Dear Brendan,
In message 5665634E.8050004@etrix.com.au you wrote:
Note that the key problem with such a simplistic approach is that it will not help you in case an image looks OK, but hangs during boot - in that case, you need a watchdow and support for the bootcount feature.
...
Yes, the watchdog and bootcount feature is the advanced stuff I'm looking for. I would think this has been implemented numerous times, and I didn't want to reinvent the wheel if there was some commonly used infrastructure to support this.
Indeed both watchdog support and bootcounter are standard features that are in active use by a number of boards.
My use case is not that uncommon -- lots of embedded devices installed in remote locations that are not easily accessible, but require remote monitor and software updates.
Indeed - a pretty common requirement.
Is there anything that is "standard" in u-boot to support this? Or any work that is published that has attempted this?
It's all in mainline...
Best regards,
Wolfgang Denk