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.. SPDX-License-Identifier: GPL-2.0-or-later
.. sectionauthor:: Gilles Talis <gilles.talis@gmail.com>
i.MX8M Plus NavQ+ Board
=======================
U-Boot for the EmCraft Systems i.MX8M Plus NavQ+ board
Quick Start
-----------
- Build the ARM trusted firmware binary
- Get the DDR firmware
- Build U-Boot
- Flash to eMMC
- Boot
Get and Build the ARM Trusted Firmware (Trusted Firmware A)
-----------------------------------------------------------
.. code-block:: bash
$ echo "Downloading and building TF-A..."
$ git clone -b lts-v2.10 https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git
$ cd trusted-firmware-a
Then build ATF (TF-A):
.. code-block:: bash
$ export CROSS_COMPILE=aarch64-linux-gnu-
$ make PLAT=imx8mp bl31
$ cp build/imx8mp/release/bl31.bin ../
Get the DDR Firmware
--------------------
.. code-block:: bash
$ cd ..
$ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.23.bin
$ chmod +x firmware-imx-8.23.bin
$ ./firmware-imx-8.23.bin
$ cp firmware-imx-8.23/firmware/ddr/synopsys/lpddr4*_202006.bin ./
Build U-Boot
------------
.. code-block:: bash
$ export CROSS_COMPILE=aarch64-linux-gnu-
$ make imx8mp_navqp_defconfig
$ make
Burn the flash.bin to the MicroSD card at offset 32KB:
.. code-block:: bash
$ sudo dd if=flash.bin of=/dev/sd[x] bs=1K seek=32 conv=notrunc; sync
Boot
----
Set Boot switch to SD boot
Use /dev/ttyUSB0 for U-Boot console
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