public inbox for u-boot@lists.denx.de
 help / color / mirror / Atom feed
From: Martin Egholm Nielsen <martin@egholm-nielsen.dk>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] Using u-boot as application-firmware upgrader / Performing logical operations?
Date: Wed, 22 Dec 2004 10:23:11 +0100	[thread overview]
Message-ID: <cqbedv$el6$1@sea.gmane.org> (raw)

Hi there,

I have plans of using u-boot as the last-and-ever-working 
application-firmware-upgrade (in case my Linux [from NAND] is somehow 
damged).
Hence my plans are that U-boot should perform the following on startup:

1) Try fetching new application-image using tftp against some hardcoded 
address
2) Timeout after 2 secs if no connection (skip to pt 5) (logigs needed)
3) Perform some simple validation of the image - e.g. check that the 
last bytes of the image is "egholm" (logics needed)
4) If validated, nuke the flash and put the new image on
5) Launch Linux kernel from nor with root-fs in nand

I reckon there is a problem with 2) where the remainder of the script 
should only run in case the tftp-action went well. And the same goes for 3).

Does this idea have a future?
Please let me hear your comments...

BR,
  Martin Egholm

             reply	other threads:[~2004-12-22  9:23 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-12-22  9:23 Martin Egholm Nielsen [this message]
2004-12-22 10:57 ` [U-Boot-Users] Using u-boot as application-firmware upgrader / Performing logical operations? Wolfgang Denk
2004-12-22 12:29   ` [U-Boot-Users] " Martin Egholm Nielsen
2004-12-22 14:17     ` Wolfgang Denk
2004-12-22 15:57       ` Martin Egholm Nielsen
2004-12-22 16:23         ` Wolfgang Denk
2004-12-23  9:14           ` Martin Egholm Nielsen
2004-12-22 14:44     ` Wolfgang Denk
2004-12-22 15:17       ` Martin Egholm Nielsen

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='cqbedv$el6$1@sea.gmane.org' \
    --to=martin@egholm-nielsen.dk \
    --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