userspace: Add userspace proxy

app/overlays/ptl/userspace_overlay.conf

@@ -0,0 +1,21 @@
+CONFIG_USERSPACE=y
+CONFIG_XTENSA_MMU_NUM_L2_TABLES=86
+CONFIG_MAX_THREAD_BYTES=4
+
+CONFIG_INIT_STACKS=n
+CONFIG_THREAD_STACK_INFO=n
+CONFIG_DYNAMIC_THREAD_PREFER_ALLOC=y
+CONFIG_DYNAMIC_THREAD=y
+CONFIG_DYNAMIC_THREAD_POOL_SIZE=4
+CONFIG_DYNAMIC_THREAD_ALLOC=n
+# IADK module adapter store some buffers on stack, so we need to increase stack size
+CONFIG_DYNAMIC_THREAD_STACK_SIZE=8192
+CONFIG_SOF_STACK_SIZE=8192
+
+# Each security domain has its own worker to service requests to non-privileged modules.
+# Several instances of the same module or modules signed by the same provider can share
+# single worker to save resources
+CONFIG_SEC_DOMAIN_MAX_NUMBER=3
+
+# Number of supported non-privileged modules
+CONFIG_UM_MODULESMAX_NUM=8

src/audio/module_adapter/CMakeLists.txt

@@ -42,6 +42,12 @@ if(zephyr) ###  Zephyr ###
 		library/native_system_service.c
 	)
 
+	if(CONFIG_USERSPACE)
+		zephyr_library_sources_ifdef(CONFIG_INTEL_MODULES
+			library/userspace_proxy.c
+		)
+	endif()
+
 	zephyr_library_sources_ifdef(CONFIG_PASSTHROUGH_CODEC
 		module/passthrough.c
 	)