Console output to framebuffer device: how?

Console output to framebuffer device: how?

[Paolo Scaffardi]

I wrote a framebuffer device that i included in the kernel, but i dont know
how to redirect the output of the console to my framebuffer device instead
of the serial console.

During the startup the kernel initializes the framebuffer correctly, and
says:

"Console: switching to frame buffer device"

but nothing happens on it and the output is given only to serial console.

What should i do to make it work correctly, now?

Best regards,
Paolo Scaffardi (arsenio@tin.it - pscaffardi@supereva.it)
AIRVENT SAM s.p.a. - RIMINI (ITALY)
Tel. 0541 383294 - Fax 0541 387086


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Re: Console output to framebuffer device: how?

[ben bodley]

Paolo Scaffardi wrote:

> I wrote a framebuffer device that i included in the kernel, but i dont know
> how to redirect the output of the console to my framebuffer device instead
> of the serial console.
>
> During the startup the kernel initializes the framebuffer correctly, and
> says:
>
> "Console: switching to frame buffer device"
>
> but nothing happens on it and the output is given only to serial console.
>
> What should i do to make it work correctly, now?

try adding the boot argument "console=tty0", this should make the main
console
the framebuffer.. if you want to output some text just to test it, try:

echo "this is a test" > /dev/tty1

then you can change to this virtual terminal with the command:

chvt 1

(you should already be default on terminal 1)...  if you are wanting the
framebuffer to be the main console, you may have to set up a dummy
console,
check the pmac_setup.c file for details on setting this up.. (ie.
conswitchp =
&dummycon)..

hope this can help,

ben

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