stm32_program.ld

/*
*****************************************************************************
**

**  File        : stm32_flash.ld
**
**  Abstract    : Linker script for STM32L476ZG Device with
**                1024KByte FLASH, 96KByte 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.
**
**  Swissmicros - ld script for STM32 + QSPI 
**
*****************************************************************************
*/

/* Specify the memory areas */
MEMORY
{
/* FLASH   (rx) : ORIGIN =  0x8000000, LENGTH = 1024K */
/* RAM    (xrw) : ORIGIN = 0x20000000, LENGTH =   96K  */
/* RAM0   (xrw) : ORIGIN = 0x10000000, LENGTH =   32K-256 */
FLASH   (rx) : ORIGIN =  0x8050000, LENGTH =  704K
RAM    (xrw) : ORIGIN = 0x10000000, LENGTH =    8K
QSPI    (rx) : ORIGIN = 0x90000000, LENGTH = 2048K
}

/* Entry Point */
ENTRY(Program_Entry)


/* Define output sections */
SECTIONS
{

  .qspi :
  {
    . = ALIGN(8);
    _qspi_start = .;   /* create a global symbol at qspi start */
    *(.qspi)           /* .qspi sections */
    *(.qspi*)          /* .qspi* sections */
/* ==== Symbols to QSPI - in direct order === */
    *(.rodata.__bid_mod10_18_tbl)
    *(.rodata.__bid_convert_table)
    *(.rodata.bid_log_table_1)
    *(.rodata.bid_log_table_2)
    *(.rodata.bid_decimal128_moduli)
    *(.rodata.bid_exponents_bid64)
    *(.rodata.bid_exponents_binary128)
    *(.rodata.bid_breakpoints_binary128)
    *(.rodata.bid_breakpoints_bid64)
    *(.rodata.bid_multipliers1_binary128)
    *(.rodata.bid_multipliers2_bid64)
    *(.rodata.bid_multipliers1_bid64)
    *(.rodata.bid_multipliers2_binary128)
/* ======================== */
    . = ALIGN(8);
    _qspi_end = .;         /* define a global symbols at end of qspi */
    
  } >QSPI /* AT> FLASH */

  /* Constant data goes into FLASH */
  .rodata :
  {
    KEEP(*(.rodata.prog_info)) /* Program info */
    . = ALIGN(64);
    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
    . = ALIGN(8);
  } >FLASH

 _qspi_init_base = LOADADDR(.qspi);
 _qspi_init_length = SIZEOF(.qspi);

  /* The program code and other data goes into FLASH */
  .text :
  {
    . = ALIGN(8);
    *(.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(8);
    _etext = .;        /* define a global symbols at end of code */
  } >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 */
  _sidata = LOADADDR(.data);

  /* Initialized data sections goes into RAM, load LMA copy after code */
  .data : 
  {
    . = ALIGN(8);
    _sdata = .;        /* create a global symbol at data start */
    *(.data.sdb)       /* SDB at the beginning of the RAM0 */
    *(.data)           /* .data sections */
    *(.data*)          /* .data* sections */

    . = ALIGN(8);
    _edata = .;        /* define a global symbol at data end */
  } >RAM AT> FLASH

  /* Uninitialized data section */
  . = ALIGN(4);
  .bss :
  {
    /* 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 AT> RAM

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

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