I'm trying to reboot the mpc8544 and pass the reason of the reboot (two bits would be enough). I've been told the a PowerPC cpu has usually a few registers which will survive a soft reset. The "normal" reboot is done via the HRESET_REQ line which is handeled by externel HW and does a power cycle. The e500 watchdog also uses the HRESET_REQ line. Other way would be use the Debug Control Register 0 (DBCR0) and set the reset bit. The manual says here that it does a hard reset so none of my registers will survive, right? There is a Most recent reset (MRR) bit in the Debug Status Register (DBSR) but that one should be always set since the last reset was a hard reset. Right now I'm thinking about stealing a page and put the information there since the memory controller isn't re-initialized. Does someone have a better idea?
Sebastian _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
