Setting up an environment for Rust Linux kernel development

Rust Linux kernel development Environment

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# Instructions for the video https://www.youtube.com/watch?v=tPs1uRqOnlk excluding setting up the env ( e.g. installing Rust and llvm)
#


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# Kernel
#

$ git clone --depth=1 https://github.com/Rust-for-Linux/linux.git
$ cd linux/
$ make allnoconfig qemu-busybox-min.config
$ make allnoconfig qemu-busybox-min.config rust.config
$ make LLVM=1 rustavailable # should say Rust is available if you have all dependencies
$ make LLVM=1 -j4

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# Busybox
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$ cd busybox
$ git clone --depth=1 https://github.com/mirror/busybox.git
$ make defconfig
$ make menuconfig # then from settings select use static libraries 
# make -j4
$ cd ./_install/
$ find . | cpio -H newc -o | gzip > ../ramdisk.img


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# running qemu
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$ cd linux/
$ qemu-system-x86_64 -nographic -kernel vmlinux # should panic
$ qemu-system-x86_64 -nographic -kernel vmlinux -initrd ../busybox/ramdisk.img # should start


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# adding proc filesystem to enable ps
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$ cd busybox/_install/
$ vim etc/init.d/rcS 
# then add this content inside 
# mkdir -p /proc 
# mount -t proc none /proc
$ find . | cpio -H newc -o | gzip > ../ramdisk.img
$ qemu-system-x86_64 -nographic -kernel vmlinux -initrd ../busybox/ramdisk.img # ps should work


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# enabling a rust sample kernel module
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$ make LLVM=1 menuconfig
# then select the samples from kernel hacking --> samples --> rust samples


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# enable networking
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$ cd busybox/_install/
$ vim etc/init.d/rcS 
# then add this content inside to enable loopback interface 
# ifconfig lo up
# udhcpc -i eth0
$ mkdir -p usr/share/udhcpc
$ cp ../examples/udhcp/simple.script usr/share/udhcpc/default.script
$ qemu-system-x86_64 -nographic -kernel vmlinux -initrd ../busybox/ramdisk.img -nic user,model=rtl8139
$ qemu-system-x86_64 -nographic -kernel vmlinux -initrd ../busybox/ramdisk.img -nic user,model=rtl8139,hostfwd=tcp::5556-:8080