Generating the Ibex Core

This document describes the process for generating the custom rv_core_ibex IP block for the Kelvin SoC.

The IP is generated using the ipgen.py script from the OpenTitan repository. This script takes an IP template and a configuration file as input and generates a concrete IP block in an output directory.

Generation Command

To generate the rv_core_ibex IP, run the following command from the root of the repository:

python3 opentitan/util/ipgen.py generate \
    -C opentitan/hw/ip_templates/rv_core_ibex \
    -c fpga/ip/kelvin_rv_core_ibex.ipconfig.hjson \
    -o fpga/ip/rv_core_ibex \
    --force

Dependencies

The ipgen.py script has several Python dependencies that must be installed:

• hjson
• mako
• semantic_version
• tabulate
• pycryptodome

Output

The script will generate the rv_core_ibex IP block in the fpga/ip/rv_core_ibex directory. This will include the .core file, the RTL files, and any other necessary files for the IP.