From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
To: buildroot@busybox.net
Subject: [Buildroot] can't create /dev/ttys0 on cirrus ARM EP93XX
Date: Sat, 7 Aug 2010 18:55:16 +0200 [thread overview]
Message-ID: <20100807185516.21da8fc0@surf> (raw)
In-Reply-To: <AANLkTikvxE-my1WWLsNAYZnXRY6RiP-NtyxpgsNoCyN6@mail.gmail.com>
Hello Anthony,
On Sat, 7 Aug 2010 17:10:42 +0100
anthony henderson <development@fair-games.com> wrote:
> So I've ran buildroot for the ARM 920T. All seems fine. As the board has
> no keyboard ect development is done via serial port. This is set in the old
> rootfs from etc/initab via
> ttyAM0::askfirst:-/bin/sh
Correct.
> I tried to start the new rootfs, but it appears to want to start from video
> command prompt. So I copied the inittab from the old working system to the
> new rootfs, this gave an error finding ttyAM0.
Just modify Buildroot /etc/inittab instead.
> On searching the new rootfs I can see dev doesn't have this node.
Yes, it must be created. So, add the following line to
target/generic/device_table.txt:
/dev/ttyAM c 666 0 0 204 16 0 1 4
It will make that /dev/ttyAM0, /dev/ttyAM1, /dev/ttyAM2 and /dev/ttyAM3
are created when building the root filesystem.
If you want to automate the adaptation of the /etc/inittab, just add an
entry in target/generic/Config.in.
Regards,
Thomas
--
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
prev parent reply other threads:[~2010-08-07 16:55 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-07 16:10 [Buildroot] can't create /dev/ttys0 on cirrus ARM EP93XX anthony henderson
2010-08-07 16:55 ` Thomas Petazzoni [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100807185516.21da8fc0@surf \
--to=thomas.petazzoni@free-electrons.com \
--cc=buildroot@busybox.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.