U-Boot for the Variscite VAR-SOM-MX93 Symphony evaluation board

Quick Start

  • Get and Build the ARM Trusted firmware

  • Get the DDR firmware

  • Get ahab-container.img

  • Build U-Boot

  • Boot

Get and Build the ARM Trusted firmware

Note: srctree is U-Boot source directory Get ATF from: branch: lf_v2.8

$ unset LDFLAGS
$ make PLAT=imx93 bl31
$ cp build/imx93/release/bl31.bin $(srctree)

Get the DDR firmware

$ wget
$ chmod +x firmware-imx-8.21.bin
$ ./firmware-imx-8.21.bin
$ cp firmware-imx-8.21/firmware/ddr/synopsys/lpddr4*.bin $(srctree)

Get ahab-container.img

$ wget
$ chmod +x firmware-sentinel-0.11.bin
$ ./firmware-sentinel-0.11.bin
$ cp firmware-sentinel-0.11/mx93a1-ahab-container.img $(srctree)

Build U-Boot

$ export CROSS_COMPILE=aarch64-poky-linux-
$ make imx93_var_som_defconfig
$ make

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

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


Set Boot switch to SD boot