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.

BUG=chrome-os-partner:32112
BRANCH=None
TEST=Built and booted. On entry point not actually utilized.

Change-Id: I2af424c2906df159f78ed5e0a26a6bc0ba2ba24f
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: dbefec678a111e8b42acf2ae162c1ccdd7f9fd40
Original-Change-Id: I7b8c8c828ffb73752ca3ac1117cd895a5aa275d8
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/228296
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/9422
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)

1 files changed, 0 insertions, 2 deletions

diff --git a/src/arch/arm64/c_entry.c b/src/arch/arm64/c_entry.c
index 5e3dfe871d..de8ebcdf0f 100644
--- a/src/arch/arm64/c_entry.c
+++ b/src/arch/arm64/c_entry.c
@@ -70,8 +70,6 @@ static void secondary_cpu_start(void)
  */
 void (*c_entry[2])(void) = { &arm64_init, &secondary_cpu_start };
 
-extern void arm64_cpu_startup(void);
-
 void *prepare_secondary_cpu_startup(void)
 {
 	return secondary_entry_point(&arm64_cpu_startup);