[U-Boot-Users] Field upgrade

Thomas Lange
2003-12-02T22:44:29Z

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
>