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34 mjames 1 
/*
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*****************************************************************************
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**
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**  File        : stm32_flash.ld
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**
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**  Abstract    : Linker script for STM32L152RE Device with
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**                512KByte FLASH, 80KByte RAM
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**
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**                Set heap size, stack size and stack location according
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**                to application requirements.
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**
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**                Set memory bank area and size if external memory is used.
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**
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**  Target      : STMicroelectronics STM32
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**
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**  Environment : Atollic TrueSTUDIO(R)
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**
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**  Distribution: The file is distributed as is, without any warranty
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**                of any kind.
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**
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**  (c)Copyright Atollic AB.
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**  You may use this file as-is or modify it according to the needs of your
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**  project. This file may only be built (assembled or compiled and linked)
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**  using the Atollic TrueSTUDIO(R) product. The use of this file together
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**  with other tools than Atollic TrueSTUDIO(R) is not permitted.
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**
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*****************************************************************************
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*/
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/* Entry Point */
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ENTRY(Reset_Handler)
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/* Highest address of the user mode stack */
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_estack = 0x20014000;    /* end of RAM */
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/* Generate a link error if heap and stack don't fit into RAM */
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_Min_Heap_Size = 0x200;      /* required amount of heap  */
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_Min_Stack_Size = 0x400; /* required amount of stack */
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/* Specify the memory areas */
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MEMORY
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{
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FLASH (rx)      : ORIGIN = 0x8000000, LENGTH = 512K
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RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 80K
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NVRAM (rx)     : ORIGIN = 0x08080000, LENGTH = 4K
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}
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/* Define output sections */
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SECTIONS
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{
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  /* The startup code goes first into FLASH */
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  .isr_vector :
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  {
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    . = ALIGN(4);
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    KEEP(*(.isr_vector)) /* Startup code */
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    . = ALIGN(4);
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  } >FLASH
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  /* The program code and other data goes into FLASH */
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  .text :
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  {
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    . = ALIGN(4);
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    *(.text)           /* .text sections (code) */
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    *(.text*)          /* .text* sections (code) */
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    *(.glue_7)         /* glue arm to thumb code */
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    *(.glue_7t)        /* glue thumb to arm code */
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    *(.eh_frame)
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    KEEP (*(.init))
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    KEEP (*(.fini))
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    . = ALIGN(4);
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    _etext = .;        /* define a global symbols at end of code */
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  } >FLASH
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  /* Constant data goes into FLASH */
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  .rodata :
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  {
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    . = ALIGN(4);
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    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
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    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
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    . = ALIGN(4);
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  } >FLASH
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  .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
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  .ARM : {
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    __exidx_start = .;
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    *(.ARM.exidx*)
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    __exidx_end = .;
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  } >FLASH
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  .preinit_array     :
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  {
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    PROVIDE_HIDDEN (__preinit_array_start = .);
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    KEEP (*(.preinit_array*))
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    PROVIDE_HIDDEN (__preinit_array_end = .);
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  } >FLASH
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  .init_array :
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  {
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    PROVIDE_HIDDEN (__init_array_start = .);
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    KEEP (*(SORT(.init_array.*)))
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    KEEP (*(.init_array*))
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    PROVIDE_HIDDEN (__init_array_end = .);
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  } >FLASH
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  .fini_array :
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  {
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    PROVIDE_HIDDEN (__fini_array_start = .);
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    KEEP (*(SORT(.fini_array.*)))
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    KEEP (*(.fini_array*))
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    PROVIDE_HIDDEN (__fini_array_end = .);
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  } >FLASH
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  /* used by the startup to initialize data */
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  _sidata = LOADADDR(.data);
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  /* Initialized data sections goes into RAM, load LMA copy after code */
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  .data :
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  {
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    . = ALIGN(4);
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    _sdata = .;        /* create a global symbol at data start */
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    *(.data)           /* .data sections */
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    *(.data*)          /* .data* sections */
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    . = ALIGN(4);
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    _edata = .;        /* define a global symbol at data end */
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  } >RAM AT> FLASH
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  /* Uninitialized data section */
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  . = ALIGN(4);
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  .bss :
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  {
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    /* This is used by the startup in order to initialize the .bss secion */
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    _sbss = .;         /* define a global symbol at bss start */
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    __bss_start__ = _sbss;
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    *(.bss)
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    *(.bss*)
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    *(COMMON)
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    . = ALIGN(4);
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    _ebss = .;         /* define a global symbol at bss end */
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    __bss_end__ = _ebss;
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  } >RAM
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  /* User_heap_stack section, used to check that there is enough RAM left */
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  ._user_heap_stack :
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  {
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    . = ALIGN(4);
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    PROVIDE ( end = . );
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    PROVIDE ( _end = . );
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    . = . + _Min_Heap_Size;
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    . = . + _Min_Stack_Size;
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    . = ALIGN(4);
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  } >RAM
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  /* Remove information from the standard libraries */
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  /DISCARD/ :
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  {
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    libc.a ( * )
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    libm.a ( * )
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    libgcc.a ( * )
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  }
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 /* NVRAM image section : nothing gets stored here but the addresses are set up */
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    .nvram_data (NOLOAD) :
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   {
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   _nvr_base = .;
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    KEEP ( *(.NVRAM_Data)) /* any __attribute__((section(".NVRAM_Data"))) section info to be put in here  */
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   } >NVRAM
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   PROVIDE ( NVRAM_Base  = _nvr_base );
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  .ARM.attributes 0 : { *(.ARM.attributes) }
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}
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