1 | /*
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2 | *****************************************************************************
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3 | **
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4 | ** File : stm32_flash.ld
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5 | **
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6 | ** Abstract : Linker script for STM32F401VC Device with
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7 | ** 256KByte FLASH, 64KByte RAM
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8 | **
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9 | ** Set heap size, stack size and stack location according
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10 | ** to application requirements.
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11 | **
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12 | ** Set memory bank area and size if external memory is used.
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13 | **
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14 | ** Target : STMicroelectronics STM32
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15 | **
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16 | ** Environment : Atollic TrueSTUDIO(R)
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17 | **
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18 | ** Distribution: The file is distributed “as is,” without any warranty
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19 | ** of any kind.
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20 | **
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21 | ** (c)Copyright Atollic AB.
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22 | ** You may use this file as-is or modify it according to the needs of your
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23 | ** project. This file may only be built (assembled or compiled and linked)
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24 | ** using the Atollic TrueSTUDIO(R) product. The use of this file together
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25 | ** with other tools than Atollic TrueSTUDIO(R) is not permitted.
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26 | **
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27 | *****************************************************************************
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28 | */
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29 |
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30 | /* Entry Point */
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31 | ENTRY(Reset_Handler)
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32 |
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33 | /* Highest address of the user mode stack */
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34 | _estack = 0x2000FFFF; /* end of 64K RAM */
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35 |
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36 | /* Generate a link error if heap and stack don't fit into RAM */
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37 | _Min_Heap_Size = 0; /* required amount of heap */
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38 | _Min_Stack_Size = 0x400; /* required amount of stack */
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39 |
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40 | /* Specify the memory areas */
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41 | MEMORY
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42 | {
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43 | FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 512K
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44 | RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 96K
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45 | MEMORY_B1 (rx) : ORIGIN = 0x60000000, LENGTH = 0K
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46 | CCMRAM (rw) : ORIGIN = 0x10000000, LENGTH = 0K
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47 | }
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48 |
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49 | /* Define output sections */
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50 | SECTIONS
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51 | {
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52 | /* The startup code goes first into FLASH */
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53 | .isr_vector :
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54 | {
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55 | . = ALIGN(4);
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56 | KEEP(*(.isr_vector)) /* Startup code */
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57 | . = ALIGN(4);
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58 | } >FLASH
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59 |
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60 | /* The program code and other data goes into FLASH */
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61 | .text :
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62 | {
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63 | . = ALIGN(4);
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64 | *(.text) /* .text sections (code) */
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65 | *(.text*) /* .text* sections (code) */
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66 | *(.glue_7) /* glue arm to thumb code */
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67 | *(.glue_7t) /* glue thumb to arm code */
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68 | *(.eh_frame)
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69 |
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70 | KEEP (*(.init))
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71 | KEEP (*(.fini))
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72 |
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73 | . = ALIGN(4);
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74 | _etext = .; /* define a global symbols at end of code */
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75 | } >FLASH
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76 |
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77 | /* Constant data goes into FLASH */
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78 | .rodata :
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79 | {
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80 | . = ALIGN(4);
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81 | *(.rodata) /* .rodata sections (constants, strings, etc.) */
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82 | *(.rodata*) /* .rodata* sections (constants, strings, etc.) */
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83 | . = ALIGN(4);
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84 | } >FLASH
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85 |
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86 | .ARM.extab : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >FLASH
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87 | .ARM : {
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88 | __exidx_start = .;
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89 | *(.ARM.exidx*)
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90 | __exidx_end = .;
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91 | } >FLASH
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92 |
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93 | .preinit_array :
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94 | {
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95 | PROVIDE_HIDDEN (__preinit_array_start = .);
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96 | KEEP (*(.preinit_array*))
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97 | PROVIDE_HIDDEN (__preinit_array_end = .);
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98 | } >FLASH
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99 | .init_array :
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100 | {
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101 | PROVIDE_HIDDEN (__init_array_start = .);
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102 | KEEP (*(SORT(.init_array.*)))
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103 | KEEP (*(.init_array*))
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104 | PROVIDE_HIDDEN (__init_array_end = .);
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105 | } >FLASH
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106 | .fini_array :
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107 | {
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108 | PROVIDE_HIDDEN (__fini_array_start = .);
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109 | KEEP (*(SORT(.fini_array.*)))
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110 | KEEP (*(.fini_array*))
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111 | PROVIDE_HIDDEN (__fini_array_end = .);
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112 | } >FLASH
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113 |
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114 | /* used by the startup to initialize data */
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115 | _sidata = LOADADDR(.data);
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116 |
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117 | /* Initialized data sections goes into RAM, load LMA copy after code */
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118 | .data :
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119 | {
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120 | . = ALIGN(4);
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121 | _sdata = .; /* create a global symbol at data start */
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122 | *(.data) /* .data sections */
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123 | *(.data*) /* .data* sections */
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124 |
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125 | . = ALIGN(4);
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126 | _edata = .; /* define a global symbol at data end */
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127 | } >RAM AT> FLASH
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128 |
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129 | _siccmram = LOADADDR(.ccmram);
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130 |
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131 | /* CCM-RAM section
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132 | *
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133 | * IMPORTANT NOTE!
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134 | * If initialized variables will be placed in this section,
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135 | * the startup code needs to be modified to copy the init-values.
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136 | */
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137 | .ccmram :
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138 | {
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139 | . = ALIGN(4);
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140 | _sccmram = .; /* create a global symbol at ccmram start */
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141 | *(.ccmram)
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142 | *(.ccmram*)
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143 |
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144 | . = ALIGN(4);
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145 | _eccmram = .; /* create a global symbol at ccmram end */
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146 | } >CCMRAM AT> FLASH
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147 |
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148 | /* Uninitialized data section */
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149 | . = ALIGN(4);
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150 | .bss :
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151 | {
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152 | /* This is used by the startup in order to initialize the .bss secion */
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153 | _sbss = .; /* define a global symbol at bss start */
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154 | __bss_start__ = _sbss;
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155 | *(.bss)
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156 | *(.bss*)
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157 | *(COMMON)
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158 |
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159 | . = ALIGN(4);
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160 | _ebss = .; /* define a global symbol at bss end */
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161 | __bss_end__ = _ebss;
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162 | } >RAM
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163 |
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164 | /* User_heap_stack section, used to check that there is enough RAM left */
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165 | ._user_heap_stack :
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166 | {
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167 | . = ALIGN(4);
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168 | PROVIDE ( end = . );
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169 | PROVIDE ( _end = . );
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170 | . = . + _Min_Heap_Size;
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171 | . = . + _Min_Stack_Size;
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172 | . = ALIGN(4);
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173 | } >RAM
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174 |
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175 | /* MEMORY_bank1 section, code must be located here explicitly */
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176 | /* Example: extern int foo(void) __attribute__ ((section (".mb1text"))); */
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177 | .memory_b1_text :
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178 | {
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179 | *(.mb1text) /* .mb1text sections (code) */
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180 | *(.mb1text*) /* .mb1text* sections (code) */
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181 | *(.mb1rodata) /* read-only data (constants) */
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182 | *(.mb1rodata*)
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183 | } >MEMORY_B1
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184 |
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185 | /* Remove information from the standard libraries */
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186 | /DISCARD/ :
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187 | {
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188 | libc.a ( * )
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189 | libm.a ( * )
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190 | libgcc.a ( * )
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191 | }
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192 |
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193 | .ARM.attributes 0 : { *(.ARM.attributes) }
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194 | }
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