Teensy 4.1 core updated for C++20
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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. SECTIONS
  36. {
  37. .text : {
  38. . = 0;
  39. KEEP(*(.vectors))
  40. *(.startup*)
  41. /* TODO: does linker detect startup overflow onto flashconfig? */
  42. . = 0x400;
  43. KEEP(*(.flashconfig*))
  44. *(.text*)
  45. *(.rodata*)
  46. . = ALIGN(4);
  47. KEEP(*(.init))
  48. . = ALIGN(4);
  49. __preinit_array_start = .;
  50. KEEP (*(.preinit_array))
  51. __preinit_array_end = .;
  52. __init_array_start = .;
  53. KEEP (*(SORT(.init_array.*)))
  54. KEEP (*(.init_array))
  55. __init_array_end = .;
  56. } > FLASH = 0xFF
  57. .ARM.exidx : {
  58. __exidx_start = .;
  59. *(.ARM.exidx* .gnu.linkonce.armexidx.*)
  60. __exidx_end = .;
  61. } > FLASH
  62. _etext = .;
  63. .usbdescriptortable (NOLOAD) : {
  64. /* . = ORIGIN(RAM); */
  65. . = ALIGN(512);
  66. *(.usbdescriptortable*)
  67. } > RAM
  68. .dmabuffers (NOLOAD) : {
  69. . = ALIGN(4);
  70. *(.dmabuffers*)
  71. } > RAM
  72. .usbbuffers (NOLOAD) : {
  73. . = ALIGN(4);
  74. *(.usbbuffers*)
  75. } > RAM
  76. .data : AT (_etext) {
  77. . = ALIGN(4);
  78. _sdata = .;
  79. *(.fastrun*)
  80. *(.data*)
  81. . = ALIGN(4);
  82. _edata = .;
  83. } > RAM
  84. .noinit (NOLOAD) : {
  85. *(.noinit*)
  86. } > RAM
  87. .bss : {
  88. . = ALIGN(4);
  89. _sbss = .;
  90. __bss_start__ = .;
  91. *(.bss*)
  92. *(COMMON)
  93. . = ALIGN(4);
  94. _ebss = .;
  95. __bss_end = .;
  96. __bss_end__ = .;
  97. } > RAM
  98. _estack = ORIGIN(RAM) + LENGTH(RAM);
  99. _teensy_model_identifier = 0x20;
  100. }