STM32

如何调整STM32F4链接描述文件以实现闪存的分区预留？

2019-07-14 18:08发布

站内问答 / STM32/STM8
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我需要为STM32F405VGT6上的虚拟EEPROM仿真保留FLASH：
我需要的页面位于闪存的扇区2和扇区3中，因此不在闪存区域的末尾。所以我需要这样的东西：MEMORY{RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 128KCCMRAM (rw)      : ORIGIN = 0x10000000, LENGTH = 64KFLASH (rx)      : ORIGIN = 0x8000000, LENGTH = 32kEMULATED_EEPROM (rwx) : ORIGIN = 0x8008000 LENGTH=2*16kFLASH (rx)      : ORIGIN = 0x8008000+2*16k, LENGTH = 1024k-(32k+2*16k)}但是这个。不起作用。如何调整链接描述文件以实现闪存的分区预留？
  1. <p> File        : stm32_flash.ld
  2. **
  3. **  Abstract    : Linker script for STM32F405VG Device with
  4. **                1024KByte FLASH, 128KByte RAM
  5. **
  6. </p><p>**                Set heap size, stack size and stack location according
  7. **                to application requirements.
  8. **
  9. **                Set memory bank area and size if external memory is used.
  10. **
  11. **  Target      : STMicroelectronics STM32
  12. **
  13. **  Environment : Atollic TrueSTUDIO(R)
  14. **
  15. **  Distribution: The file is distributed as is, without any warranty
  16. **                of any kind.
  17. **
  18. **  (c)Copyright Atollic AB.
  19. **  You may use this file as-is or modify it according to the needs of your
  20. **  project. This file may only be built (assembled or compiled and linked)
  21. **  using the Atollic TrueSTUDIO(R) product. The use of this file together
  22. **  with other tools than Atollic TrueSTUDIO(R) is not permitted.
  23. **
  24. *****************************************************************************
  25. */

  27. /* Entry Point */
  28. ENTRY(Reset_Handler)

  30. /* Highest address of the user mode stack */
  31. _estack = 0x20020000;    /* end of RAM */
  32. /* Generate a link error if heap and stack don't fit into RAM */
  33. _Min_Heap_Size = 0x200;      /* required amount of heap  */
  34. _Min_Stack_Size = 0x400; /* required amount of stack */

  36. /* Specify the memory areas */
  37. MEMORY
  38. {
  39. RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 128K
  40. CCMRAM (rw)      : ORIGIN = 0x10000000, LENGTH = 64K
  41. FLASH (rx)      : ORIGIN = 0x8000000, LENGTH = 1024K
  42. }

  44. /* Define output sections */
  45. SECTIONS
  46. {
  47.   /* The startup code goes first into FLASH */
  48.   .isr_vector :
  49.   {
  50.     . = ALIGN(4);
  51.     KEEP(*(.isr_vector)) /* Startup code */
  52.     . = ALIGN(4);
  53.   } >FLASH

  55.   /* The program code and other data goes into FLASH */
  56.   .text :
  57.   {
  58.     . = ALIGN(4);
  59.     *(.text)           /* .text sections (code) */
  60.     *(.text*)          /* .text* sections (code) */
  61.     *(.glue_7)         /* glue ARM to thumb code */
  62.     *(.glue_7t)        /* glue thumb to arm code */
  63.     *(.eh_frame)

  65.     KEEP (*(.init))
  66.     KEEP (*(.fini))

  68.     . = ALIGN(4);
  69.     _etext = .;        /* define a global symbols at end of code */
  70.   } >FLASH

  72.   /* Constant data goes into FLASH */
  73.   .rodata :
  74.   {
  75.     . = ALIGN(4);
  76.     *(.rodata)         /* .rodata sections (constants, strings, etc.) */
  77.     *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
  78.     . = ALIGN(4);
  79.   } >FLASH

  81.   .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
  82.   .ARM : {
  83.     __exidx_start = .;
  84.     *(.ARM.exidx*)
  85.     __exidx_end = .;
  86.   } >FLASH

  88.   .preinit_array     :
  89.   {
  90.     PROVIDE_HIDDEN (__preinit_array_start = .);
  91.     KEEP (*(.preinit_array*))
  92.     PROVIDE_HIDDEN (__preinit_array_end = .);
  93.   } >FLASH
  94.   .init_array :
  95.   {
  96.     PROVIDE_HIDDEN (__init_array_start = .);
  97.     KEEP (*(SORT(.init_array.*)))
  98.     KEEP (*(.init_array*))
  99.     PROVIDE_HIDDEN (__init_array_end = .);
  100.   } >FLASH
  101.   .fini_array :
  102.   {
  103.     PROVIDE_HIDDEN (__fini_array_start = .);
  104.     KEEP (*(SORT(.fini_array.*)))
  105.     KEEP (*(.fini_array*))
  106.     PROVIDE_HIDDEN (__fini_array_end = .);
  107.   } >FLASH

  109.   /* used by the startup to initialize data */
  110.   _sidata = LOADADDR(.data);

  112.   /* Initialized data sections goes into RAM, load LMA copy after code */
  113.   .data :
  114.   {
  115.     . = ALIGN(4);
  116.     _sdata = .;        /* create a global symbol at data start */
  117.     *(.data)           /* .data sections */
  118.     *(.data*)          /* .data* sections */

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

  124.   _siccmram = LOADADDR(.ccmram);

  126.   /* CCM-RAM section
  127.   *
  128.   * IMPORTANT NOTE!
  129.   * If initialized variables will be placed in this section,
  130.   * the startup code needs to be modified to copy the init-values.  
  131.   */
  132.   .ccmram :
  133.   {
  134.     . = ALIGN(4);
  135.     _sccmram = .;       /* create a global symbol at ccmram start */
  136.     *(.ccmram)
  137.     *(.ccmram*)

  139.     . = ALIGN(4);
  140.     _eccmram = .;       /* create a global symbol at ccmram end */
  141.   } >CCMRAM AT> FLASH


  144.   /* Uninitialized data section */
  145.   . = ALIGN(4);
  146.   .bss :
  147.   {
  148.     /* This is used by the startup in order to initialize the .bss secion */
  149.     _sbss = .;         /* define a global symbol at bss start */
  150.     __bss_start__ = _sbss;
  151.     *(.bss)
  152.     *(.bss*)
  153.     *(COMMON)

  155.     . = ALIGN(4);
  156.     _ebss = .;         /* define a global symbol at bss end */
  157.     __bss_end__ = _ebss;
  158.   } >RAM

  160.   /* User_heap_stack section, used to check that there is enough RAM left */
  161.   ._user_heap_stack :
  162.   {
  163.     . = ALIGN(4);
  164.     PROVIDE ( end = . );
  165.     PROVIDE ( _end = . );
  166.     . = . + _Min_Heap_Size;
  167.     . = . + _Min_Stack_Size;
  168.     . = ALIGN(4);
  169.   } >RAM



  173.   /* Remove information from the standard libraries */
  174.   /DISCARD/ :
  175.   {
  176.     libc.a ( * )
  177.     libm.a ( * )
  178.     libgcc.a ( * )
  179.   }

  181.   .ARM.attributes 0 : { *(.ARM.attributes) }
  182. }</p>
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1条回答
胡扯123
2019-07-14 22:30
你可以尝试（从未测试过自己）

MEMORY
{
RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 128K
CCMRAM (rw)      : ORIGIN = 0x10000000, LENGTH = 64K
FLASH_1 (rx)      : ORIGIN = 0x8000000, LENGTH = 32k
EMULATED_EEPROM (rwx) : ORIGIN = 0x8008000 LENGTH=2*16k
FLASH (rx)      : ORIGIN = 0x8008000+2*16k, LENGTH = 1024k-(32k+2*16k)
}

  .text2 :  
  {  
    ...  
  } >> FLASH_1

  .isr_vector :
  {
    . = ALIGN(4);
    KEEP(*(.isr_vector)) /* Startup code */
    . = ALIGN(4);
  } >FLASH_1
但是要在text2部分中放置任何内容（例如某些函数），您必须使用它们进行声明  __attribute__ ((section ("text2")))

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