refactor: report FFA_YIELD
Report `FFA_YIELD` argument to `FFA_FEATURES` as supported when caller
is SP.
Change-Id: I38271a113559c05759fa8a38fd87c11d8a8456b2
Signed-off-by: Karl Meakin <karl.meakin@arm.com>
diff --git a/src/api.c b/src/api.c
index 23af32e..e597391 100644
--- a/src/api.c
+++ b/src/api.c
@@ -2634,6 +2634,20 @@
}
return api_ffa_feature_success(0);
+ /*
+ * This function is restricted to the secure virtual FF-A instance (i.e.
+ * only report success to SPs).
+ */
+ case FFA_YIELD_32:
+ if (!vm_id_is_current_world(current->vm->id)) {
+ dlog_verbose(
+ "FFA_FEATURES: %s is only supported at secure "
+ "virtual FF-A instance\n",
+ ffa_func_name(FFA_YIELD_32));
+ return ffa_error(FFA_NOT_SUPPORTED);
+ }
+ return api_ffa_feature_success(0);
+
case FFA_RXTX_MAP_64: {
if (FFA_VERSION_1_2 > FFA_VERSION_COMPILED) {
return ffa_error(FFA_NOT_SUPPORTED);