diff --git a/targets/TARGET_STM/TARGET_STM32G4/STM32Cube_FW/stm32g4xx_hal_conf.h b/targets/TARGET_STM/TARGET_STM32G4/STM32Cube_FW/stm32g4xx_hal_conf.h
index e518391855..fbb3582f64 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/STM32Cube_FW/stm32g4xx_hal_conf.h
+++ b/targets/TARGET_STM/TARGET_STM32G4/STM32Cube_FW/stm32g4xx_hal_conf.h
@@ -357,17 +357,7 @@ The real value may vary depending on the variations in voltage and temperature.*
/* Exported macro ------------------------------------------------------------*/
#ifdef USE_FULL_ASSERT
-/**
- * @brief The assert_param macro is used for function's parameters check.
- * @param expr: If expr is false, it calls assert_failed function
- * which reports the name of the source file and the source
- * line number of the call that failed.
- * If expr is true, it returns no value.
- * @retval None
- */
-#define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
-/* Exported functions ------------------------------------------------------- */
-void assert_failed(uint8_t *file, uint32_t line);
+#include "stm32_assert.h" // MBED patch
#else
#define assert_param(expr) ((void)0U)
#endif /* USE_FULL_ASSERT */
diff --git a/targets/TARGET_STM/TARGET_STM32G4/STM32Cube_FW/system_stm32g4xx.c b/targets/TARGET_STM/TARGET_STM32G4/STM32Cube_FW/system_stm32g4xx.c
index 9aec032f83..8293d3e920 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/STM32Cube_FW/system_stm32g4xx.c
+++ b/targets/TARGET_STM/TARGET_STM32G4/STM32Cube_FW/system_stm32g4xx.c
@@ -170,7 +170,8 @@ 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 */
+#include "nvic_addr.h" // MBED
+ SCB->VTOR = NVIC_FLASH_VECTOR_ADDRESS; // MBED
#endif
}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_ARM_STD/startup_stm32g431xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_ARM_STD/startup_stm32g431xx.S
index 1da1cf9499..960f0d8bf6 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_ARM_STD/startup_stm32g431xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_ARM_STD/startup_stm32g431xx.S
@@ -27,30 +27,6 @@
;*******************************************************************************
;* <<< Use Configuration Wizard in Context Menu >>>
;
-; Amount of memory (in bytes) allocated for Stack
-; Tailor this value to your application needs
-; Stack Configuration
-; Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Stack_Size EQU 0x400;
-
- AREA STACK, NOINIT, READWRITE, ALIGN=3
-Stack_Mem SPACE Stack_Size
-__initial_sp
-
-
-; Heap Configuration
-; Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Heap_Size EQU 0x200;
-
- AREA HEAP, NOINIT, READWRITE, ALIGN=3
-__heap_base
-Heap_Mem SPACE Heap_Size
-__heap_limit
-
PRESERVE8
THUMB
@@ -61,7 +37,8 @@ __heap_limit
EXPORT __Vectors_End
EXPORT __Vectors_Size
-__Vectors DCD __initial_sp ; Top of Stack
+ IMPORT |Image$$ARM_LIB_STACK$$ZI$$Limit|
+__Vectors DCD |Image$$ARM_LIB_STACK$$ZI$$Limit| ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
@@ -397,28 +374,6 @@ FMAC_IRQHandler
;*******************************************************************************
; User Stack and Heap initialization
;*******************************************************************************
- IF :DEF:__MICROLIB
-
- EXPORT __initial_sp
- EXPORT __heap_base
- EXPORT __heap_limit
-
- ELSE
-
- IMPORT __use_two_region_memory
- EXPORT __user_initial_stackheap
-
-__user_initial_stackheap
-
- LDR R0, = Heap_Mem
- LDR R1, =(Stack_Mem + Stack_Size)
- LDR R2, = (Heap_Mem + Heap_Size)
- LDR R3, = Stack_Mem
- BX LR
-
- ALIGN
-
- ENDIF
END
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_ARM_STD/stm32g431xx.sct b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_ARM_STD/stm32g431xx.sct
new file mode 100644
index 0000000000..50f930c713
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_ARM_STD/stm32g431xx.sct
@@ -0,0 +1,53 @@
+#! armcc -E
+; Scatter-Loading Description File
+;
+; SPDX-License-Identifier: BSD-3-Clause
+;******************************************************************************
+;* @attention
+;*
+;* Copyright (c) 2016-2020 STMicroelectronics.
+;* All rights reserved.
+;*
+;* This software component is licensed by ST under BSD 3-Clause license,
+;* the "License"; You may not use this file except in compliance with the
+;* License. You may obtain a copy of the License at:
+;* opensource.org/licenses/BSD-3-Clause
+;*
+;******************************************************************************
+
+#include "../cmsis_nvic.h"
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+/* This value is normally defined by the tools to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) AND ~7)
+
+LR_IROM1 MBED_APP_START MBED_APP_SIZE {
+
+ ER_IROM1 MBED_APP_START MBED_APP_SIZE {
+ *.o (RESET, +First)
+ *(InRoot$$Sections)
+ .ANY (+RO)
+ }
+
+ RW_IRAM1 (MBED_RAM_START + VECTORS_SIZE) { ; RW data
+ .ANY (+RW +ZI)
+ }
+
+ ARM_LIB_HEAP AlignExpr(+0, 16) EMPTY (MBED_RAM_START + MBED_RAM_SIZE - MBED_BOOT_STACK_SIZE - AlignExpr(ImageLimit(RW_IRAM1), 16)) { ; Heap growing up
+ }
+
+ ARM_LIB_STACK (MBED_RAM_START + MBED_RAM_SIZE) EMPTY -MBED_BOOT_STACK_SIZE { ; Stack region growing down
+ }
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_GCC_ARM/startup_stm32g431xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_GCC_ARM/startup_stm32g431xx.S
index be5cc3fc22..18b3945c3e 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_GCC_ARM/startup_stm32g431xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_GCC_ARM/startup_stm32g431xx.S
@@ -96,10 +96,8 @@ LoopFillZerobss:
/* Call the clock system intitialization function.*/
bl SystemInit
-/* Call static constructors */
- bl __libc_init_array
-/* Call the application's entry point.*/
- bl main
+ bl _start
+ bx lr
LoopForever:
b LoopForever
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_GCC_ARM/stm32g431xx.ld b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_GCC_ARM/stm32g431xx.ld
new file mode 100644
index 0000000000..fd05c82aaf
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_GCC_ARM/stm32g431xx.ld
@@ -0,0 +1,206 @@
+/* Linker script to configure memory regions. */
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#include "../cmsis_nvic.h"
+
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) & 0xFFFFFFF8)
+
+MEMORY
+{
+ FLASH (rx) : ORIGIN = MBED_APP_START, LENGTH = MBED_APP_SIZE
+ RAM (rwx) : ORIGIN = MBED_RAM_START + VECTORS_SIZE, LENGTH = MBED_RAM_SIZE - VECTORS_SIZE
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ * Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ * __exidx_start
+ * __exidx_end
+ * __etext
+ * __data_start__
+ * __preinit_array_start
+ * __preinit_array_end
+ * __init_array_start
+ * __init_array_end
+ * __fini_array_start
+ * __fini_array_end
+ * __data_end__
+ * __bss_start__
+ * __bss_end__
+ * __end__
+ * end
+ * __HeapLimit
+ * __StackLimit
+ * __StackTop
+ * __stack
+ * _estack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+ .text :
+ {
+ KEEP(*(.isr_vector))
+ *(.text*)
+
+ KEEP(*(.init))
+ KEEP(*(.fini))
+
+ /* .ctors */
+ *crtbegin.o(.ctors)
+ *crtbegin?.o(.ctors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+ *(SORT(.ctors.*))
+ *(.ctors)
+
+ /* .dtors */
+ *crtbegin.o(.dtors)
+ *crtbegin?.o(.dtors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ *(SORT(.dtors.*))
+ *(.dtors)
+
+ *(.rodata*)
+
+ KEEP(*(.eh_frame*))
+ } > FLASH
+
+ .ARM.extab :
+ {
+ *(.ARM.extab* .gnu.linkonce.armextab.*)
+ } > FLASH
+
+ __exidx_start = .;
+ .ARM.exidx :
+ {
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ } > FLASH
+ __exidx_end = .;
+
+ /* Location counter can end up 2byte aligned with narrow Thumb code but
+ __etext is assumed by startup code to be the LMA of a section in RAM
+ which must be 8-byte aligned */
+ __etext = ALIGN (8);
+ _sidata = .;
+
+ .data : AT (__etext)
+ {
+ __data_start__ = .;
+ _sdata = .;
+ *(vtable)
+ *(.data*)
+
+ . = ALIGN(8);
+ /* preinit data */
+ PROVIDE_HIDDEN (__preinit_array_start = .);
+ KEEP(*(.preinit_array))
+ PROVIDE_HIDDEN (__preinit_array_end = .);
+
+ . = ALIGN(8);
+ /* init data */
+ PROVIDE_HIDDEN (__init_array_start = .);
+ KEEP(*(SORT(.init_array.*)))
+ KEEP(*(.init_array))
+ PROVIDE_HIDDEN (__init_array_end = .);
+
+ . = ALIGN(8);
+ /* finit data */
+ PROVIDE_HIDDEN (__fini_array_start = .);
+ KEEP(*(SORT(.fini_array.*)))
+ KEEP(*(.fini_array))
+ PROVIDE_HIDDEN (__fini_array_end = .);
+
+ KEEP(*(.jcr*))
+ . = ALIGN(8);
+ /* All data end */
+ __data_end__ = .;
+ _edata = .;
+
+ } > RAM
+
+ /* Uninitialized data section
+ * This region is not initialized by the C/C++ library and can be used to
+ * store state across soft reboots. */
+ .uninitialized (NOLOAD):
+ {
+ . = ALIGN(32);
+ __uninitialized_start = .;
+ *(.uninitialized)
+ KEEP(*(.keep.uninitialized))
+ . = ALIGN(32);
+ __uninitialized_end = .;
+ } > RAM
+
+ .bss :
+ {
+ . = ALIGN(8);
+ __bss_start__ = .;
+ _sbss = .;
+ *(.bss*)
+ *(COMMON)
+ . = ALIGN(8);
+ __bss_end__ = .;
+ _ebss = .;
+ } > RAM
+
+ .heap (COPY):
+ {
+ __end__ = .;
+ PROVIDE(end = .);
+ *(.heap*)
+ . = ORIGIN(RAM) + LENGTH(RAM) - MBED_BOOT_STACK_SIZE;
+ __HeapLimit = .;
+ } > RAM
+
+ /* .stack_dummy section doesn't contains any symbols. It is only
+ * used for linker to calculate size of stack sections, and assign
+ * values to stack symbols later */
+ .stack_dummy (COPY):
+ {
+ *(.stack*)
+ } > RAM
+
+ /* Set stack top to end of RAM, and stack limit move down by
+ * size of stack_dummy section */
+ __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+ _estack = __StackTop;
+ __StackLimit = __StackTop - MBED_BOOT_STACK_SIZE;
+ PROVIDE(__stack = __StackTop);
+
+ /* Check if data + heap + stack exceeds RAM limit */
+ ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_IAR/stm32g431xx.icf b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_IAR/stm32g431xx.icf
new file mode 100644
index 0000000000..d384a69af5
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/TOOLCHAIN_IAR/stm32g431xx.icf
@@ -0,0 +1,59 @@
+/* Linker script to configure memory regions.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+/* Device specific values */
+
+/* Tools provide -DMBED_ROM_START=xxx -DMBED_ROM_SIZE=xxx -DMBED_RAM_START=xxx -DMBED_RAM_SIZE=xxx */
+
+define symbol VECTORS = 118; /* This value must match NVIC_NUM_VECTORS in cmsis_nvic.h */
+define symbol HEAP_SIZE = 0x2000;
+
+/* Common - Do not change */
+
+if (!isdefinedsymbol(MBED_APP_START)) {
+ define symbol MBED_APP_START = MBED_ROM_START;
+}
+
+if (!isdefinedsymbol(MBED_APP_SIZE)) {
+ define symbol MBED_APP_SIZE = MBED_ROM_SIZE;
+}
+
+if (!isdefinedsymbol(MBED_BOOT_STACK_SIZE)) {
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ define symbol MBED_BOOT_STACK_SIZE = 0x400;
+}
+
+/* Round up VECTORS_SIZE to 8 bytes */
+define symbol VECTORS_SIZE = ((VECTORS * 4) + 7) & ~7;
+define symbol RAM_REGION_START = MBED_RAM_START + VECTORS_SIZE;
+define symbol RAM_REGION_SIZE = MBED_RAM_SIZE - VECTORS_SIZE;
+
+define memory mem with size = 4G;
+define region ROM_region = mem:[from MBED_APP_START size MBED_APP_SIZE];
+define region RAM_region = mem:[from RAM_REGION_START size RAM_REGION_SIZE];
+
+define block CSTACK with alignment = 8, size = MBED_BOOT_STACK_SIZE { };
+define block HEAP with alignment = 8, size = HEAP_SIZE { };
+
+initialize by copy { readwrite };
+do not initialize { section .noinit };
+
+place at address mem: MBED_APP_START { readonly section .intvec };
+
+place in ROM_region { readonly };
+place in RAM_region { readwrite,
+ block CSTACK, block HEAP };
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/cmsis_nvic.h b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/cmsis_nvic.h
new file mode 100644
index 0000000000..672abbeffb
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G431xx/cmsis_nvic.h
@@ -0,0 +1,43 @@
+/* mbed Microcontroller Library
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#ifndef MBED_CMSIS_NVIC_H
+#define MBED_CMSIS_NVIC_H
+
+#if !defined(MBED_ROM_START)
+#define MBED_ROM_START 0x8000000
+#endif
+
+#if !defined(MBED_ROM_SIZE)
+#define MBED_ROM_SIZE 0x20000 // 128 KB
+ // 0x8000 STM32G431M6Tx STM32G431K6Tx STM32G431C6Ux STM32G431R6Tx STM32G431V6Tx STM32G431K6Ux STM32G431C6Tx STM32G431R6Ix
+ // 0x20000 STM32G431KBTx STM32G431CBTx STM32G431RBIx STM32G431CBYx STM32G431KBUx STM32G431VBTx STM32G431CBUx STM32G431RBTx
+ // 0x10000 STM32G431V8Tx STM32G431R8Tx STM32G431K8Tx STM32G431C8Tx STM32G431R8Ix STM32G431C8Ux STM32G431K8Ux STM32G431M8Tx
+#warning "check MBED_ROM_SIZE value in cmsis_nvic.h"
+#endif
+
+#if !defined(MBED_RAM_START)
+#define MBED_RAM_START 0x20000000
+#endif
+
+#if !defined(MBED_RAM_SIZE)
+#define MBED_RAM_SIZE 0x8000 // 32 KB
+#endif
+
+#define NVIC_NUM_VECTORS 118
+#define NVIC_RAM_VECTOR_ADDRESS MBED_RAM_START
+
+#endif
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_ARM_STD/startup_stm32g441xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_ARM_STD/startup_stm32g441xx.S
index 40a4c8852e..86f76d5637 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_ARM_STD/startup_stm32g441xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_ARM_STD/startup_stm32g441xx.S
@@ -27,30 +27,6 @@
;*******************************************************************************
;* <<< Use Configuration Wizard in Context Menu >>>
;
-; Amount of memory (in bytes) allocated for Stack
-; Tailor this value to your application needs
-; Stack Configuration
-; Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Stack_Size EQU 0x400;
-
- AREA STACK, NOINIT, READWRITE, ALIGN=3
-Stack_Mem SPACE Stack_Size
-__initial_sp
-
-
-; Heap Configuration
-; Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Heap_Size EQU 0x200;
-
- AREA HEAP, NOINIT, READWRITE, ALIGN=3
-__heap_base
-Heap_Mem SPACE Heap_Size
-__heap_limit
-
PRESERVE8
THUMB
@@ -61,7 +37,8 @@ __heap_limit
EXPORT __Vectors_End
EXPORT __Vectors_Size
-__Vectors DCD __initial_sp ; Top of Stack
+ IMPORT |Image$$ARM_LIB_STACK$$ZI$$Limit|
+__Vectors DCD |Image$$ARM_LIB_STACK$$ZI$$Limit| ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
@@ -399,28 +376,6 @@ FMAC_IRQHandler
;*******************************************************************************
; User Stack and Heap initialization
;*******************************************************************************
- IF :DEF:__MICROLIB
-
- EXPORT __initial_sp
- EXPORT __heap_base
- EXPORT __heap_limit
-
- ELSE
-
- IMPORT __use_two_region_memory
- EXPORT __user_initial_stackheap
-
-__user_initial_stackheap
-
- LDR R0, = Heap_Mem
- LDR R1, =(Stack_Mem + Stack_Size)
- LDR R2, = (Heap_Mem + Heap_Size)
- LDR R3, = Stack_Mem
- BX LR
-
- ALIGN
-
- ENDIF
END
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_ARM_STD/stm32g441xx.sct b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_ARM_STD/stm32g441xx.sct
new file mode 100644
index 0000000000..50f930c713
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_ARM_STD/stm32g441xx.sct
@@ -0,0 +1,53 @@
+#! armcc -E
+; Scatter-Loading Description File
+;
+; SPDX-License-Identifier: BSD-3-Clause
+;******************************************************************************
+;* @attention
+;*
+;* Copyright (c) 2016-2020 STMicroelectronics.
+;* All rights reserved.
+;*
+;* This software component is licensed by ST under BSD 3-Clause license,
+;* the "License"; You may not use this file except in compliance with the
+;* License. You may obtain a copy of the License at:
+;* opensource.org/licenses/BSD-3-Clause
+;*
+;******************************************************************************
+
+#include "../cmsis_nvic.h"
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+/* This value is normally defined by the tools to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) AND ~7)
+
+LR_IROM1 MBED_APP_START MBED_APP_SIZE {
+
+ ER_IROM1 MBED_APP_START MBED_APP_SIZE {
+ *.o (RESET, +First)
+ *(InRoot$$Sections)
+ .ANY (+RO)
+ }
+
+ RW_IRAM1 (MBED_RAM_START + VECTORS_SIZE) { ; RW data
+ .ANY (+RW +ZI)
+ }
+
+ ARM_LIB_HEAP AlignExpr(+0, 16) EMPTY (MBED_RAM_START + MBED_RAM_SIZE - MBED_BOOT_STACK_SIZE - AlignExpr(ImageLimit(RW_IRAM1), 16)) { ; Heap growing up
+ }
+
+ ARM_LIB_STACK (MBED_RAM_START + MBED_RAM_SIZE) EMPTY -MBED_BOOT_STACK_SIZE { ; Stack region growing down
+ }
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_GCC_ARM/startup_stm32g441xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_GCC_ARM/startup_stm32g441xx.S
index dc621f9ad9..4ec3534b67 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_GCC_ARM/startup_stm32g441xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_GCC_ARM/startup_stm32g441xx.S
@@ -96,10 +96,8 @@ LoopFillZerobss:
/* Call the clock system intitialization function.*/
bl SystemInit
-/* Call static constructors */
- bl __libc_init_array
-/* Call the application's entry point.*/
- bl main
+ bl _start
+ bx lr
LoopForever:
b LoopForever
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_GCC_ARM/stm32g441xx.ld b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_GCC_ARM/stm32g441xx.ld
new file mode 100644
index 0000000000..fd05c82aaf
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_GCC_ARM/stm32g441xx.ld
@@ -0,0 +1,206 @@
+/* Linker script to configure memory regions. */
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#include "../cmsis_nvic.h"
+
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) & 0xFFFFFFF8)
+
+MEMORY
+{
+ FLASH (rx) : ORIGIN = MBED_APP_START, LENGTH = MBED_APP_SIZE
+ RAM (rwx) : ORIGIN = MBED_RAM_START + VECTORS_SIZE, LENGTH = MBED_RAM_SIZE - VECTORS_SIZE
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ * Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ * __exidx_start
+ * __exidx_end
+ * __etext
+ * __data_start__
+ * __preinit_array_start
+ * __preinit_array_end
+ * __init_array_start
+ * __init_array_end
+ * __fini_array_start
+ * __fini_array_end
+ * __data_end__
+ * __bss_start__
+ * __bss_end__
+ * __end__
+ * end
+ * __HeapLimit
+ * __StackLimit
+ * __StackTop
+ * __stack
+ * _estack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+ .text :
+ {
+ KEEP(*(.isr_vector))
+ *(.text*)
+
+ KEEP(*(.init))
+ KEEP(*(.fini))
+
+ /* .ctors */
+ *crtbegin.o(.ctors)
+ *crtbegin?.o(.ctors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+ *(SORT(.ctors.*))
+ *(.ctors)
+
+ /* .dtors */
+ *crtbegin.o(.dtors)
+ *crtbegin?.o(.dtors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ *(SORT(.dtors.*))
+ *(.dtors)
+
+ *(.rodata*)
+
+ KEEP(*(.eh_frame*))
+ } > FLASH
+
+ .ARM.extab :
+ {
+ *(.ARM.extab* .gnu.linkonce.armextab.*)
+ } > FLASH
+
+ __exidx_start = .;
+ .ARM.exidx :
+ {
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ } > FLASH
+ __exidx_end = .;
+
+ /* Location counter can end up 2byte aligned with narrow Thumb code but
+ __etext is assumed by startup code to be the LMA of a section in RAM
+ which must be 8-byte aligned */
+ __etext = ALIGN (8);
+ _sidata = .;
+
+ .data : AT (__etext)
+ {
+ __data_start__ = .;
+ _sdata = .;
+ *(vtable)
+ *(.data*)
+
+ . = ALIGN(8);
+ /* preinit data */
+ PROVIDE_HIDDEN (__preinit_array_start = .);
+ KEEP(*(.preinit_array))
+ PROVIDE_HIDDEN (__preinit_array_end = .);
+
+ . = ALIGN(8);
+ /* init data */
+ PROVIDE_HIDDEN (__init_array_start = .);
+ KEEP(*(SORT(.init_array.*)))
+ KEEP(*(.init_array))
+ PROVIDE_HIDDEN (__init_array_end = .);
+
+ . = ALIGN(8);
+ /* finit data */
+ PROVIDE_HIDDEN (__fini_array_start = .);
+ KEEP(*(SORT(.fini_array.*)))
+ KEEP(*(.fini_array))
+ PROVIDE_HIDDEN (__fini_array_end = .);
+
+ KEEP(*(.jcr*))
+ . = ALIGN(8);
+ /* All data end */
+ __data_end__ = .;
+ _edata = .;
+
+ } > RAM
+
+ /* Uninitialized data section
+ * This region is not initialized by the C/C++ library and can be used to
+ * store state across soft reboots. */
+ .uninitialized (NOLOAD):
+ {
+ . = ALIGN(32);
+ __uninitialized_start = .;
+ *(.uninitialized)
+ KEEP(*(.keep.uninitialized))
+ . = ALIGN(32);
+ __uninitialized_end = .;
+ } > RAM
+
+ .bss :
+ {
+ . = ALIGN(8);
+ __bss_start__ = .;
+ _sbss = .;
+ *(.bss*)
+ *(COMMON)
+ . = ALIGN(8);
+ __bss_end__ = .;
+ _ebss = .;
+ } > RAM
+
+ .heap (COPY):
+ {
+ __end__ = .;
+ PROVIDE(end = .);
+ *(.heap*)
+ . = ORIGIN(RAM) + LENGTH(RAM) - MBED_BOOT_STACK_SIZE;
+ __HeapLimit = .;
+ } > RAM
+
+ /* .stack_dummy section doesn't contains any symbols. It is only
+ * used for linker to calculate size of stack sections, and assign
+ * values to stack symbols later */
+ .stack_dummy (COPY):
+ {
+ *(.stack*)
+ } > RAM
+
+ /* Set stack top to end of RAM, and stack limit move down by
+ * size of stack_dummy section */
+ __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+ _estack = __StackTop;
+ __StackLimit = __StackTop - MBED_BOOT_STACK_SIZE;
+ PROVIDE(__stack = __StackTop);
+
+ /* Check if data + heap + stack exceeds RAM limit */
+ ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_IAR/stm32g441xx.icf b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_IAR/stm32g441xx.icf
new file mode 100644
index 0000000000..d384a69af5
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/TOOLCHAIN_IAR/stm32g441xx.icf
@@ -0,0 +1,59 @@
+/* Linker script to configure memory regions.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+/* Device specific values */
+
+/* Tools provide -DMBED_ROM_START=xxx -DMBED_ROM_SIZE=xxx -DMBED_RAM_START=xxx -DMBED_RAM_SIZE=xxx */
+
+define symbol VECTORS = 118; /* This value must match NVIC_NUM_VECTORS in cmsis_nvic.h */
+define symbol HEAP_SIZE = 0x2000;
+
+/* Common - Do not change */
+
+if (!isdefinedsymbol(MBED_APP_START)) {
+ define symbol MBED_APP_START = MBED_ROM_START;
+}
+
+if (!isdefinedsymbol(MBED_APP_SIZE)) {
+ define symbol MBED_APP_SIZE = MBED_ROM_SIZE;
+}
+
+if (!isdefinedsymbol(MBED_BOOT_STACK_SIZE)) {
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ define symbol MBED_BOOT_STACK_SIZE = 0x400;
+}
+
+/* Round up VECTORS_SIZE to 8 bytes */
+define symbol VECTORS_SIZE = ((VECTORS * 4) + 7) & ~7;
+define symbol RAM_REGION_START = MBED_RAM_START + VECTORS_SIZE;
+define symbol RAM_REGION_SIZE = MBED_RAM_SIZE - VECTORS_SIZE;
+
+define memory mem with size = 4G;
+define region ROM_region = mem:[from MBED_APP_START size MBED_APP_SIZE];
+define region RAM_region = mem:[from RAM_REGION_START size RAM_REGION_SIZE];
+
+define block CSTACK with alignment = 8, size = MBED_BOOT_STACK_SIZE { };
+define block HEAP with alignment = 8, size = HEAP_SIZE { };
+
+initialize by copy { readwrite };
+do not initialize { section .noinit };
+
+place at address mem: MBED_APP_START { readonly section .intvec };
+
+place in ROM_region { readonly };
+place in RAM_region { readwrite,
+ block CSTACK, block HEAP };
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/cmsis_nvic.h b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/cmsis_nvic.h
new file mode 100644
index 0000000000..308d0de2f2
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G441xx/cmsis_nvic.h
@@ -0,0 +1,39 @@
+/* mbed Microcontroller Library
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#ifndef MBED_CMSIS_NVIC_H
+#define MBED_CMSIS_NVIC_H
+
+#if !defined(MBED_ROM_START)
+#define MBED_ROM_START 0x8000000
+#endif
+
+#if !defined(MBED_ROM_SIZE)
+#define MBED_ROM_SIZE 0x20000 // 128 KB
+#endif
+
+#if !defined(MBED_RAM_START)
+#define MBED_RAM_START 0x20000000
+#endif
+
+#if !defined(MBED_RAM_SIZE)
+#define MBED_RAM_SIZE 0x8000 // 32 KB
+#endif
+
+#define NVIC_NUM_VECTORS 118
+#define NVIC_RAM_VECTOR_ADDRESS MBED_RAM_START
+
+#endif
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_ARM_STD/startup_stm32g471xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_ARM_STD/startup_stm32g471xx.S
index 99faf6c196..7ba41822d3 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_ARM_STD/startup_stm32g471xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_ARM_STD/startup_stm32g471xx.S
@@ -28,30 +28,6 @@
;*******************************************************************************
;* <<< Use Configuration Wizard in Context Menu >>>
;
-; Amount of memory (in bytes) allocated for Stack
-; Tailor this value to your application needs
-; Stack Configuration
-; Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Stack_Size EQU 0x400;
-
- AREA STACK, NOINIT, READWRITE, ALIGN=3
-Stack_Mem SPACE Stack_Size
-__initial_sp
-
-
-; Heap Configuration
-; Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Heap_Size EQU 0x200;
-
- AREA HEAP, NOINIT, READWRITE, ALIGN=3
-__heap_base
-Heap_Mem SPACE Heap_Size
-__heap_limit
-
PRESERVE8
THUMB
@@ -62,7 +38,8 @@ __heap_limit
EXPORT __Vectors_End
EXPORT __Vectors_Size
-__Vectors DCD __initial_sp ; Top of Stack
+ IMPORT |Image$$ARM_LIB_STACK$$ZI$$Limit|
+__Vectors DCD |Image$$ARM_LIB_STACK$$ZI$$Limit| ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
@@ -416,28 +393,6 @@ FMAC_IRQHandler
;*******************************************************************************
; User Stack and Heap initialization
;*******************************************************************************
- IF :DEF:__MICROLIB
-
- EXPORT __initial_sp
- EXPORT __heap_base
- EXPORT __heap_limit
-
- ELSE
-
- IMPORT __use_two_region_memory
- EXPORT __user_initial_stackheap
-
-__user_initial_stackheap
-
- LDR R0, = Heap_Mem
- LDR R1, =(Stack_Mem + Stack_Size)
- LDR R2, = (Heap_Mem + Heap_Size)
- LDR R3, = Stack_Mem
- BX LR
-
- ALIGN
-
- ENDIF
END
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_ARM_STD/stm32g471xx.sct b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_ARM_STD/stm32g471xx.sct
new file mode 100644
index 0000000000..50f930c713
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_ARM_STD/stm32g471xx.sct
@@ -0,0 +1,53 @@
+#! armcc -E
+; Scatter-Loading Description File
+;
+; SPDX-License-Identifier: BSD-3-Clause
+;******************************************************************************
+;* @attention
+;*
+;* Copyright (c) 2016-2020 STMicroelectronics.
+;* All rights reserved.
+;*
+;* This software component is licensed by ST under BSD 3-Clause license,
+;* the "License"; You may not use this file except in compliance with the
+;* License. You may obtain a copy of the License at:
+;* opensource.org/licenses/BSD-3-Clause
+;*
+;******************************************************************************
+
+#include "../cmsis_nvic.h"
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+/* This value is normally defined by the tools to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) AND ~7)
+
+LR_IROM1 MBED_APP_START MBED_APP_SIZE {
+
+ ER_IROM1 MBED_APP_START MBED_APP_SIZE {
+ *.o (RESET, +First)
+ *(InRoot$$Sections)
+ .ANY (+RO)
+ }
+
+ RW_IRAM1 (MBED_RAM_START + VECTORS_SIZE) { ; RW data
+ .ANY (+RW +ZI)
+ }
+
+ ARM_LIB_HEAP AlignExpr(+0, 16) EMPTY (MBED_RAM_START + MBED_RAM_SIZE - MBED_BOOT_STACK_SIZE - AlignExpr(ImageLimit(RW_IRAM1), 16)) { ; Heap growing up
+ }
+
+ ARM_LIB_STACK (MBED_RAM_START + MBED_RAM_SIZE) EMPTY -MBED_BOOT_STACK_SIZE { ; Stack region growing down
+ }
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_GCC_ARM/startup_stm32g471xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_GCC_ARM/startup_stm32g471xx.S
index 918ebee877..dbc0c02a79 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_GCC_ARM/startup_stm32g471xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_GCC_ARM/startup_stm32g471xx.S
@@ -96,10 +96,8 @@ LoopFillZerobss:
/* Call the clock system intitialization function.*/
bl SystemInit
-/* Call static constructors */
- bl __libc_init_array
-/* Call the application's entry point.*/
- bl main
+ bl _start
+ bx lr
LoopForever:
b LoopForever
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_GCC_ARM/stm32g471xx.ld b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_GCC_ARM/stm32g471xx.ld
new file mode 100644
index 0000000000..fd05c82aaf
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_GCC_ARM/stm32g471xx.ld
@@ -0,0 +1,206 @@
+/* Linker script to configure memory regions. */
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#include "../cmsis_nvic.h"
+
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) & 0xFFFFFFF8)
+
+MEMORY
+{
+ FLASH (rx) : ORIGIN = MBED_APP_START, LENGTH = MBED_APP_SIZE
+ RAM (rwx) : ORIGIN = MBED_RAM_START + VECTORS_SIZE, LENGTH = MBED_RAM_SIZE - VECTORS_SIZE
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ * Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ * __exidx_start
+ * __exidx_end
+ * __etext
+ * __data_start__
+ * __preinit_array_start
+ * __preinit_array_end
+ * __init_array_start
+ * __init_array_end
+ * __fini_array_start
+ * __fini_array_end
+ * __data_end__
+ * __bss_start__
+ * __bss_end__
+ * __end__
+ * end
+ * __HeapLimit
+ * __StackLimit
+ * __StackTop
+ * __stack
+ * _estack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+ .text :
+ {
+ KEEP(*(.isr_vector))
+ *(.text*)
+
+ KEEP(*(.init))
+ KEEP(*(.fini))
+
+ /* .ctors */
+ *crtbegin.o(.ctors)
+ *crtbegin?.o(.ctors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+ *(SORT(.ctors.*))
+ *(.ctors)
+
+ /* .dtors */
+ *crtbegin.o(.dtors)
+ *crtbegin?.o(.dtors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ *(SORT(.dtors.*))
+ *(.dtors)
+
+ *(.rodata*)
+
+ KEEP(*(.eh_frame*))
+ } > FLASH
+
+ .ARM.extab :
+ {
+ *(.ARM.extab* .gnu.linkonce.armextab.*)
+ } > FLASH
+
+ __exidx_start = .;
+ .ARM.exidx :
+ {
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ } > FLASH
+ __exidx_end = .;
+
+ /* Location counter can end up 2byte aligned with narrow Thumb code but
+ __etext is assumed by startup code to be the LMA of a section in RAM
+ which must be 8-byte aligned */
+ __etext = ALIGN (8);
+ _sidata = .;
+
+ .data : AT (__etext)
+ {
+ __data_start__ = .;
+ _sdata = .;
+ *(vtable)
+ *(.data*)
+
+ . = ALIGN(8);
+ /* preinit data */
+ PROVIDE_HIDDEN (__preinit_array_start = .);
+ KEEP(*(.preinit_array))
+ PROVIDE_HIDDEN (__preinit_array_end = .);
+
+ . = ALIGN(8);
+ /* init data */
+ PROVIDE_HIDDEN (__init_array_start = .);
+ KEEP(*(SORT(.init_array.*)))
+ KEEP(*(.init_array))
+ PROVIDE_HIDDEN (__init_array_end = .);
+
+ . = ALIGN(8);
+ /* finit data */
+ PROVIDE_HIDDEN (__fini_array_start = .);
+ KEEP(*(SORT(.fini_array.*)))
+ KEEP(*(.fini_array))
+ PROVIDE_HIDDEN (__fini_array_end = .);
+
+ KEEP(*(.jcr*))
+ . = ALIGN(8);
+ /* All data end */
+ __data_end__ = .;
+ _edata = .;
+
+ } > RAM
+
+ /* Uninitialized data section
+ * This region is not initialized by the C/C++ library and can be used to
+ * store state across soft reboots. */
+ .uninitialized (NOLOAD):
+ {
+ . = ALIGN(32);
+ __uninitialized_start = .;
+ *(.uninitialized)
+ KEEP(*(.keep.uninitialized))
+ . = ALIGN(32);
+ __uninitialized_end = .;
+ } > RAM
+
+ .bss :
+ {
+ . = ALIGN(8);
+ __bss_start__ = .;
+ _sbss = .;
+ *(.bss*)
+ *(COMMON)
+ . = ALIGN(8);
+ __bss_end__ = .;
+ _ebss = .;
+ } > RAM
+
+ .heap (COPY):
+ {
+ __end__ = .;
+ PROVIDE(end = .);
+ *(.heap*)
+ . = ORIGIN(RAM) + LENGTH(RAM) - MBED_BOOT_STACK_SIZE;
+ __HeapLimit = .;
+ } > RAM
+
+ /* .stack_dummy section doesn't contains any symbols. It is only
+ * used for linker to calculate size of stack sections, and assign
+ * values to stack symbols later */
+ .stack_dummy (COPY):
+ {
+ *(.stack*)
+ } > RAM
+
+ /* Set stack top to end of RAM, and stack limit move down by
+ * size of stack_dummy section */
+ __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+ _estack = __StackTop;
+ __StackLimit = __StackTop - MBED_BOOT_STACK_SIZE;
+ PROVIDE(__stack = __StackTop);
+
+ /* Check if data + heap + stack exceeds RAM limit */
+ ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_IAR/stm32g471xx.icf b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_IAR/stm32g471xx.icf
new file mode 100644
index 0000000000..396522c717
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/TOOLCHAIN_IAR/stm32g471xx.icf
@@ -0,0 +1,59 @@
+/* Linker script to configure memory regions.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+/* Device specific values */
+
+/* Tools provide -DMBED_ROM_START=xxx -DMBED_ROM_SIZE=xxx -DMBED_RAM_START=xxx -DMBED_RAM_SIZE=xxx */
+
+define symbol VECTORS = 118; /* This value must match NVIC_NUM_VECTORS in cmsis_nvic.h */
+define symbol HEAP_SIZE = 0xa000;
+
+/* Common - Do not change */
+
+if (!isdefinedsymbol(MBED_APP_START)) {
+ define symbol MBED_APP_START = MBED_ROM_START;
+}
+
+if (!isdefinedsymbol(MBED_APP_SIZE)) {
+ define symbol MBED_APP_SIZE = MBED_ROM_SIZE;
+}
+
+if (!isdefinedsymbol(MBED_BOOT_STACK_SIZE)) {
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ define symbol MBED_BOOT_STACK_SIZE = 0x400;
+}
+
+/* Round up VECTORS_SIZE to 8 bytes */
+define symbol VECTORS_SIZE = ((VECTORS * 4) + 7) & ~7;
+define symbol RAM_REGION_START = MBED_RAM_START + VECTORS_SIZE;
+define symbol RAM_REGION_SIZE = MBED_RAM_SIZE - VECTORS_SIZE;
+
+define memory mem with size = 4G;
+define region ROM_region = mem:[from MBED_APP_START size MBED_APP_SIZE];
+define region RAM_region = mem:[from RAM_REGION_START size RAM_REGION_SIZE];
+
+define block CSTACK with alignment = 8, size = MBED_BOOT_STACK_SIZE { };
+define block HEAP with alignment = 8, size = HEAP_SIZE { };
+
+initialize by copy { readwrite };
+do not initialize { section .noinit };
+
+place at address mem: MBED_APP_START { readonly section .intvec };
+
+place in ROM_region { readonly };
+place in RAM_region { readwrite,
+ block CSTACK, block HEAP };
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/cmsis_nvic.h b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/cmsis_nvic.h
new file mode 100644
index 0000000000..afd9918b84
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G471xx/cmsis_nvic.h
@@ -0,0 +1,42 @@
+/* mbed Microcontroller Library
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#ifndef MBED_CMSIS_NVIC_H
+#define MBED_CMSIS_NVIC_H
+
+#if !defined(MBED_ROM_START)
+#define MBED_ROM_START 0x8000000
+#endif
+
+#if !defined(MBED_ROM_SIZE)
+#define MBED_ROM_SIZE 0x80000 // 512 KB
+ // 0x40000 STM32G471RCTx STM32G471CCUx STM32G471VCHx STM32G471CCTx STM32G471VCIx STM32G471VCTx STM32G471MCTx STM32G471QCTx
+ // 0x80000 STM32G471RE STM32G471VETx STM32G471METx STM32G471VEHx STM32G471CEUx STM32G471QETx STM32G471MEYx STM32G471VEIx STM32G471CETx
+#warning "check MBED_ROM_SIZE value in cmsis_nvic.h"
+#endif
+
+#if !defined(MBED_RAM_START)
+#define MBED_RAM_START 0x20000000
+#endif
+
+#if !defined(MBED_RAM_SIZE)
+#define MBED_RAM_SIZE 0x20000 // 128 KB
+#endif
+
+#define NVIC_NUM_VECTORS 118
+#define NVIC_RAM_VECTOR_ADDRESS MBED_RAM_START
+
+#endif
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_ARM_STD/startup_stm32g473xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_ARM_STD/startup_stm32g473xx.S
index 801ad59b3d..b4324affd5 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_ARM_STD/startup_stm32g473xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_ARM_STD/startup_stm32g473xx.S
@@ -27,30 +27,6 @@
;*******************************************************************************
;* <<< Use Configuration Wizard in Context Menu >>>
;
-; Amount of memory (in bytes) allocated for Stack
-; Tailor this value to your application needs
-; Stack Configuration
-; Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Stack_Size EQU 0x400;
-
- AREA STACK, NOINIT, READWRITE, ALIGN=3
-Stack_Mem SPACE Stack_Size
-__initial_sp
-
-
-; Heap Configuration
-; Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Heap_Size EQU 0x200;
-
- AREA HEAP, NOINIT, READWRITE, ALIGN=3
-__heap_base
-Heap_Mem SPACE Heap_Size
-__heap_limit
-
PRESERVE8
THUMB
@@ -61,7 +37,8 @@ __heap_limit
EXPORT __Vectors_End
EXPORT __Vectors_Size
-__Vectors DCD __initial_sp ; Top of Stack
+ IMPORT |Image$$ARM_LIB_STACK$$ZI$$Limit|
+__Vectors DCD |Image$$ARM_LIB_STACK$$ZI$$Limit| ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
@@ -431,28 +408,6 @@ FMAC_IRQHandler
;*******************************************************************************
; User Stack and Heap initialization
;*******************************************************************************
- IF :DEF:__MICROLIB
-
- EXPORT __initial_sp
- EXPORT __heap_base
- EXPORT __heap_limit
-
- ELSE
-
- IMPORT __use_two_region_memory
- EXPORT __user_initial_stackheap
-
-__user_initial_stackheap
-
- LDR R0, = Heap_Mem
- LDR R1, =(Stack_Mem + Stack_Size)
- LDR R2, = (Heap_Mem + Heap_Size)
- LDR R3, = Stack_Mem
- BX LR
-
- ALIGN
-
- ENDIF
END
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_ARM_STD/stm32g473xx.sct b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_ARM_STD/stm32g473xx.sct
new file mode 100644
index 0000000000..50f930c713
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_ARM_STD/stm32g473xx.sct
@@ -0,0 +1,53 @@
+#! armcc -E
+; Scatter-Loading Description File
+;
+; SPDX-License-Identifier: BSD-3-Clause
+;******************************************************************************
+;* @attention
+;*
+;* Copyright (c) 2016-2020 STMicroelectronics.
+;* All rights reserved.
+;*
+;* This software component is licensed by ST under BSD 3-Clause license,
+;* the "License"; You may not use this file except in compliance with the
+;* License. You may obtain a copy of the License at:
+;* opensource.org/licenses/BSD-3-Clause
+;*
+;******************************************************************************
+
+#include "../cmsis_nvic.h"
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+/* This value is normally defined by the tools to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) AND ~7)
+
+LR_IROM1 MBED_APP_START MBED_APP_SIZE {
+
+ ER_IROM1 MBED_APP_START MBED_APP_SIZE {
+ *.o (RESET, +First)
+ *(InRoot$$Sections)
+ .ANY (+RO)
+ }
+
+ RW_IRAM1 (MBED_RAM_START + VECTORS_SIZE) { ; RW data
+ .ANY (+RW +ZI)
+ }
+
+ ARM_LIB_HEAP AlignExpr(+0, 16) EMPTY (MBED_RAM_START + MBED_RAM_SIZE - MBED_BOOT_STACK_SIZE - AlignExpr(ImageLimit(RW_IRAM1), 16)) { ; Heap growing up
+ }
+
+ ARM_LIB_STACK (MBED_RAM_START + MBED_RAM_SIZE) EMPTY -MBED_BOOT_STACK_SIZE { ; Stack region growing down
+ }
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_GCC_ARM/startup_stm32g473xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_GCC_ARM/startup_stm32g473xx.S
index 3b10aeb6ed..2fe3b3fa42 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_GCC_ARM/startup_stm32g473xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_GCC_ARM/startup_stm32g473xx.S
@@ -96,10 +96,8 @@ LoopFillZerobss:
/* Call the clock system intitialization function.*/
bl SystemInit
-/* Call static constructors */
- bl __libc_init_array
-/* Call the application's entry point.*/
- bl main
+ bl _start
+ bx lr
LoopForever:
b LoopForever
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_GCC_ARM/stm32g473xx.ld b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_GCC_ARM/stm32g473xx.ld
new file mode 100644
index 0000000000..fd05c82aaf
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_GCC_ARM/stm32g473xx.ld
@@ -0,0 +1,206 @@
+/* Linker script to configure memory regions. */
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#include "../cmsis_nvic.h"
+
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) & 0xFFFFFFF8)
+
+MEMORY
+{
+ FLASH (rx) : ORIGIN = MBED_APP_START, LENGTH = MBED_APP_SIZE
+ RAM (rwx) : ORIGIN = MBED_RAM_START + VECTORS_SIZE, LENGTH = MBED_RAM_SIZE - VECTORS_SIZE
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ * Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ * __exidx_start
+ * __exidx_end
+ * __etext
+ * __data_start__
+ * __preinit_array_start
+ * __preinit_array_end
+ * __init_array_start
+ * __init_array_end
+ * __fini_array_start
+ * __fini_array_end
+ * __data_end__
+ * __bss_start__
+ * __bss_end__
+ * __end__
+ * end
+ * __HeapLimit
+ * __StackLimit
+ * __StackTop
+ * __stack
+ * _estack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+ .text :
+ {
+ KEEP(*(.isr_vector))
+ *(.text*)
+
+ KEEP(*(.init))
+ KEEP(*(.fini))
+
+ /* .ctors */
+ *crtbegin.o(.ctors)
+ *crtbegin?.o(.ctors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+ *(SORT(.ctors.*))
+ *(.ctors)
+
+ /* .dtors */
+ *crtbegin.o(.dtors)
+ *crtbegin?.o(.dtors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ *(SORT(.dtors.*))
+ *(.dtors)
+
+ *(.rodata*)
+
+ KEEP(*(.eh_frame*))
+ } > FLASH
+
+ .ARM.extab :
+ {
+ *(.ARM.extab* .gnu.linkonce.armextab.*)
+ } > FLASH
+
+ __exidx_start = .;
+ .ARM.exidx :
+ {
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ } > FLASH
+ __exidx_end = .;
+
+ /* Location counter can end up 2byte aligned with narrow Thumb code but
+ __etext is assumed by startup code to be the LMA of a section in RAM
+ which must be 8-byte aligned */
+ __etext = ALIGN (8);
+ _sidata = .;
+
+ .data : AT (__etext)
+ {
+ __data_start__ = .;
+ _sdata = .;
+ *(vtable)
+ *(.data*)
+
+ . = ALIGN(8);
+ /* preinit data */
+ PROVIDE_HIDDEN (__preinit_array_start = .);
+ KEEP(*(.preinit_array))
+ PROVIDE_HIDDEN (__preinit_array_end = .);
+
+ . = ALIGN(8);
+ /* init data */
+ PROVIDE_HIDDEN (__init_array_start = .);
+ KEEP(*(SORT(.init_array.*)))
+ KEEP(*(.init_array))
+ PROVIDE_HIDDEN (__init_array_end = .);
+
+ . = ALIGN(8);
+ /* finit data */
+ PROVIDE_HIDDEN (__fini_array_start = .);
+ KEEP(*(SORT(.fini_array.*)))
+ KEEP(*(.fini_array))
+ PROVIDE_HIDDEN (__fini_array_end = .);
+
+ KEEP(*(.jcr*))
+ . = ALIGN(8);
+ /* All data end */
+ __data_end__ = .;
+ _edata = .;
+
+ } > RAM
+
+ /* Uninitialized data section
+ * This region is not initialized by the C/C++ library and can be used to
+ * store state across soft reboots. */
+ .uninitialized (NOLOAD):
+ {
+ . = ALIGN(32);
+ __uninitialized_start = .;
+ *(.uninitialized)
+ KEEP(*(.keep.uninitialized))
+ . = ALIGN(32);
+ __uninitialized_end = .;
+ } > RAM
+
+ .bss :
+ {
+ . = ALIGN(8);
+ __bss_start__ = .;
+ _sbss = .;
+ *(.bss*)
+ *(COMMON)
+ . = ALIGN(8);
+ __bss_end__ = .;
+ _ebss = .;
+ } > RAM
+
+ .heap (COPY):
+ {
+ __end__ = .;
+ PROVIDE(end = .);
+ *(.heap*)
+ . = ORIGIN(RAM) + LENGTH(RAM) - MBED_BOOT_STACK_SIZE;
+ __HeapLimit = .;
+ } > RAM
+
+ /* .stack_dummy section doesn't contains any symbols. It is only
+ * used for linker to calculate size of stack sections, and assign
+ * values to stack symbols later */
+ .stack_dummy (COPY):
+ {
+ *(.stack*)
+ } > RAM
+
+ /* Set stack top to end of RAM, and stack limit move down by
+ * size of stack_dummy section */
+ __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+ _estack = __StackTop;
+ __StackLimit = __StackTop - MBED_BOOT_STACK_SIZE;
+ PROVIDE(__stack = __StackTop);
+
+ /* Check if data + heap + stack exceeds RAM limit */
+ ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_IAR/stm32g473xx.icf b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_IAR/stm32g473xx.icf
new file mode 100644
index 0000000000..396522c717
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/TOOLCHAIN_IAR/stm32g473xx.icf
@@ -0,0 +1,59 @@
+/* Linker script to configure memory regions.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+/* Device specific values */
+
+/* Tools provide -DMBED_ROM_START=xxx -DMBED_ROM_SIZE=xxx -DMBED_RAM_START=xxx -DMBED_RAM_SIZE=xxx */
+
+define symbol VECTORS = 118; /* This value must match NVIC_NUM_VECTORS in cmsis_nvic.h */
+define symbol HEAP_SIZE = 0xa000;
+
+/* Common - Do not change */
+
+if (!isdefinedsymbol(MBED_APP_START)) {
+ define symbol MBED_APP_START = MBED_ROM_START;
+}
+
+if (!isdefinedsymbol(MBED_APP_SIZE)) {
+ define symbol MBED_APP_SIZE = MBED_ROM_SIZE;
+}
+
+if (!isdefinedsymbol(MBED_BOOT_STACK_SIZE)) {
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ define symbol MBED_BOOT_STACK_SIZE = 0x400;
+}
+
+/* Round up VECTORS_SIZE to 8 bytes */
+define symbol VECTORS_SIZE = ((VECTORS * 4) + 7) & ~7;
+define symbol RAM_REGION_START = MBED_RAM_START + VECTORS_SIZE;
+define symbol RAM_REGION_SIZE = MBED_RAM_SIZE - VECTORS_SIZE;
+
+define memory mem with size = 4G;
+define region ROM_region = mem:[from MBED_APP_START size MBED_APP_SIZE];
+define region RAM_region = mem:[from RAM_REGION_START size RAM_REGION_SIZE];
+
+define block CSTACK with alignment = 8, size = MBED_BOOT_STACK_SIZE { };
+define block HEAP with alignment = 8, size = HEAP_SIZE { };
+
+initialize by copy { readwrite };
+do not initialize { section .noinit };
+
+place at address mem: MBED_APP_START { readonly section .intvec };
+
+place in ROM_region { readonly };
+place in RAM_region { readwrite,
+ block CSTACK, block HEAP };
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/cmsis_nvic.h b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/cmsis_nvic.h
new file mode 100644
index 0000000000..30891318eb
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G473xx/cmsis_nvic.h
@@ -0,0 +1,43 @@
+/* mbed Microcontroller Library
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#ifndef MBED_CMSIS_NVIC_H
+#define MBED_CMSIS_NVIC_H
+
+#if !defined(MBED_ROM_START)
+#define MBED_ROM_START 0x8000000
+#endif
+
+#if !defined(MBED_ROM_SIZE)
+#define MBED_ROM_SIZE 0x80000 // 512 KB
+ // 0x40000 STM32G473CCUx STM32G473MCTx STM32G473VCHx STM32G473CCTx STM32G473VCTx STM32G473QCTx STM32G473RCTx STM32G473VCIx
+ // 0x20000 STM32G473RBTx STM32G473QBTx STM32G473MBTx STM32G473VBIx STM32G473CBUx STM32G473VBTx STM32G473VBHx STM32G473CBTx
+ // 0x80000 STM32G473CETx STM32G473RETx STM32G473MEUx STM32G473VEIx STM32G473CEUx STM32G473METx STM32G473VEHx STM32G473VETx STM32G473QETx
+#warning "check MBED_ROM_SIZE value in cmsis_nvic.h"
+#endif
+
+#if !defined(MBED_RAM_START)
+#define MBED_RAM_START 0x20000000
+#endif
+
+#if !defined(MBED_RAM_SIZE)
+#define MBED_RAM_SIZE 0x20000 // 128 KB
+#endif
+
+#define NVIC_NUM_VECTORS 118
+#define NVIC_RAM_VECTOR_ADDRESS MBED_RAM_START
+
+#endif
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_ARM_STD/startup_stm32g474xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_ARM_STD/startup_stm32g474xx.S
index 7671bc263a..c985971182 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_ARM_STD/startup_stm32g474xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_ARM_STD/startup_stm32g474xx.S
@@ -27,30 +27,6 @@
;*******************************************************************************
;* <<< Use Configuration Wizard in Context Menu >>>
;
-; Amount of memory (in bytes) allocated for Stack
-; Tailor this value to your application needs
-; Stack Configuration
-; Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Stack_Size EQU 0x400;
-
- AREA STACK, NOINIT, READWRITE, ALIGN=3
-Stack_Mem SPACE Stack_Size
-__initial_sp
-
-
-; Heap Configuration
-; Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Heap_Size EQU 0x200;
-
- AREA HEAP, NOINIT, READWRITE, ALIGN=3
-__heap_base
-Heap_Mem SPACE Heap_Size
-__heap_limit
-
PRESERVE8
THUMB
@@ -61,7 +37,8 @@ __heap_limit
EXPORT __Vectors_End
EXPORT __Vectors_Size
-__Vectors DCD __initial_sp ; Top of Stack
+ IMPORT |Image$$ARM_LIB_STACK$$ZI$$Limit|
+__Vectors DCD |Image$$ARM_LIB_STACK$$ZI$$Limit| ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
@@ -459,28 +436,6 @@ FMAC_IRQHandler
;*******************************************************************************
; User Stack and Heap initialization
;*******************************************************************************
- IF :DEF:__MICROLIB
-
- EXPORT __initial_sp
- EXPORT __heap_base
- EXPORT __heap_limit
-
- ELSE
-
- IMPORT __use_two_region_memory
- EXPORT __user_initial_stackheap
-
-__user_initial_stackheap
-
- LDR R0, = Heap_Mem
- LDR R1, =(Stack_Mem + Stack_Size)
- LDR R2, = (Heap_Mem + Heap_Size)
- LDR R3, = Stack_Mem
- BX LR
-
- ALIGN
-
- ENDIF
END
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_ARM_STD/stm32g474xx.sct b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_ARM_STD/stm32g474xx.sct
new file mode 100644
index 0000000000..50f930c713
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_ARM_STD/stm32g474xx.sct
@@ -0,0 +1,53 @@
+#! armcc -E
+; Scatter-Loading Description File
+;
+; SPDX-License-Identifier: BSD-3-Clause
+;******************************************************************************
+;* @attention
+;*
+;* Copyright (c) 2016-2020 STMicroelectronics.
+;* All rights reserved.
+;*
+;* This software component is licensed by ST under BSD 3-Clause license,
+;* the "License"; You may not use this file except in compliance with the
+;* License. You may obtain a copy of the License at:
+;* opensource.org/licenses/BSD-3-Clause
+;*
+;******************************************************************************
+
+#include "../cmsis_nvic.h"
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+/* This value is normally defined by the tools to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) AND ~7)
+
+LR_IROM1 MBED_APP_START MBED_APP_SIZE {
+
+ ER_IROM1 MBED_APP_START MBED_APP_SIZE {
+ *.o (RESET, +First)
+ *(InRoot$$Sections)
+ .ANY (+RO)
+ }
+
+ RW_IRAM1 (MBED_RAM_START + VECTORS_SIZE) { ; RW data
+ .ANY (+RW +ZI)
+ }
+
+ ARM_LIB_HEAP AlignExpr(+0, 16) EMPTY (MBED_RAM_START + MBED_RAM_SIZE - MBED_BOOT_STACK_SIZE - AlignExpr(ImageLimit(RW_IRAM1), 16)) { ; Heap growing up
+ }
+
+ ARM_LIB_STACK (MBED_RAM_START + MBED_RAM_SIZE) EMPTY -MBED_BOOT_STACK_SIZE { ; Stack region growing down
+ }
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_GCC_ARM/startup_stm32g474xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_GCC_ARM/startup_stm32g474xx.S
index 2b39625b65..6a6f09e04a 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_GCC_ARM/startup_stm32g474xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_GCC_ARM/startup_stm32g474xx.S
@@ -96,10 +96,8 @@ LoopFillZerobss:
/* Call the clock system intitialization function.*/
bl SystemInit
-/* Call static constructors */
- bl __libc_init_array
-/* Call the application's entry point.*/
- bl main
+ bl _start
+ bx lr
LoopForever:
b LoopForever
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_GCC_ARM/stm32g474xx.ld b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_GCC_ARM/stm32g474xx.ld
new file mode 100644
index 0000000000..fd05c82aaf
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_GCC_ARM/stm32g474xx.ld
@@ -0,0 +1,206 @@
+/* Linker script to configure memory regions. */
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#include "../cmsis_nvic.h"
+
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) & 0xFFFFFFF8)
+
+MEMORY
+{
+ FLASH (rx) : ORIGIN = MBED_APP_START, LENGTH = MBED_APP_SIZE
+ RAM (rwx) : ORIGIN = MBED_RAM_START + VECTORS_SIZE, LENGTH = MBED_RAM_SIZE - VECTORS_SIZE
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ * Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ * __exidx_start
+ * __exidx_end
+ * __etext
+ * __data_start__
+ * __preinit_array_start
+ * __preinit_array_end
+ * __init_array_start
+ * __init_array_end
+ * __fini_array_start
+ * __fini_array_end
+ * __data_end__
+ * __bss_start__
+ * __bss_end__
+ * __end__
+ * end
+ * __HeapLimit
+ * __StackLimit
+ * __StackTop
+ * __stack
+ * _estack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+ .text :
+ {
+ KEEP(*(.isr_vector))
+ *(.text*)
+
+ KEEP(*(.init))
+ KEEP(*(.fini))
+
+ /* .ctors */
+ *crtbegin.o(.ctors)
+ *crtbegin?.o(.ctors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+ *(SORT(.ctors.*))
+ *(.ctors)
+
+ /* .dtors */
+ *crtbegin.o(.dtors)
+ *crtbegin?.o(.dtors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ *(SORT(.dtors.*))
+ *(.dtors)
+
+ *(.rodata*)
+
+ KEEP(*(.eh_frame*))
+ } > FLASH
+
+ .ARM.extab :
+ {
+ *(.ARM.extab* .gnu.linkonce.armextab.*)
+ } > FLASH
+
+ __exidx_start = .;
+ .ARM.exidx :
+ {
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ } > FLASH
+ __exidx_end = .;
+
+ /* Location counter can end up 2byte aligned with narrow Thumb code but
+ __etext is assumed by startup code to be the LMA of a section in RAM
+ which must be 8-byte aligned */
+ __etext = ALIGN (8);
+ _sidata = .;
+
+ .data : AT (__etext)
+ {
+ __data_start__ = .;
+ _sdata = .;
+ *(vtable)
+ *(.data*)
+
+ . = ALIGN(8);
+ /* preinit data */
+ PROVIDE_HIDDEN (__preinit_array_start = .);
+ KEEP(*(.preinit_array))
+ PROVIDE_HIDDEN (__preinit_array_end = .);
+
+ . = ALIGN(8);
+ /* init data */
+ PROVIDE_HIDDEN (__init_array_start = .);
+ KEEP(*(SORT(.init_array.*)))
+ KEEP(*(.init_array))
+ PROVIDE_HIDDEN (__init_array_end = .);
+
+ . = ALIGN(8);
+ /* finit data */
+ PROVIDE_HIDDEN (__fini_array_start = .);
+ KEEP(*(SORT(.fini_array.*)))
+ KEEP(*(.fini_array))
+ PROVIDE_HIDDEN (__fini_array_end = .);
+
+ KEEP(*(.jcr*))
+ . = ALIGN(8);
+ /* All data end */
+ __data_end__ = .;
+ _edata = .;
+
+ } > RAM
+
+ /* Uninitialized data section
+ * This region is not initialized by the C/C++ library and can be used to
+ * store state across soft reboots. */
+ .uninitialized (NOLOAD):
+ {
+ . = ALIGN(32);
+ __uninitialized_start = .;
+ *(.uninitialized)
+ KEEP(*(.keep.uninitialized))
+ . = ALIGN(32);
+ __uninitialized_end = .;
+ } > RAM
+
+ .bss :
+ {
+ . = ALIGN(8);
+ __bss_start__ = .;
+ _sbss = .;
+ *(.bss*)
+ *(COMMON)
+ . = ALIGN(8);
+ __bss_end__ = .;
+ _ebss = .;
+ } > RAM
+
+ .heap (COPY):
+ {
+ __end__ = .;
+ PROVIDE(end = .);
+ *(.heap*)
+ . = ORIGIN(RAM) + LENGTH(RAM) - MBED_BOOT_STACK_SIZE;
+ __HeapLimit = .;
+ } > RAM
+
+ /* .stack_dummy section doesn't contains any symbols. It is only
+ * used for linker to calculate size of stack sections, and assign
+ * values to stack symbols later */
+ .stack_dummy (COPY):
+ {
+ *(.stack*)
+ } > RAM
+
+ /* Set stack top to end of RAM, and stack limit move down by
+ * size of stack_dummy section */
+ __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+ _estack = __StackTop;
+ __StackLimit = __StackTop - MBED_BOOT_STACK_SIZE;
+ PROVIDE(__stack = __StackTop);
+
+ /* Check if data + heap + stack exceeds RAM limit */
+ ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_IAR/stm32g474xx.icf b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_IAR/stm32g474xx.icf
new file mode 100644
index 0000000000..396522c717
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/TOOLCHAIN_IAR/stm32g474xx.icf
@@ -0,0 +1,59 @@
+/* Linker script to configure memory regions.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+/* Device specific values */
+
+/* Tools provide -DMBED_ROM_START=xxx -DMBED_ROM_SIZE=xxx -DMBED_RAM_START=xxx -DMBED_RAM_SIZE=xxx */
+
+define symbol VECTORS = 118; /* This value must match NVIC_NUM_VECTORS in cmsis_nvic.h */
+define symbol HEAP_SIZE = 0xa000;
+
+/* Common - Do not change */
+
+if (!isdefinedsymbol(MBED_APP_START)) {
+ define symbol MBED_APP_START = MBED_ROM_START;
+}
+
+if (!isdefinedsymbol(MBED_APP_SIZE)) {
+ define symbol MBED_APP_SIZE = MBED_ROM_SIZE;
+}
+
+if (!isdefinedsymbol(MBED_BOOT_STACK_SIZE)) {
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ define symbol MBED_BOOT_STACK_SIZE = 0x400;
+}
+
+/* Round up VECTORS_SIZE to 8 bytes */
+define symbol VECTORS_SIZE = ((VECTORS * 4) + 7) & ~7;
+define symbol RAM_REGION_START = MBED_RAM_START + VECTORS_SIZE;
+define symbol RAM_REGION_SIZE = MBED_RAM_SIZE - VECTORS_SIZE;
+
+define memory mem with size = 4G;
+define region ROM_region = mem:[from MBED_APP_START size MBED_APP_SIZE];
+define region RAM_region = mem:[from RAM_REGION_START size RAM_REGION_SIZE];
+
+define block CSTACK with alignment = 8, size = MBED_BOOT_STACK_SIZE { };
+define block HEAP with alignment = 8, size = HEAP_SIZE { };
+
+initialize by copy { readwrite };
+do not initialize { section .noinit };
+
+place at address mem: MBED_APP_START { readonly section .intvec };
+
+place in ROM_region { readonly };
+place in RAM_region { readwrite,
+ block CSTACK, block HEAP };
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/cmsis_nvic.h b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/cmsis_nvic.h
new file mode 100644
index 0000000000..0badcaa4a0
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G474xx/cmsis_nvic.h
@@ -0,0 +1,43 @@
+/* mbed Microcontroller Library
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#ifndef MBED_CMSIS_NVIC_H
+#define MBED_CMSIS_NVIC_H
+
+#if !defined(MBED_ROM_START)
+#define MBED_ROM_START 0x8000000
+#endif
+
+#if !defined(MBED_ROM_SIZE)
+#define MBED_ROM_SIZE 0x80000 // 512 KB
+ // 0x40000 STM32G474VCIx STM32G474CCTx STM32G474QCTx STM32G474VCHx STM32G474CCUx STM32G474MCTx STM32G474VCTx STM32G474RCTx
+ // 0x20000 STM32G474VBIx STM32G474MBTx STM32G474CBTx STM32G474RBTx STM32G474QBTx STM32G474VBHx STM32G474VBTx STM32G474CBUx
+ // 0x80000 STM32G474CEUx STM32G474VEHx STM32G474RETx STM32G474QETx STM32G474METx STM32G474CETx STM32G474VEIx STM32G474VETx STM32G474MEYx
+#warning "check MBED_ROM_SIZE value in cmsis_nvic.h"
+#endif
+
+#if !defined(MBED_RAM_START)
+#define MBED_RAM_START 0x20000000
+#endif
+
+#if !defined(MBED_RAM_SIZE)
+#define MBED_RAM_SIZE 0x20000 // 128 KB
+#endif
+
+#define NVIC_NUM_VECTORS 118
+#define NVIC_RAM_VECTOR_ADDRESS MBED_RAM_START
+
+#endif
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_ARM_STD/startup_stm32g483xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_ARM_STD/startup_stm32g483xx.S
index b5b693bc0b..ceaae6e778 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_ARM_STD/startup_stm32g483xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_ARM_STD/startup_stm32g483xx.S
@@ -27,30 +27,6 @@
;*******************************************************************************
;* <<< Use Configuration Wizard in Context Menu >>>
;
-; Amount of memory (in bytes) allocated for Stack
-; Tailor this value to your application needs
-; Stack Configuration
-; Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Stack_Size EQU 0x400;
-
- AREA STACK, NOINIT, READWRITE, ALIGN=3
-Stack_Mem SPACE Stack_Size
-__initial_sp
-
-
-; Heap Configuration
-; Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Heap_Size EQU 0x200;
-
- AREA HEAP, NOINIT, READWRITE, ALIGN=3
-__heap_base
-Heap_Mem SPACE Heap_Size
-__heap_limit
-
PRESERVE8
THUMB
@@ -61,7 +37,8 @@ __heap_limit
EXPORT __Vectors_End
EXPORT __Vectors_Size
-__Vectors DCD __initial_sp ; Top of Stack
+ IMPORT |Image$$ARM_LIB_STACK$$ZI$$Limit|
+__Vectors DCD |Image$$ARM_LIB_STACK$$ZI$$Limit| ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
@@ -433,28 +410,6 @@ FMAC_IRQHandler
;*******************************************************************************
; User Stack and Heap initialization
;*******************************************************************************
- IF :DEF:__MICROLIB
-
- EXPORT __initial_sp
- EXPORT __heap_base
- EXPORT __heap_limit
-
- ELSE
-
- IMPORT __use_two_region_memory
- EXPORT __user_initial_stackheap
-
-__user_initial_stackheap
-
- LDR R0, = Heap_Mem
- LDR R1, =(Stack_Mem + Stack_Size)
- LDR R2, = (Heap_Mem + Heap_Size)
- LDR R3, = Stack_Mem
- BX LR
-
- ALIGN
-
- ENDIF
END
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_ARM_STD/stm32g483xx.sct b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_ARM_STD/stm32g483xx.sct
new file mode 100644
index 0000000000..50f930c713
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_ARM_STD/stm32g483xx.sct
@@ -0,0 +1,53 @@
+#! armcc -E
+; Scatter-Loading Description File
+;
+; SPDX-License-Identifier: BSD-3-Clause
+;******************************************************************************
+;* @attention
+;*
+;* Copyright (c) 2016-2020 STMicroelectronics.
+;* All rights reserved.
+;*
+;* This software component is licensed by ST under BSD 3-Clause license,
+;* the "License"; You may not use this file except in compliance with the
+;* License. You may obtain a copy of the License at:
+;* opensource.org/licenses/BSD-3-Clause
+;*
+;******************************************************************************
+
+#include "../cmsis_nvic.h"
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+/* This value is normally defined by the tools to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) AND ~7)
+
+LR_IROM1 MBED_APP_START MBED_APP_SIZE {
+
+ ER_IROM1 MBED_APP_START MBED_APP_SIZE {
+ *.o (RESET, +First)
+ *(InRoot$$Sections)
+ .ANY (+RO)
+ }
+
+ RW_IRAM1 (MBED_RAM_START + VECTORS_SIZE) { ; RW data
+ .ANY (+RW +ZI)
+ }
+
+ ARM_LIB_HEAP AlignExpr(+0, 16) EMPTY (MBED_RAM_START + MBED_RAM_SIZE - MBED_BOOT_STACK_SIZE - AlignExpr(ImageLimit(RW_IRAM1), 16)) { ; Heap growing up
+ }
+
+ ARM_LIB_STACK (MBED_RAM_START + MBED_RAM_SIZE) EMPTY -MBED_BOOT_STACK_SIZE { ; Stack region growing down
+ }
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_GCC_ARM/startup_stm32g483xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_GCC_ARM/startup_stm32g483xx.S
index 15e3ca1321..867f379856 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_GCC_ARM/startup_stm32g483xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_GCC_ARM/startup_stm32g483xx.S
@@ -96,10 +96,8 @@ LoopFillZerobss:
/* Call the clock system intitialization function.*/
bl SystemInit
-/* Call static constructors */
- bl __libc_init_array
-/* Call the application's entry point.*/
- bl main
+ bl _start
+ bx lr
LoopForever:
b LoopForever
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_GCC_ARM/stm32g483xx.ld b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_GCC_ARM/stm32g483xx.ld
new file mode 100644
index 0000000000..fd05c82aaf
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_GCC_ARM/stm32g483xx.ld
@@ -0,0 +1,206 @@
+/* Linker script to configure memory regions. */
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#include "../cmsis_nvic.h"
+
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) & 0xFFFFFFF8)
+
+MEMORY
+{
+ FLASH (rx) : ORIGIN = MBED_APP_START, LENGTH = MBED_APP_SIZE
+ RAM (rwx) : ORIGIN = MBED_RAM_START + VECTORS_SIZE, LENGTH = MBED_RAM_SIZE - VECTORS_SIZE
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ * Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ * __exidx_start
+ * __exidx_end
+ * __etext
+ * __data_start__
+ * __preinit_array_start
+ * __preinit_array_end
+ * __init_array_start
+ * __init_array_end
+ * __fini_array_start
+ * __fini_array_end
+ * __data_end__
+ * __bss_start__
+ * __bss_end__
+ * __end__
+ * end
+ * __HeapLimit
+ * __StackLimit
+ * __StackTop
+ * __stack
+ * _estack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+ .text :
+ {
+ KEEP(*(.isr_vector))
+ *(.text*)
+
+ KEEP(*(.init))
+ KEEP(*(.fini))
+
+ /* .ctors */
+ *crtbegin.o(.ctors)
+ *crtbegin?.o(.ctors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+ *(SORT(.ctors.*))
+ *(.ctors)
+
+ /* .dtors */
+ *crtbegin.o(.dtors)
+ *crtbegin?.o(.dtors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ *(SORT(.dtors.*))
+ *(.dtors)
+
+ *(.rodata*)
+
+ KEEP(*(.eh_frame*))
+ } > FLASH
+
+ .ARM.extab :
+ {
+ *(.ARM.extab* .gnu.linkonce.armextab.*)
+ } > FLASH
+
+ __exidx_start = .;
+ .ARM.exidx :
+ {
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ } > FLASH
+ __exidx_end = .;
+
+ /* Location counter can end up 2byte aligned with narrow Thumb code but
+ __etext is assumed by startup code to be the LMA of a section in RAM
+ which must be 8-byte aligned */
+ __etext = ALIGN (8);
+ _sidata = .;
+
+ .data : AT (__etext)
+ {
+ __data_start__ = .;
+ _sdata = .;
+ *(vtable)
+ *(.data*)
+
+ . = ALIGN(8);
+ /* preinit data */
+ PROVIDE_HIDDEN (__preinit_array_start = .);
+ KEEP(*(.preinit_array))
+ PROVIDE_HIDDEN (__preinit_array_end = .);
+
+ . = ALIGN(8);
+ /* init data */
+ PROVIDE_HIDDEN (__init_array_start = .);
+ KEEP(*(SORT(.init_array.*)))
+ KEEP(*(.init_array))
+ PROVIDE_HIDDEN (__init_array_end = .);
+
+ . = ALIGN(8);
+ /* finit data */
+ PROVIDE_HIDDEN (__fini_array_start = .);
+ KEEP(*(SORT(.fini_array.*)))
+ KEEP(*(.fini_array))
+ PROVIDE_HIDDEN (__fini_array_end = .);
+
+ KEEP(*(.jcr*))
+ . = ALIGN(8);
+ /* All data end */
+ __data_end__ = .;
+ _edata = .;
+
+ } > RAM
+
+ /* Uninitialized data section
+ * This region is not initialized by the C/C++ library and can be used to
+ * store state across soft reboots. */
+ .uninitialized (NOLOAD):
+ {
+ . = ALIGN(32);
+ __uninitialized_start = .;
+ *(.uninitialized)
+ KEEP(*(.keep.uninitialized))
+ . = ALIGN(32);
+ __uninitialized_end = .;
+ } > RAM
+
+ .bss :
+ {
+ . = ALIGN(8);
+ __bss_start__ = .;
+ _sbss = .;
+ *(.bss*)
+ *(COMMON)
+ . = ALIGN(8);
+ __bss_end__ = .;
+ _ebss = .;
+ } > RAM
+
+ .heap (COPY):
+ {
+ __end__ = .;
+ PROVIDE(end = .);
+ *(.heap*)
+ . = ORIGIN(RAM) + LENGTH(RAM) - MBED_BOOT_STACK_SIZE;
+ __HeapLimit = .;
+ } > RAM
+
+ /* .stack_dummy section doesn't contains any symbols. It is only
+ * used for linker to calculate size of stack sections, and assign
+ * values to stack symbols later */
+ .stack_dummy (COPY):
+ {
+ *(.stack*)
+ } > RAM
+
+ /* Set stack top to end of RAM, and stack limit move down by
+ * size of stack_dummy section */
+ __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+ _estack = __StackTop;
+ __StackLimit = __StackTop - MBED_BOOT_STACK_SIZE;
+ PROVIDE(__stack = __StackTop);
+
+ /* Check if data + heap + stack exceeds RAM limit */
+ ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_IAR/stm32g483xx.icf b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_IAR/stm32g483xx.icf
new file mode 100644
index 0000000000..396522c717
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/TOOLCHAIN_IAR/stm32g483xx.icf
@@ -0,0 +1,59 @@
+/* Linker script to configure memory regions.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+/* Device specific values */
+
+/* Tools provide -DMBED_ROM_START=xxx -DMBED_ROM_SIZE=xxx -DMBED_RAM_START=xxx -DMBED_RAM_SIZE=xxx */
+
+define symbol VECTORS = 118; /* This value must match NVIC_NUM_VECTORS in cmsis_nvic.h */
+define symbol HEAP_SIZE = 0xa000;
+
+/* Common - Do not change */
+
+if (!isdefinedsymbol(MBED_APP_START)) {
+ define symbol MBED_APP_START = MBED_ROM_START;
+}
+
+if (!isdefinedsymbol(MBED_APP_SIZE)) {
+ define symbol MBED_APP_SIZE = MBED_ROM_SIZE;
+}
+
+if (!isdefinedsymbol(MBED_BOOT_STACK_SIZE)) {
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ define symbol MBED_BOOT_STACK_SIZE = 0x400;
+}
+
+/* Round up VECTORS_SIZE to 8 bytes */
+define symbol VECTORS_SIZE = ((VECTORS * 4) + 7) & ~7;
+define symbol RAM_REGION_START = MBED_RAM_START + VECTORS_SIZE;
+define symbol RAM_REGION_SIZE = MBED_RAM_SIZE - VECTORS_SIZE;
+
+define memory mem with size = 4G;
+define region ROM_region = mem:[from MBED_APP_START size MBED_APP_SIZE];
+define region RAM_region = mem:[from RAM_REGION_START size RAM_REGION_SIZE];
+
+define block CSTACK with alignment = 8, size = MBED_BOOT_STACK_SIZE { };
+define block HEAP with alignment = 8, size = HEAP_SIZE { };
+
+initialize by copy { readwrite };
+do not initialize { section .noinit };
+
+place at address mem: MBED_APP_START { readonly section .intvec };
+
+place in ROM_region { readonly };
+place in RAM_region { readwrite,
+ block CSTACK, block HEAP };
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/cmsis_nvic.h b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/cmsis_nvic.h
new file mode 100644
index 0000000000..6bbb29dd08
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G483xx/cmsis_nvic.h
@@ -0,0 +1,39 @@
+/* mbed Microcontroller Library
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#ifndef MBED_CMSIS_NVIC_H
+#define MBED_CMSIS_NVIC_H
+
+#if !defined(MBED_ROM_START)
+#define MBED_ROM_START 0x8000000
+#endif
+
+#if !defined(MBED_ROM_SIZE)
+#define MBED_ROM_SIZE 0x80000 // 512 KB
+#endif
+
+#if !defined(MBED_RAM_START)
+#define MBED_RAM_START 0x20000000
+#endif
+
+#if !defined(MBED_RAM_SIZE)
+#define MBED_RAM_SIZE 0x20000 // 128 KB
+#endif
+
+#define NVIC_NUM_VECTORS 118
+#define NVIC_RAM_VECTOR_ADDRESS MBED_RAM_START
+
+#endif
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_ARM_STD/startup_stm32g484xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_ARM_STD/startup_stm32g484xx.S
index c27ec1532c..8e1803c5b0 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_ARM_STD/startup_stm32g484xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_ARM_STD/startup_stm32g484xx.S
@@ -27,30 +27,6 @@
;*******************************************************************************
;* <<< Use Configuration Wizard in Context Menu >>>
;
-; Amount of memory (in bytes) allocated for Stack
-; Tailor this value to your application needs
-; Stack Configuration
-; Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Stack_Size EQU 0x400;
-
- AREA STACK, NOINIT, READWRITE, ALIGN=3
-Stack_Mem SPACE Stack_Size
-__initial_sp
-
-
-; Heap Configuration
-; Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
-;
-
-Heap_Size EQU 0x200;
-
- AREA HEAP, NOINIT, READWRITE, ALIGN=3
-__heap_base
-Heap_Mem SPACE Heap_Size
-__heap_limit
-
PRESERVE8
THUMB
@@ -61,7 +37,8 @@ __heap_limit
EXPORT __Vectors_End
EXPORT __Vectors_Size
-__Vectors DCD __initial_sp ; Top of Stack
+ IMPORT |Image$$ARM_LIB_STACK$$ZI$$Limit|
+__Vectors DCD |Image$$ARM_LIB_STACK$$ZI$$Limit| ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NMI_Handler ; NMI Handler
DCD HardFault_Handler ; Hard Fault Handler
@@ -461,28 +438,6 @@ FMAC_IRQHandler
;*******************************************************************************
; User Stack and Heap initialization
;*******************************************************************************
- IF :DEF:__MICROLIB
-
- EXPORT __initial_sp
- EXPORT __heap_base
- EXPORT __heap_limit
-
- ELSE
-
- IMPORT __use_two_region_memory
- EXPORT __user_initial_stackheap
-
-__user_initial_stackheap
-
- LDR R0, = Heap_Mem
- LDR R1, =(Stack_Mem + Stack_Size)
- LDR R2, = (Heap_Mem + Heap_Size)
- LDR R3, = Stack_Mem
- BX LR
-
- ALIGN
-
- ENDIF
END
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_ARM_STD/stm32g484xx.sct b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_ARM_STD/stm32g484xx.sct
new file mode 100644
index 0000000000..50f930c713
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_ARM_STD/stm32g484xx.sct
@@ -0,0 +1,53 @@
+#! armcc -E
+; Scatter-Loading Description File
+;
+; SPDX-License-Identifier: BSD-3-Clause
+;******************************************************************************
+;* @attention
+;*
+;* Copyright (c) 2016-2020 STMicroelectronics.
+;* All rights reserved.
+;*
+;* This software component is licensed by ST under BSD 3-Clause license,
+;* the "License"; You may not use this file except in compliance with the
+;* License. You may obtain a copy of the License at:
+;* opensource.org/licenses/BSD-3-Clause
+;*
+;******************************************************************************
+
+#include "../cmsis_nvic.h"
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+/* This value is normally defined by the tools to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) AND ~7)
+
+LR_IROM1 MBED_APP_START MBED_APP_SIZE {
+
+ ER_IROM1 MBED_APP_START MBED_APP_SIZE {
+ *.o (RESET, +First)
+ *(InRoot$$Sections)
+ .ANY (+RO)
+ }
+
+ RW_IRAM1 (MBED_RAM_START + VECTORS_SIZE) { ; RW data
+ .ANY (+RW +ZI)
+ }
+
+ ARM_LIB_HEAP AlignExpr(+0, 16) EMPTY (MBED_RAM_START + MBED_RAM_SIZE - MBED_BOOT_STACK_SIZE - AlignExpr(ImageLimit(RW_IRAM1), 16)) { ; Heap growing up
+ }
+
+ ARM_LIB_STACK (MBED_RAM_START + MBED_RAM_SIZE) EMPTY -MBED_BOOT_STACK_SIZE { ; Stack region growing down
+ }
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_GCC_ARM/startup_stm32g484xx.S b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_GCC_ARM/startup_stm32g484xx.S
index be0640457e..bd74690b1e 100644
--- a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_GCC_ARM/startup_stm32g484xx.S
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_GCC_ARM/startup_stm32g484xx.S
@@ -95,10 +95,8 @@ LoopFillZerobss:
/* Call the clock system intitialization function.*/
bl SystemInit
-/* Call static constructors */
- bl __libc_init_array
-/* Call the application's entry point.*/
- bl main
+ bl _start
+ bx lr
LoopForever:
b LoopForever
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_GCC_ARM/stm32g484xx.ld b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_GCC_ARM/stm32g484xx.ld
new file mode 100644
index 0000000000..fd05c82aaf
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_GCC_ARM/stm32g484xx.ld
@@ -0,0 +1,206 @@
+/* Linker script to configure memory regions. */
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#include "../cmsis_nvic.h"
+
+
+#if !defined(MBED_APP_START)
+ #define MBED_APP_START MBED_ROM_START
+#endif
+
+#if !defined(MBED_APP_SIZE)
+ #define MBED_APP_SIZE MBED_ROM_SIZE
+#endif
+
+#if !defined(MBED_BOOT_STACK_SIZE)
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+/* Round up VECTORS_SIZE to 8 bytes */
+#define VECTORS_SIZE (((NVIC_NUM_VECTORS * 4) + 7) & 0xFFFFFFF8)
+
+MEMORY
+{
+ FLASH (rx) : ORIGIN = MBED_APP_START, LENGTH = MBED_APP_SIZE
+ RAM (rwx) : ORIGIN = MBED_RAM_START + VECTORS_SIZE, LENGTH = MBED_RAM_SIZE - VECTORS_SIZE
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ * Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ * __exidx_start
+ * __exidx_end
+ * __etext
+ * __data_start__
+ * __preinit_array_start
+ * __preinit_array_end
+ * __init_array_start
+ * __init_array_end
+ * __fini_array_start
+ * __fini_array_end
+ * __data_end__
+ * __bss_start__
+ * __bss_end__
+ * __end__
+ * end
+ * __HeapLimit
+ * __StackLimit
+ * __StackTop
+ * __stack
+ * _estack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+ .text :
+ {
+ KEEP(*(.isr_vector))
+ *(.text*)
+
+ KEEP(*(.init))
+ KEEP(*(.fini))
+
+ /* .ctors */
+ *crtbegin.o(.ctors)
+ *crtbegin?.o(.ctors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+ *(SORT(.ctors.*))
+ *(.ctors)
+
+ /* .dtors */
+ *crtbegin.o(.dtors)
+ *crtbegin?.o(.dtors)
+ *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+ *(SORT(.dtors.*))
+ *(.dtors)
+
+ *(.rodata*)
+
+ KEEP(*(.eh_frame*))
+ } > FLASH
+
+ .ARM.extab :
+ {
+ *(.ARM.extab* .gnu.linkonce.armextab.*)
+ } > FLASH
+
+ __exidx_start = .;
+ .ARM.exidx :
+ {
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ } > FLASH
+ __exidx_end = .;
+
+ /* Location counter can end up 2byte aligned with narrow Thumb code but
+ __etext is assumed by startup code to be the LMA of a section in RAM
+ which must be 8-byte aligned */
+ __etext = ALIGN (8);
+ _sidata = .;
+
+ .data : AT (__etext)
+ {
+ __data_start__ = .;
+ _sdata = .;
+ *(vtable)
+ *(.data*)
+
+ . = ALIGN(8);
+ /* preinit data */
+ PROVIDE_HIDDEN (__preinit_array_start = .);
+ KEEP(*(.preinit_array))
+ PROVIDE_HIDDEN (__preinit_array_end = .);
+
+ . = ALIGN(8);
+ /* init data */
+ PROVIDE_HIDDEN (__init_array_start = .);
+ KEEP(*(SORT(.init_array.*)))
+ KEEP(*(.init_array))
+ PROVIDE_HIDDEN (__init_array_end = .);
+
+ . = ALIGN(8);
+ /* finit data */
+ PROVIDE_HIDDEN (__fini_array_start = .);
+ KEEP(*(SORT(.fini_array.*)))
+ KEEP(*(.fini_array))
+ PROVIDE_HIDDEN (__fini_array_end = .);
+
+ KEEP(*(.jcr*))
+ . = ALIGN(8);
+ /* All data end */
+ __data_end__ = .;
+ _edata = .;
+
+ } > RAM
+
+ /* Uninitialized data section
+ * This region is not initialized by the C/C++ library and can be used to
+ * store state across soft reboots. */
+ .uninitialized (NOLOAD):
+ {
+ . = ALIGN(32);
+ __uninitialized_start = .;
+ *(.uninitialized)
+ KEEP(*(.keep.uninitialized))
+ . = ALIGN(32);
+ __uninitialized_end = .;
+ } > RAM
+
+ .bss :
+ {
+ . = ALIGN(8);
+ __bss_start__ = .;
+ _sbss = .;
+ *(.bss*)
+ *(COMMON)
+ . = ALIGN(8);
+ __bss_end__ = .;
+ _ebss = .;
+ } > RAM
+
+ .heap (COPY):
+ {
+ __end__ = .;
+ PROVIDE(end = .);
+ *(.heap*)
+ . = ORIGIN(RAM) + LENGTH(RAM) - MBED_BOOT_STACK_SIZE;
+ __HeapLimit = .;
+ } > RAM
+
+ /* .stack_dummy section doesn't contains any symbols. It is only
+ * used for linker to calculate size of stack sections, and assign
+ * values to stack symbols later */
+ .stack_dummy (COPY):
+ {
+ *(.stack*)
+ } > RAM
+
+ /* Set stack top to end of RAM, and stack limit move down by
+ * size of stack_dummy section */
+ __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+ _estack = __StackTop;
+ __StackLimit = __StackTop - MBED_BOOT_STACK_SIZE;
+ PROVIDE(__stack = __StackTop);
+
+ /* Check if data + heap + stack exceeds RAM limit */
+ ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_IAR/stm32g484xx.icf b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_IAR/stm32g484xx.icf
new file mode 100644
index 0000000000..396522c717
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/TOOLCHAIN_IAR/stm32g484xx.icf
@@ -0,0 +1,59 @@
+/* Linker script to configure memory regions.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+/* Device specific values */
+
+/* Tools provide -DMBED_ROM_START=xxx -DMBED_ROM_SIZE=xxx -DMBED_RAM_START=xxx -DMBED_RAM_SIZE=xxx */
+
+define symbol VECTORS = 118; /* This value must match NVIC_NUM_VECTORS in cmsis_nvic.h */
+define symbol HEAP_SIZE = 0xa000;
+
+/* Common - Do not change */
+
+if (!isdefinedsymbol(MBED_APP_START)) {
+ define symbol MBED_APP_START = MBED_ROM_START;
+}
+
+if (!isdefinedsymbol(MBED_APP_SIZE)) {
+ define symbol MBED_APP_SIZE = MBED_ROM_SIZE;
+}
+
+if (!isdefinedsymbol(MBED_BOOT_STACK_SIZE)) {
+ /* This value is normally defined by the tools
+ to 0x1000 for bare metal and 0x400 for RTOS */
+ define symbol MBED_BOOT_STACK_SIZE = 0x400;
+}
+
+/* Round up VECTORS_SIZE to 8 bytes */
+define symbol VECTORS_SIZE = ((VECTORS * 4) + 7) & ~7;
+define symbol RAM_REGION_START = MBED_RAM_START + VECTORS_SIZE;
+define symbol RAM_REGION_SIZE = MBED_RAM_SIZE - VECTORS_SIZE;
+
+define memory mem with size = 4G;
+define region ROM_region = mem:[from MBED_APP_START size MBED_APP_SIZE];
+define region RAM_region = mem:[from RAM_REGION_START size RAM_REGION_SIZE];
+
+define block CSTACK with alignment = 8, size = MBED_BOOT_STACK_SIZE { };
+define block HEAP with alignment = 8, size = HEAP_SIZE { };
+
+initialize by copy { readwrite };
+do not initialize { section .noinit };
+
+place at address mem: MBED_APP_START { readonly section .intvec };
+
+place in ROM_region { readonly };
+place in RAM_region { readwrite,
+ block CSTACK, block HEAP };
diff --git a/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/cmsis_nvic.h b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/cmsis_nvic.h
new file mode 100644
index 0000000000..6bbb29dd08
--- /dev/null
+++ b/targets/TARGET_STM/TARGET_STM32G4/TARGET_STM32G484xx/cmsis_nvic.h
@@ -0,0 +1,39 @@
+/* mbed Microcontroller Library
+ * SPDX-License-Identifier: BSD-3-Clause
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2016-2020 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+*/
+
+#ifndef MBED_CMSIS_NVIC_H
+#define MBED_CMSIS_NVIC_H
+
+#if !defined(MBED_ROM_START)
+#define MBED_ROM_START 0x8000000
+#endif
+
+#if !defined(MBED_ROM_SIZE)
+#define MBED_ROM_SIZE 0x80000 // 512 KB
+#endif
+
+#if !defined(MBED_RAM_START)
+#define MBED_RAM_START 0x20000000
+#endif
+
+#if !defined(MBED_RAM_SIZE)
+#define MBED_RAM_SIZE 0x20000 // 128 KB
+#endif
+
+#define NVIC_NUM_VECTORS 118
+#define NVIC_RAM_VECTOR_ADDRESS MBED_RAM_START
+
+#endif