Hi u-boot users,
I'm currently experimenting with u-boot and watchdog support.
I'd like to have the possibility to configure u-boot for watchdog support but disable the watchdog if there's no autoboot and I want to use the booter. I looked at the code but I found no such feature at the moment, am I right?
If the watchdog is needed, it should be enabled very early. But at this point the environment is eventually not yet available. A possible way would be to enable the watchdog early in the boot stage and disable it short before the main loop if an environment variable was set (e.g. setenv watchdog off).
Another possibility would be a command to disable the watchdog instead of an environment variable.
All solutions assume that an enabled watchdog could be disabled again which is not true for all watchdog implementations. I plan to use it on the Motorola MCF5272, there it is no problem.
What is your opinion and experience to this topic?
Regards,
Josef