Good thing I managed to grab a HiFive Unmatched. OpenBSD works sweetly on this.
I'll never forgive SiFive for discontinuing the only blobless RISC-V machine (HiFive Unleashed) after shipping only a few thousand units (which they did only because Debian demanded it as a condition of adding support).
HiFive Unmatched ($665) had several thousand units built.
Absolutely no reason to buy an Unmatched now even if you could because the VisionFive 2 (Star64, Mars) are slightly better in almost every way starting at 1/10th the price.