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  1. /* Teensyduino Core Library
  2. * http://www.pjrc.com/teensy/
  3. * Copyright (c) 2017 PJRC.COM, LLC.
  4. *
  5. * Permission is hereby granted, free of charge, to any person obtaining
  6. * a copy of this software and associated documentation files (the
  7. * "Software"), to deal in the Software without restriction, including
  8. * without limitation the rights to use, copy, modify, merge, publish,
  9. * distribute, sublicense, and/or sell copies of the Software, and to
  10. * permit persons to whom the Software is furnished to do so, subject to
  11. * the following conditions:
  12. *
  13. * 1. The above copyright notice and this permission notice shall be
  14. * included in all copies or substantial portions of the Software.
  15. *
  16. * 2. If the Software is incorporated into a build system that allows
  17. * selection among a list of target devices, then similar target
  18. * devices manufactured by PJRC.COM must be included in the list of
  19. * target devices and selectable in the same manner.
  20. *
  21. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22. * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23. * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24. * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  25. * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  26. * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  27. * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  28. * SOFTWARE.
  29. */
  30. MEMORY
  31. {
  32. FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 62K
  33. RAM (rwx) : ORIGIN = 0x1FFFF800, LENGTH = 8K
  34. }
  35. ENTRY(_VectorsFlash)
  36. SECTIONS
  37. {
  38. .text : {
  39. . = 0;
  40. KEEP(*(.vectors))
  41. *(.startup*)
  42. /* TODO: does linker detect startup overflow onto flashconfig? */
  43. . = 0x400;
  44. KEEP(*(.flashconfig*))
  45. *(.text*)
  46. *(.rodata*)
  47. . = ALIGN(4);
  48. KEEP(*(.init))
  49. . = ALIGN(4);
  50. __preinit_array_start = .;
  51. KEEP (*(.preinit_array))
  52. __preinit_array_end = .;
  53. __init_array_start = .;
  54. KEEP (*(SORT(.init_array.*)))
  55. KEEP (*(.init_array))
  56. __init_array_end = .;
  57. } > FLASH = 0xFF
  58. .ARM.exidx : {
  59. __exidx_start = .;
  60. *(.ARM.exidx* .gnu.linkonce.armexidx.*)
  61. __exidx_end = .;
  62. } > FLASH
  63. _etext = .;
  64. .usbdescriptortable (NOLOAD) : {
  65. /* . = ORIGIN(RAM); */
  66. . = ALIGN(512);
  67. *(.usbdescriptortable*)
  68. } > RAM
  69. .dmabuffers (NOLOAD) : {
  70. . = ALIGN(4);
  71. *(.dmabuffers*)
  72. } > RAM
  73. .usbbuffers (NOLOAD) : {
  74. . = ALIGN(4);
  75. *(.usbbuffers*)
  76. } > RAM
  77. .data : AT (_etext) {
  78. . = ALIGN(4);
  79. _sdata = .;
  80. *(.fastrun*)
  81. *(.data*)
  82. . = ALIGN(4);
  83. _edata = .;
  84. } > RAM
  85. .noinit (NOLOAD) : {
  86. *(.noinit*)
  87. } > RAM
  88. .bss : {
  89. . = ALIGN(4);
  90. _sbss = .;
  91. __bss_start__ = .;
  92. *(.bss*)
  93. *(COMMON)
  94. . = ALIGN(4);
  95. _ebss = .;
  96. __bss_end = .;
  97. __bss_end__ = .;
  98. } > RAM
  99. _estack = ORIGIN(RAM) + LENGTH(RAM);
  100. _teensy_model_identifier = 0x20;
  101. }