SiFive, the first fabless provider of customized, open-source-enabled semiconductors, and Microsemi Corporation (Nasdaq: MSCC), a leading provider of semiconductor solutions differentiated by power, security, reliability and performance, at the 7th RISC-V Workshop today announced the companies have formed a strategic relationship to meet the growing interest and demand in the RISC-V instruction set architecture. The companies have previously collaborated to provide RISC-V soft CPU cores for Microsemi’s PolarFire® FPGAs, IGLOO™2 FPGAs, SmartFusion™2 system-on-chip (SoC) FPGAs and RTG4™ FPGAs, currently available as part of the Microsemi Mi-V RISC-V ecosystem.
https://www.sifive.com/posts/2017/11/28/sifive-and-microsemi-expand-relationship-with-strategic-roadmap-alignment-and-linux-capable-risc-v-development-board/