[U-Boot] Prevent dropping into a shell triggered by serial port
Hi
I have connected my mini2440 to a Com device using serial port.
when I try to boot, uboot always drops into the shell. If I remove the serial port connector, it boots happily.
Looks like the Com device is responding to the boot messages from uboot and uboot is dropping into the shell.
1) Can I prevent messages from uboot into serial port
2) Can I continue to boot even if I drop into a shell (like automatically typing "boot" in the shell) with a script like .bashrc equivalent
3) can I totally shutoff the serial port for uboot only
Thanks Sunitha
On Wed, Oct 20, 2010 at 21:28, sunimohan sunimohan@gmail.com wrote:
Hi
I have connected my mini2440 to a Com device using serial port.
when I try to boot, uboot always drops into the shell. If I remove the serial port connector, it boots happily.
Looks like the Com device is responding to the boot messages from uboot and uboot is dropping into the shell.
Can I prevent messages from uboot into serial port
Can I continue to boot even if I drop into a shell (like automatically
typing "boot" in the shell) with a script like .bashrc equivalent
- can I totally shutoff the serial port for uboot only
RTFM
see the main README, doc/README.silent, doc/README.modem, doc/README.autoboot in u-boot. There are lots of ways to handle this.
Dear sunimohan,
In message 30015548.post@talk.nabble.com you wrote:
when I try to boot, uboot always drops into the shell. If I remove the serial port connector, it boots happily.
If this happens even if you don't transmit data over the serial line tht you should fix your hardware. Seems you have floating signals, so add appropriate pull-up or pull-down resistors.
Looks like the Com device is responding to the boot messages from uboot and uboot is dropping into the shell.
Sounds like a hardware-related issue to me.
Best regards,
Wolfgang Denk
participants (3)
-
Andrew Dyer -
sunimohan -
Wolfgang Denk