From: David Jander <david.jander@protonic.nl>
To: linuxppc-embedded@ozlabs.org
Subject: Re: Linux 2.6-10.rc3 8xx - Only 3 characters are printed well in __ init start_kernel() upon kernel booting - why ?
Date: Mon, 17 Jan 2005 08:16:50 +0100 [thread overview]
Message-ID: <200501170816.50398.david.jander@protonic.nl> (raw)
In-Reply-To: <313680C9A886D511A06000204840E1CF0A6474EC@whq-msgusr-02.pit.comms.marconi.com>
On Sunday 16 January 2005 20:54, Povolotsky, Alexander wrote:
>[...]
> > to prove it I added printk("ALEX\n"); in __init start_kernel() prior to
> > printk(linux_banner);
> >
> > ...
> > lock_kernel();
> > page_address_init();
> > printk("ALEX\n");
> > printk(linux_banner);
> > setup_arch(&command_line);
> > setup_per_cpu_areas();
> > ...
> >
> > after gunzip
> > done.
> > Now booting the kernel
> > ALE=FF=FF=FF=FF=FF=FF=FF=FF=C0=FF=FF=FF=FF=FF=FF=FF=FF=C08=C0=FF=FF=FF=
=FF=FF=FF=FF=FF=C0X=C0=FF=FF=FF=FF=FF=FF=FF=FF=C0x=C0=FF=FF=FF=FF=FF=FF=FF=
=FF=C0~=C0=FF=FF=FF=FF=FF=FF=FF=FF=C0=B8=C0=FF=FF=FF=FF=FF=FF
> >=FF =FF=C0=D8=C0=FF=FF
> > <more garbage>
> > <hangs>
> >
> > Why would first 3 characters come out right ?
> > Any ideas ?
My fairly uneducated guess: The system hangs before the last character come=
s=20
out of the uart buffer. Try adding a delay just after printk.
The garbage could be anything produced by a piece of hardware gone wild.
Greetings,
=2D-=20
David Jander
Protonic Holland.
prev parent reply other threads:[~2005-01-17 7:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-16 19:54 Linux 2.6-10.rc3 8xx - Only 3 characters are printed well in __ init start_kernel() upon kernel booting - why ? Povolotsky, Alexander
2005-01-17 7:16 ` David Jander [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=200501170816.50398.david.jander@protonic.nl \
--to=david.jander@protonic.nl \
--cc=linuxppc-embedded@ozlabs.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).