Reboot on ArmV8

[Shashank Anand]

Hi Genodians,

On x86, the acipica component enables shutdown and reboot of the device. 
I was however unable to find any related component in the genode repo 
for power management on ArmV8

The PSCI functions are a convenient way for power management in ArmV8. 
The base-hw kernel already provides a PSCI implementation of cpu_on and 
cpu_off and it is trivial to implement the other PSCI functions as well. 
I am particularly interested in system reset.

I would like to perform a system reset from a user space component, 
however PSCI requires kernel privileges. Would it be possible to expose 
the PSCI system reset service to a specific component? How feasible is 
this modification with respect to the structure of base-hw?

Regards,

Shashank
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