1  /*
  2  ******************************************************************************
  3  **
  4  **  File        : LinkerScript.ld (debug in RAM dedicated)
  5  **
  6  **  Author      : STM32CubeIDE
  7  **
  8  **  Abstract    : Linker script for STM32U575xx Device from STM32U5 series
  9  **                      784Kbytes RAM
 10  **
 11  **                Set heap size, stack size and stack location according
 12  **                to application requirements.
 13  **
 14  **                Set memory bank area and size if external memory is used.
 15  **
 16  **  Target      : STMicroelectronics STM32
 17  **
 18  **  Distribution: The file is distributed as is without any warranty
 19  **                of any kind.
 20  **
 21  *****************************************************************************
 22  ** @attention
 23  **
 24  ** Copyright (c) 2022 STMicroelectronics.
 25  ** All rights reserved.
 26  **
 27  ** This software is licensed under terms that can be found in the LICENSE file
 28  ** in the root directory of this software component.
 29  ** If no LICENSE file comes with this software, it is provided AS-IS.
 30  **
 31  *****************************************************************************
 32  */
 33  
 34  /* Entry Point */
 35  ENTRY(Reset_Handler)
 36  
 37  /* Highest address of the user mode stack */
 38  _estack = ORIGIN(RAM) + LENGTH(RAM);	/* end of "RAM" Ram type memory */
 39  
 40  _Min_Heap_Size = 0x200 ;	/* required amount of heap  */
 41  _Min_Stack_Size = 0x400 ;	/* required amount of stack */
 42  
 43  /* Memories definition */
 44  MEMORY
 45  {
 46    RAM	(xrw)	: ORIGIN = 0x20000000,	LENGTH = 768K
 47    SRAM4	(xrw)	: ORIGIN = 0x28000000,	LENGTH = 16K
 48  }
 49  
 50  /* Sections */
 51  SECTIONS
 52  {
 53    /* The startup code into "RAM" Ram type memory */
 54    .isr_vector :
 55    {
 56      KEEP(*(.isr_vector)) /* Startup code */
 57    } >RAM
 58  
 59    /* The program code and other data into "RAM" Ram type memory */
 60    .text :
 61    {
 62      *(.text)           /* .text sections (code) */
 63      *(.text*)          /* .text* sections (code) */
 64      *(.glue_7)         /* glue arm to thumb code */
 65      *(.glue_7t)        /* glue thumb to arm code */
 66      *(.eh_frame)
 67      *(.RamFunc)        /* .RamFunc sections */
 68      *(.RamFunc*)       /* .RamFunc* sections */
 69  
 70      KEEP (*(.init))
 71      KEEP (*(.fini))
 72  
 73      _etext = .;        /* define a global symbols at end of code */
 74    } >RAM
 75  
 76    /* Constant data into "RAM" Ram type memory */
 77    .rodata :
 78    {
 79      *(.rodata)         /* .rodata sections (constants, strings, etc.) */
 80      *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
 81    } >RAM
 82  
 83    .ARM.extab :
 84    {
 85      *(.ARM.extab* .gnu.linkonce.armextab.*)
 86    } >RAM
 87  
 88    .ARM :
 89    {
 90      __exidx_start = .;
 91      *(.ARM.exidx*)
 92      __exidx_end = .;
 93    } >RAM
 94  
 95    .preinit_array :
 96    {
 97      PROVIDE_HIDDEN (__preinit_array_start = .);
 98      KEEP (*(.preinit_array*))
 99      PROVIDE_HIDDEN (__preinit_array_end = .);
100    } >RAM
101  
102    .init_array :
103    {
104      PROVIDE_HIDDEN (__init_array_start = .);
105      KEEP (*(SORT(.init_array.*)))
106      KEEP (*(.init_array*))
107      PROVIDE_HIDDEN (__init_array_end = .);
108    } >RAM
109  
110    .fini_array :
111    {
112      PROVIDE_HIDDEN (__fini_array_start = .);
113      KEEP (*(SORT(.fini_array.*)))
114      KEEP (*(.fini_array*))
115      PROVIDE_HIDDEN (__fini_array_end = .);
116    } >RAM
117  
118    /* Used by the startup to initialize data */
119    _sidata = LOADADDR(.data);
120  
121    /* Initialized data sections into "RAM" Ram type memory */
122    .data :
123    {
124      _sdata = .;        /* create a global symbol at data start */
125      *(.data)           /* .data sections */
126      *(.data*)          /* .data* sections */
127  
128      _edata = .;        /* define a global symbol at data end */
129    } >RAM
130  
131    /* Uninitialized data section into "RAM" Ram type memory */
132    .bss :
133    {
134      /* This is used by the startup in order to initialize the .bss section */
135      _sbss = .;         /* define a global symbol at bss start */
136      __bss_start__ = _sbss;
137      *(.bss)
138      *(.bss*)
139      *(COMMON)
140  
141      _ebss = .;         /* define a global symbol at bss end */
142      __bss_end__ = _ebss;
143    } >RAM
144  
145    /* User_heap_stack section, used to check that there is enough "RAM" Ram type memory left */
146    ._user_heap_stack :
147    {
148      . = ALIGN(8);
149      PROVIDE ( end = . );
150      PROVIDE ( _end = . );
151      . = . + _Min_Heap_Size;
152      . = . + _Min_Stack_Size;
153      . = ALIGN(8);
154    } >RAM
155  
156    /* Remove information from the compiler libraries */
157    /DISCARD/ :
158    {
159      libc.a ( * )
160      libm.a ( * )
161      libgcc.a ( * )
162    }
163  
164    .ARM.attributes 0 : { *(.ARM.attributes) }
165  }