[U-Boot-Users] Serial terminal & u-Boot
Anders Larsen
alarsen at rea.de
Wed Jul 23 09:36:20 CEST 2003
"Brian S. Park" <brian at corelis.com> schreibt:
>Hi all,
>I'm using u-Boot 0.4.0 with our custom board based on IBM walnut.
>I noticed that if I do not have the HyperTerminal running, the boot
>process
>never proceeds.
>
>If I power up the target with out HyperTerminal running, it never comes
>up.
>As soon as start HyperTerminal, I see print out for Kernel download and
>the
>board boots up. It looks as though it was waiting for the serial
>communication before it starts downloading the kernel over the ethernet.
>
>Is this normal behavior? Is there a way to make it boot up regardless of
>whether a serial terminal is connected or not?
Hi,
did you by any chance enable CONFIG_SERIAL_SOFTWARE_FIFO ?
In that case the driver uses CTS/RTS handshake, which would explain your
problem.
HTH
Cheers
Anders
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