tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4XX/TOOLCHAIN_GCC_ARM/STM32F407.ld

   1 /* Linker script for STM32F407 */
   2
   3 /* Linker script to configure memory regions. */
   4 MEMORY
   5 {
   6   FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 1024K
   7   CCM (rwx) : ORIGIN = 0x10000000, LENGTH = 64K
   8   RAM (rwx) : ORIGIN = 0x20000188, LENGTH = 0x1FE78
   9 }
  10
  11 /* Linker script to place sections and symbol values. Should be used together
  12  * with other linker script that defines memory regions FLASH and RAM.
  13  * It references following symbols, which must be defined in code:
  14  *   Reset_Handler : Entry of reset handler
  15  *
  16  * It defines following symbols, which code can use without definition:
  17  *   __exidx_start
  18  *   __exidx_end
  19  *   __etext
  20  *   __data_start__
  21  *   __preinit_array_start
  22  *   __preinit_array_end
  23  *   __init_array_start
  24  *   __init_array_end
  25  *   __fini_array_start
  26  *   __fini_array_end
  27  *   __data_end__
  28  *   __bss_start__
  29  *   __bss_end__
  30  *   __end__
  31  *   end
  32  *   __HeapLimit
  33  *   __StackLimit
  34  *   __StackTop
  35  *   __stack
  36  */
  37 ENTRY(Reset_Handler)
  38
  39 SECTIONS
  40 {
  41     .text :
  42     {
  43         KEEP(*(.isr_vector))
  44         *(.text*)
  45
  46         KEEP(*(.init))
  47         KEEP(*(.fini))
  48
  49         /* .ctors */
  50         *crtbegin.o(.ctors)
  51         *crtbegin?.o(.ctors)
  52         *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
  53         *(SORT(.ctors.*))
  54         *(.ctors)
  55
  56         /* .dtors */
  57         *crtbegin.o(.dtors)
  58         *crtbegin?.o(.dtors)
  59         *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
  60         *(SORT(.dtors.*))
  61         *(.dtors)
  62
  63         *(.rodata*)
  64
  65         KEEP(*(.eh_frame*))
  66     } > FLASH
  67
  68     .ARM.extab :
  69     {
  70         *(.ARM.extab* .gnu.linkonce.armextab.*)
  71     } > FLASH
  72
  73     __exidx_start = .;
  74     .ARM.exidx :
  75     {
  76         *(.ARM.exidx* .gnu.linkonce.armexidx.*)
  77     } > FLASH
  78     __exidx_end = .;
  79
  80     __etext = .;
  81
  82     .data : AT (__etext)
  83     {
  84         __data_start__ = .;
  85         *(vtable)
  86         *(.data*)
  87
  88         . = ALIGN(4);
  89         /* preinit data */
  90         PROVIDE_HIDDEN (__preinit_array_start = .);
  91         KEEP(*(.preinit_array))
  92         PROVIDE_HIDDEN (__preinit_array_end = .);
  93
  94         . = ALIGN(4);
  95         /* init data */
  96         PROVIDE_HIDDEN (__init_array_start = .);
  97         KEEP(*(SORT(.init_array.*)))
  98         KEEP(*(.init_array))
  99         PROVIDE_HIDDEN (__init_array_end = .);
 100
 101
 102         . = ALIGN(4);
 103         /* finit data */
 104         PROVIDE_HIDDEN (__fini_array_start = .);
 105         KEEP(*(SORT(.fini_array.*)))
 106         KEEP(*(.fini_array))
 107         PROVIDE_HIDDEN (__fini_array_end = .);
 108
 109         KEEP(*(.jcr*))
 110         . = ALIGN(4);
 111         /* All data end */
 112         __data_end__ = .;
 113
 114     } > RAM
 115
 116     .bss :
 117     {
 118         . = ALIGN(4);
 119         __bss_start__ = .;
 120         *(.bss*)
 121         *(COMMON)
 122         . = ALIGN(4);
 123         __bss_end__ = .;
 124     } > RAM
 125
 126     .heap (COPY):
 127     {
 128         __end__ = .;
 129         end = __end__;
 130         *(.heap*)
 131         __HeapLimit = .;
 132     } > RAM
 133
 134     /* .stack_dummy section doesn't contains any symbols. It is only
 135      * used for linker to calculate size of stack sections, and assign
 136      * values to stack symbols later */
 137     .stack_dummy (COPY):
 138     {
 139         *(.stack*)
 140     } > RAM
 141
 142     /* Set stack top to end of RAM, and stack limit move down by
 143      * size of stack_dummy section */
 144     __StackTop = ORIGIN(RAM) + LENGTH(RAM);
 145     __StackLimit = __StackTop - SIZEOF(.stack_dummy);
 146     PROVIDE(__stack = __StackTop);
 147
 148     /* Check if data + heap + stack exceeds RAM limit */
 149     ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
 150 }
 151