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view Common/CPU1-F429.ld @ 909:6902bb4b6b2e Evo_2_23

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Define state of new GPIO out pins: Some new GPIO pins were initialized but not used. This may cause some random activations e.g. of the red debug LED. To avoid this the output levels are set to inactive levels (e.g. to LED_OFF)
author Ideenmodellierer
date Tue, 15 Oct 2024 19:07:19 +0200
parents 01f40cb1057e
children
line wrap: on
line source

/*****************************************************************************
 * -*- coding: UTF-8 -*-
 *
 * \file   Common/CPU1-F429.ld
 * \brief  Linker Script for CPU1 alias Discovery
 * \author Ac6 workbench, Heinrichs Weikamp, and JD Gascuel
 * \date   2018
 *
 * \details
 *  Linker script for STM32F429IIT6 Device from STM32F4 series
 *  - 192Kbytes RAM
 *  - 2048Kbytes ROM
 *
 *  Set heap size, stack size and stack location according
 *  to application requirements.
 *
 *  Set memory bank area and size if external memory is used.
 *
 * $Id$
 *****************************************************************************
 * \par Copyright (c) 2014-2018 Heinrichs Weikamp gmbh
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *****************************************************************************
 * HISTORY
 *  2017-12-18 jDG: Mix between std AC6 file and chw stm32f429zi_flash.ld settings.
 */

/* Entry Point */
ENTRY(Reset_Handler)

OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
OUTPUT_ARCH(arm)
SEARCH_DIR(.)

/****************************************************************************/
/***************************** Memory Definition ****************************/
MEMORY
{
  ROM_BOOT  (rx) : ORIGIN = 0x08000000, LENGTH = 0x00040000 /* 256K */
    ROM  (rx) : ORIGIN = 0x08040000, LENGTH = 0x00090000 /* 576K */
    UPPER(rx) : ORIGIN = 0x08132000, LENGTH = 0xAE270 /* 713K */
    RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 192K
  CCRAM (rwx) : ORIGIN = 0x10000000, LENGTH = 64K
}

/* Linker file shall be shared between Bootloader, Font and Firmware projects. Not used memory areas to be cut during bin generation */

/* Make sure ROM and UPPER are contiguous, and map 2MB */
/* TODO: At the moment the size of the defined memory will be directly reflected into the file size of resultion bin => Keep small until not used memory may be excluded from build */
/*ASSERT( ORIGIN(UPPER) - ORIGIN(ROM) == LENGTH(ROM), "ROM lower and upper region shall be continuous" )
/*ASSERT( LENGTH(ROM) + LENGTH(UPPER) == 2048K, "ROM lower + upper regions = 2MB" ) */

/* Highest address of the user mode stack */
/*_estack = ORIGIN(RAM) + LENGTH(RAM);*/


_Min_Heap_Size  = 0;      	/* no required heap  (malloc'ed space) */
_Min_Stack_Size = 0x08000; 	/* required 32K of stack */

/* Linker script to place sections and symbol values. Should be used together
 * with other linker script that defines memory regions FLASH and RAM.
 * It references following symbols, which must be defined in code:
 *   Reset_Handler : Entry of reset handler
 * 
 * It defines following symbols, which code can use without definition:
 *   __exidx_start
 *   __exidx_end
 *   __preinit_array_start
 *   __preinit_array_end
 *   __init_array_start
 *   __init_array_end
 *   __fini_array_start
 *   __fini_array_end
 *	 _sbss
 *   __bss_start__
 *	 _ebss
 *   __bss_end__
 *   _edata
 *   end
 *   _end
 *   _estack
 */

/****************************************************************************/
/*************************** Code and Data Sections *************************/
SECTIONS
{
  /******************* NVIC reset and interupt vectors **********************/
 
  .isr_vector 0x08040000 :
  {
  . = ALIGN(4);
    KEEP( *(.isr_vector) ) 
    KEEP(*(.init))
  } >ROM


 .StdLibs 0x08040200:
  {
  . = ALIGN(4);
     *libm.a:*(*)
  } >ROM

  .rodata :
  {
    . = ALIGN(4);
    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
    . = ALIGN(4);
  } >ROM

 /********************** Constant data into ROM memory *********************/


  .ARM.extab   : { 
  	. = ALIGN(4);
  	*(.ARM.extab* .gnu.linkonce.armextab.*)
  	. = ALIGN(4);
  } >ROM
  
  .ARM : {
    . = ALIGN(4);
    __exidx_start = .;
    *(.ARM.exidx*)
    __exidx_end = .;
    . = ALIGN(4);
  } >ROM
  
   .preinit_array     :
  {
    . = ALIGN(4);
    PROVIDE_HIDDEN( __preinit_array_start = . );
    KEEP( *(.preinit_array*) )
    PROVIDE_HIDDEN( __preinit_array_end = . );
    . = ALIGN(4);
  } >ROM
  
  .init_array :
  {
    . = ALIGN(4);
    PROVIDE_HIDDEN( __init_array_start = . );
    KEEP( *(SORT(.init_array.*)) )
    KEEP( *(.init_array*) )
    PROVIDE_HIDDEN( __init_array_end = . );
    . = ALIGN(4);
  } >ROM
  
  .fini_array :
  {
    . = ALIGN(4);
    PROVIDE_HIDDEN( __fini_array_start = . );
    KEEP( *(SORT(.fini_array.*)) )
    KEEP( *(.fini_array*) )
    PROVIDE_HIDDEN( __fini_array_end = . );
    . = ALIGN(4);
  } >ROM
  
    /************* The program code and other data into ROM memory ************/


 .firmware_FirmwareData 0x08050000 : {
 	KEEP( *(.firmware_firmware_data) )
  } >ROM
  
  .font_firmware_data 0x08132000 : {
  	KEEP( *(.font_firmware_data) ) 
  	  
  } >UPPER
  
  
  .text 0x08054000 :
  {
    . = 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)
    . = ALIGN(4);
    _etext = .;        /* define a global symbols at end of code */
  } >ROM
 

 

  
  
  /************* Data and Structures at absolute address in ROM *************/
 
 /* FIXME: this sets the SFirmwareData structure, not the code ... */
 .bootloader_firmware_data 0x0800A000 : {
 	PROVIDE( bootloader_FirmwareData = . );
 	KEEP( *(.bootloader_firmware_data) )
 } > ROM
 	
    /* Define Known Address for Each Font */
    /* Flash Sector 23 is protected (bootloader font + image) => use end of sector 22 */

.lower_fonts 	0x080A0000  : {
	 *(.lower_fonts.image_data_*)
	 
	 *(.lower_fonts.*) 
} > ROM

.lower_directory : {
	*(.lower_font_directory*)
} > ROM

/* TODO: the linker does not seem to work as the one of used for initial bootloader ==> Reconstruct layout to keep it compatible with the first version */
/* TODO: cleanup during next iteration */
  
  /* Put fonts and images in UPPER region */  
  .upper_fonts 	0x08132040  : {
  	__upper_font_data = .;
  	 . = 0x13E; 
  	 *(.upper_fonts.image_data_FontT144_0x0030)
  	 . = 0x02515; 
  	 *(.upper_fonts.image_data_FontT144_0x0031)
  	 . = 0x03469; 
  	 *(.upper_fonts.image_data_FontT144_0x0032)
  	 . = 0x4FDC; 
  	 *(.upper_fonts.image_data_FontT144_0x0033)
  	 . = 0x6862; 
  	 *(.upper_fonts.image_data_FontT144_0x0034)
  	 . = 0x86C2; 
  	 *(.upper_fonts.image_data_FontT144_0x0035)
  	 . = 0x9FB3; 
  	 *(.upper_fonts.image_data_FontT144_0x0036)
  	 . = 0xBB26; 
  	 *(.upper_fonts.image_data_FontT144_0x0037)
  	 . = 0xD845; 
  	 *(.upper_fonts.image_data_FontT144_0x0038)
  	 . = 0xF34D;
  	 *(.upper_fonts.image_data_FontT144_0x0039)
  	 . = 0x10EC0;
  	 *(.upper_fonts.image_data_FontT24_0x0020)
  	 *(.upper_fonts.image_data_FontT24_0x0021)
  	 *(.upper_fonts.image_data_FontT24_0x0022)
  	 *(.upper_fonts.image_data_FontT24_0x0023)
  	 *(.upper_fonts.image_data_FontT24_0x0024)
  	 *(.upper_fonts.image_data_FontT24_0x0025)
  	 *(.upper_fonts.image_data_FontT24_0x0026)
  	 *(.upper_fonts.image_data_FontT24_0x0027)
  	 *(.upper_fonts.image_data_FontT24_0x0028)
  	 *(.upper_fonts.image_data_FontT24_0x0029)
  	 *(.upper_fonts.image_data_FontT24_0x002a)
  	 *(.upper_fonts.image_data_FontT24_0x003f)
  	 *(.upper_fonts.image_data_FontT24_0x002c)
  	 *(.upper_fonts.image_data_FontT24_0x002d)
  	 *(.upper_fonts.image_data_FontT24_0x002e)
  	 *(.upper_fonts.image_data_FontT24_0x002f)
     *(.upper_fonts.image_data_FontT24_0x0030)
  	 *(.upper_fonts.image_data_FontT24_0x0031)
  	 *(.upper_fonts.image_data_FontT24_0x0032)
  	 *(.upper_fonts.image_data_FontT24_0x0033)
  	 *(.upper_fonts.image_data_FontT24_0x0034)
  	 *(.upper_fonts.image_data_FontT24_0x0035)
  	 *(.upper_fonts.image_data_FontT24_0x0036)
  	 *(.upper_fonts.image_data_FontT24_0x0037)
  	 *(.upper_fonts.image_data_FontT24_0x0038)
  	 *(.upper_fonts.image_data_FontT24_0x0039)
  	 *(.upper_fonts.image_data_FontT24_0x003a)
  	 *(.upper_fonts.image_data_FontT24_0x003b)
  	 *(.upper_fonts.image_data_FontT24_0x003c)
  	 *(.upper_fonts.image_data_FontT24_0x003d)
  	 *(.upper_fonts.image_data_FontT24_0x003e)
  	 . = . + 0x8c;
     *(.upper_fonts.image_data_FontT24_0x0040)
  	 *(.upper_fonts.image_data_FontT24_0x0041)
  	 *(.upper_fonts.image_data_FontT24_0x0042)
  	 *(.upper_fonts.image_data_FontT24_0x0043)
  	 *(.upper_fonts.image_data_FontT24_0x0044)
  	 *(.upper_fonts.image_data_FontT24_0x0045)
  	 *(.upper_fonts.image_data_FontT24_0x0046)
  	 *(.upper_fonts.image_data_FontT24_0x0047)
  	 *(.upper_fonts.image_data_FontT24_0x0048)
  	 *(.upper_fonts.image_data_FontT24_0x0049)
  	 *(.upper_fonts.image_data_FontT24_0x004a)
  	 *(.upper_fonts.image_data_FontT24_0x004b)
  	 *(.upper_fonts.image_data_FontT24_0x004c)
  	 *(.upper_fonts.image_data_FontT24_0x004d)
  	 *(.upper_fonts.image_data_FontT24_0x004e)  	
  	 *(.upper_fonts.image_data_FontT24_0x004f)   
     *(.upper_fonts.image_data_FontT24_0x0050)
  	 *(.upper_fonts.image_data_FontT24_0x0051)
  	 *(.upper_fonts.image_data_FontT24_0x0052)
  	 *(.upper_fonts.image_data_FontT24_0x0053)
  	 *(.upper_fonts.image_data_FontT24_0x0054)
  	 *(.upper_fonts.image_data_FontT24_0x0055)
  	 *(.upper_fonts.image_data_FontT24_0x0056)
  	 *(.upper_fonts.image_data_FontT24_0x0057)
  	 *(.upper_fonts.image_data_FontT24_0x0058)
  	 *(.upper_fonts.image_data_FontT24_0x0059)
  	 *(.upper_fonts.image_data_FontT24_0x005a)
  	 *(.upper_fonts.image_data_FontT24_0x005b)
  	 *(.upper_fonts.image_data_FontT24_0x005c)
  	 *(.upper_fonts.image_data_FontT24_0x005d)
  	 *(.upper_fonts.image_data_FontT24_0x005e)  	
  	 *(.upper_fonts.image_data_FontT24_0x005f)    
  	 *(.upper_fonts.image_data_FontT24_0x0060)
  	 *(.upper_fonts.image_data_FontT24_0x0061)
  	 *(.upper_fonts.image_data_FontT24_0x0062)
  	 *(.upper_fonts.image_data_FontT24_0x0063)
  	 . = . + 0x1c;
  	 *(.upper_fonts.image_data_FontT24_0x0064)
  	 *(.upper_fonts.image_data_FontT24_0x0065)
  	 *(.upper_fonts.image_data_FontT24_0x0066)
  	 *(.upper_fonts.image_data_FontT24_0x0067)
  	 *(.upper_fonts.image_data_FontT24_0x0068)
  	 *(.upper_fonts.image_data_FontT24_0x0069)
  	 *(.upper_fonts.image_data_FontT24_0x006a)
  	 *(.upper_fonts.image_data_FontT24_0x006b)
  	 *(.upper_fonts.image_data_FontT24_0x006c)
  	 *(.upper_fonts.image_data_FontT24_0x006d)
  	 *(.upper_fonts.image_data_FontT24_0x006e)  	
  	 *(.upper_fonts.image_data_FontT24_0x006f)  	 
  	 *(.upper_fonts.image_data_FontT24_0x0070)
  	 *(.upper_fonts.image_data_FontT24_0x0071)
  	 *(.upper_fonts.image_data_FontT24_0x0072)
  	 *(.upper_fonts.image_data_FontT24_0x0073)
  	 *(.upper_fonts.image_data_FontT24_0x0074)
  	 *(.upper_fonts.image_data_FontT24_0x0075)
  	 *(.upper_fonts.image_data_FontT24_0x0076)
  	 *(.upper_fonts.image_data_FontT24_0x0077)
  	 *(.upper_fonts.image_data_FontT24_0x0078)
  	 *(.upper_fonts.image_data_FontT24_0x0079)
  	 *(.upper_fonts.image_data_FontT24_0x007a)
  	 *(.upper_fonts.image_data_FontT24_0x007b)
  	 *(.upper_fonts.image_data_FontT24_0x007c)
  	 . = . + 0x1c;
  	 *(.upper_fonts.image_data_FontT24_0x007d)
  	 *(.upper_fonts.image_data_FontT24_0x007e)  	
  	 *(.upper_fonts.image_data_FontT24_0x00a1)
  	 *(.upper_fonts.image_data_FontT24_0x00bf)    
  	 *(.upper_fonts.image_data_FontT24_0x00c1)
  	 *(.upper_fonts.image_data_FontT24_0x00c4)  
  	 *(.upper_fonts.image_data_FontT24_0x00c6) 
  	 *(.upper_fonts.image_data_FontT24_0x00c7)
  	 *(.upper_fonts.image_data_FontT24_0x00c9)
  	 *(.upper_fonts.image_data_FontT24_0x00cd)
  	 *(.upper_fonts.image_data_FontT24_0x00d1)
  	 *(.upper_fonts.image_data_FontT24_0x00d3)
  	 *(.upper_fonts.image_data_FontT24_0x00d6)
  	 *(.upper_fonts.image_data_FontT24_0x00da)
  	 *(.upper_fonts.image_data_FontT24_0x00dc)
  	 *(.upper_fonts.image_data_FontT24_0x00df) 
  	 *(.upper_fonts.image_data_FontT24_0x00e0)
  	 *(.upper_fonts.image_data_FontT24_0x00e1)
  	 *(.upper_fonts.image_data_FontT24_0x00e2)
  	 *(.upper_fonts.image_data_FontT24_0x00e4)
  	 *(.upper_fonts.image_data_FontT24_0x00e6)
  	 *(.upper_fonts.image_data_FontT24_0x00e7)
  	 *(.upper_fonts.image_data_FontT24_0x00e8)
  	 *(.upper_fonts.image_data_FontT24_0x00e9)         
  	 *(.upper_fonts.image_data_FontT24_0x00ec)
  	 *(.upper_fonts.image_data_FontT24_0x00ed)
  	 *(.upper_fonts.image_data_FontT24_0x00f0)
  	 *(.upper_fonts.image_data_FontT24_0x00f1)
  	 *(.upper_fonts.image_data_FontT24_0x00f2)
  	 *(.upper_fonts.image_data_FontT24_0x00f3)
  	 *(.upper_fonts.image_data_FontT24_0x00f6)
  	 *(.upper_fonts.image_data_FontT24_0x00f9)
  	 *(.upper_fonts.image_data_FontT24_0x00fa)
  	 *(.upper_fonts.image_data_FontT24_0x00fc)         
  	 *(.upper_fonts.image_data_FontT24_0x00ff)
  	 *(.upper_fonts.image_data_FontT24_0x0152)
  	 *(.upper_fonts.image_data_FontT24_0x0153)
  	 *(.upper_fonts.image_data_FontT24_0x0178)
  	 *(.upper_fonts.image_data_FontT24_0x002b)
  	 . =  . + 0x1d642;
  	  *(.upper_images.image_data_ostc_fuer_Tauchcomputer_240px)
	 *(.upper_fonts.image_data_FontT84_0x002e)
	  . =  . + 0x9f;
	 *(.upper_fonts.image_data_FontT84_0x0030)
	  . =  . + 0x0d;
	 *(.upper_fonts.image_data_FontT84_0x0031)
	  . =  . + 0xaa;
	 *(.upper_fonts.image_data_FontT84_0x0032)
	  . =  . + 0x7b;
	 *(.upper_fonts.image_data_FontT84_0x0033)
	  . =  . + 0x38;
	 *(.upper_fonts.image_data_FontT84_0x0034)
	  . =  . + 0x7f;
	 *(.upper_fonts.image_data_FontT84_0x0035)
	  . =  . + 0x77;
	 *(.upper_fonts.image_data_FontT84_0x0036)
	  . =  . + 0x7b;
	 *(.upper_fonts.image_data_FontT84_0x0037)
	 . =  . + 0x0d;
	 *(.upper_fonts.image_data_FontT84_0x0038)
	 . =  . + 0x2b;
	 *(.upper_fonts.image_data_FontT84_0x0039)
	 . =  . + 0xe8;
  	 *(.upper_fonts.image_data_FontT54_0x0022)
  	 *(.upper_fonts.image_data_FontT54_0x0025)
  	 . =  . + 0x112;
  	 *(.upper_fonts.image_data_FontT54_0x0027)
  	 . =  . + 0xd8;
  	 *(.upper_fonts.image_data_FontT54_0x002a)
  	 . =  . + 0x133;
     *(.upper_fonts.image_data_FontT54_0x002d)
  	 . =  . + 0x1d7;
  	 *(.upper_fonts.image_data_FontT54_0x002e)
  	 . =  . + 0x17b;
  	 *(.upper_fonts.image_data_FontT54_0x002f)
  	 . =  . + 0x02;
  	 *(.upper_fonts.image_data_FontT54_0x0030)
  	 . =  . + 0x0ba;
  	 *(.upper_fonts.image_data_FontT54_0x0031)
  	 . =  . + 0x27d;
  	 *(.upper_fonts.image_data_FontT54_0x0032)
  	 . =  . + 0xe3;
  	 *(.upper_fonts.image_data_FontT54_0x0033)
  	 . =  . + 0x35;
  	 *(.upper_fonts.image_data_FontT54_0x0034)
  	 . =  . + 0x68;
  	 *(.upper_fonts.image_data_FontT54_0x0035)
  	 . =  . + 0x35;
  	 *(.upper_fonts.image_data_FontT54_0x0036)
  	 . =  . + 0xba;
  	 *(.upper_fonts.image_data_FontT54_0x0037)
  	 . =  . + 0x191;
  	 *(.upper_fonts.image_data_FontT54_0x0038)
  	 . =  . + 0xe3;
  	 *(.upper_fonts.image_data_FontT54_0x0039)
  	 . =  . + 0xe3;
  	 *(.upper_fonts.image_data_FontT54_0x003a)
  	 . =  . + 0x7b;
  	 *(.upper_fonts.image_data_FontT54_0x0043)
  	 . =  . + 0x3b;
  	 *(.upper_fonts.image_data_FontT54_0x006c)
  	 . =  . + 0x2d;
  	 *(.upper_fonts.image_data_FontT54_0x006d)
  	 . =  . + 0x94;
  	 *(.upper_fonts.image_data_FontT54_0x00ba)
  	 . =  . + 0x0a;
  	 
  	 *(.upper_fonts.image_data_FontT105_0x002*)
  	 *(.upper_fonts.image_data_FontT105_0x003*)
  	 *(.upper_fonts.image_data_FontT105_0x0043)
  	 . =  . + 0x17c8;
  	 *(.upper_fonts.image_data_FontT105_0x007c)
  	 *(.upper_fonts.image_data_FontT105_0x00ba)
  	 *(.upper_fonts.image_data_FontT105_54_0x006d)
  	 
	 *(.upper_fonts.image_data_FontT54_0x0068)
	 . =  . + 0x1195;
	 
	 *(.upper_fonts.image_data_FontT42_0x00b0)
	 *(.upper_fonts.image_data_FontT42_0x0020)
	  . =  . + 0x23;
	 *(.upper_fonts.image_data_FontT42_0x002*)
	 *(.upper_fonts.image_data_FontT42_0x003*)
	 *(.upper_fonts.image_data_FontT42_0x004*)
	 *(.upper_fonts.image_data_FontT42_0x005*)
	 . =  . + 0x420;
	 *(.upper_fonts.image_data_FontT42_0x006*)
	 *(.upper_fonts.image_data_FontT42_0x0070)
	 *(.upper_fonts.image_data_FontT42_0x0071)
	 *(.upper_fonts.image_data_FontT42_0x0072)
	 *(.upper_fonts.image_data_FontT42_0x0073)
	 *(.upper_fonts.image_data_FontT42_0x0074)
	 *(.upper_fonts.image_data_FontT42_0x0075)
	 *(.upper_fonts.image_data_FontT42_0x0076)
	 *(.upper_fonts.image_data_FontT42_0x0077)
	 *(.upper_fonts.image_data_FontT42_0x0078)
	 *(.upper_fonts.image_data_FontT42_0x0079)
	 . =  . + 0x12c0;
  	 *(.upper_fonts.image_data_FontT42_*)
  	 *(.upper_fonts.image_data_T54addon_0x002b_PLUS*)
  	 *(.upper_fonts.image_data_T54addon_0x0040_AT*)
  	 *(.upper_fonts.image_data_FontT48addon*)
  	 *(.upper_fonts.image_data_FontT24plus_0x00fb*)
  	 *(.upper_fonts.image_data_FontT24plus_0x00fd*)
  	 *(.upper_fonts.image_data_FontT48_*) 	 
  	 *(.upper_fonts.image_data_awe48_*)
  
/* moving of fonts from lower to upper */  	 
  	 
	 *(.upper_fonts.*) 
	 
  	__upper_font_data_end = .;
  } >UPPER

 

  .upper_directory 0x081DEF00 : {
      __font_directory = .;
	*(.upper_font_directory.Awe48)
	*(.upper_font_directory.FontT24)
	*(.upper_font_directory.FontT42)
	*(.upper_font_directory.FontT48)
	*(.upper_font_directory.FontT54)
	*(.upper_font_directory.FontT84)
	*(.upper_font_directory.FontT105)
	*(.upper_font_directory.FontT144)
	*(.upper_font_directory.Batt24*)
		
	__font_directory_end = .;
  	LONG( -1 );	/* Magic End Marker */

  } >UPPER  
  

  
  
  /* Used by the startup to initialize data */
_sidata = LOADADDR(.data);

  /************ Initialized Data Sections into RAM & ROM Memory **************/
  .data : 
  {
    . = ALIGN(4);
    
    _sdata = .;        /* create a global symbol at data start */
    *(.data)           /* .data sections */
    *(.data*)          /* .data* sections */
	*(vtable)

    . = ALIGN(4);
    _edata = .;        /* define a global symbol at data end */
  } >RAM AT>ROM
  
 

  /*************** Uninitialized Data Section into RAM Memory ****************/
  .bss :
  {
	. = ALIGN(4);
    
    /* This is used by the startup in order to initialize the .bss secion */
    _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 ****************************/
  /* just to check that there is enough RAM left */
  ._user_heap_stack :
  {
    . = ALIGN(8);
    PROVIDE ( end = . );
    PROVIDE ( _end = . );
    PROVIDE ( __end__ = . );
    . = . + _Min_Heap_Size;
    . = . + _Min_Stack_Size;
    . = ALIGN(8);
    _estack = .;
  } >RAM

  /* Remove information from the compiler libraries */
  /DISCARD/ :
  {
    libc.a ( * )
    libm.a ( * )
    libgcc.a ( * )
  }

  .ARM.attributes 0 : { *(.ARM.attributes) }
}