RV64emu-sdk

This is a sdk for rv64emu, which contains busybox, linux kernel and opensbi.

Get source code

Because the linux kernel is TOO LARGE!!!!!, so use --depth 1 to clone the source code.

git submodule update --init --depth 1

How to build busybox

refer to busybox

Actrually, you can use the busybox binary in rootfs directory directly.Which is built with CFLAG CFLAGS += -march=rv64imac -mabi=lp64.

Create console for linux

the rootfs is based on busybox

cd rootfs
mkdir dev
sudo mknod dev/console c 5 1
sudo mknod dev/null c 1 3
sudo mknod dev/zero c 1 5

Run linux kernel on rv64emu

Before build linux kernel, you must create a console device for linux, refer to Create console for linux.

The defconfig file for linux kernel is rv64emu_linux_defconfig.The script rv64emu_run_linux.sh will build devicetree,linux kernel(with initrootfs support) and opensbi(with linux payload) automatically, and then run linux kernel on rv64emu.

You shall modify the script rv64emu_run_linux.sh to change the path of rv64emu and riscv-gnu-toolchain according to your environment.