This is a fork of the Spotify U-Boot repository which can be found here
You can find the original README in README_spotify.md
This requires almost no dependencies other than the ARM toolchain, which you can get by running prep_toolchain.sh
Alternatively, you can get the toolchain from here and extract it to /opt
You can run one of the following commands to compile U-Boot:
./mk superbird_development
./mk superbird_production