notes.txt

# how to obtain buildroot.config:
# -------------------------------

$ make raspberrypi3_64_defconfig 
$ make menuconfig
# - Toolchain / C library: set to glibc
# - Target packages / Miscellaneous: add QEMU
# - Target packages / Development tools: add git, make
#                                    Enable specific targets: "aarch64-softmmu"
# - Target packages / Networking applications: add iproute2, openssh, ntp and ntp/sntp/ntpq
# - Target packages > Libraries > Hardware handling: add libusb, uhubctl
# - Target packages > Libraries > Networking : add usb-redir
# - Target packages > Shell and utilities : add screen
# - Target packages > Interpreter languages and scripting: add python3
#                                                          add External python modules / python-pip
#                                                          add Core python modules / curses, readline, ssl
# - Kernel / Kernel configuration: set to "Using a custom (def)config file"
#                                  Configuration file path: "/root/buildroot-2019.08/kernel.config"
# - Filesystem images / ext2/3/4 root filesystem: set exact size to 400M
# - System configuration / System hostname: set to "walt-vpn"
# - System configuration / System banner: set to "Welcome to walt vpn node"
# - System configuration / remount root filesystem read-write during boot: disable
# - System configuration / Root filesystem overlay directories: set to "$(TOPDIR)/../overlay"

# how to obtain kernel.config
# ---------------------------

$ make raspberrypi3_64_defconfig 
$ make linux-menuconfig
# - set "Virtualization"
# - Virtualization: set "Kernel-based Virtual Machine (KVM) support",
#                       "Cross-endian support for vhost" and 
#                       "Host kernel accelerator for virtio net" (Module)