diff --git a/src/arch/arm64/armv8/secmon/secmon_init.c b/src/arch/arm64/armv8/secmon/secmon_init.c
index 9097a08b36..2ec2f136f7 100644
--- a/src/arch/arm64/armv8/secmon/secmon_init.c
+++ b/src/arch/arm64/armv8/secmon/secmon_init.c
@@ -70,7 +70,10 @@ static void secmon_init(struct secmon_params *params, int bsp)
 	smc_init();
 	psci_init();
 
-	arch_run_on_all_cpus_async(&action);
+	/* Make sure all non-BSP CPUs take action before the BSP. */
+	arch_run_on_all_cpus_but_self_async(&action);
+	/* Turn on BSP. */
+	start_up_cpu(NULL);
 
 	printk(BIOS_ERR, "CPU turn on failed for BSP.\n");
 	while (1)