~/hdz_goggle/code$ tar xzvf linux-4.9.tar.gz
~/hdz_goggle/code$ cat media.tar.gzaa media.tar.gzab > media.tar.gz
~/hdz_goggle/code$ tar xzvf media.tar.gz
~/hdz_goggle/code$ tar xzvf toolchain.tar.gz
~/hdz_goggle/workspace/code$./setup.sh
~/hdz_goggle/code/$cd build
~/hdz_goggle/code/build$make clean all
the firmware is generated on ~/hdz_goggle/code/out