arm64: secmon: add entry point for turned on CPUs

Newly turned on CPUs need a place to go bring its EL3
state inline with expectations. Plumb this path in for
CPUs turning on as well as waking up from a power down
state. Some of the infrastructure declarations were
moved around for easier consumption in ramstage and
secmon. Lastly, a psci_soc_init() is added to
inform the SoC of the CPU's entry point as well do
any initialization.

TEST=Built and booted. On entry point not actually utilized.

Change-Id: I2af424c2906df159f78ed5e0a26a6bc0ba2ba24f
Signed-off-by: Patrick Georgi <>
Original-Commit-Id: dbefec678a111e8b42acf2ae162c1ccdd7f9fd40
Original-Change-Id: I7b8c8c828ffb73752ca3ac1117cd895a5aa275d8
Original-Signed-off-by: Aaron Durbin <>
Original-Reviewed-by: Furquan Shaikh <>
Reviewed-by: Stefan Reinauer <>
Tested-by: build bot (Jenkins)
8 files changed