1/* 2** ################################################################### 3** Processors: MIMXRT685SFAWBR_cm33 4** MIMXRT685SFFOB_cm33 5** MIMXRT685SFVKB_cm33 6** 7** Compiler: GNU C Compiler 8** Reference manual: MIMXRT685 User manual Rev. 0.95 11 November 2019 9** Version: rev. 1.0, 2018-06-19 10** Build: b210303 11** 12** Abstract: 13** Linker file for the GNU C Compiler 14** 15** Copyright 2016 Freescale Semiconductor, Inc. 16** Copyright 2016-2021 NXP 17** All rights reserved. 18** 19** SPDX-License-Identifier: BSD-3-Clause 20** 21** http: www.nxp.com 22** mail: support@nxp.com 23** 24** ################################################################### 25*/ 26 27 28 29/* Entry Point */ 30ENTRY(Reset_Handler) 31 32HEAP_SIZE = DEFINED(__heap_size__) ? __heap_size__ : 0x0400; 33STACK_SIZE = DEFINED(__stack_size__) ? __stack_size__ : 0x0400; 34 35/* Specify the memory areas */ 36/* The SRAM region [0x10000-0x1BFFF] is reserved for ROM code. */ 37/* The SRAM region [0x0-0xFFFF], [0x1C000-0x1FFFF] is reserved for app-specific use cases. */ 38/* The SRAM region [0x20000-0x7FFFF] is reserved for Non-cached shared memory between M33 and DSP. */ 39MEMORY 40{ 41 m_flash_image (RX) : ORIGIN = 0x08041000, LENGTH = 0x00080000 42 m_interrupts (RX) : ORIGIN = 0x000C0000, LENGTH = 0x00000130 43 m_text (RX) : ORIGIN = 0x000C0130, LENGTH = 0x0007FED0 44 m_data (RW) : ORIGIN = 0x20180000, LENGTH = 0x00080000 45 m_usb_sram (RW) : ORIGIN = 0x40140000, LENGTH = 0x00004000 46} 47 48/* Define output sections */ 49SECTIONS 50{ 51 /* The startup code goes first into internal ram */ 52 .interrupts : 53 { 54 . = ALIGN(4); 55 __VECTOR_TABLE = .; 56 __Vectors = .; 57 KEEP(*(.isr_vector)) /* Startup code */ 58 . = ALIGN(4); 59 } > m_interrupts AT> m_flash_image 60 61 /* The program code and other data goes into internal ram */ 62 .text : 63 { 64 . = ALIGN(4); 65 *(.text) /* .text sections (code) */ 66 *(.text*) /* .text* sections (code) */ 67 *(.rodata) /* .rodata sections (constants, strings, etc.) */ 68 *(.rodata*) /* .rodata* sections (constants, strings, etc.) */ 69 *(.glue_7) /* glue arm to thumb code */ 70 *(.glue_7t) /* glue thumb to arm code */ 71 *(.eh_frame) 72 KEEP (*(.init)) 73 KEEP (*(.fini)) 74 . = ALIGN(4); 75 } > m_text AT> m_flash_image 76 77 .ARM.extab : 78 { 79 *(.ARM.extab* .gnu.linkonce.armextab.*) 80 } > m_text AT> m_flash_image 81 82 .ARM : 83 { 84 __exidx_start = .; 85 *(.ARM.exidx*) 86 __exidx_end = .; 87 } > m_text AT> m_flash_image 88 89 .ctors : 90 { 91 __CTOR_LIST__ = .; 92 /* gcc uses crtbegin.o to find the start of 93 the constructors, so we make sure it is 94 first. Because this is a wildcard, it 95 doesn't matter if the user does not 96 actually link against crtbegin.o; the 97 linker won't look for a file to match a 98 wildcard. The wildcard also means that it 99 doesn't matter which directory crtbegin.o 100 is in. */ 101 KEEP (*crtbegin.o(.ctors)) 102 KEEP (*crtbegin?.o(.ctors)) 103 /* We don't want to include the .ctor section from 104 from the crtend.o file until after the sorted ctors. 105 The .ctor section from the crtend file contains the 106 end of ctors marker and it must be last */ 107 KEEP (*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)) 108 KEEP (*(SORT(.ctors.*))) 109 KEEP (*(.ctors)) 110 __CTOR_END__ = .; 111 } > m_text AT> m_flash_image 112 113 .dtors : 114 { 115 __DTOR_LIST__ = .; 116 KEEP (*crtbegin.o(.dtors)) 117 KEEP (*crtbegin?.o(.dtors)) 118 KEEP (*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)) 119 KEEP (*(SORT(.dtors.*))) 120 KEEP (*(.dtors)) 121 __DTOR_END__ = .; 122 } > m_text AT> m_flash_image 123 124 .preinit_array : 125 { 126 PROVIDE_HIDDEN (__preinit_array_start = .); 127 KEEP (*(.preinit_array*)) 128 PROVIDE_HIDDEN (__preinit_array_end = .); 129 } > m_text AT> m_flash_image 130 131 .init_array : 132 { 133 PROVIDE_HIDDEN (__init_array_start = .); 134 KEEP (*(SORT(.init_array.*))) 135 KEEP (*(.init_array*)) 136 PROVIDE_HIDDEN (__init_array_end = .); 137 } > m_text AT> m_flash_image 138 139 .fini_array : 140 { 141 PROVIDE_HIDDEN (__fini_array_start = .); 142 KEEP (*(SORT(.fini_array.*))) 143 KEEP (*(.fini_array*)) 144 PROVIDE_HIDDEN (__fini_array_end = .); 145 } > m_text AT> m_flash_image 146 147 __etext = .; /* define a global symbol at end of code */ 148 __DATA_ROM = .; /* Symbol is used by startup for data initialization */ 149 150 __VECTOR_RAM = ORIGIN(m_interrupts); 151 __RAM_VECTOR_TABLE_SIZE_BYTES = 0x0; 152 153 .data : 154 { 155 . = ALIGN(4); 156 __DATA_RAM = .; 157 __data_start__ = .; /* create a global symbol at data start */ 158 *(CodeQuickAccess) /* CodeQuickAccess sections */ 159 *(DataQuickAccess) /* DataQuickAccess sections */ 160 *(.data) /* .data sections */ 161 *(.data*) /* .data* sections */ 162 KEEP(*(.jcr*)) 163 . = ALIGN(4); 164 __data_end__ = .; /* define a global symbol at data end */ 165 } > m_data AT> m_flash_image 166 167 __DATA_END = __DATA_ROM + (__data_end__ - __data_start__); 168 _image_size = __DATA_END - __VECTOR_TABLE; 169 ASSERT(_image_size <= LENGTH(m_flash_image), "region m_flash_image overflowed with text and data") 170 171 /* Uninitialized data section */ 172 .bss : 173 { 174 /* This is used by the startup in order to initialize the .bss section */ 175 . = ALIGN(4); 176 __START_BSS = .; 177 __bss_start__ = .; 178 *(.bss) 179 *(.bss*) 180 *(COMMON) 181 . = ALIGN(4); 182 __bss_end__ = .; 183 __END_BSS = .; 184 } > m_data 185 186 .heap : 187 { 188 . = ALIGN(8); 189 __end__ = .; 190 PROVIDE(end = .); 191 __HeapBase = .; 192 . += HEAP_SIZE; 193 __HeapLimit = .; 194 __heap_limit = .; /* Add for _sbrk */ 195 } > m_data 196 197 .stack : 198 { 199 . = ALIGN(8); 200 . += STACK_SIZE; 201 } > m_data 202 203 m_usb_bdt (NOLOAD) : 204 { 205 . = ALIGN(512); 206 *(m_usb_bdt) 207 } > m_usb_sram 208 209 m_usb_global (NOLOAD) : 210 { 211 *(m_usb_global) 212 } > m_usb_sram 213 214 /* Initializes stack on the end of block */ 215 __StackTop = ORIGIN(m_data) + LENGTH(m_data); 216 __StackLimit = __StackTop - STACK_SIZE; 217 PROVIDE(__stack = __StackTop); 218 219 .ARM.attributes 0 : { *(.ARM.attributes) } 220 221 ASSERT(__StackLimit >= __HeapLimit, "region m_data overflowed with stack and heap") 222} 223 224