Rework the PSCI migrate APIs
This patch reworks the PSCI MIGRATE, MIGRATE_INFO_TYPE and
MIGRATE_INFO_UP_CPU support for Trusted Firmware. The
implementation does the appropriate validation of parameters
and invokes the appropriate hook exported by the SPD.
The TSP is a MP Trusted OS. Hence the ability to actually
migrate a Trusted OS has not been implemented. The
corresponding function is not populated in the spd_pm_hooks
structure for the TSPD.
The `spd_pm_ops_t` has undergone changes with this patch.
SPD PORTS MAY NEED TO BE UPDATED.
Fixes ARM-software/tf-issues#249
Change-Id: Iabd87521bf7c530a5e4506b6d3bfd4f1bf87604f
diff --git a/services/std_svc/psci/psci_common.c b/services/std_svc/psci/psci_common.c
index d8c8618..898a343 100644
--- a/services/std_svc/psci/psci_common.c
+++ b/services/std_svc/psci/psci_common.c
@@ -562,6 +562,29 @@
}
/*******************************************************************************
+ * This function invokes the migrate info hook in the spd_pm_ops. It performs
+ * the necessary return value validation. If the Secure Payload is UP and
+ * migrate capable, it returns the mpidr of the CPU on which the Secure payload
+ * is resident through the mpidr parameter. Else the value of the parameter on
+ * return is undefined.
+ ******************************************************************************/
+int psci_spd_migrate_info(uint64_t *mpidr)
+{
+ int rc;
+
+ if (!psci_spd_pm || !psci_spd_pm->svc_migrate_info)
+ return PSCI_E_NOT_SUPPORTED;
+
+ rc = psci_spd_pm->svc_migrate_info(mpidr);
+
+ assert(rc == PSCI_TOS_UP_MIG_CAP || rc == PSCI_TOS_NOT_UP_MIG_CAP \
+ || rc == PSCI_TOS_NOT_PRESENT_MP || rc == PSCI_E_NOT_SUPPORTED);
+
+ return rc;
+}
+
+
+/*******************************************************************************
* This function prints the state of all affinity instances present in the
* system
******************************************************************************/