On Tuesday 13 October 2009, Øyvind Harboe wrote: > Reading documentation on arm11 about reset types doesn't make > me any less confused. It seems like "power on reset" is not accessible > via srst, trst or the debug registers and that the "power on reset" > can reset stuff that can't be reset otherwise.
Yes; same is true on other ARMs too. The integrator can expose a power-on-reset signal ... but usually doesn't, I think there's explicit guidance not to do that any more. Consider all the stuff that's *specific* to a power-up: gotta watch for voltage levels being OK, supply sequencing, whatever oscillator is used during boot must stabilize, ... all kinds of stuff that applys only to powerup, and shouldn't be repeated. Whereas on any flavor of warm reset, you may want to explicitly avoid re-initializing debug state. Otherwise you can't very easily debug the reset sequence... _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
