diff --git a/CMakeLists.txt b/CMakeLists.txt
deleted file mode 100644
index 09246ef2e..000000000
--- a/CMakeLists.txt
+++ /dev/null
@@ -1,56 +0,0 @@
-if(CONFIG_MBEDTLS)
-zephyr_interface_library_named(mbedTLS)
-
-if(CONFIG_MBEDTLS_BUILTIN)
-  target_compile_definitions(mbedTLS INTERFACE
-	  MBEDTLS_CONFIG_FILE="${CONFIG_MBEDTLS_CFG_FILE}"
-	)
-
-  target_include_directories(mbedTLS INTERFACE
-	  include
-	  configs
-	)
-
-  zephyr_library()
-
-  file(GLOB
-    mbedtls_sources # This is an output parameter
-    library/*.c
-    )
-
-  zephyr_library_sources(
-    zephyr_init.c
-    ${mbedtls_sources}
-  )
-
-  zephyr_library_app_memory(k_mbedtls_partition)
-if(CONFIG_ARCH_POSIX AND CONFIG_ASAN AND NOT CONFIG_64BIT)
-  # i386 assembly code used in MBEDTLS does not compile with size optimization
-  # if address sanitizer is enabled, as such switch default optimization level
-  # to speed
-  set_property(SOURCE library/bignum.c APPEND PROPERTY COMPILE_OPTIONS
-      "${OPTIMIZE_FOR_SPEED_FLAG}")
-endif ()
-
-  zephyr_library_link_libraries(mbedTLS)
-else()
-  assert(CONFIG_MBEDTLS_LIBRARY "MBEDTLS was enabled, but neither BUILTIN or LIBRARY was selected.")
-
-  # NB: CONFIG_MBEDTLS_LIBRARY is not regression tested and is
-  # therefore susceptible to bit rot
-
-  target_include_directories(mbedTLS INTERFACE
-	${CONFIG_MBEDTLS_INSTALL_PATH}
-	)
-
-  zephyr_link_libraries(
-    mbedtls_external
-    -L${CONFIG_MBEDTLS_INSTALL_PATH}
-    gcc
-    )
-  # Lib mbedtls_external depends on libgcc (I assume?) so to allow
-  # mbedtls_external to link with gcc we need to ensure it is placed
-  # after mbedtls_external on the linkers command line.
-endif()
-
-endif()
diff --git a/zephyr/module.yml b/zephyr/module.yml
index eb317c3ce..ab1e2b0f6 100644
--- a/zephyr/module.yml
+++ b/zephyr/module.yml
@@ -1,2 +1,3 @@
 build:
-  cmake: .
+  cmake-ext: True
+  kconfig-ext: True
diff --git a/zephyr_init.c b/zephyr_init.c
deleted file mode 100644
index ecd9fe428..000000000
--- a/zephyr_init.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/** @file
- * @brief mbed TLS initialization
- *
- * Initialize the mbed TLS library like setup the heap etc.
- */
-
-/*
- * Copyright (c) 2017 Intel Corporation
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#include <init.h>
-#include <app_memory/app_memdomain.h>
-
-#if defined(CONFIG_MBEDTLS)
-#if !defined(CONFIG_MBEDTLS_CFG_FILE)
-#include "mbedtls/config.h"
-#else
-#include CONFIG_MBEDTLS_CFG_FILE
-#endif /* CONFIG_MBEDTLS_CFG_FILE */
-#endif
-
-#if defined(CONFIG_MBEDTLS_ENABLE_HEAP) && \
-					defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-#include <mbedtls/memory_buffer_alloc.h>
-
-#if !defined(CONFIG_MBEDTLS_HEAP_SIZE)
-#error "Please set heap size to be used. Set value to CONFIG_MBEDTLS_HEAP_SIZE \
-option."
-#endif
-
-static unsigned char _mbedtls_heap[CONFIG_MBEDTLS_HEAP_SIZE];
-
-static void init_heap(void)
-{
-	mbedtls_memory_buffer_alloc_init(_mbedtls_heap, sizeof(_mbedtls_heap));
-}
-#else
-#define init_heap(...)
-#endif /* CONFIG_MBEDTLS_ENABLE_HEAP && MBEDTLS_MEMORY_BUFFER_ALLOC_C */
-
-static int _mbedtls_init(const struct device *device)
-{
-	ARG_UNUSED(device);
-
-	init_heap();
-
-	return 0;
-}
-
-SYS_INIT(_mbedtls_init, POST_KERNEL, 0);