diff --git a/drivers/DeviceUid.cpp b/drivers/DeviceUid.cpp
new file mode 100644
index 0000000000..ce6f0f5ccd
--- /dev/null
+++ b/drivers/DeviceUid.cpp
@@ -0,0 +1,70 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 ARM Limited
+ *
+ * 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.
+ */
+
+#include "hal/device_uid_api.h"
+#include "platform/mbed_assert.h"
+#include "platform/CriticalSectionLock.h"
+#include "drivers/DeviceUid.h"
+
+#if DEVICE_DEVICEUID
+
+namespace mbed {
+
+uint8_t DeviceUid::_uidbuf[MBED_DEVICEUID_SIZE] = {0};
+uint8_t* DeviceUid::_uidptr = NULL;
+char DeviceUid::_strbuf[DEVICEUID_STRING_BUFFER_SIZE] = {'\0'};
+char* DeviceUid::_strptr = NULL;
+#ifndef MBED_DEVICEUID_STR_SIZE_MAX
+const char DeviceUid::_hexChars[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
+#endif
+
+DeviceUid::DeviceUid()
+{
+    populate_uid_buf();
+}
+
+void DeviceUid::populate_uid_buf()
+{
+    if (_uidptr == NULL) {
+        CriticalSectionLock lock;
+        device_uid_get_uid(_uidbuf);
+        _uidptr = _uidbuf;
+    }
+}
+
+void DeviceUid::populate_str_buf()
+{
+    if (_strptr == NULL) {
+        CriticalSectionLock lock;
+#ifdef MBED_DEVICEUID_STR_SIZE_MAX
+        device_uid_get_str(_strbuf);
+        _strptr = _strbuf;
+#else
+        int pos = 0;
+        populate_uid_buf();
+        for (int i = 0; i < MBED_DEVICEUID_SIZE; ++i) {
+            _strbuf[pos++] = _hexChars[_uidptr[i] >> 4];
+            _strbuf[pos++] = _hexChars[_uidptr[i] & 0x0F];
+        }
+        _strbuf[pos] = '\0';
+        _strptr = _strbuf;
+#endif
+    }
+}
+
+} // namespace mbed
+
+#endif
diff --git a/drivers/DeviceUid.h b/drivers/DeviceUid.h
new file mode 100644
index 0000000000..9b71238d79
--- /dev/null
+++ b/drivers/DeviceUid.h
@@ -0,0 +1,128 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 ARM Limited
+ *
+ * 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.
+ */
+#ifndef MBED_DEVICEUID_H
+#define MBED_DEVICEUID_H
+
+#include "platform/platform.h"
+
+#if defined(DEVICE_DEVICEUID) || defined(DOXYGEN_ONLY)
+
+#ifdef MBED_DEVICEUID_STR_SIZE_MAX
+#define DEVICEUID_STRING_BUFFER_SIZE  MBED_DEVICEUID_STR_SIZE_MAX
+#else
+#define DEVICEUID_STRING_BUFFER_SIZE (MBED_DEVICEUID_SIZE * 2 + 1)
+#endif
+
+namespace mbed {
+/** \addtogroup drivers */
+
+/** DEVICE UID reader class
+ *
+ * @note Synchronization level: Interrupt safe
+ * @ingroup drivers
+ */
+class DeviceUid {
+public:
+    /** DeviceUid constructor
+     */
+    DeviceUid();
+    
+    /** Get size of DEVICE UID in bytes
+     * 
+     * @return Size of device's DEVICE UID in bytes
+     */
+    int size()
+    {
+        return MBED_DEVICEUID_SIZE;
+    }
+    
+    /** Get DEVICE UID data pointer
+     * 
+     * @return Pointer to uid data buffer
+     */
+    const uint8_t *data()
+    {
+        populate_uid_buf();
+        return _uidptr;
+    }
+    
+    /** Get DEVICE UID vendor string
+     * 
+     * @return Pointer to zero terminated uid vendor string
+     * 
+     * @note
+     * If vendor did not define MBED_DEVICEUID_STR_SIZE_MAX, DeviceUid driver will
+     * assume the HAL interface function device_uid_get_str() is not implemented
+     * on the target, and instead the driver will construct just an ASCII
+     * string out of the uid byte buffer contents.
+     * 
+     */
+    const char *c_str()
+    {
+        populate_str_buf();
+        return _strptr;
+    }
+    
+    /** Overload operator for byte pointer
+     * 
+     * @return Pointer to uid data buffer
+     */
+    operator const uint8_t*()
+    {
+        populate_uid_buf();
+        return _uidptr;
+    }
+    
+    operator const char*()
+    {
+        populate_str_buf();
+        return _strptr;
+    }
+
+    /** Overload operator for array subscript
+     * 
+     * @param x DEVICE UID Byte index
+     * 
+     * @return Byte located at index x
+     */
+    uint8_t operator[](int x)
+    {
+        if (x >= 0 && x < MBED_DEVICEUID_SIZE) {
+            populate_uid_buf();
+            return _uidptr[x];
+        }
+
+        return 0x00;
+    }
+    
+private:
+    void populate_uid_buf();
+    void populate_str_buf();
+    
+    static uint8_t _uidbuf[MBED_DEVICEUID_SIZE];
+    static uint8_t* _uidptr;
+    static char _strbuf[DEVICEUID_STRING_BUFFER_SIZE];
+    static char* _strptr;
+#ifndef MBED_DEVICEUID_STR_SIZE_MAX
+    static const char _hexChars[16];
+#endif
+};
+
+} // namespace mbed
+
+#endif
+
+#endif
diff --git a/hal/device_uid_api.h b/hal/device_uid_api.h
new file mode 100644
index 0000000000..7dc9675637
--- /dev/null
+++ b/hal/device_uid_api.h
@@ -0,0 +1,73 @@
+/** \addtogroup hal */
+/** @{*/
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 ARM Limited
+ *
+ * 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.
+ */
+#ifndef MBED_DEVICE_UID_API_H
+#define MBED_DEVICE_UID_API_H
+
+#include <stddef.h>
+#include "device.h"
+
+#if DEVICE_DEVICEUID
+
+#if !defined(MBED_DEVICEUID_SIZE) || (MBED_DEVICEUID_SIZE == 0)
+#error "DEVICE UID Vendor implementation must define macro MBED_DEVICEUID_SIZE with the non-zero uid size in bytes!"
+#endif
+
+#if !defined(MBED_DEVICEUID_STR_SIZE_MAX) || (MBED_DEVICEUID_STR_SIZE_MAX == 0)
+#warning "DEVICE UID max vendor string length not defined or zero! device_uid_get_str() HAL interface is disabled!"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \defgroup hal_device_uid DEVICEUID hal functions
+ * @{
+ */
+
+/** Get DEVICE UID data bytes
+ * 
+ * @param uid Byte buffer for uid. Must be of size MBED_DEVICEUID_SIZE
+ *
+ */
+void device_uid_get_uid(uint8_t *uid);
+
+#ifdef MBED_DEVICEUID_STR_SIZE_MAX
+/** Get DEVICE UID vendor string
+ * 
+ * @param str Character buffer for vendor specific UID string. Must be of size MBED_DEVICEUID_STR_SIZE_MAX
+ * 
+ * @note
+ * Implementing this function on target side can be used to provide a vendor specific
+ * string describing the contents of the UID.
+ * The string length including terminating zero character must not exceed MBED_DEVICEUID_STR_SIZE_MAX bytes!
+ * 
+ */
+void device_uid_get_str(char *str);
+#endif
+
+/**@}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+#endif
+/** @}*/
diff --git a/mbed.h b/mbed.h
index 1e56e63640..17db75ff07 100644
--- a/mbed.h
+++ b/mbed.h
@@ -70,6 +70,7 @@
 #include "drivers/RawSerial.h"
 #include "drivers/UARTSerial.h"
 #include "drivers/FlashIAP.h"
+#include "drivers/DeviceUid.h"
 
 // mbed Internal components
 #include "drivers/Timer.h"
diff --git a/platform/CriticalSectionLock.h b/platform/CriticalSectionLock.h
index 05649ba198..f20be85ad7 100644
--- a/platform/CriticalSectionLock.h
+++ b/platform/CriticalSectionLock.h
@@ -19,6 +19,7 @@
 #define MBED_CRITICALSECTIONLOCK_H
 
 #include "platform/mbed_critical.h"
+#include "platform/mbed_toolchain.h"
 
 namespace mbed {
 
diff --git a/targets/TARGET_NORDIC/TARGET_NRF5/device_uid_api.c b/targets/TARGET_NORDIC/TARGET_NRF5/device_uid_api.c
new file mode 100644
index 0000000000..0765d07aaf
--- /dev/null
+++ b/targets/TARGET_NORDIC/TARGET_NRF5/device_uid_api.c
@@ -0,0 +1,59 @@
+/* 
+ * Copyright (c) 2017 Nordic Semiconductor ASA
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 
+ *   1. Redistributions of source code must retain the above copyright notice, this list 
+ *      of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form, except as embedded into a Nordic Semiconductor ASA 
+ *      integrated circuit in a product or a software update for such product, must reproduce 
+ *      the above copyright notice, this list of conditions and the following disclaimer in 
+ *      the documentation and/or other materials provided with the distribution.
+ *
+ *   3. Neither the name of Nordic Semiconductor ASA nor the names of its contributors may be 
+ *      used to endorse or promote products derived from this software without specific prior 
+ *      written permission.
+ *
+ *   4. This software, with or without modification, must only be used with a 
+ *      Nordic Semiconductor ASA integrated circuit.
+ *
+ *   5. Any software provided in binary or object form under this license must not be reverse 
+ *      engineered, decompiled, modified and/or disassembled. 
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+
+#include "device.h"
+
+#if DEVICE_DEVICEUID
+
+#include "nrf.h"
+#include "device_uid_api.h"
+
+#define UID_WORDS       2
+
+void device_uid_get_uid(uint8_t *uid)
+{
+    int pos = 0;
+
+    for (int i = (UID_WORDS-1); i >= 0; --i) {
+        for (int j = 3; j >= 0; --j) {
+            uid[pos++] = (uint8_t)((NRF_FICR->DEVICEID[i] >> (j*8)) & 0xFF);
+        }
+    }
+}
+
+#endif
diff --git a/targets/TARGET_STM/device_uid_api.c b/targets/TARGET_STM/device_uid_api.c
new file mode 100644
index 0000000000..1a03811c8b
--- /dev/null
+++ b/targets/TARGET_STM/device_uid_api.c
@@ -0,0 +1,150 @@
+/* mbed Microcontroller Library
+ *******************************************************************************
+ * Copyright (c) 2017, STMicroelectronics
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+#include "device.h"
+
+#if DEVICE_DEVICEUID
+
+#include <string.h>
+#if defined(TARGET_STM32F0)
+#include "stm32f0xx_ll_utils.h"
+#elif defined(TARGET_STM32F1)
+#include "stm32f1xx_ll_utils.h"
+#elif defined(TARGET_STM32F2)
+#include "stm32f2xx_ll_utils.h"
+#elif defined(TARGET_STM32F3)
+#include "stm32f3xx_ll_utils.h"
+#elif defined(TARGET_STM32F4)
+#include "stm32f4xx_ll_utils.h"
+#elif defined(TARGET_STM32F7)
+#include "stm32f7xx_ll_utils.h"
+#elif defined(TARGET_STM32L0)
+#include "stm32l0xx_ll_utils.h"
+#elif defined(TARGET_STM32L1)
+#include "stm32l1xx_ll_utils.h"
+#elif defined(TARGET_STM32L4)
+#include "stm32l4xx_ll_utils.h"
+#else
+#error "Unsupported STM32 device!"
+#endif
+#include "device_uid_api.h"
+
+#define UID_WORDS       3
+
+#ifdef MBED_DEVICEUID_STR_SIZE_MAX
+static int cpu_uid_itoa(int value, char *sp, int radix);
+#endif
+
+void device_uid_get_uid(uint8_t *uid)
+{
+    uint32_t uid_buf[UID_WORDS];
+    int pos = 0;
+
+    uid_buf[0] = LL_GetUID_Word0();
+    uid_buf[1] = LL_GetUID_Word1();
+    uid_buf[2] = LL_GetUID_Word2();
+    
+    for (int i = (UID_WORDS-1); i >= 0; --i) {
+        for (int j = 3; j >= 0; --j) {
+            uid[pos++] = (uint8_t)((uid_buf[i] >> (j*8)) & 0xFF);
+        }
+    }
+}
+
+#ifdef MBED_DEVICEUID_STR_SIZE_MAX
+void device_uid_get_str(char *str)
+{
+    char buffer[16];
+    char lot_number[8];
+    uint8_t wafer_number;
+    uint16_t x, y;
+    uint32_t uid_buf[UID_WORDS];
+
+    uid_buf[0] = LL_GetUID_Word0();
+    uid_buf[1] = LL_GetUID_Word1();
+    uid_buf[2] = LL_GetUID_Word2();
+
+    lot_number[0] = (uid_buf[2] >> 24) & 0x000000FF;
+    lot_number[1] = (uid_buf[2] >> 16) & 0x000000FF;
+    lot_number[2] = (uid_buf[2] >> 8) & 0x000000FF;
+    lot_number[3] = uid_buf[2] & 0x000000FF;
+    lot_number[4] = (uid_buf[1] >> 24) & 0x000000FF;
+    lot_number[5] = (uid_buf[1] >> 16) & 0x000000FF;
+    lot_number[6] = (uid_buf[1] >> 8) & 0x000000FF;
+    lot_number[7] = '\0';
+    
+    wafer_number = uid_buf[1] & 0x000000FF;
+    
+    x = (uid_buf[0] >> 16) & 0x0000FFFF;
+    y = uid_buf[0] & 0x0000FFFF;
+    
+    // make a string in format "LLLLLL:WWW:XXXXX:YYYYY" - max 23 chars including terminating zero
+    strcpy(str, lot_number);
+    strcat(str, ":");
+    cpu_uid_itoa(wafer_number, buffer, 10);
+    strcat(str, buffer);
+    strcat(str, ":");
+    cpu_uid_itoa(x, buffer, 10);
+    strcat(str, buffer);
+    strcat(str, ":");
+    cpu_uid_itoa(y, buffer, 10);
+    strcat(str, buffer);
+}
+
+int cpu_uid_itoa(int value, char *sp, int radix)
+{
+    char tmp[16];// be careful with the length of the buffer
+    char *tp = tmp;
+    int i;
+    unsigned v = value;
+
+    while (v || tp == tmp) {
+        i = v % radix;
+        v /= radix; // v/=radix uses less CPU clocks than v=v/radix does
+        if (i < 10) {
+          *tp++ = i+'0';
+        }
+        else {
+          *tp++ = i + 'a' - 10;
+        }
+    }
+
+    int len = tp - tmp;
+
+    while (tp > tmp) {
+        *sp++ = *--tp;
+    }
+    *sp = '\0';
+
+    return len;
+}
+
+#endif
+
+#endif
diff --git a/targets/TARGET_Silicon_Labs/TARGET_EFM32/device_uid_api.c b/targets/TARGET_Silicon_Labs/TARGET_EFM32/device_uid_api.c
new file mode 100644
index 0000000000..62eed42c86
--- /dev/null
+++ b/targets/TARGET_Silicon_Labs/TARGET_EFM32/device_uid_api.c
@@ -0,0 +1,42 @@
+/***************************************************************************//**
+ * @file device_uid_api.c
+ *******************************************************************************
+ * @section License
+ * <b>(C) Copyright 2017 Silicon Labs, http://www.silabs.com</b>
+ *******************************************************************************
+ *
+ * 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.
+ *
+ ******************************************************************************/
+
+#include "device.h"
+
+#if DEVICE_DEVICEUID
+
+#include "em_system.h"
+#include "device_uid_api.h"
+
+
+void device_uid_get_uid(uint8_t *uid)
+{
+    int pos = 0;
+    uint64_t tempuid = SYSTEM_GetUnique();
+
+    for (int i = (MBED_DEVICEUID_SIZE - 1); i >= 0; --i) {
+        uid[pos++] = (uint8_t)((tempuid >> (i*8)) & 0xFF);
+    }
+}
+
+#endif
diff --git a/targets/targets.json b/targets/targets.json
index b74bf10c9b..d97a868bf1 100644
--- a/targets/targets.json
+++ b/targets/targets.json
@@ -705,14 +705,14 @@
         "public": false,
         "extra_labels": ["STM"],
         "supported_toolchains": ["ARM", "uARM", "IAR", "GCC_ARM"],
-        "macros": ["TRANSACTION_QUEUE_SIZE_SPI=2"],
+        "macros": ["TRANSACTION_QUEUE_SIZE_SPI=2", "MBED_DEVICEUID_SIZE=12", "MBED_DEVICEUID_STR_SIZE_MAX=23"],
         "config": {
             "lse_available": {
                 "help": "Define if a Low Speed External xtal (LSE) is available on the board (0 = No, 1 = Yes). If Yes, the LSE will be used to clock the RTC, LPUART, ... otherwise the Low Speed Internal clock (LSI) will be used",
                 "value": "1"
             }
         },
-        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES"]
+        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "DEVICEUID"]
     },
     "LPC54114": {
         "supported_form_factors": ["ARDUINO"],
@@ -1891,7 +1891,7 @@
         "inherits": ["FAMILY_STM32"],
         "core": "Cortex-M4F",
         "extra_labels_add": ["STM32F4", "STM32F439", "STM32F439ZI","STM32F439xx", "STM32F439xI"],
-        "macros": ["MBEDTLS_CONFIG_HW_SUPPORT", "HSE_VALUE=24000000", "HSE_STARTUP_TIMEOUT=5000", "CB_INTERFACE_SDIO","CB_CHIP_WL18XX","SUPPORT_80211D_ALWAYS","WLAN_ENABLED","MBEDTLS_ARC4_C","MBEDTLS_DES_C","MBEDTLS_MD4_C","MBEDTLS_MD5_C","MBEDTLS_SHA1_C"],
+        "macros_add": ["MBEDTLS_CONFIG_HW_SUPPORT", "HSE_VALUE=24000000", "HSE_STARTUP_TIMEOUT=5000", "CB_INTERFACE_SDIO","CB_CHIP_WL18XX","SUPPORT_80211D_ALWAYS","WLAN_ENABLED","MBEDTLS_ARC4_C","MBEDTLS_DES_C","MBEDTLS_MD4_C","MBEDTLS_MD5_C","MBEDTLS_SHA1_C"],
         "device_has_add": ["CAN", "EMAC", "TRNG", "FLASH"],
         "device_has_remove": ["RTC", "SLEEP"],
         "features": ["LWIP"],
@@ -2006,7 +2006,7 @@
         "inherits": ["Target"],
         "core": "Cortex-M0",
         "OVERRIDE_BOOTLOADER_FILENAME": "nrf51822_bootloader.hex",
-        "macros": ["NRF51", "TARGET_NRF51822", "CMSIS_VECTAB_VIRTUAL", "CMSIS_VECTAB_VIRTUAL_HEADER_FILE=\"cmsis_nvic.h\""],
+        "macros": ["NRF51", "TARGET_NRF51822", "CMSIS_VECTAB_VIRTUAL", "CMSIS_VECTAB_VIRTUAL_HEADER_FILE=\"cmsis_nvic.h\"", "MBED_DEVICEUID_SIZE=8"],
         "MERGE_BOOTLOADER": false,
         "extra_labels": ["NORDIC", "MCU_NRF51", "MCU_NRF51822"],
         "OUTPUT_EXT": "hex",
@@ -2048,7 +2048,7 @@
         },
         "program_cycle_s": 6,
         "features": ["BLE"],
-        "device_has": ["ANALOGIN", "I2C", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "SERIAL", "SLEEP", "SPI", "SPISLAVE"]
+        "device_has": ["ANALOGIN", "I2C", "INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "SERIAL", "SLEEP", "SPI", "SPISLAVE", "DEVICEUID"]
     },
     "MCU_NRF51_16K_BASE": {
         "inherits": ["MCU_NRF51"],
@@ -2590,7 +2590,7 @@
     "EFM32": {
         "inherits": ["Target"],
         "extra_labels": ["Silicon_Labs", "EFM32"],
-        "macros": ["MBEDTLS_CONFIG_HW_SUPPORT"],
+        "macros": ["MBEDTLS_CONFIG_HW_SUPPORT", "MBED_DEVICEUID_SIZE=8"],
         "public": false
     },
     "EFM32GG990F1024": {
@@ -2607,7 +2607,7 @@
     "EFM32GG_STK3700": {
         "inherits": ["EFM32GG990F1024"],
         "progen": {"target": "efm32gg-stk"},
-        "device_has": ["ANALOGIN", "ANALOGOUT", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "FLASH"],
+        "device_has": ["ANALOGIN", "ANALOGOUT", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "FLASH", "DEVICEUID"],
         "forced_reset_timeout": 2,
         "config": {
             "hf_clock_src": {
@@ -2660,7 +2660,7 @@
     },
     "EFM32LG_STK3600": {
         "inherits": ["EFM32LG990F256"],
-        "device_has": ["ANALOGIN", "ANALOGOUT", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "FLASH"],
+        "device_has": ["ANALOGIN", "ANALOGOUT", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "FLASH", "DEVICEUID"],
         "forced_reset_timeout": 2,
         "device_name": "EFM32LG990F256",
         "config": {
@@ -2715,7 +2715,7 @@
     "EFM32WG_STK3800": {
         "inherits": ["EFM32WG990F256"],
         "progen": {"target": "efm32wg-stk"},
-        "device_has": ["ANALOGIN", "ANALOGOUT", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "FLASH"],
+        "device_has": ["ANALOGIN", "ANALOGOUT", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "FLASH", "DEVICEUID"],
         "forced_reset_timeout": 2,
         "config": {
             "hf_clock_src": {
@@ -2769,7 +2769,7 @@
     },
     "EFM32ZG_STK3200": {
         "inherits": ["EFM32ZG222F32"],
-        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES"],
+        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "DEVICEUID"],
         "forced_reset_timeout": 2,
         "config": {
             "hf_clock_src": {
@@ -2823,7 +2823,7 @@
     },
     "EFM32HG_STK3400": {
         "inherits": ["EFM32HG322F64"],
-        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES"],
+        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "DEVICEUID"],
         "forced_reset_timeout": 2,
         "config": {
             "hf_clock_src": {
@@ -2876,7 +2876,7 @@
     },
     "EFM32PG_STK3401": {
         "inherits": ["EFM32PG1B100F256GM32"],
-        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "FLASH"],
+        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "FLASH", "DEVICEUID"],
         "forced_reset_timeout": 2,
         "config": {
             "hf_clock_src": {
@@ -2939,7 +2939,7 @@
     },
     "EFR32MG1_BRD4150": {
         "inherits": ["EFR32MG1P132F256GM48"],
-        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "FLASH"],
+        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "FLASH", "DEVICEUID"],
         "forced_reset_timeout": 2,
         "config": {
             "hf_clock_src": {
@@ -2982,7 +2982,7 @@
     },
     "TB_SENSE_1": {
         "inherits": ["EFR32MG1P233F256GM48"],
-        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "FLASH"],
+        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "FLASH", "DEVICEUID"],
         "forced_reset_timeout": 5,
         "config": {
             "hf_clock_src": {
@@ -3030,7 +3030,7 @@
     },
     "EFM32PG12_STK3402": {
         "inherits": ["EFM32PG12B500F1024GL125"],
-        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "TRNG", "FLASH"],
+        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "TRNG", "FLASH", "DEVICEUID"],
         "forced_reset_timeout": 2,
         "config": {
             "hf_clock_src": {
@@ -3084,7 +3084,7 @@
     "TB_SENSE_12": {
         "inherits": ["EFR32MG12P332F1024GL125"],
         "device_name": "EFR32MG12P332F1024GL125",
-        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "TRNG", "FLASH"],
+        "device_has": ["ANALOGIN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "TRNG", "FLASH", "DEVICEUID"],
         "forced_reset_timeout": 5,
         "config": {
             "hf_clock_src": {
@@ -3212,7 +3212,8 @@
             "CMSIS_VECTAB_VIRTUAL",
             "CMSIS_VECTAB_VIRTUAL_HEADER_FILE=\"cmsis_nvic.h\"",
             "NO_SYSTICK",
-            "MBED_TICKLESS"
+            "MBED_TICKLESS",
+            "MBED_DEVICEUID_SIZE=8"
         ],
         "MERGE_BOOTLOADER": false,
         "extra_labels": ["NORDIC", "MCU_NRF51", "MCU_NRF51822_UNIFIED", "NRF5", "SDK11"],
@@ -3257,21 +3258,21 @@
     "NRF51_DK": {
         "supported_form_factors": ["ARDUINO"],
         "inherits": ["MCU_NRF51_32K_UNIFIED"],
-        "device_has": ["ANALOGIN", "I2C", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SERIAL_FC", "SLEEP", "SPI", "SPI_ASYNCH", "SPISLAVE"],
+        "device_has": ["ANALOGIN", "I2C", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SERIAL_FC", "SLEEP", "SPI", "SPI_ASYNCH", "SPISLAVE", "DEVICEUID"],
         "release_versions": ["2", "5"],
         "device_name": "nRF51822_xxAA"
     },
     "NRF51_DONGLE": {
         "inherits": ["MCU_NRF51_32K_UNIFIED"],
         "progen": {"target": "nrf51-dongle"},
-        "device_has": ["I2C", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPI_ASYNCH", "SPISLAVE"],
+        "device_has": ["I2C", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPI_ASYNCH", "SPISLAVE", "DEVICEUID"],
         "release_versions": ["2", "5"]
     },
     "MCU_NRF52": {
         "inherits": ["Target"],
         "core": "Cortex-M4F",
-        "macros": ["NRF52", "TARGET_NRF52832", "BLE_STACK_SUPPORT_REQD", "SOFTDEVICE_PRESENT", "S132", "CMSIS_VECTAB_VIRTUAL", "CMSIS_VECTAB_VIRTUAL_HEADER_FILE=\"cmsis_nvic.h\"", "MBED_TICKLESS"],
-        "device_has": ["STCLK_OFF_DURING_SLEEP"],
+        "macros": ["NRF52", "TARGET_NRF52832", "BLE_STACK_SUPPORT_REQD", "SOFTDEVICE_PRESENT", "S132", "CMSIS_VECTAB_VIRTUAL", "CMSIS_VECTAB_VIRTUAL_HEADER_FILE=\"cmsis_nvic.h\"", "MBED_TICKLESS", "MBED_DEVICEUID_SIZE=8"],
+        "device_has": ["STCLK_OFF_DURING_SLEEP", "DEVICEUID"],
         "extra_labels": ["NORDIC", "MCU_NRF52", "MCU_NRF52832", "NRF5", "SDK11", "NRF52_COMMON"],
         "OUTPUT_EXT": "hex",
         "is_disk_virtual": true,
@@ -3351,8 +3352,8 @@
     "MCU_NRF52840": {
         "inherits": ["Target"],
         "core": "Cortex-M4F",
-        "macros": ["TARGET_NRF52840", "BLE_STACK_SUPPORT_REQD", "SOFTDEVICE_PRESENT", "S140", "NRF_SD_BLE_API_VERSION=5", "NRF52840_XXAA", "NRF_DFU_SETTINGS_VERSION=1", "NRF_SD_BLE_API_VERSION=5", "CMSIS_VECTAB_VIRTUAL", "CMSIS_VECTAB_VIRTUAL_HEADER_FILE=\"cmsis_nvic.h\"", "MBED_TICKLESS"],
-        "device_has": ["STCLK_OFF_DURING_SLEEP"],
+        "macros": ["TARGET_NRF52840", "BLE_STACK_SUPPORT_REQD", "SOFTDEVICE_PRESENT", "S140", "NRF_SD_BLE_API_VERSION=5", "NRF52840_XXAA", "NRF_DFU_SETTINGS_VERSION=1", "NRF_SD_BLE_API_VERSION=5", "CMSIS_VECTAB_VIRTUAL", "CMSIS_VECTAB_VIRTUAL_HEADER_FILE=\"cmsis_nvic.h\"", "MBED_TICKLESS", "MBED_DEVICEUID_SIZE=8"],
+        "device_has": ["STCLK_OFF_DURING_SLEEP", "DEVICEUID"],
         "extra_labels": ["NORDIC", "MCU_NRF52840", "NRF5", "SDK13", "NRF52_COMMON"],
         "OUTPUT_EXT": "hex",
         "is_disk_virtual": true,