The open source version of the UEFI firmware for the APM X-Gene C1 system (also known as Mustang) has been deprecated. Please do not use it.

Instead, please get official APM versions of the UEFI firmware from

Updating From U-Boot

mustang_uefi_upgrade.tar.gz is a tarball containing files, tools, scripts, and documentation on upgrading an X-Gene C1 from the default u-boot install to UEFI. Contact Mark Langsdorf ( if you have difficulties.

Development Firmware

If you need to do your own firmware development, the repository is still available at However, it is not guaranteed to be up to date or supported.