arm64: add psci support to secmon

The PSCI functionality initially includes CPU_ON and CPU_OFF
functions. Upon entering secmon if the parameters are non-NULL
then a PSCI CPU_ON action is done for the current CPU.

TEST=Booted kernel with PSCI support. Brought up all CPUs in kernel
     using PSCI. Turned CPUs on and off.

Change-Id: I256fa45a1c9889ff9d7990eb1898df1ec241c117
Signed-off-by: Patrick Georgi <>
Original-Commit-Id: 689ba03e313e7e52e9b74aa774897b55cbd52748
Original-Change-Id: I943826b7dbcc8e3f6c8c4b66344af8fac12ba94e
Original-Signed-off-by: Aaron Durbin <>
Original-Reviewed-by: Furquan Shaikh <>
Reviewed-by: Patrick Georgi <>
Tested-by: build bot (Jenkins)
4 files changed