README 808 B

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  1. How to use U-Boot on NXP i.MXRT1020 EVK
  2. -----------------------------------------------
  3. - Build U-Boot for i.MXRT1020 EVK:
  4. $ make mrproper
  5. $ make imxrt1020-evk_defconfig
  6. $ make
  7. This will generate the SPL image called SPL and the u-boot.img.
  8. - Flash the SPL image into the micro SD card:
  9. sudo dd if=SPL of=/dev/sdX bs=1k seek=1; sync
  10. - Flash the u-boot.img image into the micro SD card:
  11. sudo dd if=u-boot.img of=/dev/sdX bs=1k seek=128; sync
  12. - Jumper settings:
  13. SW8: 0 1 1 0
  14. where 0 means bottom position and 1 means top position (from the
  15. switch label numbers reference).
  16. - Connect the USB cable between the EVK and the PC for the console.
  17. (The USB console connector is the one close the ethernet connector)
  18. - Insert the micro SD card in the board, power it up and U-Boot messages should
  19. come up.