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)

$ 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):

$ export CROSS_COMPILE=aarch64-linux-gnu-
$ make PLAT=imx8mp bl31
$ cp build/imx8mp/release/bl31.bin ../

Get the DDR Firmware

$ 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

$ export CROSS_COMPILE=aarch64-linux-gnu-
$ make imx8mp_navqp_defconfig
$ make

Burn the flash.bin to the MicroSD card at offset 32KB:

$ 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