``` -rw-r--r-- 1 root root 51913 May 13 2019 rk3399-firefly.dtb -rw-r--r-- 1 root root 615089 May 13 2019 u-boot.bin -rw-r--r-- 1 root root 805320 May 13 2019 uboot.elf -rw-r--r-- 1 root root 615932 May 13 2019 u-boot.img -rw-r--r-- 1 root root 563176 May 13 2019 u-boot-nodtb.bin -rw-r--r-- 1 root root 92458 May 13 2019 u-boot-spl.bin -rw-r--r-- 1 root root 96256 May 13 2019 u-boot-spl.rksd ```