17q2 l4 bootloader

targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L476xG/TARGET_DISCO_L476VG/system_stm32l4xx.c

@@ -84,6 +84,7 @@
 
 #include "stm32l4xx.h"
 #include "hal_tick.h"
+#include "nvic_addr.h"
 
 #if !defined  (HSE_VALUE)
   #define HSE_VALUE    ((uint32_t)8000000) /*!< Value of the External oscillator in Hz */
@@ -215,7 +216,7 @@ void SystemInit(void)
 #ifdef VECT_TAB_SRAM
   SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */
 #else
-  SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */
+  SCB->VTOR = NVIC_FLASH_VECTOR_ADDRESS; /* Vector Table Relocation in Internal FLASH */
 #endif
 
   /* Configure the Cube driver */

targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L476xG/TARGET_NUCLEO_L476RG/system_stm32l4xx.c

@@ -84,6 +84,7 @@
 
 #include "stm32l4xx.h"
 #include "hal_tick.h"
+#include "nvic_addr.h"
 
 #if !defined  (HSE_VALUE)
   #define HSE_VALUE    ((uint32_t)8000000) /*!< Value of the External oscillator in Hz */
@@ -215,7 +216,7 @@ void SystemInit(void)
 #ifdef VECT_TAB_SRAM
   SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */
 #else
-  SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */
+  SCB->VTOR = NVIC_FLASH_VECTOR_ADDRESS;; /* Vector Table Relocation in Internal FLASH */
 #endif
 
   /* Configure the Cube driver */

targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L476xG/device/TOOLCHAIN_ARM_MICRO/stm32l476xx.sct

@@ -1,3 +1,4 @@
+#! armcc -E
 ; Scatter-Loading Description File
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ; Copyright (c) 2015, STMicroelectronics
@@ -27,10 +28,18 @@
 ; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
+#if !defined(MBED_APP_START)
+  #define MBED_APP_START 0x08000000
+#endif
+
+#if !defined(MBED_APP_SIZE)
+  #define MBED_APP_SIZE 0x200000
+#endif
+
 ; 1MB FLASH (0x100000) + 128KB SRAM (0x20000)
-LR_IROM1 0x08000000 0x100000  {    ; load region size_region
+LR_IROM1 MBED_APP_START MBED_APP_SIZE  {    ; load region size_region
 
-  ER_IROM1 0x08000000 0x100000  {  ; load address = execution address
+  ER_IROM1 MBED_APP_START MBED_APP_SIZE  {  ; load address = execution address
    *.o (RESET, +First)
    *(InRoot$$Sections)
    .ANY (+RO)

targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L476xG/device/TOOLCHAIN_ARM_STD/stm32l476xx.sct

@@ -1,3 +1,4 @@
+#! armcc -E
 ; Scatter-Loading Description File
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ; Copyright (c) 2015, STMicroelectronics
@@ -27,10 +28,18 @@
 ; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
+#if !defined(MBED_APP_START)
+  #define MBED_APP_START 0x08000000
+#endif
+
+#if !defined(MBED_APP_SIZE)
+  #define MBED_APP_SIZE 0x200000
+#endif
+
 ; 1MB FLASH (0x100000) + 128KB SRAM (0x20000)
-LR_IROM1 0x08000000 0x100000  {    ; load region size_region
+LR_IROM1 MBED_APP_START MBED_APP_SIZE  {    ; load region size_region
 
-  ER_IROM1 0x08000000 0x100000  {  ; load address = execution address
+  ER_IROM1 MBED_APP_START MBED_APP_SIZE  {  ; load address = execution address
    *.o (RESET, +First)
    *(InRoot$$Sections)
    .ANY (+RO)

targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L476xG/device/TOOLCHAIN_GCC_ARM/STM32L476XX.ld

@@ -1,7 +1,16 @@
+#if !defined(MBED_APP_START)
+  #define MBED_APP_START 0x08000000
+#endif
+
+#if !defined(MBED_APP_SIZE)
+  #define MBED_APP_SIZE 2048k
+#endif
+
 /* Linker script to configure memory regions. */
 MEMORY
 { 
-  FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 1024K
+  VECTORS (rx) : ORIGIN = MBED_APP_START, LENGTH = 0x400
+  FLASH (rx)   : ORIGIN = MBED_APP_START + 0x400, LENGTH = MBED_APP_SIZE - 0x400
   SRAM2 (rwx)  : ORIGIN = 0x10000188, LENGTH = 32k - 0x188
   SRAM1 (rwx)  : ORIGIN = 0x20000000, LENGTH = 96k
 }

targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L476xG/device/TOOLCHAIN_IAR/stm32l476xx.icf

@@ -1,7 +1,10 @@
+if (!isdefinedsymbol(MBED_APP_START)) { define symbol MBED_APP_START = 0x08000000; }
+if (!isdefinedsymbol(MBED_APP_SIZE)) { define symbol MBED_APP_SIZE = 0x200000; }
+
 /* [ROM = 1024kb = 0x100000] */
-define symbol __intvec_start__     = 0x08000000;
-define symbol __region_ROM_start__ = 0x08000000;
-define symbol __region_ROM_end__   = 0x080FFFFF;
+define symbol __intvec_start__     = MBED_APP_START;
+define symbol __region_ROM_start__ = MBED_APP_START;
+define symbol __region_ROM_end__   = MBED_APP_START + MBED_APP_SIZE - 1;
 
 /* [RAM = 96kb + 32kb = 0x20000] */
 /* Vector table dynamic copy: Total: 98 vectors = 392 bytes (0x188) to be reserved in RAM */

targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L476xG/device/cmsis_nvic.c

@@ -29,9 +29,9 @@
  *******************************************************************************
  */ 
 #include "cmsis_nvic.h"
+#include "nvic_addr.h"
 
 #define NVIC_RAM_VECTOR_ADDRESS   (0x10000000)  // Vectors positioned at start of SRAM2
-#define NVIC_FLASH_VECTOR_ADDRESS (0x08000000)  // Initial vector position in flash
 
 void NVIC_SetVector(IRQn_Type IRQn, uint32_t vector) {
     uint32_t *vectors = (uint32_t *)SCB->VTOR;

targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L476xG/device/nvic_addr.h

@@ -0,0 +1,40 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017-2017 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 NVIC_ADDR_H
+#define NVIC_ADDR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if defined(__ICCARM__)
+    #pragma section=".intvec"
+    #define NVIC_FLASH_VECTOR_ADDRESS   ((uint32_t)__section_begin(".intvec"))
+#elif defined(__CC_ARM)
+    extern uint32_t Load$$LR$$LR_IROM1$$Base[];
+    #define NVIC_FLASH_VECTOR_ADDRESS   ((uint32_t)Load$$LR$$LR_IROM1$$Base)
+#elif defined(__GNUC__)
+    extern uint32_t g_pfnVectors[];
+    #define NVIC_FLASH_VECTOR_ADDRESS   ((uint32_t)g_pfnVectors)
+#else
+    #error "Flash vector address not set for this toolchain"
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

targets/targets.json

@@ -1077,7 +1077,8 @@
         "macros": ["TRANSACTION_QUEUE_SIZE_SPI=2","USBHOST_OTHER"],
         "device_has": ["ANALOGIN", "ANALOGOUT", "CAN", "I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SERIAL_FC", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH", "STDIO_MESSAGES", "TRNG"],
         "release_versions": ["2", "5"],
-        "device_name": "STM32L476RG"
+        "device_name": "STM32L476RG",
+        "bootloader_supported": true
     },
     "NUCLEO_L486RG": {
         "supported_form_factors": ["ARDUINO", "MORPHO"],