Hi, Alibaba open-sources cores from the E902 micro-controller class core to the C910 core for servers in data centers. Verilog, toolchains etc available under Apache. https://www.cnx-software.com/2021/10/20/alibaba-open-source-risc-v-cores-xuantie-e902-e906-c906-and-c910/ https://github.com/T-head-Semi - Lauri