Hello Wolfgang, On Thu, May 29, 2008 at 12:41 AM, Wolfgang Denk <[EMAIL PROTECTED]> wrote: > in message <[EMAIL PROTECTED]> you wrote: >> >> For how long can I expect current u-boot (say 1.3.4) to be forward >> compatible with newer Linux kernels? > > I think chances are pretty good. Please keep in mind that we're right > > But even today you can build a current Linux kernel using the cuImage > wrapper and boot it on an old (say, version 1.2.0) U-Boot. > Thanks for your clear answer, takes away my cloud of doubt.
>> Also, is there any plan to add fail-safe features to u-boot? > > What are you thinking of? > My main requirement is to have the bootloader make a decision to boot a fall back image in case the normal image does not boot (for whatever reason). The fall back image is a user friendly way to unbrick the device. It itself is never overwritten. (In my case a web server with firmware upgrade Java applet, for example). Currently, my flow is as follows (with implementation in redboot) boot loader: enable hardware watchdog if flag A is set clear flag A load normal image, boot else if the normal image was not loaded, boot fallback. else boot fallback the normal image sets flag A when it wants to reboot, then stops servicing the watchdog and resets if normal image either did not set flag A (it crashes) or it did not service the watchdog, the watchdog will reset the board. I wonder if this is a common use and if it makes sense to implement this for mainstream u-boot, or is this very specific? Regards, -- Leon ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ U-Boot-Users mailing list U-Boot-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/u-boot-users
