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AM3354: WDTimer behavior at boot time

Part Number: AM3354

1. the ROM code will configure Watchdog Timer 1 (set to three minutes)

Did it mean that the watchdog would kick the processor to restart the boot sequence after 3 minutes if the power on boot-up was failed? 

2. The watchdog can not be disabled by ROM code. What's the reason that the watchdog didn't kick the "reboot" sequence.

was it because entering the SPL (or MLO)  stage?