The reason for the most recent CPU reset. The strings vary depending on the hardware platform. For EG4xxx model devices, the possible values are:
general reset: CPU was powered on when the backup battery
wakeup: CPU was powered on when backup battery still had
sufficient charge left.
watchdog reset: The CPU's watchdog timer triggered the reset.
software reset: Firmware requested a reboot.
user reset: Not applicable.
unknown reset: Not applicable.