Update linker script

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

variants/NUCLEO_L432KC/ldscript.ld

@@ -1,61 +1,49 @@
-/**
-  ******************************************************************************
-  * @file    STM32L476RG_FLASH.h
-  * @author  WI6LABS
-  * @version V1.0.0
-  * @date    15-February-2016
-  * @brief   Linker script for STM32L476RG Device with
-  *          256KByte FLASH, 32KByte 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) 2016 STMicroelectronics</center></h2>
-  *
-  * Redistribution and use in source and binary forms, with or without modification,
-  * are permitted provided that the following conditions are met:
-  *   1. Redistributions of source code must retain the above copyright notice,
-  *      this list of conditions and the following disclaimer.
-  *   2. Redistributions in binary form must reproduce the above copyright notice,
-  *      this list of conditions and the following disclaimer in the documentation
-  *      and/or other materials provided with the distribution.
-  *   3. Neither the name of STMicroelectronics nor the names of its contributors
-  *      may be used to endorse or promote products derived from this software
-  *      without specific prior written permission.
-  *
-  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-  *
-  ******************************************************************************
-  */
+/*
+*****************************************************************************
+**
+
+**  File        : LinkerScript.ld
+**
+**  Abstract    : Linker script for STM32L432KCUx Device with
+**                256KByte FLASH, 64KByte 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.
+**
+**  (c)Copyright Ac6.
+**  You may use this file as-is or modify it according to the needs of your
+**  project. Distribution of this file (unmodified or modified) is not
+**  permitted. Ac6 permit registered System Workbench for MCU users the
+**  rights to distribute the assembled, compiled & linked contents of this
+**  file as part of an application binary file, provided that it is built
+**  using the System Workbench for MCU toolchain.
+**
+*****************************************************************************
+*/
 
 /* Entry Point */
 ENTRY(Reset_Handler)
 
 /* Highest address of the user mode stack */
-_estack = 0x20017FFF;    /* end of RAM */
+_estack = 0x2000c000;    /* end of RAM */
 /* Generate a link error if heap and stack don't fit into RAM */
-_Min_Heap_Size = 0x200;;      /* required amount of heap  */
-_Min_Stack_Size = 0x400;; /* required amount of stack */
+_Min_Heap_Size = 0x200;      /* required amount of heap  */
+_Min_Stack_Size = 0x400; /* required amount of stack */
 
 /* Specify the memory areas */
 MEMORY
 {
-FLASH (rx)      : ORIGIN = 0x8000000, LENGTH = 1024K
-RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 96K
+FLASH (rx)      : ORIGIN = 0x08000000, LENGTH = 256K
+RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 48K
+SRAM2 (rw)      : ORIGIN = 0x10000000, LENGTH = 16K
 }
 
 /* Define output sections */
@@ -64,15 +52,15 @@ SECTIONS
   /* The startup code goes first into FLASH */
   .isr_vector :
   {
-    . = ALIGN(4);
+    . = ALIGN(8);
     KEEP(*(.isr_vector)) /* Startup code */
-    . = ALIGN(4);
+    . = ALIGN(8);
   } >FLASH
 
   /* The program code and other data goes into FLASH */
   .text :
   {
-    . = ALIGN(4);
+    . = ALIGN(8);
     *(.text)           /* .text sections (code) */
     *(.text*)          /* .text* sections (code) */
     *(.glue_7)         /* glue arm to thumb code */
@@ -82,45 +70,59 @@ SECTIONS
     KEEP (*(.init))
     KEEP (*(.fini))
 
-    . = ALIGN(4);
+    . = ALIGN(8);
     _etext = .;        /* define a global symbols at end of code */
   } >FLASH
 
   /* Constant data goes into FLASH */
-  .rodata ALIGN(4) :
+  .rodata :
   {
-    . = ALIGN(4);
+    . = ALIGN(8);
     *(.rodata)         /* .rodata sections (constants, strings, etc.) */
     *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
-    . = ALIGN(4);
+    . = ALIGN(8);
   } >FLASH
 
-  .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
+  .ARM.extab   :
+  {
+  . = ALIGN(8);
+  *(.ARM.extab* .gnu.linkonce.armextab.*)
+  . = ALIGN(8);
+  } >FLASH
   .ARM : {
+	. = ALIGN(8);
     __exidx_start = .;
     *(.ARM.exidx*)
     __exidx_end = .;
+	. = ALIGN(8);
   } >FLASH
 
   .preinit_array     :
   {
+	. = ALIGN(8);
     PROVIDE_HIDDEN (__preinit_array_start = .);
     KEEP (*(.preinit_array*))
     PROVIDE_HIDDEN (__preinit_array_end = .);
+	. = ALIGN(8);
   } >FLASH
+
   .init_array :
   {
+	. = ALIGN(8);
     PROVIDE_HIDDEN (__init_array_start = .);
     KEEP (*(SORT(.init_array.*)))
     KEEP (*(.init_array*))
     PROVIDE_HIDDEN (__init_array_end = .);
+	. = ALIGN(8);
   } >FLASH
   .fini_array :
   {
+	. = ALIGN(8);
     PROVIDE_HIDDEN (__fini_array_start = .);
     KEEP (*(SORT(.fini_array.*)))
     KEEP (*(.fini_array*))
     PROVIDE_HIDDEN (__fini_array_end = .);
+	. = ALIGN(8);
   } >FLASH
 
   /* used by the startup to initialize data */
@@ -129,15 +131,34 @@ SECTIONS
   /* Initialized data sections goes into RAM, load LMA copy after code */
   .data :
   {
-    . = ALIGN(4);
+    . = ALIGN(8);
     _sdata = .;        /* create a global symbol at data start */
     *(.data)           /* .data sections */
     *(.data*)          /* .data* sections */
 
-    . = ALIGN(4);
+    . = ALIGN(8);
     _edata = .;        /* define a global symbol at data end */
   } >RAM AT> FLASH
 
+  _sisram2 = LOADADDR(.sram2);
+
+  /* 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.
+  */
+  .sram2 :
+  {
+    . = ALIGN(8);
+    _ssram2 = .;       /* create a global symbol at sram2 start */
+    *(.sram2)
+    *(.sram2*)
+
+    . = ALIGN(8);
+    _esram2 = .;       /* create a global symbol at sram2 end */
+  } >SRAM2 AT> FLASH
+
 
   /* Uninitialized data section */
   . = ALIGN(4);
@@ -158,12 +179,12 @@ SECTIONS
   /* User_heap_stack section, used to check that there is enough RAM left */
   ._user_heap_stack :
   {
-    . = ALIGN(4);
+    . = ALIGN(8);
     PROVIDE ( end = . );
     PROVIDE ( _end = . );
     . = . + _Min_Heap_Size;
     . = . + _Min_Stack_Size;
-    . = ALIGN(4);
+    . = ALIGN(8);
   } >RAM