[Buildroot] /dev/ttyprinkt usage in BR
Yegor Yefremov
yegor_sub1 at visionsystems.de
Wed Jan 12 16:52:34 UTC 2011
> Yegor> As of kernel 2.6.37 there is a new pseudo tty device
> Yegor> /dev/ttyprinkt, that can make user output through pritnk()
> Yegor> routine. How can it be used in BR? What entries should
> Yegor> /etc/inittab contain to redirect the console output to
> Yegor> /dev/ttyprinkt?
>
> I haven't used it yet, but I guess the only thing you have to do to get
> all console output though it is to use devtmpfs (or add the device node
> in device_table.txt), and tell init to use it as console. Looking at the
> busybox init code, I see it gets the console device from the CONSOLE or
> console environment variables, so you would just have to add
> CONSOLE=/dev/ttyprintk to the kernel commandline.
Device creation is not a problem. If I change the console in /etc/inittab from ttyAM0 to ttyprintk I get
[U]
[U]
[U] Welcome to Buildroot
[U]
but no prompt.
Best regards,
Yegor
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