diff --git a/deployments/se-proxy/common/service_proxy_factory.c b/deployments/se-proxy/common/service_proxy_factory.c
index acfb6e8..bacab1d 100644
--- a/deployments/se-proxy/common/service_proxy_factory.c
+++ b/deployments/se-proxy/common/service_proxy_factory.c
@@ -1,29 +1,42 @@
 /*
- * Copyright (c) 2021, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2021-2023, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2021-2023, Linaro Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
 #include <stddef.h>
+#include <psa/sid.h>
 #include <rpc/common/endpoint/rpc_interface.h>
+#include <rpc/psa_ipc/caller/sp/psa_ipc_caller.h>
 #include <service/attestation/provider/attest_provider.h>
 #include <service/attestation/provider/serializer/packed-c/packedc_attest_provider_serializer.h>
 #include <service/crypto/factory/crypto_provider_factory.h>
 #include <service/secure_storage/frontend/secure_storage_provider/secure_storage_provider.h>
+#include <trace.h>
 
-/* Stub backends */
-#include <service/crypto/backend/stub/stub_crypto_backend.h>
-#include <service/secure_storage/backend/mock_store/mock_store.h>
+/* backends */
+#include <service/crypto/backend/psa_ipc/crypto_ipc_backend.h>
+#include <service/secure_storage/backend/secure_storage_ipc/secure_storage_ipc.h>
+#include <service/attestation/client/psa/iat_client.h>
+
+struct psa_ipc_caller psa_ipc;
 
 struct rpc_interface *attest_proxy_create(void)
 {
 	struct rpc_interface *attest_iface;
+	struct rpc_caller *attest_caller;
 
 	/* Static objects for proxy instance */
 	static struct attest_provider attest_provider;
 
+	attest_caller = psa_ipc_caller_init(&psa_ipc);
+	if (!attest_caller)
+		return NULL;
+
 	/* Initialize the service provider */
 	attest_iface = attest_provider_init(&attest_provider);
+	psa_iat_client_init(&psa_ipc.rpc_caller);
 
 	attest_provider_register_serializer(&attest_provider,
 		TS_RPC_ENCODING_PACKED_C, packedc_attest_provider_serializer_instance());
@@ -35,32 +48,49 @@
 {
 	struct rpc_interface *crypto_iface = NULL;
 	struct crypto_provider *crypto_provider;
+	struct rpc_caller *crypto_caller;
 
-	if (stub_crypto_backend_init() == PSA_SUCCESS) {
+	crypto_caller = psa_ipc_caller_init(&psa_ipc);
+	if (!crypto_caller)
+		return NULL;
 
-		crypto_provider = crypto_provider_factory_create();
-		crypto_iface = service_provider_get_rpc_interface(&crypto_provider->base_provider);
-	}
+	if (crypto_ipc_backend_init(&psa_ipc.rpc_caller) != PSA_SUCCESS)
+		return NULL;
+
+	crypto_provider = crypto_provider_factory_create();
+	crypto_iface = service_provider_get_rpc_interface(&crypto_provider->base_provider);
 
 	return crypto_iface;
 }
 
 struct rpc_interface *ps_proxy_create(void)
 {
-	static struct mock_store ps_backend;
 	static struct secure_storage_provider ps_provider;
+	static struct secure_storage_ipc ps_backend;
+	struct rpc_caller *storage_caller;
+	struct storage_backend *backend;
 
-	struct storage_backend *backend = mock_store_init(&ps_backend);
+	storage_caller = psa_ipc_caller_init(&psa_ipc);
+	if (!storage_caller)
+		return NULL;
+	backend = secure_storage_ipc_init(&ps_backend, &psa_ipc.rpc_caller);
+	ps_backend.service_handle = TFM_PROTECTED_STORAGE_SERVICE_HANDLE;
 
 	return secure_storage_provider_init(&ps_provider, backend);
 }
 
 struct rpc_interface *its_proxy_create(void)
 {
-	static struct mock_store its_backend;
 	static struct secure_storage_provider its_provider;
+	static struct secure_storage_ipc its_backend;
+	struct rpc_caller *storage_caller;
+	struct storage_backend *backend;
 
-	struct storage_backend *backend = mock_store_init(&its_backend);
+	storage_caller = psa_ipc_caller_init(&psa_ipc);
+	if (!storage_caller)
+		return NULL;
+	backend = secure_storage_ipc_init(&its_backend, &psa_ipc.rpc_caller);
+	its_backend.service_handle = TFM_INTERNAL_TRUSTED_STORAGE_SERVICE_HANDLE;
 
 	return secure_storage_provider_init(&its_provider, backend);
 }
diff --git a/deployments/se-proxy/opteesp/default_se-proxy.dts.in b/deployments/se-proxy/opteesp/default_se-proxy.dts.in
index 5748d2f..a191c76 100644
--- a/deployments/se-proxy/opteesp/default_se-proxy.dts.in
+++ b/deployments/se-proxy/opteesp/default_se-proxy.dts.in
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021-2022, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2021-2023, Arm Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -17,4 +17,26 @@
 	xlat-granule = <0>; /* 4KiB */
 	messaging-method = <3>; /* Direct messaging only */
 	legacy-elf-format = <1>;
+
+	device-regions {
+		compatible = "arm,ffa-manifest-device-regions";
+		mhu-sender {
+			/* Armv8 A Foundation Platform values */
+			base-address = <0x00000000 0x1b820000>;
+			pages-count = <16>;
+			attributes = <0x3>; /* read-write */
+		};
+		mhu-receiver {
+			/* Armv8 A Foundation Platform values */
+			base-address = <0x00000000 0x1b830000>;
+			pages-count = <16>;
+			attributes = <0x3>; /* read-write */
+		};
+		openamp-virtio {
+			/* Armv8 A Foundation Platform values */
+			base-address = <0x00000000 0x88000000>;
+			pages-count = <256>;
+			attributes = <0x3>; /* read-write */
+		};
+	};
 };
diff --git a/deployments/se-proxy/se-proxy.cmake b/deployments/se-proxy/se-proxy.cmake
index 368f9b4..76056c1 100644
--- a/deployments/se-proxy/se-proxy.cmake
+++ b/deployments/se-proxy/se-proxy.cmake
@@ -19,6 +19,7 @@
 		"components/config/loader/sp"
 		"components/messaging/ffa/libsp"
 		"components/rpc/ffarpc/endpoint"
+		"components/rpc/psa_ipc"
 		"components/rpc/common/interface"
 		"components/rpc/common/demux"
 		"components/service/common/include"
@@ -44,16 +45,19 @@
 		"components/service/crypto/factory/full"
 		"components/service/secure_storage/include"
 		"components/service/secure_storage/frontend/secure_storage_provider"
+		"components/service/secure_storage/backend/secure_storage_ipc"
 		"components/service/attestation/include"
 		"components/service/attestation/provider"
 		"components/service/attestation/provider/serializer/packed-c"
+		"components/service/attestation/reporter/psa_ipc"
+		"components/service/attestation/client/psa_ipc"
+		"components/messaging/openamp/sp"
 
 		# Stub service provider backends
 		"components/rpc/dummy"
 		"components/rpc/common/caller"
-		"components/service/attestation/reporter/stub"
-		"components/service/attestation/key_mngr/stub"
-		"components/service/crypto/backend/stub"
+		"components/service/attestation/key_mngr/local"
+		"components/service/crypto/backend/psa_ipc"
 		"components/service/crypto/client/psa"
 		"components/service/secure_storage/backend/mock_store"
 )
@@ -73,6 +77,13 @@
 target_link_libraries(se-proxy PRIVATE nanopb::protobuf-nanopb-static)
 protobuf_generate_all(TGT "se-proxy" NAMESPACE "protobuf" BASE_DIR "${TS_ROOT}/protocols")
 
+# libmetal
+include(../../../external/openamp/libmetal.cmake)
+
+# OpenAMP
+include(../../../external/openamp/openamp.cmake)
+target_link_libraries(se-proxy PRIVATE openamp libmetal)
+
 #################################################################
 
 target_include_directories(se-proxy PRIVATE