From f42f99023a8eed9815c88ae177cec6c6acf34c13 Mon Sep 17 00:00:00 2001
From: biliouriv <biliouriv@gmail.com>
Date: Fri, 4 Nov 2022 15:23:20 +0100
Subject: [PATCH 01/12] [Bootloader] boot modifications for Bootloader Updater

---
 engine/bootloader/bootloader_core.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/engine/bootloader/bootloader_core.c b/engine/bootloader/bootloader_core.c
index 70ad9fe69..0fa1cb06e 100644
--- a/engine/bootloader/bootloader_core.c
+++ b/engine/bootloader/bootloader_core.c
@@ -41,8 +41,10 @@ bool load_flag          = false;
 uint16_t source_id      = 0; // used to save source_id, ie gate_id
 uint32_t tickstart      = 0;
 
+    #ifndef BOOTLOADER_UPDATER
 // Create a variable of the size of mode flash value allowing to init the shared flash section
 const uint8_t __attribute__((used)) __attribute__((section(".boot_flags"))) sharedSection = BOOT_MODE;
+    #endif
 
 /*******************************************************************************
  * Function
@@ -88,7 +90,11 @@ void LuosBootloader_JumpToBootloader(void)
 void LuosBootloader_Init(void)
 {
     revision_t version = {.major = 2, .minor = 0, .build = 0};
+    #ifdef BOOTLOADER_UPDATER
+    Luos_CreateService(0, VOID_TYPE, "boot_updater", version);
+    #else
     Luos_CreateService(0, VOID_TYPE, "boot_service", version);
+    #endif
 
     // set ID node saved in flash
     LuosBootloader_SetNodeID();
@@ -161,7 +167,11 @@ void LuosBootloader_SetNodeID(void)
  ******************************************************************************/
 uint8_t LuosBootloader_IsEnoughSpace(uint32_t binary_size)
 {
+    #ifdef BOOTLOADER_UPDATER
+    uint32_t free_space = BOOT_START_ADDRESS - APP_START_ADDRESS - 1;
+    #else
     uint32_t free_space = APP_END_ADDRESS - APP_START_ADDRESS;
+    #endif
     if (free_space > binary_size)
     {
         return SUCCEED;

From 629ab085b6810dfcfc5fc23d01747da16274f707 Mon Sep 17 00:00:00 2001
From: biliouriv <biliouriv@gmail.com>
Date: Fri, 4 Nov 2022 15:24:30 +0100
Subject: [PATCH 02/12] [Bootloader example] Boot updater for NUCLEO-L432KC

---
 .../custom_bootloader_updater_script.ld       | 182 ++++++++++++++++++
 .../NUCLEO-L432KC/bootloader/node_config.h    |   5 +
 .../NUCLEO-L432KC/bootloader/platformio.ini   |  25 ++-
 3 files changed, 211 insertions(+), 1 deletion(-)
 create mode 100644 examples/projects/NUCLEO-L432KC/bootloader/linker/custom_bootloader_updater_script.ld

diff --git a/examples/projects/NUCLEO-L432KC/bootloader/linker/custom_bootloader_updater_script.ld b/examples/projects/NUCLEO-L432KC/bootloader/linker/custom_bootloader_updater_script.ld
new file mode 100644
index 000000000..d924852f3
--- /dev/null
+++ b/examples/projects/NUCLEO-L432KC/bootloader/linker/custom_bootloader_updater_script.ld
@@ -0,0 +1,182 @@
+/**
+ ******************************************************************************
+ * @file      LinkerScript.ld
+ * @author    Auto-generated by STM32CubeIDE
+ * @brief     Linker script for STM32L432KCUx Device from STM32L4 series
+ *                      256Kbytes FLASH
+ *                      64Kbytes RAM
+ *
+ *            Set heap size, stack size and stack location according
+ *            to application requirements.
+ *
+ *            Set memory bank area and size if external memory is used
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * 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
+ *
+ ******************************************************************************
+ */
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM);	/* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200;	/* required amount of heap  */
+_Min_Stack_Size = 0x400;	/* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM    (xrw)    : ORIGIN = 0x20000000,   LENGTH = 64K
+  FLASH    (rx)    : ORIGIN = 0x0800C800,   LENGTH = 48K
+  SHRD_MEM  (rw) : ORIGIN = 0x0800C000,   LENGTH = 2K
+}
+
+/* Sections */
+SECTIONS
+{
+  /* placing my boot flags section at given address: */
+  .boot_flags :
+  {
+    KEEP(*(.boot_flags)) /* keep my variable even if not referenced */
+  } > SHRD_MEM
+
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { 
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+  
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data : 
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+    
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
diff --git a/examples/projects/NUCLEO-L432KC/bootloader/node_config.h b/examples/projects/NUCLEO-L432KC/bootloader/node_config.h
index c2c242240..36f2f9fe9 100644
--- a/examples/projects/NUCLEO-L432KC/bootloader/node_config.h
+++ b/examples/projects/NUCLEO-L432KC/bootloader/node_config.h
@@ -91,5 +91,10 @@
  *    APP_START_ADDRESS     | 0x0800C800                 | Start address of application with bootloader
  *    APP_END_ADDRESS       | FLASH_END                  | End address of application with bootloader
  ******************************************************************************/
+#ifdef BOOTLOADER_UPDATER
+    #define BOOT_START_ADDRESS 0x800C800
+    #define APP_START_ADDRESS  0x8000000
+    #define APP_END_ADDRESS    0x800BFFF
+#endif
 
 #endif /* _NODE_CONFIG_H_ */
diff --git a/examples/projects/NUCLEO-L432KC/bootloader/platformio.ini b/examples/projects/NUCLEO-L432KC/bootloader/platformio.ini
index 5ff5a0d18..29596d0f6 100644
--- a/examples/projects/NUCLEO-L432KC/bootloader/platformio.ini
+++ b/examples/projects/NUCLEO-L432KC/bootloader/platformio.ini
@@ -8,11 +8,16 @@
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
-[env:nucleo_l432kc]
+[platformio]
+default_envs = nucleo_l432kc
+
+[env]
 platform = ststm32
 board = nucleo_l432kc
 lib_extra_dirs = $PROJECT_DIR/../../../../../
 framework = stm32cube
+
+[env:nucleo_l432kc]
 board_build.ldscript = linker/custom_bootloader_script.ld
 build_unflags = -Os
 build_flags =
@@ -27,3 +32,21 @@ lib_deps =
 debug_tool = stlink
 upload_protocol = stlink
 
+[env:nucleo_l432kc_updater]
+board_build.ldscript = linker/custom_bootloader_updater_script.ld
+build_unflags = -Os
+build_flags =
+    -O1
+    -include node_config.h
+    -DUSE_HAL_DRIVER
+    -DUSE_FULL_LL_DRIVER
+    -DLUOSHAL=STM32L4
+    -DBOOTLOADER
+    -DBOOTLOADER_UPDATER
+lib_deps =
+    luos_engine@^2.6.4   
+upload_protocol = custom
+upload_flags =
+    -t2
+upload_command = pyluos-bootloader flash $UPLOAD_PORT $UPLOAD_FLAGS -b $SOURCE
+

From 8c6e69a00bc41d0f2b8adc7c5a11dedd5d2f57fd Mon Sep 17 00:00:00 2001
From: biliouriv <biliouriv@gmail.com>
Date: Fri, 4 Nov 2022 18:15:02 +0100
Subject: [PATCH 03/12] [Bootloader example] bootloader updater for
 NUCLEO-F072RB

---
 .../custom_bootloader_updater_script.ld       | 189 ++++++++++++++++++
 .../linker/custom_new_bootloader_script.ld    | 189 ++++++++++++++++++
 .../NUCLEO-F072RB/bootloader/node_config.h    |   6 +-
 .../NUCLEO-F072RB/bootloader/platformio.ini   |  42 +++-
 4 files changed, 421 insertions(+), 5 deletions(-)
 create mode 100644 examples/projects/NUCLEO-F072RB/bootloader/linker/custom_bootloader_updater_script.ld
 create mode 100644 examples/projects/NUCLEO-F072RB/bootloader/linker/custom_new_bootloader_script.ld

diff --git a/examples/projects/NUCLEO-F072RB/bootloader/linker/custom_bootloader_updater_script.ld b/examples/projects/NUCLEO-F072RB/bootloader/linker/custom_bootloader_updater_script.ld
new file mode 100644
index 000000000..8a899f1dd
--- /dev/null
+++ b/examples/projects/NUCLEO-F072RB/bootloader/linker/custom_bootloader_updater_script.ld
@@ -0,0 +1,189 @@
+/**
+ ******************************************************************************
+ * @file      LinkerScript.ld
+ * @author    Auto-generated by STM32CubeIDE
+ * @brief     Linker script for STM32F072RBTx Device from STM32F0 series
+ *                      128Kbytes FLASH
+ *                      16Kbytes RAM
+ *
+ *            Set heap size, stack size and stack location according
+ *            to application requirements.
+ *
+ *            Set memory bank area and size if external memory is used
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * 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
+ *
+ ******************************************************************************
+ */
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM);	/* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200;	/* required amount of heap  */
+_Min_Stack_Size = 0x400;	/* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM_RSVD (xrw)  : ORIGIN = 0x20000000,   LENGTH = 1K
+  RAM    (xrw)    : ORIGIN = 0x20000400,   LENGTH = 15K
+  FLASH    (rw)    : ORIGIN = 0x800C800,   LENGTH = 48K
+  SHRD_MEM (rx)    : ORIGIN = 0x800C000,   LENGTH = 2K
+}
+
+/* Sections */
+SECTIONS
+{
+  /* placing my boot flags section at given address: */
+  .boot_flags :
+  {
+    KEEP(*(.boot_flags)) /* keep my variable even if not referenced */
+  } > SHRD_MEM
+  
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { 
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+  
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data : 
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+    
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  .boot_data :
+  {
+    *(.rsvd.data)
+    *(.rsvd.data*)
+  } > RAM_RSVD
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
diff --git a/examples/projects/NUCLEO-F072RB/bootloader/linker/custom_new_bootloader_script.ld b/examples/projects/NUCLEO-F072RB/bootloader/linker/custom_new_bootloader_script.ld
new file mode 100644
index 000000000..4baac8d22
--- /dev/null
+++ b/examples/projects/NUCLEO-F072RB/bootloader/linker/custom_new_bootloader_script.ld
@@ -0,0 +1,189 @@
+/**
+ ******************************************************************************
+ * @file      LinkerScript.ld
+ * @author    Auto-generated by STM32CubeIDE
+ * @brief     Linker script for STM32F072RBTx Device from STM32F0 series
+ *                      128Kbytes FLASH
+ *                      16Kbytes RAM
+ *
+ *            Set heap size, stack size and stack location according
+ *            to application requirements.
+ *
+ *            Set memory bank area and size if external memory is used
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * 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
+ *
+ ******************************************************************************
+ */
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM);	/* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200;	/* required amount of heap  */
+_Min_Stack_Size = 0x400;	/* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM_RSVD (xrw)  : ORIGIN = 0x20000000,   LENGTH = 1K
+  RAM    (xrw)    : ORIGIN = 0x20000400,   LENGTH = 15K
+  FLASH    (rx)    : ORIGIN = 0x8000000,   LENGTH = 48K
+  SHRD_MEM (rx)    : ORIGIN = 0x800C000,   LENGTH = 2K
+}
+
+/* Sections */
+SECTIONS
+{
+  /* placing my boot flags section at given address: */
+  .boot_flags :
+  {
+    KEEP(*(.boot_flags)) /* keep my variable even if not referenced */
+  } > SHRD_MEM
+  
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { 
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+  
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data : 
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+    
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  .boot_data :
+  {
+    *(.rsvd.data)
+    *(.rsvd.data*)
+  } > RAM_RSVD
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
diff --git a/examples/projects/NUCLEO-F072RB/bootloader/node_config.h b/examples/projects/NUCLEO-F072RB/bootloader/node_config.h
index b872e47f2..0e1ee0e81 100644
--- a/examples/projects/NUCLEO-F072RB/bootloader/node_config.h
+++ b/examples/projects/NUCLEO-F072RB/bootloader/node_config.h
@@ -96,5 +96,9 @@
  *    APP_START_ADDRESS     | 0x0800C800                 | Start address of application with bootloader
  *    APP_END_ADDRESS       | FLASH_BANK1_END=0x0801FFFF | End address of application with bootloader
  ******************************************************************************/
-
+#ifdef BOOTLOADER_UPDATER
+    #define BOOT_START_ADDRESS 0x800C800
+    #define APP_START_ADDRESS  0x8000000
+    #define APP_END_ADDRESS    0x800BFFF
+#endif
 #endif /* _NODE_CONFIG_H_ */
diff --git a/examples/projects/NUCLEO-F072RB/bootloader/platformio.ini b/examples/projects/NUCLEO-F072RB/bootloader/platformio.ini
index 4aa945588..ee5630c05 100644
--- a/examples/projects/NUCLEO-F072RB/bootloader/platformio.ini
+++ b/examples/projects/NUCLEO-F072RB/bootloader/platformio.ini
@@ -7,12 +7,18 @@
 ;
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
+[platformio]
+default_envs = nucleo_f072rb
 
-[env:nucleo_f072rb]
+[env]
 platform = ststm32
 board = nucleo_f072rb
 lib_extra_dirs = $PROJECT_DIR/../../../../../
 framework = stm32cube
+lib_deps =
+    luos_engine@^2.8.0
+
+[env:nucleo_f072rb]
 board_build.ldscript = linker/custom_bootloader_script.ld
 build_unflags = -Os
 build_flags =
@@ -22,8 +28,36 @@ build_flags =
     -DUSE_FULL_LL_DRIVER
     -DLUOSHAL=STM32F0
     -O1
-debug_build_flags = -O0 -g -ggdb
-lib_deps =
-    luos_engine@^2.8.0
 debug_tool = stlink
 upload_protocol = stlink
+
+[env:nucleo_f072rb_updater]
+board_build.ldscript = linker/custom_bootloader_updater_script.ld
+build_unflags = -Os
+build_flags =
+    -include node_config.h
+    -DBOOTLOADER
+    -DBOOTLOADER_UPDATER
+    -DUSE_HAL_DRIVER
+    -DUSE_FULL_LL_DRIVER
+    -DLUOSHAL=STM32F0
+    -O1
+upload_protocol = custom
+upload_flags =
+    -t2
+upload_command = pyluos-bootloader flash $UPLOAD_PORT $UPLOAD_FLAGS -b $SOURCE
+
+[env:nucleo_f072rb_new_boot]
+board_build.ldscript = linker/custom_new_bootloader_script.ld
+build_unflags = -Os
+build_flags =
+    -include node_config.h
+    -DBOOTLOADER
+    -DUSE_HAL_DRIVER
+    -DUSE_FULL_LL_DRIVER
+    -DLUOSHAL=STM32F0
+    -O1
+upload_protocol = custom
+upload_flags =
+    -t2
+upload_command = pyluos-bootloader flash $UPLOAD_PORT $UPLOAD_FLAGS -b $SOURCE

From c8b61ac65f7840dcaa06f9510538066b63a56799 Mon Sep 17 00:00:00 2001
From: biliouriv <biliouriv@gmail.com>
Date: Fri, 4 Nov 2022 18:16:20 +0100
Subject: [PATCH 04/12] [Bootloader] bootloader updater for l0

---
 .../custom_bootloader_updater_script.ld       | 190 ++++++++++++++++++
 .../linker/custom_new_bootloader_script.ld    | 190 ++++++++++++++++++
 examples/projects/l0/bootloader/node_config.h |   5 +
 .../projects/l0/bootloader/platformio.ini     |  37 +++-
 4 files changed, 418 insertions(+), 4 deletions(-)
 create mode 100644 examples/projects/l0/bootloader/linker/custom_bootloader_updater_script.ld
 create mode 100644 examples/projects/l0/bootloader/linker/custom_new_bootloader_script.ld

diff --git a/examples/projects/l0/bootloader/linker/custom_bootloader_updater_script.ld b/examples/projects/l0/bootloader/linker/custom_bootloader_updater_script.ld
new file mode 100644
index 000000000..5c47e8dd8
--- /dev/null
+++ b/examples/projects/l0/bootloader/linker/custom_bootloader_updater_script.ld
@@ -0,0 +1,190 @@
+/**
+ ******************************************************************************
+ * @file      LinkerScript.ld
+ * @author    Auto-generated by STM32CubeIDE
+ * @brief     Linker script for STM32F072RBTx Device from STM32F0 series
+ *                      128Kbytes FLASH
+ *                      16Kbytes RAM
+ *
+ *            Set heap size, stack size and stack location according
+ *            to application requirements.
+ *
+ *            Set memory bank area and size if external memory is used
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * 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
+ *
+ ******************************************************************************
+ */
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM);	/* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200;	/* required amount of heap  */
+_Min_Stack_Size = 0x400;	/* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM_RSVD (xrw)  : ORIGIN = 0x20000000,   LENGTH = 1K
+  RAM    (xrw)    : ORIGIN = 0x20000400,   LENGTH = 15K
+  FLASH    (rw)    : ORIGIN = 0x800C800,   LENGTH = 48K
+  SHRD_MEM (rx)    : ORIGIN = 0x800C000,   LENGTH = 2K
+}
+
+/* Sections */
+
+SECTIONS
+{
+  /* placing my boot flags section at given address: */
+  .boot_flags :
+  {
+    KEEP(*(.boot_flags)) /* keep my variable even if not referenced */
+  } > SHRD_MEM
+
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { 
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+  
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data : 
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+    
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  .boot_data :
+  {
+    *(.rsvd.data)
+    *(.rsvd.data*)
+  } > RAM_RSVD
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
diff --git a/examples/projects/l0/bootloader/linker/custom_new_bootloader_script.ld b/examples/projects/l0/bootloader/linker/custom_new_bootloader_script.ld
new file mode 100644
index 000000000..10aeffb7b
--- /dev/null
+++ b/examples/projects/l0/bootloader/linker/custom_new_bootloader_script.ld
@@ -0,0 +1,190 @@
+/**
+ ******************************************************************************
+ * @file      LinkerScript.ld
+ * @author    Auto-generated by STM32CubeIDE
+ * @brief     Linker script for STM32F072RBTx Device from STM32F0 series
+ *                      128Kbytes FLASH
+ *                      16Kbytes RAM
+ *
+ *            Set heap size, stack size and stack location according
+ *            to application requirements.
+ *
+ *            Set memory bank area and size if external memory is used
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * 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
+ *
+ ******************************************************************************
+ */
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM);	/* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200;	/* required amount of heap  */
+_Min_Stack_Size = 0x400;	/* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM_RSVD (xrw)  : ORIGIN = 0x20000000,   LENGTH = 1K
+  RAM    (xrw)    : ORIGIN = 0x20000400,   LENGTH = 15K
+  FLASH    (rw)    : ORIGIN = 0x8000000,   LENGTH = 48K
+  SHRD_MEM (rx)    : ORIGIN = 0x800C000,   LENGTH = 2K
+}
+
+/* Sections */
+
+SECTIONS
+{
+  /* placing my boot flags section at given address: */
+  .boot_flags :
+  {
+    KEEP(*(.boot_flags)) /* keep my variable even if not referenced */
+  } > SHRD_MEM
+
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { 
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+  
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data : 
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+    
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  .boot_data :
+  {
+    *(.rsvd.data)
+    *(.rsvd.data*)
+  } > RAM_RSVD
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
diff --git a/examples/projects/l0/bootloader/node_config.h b/examples/projects/l0/bootloader/node_config.h
index eed1766b3..4eb86040c 100644
--- a/examples/projects/l0/bootloader/node_config.h
+++ b/examples/projects/l0/bootloader/node_config.h
@@ -93,5 +93,10 @@
  *    APP_START_ADDRESS     | 0x0800C800                 | Start address of application with bootloader
  *    APP_END_ADDRESS       | FLASH_BANK1_END=0x0801FFFF | End address of application with bootloader
  ******************************************************************************/
+#ifdef BOOTLOADER_UPDATER
+    #define BOOT_START_ADDRESS 0x800C800
+    #define APP_START_ADDRESS  0x8000000
+    #define APP_END_ADDRESS    0x800BFFF
+#endif
 
 #endif /* _NODE_CONFIG_H_ */
diff --git a/examples/projects/l0/bootloader/platformio.ini b/examples/projects/l0/bootloader/platformio.ini
index a8c26deab..a0f342406 100644
--- a/examples/projects/l0/bootloader/platformio.ini
+++ b/examples/projects/l0/bootloader/platformio.ini
@@ -8,18 +8,47 @@
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
-[env:l0]
+[platformio]
+default_envs = l0
+
+[env]
 platform = ststm32
 board = l0
 framework = stm32cube
 lib_extra_dirs = $PROJECT_DIR/../../../../../
+lib_deps =
+    luos_engine@^2.8.0
+
+[env:l0]
 board_build.ldscript = linker/custom_bootloader_script.ld
 build_unflags = -Os
 build_flags =
     -include node_config.h
     -D BOOTLOADER
     -O1
-debug_build_flags = -O0 -g -ggdb
-lib_deps =
-    luos_engine@^2.8.0
 debug_tool = stlink
+
+[env:l0_updater]
+board_build.ldscript = linker/custom_bootloader_updater_script.ld
+build_unflags = -Os
+build_flags =
+    -include node_config.h
+    -D BOOTLOADER
+    -O1
+    -D BOOTLOADER_UPDATER
+upload_protocol = custom
+upload_flags =
+    -t2
+upload_command = pyluos-bootloader flash $UPLOAD_PORT $UPLOAD_FLAGS -b $SOURCE
+
+[env:l0_new_boot]
+board_build.ldscript = linker/custom_new_bootloader_script.ld
+build_unflags = -Os
+build_flags =
+    -include node_config.h
+    -D BOOTLOADER
+    -O1
+upload_protocol = custom
+upload_flags =
+    -t2
+upload_command = pyluos-bootloader flash $UPLOAD_PORT $UPLOAD_FLAGS -b $SOURCE

From a39b728aeeab42733c403c5f7cea437996a58fdd Mon Sep 17 00:00:00 2001
From: biliouriv <biliouriv@gmail.com>
Date: Mon, 7 Nov 2022 15:27:21 +0100
Subject: [PATCH 05/12] [Bootloader] bootloader updater for NUCLEO-G474RE

---
 .../custom_bootloader_updater_script.ld       | 182 ++++++++++++++++++
 .../NUCLEO-G474RE/bootloader/node_config.h    |   6 +-
 .../NUCLEO-G474RE/bootloader/platformio.ini   |  30 ++-
 3 files changed, 212 insertions(+), 6 deletions(-)
 create mode 100644 examples/projects/NUCLEO-G474RE/bootloader/linker/custom_bootloader_updater_script.ld

diff --git a/examples/projects/NUCLEO-G474RE/bootloader/linker/custom_bootloader_updater_script.ld b/examples/projects/NUCLEO-G474RE/bootloader/linker/custom_bootloader_updater_script.ld
new file mode 100644
index 000000000..6d0fe8bb2
--- /dev/null
+++ b/examples/projects/NUCLEO-G474RE/bootloader/linker/custom_bootloader_updater_script.ld
@@ -0,0 +1,182 @@
+/**
+ ******************************************************************************
+ * @file      LinkerScript.ld
+ * @author    Auto-generated by STM32CubeIDE
+ * @brief     Linker script for STM32G431KBTx Device from STM32G4 series
+ *                      128Kbytes FLASH
+ *                      32Kbytes RAM
+ *
+ *            Set heap size, stack size and stack location according
+ *            to application requirements.
+ *
+ *            Set memory bank area and size if external memory is used
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * 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
+ *
+ ******************************************************************************
+ */
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM);	/* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200;	/* required amount of heap  */
+_Min_Stack_Size = 0x400;	/* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM    (xrw)    : ORIGIN = 0x20000000,   LENGTH = 32K
+  FLASH    (rx)    : ORIGIN = 0x800C800,   LENGTH = 48K
+  SHRD_MEM (rx)    : ORIGIN = 0x0800C000,   LENGTH = 2K
+}
+
+/* Sections */
+SECTIONS
+{
+  /* placing my boot flags section at given address: */
+  .boot_flags :
+  {
+    KEEP(*(.boot_flags)) /* keep my variable even if not referenced */
+  } > SHRD_MEM
+
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { 
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+  
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data : 
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+    
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
diff --git a/examples/projects/NUCLEO-G474RE/bootloader/node_config.h b/examples/projects/NUCLEO-G474RE/bootloader/node_config.h
index c2c242240..114000d6a 100644
--- a/examples/projects/NUCLEO-G474RE/bootloader/node_config.h
+++ b/examples/projects/NUCLEO-G474RE/bootloader/node_config.h
@@ -91,5 +91,9 @@
  *    APP_START_ADDRESS     | 0x0800C800                 | Start address of application with bootloader
  *    APP_END_ADDRESS       | FLASH_END                  | End address of application with bootloader
  ******************************************************************************/
-
+#ifdef BOOTLOADER_UPDATER
+    #define BOOT_START_ADDRESS 0x800C800
+    #define APP_START_ADDRESS  0x8000000
+    #define APP_END_ADDRESS    0x800BFFF
+#endif
 #endif /* _NODE_CONFIG_H_ */
diff --git a/examples/projects/NUCLEO-G474RE/bootloader/platformio.ini b/examples/projects/NUCLEO-G474RE/bootloader/platformio.ini
index 04b39ecc0..69c308bcc 100644
--- a/examples/projects/NUCLEO-G474RE/bootloader/platformio.ini
+++ b/examples/projects/NUCLEO-G474RE/bootloader/platformio.ini
@@ -7,12 +7,20 @@
 ;
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
+[platformio]
+default_envs = nucleo_g474re
 
-[env:nucleo_g474re]
+[env]
 platform = ststm32
 board = nucleo_g474re
 lib_extra_dirs = $PROJECT_DIR/../../../../../
 framework = stm32cube
+lib_deps =
+    luos_engine@^2.8.0
+debug_tool = stlink
+upload_protocol = stlink
+
+[env:nucleo_g474re]
 board_build.ldscript = linker/custom_bootloader_script.ld
 build_unflags = -Os
 build_flags =
@@ -22,7 +30,19 @@ build_flags =
     -DUSE_HAL_DRIVER
     -DUSE_FULL_LL_DRIVER
     -DLUOSHAL=STM32G4
-lib_deps =
-    luos_engine@^2.8.0
-debug_tool = stlink
-upload_protocol = stlink
+
+[env:nucleo_g474re_updater]
+board_build.ldscript = linker/custom_bootloader_updater_script.ld
+build_unflags = -Os
+build_flags =
+    -O1
+    -include node_config.h
+    -D BOOTLOADER
+    -D BOOTLOADER_UPDATER
+    -DUSE_HAL_DRIVER
+    -DUSE_FULL_LL_DRIVER
+    -DLUOSHAL=STM32G4
+upload_protocol = custom
+upload_flags =
+    -t2
+upload_command = pyluos-bootloader flash $UPLOAD_PORT $UPLOAD_FLAGS -b $SOURCE

From cf4522288dbc690cf6018c9cd65abc5127f7b323 Mon Sep 17 00:00:00 2001
From: biliouriv <biliouriv@gmail.com>
Date: Mon, 7 Nov 2022 18:09:45 +0100
Subject: [PATCH 06/12] [Bootloader] bootloader updater for STM32F4-discovery

---
 .../custom_bootloader_updater_script.ld       | 216 ++++++++++++++++++
 .../bootloader/node_config.h                  |   8 +-
 .../bootloader/platformio.ini                 |  26 ++-
 3 files changed, 245 insertions(+), 5 deletions(-)
 create mode 100644 examples/projects/STM32F4-discovery/bootloader/linker/custom_bootloader_updater_script.ld

diff --git a/examples/projects/STM32F4-discovery/bootloader/linker/custom_bootloader_updater_script.ld b/examples/projects/STM32F4-discovery/bootloader/linker/custom_bootloader_updater_script.ld
new file mode 100644
index 000000000..2de846873
--- /dev/null
+++ b/examples/projects/STM32F4-discovery/bootloader/linker/custom_bootloader_updater_script.ld
@@ -0,0 +1,216 @@
+/*
+******************************************************************************
+**
+** @file        : LinkerScript.ld
+**
+** @author      : Auto-generated by STM32CubeIDE
+**
+** @brief       : Linker script for STM32F407VGTx Device from STM32F4 series
+**                      1024Kbytes FLASH
+**                      64Kbytes CCMRAM
+**                      128Kbytes RAM
+**
+**                Set heap size, stack size and stack location according
+**                to application requirements.
+**
+**                Set memory bank area and size if external memory is used
+**
+**  Target      : STMicroelectronics STM32
+**
+**  Distribution: The file is distributed as is, without any warranty
+**                of any kind.
+**
+******************************************************************************
+** @attention
+**
+** <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
+** All rights reserved.</center></h2>
+**
+** 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
+**
+******************************************************************************
+*/
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM); /* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200; /* required amount of heap */
+_Min_Stack_Size = 0x400; /* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  CCMRAM      (xrw)     : ORIGIN = 0x10000000,   LENGTH = 64K
+  RAM         (xrw)     : ORIGIN = 0x20000000,   LENGTH = 128K
+  FLASH       (rx)      : ORIGIN = 0x08010000,   LENGTH = 48K
+  SHRD_MEM  (rw)      : ORIGIN = 0x0800C000,   LENGTH = 16K
+}
+
+/* Sections */
+SECTIONS
+{
+  /* placing my boot flags section at given address: */
+  .boot_flags :
+  {
+    KEEP(*(.boot_flags)) /* keep my variable even if not referenced */
+  } >SHRD_MEM
+
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : {
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+    *(.RamFunc)        /* .RamFunc sections */
+    *(.RamFunc*)       /* .RamFunc* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+
+  } >RAM AT> FLASH
+
+  _siccmram = LOADADDR(.ccmram);
+
+  /* CCM-RAM section
+  *
+  * IMPORTANT NOTE!
+  * If initialized variables will be placed in this section,
+  * the startup code needs to be modified to copy the init-values.
+  */
+  .ccmram :
+  {
+    . = ALIGN(4);
+    _sccmram = .;       /* create a global symbol at ccmram start */
+    *(.ccmram)
+    *(.ccmram*)
+
+    . = ALIGN(4);
+    _eccmram = .;       /* create a global symbol at ccmram end */
+  } >CCMRAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  /* placing my boot flags section at given address: */
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
diff --git a/examples/projects/STM32F4-discovery/bootloader/node_config.h b/examples/projects/STM32F4-discovery/bootloader/node_config.h
index 978f5deaa..c37fdf8be 100644
--- a/examples/projects/STM32F4-discovery/bootloader/node_config.h
+++ b/examples/projects/STM32F4-discovery/bootloader/node_config.h
@@ -96,5 +96,11 @@
  *    APP_START_SECTOR      | FLASH_SECTOR_4             | Start sector of application with bootloader
  *    APP_END_SECTOR        | FLASH_SECTOR_TOTAL - 1     | last sector of application with bootloader
  ******************************************************************************/
-
+#ifdef BOOTLOADER_UPDATER
+    #define BOOT_START_ADDRESS 0x08010000
+    #define APP_START_ADDRESS  0x8000000
+    #define APP_END_ADDRESS    0x0800BFFF
+    #define APP_START_SECTOR   FLASH_SECTOR_0
+    #define APP_END_SECTOR     FLASH_SECTOR_2
+#endif
 #endif /* _NODE_CONFIG_H_ */
diff --git a/examples/projects/STM32F4-discovery/bootloader/platformio.ini b/examples/projects/STM32F4-discovery/bootloader/platformio.ini
index 7ef158d45..86d03fd01 100644
--- a/examples/projects/STM32F4-discovery/bootloader/platformio.ini
+++ b/examples/projects/STM32F4-discovery/bootloader/platformio.ini
@@ -10,12 +10,16 @@
 [platformio]
 default_envs = STM32F4-discovery
 
-[env:STM32F4-discovery]
+[env]
 platform = ststm32
-board_build.ldscript = linker/custom_bootloader_script.ld
 lib_extra_dirs = $PROJECT_DIR/../../../../../
 board = disco_f407vg
 framework = stm32cube
+lib_deps =
+    luos_engine@^2.8.0
+
+[env:STM32F4-discovery]
+board_build.ldscript = linker/custom_bootloader_script.ld
 build_unflags = -Os
 build_flags =
     -DBOOTLOADER
@@ -24,6 +28,20 @@ build_flags =
     -DUSE_HAL_DRIVER
     -DUSE_FULL_LL_DRIVER
     -DLUOSHAL=STM32F4
-lib_deps =
-    luos_engine@^2.8.0
 debug_tool = stlink
+
+[env:STM32F4-discovery_updater]
+board_build.ldscript = linker/custom_bootloader_updater_script.ld
+build_unflags = -Os
+build_flags =
+    -DBOOTLOADER
+    -DBOOTLOADER_UPDATER
+    -include node_config.h
+    -O1
+    -DUSE_HAL_DRIVER
+    -DUSE_FULL_LL_DRIVER
+    -DLUOSHAL=STM32F4
+upload_protocol = custom
+upload_flags =
+    -t2
+upload_command = pyluos-bootloader flash $UPLOAD_PORT $UPLOAD_FLAGS -b $SOURCE

From e57f50cb9635c79592f3e4077d33a2b7267f753d Mon Sep 17 00:00:00 2001
From: biliouriv <biliouriv@gmail.com>
Date: Tue, 8 Nov 2022 12:07:00 +0100
Subject: [PATCH 07/12] [Bootloader] bootloader updater for STM32L4-discovery

---
 .../custom_bootloader_updater_script.ld       | 193 ++++++++++++++++++
 .../bootloader/node_config.h                  |   8 +-
 .../bootloader/platformio.ini                 |  26 ++-
 3 files changed, 223 insertions(+), 4 deletions(-)
 create mode 100644 examples/projects/STM32L4S5_discovery/bootloader/linker/custom_bootloader_updater_script.ld

diff --git a/examples/projects/STM32L4S5_discovery/bootloader/linker/custom_bootloader_updater_script.ld b/examples/projects/STM32L4S5_discovery/bootloader/linker/custom_bootloader_updater_script.ld
new file mode 100644
index 000000000..4964c2837
--- /dev/null
+++ b/examples/projects/STM32L4S5_discovery/bootloader/linker/custom_bootloader_updater_script.ld
@@ -0,0 +1,193 @@
+/*
+******************************************************************************
+**
+** @file        : LinkerScript.ld
+**
+** @author      : Auto-generated by STM32CubeIDE
+**
+** @brief       : Linker script for STM32L4S5VITx Device from STM32L4PLUS series
+**                      2048Kbytes FLASH
+**                      640Kbytes RAM
+**
+**                Set heap size, stack size and stack location according
+**                to application requirements.
+**
+**                Set memory bank area and size if external memory is used
+**
+**  Target      : STMicroelectronics STM32
+**
+**  Distribution: The file is distributed as is, without any warranty
+**                of any kind.
+**
+******************************************************************************
+** @attention
+**
+** <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
+** All rights reserved.</center></h2>
+**
+** 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
+**
+******************************************************************************
+*/
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM); /* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200; /* required amount of heap */
+_Min_Stack_Size = 0x400; /* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM    (xrw)    : ORIGIN = 0x20000000,   LENGTH = 640K
+  FLASH    (rx)    : ORIGIN = 0x800D000,   LENGTH = 48K
+  SHRD_MEM  (rw) : ORIGIN = 0x0800C000,   LENGTH = 4K
+}
+
+/* Sections */
+SECTIONS
+{
+  /* placing my boot flags section at given address: */
+  .boot_flags :
+  {
+    KEEP(*(.boot_flags)) /* keep my variable even if not referenced */
+  } > SHRD_MEM
+
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : {
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+    *(.RamFunc)        /* .RamFunc sections */
+    *(.RamFunc*)       /* .RamFunc* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
diff --git a/examples/projects/STM32L4S5_discovery/bootloader/node_config.h b/examples/projects/STM32L4S5_discovery/bootloader/node_config.h
index a42afcefd..155578137 100644
--- a/examples/projects/STM32L4S5_discovery/bootloader/node_config.h
+++ b/examples/projects/STM32L4S5_discovery/bootloader/node_config.h
@@ -154,6 +154,12 @@
  *    APP_START_ADDRESS     | 0x0800C800                 | Start address of application with bootloader
  *    APP_END_ADDRESS       | FLASH_END                  | End address of application with bootloader
  ******************************************************************************/
-#define APP_START_ADDRESS (uint32_t)0x0800D000
+#ifndef BOOTLOADER_UPDATER
+    #define APP_START_ADDRESS (uint32_t)0x0800D000
+#else
+    #define BOOT_START_ADDRESS (uint32_t)0x0800D000
+    #define APP_START_ADDRESS  (uint32_t)0x08000000
+    #define APP_END_ADDRESS    (uint32_t)0x0800BFFF
+#endif
 
 #endif /* _NODE_CONFIG_H_ */
diff --git a/examples/projects/STM32L4S5_discovery/bootloader/platformio.ini b/examples/projects/STM32L4S5_discovery/bootloader/platformio.ini
index 52c2f10f3..79150f58f 100644
--- a/examples/projects/STM32L4S5_discovery/bootloader/platformio.ini
+++ b/examples/projects/STM32L4S5_discovery/bootloader/platformio.ini
@@ -7,12 +7,18 @@
 ;
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
+[platformio]
+default_envs = disco_l4s5i_iot01a
 
-[env:disco_l4s5i_iot01a]
+[env]
 platform = ststm32
 board = disco_l4s5i_iot01a
 lib_extra_dirs = $PROJECT_DIR/../../../../../
 framework = stm32cube
+lib_deps =
+    luos_engine@^2.8.0
+
+[env:disco_l4s5i_iot01a]
 board_build.ldscript = linker/custom_bootloader_script.ld
 build_unflags = -Os
 build_flags =
@@ -22,8 +28,22 @@ build_flags =
     -DUSE_FULL_LL_DRIVER
     -DLUOSHAL=STM32L4
     -DBOOTLOADER
-lib_deps =
-    luos_engine@^2.8.0
 debug_tool = stlink
 upload_protocol = stlink
 
+[env:disco_l4s5i_iot01a_updater]
+board_build.ldscript = linker/custom_bootloader_updater_script.ld
+build_unflags = -Os
+build_flags =
+    -O1
+    -include node_config.h
+    -DBOOTLOADER
+    -DBOOTLOADER_UPDATER
+    -DUSE_HAL_DRIVER
+    -DUSE_FULL_LL_DRIVER
+    -DLUOSHAL=STM32L4
+upload_protocol = custom
+upload_flags =
+    -t2
+upload_command = pyluos-bootloader flash $UPLOAD_PORT $UPLOAD_FLAGS -b $SOURCE
+

From cb6563bb126f9aef37d4766148b15e991176902a Mon Sep 17 00:00:00 2001
From: biliouriv <biliouriv@gmail.com>
Date: Tue, 8 Nov 2022 14:44:50 +0100
Subject: [PATCH 08/12] [Bootloader] bootloader updater for NUCLEO-F401RE

---
 .../custom_bootloader_updater_script.ld       | 182 ++++++++++++++++++
 .../NUCLEO-F401RE/bootloader/node_config.h    |   9 +-
 .../NUCLEO-F401RE/bootloader/platformio.ini   |  27 ++-
 3 files changed, 212 insertions(+), 6 deletions(-)
 create mode 100644 examples/projects/NUCLEO-F401RE/bootloader/linker/custom_bootloader_updater_script.ld

diff --git a/examples/projects/NUCLEO-F401RE/bootloader/linker/custom_bootloader_updater_script.ld b/examples/projects/NUCLEO-F401RE/bootloader/linker/custom_bootloader_updater_script.ld
new file mode 100644
index 000000000..63e3bc229
--- /dev/null
+++ b/examples/projects/NUCLEO-F401RE/bootloader/linker/custom_bootloader_updater_script.ld
@@ -0,0 +1,182 @@
+/**
+ ******************************************************************************
+ * @file      LinkerScript.ld
+ * @author    Auto-generated by STM32CubeIDE
+ * @brief     Linker script for STM32F401RETx Device from STM32F4 series
+ *                      512Kbytes FLASH
+ *                      96Kbytes RAM
+ *
+ *            Set heap size, stack size and stack location according
+ *            to application requirements.
+ *
+ *            Set memory bank area and size if external memory is used
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * 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
+ *
+ ******************************************************************************
+ */
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM);	/* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200;	/* required amount of heap  */
+_Min_Stack_Size = 0x400;	/* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM    (xrw)     : ORIGIN = 0x20000000,   LENGTH = 96K
+  FLASH    (rx)    : ORIGIN = 0x08010000,   LENGTH = 48K
+  SHRD_MEM  (rw) : ORIGIN = 0x0800C000,   LENGTH = 16K
+}
+
+/* Sections */
+SECTIONS
+{
+  /* placing my boot flags section at given address: */
+  .boot_flags :
+  {
+    KEEP(*(.boot_flags)) /* keep my variable even if not referenced */
+  } > SHRD_MEM
+
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { 
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+  
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data : 
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+    
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
diff --git a/examples/projects/NUCLEO-F401RE/bootloader/node_config.h b/examples/projects/NUCLEO-F401RE/bootloader/node_config.h
index 44ef38e75..c3c3ffdf5 100644
--- a/examples/projects/NUCLEO-F401RE/bootloader/node_config.h
+++ b/examples/projects/NUCLEO-F401RE/bootloader/node_config.h
@@ -46,7 +46,6 @@
  ******************************************************************************/
 
 #define MSG_BUFFER_SIZE 512
-
 /*******************************************************************************
  * LUOS HAL LIBRARY DEFINITION
 *******************************************************************************
@@ -119,5 +118,11 @@
  *    APP_START_SECTOR      | FLASH_SECTOR_4             | Start sector of application with bootloader
  *    APP_END_SECTOR        | FLASH_SECTOR_TOTAL - 1     | last sector of application with bootloader
  ******************************************************************************/
-
+#ifdef BOOTLOADER_UPDATER
+    #define BOOT_START_ADDRESS (uint32_t)0x08010000
+    #define APP_START_ADDRESS  (uint32_t)0x08000000
+    #define APP_END_ADDRESS    (uint32_t)0x0800BFFF
+    #define APP_START_SECTOR   FLASH_SECTOR_0
+    #define APP_END_SECTOR     FLASH_SECTOR_2
+#endif
 #endif /* _NODE_CONFIG_H_ */
diff --git a/examples/projects/NUCLEO-F401RE/bootloader/platformio.ini b/examples/projects/NUCLEO-F401RE/bootloader/platformio.ini
index 5d03d6876..2e53a2b8a 100644
--- a/examples/projects/NUCLEO-F401RE/bootloader/platformio.ini
+++ b/examples/projects/NUCLEO-F401RE/bootloader/platformio.ini
@@ -7,12 +7,18 @@
 ;
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
+[platformio]
+default_envs = nucleo_f401re
 
-[env:nucleo_f401re]
+[env]
 platform = ststm32
 board = nucleo_f401re
 lib_extra_dirs = $PROJECT_DIR/../../../../../
 framework = stm32cube
+lib_deps =
+    luos_engine@^2.8.0
+
+[env:nucleo_f401re]
 board_build.ldscript = linker/custom_bootloader_script.ld
 build_unflags = -Os
 build_flags =
@@ -22,8 +28,21 @@ build_flags =
     -DUSE_HAL_DRIVER
     -DUSE_FULL_LL_DRIVER
     -DLUOSHAL=STM32F4
-debug_build_flags = -O0 -g -ggdb
-lib_deps =
-    luos_engine@^2.8.0
 debug_tool = stlink
 upload_protocol = stlink
+
+[env:nucleo_f401re_updater]
+board_build.ldscript = linker/custom_bootloader_updater_script.ld
+build_unflags = -Os
+build_flags =
+    -O1
+    -include node_config.h
+    -DBOOTLOADER
+    -DBOOTLOADER_UPDATER
+    -DUSE_HAL_DRIVER
+    -DUSE_FULL_LL_DRIVER
+    -DLUOSHAL=STM32F4
+upload_protocol = custom
+upload_flags =
+    -t2
+upload_command = pyluos-bootloader flash $UPLOAD_PORT $UPLOAD_FLAGS -b $SOURCE

From 01c3261004df45a6aa31e61c4287aec97f0c0f2a Mon Sep 17 00:00:00 2001
From: biliouriv <biliouriv@gmail.com>
Date: Tue, 8 Nov 2022 14:46:25 +0100
Subject: [PATCH 09/12] [Bootloader] bootloader updater for NUCLEO-F410RB

---
 .../custom_bootloader_updater_script.ld       | 193 ++++++++++++++++++
 .../NUCLEO-F410RB/bootloader/node_config.h    |   7 +
 .../NUCLEO-F410RB/bootloader/platformio.ini   |  29 ++-
 3 files changed, 224 insertions(+), 5 deletions(-)
 create mode 100644 examples/projects/NUCLEO-F410RB/bootloader/linker/custom_bootloader_updater_script.ld

diff --git a/examples/projects/NUCLEO-F410RB/bootloader/linker/custom_bootloader_updater_script.ld b/examples/projects/NUCLEO-F410RB/bootloader/linker/custom_bootloader_updater_script.ld
new file mode 100644
index 000000000..06dd4b442
--- /dev/null
+++ b/examples/projects/NUCLEO-F410RB/bootloader/linker/custom_bootloader_updater_script.ld
@@ -0,0 +1,193 @@
+/*
+******************************************************************************
+**
+** @file        : LinkerScript.ld
+**
+** @author      : Auto-generated by STM32CubeIDE
+**
+** @brief       : Linker script for STM32F410RBTx Device from STM32F4 series
+**                      128Kbytes FLASH
+**                      32Kbytes RAM
+**
+**                Set heap size, stack size and stack location according
+**                to application requirements.
+**
+**                Set memory bank area and size if external memory is used
+**
+**  Target      : STMicroelectronics STM32
+**
+**  Distribution: The file is distributed as is, without any warranty
+**                of any kind.
+**
+******************************************************************************
+** @attention
+**
+** <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
+** All rights reserved.</center></h2>
+**
+** 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
+**
+******************************************************************************
+*/
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM); /* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200; /* required amount of heap */
+_Min_Stack_Size = 0x400; /* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM    (xrw)     : ORIGIN = 0x20000000,   LENGTH = 32K
+  FLASH    (rx)    : ORIGIN = 0x08010000,   LENGTH = 48K
+  SHRD_MEM  (rw)   : ORIGIN = 0x0800C000,   LENGTH = 2K
+}
+
+/* Sections */
+SECTIONS
+{
+  /* placing my boot flags section at given address: */
+  .boot_flags :
+  {
+    KEEP(*(.boot_flags)) /* keep my variable even if not referenced */
+  } > SHRD_MEM
+
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : {
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+    *(.RamFunc)        /* .RamFunc sections */
+    *(.RamFunc*)       /* .RamFunc* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
diff --git a/examples/projects/NUCLEO-F410RB/bootloader/node_config.h b/examples/projects/NUCLEO-F410RB/bootloader/node_config.h
index 3f862729f..f2c1ff38d 100644
--- a/examples/projects/NUCLEO-F410RB/bootloader/node_config.h
+++ b/examples/projects/NUCLEO-F410RB/bootloader/node_config.h
@@ -120,5 +120,12 @@
  *    APP_START_SECTOR      | FLASH_SECTOR_4             | Start sector of application with bootloader
  *    APP_END_SECTOR        | FLASH_SECTOR_TOTAL - 1     | last sector of application with bootloader
  ******************************************************************************/
+#ifdef BOOTLOADER_UPDATER
+    #define BOOT_START_ADDRESS (uint32_t)0x08010000
+    #define APP_START_ADDRESS  (uint32_t)0x08000000
+    #define APP_END_ADDRESS    (uint32_t)0x0800BFFF
+    #define APP_START_SECTOR   FLASH_SECTOR_0
+    #define APP_END_SECTOR     FLASH_SECTOR_2
+#endif
 
 #endif /* _NODE_CONFIG_H_ */
diff --git a/examples/projects/NUCLEO-F410RB/bootloader/platformio.ini b/examples/projects/NUCLEO-F410RB/bootloader/platformio.ini
index af280dd93..bc78817d5 100644
--- a/examples/projects/NUCLEO-F410RB/bootloader/platformio.ini
+++ b/examples/projects/NUCLEO-F410RB/bootloader/platformio.ini
@@ -7,13 +7,19 @@
 ;
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
+[platformio]
+default_envs = nucleo_f410rb
 
-[env:nucleo_f410rb]
+[env]
 platform = ststm32
 board = nucleo_f410rb
 framework = stm32cube
-board_build.ldscript = linker/custom_bootloader_script.ld
 lib_extra_dirs = $PROJECT_DIR/../../../../../
+lib_deps =
+    luos_engine@^2.8.0
+
+[env:nucleo_f410rb]
+board_build.ldscript = linker/custom_bootloader_script.ld
 build_unflags = -Os
 build_flags =
     -O1
@@ -22,11 +28,24 @@ build_flags =
     -DUSE_HAL_DRIVER
     -DUSE_FULL_LL_DRIVER
     -DLUOSHAL=STM32F4
-debug_build_flags = -O0 -g -ggdb
-lib_deps =
-    luos_engine@^2.8.0
 debug_tool = stlink
 upload_protocol = stlink
 
+[env:nucleo_f410rb_updater]
+board_build.ldscript = linker/custom_bootloader_updater_script.ld
+build_unflags = -Os
+build_flags =
+    -O1
+    -include node_config.h
+    -DBOOTLOADER
+    -DBOOTLOADER_UPDATER
+    -DUSE_HAL_DRIVER
+    -DUSE_FULL_LL_DRIVER
+    -DLUOSHAL=STM32F4
+upload_protocol = custom
+upload_flags =
+    -t2
+upload_command = pyluos-bootloader flash $UPLOAD_PORT $UPLOAD_FLAGS -b $SOURCE
+
 
 

From 027abd4fe0c28eb39794ff385c756edc832da527 Mon Sep 17 00:00:00 2001
From: biliouriv <biliouriv@gmail.com>
Date: Tue, 8 Nov 2022 14:47:43 +0100
Subject: [PATCH 10/12] [Bootloader] bootloader updater for NUCLEO-G431KB

---
 .../custom_bootloader_updater_script.ld       | 182 ++++++++++++++++++
 .../NUCLEO-G431KB/bootloader/node_config.h    |   6 +-
 .../NUCLEO-G431KB/bootloader/platformio.ini   |  27 ++-
 3 files changed, 211 insertions(+), 4 deletions(-)
 create mode 100644 examples/projects/NUCLEO-G431KB/bootloader/linker/custom_bootloader_updater_script.ld

diff --git a/examples/projects/NUCLEO-G431KB/bootloader/linker/custom_bootloader_updater_script.ld b/examples/projects/NUCLEO-G431KB/bootloader/linker/custom_bootloader_updater_script.ld
new file mode 100644
index 000000000..55fe5d763
--- /dev/null
+++ b/examples/projects/NUCLEO-G431KB/bootloader/linker/custom_bootloader_updater_script.ld
@@ -0,0 +1,182 @@
+/**
+ ******************************************************************************
+ * @file      LinkerScript.ld
+ * @author    Auto-generated by STM32CubeIDE
+ * @brief     Linker script for STM32G431KBTx Device from STM32G4 series
+ *                      128Kbytes FLASH
+ *                      32Kbytes RAM
+ *
+ *            Set heap size, stack size and stack location according
+ *            to application requirements.
+ *
+ *            Set memory bank area and size if external memory is used
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * 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
+ *
+ ******************************************************************************
+ */
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM);	/* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200;	/* required amount of heap  */
+_Min_Stack_Size = 0x400;	/* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM    (xrw)    : ORIGIN = 0x20000000,   LENGTH = 32K
+  FLASH    (rx)    : ORIGIN = 0x800C800,   LENGTH = 48K
+  SHRD_MEM (rx)    : ORIGIN = 0x800C000,   LENGTH = 2K
+}
+
+/* Sections */
+SECTIONS
+{
+  /* placing my boot flags section at given address: */
+  .boot_flags :
+  {
+    KEEP(*(.boot_flags)) /* keep my variable even if not referenced */
+  } > SHRD_MEM
+
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : { 
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+  
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+  
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data : 
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+    
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
diff --git a/examples/projects/NUCLEO-G431KB/bootloader/node_config.h b/examples/projects/NUCLEO-G431KB/bootloader/node_config.h
index c2c242240..114000d6a 100644
--- a/examples/projects/NUCLEO-G431KB/bootloader/node_config.h
+++ b/examples/projects/NUCLEO-G431KB/bootloader/node_config.h
@@ -91,5 +91,9 @@
  *    APP_START_ADDRESS     | 0x0800C800                 | Start address of application with bootloader
  *    APP_END_ADDRESS       | FLASH_END                  | End address of application with bootloader
  ******************************************************************************/
-
+#ifdef BOOTLOADER_UPDATER
+    #define BOOT_START_ADDRESS 0x800C800
+    #define APP_START_ADDRESS  0x8000000
+    #define APP_END_ADDRESS    0x800BFFF
+#endif
 #endif /* _NODE_CONFIG_H_ */
diff --git a/examples/projects/NUCLEO-G431KB/bootloader/platformio.ini b/examples/projects/NUCLEO-G431KB/bootloader/platformio.ini
index 46c8386dc..795981f25 100644
--- a/examples/projects/NUCLEO-G431KB/bootloader/platformio.ini
+++ b/examples/projects/NUCLEO-G431KB/bootloader/platformio.ini
@@ -7,12 +7,18 @@
 ;
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
+[platformio]
+default_envs = nucleo_g431kb
 
-[env:nucleo_g431kb]
+[env]
 platform = ststm32
 board = nucleo_g431kb
 lib_extra_dirs = $PROJECT_DIR/../../../../../
 framework = stm32cube
+lib_deps =
+    luos_engine@^2.8.0
+
+[env:nucleo_g431kb]
 board_build.ldscript = linker/custom_bootloader_script.ld
 build_unflags = -Os
 build_flags =
@@ -22,7 +28,22 @@ build_flags =
     -DUSE_HAL_DRIVER
     -DUSE_FULL_LL_DRIVER
     -DLUOSHAL=STM32G4
-lib_deps =
-    luos_engine@^2.8.0
 debug_tool = stlink
 upload_protocol = stlink
+
+[env:nucleo_g431kb_updater]
+board_build.ldscript = linker/custom_bootloader_updater_script.ld
+build_unflags = -Os
+build_flags =
+    -O1
+    -DBOOTLOADER
+    -DBOOTLOADER_UPDATER
+    -include node_config.h
+    -DUSE_HAL_DRIVER
+    -DUSE_FULL_LL_DRIVER
+    -DLUOSHAL=STM32G4
+upload_protocol = custom
+upload_flags =
+    -t2
+upload_command = pyluos-bootloader flash $UPLOAD_PORT $UPLOAD_FLAGS -b $SOURCE
+

From 38e259080a88263e42dbd2d9ccbd8637f3fd3508 Mon Sep 17 00:00:00 2001
From: biliouriv <biliouriv@gmail.com>
Date: Wed, 9 Nov 2022 11:55:24 +0100
Subject: [PATCH 11/12] [Fix] Bootloader NUCLEO-L0 vector in ram rsvd

---
 engine/HAL/STM32L0/luos_hal.c                 | 22 +++++++++++++++++--
 .../linker/custom_Luos_bootloader_script.ld   |  9 +++++++-
 .../linker/custom_Luos_bootloader_script.ld   |  9 +++++++-
 3 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/engine/HAL/STM32L0/luos_hal.c b/engine/HAL/STM32L0/luos_hal.c
index e7ee0ba6f..d655faf69 100644
--- a/engine/HAL/STM32L0/luos_hal.c
+++ b/engine/HAL/STM32L0/luos_hal.c
@@ -17,6 +17,8 @@
 /*******************************************************************************
  * Variables
  ******************************************************************************/
+#define RSVD_SECTION ".rsvd.data,\"aw\",%nobits//"
+#define _RSVD        __attribute__((used, section(RSVD_SECTION)))
 // timestamp variable
 static ll_timestamp_t ll_timestamp;
 /*******************************************************************************
@@ -77,7 +79,23 @@ static void LuosHAL_SystickInit(void)
  ******************************************************************************/
 static void LuosHAL_VectorTableRemap(void)
 {
-    SCB->VTOR = LUOS_VECT_TAB;
+    /* Copy the vector table from the Flash (mapped at the base of the application
+        load address 0x0800C800) to the base address of the SRAM at 0x20000000. */
+    // check if we are at the beginning of flash
+    if (LUOS_VECT_TAB > FLASH_BASE)
+    {
+        static volatile _RSVD uint32_t VectorTable[48];
+
+        for (uint32_t i = 0; i < 48; i++)
+        {
+            VectorTable[i] = *(__IO uint32_t *)(LUOS_VECT_TAB + (i << 2));
+        }
+
+        /* Enable the SYSCFG peripheral clock*/
+        __HAL_RCC_SYSCFG_CLK_ENABLE();
+        /* Remap SRAM at 0x00000000 */
+        __HAL_SYSCFG_REMAPMEMORY_SRAM();
+    }
 }
 /******************************************************************************
  * @brief Luos HAL general systick tick at 1ms
@@ -307,7 +325,7 @@ void LuosHAL_EraseMemory(uint32_t address, uint16_t size)
 
 /******************************************************************************
  * @brief Programm flash memory
- * @param address : Start address 
+ * @param address : Start address
  * @param size :: Data size
  * @param data : Pointer to data
  * @return
diff --git a/examples/projects/NUCLEO-L073RZ/button/linker/custom_Luos_bootloader_script.ld b/examples/projects/NUCLEO-L073RZ/button/linker/custom_Luos_bootloader_script.ld
index 3c8abb26b..52d8cef34 100644
--- a/examples/projects/NUCLEO-L073RZ/button/linker/custom_Luos_bootloader_script.ld
+++ b/examples/projects/NUCLEO-L073RZ/button/linker/custom_Luos_bootloader_script.ld
@@ -45,7 +45,8 @@ _Min_Stack_Size = 0x400; /* required amount of stack */
 /* Memories definition */
 MEMORY
 {
-  RAM    (xrw)    : ORIGIN = 0x20000000,   LENGTH = 20K
+  RAM_RSVD (xrw)  : ORIGIN = 0x20000000,   LENGTH = 1K
+  RAM    (xrw)    : ORIGIN = 0x20000400,   LENGTH = 19K
   FLASH    (rx)    : ORIGIN = 0x800C800,   LENGTH = 142K
 }
 
@@ -174,6 +175,12 @@ SECTIONS
     . = ALIGN(8);
   } >RAM
 
+  .boot_data :
+  {
+    *(.rsvd.data)
+    *(.rsvd.data*)
+  } > RAM_RSVD
+
   /* Remove information from the compiler libraries */
   /DISCARD/ :
   {
diff --git a/examples/projects/NUCLEO-L073RZ/gate_serialcom/linker/custom_Luos_bootloader_script.ld b/examples/projects/NUCLEO-L073RZ/gate_serialcom/linker/custom_Luos_bootloader_script.ld
index 3c8abb26b..52d8cef34 100644
--- a/examples/projects/NUCLEO-L073RZ/gate_serialcom/linker/custom_Luos_bootloader_script.ld
+++ b/examples/projects/NUCLEO-L073RZ/gate_serialcom/linker/custom_Luos_bootloader_script.ld
@@ -45,7 +45,8 @@ _Min_Stack_Size = 0x400; /* required amount of stack */
 /* Memories definition */
 MEMORY
 {
-  RAM    (xrw)    : ORIGIN = 0x20000000,   LENGTH = 20K
+  RAM_RSVD (xrw)  : ORIGIN = 0x20000000,   LENGTH = 1K
+  RAM    (xrw)    : ORIGIN = 0x20000400,   LENGTH = 19K
   FLASH    (rx)    : ORIGIN = 0x800C800,   LENGTH = 142K
 }
 
@@ -174,6 +175,12 @@ SECTIONS
     . = ALIGN(8);
   } >RAM
 
+  .boot_data :
+  {
+    *(.rsvd.data)
+    *(.rsvd.data*)
+  } > RAM_RSVD
+
   /* Remove information from the compiler libraries */
   /DISCARD/ :
   {

From a65111d03e76f4e2cb1428358ea1343f7241714e Mon Sep 17 00:00:00 2001
From: biliouriv <biliouriv@gmail.com>
Date: Wed, 9 Nov 2022 11:57:09 +0100
Subject: [PATCH 12/12] [Bootloader] bootloader updater for NUCLEO-L073RZ

---
 .../custom_bootloader_updater_script.ld       | 200 ++++++++++++++++++
 .../linker/custom_new_bootloader_script.ld    | 200 ++++++++++++++++++
 .../NUCLEO-L073RZ/bootloader/node_config.h    |   6 +-
 .../NUCLEO-L073RZ/bootloader/platformio.ini   |  41 +++-
 4 files changed, 443 insertions(+), 4 deletions(-)
 create mode 100644 examples/projects/NUCLEO-L073RZ/bootloader/linker/custom_bootloader_updater_script.ld
 create mode 100644 examples/projects/NUCLEO-L073RZ/bootloader/linker/custom_new_bootloader_script.ld

diff --git a/examples/projects/NUCLEO-L073RZ/bootloader/linker/custom_bootloader_updater_script.ld b/examples/projects/NUCLEO-L073RZ/bootloader/linker/custom_bootloader_updater_script.ld
new file mode 100644
index 000000000..5cc546675
--- /dev/null
+++ b/examples/projects/NUCLEO-L073RZ/bootloader/linker/custom_bootloader_updater_script.ld
@@ -0,0 +1,200 @@
+/*
+******************************************************************************
+**
+** @file        : LinkerScript.ld
+**
+** @author      : Auto-generated by STM32CubeIDE
+**
+** @brief       : Linker script for STM32L073RZTx Device from STM32L0 series
+**                      192Kbytes FLASH
+**                      20Kbytes RAM
+**
+**                Set heap size, stack size and stack location according
+**                to application requirements.
+**
+**                Set memory bank area and size if external memory is used
+**
+**  Target      : STMicroelectronics STM32
+**
+**  Distribution: The file is distributed as is, without any warranty
+**                of any kind.
+**
+******************************************************************************
+** @attention
+**
+** <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
+** All rights reserved.</center></h2>
+**
+** 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
+**
+******************************************************************************
+*/
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM); /* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200; /* required amount of heap */
+_Min_Stack_Size = 0x400; /* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM_RSVD (xrw)  : ORIGIN = 0x20000000,   LENGTH = 1K
+  RAM    (xrw)    : ORIGIN = 0x20000400,   LENGTH = 19K
+  FLASH    (rx)    : ORIGIN = 0x800C800,   LENGTH = 48K
+  SHRD_MEM  (rw) : ORIGIN = 0x0800C000,   LENGTH = 2K
+}
+
+/* Sections */
+SECTIONS
+{
+  /* placing my boot flags section at given address: */
+  .boot_flags :
+  {
+    KEEP(*(.boot_flags)) /* keep my variable even if not referenced */
+  } > SHRD_MEM
+
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : {
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+    *(.RamFunc)        /* .RamFunc sections */
+    *(.RamFunc*)       /* .RamFunc* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  .boot_data :
+  {
+    *(.rsvd.data)
+    *(.rsvd.data*)
+  } > RAM_RSVD
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
diff --git a/examples/projects/NUCLEO-L073RZ/bootloader/linker/custom_new_bootloader_script.ld b/examples/projects/NUCLEO-L073RZ/bootloader/linker/custom_new_bootloader_script.ld
new file mode 100644
index 000000000..95ca5cec1
--- /dev/null
+++ b/examples/projects/NUCLEO-L073RZ/bootloader/linker/custom_new_bootloader_script.ld
@@ -0,0 +1,200 @@
+/*
+******************************************************************************
+**
+** @file        : LinkerScript.ld
+**
+** @author      : Auto-generated by STM32CubeIDE
+**
+** @brief       : Linker script for STM32L073RZTx Device from STM32L0 series
+**                      192Kbytes FLASH
+**                      20Kbytes RAM
+**
+**                Set heap size, stack size and stack location according
+**                to application requirements.
+**
+**                Set memory bank area and size if external memory is used
+**
+**  Target      : STMicroelectronics STM32
+**
+**  Distribution: The file is distributed as is, without any warranty
+**                of any kind.
+**
+******************************************************************************
+** @attention
+**
+** <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
+** All rights reserved.</center></h2>
+**
+** 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
+**
+******************************************************************************
+*/
+
+/* Entry Point */
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = ORIGIN(RAM) + LENGTH(RAM); /* end of "RAM" Ram type memory */
+
+_Min_Heap_Size = 0x200; /* required amount of heap */
+_Min_Stack_Size = 0x400; /* required amount of stack */
+
+/* Memories definition */
+MEMORY
+{
+  RAM_RSVD (xrw)  : ORIGIN = 0x20000000,   LENGTH = 1K
+  RAM    (xrw)    : ORIGIN = 0x20000400,   LENGTH = 19K
+  FLASH    (rx)    : ORIGIN = 0x8000000,   LENGTH = 48K
+  SHRD_MEM  (rw) : ORIGIN = 0x0800C000,   LENGTH = 2K
+}
+
+/* Sections */
+SECTIONS
+{
+  /* placing my boot flags section at given address: */
+  .boot_flags :
+  {
+    KEEP(*(.boot_flags)) /* keep my variable even if not referenced */
+  } > SHRD_MEM
+
+  /* The startup code into "FLASH" Rom type memory */
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector)) /* Startup code */
+    . = ALIGN(4);
+  } >FLASH
+
+  /* The program code and other data into "FLASH" Rom type memory */
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+    *(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+  } >FLASH
+
+  /* Constant data into "FLASH" Rom type memory */
+  .rodata :
+  {
+    . = ALIGN(4);
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM.extab   : {
+    . = ALIGN(4);
+    *(.ARM.extab* .gnu.linkonce.armextab.*)
+    . = ALIGN(4);
+  } >FLASH
+
+  .ARM : {
+    . = ALIGN(4);
+    __exidx_start = .;
+    *(.ARM.exidx*)
+    __exidx_end = .;
+    . = ALIGN(4);
+  } >FLASH
+
+  .preinit_array     :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .init_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  .fini_array :
+  {
+    . = ALIGN(4);
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(SORT(.fini_array.*)))
+    KEEP (*(.fini_array*))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+    . = ALIGN(4);
+  } >FLASH
+
+  /* Used by the startup to initialize data */
+  _sidata = LOADADDR(.data);
+
+  /* Initialized data sections into "RAM" Ram type memory */
+  .data :
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+    *(.RamFunc)        /* .RamFunc sections */
+    *(.RamFunc*)       /* .RamFunc* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+
+  } >RAM AT> FLASH
+
+  /* Uninitialized data section into "RAM" Ram type memory */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough "RAM" Ram  type memory left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(8);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(8);
+  } >RAM
+
+  .boot_data :
+  {
+    *(.rsvd.data)
+    *(.rsvd.data*)
+  } > RAM_RSVD
+
+  /* Remove information from the compiler libraries */
+  /DISCARD/ :
+  {
+    libc.a ( * )
+    libm.a ( * )
+    libgcc.a ( * )
+  }
+
+  .ARM.attributes 0 : { *(.ARM.attributes) }
+}
diff --git a/examples/projects/NUCLEO-L073RZ/bootloader/node_config.h b/examples/projects/NUCLEO-L073RZ/bootloader/node_config.h
index 5198bceb5..159752726 100644
--- a/examples/projects/NUCLEO-L073RZ/bootloader/node_config.h
+++ b/examples/projects/NUCLEO-L073RZ/bootloader/node_config.h
@@ -92,5 +92,9 @@
  *    APP_START_ADDRESS     | 0x0800C800                 | Start address of application with bootloader
  *    APP_END_ADDRESS       | FLASH_END                  | End address of application with bootloader
  ******************************************************************************/
-
+#ifdef BOOTLOADER_UPDATER
+    #define BOOT_START_ADDRESS (uint32_t)0x0800C800
+    #define APP_START_ADDRESS  (uint32_t)0x08000000
+    #define APP_END_ADDRESS    (uint32_t)0x0800BFFF
+#endif
 #endif /* _NODE_CONFIG_H_ */
diff --git a/examples/projects/NUCLEO-L073RZ/bootloader/platformio.ini b/examples/projects/NUCLEO-L073RZ/bootloader/platformio.ini
index 7bc8cd024..60bc3b3e5 100644
--- a/examples/projects/NUCLEO-L073RZ/bootloader/platformio.ini
+++ b/examples/projects/NUCLEO-L073RZ/bootloader/platformio.ini
@@ -7,12 +7,18 @@
 ;
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
+[platformio]
+default_envs = nucleo_l073rz
 
-[env:nucleo_l073rz]
+[env]
 platform = ststm32
 board = nucleo_l073rz
 lib_extra_dirs = $PROJECT_DIR/../../../../../
 framework = stm32cube
+lib_deps =
+    luos_engine@^2.8.0
+
+[env:nucleo_l073rz]
 board_build.ldscript = linker/custom_bootloader_script.ld
 build_unflags = -Os
 build_flags =
@@ -22,8 +28,37 @@ build_flags =
     -DUSE_FULL_LL_DRIVER
     -DLUOSHAL=STM32L0
     -DBOOTLOADER
-lib_deps =
-    luos_engine@^2.8.0
 debug_tool = stlink
 upload_protocol = stlink
 
+[env:nucleo_l073rz_updater]
+board_build.ldscript = linker/custom_bootloader_updater_script.ld
+build_unflags = -Os
+build_flags =
+    -O1
+    -include node_config.h
+    -DUSE_HAL_DRIVER
+    -DUSE_FULL_LL_DRIVER
+    -DLUOSHAL=STM32L0
+    -DBOOTLOADER
+    -DBOOTLOADER_UPDATER
+upload_protocol = custom
+upload_flags =
+    -t2
+upload_command = pyluos-bootloader flash $UPLOAD_PORT $UPLOAD_FLAGS -b $SOURCE
+
+[env:nucleo_l073rz_new_boot]
+board_build.ldscript = linker/custom_new_bootloader_script.ld
+build_unflags = -Os
+build_flags =
+    -O1
+    -include node_config.h
+    -DUSE_HAL_DRIVER
+    -DUSE_FULL_LL_DRIVER
+    -DLUOSHAL=STM32L0
+    -DBOOTLOADER
+upload_protocol = custom
+upload_flags =
+    -t2
+upload_command = pyluos-bootloader flash $UPLOAD_PORT $UPLOAD_FLAGS -b $SOURCE
+