In message [off-list ref] you wrote:
This seems ok to me but I don't have any video signal. My screen remains
blank.
What's your boot arguments? Where is your console device, on the
serial port or on the frame buffer?
xf86OpenConsole: Cannot open /dev/tty0 (No such file or directory)
...
Did you enable all of the following options in your kernel config?
CONFIG_FB=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_FB_MB86290=y
CONFIG_FBCON_ADVANCED=y
CONFIG_FBCON_CFB16=y
CONFIG_FBCON_FONTS=y
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
My guess is that CONFIG_VT and/or CONFIG_VT_CONSOLE might be missing.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
"There is no distinctly American criminal class except Congress."
- Mark Twain
In message [off-list ref] you
wrote:
quoted
This seems ok to me but I don't have any video signal. My screen remains
blank.
What's your boot arguments? Where is your console device, on the
serial port or on the frame buffer?
My boot arguments :
# more /proc/cmdline
console=tty0 console=ttyS1,9600 devfs=mount ip=bootp root=/dev/nfs rw
My console is on the serial port (ttyS1 on SMC2).
quoted
xf86OpenConsole: Cannot open /dev/tty0 (No such file or directory)
...
Did you enable all of the following options in your kernel config?
CONFIG_FB=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_FB_MB86290=y
CONFIG_FBCON_ADVANCED=y
CONFIG_FBCON_CFB16=y
CONFIG_FBCON_FONTS=y
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
My guess is that CONFIG_VT and/or CONFIG_VT_CONSOLE might be missing.
All those options are enabled.
quoted
In message [off-list ref] you
wrote:
quoted
This seems ok to me but I don't have any video signal. My screen
remains
blank.
What's your boot arguments? Where is your console device, on the
serial port or on the frame buffer?
My boot arguments :
# more /proc/cmdline
console=tty0 console=ttyS1,9600 devfs=mount ip=bootp root=/dev/nfs rw
My console is on the serial port (ttyS1 on SMC2).
quoted
quoted
xf86OpenConsole: Cannot open /dev/tty0 (No such file or directory)
...
Did you enable all of the following options in your kernel config?
CONFIG_FB=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_FB_MB86290=y
CONFIG_FBCON_ADVANCED=y
CONFIG_FBCON_CFB16=y
CONFIG_FBCON_FONTS=y
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
My guess is that CONFIG_VT and/or CONFIG_VT_CONSOLE might be missing.
All those options are enabled.
As I said earlier, when the driver loads, my monitor don't receive any
video signal. I can force it by calling at the end of the initialization
of the driver :
reg = MB86290FB_READ_DISP_REGISTER(GDC_DISP_REG_EXT_MODE);
MB86290FB_WRITE_DISP_REGISTER(GDC_DISP_REG_EXT_MODE, reg | 0x80010000);
This command enables the display, and "garbage" appears on the monitor.
Then if i do :
# cat /dev/urandom > /dev/fb0
I should see dummy pixels on the screen but in fact nothing happens. This
is still the same garbage on the screen.
I use a custom processor card based on a MPC8270. I can't figure out if
the problem comes from the configuration of my kernel (all the needed
options are enabled) or if it is in the code of the initialisation of my
platform.
This is the first time I try to use framebuffer graphics, so I'm new with
it. Can the framebuffer work from a serial console on a platform without
keyboard ?
Thanks for your help.