build-rr640l.sh

# create folder
mkdir rr640l && cd rr640l

# Download driver
wget http://highpoint-tech.com/BIOS_Driver/RR64xL/Linux/RR64xl_Linux_Src_v1.4.6_19_12_04.tar.gz

# extract bin
tar xf RR64xl_Linux_Src_v1.4.6_19_12_04.tar.gz

# Don't run the bin, just get the archive
dd if=rr64xl-linux-src-v1.4.6_19_12_04.bin ibs=9239 skip=1 obs=1024 conv=sync of=rr64xl-linux-src-v1.4.6_19_12_04.tar.gz

# extract source
tar xf rr64xl-linux-src-v1.4.6_19_12_04.tar.gz

# fix install file for arch
sed -i 's/mkinitramfs/mkinitcpio/' osm/linux/install.sh
 
# cd to Makefile
cd product/rr64xl/linux

# build
make 

# install 
sudo make install

# You might want to autolaod the module via /etc/modules-load.d/
sudo modprobe rr640l