From: James Thomas <james.thomas-4yDnlxn2s6sWdaTGBSpHTA@public.gmane.org>
To: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [flasher PATCH] Set bootdelay to 0
Date: Thu, 04 Dec 2014 11:50:41 +0000 [thread overview]
Message-ID: <54804A91.9080102@codethink.co.uk> (raw)
In-Reply-To: <547CADF7.8030506-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
On 01/12/14 18:05, Stephen Warren wrote:
> On 11/26/2014 10:57 AM, James Thomas wrote:
>> On 32-bit systems fdtput writes 0xfffffffe as 0x7fffffff, which takes
>> some time to complete.
>>
>> Setting this to 0 accomplishes the same goal
>
> A value of 0 doesn't mean the same thing. 0 means that bootdelay is enabled,
> just with an immediate timeout, whereas -2 means that bootdelay is disabled
> completely, so that boot can't be interrupted. The difference is that when
> bootdelay is 0, the user can still press a key before the boot delay check, and
> break into the boot process. This would make the flasher less reliable.
Ah, right, that makes sense, thanks for the feedback
>
> Can you explain why the correct value doesn't get into the DTB? It seems better
> to fix that bug in fdtput instead. Or perhaps there's a bug in the command-line
> arguments to fdtput that should be fixed?
Command-line argument should have been the first thing I checked, I think we
need to use -t x (hex) here instead of int. Now works correctly on 32-bit and
64-bit (i'll resubmit)
Thanks
James
prev parent reply other threads:[~2014-12-04 11:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-26 17:57 [flasher PATCH] Set a boot delay of 0 instead of -2 James Thomas
[not found] ` <1417024626-6616-1-git-send-email-james.thomas-4yDnlxn2s6sWdaTGBSpHTA@public.gmane.org>
2014-11-26 17:57 ` [flasher PATCH] Set bootdelay to 0 James Thomas
[not found] ` <1417024626-6616-2-git-send-email-james.thomas-4yDnlxn2s6sWdaTGBSpHTA@public.gmane.org>
2014-12-01 18:05 ` Stephen Warren
[not found] ` <547CADF7.8030506-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2014-12-04 11:50 ` James Thomas [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=54804A91.9080102@codethink.co.uk \
--to=james.thomas-4ydnlxn2s6swdatgbsphta@public.gmane.org \
--cc=linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.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 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.