[U-Boot] Prevent dropping into a shell triggered by serial port

Wolfgang Denk wd at denx.de
Thu Oct 21 06:39:53 CEST 2010


Dear sunimohan,

In message <30015548.post at 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

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
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Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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