[U-Boot-Users] Re: Keeping Console on Serial after LCD Enabled
wd at denx.de
Wed Jul 28 10:45:22 CEST 2004
In message <31ADFA827355984B9E2A161514595B561C3313 at lpdsrv04.logicpd.com> you wrote:
> 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
... and should get redirected to LCD.
> 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.
You should see it on the LCD now.
> I tried commenting out
> #ifdef CFG_DEVICE_NULLDEV
Don't do this.
> 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.
The normal mode of operation is that when there is a LCD then the
console output goes to the LCD by default. You can always change this
by assigning a different device to the stdout / stderr descriptors.
Either interactively by entering (probably blind) a "setend stdout
serial" command, or you can put this command in your CONFIG_PREBOOT
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
I haven't lost my mind -- it's backed up on tape somewhere.
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