"RISC-V-based" does not automatically mean "open". Vendors who put RISC-V in an SoC are free to add their own PSP or ME equivalents. Also, the processor itsel

"RISC-V-based" does not automatically mean "open". Vendors who put RISC-V in an SoC are free to add their own PSP or ME equivalents. Also, the processor itself is a small portion of a fully functioning computer. Things like GPU, wifi, bluetooth etc are most likely going to be proprietary.