U-Boot for the NXP i.MX8MM EVK board

Quick Start

  • Build the ARM Trusted firmware binary
  • Get ddr firmware
  • Build U-Boot
  • Boot

Get and Build the ARM Trusted firmware

Note: builddir is U-Boot build directory (source directory for in-tree builds) Get ATF from: branch: imx_5.4.47_2.2.0

$ make PLAT=imx8mm bl31
$ cp build/imx8mm/release/bl31.bin $(builddir)

Get the ddr firmware

$ wget
$ chmod +x firmware-imx-8.9.bin
$ ./firmware-imx-8.9
$ cp firmware-imx-8.9/firmware/ddr/synopsys/lpddr4*.bin $(builddir)

Build U-Boot

$ export CROSS_COMPILE=aarch64-poky-linux-
$ make imx8mm_evk_defconfig
$ export ATF_LOAD_ADDR=0x920000
$ make

Burn the flash.bin to MicroSD card offset 33KB:

$sudo dd if=flash.bin of=/dev/sd[x] bs=1024 seek=33 conv=notrunc
$sudo dd if=u-boot.itb of=/dev/sdc bs=1024 seek=384 conv=sync


Set Boot switch to SD boot