Antonio Di Bacco wrote: > Little bit off topic: > I decided to adopt a different strategy, the sw download web page will > contain > a java applet that will act as a tftp server, then the board will be rebooted > and an environment variable will instruct the u-boot to tftp the new software > from the applet. What do you think? I know that applets cannot read local > files on the PC, unless they have a valid certificate but the user should > trust me. > > Bye, > Antonio. >
If this approach hits a roadblock for some reason (user resistance, firewall issues with tftp etc.), think about the following... During the update you can use a small ram based file system (tempfs) holding everything you need, kill all unneeded processes, fill your ram based file system. Once this ram file system is filled you will pivot_root to it making it new root fs and proceed to update from it. Once update is down you can reboot. I have not done this so it is very likely there are some details that I cannot foresee at this very moment. Best regards, Tolunay