On Tue, Aug 02, 2016 at 03:37:44PM +0200, Antonello Dettori wrote: > Hi everyone. > > I'm currently working on coreboot but I stumbled on a strange SeaBIOS > behaviour. > After executing a payload and returning control to the caller SeaBIOS > crashes. > > The problem is currently solved by rebooting before the payload returns but > doing so also makes chaining multiple payloads impossible so I'm trying to > look into a solution.
The SeaBIOS payload support was not designed to robustly handle returns from a payload. It will crash if the payload alters the GDT, overwrite the stack, or otherwise messes up the SeaBIOS state. As far as I know, payloads in general aren't designed to handle returns to their caller. > I tried to increment the debug level to 8 to get more information and the > attached log is what I got. That log isn't from SeaBIOS. It's unclear what hardware you have. In general, a serial port is the most robust way of obtaining a log. See also: http://www.seabios.org/Debugging -Kevin _______________________________________________ SeaBIOS mailing list [email protected] https://www.coreboot.org/mailman/listinfo/seabios
