You can use the code from these repositories to experiment, test, build, create patches, issue pull requests, etc.
https://github.com/openhwfoundation/cv-hpdcache - Project repository hosted on GitHub.
https://github.com/openhwfoundation/cv-hpdcache-verif - Project repository hosted on GitHub.
https://github.com/openhwfoundation/cva6 - Project repository hosted on GitHub.
https://github.com/openhwfoundation/u-boot - Project repository hosted on GitHub.
https://github.com/openhwfoundation/cva6-sdk - Project repository hosted on GitHub.
https://github.com/openhwfoundation/meta-cva6-yocto - Project repository hosted on GitHub.
https://github.com/openhwfoundation/cva6-safe - Project repository hosted on GitHub.