Thread (2 messages) flat view 2 messages, 2 authors, 2002-07-09

Re: Serial console ports on systems with no console connected.

From: Wolfgang Denk <hidden>
Date: 2002-07-09 05:14:05

In message [ref] you wrote:
This question is common to both ppcboot and ppc-linux.
The ppcboot I am using is 1.1.5 and Linux kernel 2.4.18.

If there is no console connected to the serial console port,
is it true that a thread sending output to it hangs? If this is
No, this is NOT true.

Why should it? There is no flow control used - neither in the PPCBoot
nor in the Linux UART drivers...
I have a MPC8260ADS based board, and see the above
...at least not in the standard MPC8xx and MPC8260 UART drivers.
behavior under ppcboot. Under Linux using a BDI debugger
the thread sending output to the console hangs. Perhaps
You must be doing something wrong.

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
If you believe that feeling bad or worrying long enough will change a
past or future event, then you are residing on another planet with  a
different reality system.

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
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