imx8mn_evk

U-Boot for the NXP i.MX8MN EVK board

Quick Start

• Build the ARM Trusted firmware binary
• Get firmware-imx package
• Build U-Boot
• Boot

Get and Build the ARM Trusted firmware

Note: srctree is U-Boot source directory Get ATF from: https://source.codeaurora.org/external/imx/imx-atf branch: imx_4.19.35_1.1.0

$ make PLAT=imx8mn bl31
$ cp build/imx8mn/release/bl31.bin $(srctree)

Get the ddr firmware

$ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.5.bin
$ chmod +x firmware-imx-8.5.bin
$ ./firmware-imx-8.5
$ cp firmware-imx-8.5/firmware/ddr/synopsys/ddr4*.bin $(srctree)

Build U-Boot

$ export CROSS_COMPILE=aarch64-poky-linux-
$ make imx8mn_ddr4_evk_defconfig
$ export ATF_LOAD_ADDR=0x960000
$ make flash.bin

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

$sudo dd if=flash.bin of=/dev/sd[x] bs=1024 seek=32 conv=notrunc

Boot

Set Boot switch to SD boot