uboot messages to ttyO0

[Richard-tx]

I am using ttyO0 as a serial console for another linux machine.  When the BBB boots, it sends out messages out ttyO0 which is connected to another machines console.  Since a getty is running and the messages get echo'd back, uboot reacts to those messages which stops the boot process..

So the bottom line is this:

How do I get uboot to NOT send out boot messages to ttyO0?

Here is a sample of the messages sent to ttyO0

U-Boot 2013.10-00016-g6adb529 (Feb 06 2014 - 14:54:24)^M
^M
I2C:   ready^M
DRAM:  512 MiB^M
WARNING: Caches not enabled^M
NAND:  0 MiB^M
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1^M
*** Warning - readenv() failed, using default environment^M
^M
Net:   <ethaddr> not set. Validating first E-fuse MAC^M
cpsw, usb_ether^M
Hit any key to stop autoboot:  1 ^H^H^H 0 ^M
gpio: pin 53 (gpio 53) value is 1^M
Card did not respond to voltage select!^M

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[Richard-tx]

The OS is Wheezy.

[jmelson]

On Friday, May 2, 2014 9:40:31 PM UTC-5, Richard-tx wrote:

I am using ttyO0 as a serial console for another linux machine.  When the BBB boots, it sends out messages out ttyO0 which is connected to another machines console.  Since a getty is running and the messages get echo'd back, uboot reacts to those messages which stops the boot process..

So the bottom line is this:

How do I get uboot to NOT send out boot messages to ttyO0?

I doubt you can do that.  Why not turn off echoing at the other machine's console by running a terminal emulator that captures that
port?

Jon

[Robert Nelson]

Lots of options, redirect u-boot to a different serial port:

http://git.denx.de/?p=u-boot.git;a=blob;f=board/ti/am335x/board.c;hb=HEAD#l399

enable u-boot silent mode

etc/etc.

Regards,

--
Robert Nelson
http://www.rcn-ee.com/