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arm64: secmon: wait for all CPUs to enter secmon 

There is state within the system that relies on having
all CPUs present in order to proceed with initialization.
The current expectation is that all CPUs are online and
entering the secure monitor. Therefore, wait until all
CONFIG_MAX_CPUs show up.

BUG=chrome-os-partner:32112
BRANCH=None
TEST=Can get all CPUs up in kernel using PSCI.

Change-Id: I741a09128e99e0cb0c9f4046b1c0d27582fda963
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 030535b7c9821b40bf4a51f88e289eab8af9aa13
Original-Change-Id: Ia0f744c93766efc694b522ab0af9aedf7329ac43
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/227547
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/9394
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Aaron Durbin 2014-11-05 10:23:33 -06:00 committed by Patrick Georgi
parent 1707a164c9
commit f793d432b9
1 changed files with 21 additions and 0 deletions
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21
src/arch/arm64/armv8/secmon/secmon_init.c
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@ -53,6 +53,24 @@ static void cpu_init(int bsp)
cpu_set_bsp();
}
static void wait_for_all_cpus(void)
{
int all_online;
while (1) {
int i;
all_online = 1;
for (i = 0; i < CONFIG_MAX_CPUS; i++) {
if (!cpu_online(cpu_info_for_cpu(i)))
all_online = 0;
}
if (all_online)
break;
}
}
static void secmon_init(struct secmon_params *params, int bsp)
{
struct cpu_action action = {
@ -67,6 +85,9 @@ static void secmon_init(struct secmon_params *params, int bsp)
if (!cpu_is_bsp())
secmon_wait_for_action();
/* Wait for all CPUs to enter secmon. */
wait_for_all_cpus();
smc_init();
psci_init();