Separate the generic part of SP deployments

Move the non opteesp environment dependent code of SP deployments into
a separate directory and split CMake files into a generic and an
environment specific part.

Signed-off-by: Imre Kis <imre.kis@arm.com>
Change-Id: I4f09d6d3adef07644e98f2a05d6cb077a92b385b
diff --git a/deployments/protected-storage/common/ps_sp.c b/deployments/protected-storage/common/ps_sp.c
new file mode 100644
index 0000000..1b47710
--- /dev/null
+++ b/deployments/protected-storage/common/ps_sp.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2020-2022, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <ffa_api.h>
+#include <components/rpc/common/endpoint/rpc_interface.h>
+#include <components/rpc/ffarpc/endpoint/ffarpc_call_ep.h>
+#include <components/service/secure_storage/factory/storage_factory.h>
+#include <components/service/secure_storage/frontend/secure_storage_provider/secure_storage_provider.h>
+#include <sp_api.h>
+#include <sp_messaging.h>
+#include <sp_rxtx.h>
+#include <trace.h>
+
+uint16_t own_id = 0;
+static uint8_t tx_buffer[4096] __aligned(4096);
+static uint8_t rx_buffer[4096] __aligned(4096);
+
+void sp_main(struct ffa_init_info *init_info)
+{
+	ffa_result ffa_res;
+	sp_result sp_res;
+	struct rpc_interface *secure_storage_iface;
+	struct ffa_call_ep ffa_call_ep;
+	struct sp_msg req_msg = { 0 };
+	struct sp_msg resp_msg = { 0 };
+	struct secure_storage_provider secure_storage_provider;
+	struct storage_backend *storage_backend;
+
+	/* Boot */
+	(void) init_info;
+
+	ffa_res = ffa_id_get(&own_id);
+	if (ffa_res != FFA_OK) {
+		EMSG("id get error: %d", ffa_res);
+	}
+
+	sp_res = sp_rxtx_buffer_map(tx_buffer, rx_buffer, sizeof(rx_buffer));
+	if (sp_res != SP_RESULT_OK) {
+		EMSG("rxtx map error: %d", sp_res);
+	}
+
+	storage_backend = storage_factory_create(storage_factory_security_class_PROTECTED);
+	secure_storage_iface = secure_storage_provider_init(&secure_storage_provider, storage_backend);
+	ffa_call_ep_init(&ffa_call_ep, secure_storage_iface);
+
+	/* End of boot phase */
+	sp_msg_wait(&req_msg);
+
+	while (1) {
+		ffa_call_ep_receive(&ffa_call_ep, &req_msg, &resp_msg);
+
+		resp_msg.source_id = req_msg.destination_id;
+		resp_msg.destination_id = req_msg.source_id;
+
+		sp_msg_send_direct_resp(&resp_msg, &req_msg);
+	}
+}
+
+void sp_interrupt_handler(uint32_t interrupt_id)
+{
+	(void)interrupt_id;
+}