how to map the console to framebuffer on boot?

[Paolo S. <ar...@ti...>]

hi there,
i'm a newbie here, and i have lots of unanswered questions that i'd like to
make...

i'm working on an embedded PowerPC processor with a hardhat linux kernel
(2.2.14). This linuxbox only has a serial_console because it has no
keyboard.

now, i wrote a framebuffer device that seems to work, but i dont know how to
activate on it a console on the startup. This is what happens on the kernel
startup (i also use the serial console):

'fb_init' initializes my fb driver, opens 63 VC and calls
'take_over_console', but it does nothing because 'vc_cons[i].d' is NULL.
Then, it displays 'Console: switching to frame buffer device', but it is not
true!

Then, i tried some experiments, and i got:

echo "pippo" > /dev/tty  ==> /dev/tty: Device not configured (in
/proc/tty/drivers i found "5 0 system:/dev/tty")

echo "pippo" > /dev/tty0  ==> /dev/tty0: No such device (in
/proc/tty/drivers i found "4 0 system:vtmaster")

Now, what i wrong?
Is that recold field value right, or someone should set it before the
fb_init?
How a fb can become a console when booting?

it's not clear to me... i looked everywhere but that code it's very...
confusing!

Thanx again...

Best regards,
Paolo Scaffardi (ar...@ti... - psc...@su...)
AIRVENT SAM s.p.a. - RIMINI (ITALY)
Tel. 0541 383294 - Fax 0541 387086