finchie/HexOS - Change K5LGXRU2WR2E3V35X37CVLWAU7UGVRQ22JAUYIDCFNP7JHHUIU7AC

Create simple kernel toolchain

Currently does nothing except spin the CPU. Most importantly this has been about setting up the build environment for actual kernel development that will hopefully happen later!

Created by finchie on December 25, 2023

K5LGXRU2WR2E3V35X37CVLWAU7UGVRQ22JAUYIDCFNP7JHHUIU7AC

Dependencies

[2] H7UKHZHHMLQZKOEQFEQKBKQJ74OLMUN7LO2ZDX7NG7SXHERVFABAC

In channels

main

Change contents

File addition: runner (d--x------)
[2.1]
File addition: src (d--x------)
[0.18]

File addition: main.rs (----------)

[0.35]

fn main() {
    // Create the QEMU command
    let mut cmd = std::process::Command::new("qemu-system-x86_64");
    // Add all static QEMU options
    cmd.args([
        "-no-reboot", // Don't get stuck in a boot loop
        // Debugging support
        "-gdb",
        "tcp::1234",
        // Exit without having to implement shutdown properly
        // See https://os.phil-opp.com/testing/#exiting-qemu
        "-device",
        "isa-debug-exit,iobase=0xf4,iosize=0x04",
        // Print serial output to terminal
        "-serial",
        "stdio",
    ]);
    // Get the kernel path as determined by the build script
    let kernel_path = env!("KERNEL_PATH");
    // Point to UEFI firmware
    cmd.arg("-bios").arg(ovmf_prebuilt::ovmf_pure_efi());
    // Point to kernel binary
    cmd.arg("-drive")
        .arg(format!("format=raw,file={kernel_path}"));
    // Spawn and run QEMU
    let mut child = cmd.spawn().unwrap();
    child.wait().unwrap();
}

File addition: build.rs (----------)

[0.18]

use std::path::PathBuf;
fn main() {
    let out_dir = PathBuf::from(std::env::var_os("OUT_DIR").unwrap());
    let kernel = PathBuf::from(std::env::var_os("CARGO_BIN_FILE_HEX_KERNEL_hex_kernel").unwrap());
    // Create UEFI kernel
    let kernel_path = out_dir.join("kernel.img");
    bootloader::UefiBoot::new(&kernel)
        .create_disk_image(&kernel_path)
        .unwrap();
    // Pass image path to main.rs
    println!("cargo:rustc-env=KERNEL_PATH={}", kernel_path.display());
}

File addition: Cargo.toml (----------)

[0.18]

[package]
name = "hex_runner"
version = "0.1.0"
edition = "2021"
default-run = "hex_runner"
[build-dependencies]
bootloader = "0.11.4"
hex_kernel = { path = "../kernel", artifact = "bin", target = "x86_64-unknown-none" }
[dependencies]
ovmf-prebuilt = "0.1.0-alpha.1"

File addition: kernel (d--x------)
[2.1]
File addition: src (d--x------)
[0.1886]

File addition: main.rs (----------)

[0.1903]

#![no_std]
#![no_main]
use core::panic::PanicInfo;
use bootloader_api::{entry_point, BootInfo};
entry_point!(main);
#[no_mangle]
pub fn main(_boot_info: &'static mut BootInfo) -> ! {
    loop {}
}
#[panic_handler]
fn panic(_info: &PanicInfo) -> ! {
    loop {}
}

File addition: Cargo.toml (----------)

[0.1886]

[package]
name = "hex_kernel"
version = "0.1.0"
edition = "2021"
[dependencies]
bootloader_api = "0.11.4"

File addition: Cargo.toml (----------)

[2.1]

[workspace]
resolver = "2"
members = ["kernel", "runner"]
[profile.dev]
panic = "abort"
[profile.release]
panic = "abort"

File addition: Cargo.lock (----------)

[2.1]

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File addition: .ignore (----------)
[2.1]
```
.git
.DS_Store
target/
```
File addition: .cargo (d--x------)
[2.1]

File addition: config.toml (----------)

[0.30756]

[unstable]
bindeps = true
codegen-backend = true
# Force llvm codegen, cranelift is broken
[profile.dev]
codegen-backend = "llvm"

Create simple kernel toolchain

Dependencies

In channels

Change contents

File addition: runner (d--x------)

File addition: src (d--x------)

File addition: main.rs (----------)

File addition: build.rs (----------)

File addition: Cargo.toml (----------)

File addition: kernel (d--x------)

File addition: src (d--x------)

File addition: main.rs (----------)

File addition: Cargo.toml (----------)

File addition: Cargo.toml (----------)

File addition: Cargo.lock (----------)

File addition: .ignore (----------)

File addition: .cargo (d--x------)

File addition: config.toml (----------)