User`s manual

High Performance Low Cost Embedded Systems
3.1.30 System Shutdown
In the “Setting” subgroup, click on the “shutdown” icon you will see four options on the
shutdown window.
Shutdown: Press this button, Linux will end all the programs and services to shutdown the whole
system. After the whole system is shutdown, the CPU will not be running and the system consumes
lest power. However since our system doesn’t have a hardware power down circuit you still can see
the power LED on the board is on.
Reboot: This is a “hot” reboot button. If your system boots from the Nor Flash, after you press
this button, the system will shutdown, reboot and enter the supervivi main menu. If your system
boots from the Nand Flash, after you press this button, the system will shutdown, reboot and enter
the Qtopia interface.
Note: Reboot is different from the “Watchdog” function we will introduce. The “Watchdog” is
“cold” reboot and doesn’t end programs or services but reset the system instead.
Restart Server: it restarts the Qtopia system only. It doesn’t interrupt the running Linux.
Terminates Server: it shuts down the Qtopia system. After press this button, the Qtopia interface
will be disabled. What is left on the screen is the left data in RAM and it is not an active graphic
interface.
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