In message <3EE8E5EA at mailandnews.com> you wrote: > > We use small part of our flash to hold config data (last sector of the flash) > and which image must be started. PPCBoot read this and start the right image. > when upgrading , we change the kernel option to the failsafe kernel, do the > update of the second kernel (the working one) and after that we change the > kernel option again and we try to start the new one. We use also a kind of > watchdog feature in case of system lockout.
It may be worth to point out that U-Boot supports redundand flash sectors for exactly such purposes, so you will always have a working backup copy in case the update of your config data (=environment variables) sector fails because of powerdown etc. Best regards, Wolfgang Denk -- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de God made the integers; all else is the work of Man. - Kronecker ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
