README.vhost

How to test SCP over VHOST

1) Download qemu source and build it
2) sudo cp -r ./build/subprojects/libvhost-user/* /usr/local/lib/
3) Edit module/host/vhost/CMakeLists.txt and make this line:

-set(QEMU_SRC_DIR "/home/dcarpenter/progs/qemu/")
+set(QEMU_SRC_DIR "/home/<your username>/your/path/")

4) cmake -B build-vhost -DSCP_FIRMWARE_SOURCE_DIR:PATH=vhost-user/fw -DDISABLE_CPPCHECK=1
5) cmake --build build-vhost/
6) Start the SCP server:

	~/progs/scmi/SCP/build-vhost/bin/vhost-user.elf

7) Run qemu.  You'll want to set virt-8.2,acpi=off and provide a
   qemu.dtb device tree file.

~/progs/qemu/build/qemu-system-aarch64 \
    -nographic \
    -cpu cortex-a57 \
    -smp 2 \
    -machine virt-8.2,acpi=off,memory-backend=mem \
    -m 2G \
    -kernel vmlinux-$VER \
    -initrd initrd.img-$VER \
    -dtb qemu.dtb \
    -drive if=none,file=mantic.img,id=hd0 \
    -drive file=user-data.img,format=raw,id=cloud \
    -device virtio-blk-device,drive=hd0 \
    -net user,hostfwd=tcp::30022-:22 \
    -net nic -vnc :3 \
    -chardev socket,path=vscmi-guest0.sock,id=scmi0 \
    -device vhost-user-scmi-pci,chardev=scmi0,id=scmi \
    -object memory-backend-file,id=mem,size=2G,mem-path=shm,share=on \
    -append 'console=ttyAMA0 '