shithub: riscv

ref: f5ff6d6f34e2cab60722a8a2e8444436c969bfeb
dir: /sys/src/9/

alphapc/
bcm/
bitsy/
boot/
ip/
kw/
mkfile
mtx/
omap/
omap4/
pc/
port/
ppc/
teg2/