Platform hook for SMC forwarding return path.
Bug: 132421542
Change-Id: If931014ccc91254f164dc8875bdbf00de8477e4a
diff --git a/inc/hf/arch/plat/smc.h b/inc/hf/arch/plat/smc.h
new file mode 100644
index 0000000..29493fc
--- /dev/null
+++ b/inc/hf/arch/plat/smc.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2019 The Hafnium Authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "vmapi/hf/spci.h"
+
+/**
+ * Called after an SMC has been forwarded. `args` contains the arguments passed
+ * to the SMC and `ret` contains the return values that will be set in the vCPU
+ * registers after this call returns.
+ */
+void plat_smc_post_forward(struct spci_value args, struct spci_value *ret);