In message 3634de74050530024766f11de0@mail.gmail.com you wrote:
as soon linux loads itself. the serial port should be free. what should i do it to achieve this.
This is a Linux issue only. Thjis question is thus off topic on this maling list.
i set in bootargs console=none.
This is one of the options you have.
But, linux does not boot up at all. (boot process is not complete).
How do you know that? Where is the Linux kernel hanging then? You did attach a debugger and check, didn't you? If not - why not?
When i ping to my target. i get destination unreachable. what could be the problem.
Probably your network interface is not up or not configured correctly?
You don't provide any information, so we cannot help. Important information you should tell us:
* Does the same kernel boot fine when you omit the "console=none" part of your boot arguments? Which boit arguments do you passin this situation? * What are your exact boot arguments when using "console=none" ? * What did you find out when you used a debugger to find out what Linux is doing or where it is hanging? * Did you try a post-mortem dump of the log_buf area? What was the result? * Did you try configuring LInux to use netconsole so you can see what's going on?
etc. etc.
But, as mentioned before, all this is off topic here and should be discussed on a Linux mailing list instead.
Best regards,
Wolfgang Denk