diff --git a/lib/psci/psci_common.c b/lib/psci/psci_common.c
index f233be1..5ce562f 100644
--- a/lib/psci/psci_common.c
+++ b/lib/psci/psci_common.c
@@ -76,6 +76,14 @@
 	(PLAT_MAX_PWR_LVL >= PSCI_CPU_PWR_LVL),
 	assert_platform_max_pwrlvl_check);
 
+#if PSCI_OS_INIT_MODE
+/*******************************************************************************
+ * The power state coordination mode used in CPU_SUSPEND.
+ * Defaults to platform-coordinated mode.
+ ******************************************************************************/
+suspend_mode_t psci_suspend_mode = PLAT_COORD;
+#endif
+
 /*
  * The plat_local_state used by the platform is one of these types: RUN,
  * RETENTION and OFF. The platform can define further sub-states for each type
@@ -154,7 +162,7 @@
 }
 
 /*******************************************************************************
- * This function verifies that the all the other cores in the system have been
+ * This function verifies that all the other cores in the system have been
  * turned OFF and the current CPU is the last running CPU in the system.
  * Returns true, if the current CPU is the last ON CPU or false otherwise.
  ******************************************************************************/
@@ -179,6 +187,23 @@
 }
 
 /*******************************************************************************
+ * This function verifies that all cores in the system have been turned ON.
+ * Returns true, if all CPUs are ON or false otherwise.
+ ******************************************************************************/
+static bool psci_are_all_cpus_on(void)
+{
+	unsigned int cpu_idx;
+
+	for (cpu_idx = 0; cpu_idx < psci_plat_core_count; cpu_idx++) {
+		if (psci_get_aff_info_state_by_idx(cpu_idx) == AFF_STATE_OFF) {
+			return false;
+		}
+	}
+
+	return true;
+}
+
+/*******************************************************************************
  * Routine to return the maximum power level to traverse to after a cpu has
  * been physically powered up. It is expected to be called immediately after
  * reset from assembler code.
@@ -1050,3 +1075,29 @@
 
 	return true;
 }
+
+/*******************************************************************************
+ * This function verifies that all cores in the system have been turned ON.
+ * Returns true, if all CPUs are ON or false otherwise.
+ *
+ * This API has following differences with psci_are_all_cpus_on
+ *  1. PSCI states are locked
+ ******************************************************************************/
+bool psci_are_all_cpus_on_safe(void)
+{
+	unsigned int this_core = plat_my_core_pos();
+	unsigned int parent_nodes[PLAT_MAX_PWR_LVL] = {0};
+
+	psci_get_parent_pwr_domain_nodes(this_core, PLAT_MAX_PWR_LVL, parent_nodes);
+
+	psci_acquire_pwr_domain_locks(PLAT_MAX_PWR_LVL, parent_nodes);
+
+	if (!psci_are_all_cpus_on()) {
+		psci_release_pwr_domain_locks(PLAT_MAX_PWR_LVL, parent_nodes);
+		return false;
+	}
+
+	psci_release_pwr_domain_locks(PLAT_MAX_PWR_LVL, parent_nodes);
+
+	return true;
+}