[U-Boot-Users] Keeping Console on Serial after LCD Enabled

[Michael Bendzick]

With Himba's help, I got things running much better for my OMAP 1510
Innovator LCD driver U-Boot, but once the LCD comes up (drv_lcd_init
finishes), the serial console output is switched off.  I can still issue
commands from my serial console, and have them take effect (like changing a
status LCD or turning off the LCD backlight with mm.b), but can't see any
more text output.

I tried commenting out 

#ifdef CFG_DEVICE_NULLDEV
	memset (&dev, 0, sizeof (dev));

	strcpy (dev.name, "nulldev");
	dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
	dev.putc = nulldev_putc;
	dev.puts = nulldev_puts;
	dev.getc = nulldev_input;
	dev.tstc = nulldev_input;

	device_register (&dev);
#endif

in common/devices.c, as when CONFIG_SPLASH_SCREEN is defined,
CFG_DEVICE_NULLDEV gets defined, and would appear to reroute console output
once assigned with dev.putc = serial_putc would now be dev.putc =
nulldev_putc.  However, this did not change the situation for me at all.

Any ideas on how to maintain the serial terminal?  Take note that my driver
is very very similar to cpu/mpc8xx/lcd.c, so I do not expect that coding
that I did is disabling the serial terminal, but instead some other
interaction in the code is doing this.

Thanks,

-Michael Bendzick
Systems and Software Engineering
Logic Product Development
michael.b at logicpd.com
612-436-5122
www.logicpd.com