Power and tamper response

The following table indicates which actions take place depending on power supplies and working modes:

Battery backup	Working mode	After a tamper event...
	-	-
	power off	Register the event in NVRAM Activate the output
indifferent	power off	Register the event Activate the output Power on the system and U-Boot catches the tamper event
indifferent	suspend	Register the event Activate the output Wake up the system with an IRQ that can be processed by user space
indifferent	running	Register the event Activate the output Trigger the tamper IRQ that can be processed by user space