From: Magnus Damm <damm@opensource.se>
To: Josh Huber <huber@alum.wpi.edu>
Cc: Grant Erickson <erick205@umn.edu>, linuxppc-embedded@lists.linuxppc.org
Subject: Re: Solutions for Fast Software Upgrade in Linux/PPC
Date: Thu, 27 Sep 2001 00:53:01 +0200 [thread overview]
Message-ID: <3BB25C4D.7708F14C@opensource.se> (raw)
In-Reply-To: 87n13idk7e.fsf@mclinux.com
I recommend a combination of a simple bootloader and
a reboot-linux-in-linux piece of software.
You can find miniboot - a safe and simple bootloader
at http://opensource.se/projects/
With a clever-designed upgrade application it's possible
to update the flash in a fail-safe way.
One neat feature is that miniboot runs without any external RAM,
which makes it possible to keep the RAM-code in a upgradeable
image.
I also have a driver, relf, (Reboot ELF) that makes it
possible to reboot an ELF directly from Linux.
It has booted Linux, vxWorks and pSOS. mpc8xx only.
If you're intrested - give me a mail and I will send it to you.
Good luck /
Magnus
Josh Huber wrote:
>
> Grant Erickson <erick205@umn.edu> writes:
>
> [snip]
>
> I'd also recommend the fast-reboot option, but since no one mentioned
> yet I'll suggest Werner Almsberger's bootimg utility.
>
> Take a look at:
> <URL:ftp://icaftp.epfl.ch/pub/people/almesber/misc/>
>
> specifically, bootimg-current.tar.gz
>
> Also, in ../booting/ there is a paper describing the
> method. (bootinglinux-current.ps.gz)
>
> I've tested this many times (we use it at Mission Critical for our
> kernel crash dump system), and if you're looking for fast reboots this
> is the way to go.
>
> Unfortunately, it doesn't solve the upgrading of the ROM issue.
>
> For the lazy who don't want to look at the references, what this
> allows you to do is boot a linux kernel, using an already loaded Linux
> kernel.
>
> ttyl,
> --
> Josh Huber
>
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2001-09-26 22:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-09-25 15:38 Solutions for Fast Software Upgrade in Linux/PPC Grant Erickson
2001-09-25 15:42 ` Mark Hatle
2001-09-25 15:48 ` Jim Thompson
2001-09-25 16:22 ` Peter Desnoyers
2001-09-26 15:51 ` Josh Huber
2001-09-26 22:53 ` Magnus Damm [this message]
2001-09-26 15:52 ` Josh Huber
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