GSC

GSC (Google Security Chip) is a custom chip created by Google for security use on chromebooks and pixel phones. It is marketed as the "Titan Chip". The design is proprietary but we know it uses risc-v cores (source?). This page will only cover usage in chromebooks.

Firmware

There are two versions of the firmware, corresponding to two versions of the GSC. The first generation GSC (H1) uses the Cr50 firmware. It is based on cros ec and is partially open source. Certain components of the firmware are only available internally at google.

The second generation GSC (D2) uses the Ti50 firmware. It shares some parts in common with Cr50, but appears to use some rust code as well (source?).