Mike, I tested several times last week but it didn't work for me. I had made the changes in U-boot as you say, but it keeped reseting at the time. In fact, in the log_buf I can see several printk's after setup_arch (where ppc_md.heartbeat) is assigned, but the watchdog counter is not reloaded.
Which could be the difference? I am using ramdisk, and a MPC8248 clocked at 100MHz, but I don't think this will be the reason. Now, someone has proposed me to try reloading WDT in printk calls. I will test. Best regards, Alex > Bastos Fernandez Alexandre wrote: > > > > >So, any other idea? Is the WDT on MPC8248 usable at all? > > > > > I used the watchdog timer on mpc8247 and mpc8271. The mpc8248 watchdog > should be the same. I used ppc_md.heartbeat to write to the watchdog > registers and it worked fine. Also, I've added WATCHDOG_RESET() to > common/cmd_bootm.c in U-Boot just before the jump to kernel. > > >Thanks, > > > >Alex > >_______________________________________________ > >Linuxppc-embedded mailing list > >Linuxppc-embedded at ozlabs.org > >https://ozlabs.org/mailman/listinfo/linuxppc-embedded > > > > > > > > > > > > > -- > Sincerely yours, > Mike Rapoport > ----------------------------------------------------------------- > CompuLab Ltd. > Web: http://www.compulab.co.il