```
++ dpkg -x /home/iav/armbian/output/debs/linux-u-boot-rock64-current_21.05.1_arm64.deb /tmp/tmp.ONvPM6ibRl/
++ write_uboot_platform /tmp/tmp.ONvPM6ibRl/usr/lib/linux-u-boot-rock64-current_21.05.1_arm64 /dev/loop4
++ [[ -f /tmp/tmp.ONvPM6ibRl/usr/lib/linux-u-boot-rock64-current_21.05.1_arm64/rksd_loader.img ]]
++ [[ -f /tmp/tmp.ONvPM6ibRl/usr/lib/linux-u-boot-rock64-current_21.05.1_arm64/u-boot.itb ]]
++ [[ -f /tmp/tmp.ONvPM6ibRl/usr/lib/linux-u-boot-rock64-current_21.05.1_arm64/uboot.img ]]
++ echo 'Unsupported u-boot processing configuration!'
Unsupported u-boot processing configuration!

```