSR, HID0 and hex printout of each.
> 
> That's it.
> 
> I get the usual messages spooled to the serial console. My args are;
> 
> boot cd /boot/pegasos console=ttyS1,115200,8n1 console=tty0 init=/linuxrc looptype=squashfs loop=/image.squashfs udev nodevfs cdroot
> root=/dev/ram0 video=ofonly

Send us a copy of your dmesg log. Also, does the pegasos firmware
creates a "display" node in OF with the right type and properties ?

Ben.

RE: OpenFirmware framebuffer

[Matt Sealey]

> Send us a copy of your dmesg log. Also, does the pegasos 
> firmware creates a "display" node in OF with the right type 
> and properties ?

dmesg log might be a bit clumsy to get but I will try.

Please tell me what the display node should have? I can check that. I
am curious though as it does seem to have worked.. it uses the mode I
set in firmware, cleans the screen and prints a message to display..
just not MUCH of a message. With previous "broken" firmware and kernels
I would get a garbage screen with the chrp_boot messages on it, but
yesterday this new message (welcome to Linux.. MSR, HID0 printout) was
a welcome change, but.. not a console so much as "not a blank screen".

dmws2: the current released firmware doesn't. But I get to test out all
these new broken features.. :3

-- 
Matt Sealey <matt@genesi-usa.com>
Manager, Genesi, Developer Relations

RE: OpenFirmware framebuffer

[Benjamin Herrenschmidt]

On Wed, 2006-06-14 at 09:07 -0500, Matt Sealey wrote:
> > Send us a copy of your dmesg log. Also, does the pegasos 
> > firmware creates a "display" node in OF with the right type 
> > and properties ?
> 
> dmesg log might be a bit clumsy to get but I will try.
> 
> Please tell me what the display node should have? I can check that. I
> am curious though as it does seem to have worked.. it uses the mode I
> set in firmware, cleans the screen and prints a message to display..
> just not MUCH of a message. With previous "broken" firmware and kernels
> I would get a garbage screen with the chrp_boot messages on it, but
> yesterday this new message (welcome to Linux.. MSR, HID0 printout) was
> a welcome change, but.. not a console so much as "not a blank screen".
> 
> dmws2: the current released firmware doesn't. But I get to test out all
> these new broken features.. :3

Better, send me a firmware image and I'll check what's up on my
pegasos :)

Ben.

RE: OpenFirmware framebuffer

[Matt Sealey]

Ben,

Please talk to Sven for a version, he is best to make sure you get something
that doesn't explode something you both know is important :) 

-- 
Matt Sealey <matt@genesi-usa.com>
Manager, Genesi, Developer Relations


> -----Original Message-----
> From: Benjamin Herrenschmidt [mailto:benh@kernel.crashing.org] 
>
> Better, send me a firmware image and I'll check what's up on 
> my pegasos :)