On 26-03-19 11:02, jairo wrote: > El mar, 26-03-2019 a las 09:14 +0100, Patrick Boettcher escribió: >> On Tue, 26 Mar 2019 09:05:47 +0100 >> jairo <ja...@futurasmus-knxlab.es> wrote: ... > Yes, I know, it is somewhat risky, but I have only 512MB of nand > memory, and we are getting a lot of software. I think we have to > evaluate the move to a hardware with more memory, at the moment is what > we have. I think it is practically impossible to put 2 systems in so > little memory.
With NAND you'll probably have a filesystem (jffs2 or UBI) in place. With that, you could just use a package manager like opkg to update sofware. If the box has a network connection, just running "opkg update && opkg upgrade" will install the current releases with the minimum effort. We've been using this on a million boxes and it works fine (until someone decides to patch libc and you get a 300+ package upgrade). Linux is also capable of upgrading a running system. Basically, copy some executables to a tmp filesystem, remount everything read-only, and change root to the tmp part. Then you can rewrite partitions and reboot. In any case, you should have a u-boot configuration that allows it to be debricked. Typically a USB stick or DFU will do nicely if your board has USB. Or even serial... -- _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto
