public inbox for u-boot@lists.denx.de
 help / color / mirror / Atom feed
From: Stefan Roese <sr@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] Current U-Boot doesn't boot device tree enabled kernel anymore
Date: Fri, 28 Mar 2008 11:55:37 +0100	[thread overview]
Message-ID: <200803281155.37292.sr@denx.de> (raw)
In-Reply-To: <47EBEDE4.4050302@semihalf.com>

On Thursday 27 March 2008, Bartlomiej Sieka wrote:
> It's because we assume that if the image got overwritten, its contents
> can't be trusted anymore, and abort booting. "Old" U-Boot didn't care
> about overwrites, which sometimes worked out OK, and sometimes didn't,
> the latter case resulting in nasty failure modes.

Ah, ok. So I really need to change all default environment variables on the 
board I maintain. Time to implement a common file for this.

> The overwrite issue is particularly acute in case of the new image
> format. Image is based on FDT and is being accessed via libfdt
> functions, so if it gets overwritten, there's little point in processing
> it further. But even with images in old format, this issue has been
> brought up on this list, and there's been proposals to add safeguards.
> So since overwrite checking was rather necessary for the new format, and
> desired for the old one, it got added.

Understood. Thanks.

Best regards,
Stefan

=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================

      reply	other threads:[~2008-03-28 10:55 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-27 14:09 [U-Boot-Users] Current U-Boot doesn't boot device tree enabled kernel anymore Stefan Roese
2008-03-27 14:15 ` Bartlomiej Sieka
2008-03-27 14:25   ` Stefan Roese
2008-03-27 15:36     ` Markus Klotzbücher
2008-03-27 15:45       ` Stefan Roese
2008-03-27 16:25       ` Wolfgang Denk
2008-04-01  8:00         ` Bartlomiej Sieka
2008-03-27 18:56     ` Bartlomiej Sieka
2008-03-28 10:55       ` Stefan Roese [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=200803281155.37292.sr@denx.de \
    --to=sr@denx.de \
    --cc=u-boot@lists.denx.de \
    /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