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"FerrOS" +version.workspace = true +authors.workspace = true +edition.workspace = true +license-file.workspace = true +readme.workspace = true +publish.workspace = true + +[build-dependencies] +bootloader = { version = "0.11.10" } +kernel = { path = "kernel", artifact = "bin", target = "x86_64-unknown-none" } + +[dependencies] +ovmf-prebuilt = "0.1.0-alpha.1" diff --git a/README.md b/README.md index 1f26889..83e5ba0 100644 --- a/README.md +++ b/README.md @@ -1,3 +1,26 @@ # FerrOS -A custom OS written in Rust \ No newline at end of file +A custom OS written in Rust + +## Running the OS + +You can start running the OS by executing: + +```bash +cargo run +``` + +This assumes that you have a rust environment setup and cargo is available, the easiest way to do this is with [rustup](https://rustup.rs/). + +### Dependencies + +You should have the command `qemu-system-x86_64` available on your system to run the OS through an emulator, although it is also possible to flash it on an USB-drive and boot it directly. +For debian users you can install the [`qemu-system-x86`](https://packages.debian.org/sid/qemu-system-x86) package and that will make sure all dependencies for the emulator are correctly installed. + +### Install to USB-drive + +To install it to an USB-drive you can use the following command if you are on a linux system. + +```bash +sudo dd if=/target//FerrOS of=/dev/sdX bs=1M status=progress +``` diff --git a/build.rs b/build.rs new file mode 100644 index 0000000..b380778 --- /dev/null +++ b/build.rs @@ -0,0 +1,21 @@ +use std::path::PathBuf; + +fn main() { + // set by cargo, build scripts should use this directory for output files + let out_dir = PathBuf::from(std::env::var_os("OUT_DIR").unwrap()); + // set by cargo's artifact dependency feature, see + // https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#artifact-dependencies + let kernel = PathBuf::from(std::env::var_os("CARGO_BIN_FILE_KERNEL_kernel").unwrap()); + + // create an UEFI disk image (optional) + let uefi_path = out_dir.join("uefi.img"); + bootloader::UefiBoot::new(&kernel).create_disk_image(&uefi_path).unwrap(); + + // create a BIOS disk image + let bios_path = out_dir.join("bios.img"); + bootloader::BiosBoot::new(&kernel).create_disk_image(&bios_path).unwrap(); + + // pass the disk image paths as env variables to the `main.rs` + println!("cargo:rustc-env=UEFI_PATH={}", uefi_path.display()); + println!("cargo:rustc-env=BIOS_PATH={}", bios_path.display()); +} diff --git a/kernel/Cargo.toml b/kernel/Cargo.toml new file mode 100644 index 0000000..b1c9252 --- /dev/null +++ b/kernel/Cargo.toml @@ -0,0 +1,12 @@ +[package] +name = "kernel" +version = "0.1.0" + +edition.workspace = true +license-file.workspace = true +authors.workspace = true +readme.workspace = true +publish.workspace = true + +[dependencies] +bootloader_api = { version = "0.11.10" } diff --git a/kernel/src/main.rs b/kernel/src/main.rs new file mode 100644 index 0000000..d584a9f --- /dev/null +++ b/kernel/src/main.rs @@ -0,0 +1,16 @@ +#![no_std] +#![no_main] + +use bootloader_api::{entry_point, BootInfo}; + +entry_point!(kernel_main); + +fn kernel_main(boot_info: &'static mut BootInfo) -> ! { + loop {} +} + +#[panic_handler] +#[cfg(not(test))] +fn panic(info: &core::panic::PanicInfo) -> ! { + loop {} +} diff --git a/rust-toolchain.toml b/rust-toolchain.toml new file mode 100644 index 0000000..98a5f91 --- /dev/null +++ b/rust-toolchain.toml @@ -0,0 +1,11 @@ +[toolchain] +channel = "nightly" +targets = [ + "x86_64-unknown-none" +] +components = [ + "clippy", + "rustfmt", + "rust-src", + "llvm-tools-preview" +] diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..b211245 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,20 @@ +// Helper amin that will allow the kernel of FerrOS to be run through QEMU with just the "cargo run" command + +fn main() { + // read env variables that were set in build script + let uefi_path = env!("UEFI_PATH"); + let bios_path = env!("BIOS_PATH"); + + // choose whether to start the UEFI or BIOS image + let uefi = true; + + let mut cmd = std::process::Command::new("qemu-system-x86_64"); + if uefi { + cmd.arg("-bios").arg(ovmf_prebuilt::ovmf_pure_efi()); + cmd.arg("-drive").arg(format!("format=raw,file={uefi_path}")); + } else { + cmd.arg("-drive").arg(format!("format=raw,file={bios_path}")); + } + let mut child = cmd.spawn().unwrap(); + child.wait().unwrap(); +}