From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Lange <thomas@corelatus.com>
Date: Tue, 02 Dec 2003 23:44:29 +0100
Subject: [U-Boot-Users] Field upgrade
In-Reply-To: <20031202220143.15ACFC5F5F@atlas.denx.de>
References: <20031202220143.15ACFC5F5F@atlas.denx.de>
Message-ID: <3FCD15CD.4010209@corelatus.com>
List-Id: <u-boot.lists.denx.de>
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To: u-boot@lists.denx.de

We dont upgrade miniboot. It is so simple, we never
have to upgrade it. It does not touch any cpu registers,
memory configuration and such stuff.

It only scans the flash for an image with correct crc
and starts it.

During the past two years, we have upgraded ppcboot/u-boot
on live systems several times to add functionality, correct bugs
etc.

But miniboot is the same.

All advanced stuff is done by u-boot. Shipping a system to a customer
without a possibility to upgrade u-boot without risking a dead card
is not an option IMHO.

/Thomas


Wolfgang Denk wrote:
> In message <3FCD0356.30502@corelatus.com> you wrote:
> 
>>Sure there is a sw solution! We have been using it for
>>2 years now. Check out board "gth".
>>
>>We use a pre loader called miniboot, which boots the first
>>image with correct crc it finds in flash.
> 
> 
> You are just shifting the  problem  to  a  diferent  level,  actually
> adding MORE complexity.
> 
> Just one question: How do you reliably field upgrade  the  "miniboot"
> image running on your board?
> 
> Best regards,
> 
> Wolfgang Denk
>