diff --git a/3rd-party/mbedtls/include/mbedtls/config.h b/3rd-party/mbedtls/include/mbedtls/config.h
index f7cc12eb1..511f1b701 100644
--- a/3rd-party/mbedtls/include/mbedtls/config.h
+++ b/3rd-party/mbedtls/include/mbedtls/config.h
@@ -32,6 +32,13 @@
#define _CRT_SECURE_NO_DEPRECATE 1
#endif
+#define MBEDTLS_PLATFORM_STD_CALLOC btstack_calloc
+#define MBEDTLS_PLATFORM_STD_FREE btstack_free
+
+#include <stddef.h>
+void * btstack_calloc(size_t count, size_t size);
+void btstack_free(void * data);
+
/**
* \name SECTION: System support
*
@@ -73,7 +80,7 @@
*
* Comment if your system does not support time functions
*/
-#define MBEDTLS_HAVE_TIME
+// #define MBEDTLS_HAVE_TIME
/**
* \def MBEDTLS_HAVE_TIME_DATE
@@ -85,7 +92,7 @@
*
* Comment if your system does not have a correct clock.
*/
-#define MBEDTLS_HAVE_TIME_DATE
+// #define MBEDTLS_HAVE_TIME_DATE
/**
* \def MBEDTLS_PLATFORM_MEMORY
@@ -109,7 +116,7 @@
*
* Enable this layer to allow use of alternative memory allocators.
*/
-//#define MBEDTLS_PLATFORM_MEMORY
+#define MBEDTLS_PLATFORM_MEMORY
/**
* \def MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
diff --git a/3rd-party/mbedtls/library/platform.c b/3rd-party/mbedtls/library/platform.c
new file mode 100644
index 000000000..d634c6277
--- /dev/null
+++ b/3rd-party/mbedtls/library/platform.c
@@ -0,0 +1,193 @@
+/*
+ * Platform abstraction layer
+ *
+ * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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
+ *
+ * http://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.
+ *
+ * This file is part of mbed TLS (https://tls.mbed.org)
+ */
+
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "mbedtls/config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#if defined(MBEDTLS_PLATFORM_C)
+
+#include "mbedtls/platform.h"
+
+#if defined(MBEDTLS_PLATFORM_MEMORY)
+#if !defined(MBEDTLS_PLATFORM_STD_CALLOC)
+static void *platform_calloc_uninit( size_t n, size_t size )
+{
+ ((void) n);
+ ((void) size);
+ return( NULL );
+}
+
+#define MBEDTLS_PLATFORM_STD_CALLOC platform_calloc_uninit
+#endif /* !MBEDTLS_PLATFORM_STD_CALLOC */
+
+#if !defined(MBEDTLS_PLATFORM_STD_FREE)
+static void platform_free_uninit( void *ptr )
+{
+ ((void) ptr);
+}
+
+#define MBEDTLS_PLATFORM_STD_FREE platform_free_uninit
+#endif /* !MBEDTLS_PLATFORM_STD_FREE */
+
+void * (*mbedtls_calloc)( size_t, size_t ) = MBEDTLS_PLATFORM_STD_CALLOC;
+void (*mbedtls_free)( void * ) = MBEDTLS_PLATFORM_STD_FREE;
+
+int mbedtls_platform_set_calloc_free( void * (*calloc_func)( size_t, size_t ),
+ void (*free_func)( void * ) )
+{
+ mbedtls_calloc = calloc_func;
+ mbedtls_free = free_func;
+ return( 0 );
+}
+#endif /* MBEDTLS_PLATFORM_MEMORY */
+
+#if defined(_WIN32)
+#include <stdarg.h>
+int mbedtls_platform_win32_snprintf( char *s, size_t n, const char *fmt, ... )
+{
+ int ret;
+ va_list argp;
+
+ /* Avoid calling the invalid parameter handler by checking ourselves */
+ if( s == NULL || n == 0 || fmt == NULL )
+ return( -1 );
+
+ va_start( argp, fmt );
+#if defined(_TRUNCATE)
+ ret = _vsnprintf_s( s, n, _TRUNCATE, fmt, argp );
+#else
+ ret = _vsnprintf( s, n, fmt, argp );
+ if( ret < 0 || (size_t) ret == n )
+ {
+ s[n-1] = '\0';
+ ret = -1;
+ }
+#endif
+ va_end( argp );
+
+ return( ret );
+}
+#endif
+
+#if defined(MBEDTLS_PLATFORM_SNPRINTF_ALT)
+#if !defined(MBEDTLS_PLATFORM_STD_SNPRINTF)
+/*
+ * Make dummy function to prevent NULL pointer dereferences
+ */
+static int platform_snprintf_uninit( char * s, size_t n,
+ const char * format, ... )
+{
+ ((void) s);
+ ((void) n);
+ ((void) format);
+ return( 0 );
+}
+
+#define MBEDTLS_PLATFORM_STD_SNPRINTF platform_snprintf_uninit
+#endif /* !MBEDTLS_PLATFORM_STD_SNPRINTF */
+
+int (*mbedtls_snprintf)( char * s, size_t n,
+ const char * format,
+ ... ) = MBEDTLS_PLATFORM_STD_SNPRINTF;
+
+int mbedtls_platform_set_snprintf( int (*snprintf_func)( char * s, size_t n,
+ const char * format,
+ ... ) )
+{
+ mbedtls_snprintf = snprintf_func;
+ return( 0 );
+}
+#endif /* MBEDTLS_PLATFORM_SNPRINTF_ALT */
+
+#if defined(MBEDTLS_PLATFORM_PRINTF_ALT)
+#if !defined(MBEDTLS_PLATFORM_STD_PRINTF)
+/*
+ * Make dummy function to prevent NULL pointer dereferences
+ */
+static int platform_printf_uninit( const char *format, ... )
+{
+ ((void) format);
+ return( 0 );
+}
+
+#define MBEDTLS_PLATFORM_STD_PRINTF platform_printf_uninit
+#endif /* !MBEDTLS_PLATFORM_STD_PRINTF */
+
+int (*mbedtls_printf)( const char *, ... ) = MBEDTLS_PLATFORM_STD_PRINTF;
+
+int mbedtls_platform_set_printf( int (*printf_func)( const char *, ... ) )
+{
+ mbedtls_printf = printf_func;
+ return( 0 );
+}
+#endif /* MBEDTLS_PLATFORM_PRINTF_ALT */
+
+#if defined(MBEDTLS_PLATFORM_FPRINTF_ALT)
+#if !defined(MBEDTLS_PLATFORM_STD_FPRINTF)
+/*
+ * Make dummy function to prevent NULL pointer dereferences
+ */
+static int platform_fprintf_uninit( FILE *stream, const char *format, ... )
+{
+ ((void) stream);
+ ((void) format);
+ return( 0 );
+}
+
+#define MBEDTLS_PLATFORM_STD_FPRINTF platform_fprintf_uninit
+#endif /* !MBEDTLS_PLATFORM_STD_FPRINTF */
+
+int (*mbedtls_fprintf)( FILE *, const char *, ... ) =
+ MBEDTLS_PLATFORM_STD_FPRINTF;
+
+int mbedtls_platform_set_fprintf( int (*fprintf_func)( FILE *, const char *, ... ) )
+{
+ mbedtls_fprintf = fprintf_func;
+ return( 0 );
+}
+#endif /* MBEDTLS_PLATFORM_FPRINTF_ALT */
+
+#if defined(MBEDTLS_PLATFORM_EXIT_ALT)
+#if !defined(MBEDTLS_PLATFORM_STD_EXIT)
+/*
+ * Make dummy function to prevent NULL pointer dereferences
+ */
+static void platform_exit_uninit( int status )
+{
+ ((void) status);
+}
+
+#define MBEDTLS_PLATFORM_STD_EXIT platform_exit_uninit
+#endif /* !MBEDTLS_PLATFORM_STD_EXIT */
+
+void (*mbedtls_exit)( int status ) = MBEDTLS_PLATFORM_STD_EXIT;
+
+int mbedtls_platform_set_exit( void (*exit_func)( int status ) )
+{
+ mbedtls_exit = exit_func;
+ return( 0 );
+}
+#endif /* MBEDTLS_PLATFORM_EXIT_ALT */
+
+#endif /* MBEDTLS_PLATFORM_C */
diff --git a/example/Makefile.inc b/example/Makefile.inc
index 31d7fcb51..899284173 100644
--- a/example/Makefile.inc
+++ b/example/Makefile.inc
@@ -63,6 +63,7 @@ MBEDTLS = \
bignum.c \
ecp.c \
ecp_curves.c \
+ platform.c \
EXAMPLES = \
ancs_client_demo \
diff --git a/src/ble/sm.c b/src/ble/sm.c
index 702058e3a..8c2362e16 100644
--- a/src/ble/sm.c
+++ b/src/ble/sm.c
@@ -71,6 +71,15 @@
#include "mbedtls/ecp.h"
#endif
+void * btstack_calloc(size_t count, size_t size){
+ void * result = calloc(count, size);
+ printf("btstack_calloc(%zu, %zu) -> res %p\n", count, size, result);
+ return result;
+}
+
+void btstack_free(void * data){
+ printf("btstack_free(%p)\n", data);
+}
//
// SM internal types and globals
//