| Peng Fan | e66be2d | 2020-10-14 17:12:05 +0800 | [diff] [blame] | 1 | .. SPDX-License-Identifier: GPL-2.0+ |
| 2 | |
| 3 | imxrt1020-evk |
| 4 | ============= |
| 5 | |
| 6 | How to use U-Boot on NXP i.MXRT1020 EVK |
| 7 | --------------------------------------- |
| 8 | |
| 9 | - Build U-Boot for i.MXRT1020 EVK: |
| 10 | |
| 11 | .. code-block:: bash |
| 12 | |
| 13 | $ make mrproper |
| 14 | $ make imxrt1020-evk_defconfig |
| 15 | $ make |
| 16 | |
| 17 | This will generate the SPL image called SPL and the u-boot.img. |
| 18 | |
| 19 | - Flash the SPL image into the micro SD card: |
| 20 | |
| 21 | .. code-block:: bash |
| 22 | |
| 23 | $sudo dd if=SPL of=/dev/sdX bs=1k seek=1 conv=notrunc; sync |
| 24 | |
| 25 | - Flash the u-boot.img image into the micro SD card: |
| 26 | |
| 27 | .. code-block:: bash |
| 28 | |
| 29 | $sudo dd if=u-boot.img of=/dev/sdX bs=1k seek=128 conv=notrunc; sync |
| 30 | |
| 31 | - Jumper settings:: |
| 32 | |
| 33 | SW8: 0 1 1 0 |
| 34 | |
| 35 | where 0 means bottom position and 1 means top position (from the |
| 36 | switch label numbers reference). |
| 37 | |
| 38 | - Connect the USB cable between the EVK and the PC for the console. |
| 39 | The USB console connector is the one close the ethernet connector |
| 40 | |
| 41 | - Insert the micro SD card in the board, power it up and U-Boot messages should come up. |