As explained in the KBA, the FW architecture is based on AN75779 FW code example. Refer to this example for UVC architecture. The GPIF interface side uses slave FIFO architecture. This GPIF project is available with AN65974. Slave FIFO GPIF state machine is chosen so that the design can support multiple sensors if needed. To get the FPGA configuration load through SPI example, please refer to AN84868. This FW cannot be shared now as the kit is not yet launched and is still in development phase. Also the sensor configurations can be shared based on NDA with HelionVision.
Below are the references to each section in FW.
UVC Architecture - AN75779
UVC fixed single sensor parallel interface - An75779
Slave FIFO interface - AN65974
FPGA configuration load through FX3 - AN84868