Dear Mats, In message <1024408647.20191212164...@tele2.se> you wrote: > > I want to set up for an upgrade of our embedded system, using a > special kernel for the upgrade. The standard will be to load the > system from mtd3 (kernel), mtd4 (devicetree) and mtd5 (rootfs). > > When an update is to take place I want to run the upgrade system from > mtd0. > > So basically I need to have some sort of telling U-boot that it should > launch the upgrade system instead of the standard system. > > Any ideas how I set this up? > How to tell u-boot? > How to get u-boot to boot from another partition based on a condition > like that?
In addition to Harald's advice you might also want to consider not reinventing the wheel yet agaib, but instead look into [1] where all these issues have already been solved (and tested, with many projects and a zillion devices in the field). [1] https://sbabic.github.io/swupdate/ Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de Never underestimate the bandwidth of a station wagon full of tapes. -- Dr. Warren Jackson, Director, UTCS
