Run cargo update for bootloader crate

.cargo/config.toml

@@ -0,0 +1,2 @@
+[unstable]
+bindeps = true

.github/workflows/code.yml

@@ -15,8 +15,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      - run: rustup target add x86_64-unknown-none
-      - run: cargo check --target x86_64-unknown-none
+      - run: cargo check
 
   test:
     name: Test
@@ -30,9 +29,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-
-      - run: rustup target add x86_64-unknown-none
-      - run: cargo build --target x86_64-unknown-none
+      - run: cargo build
 
   fmt:
     name: Check Formatting
@@ -46,7 +43,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-
-      - run: rustup target add x86_64-unknown-none
-      - run: rustup component add clippy
-      - run: cargo clippy --target x86_64-unknown-none
+      - run: cargo clippy

Cargo.lock

@@ -1,7 +1,459 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
+
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Cargo.toml

@@ -1,8 +1,15 @@
 [package]
-name = "kernel"
+name = "blog_os"
 version = "0.1.0"
 edition = "2021"
+default-run = "blog_os"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[workspace]
+members = ["kernel"]
 
 [dependencies]
+ovmf-prebuilt = "0.1.0-alpha"
+
+[build-dependencies]
+kernel = { path = "kernel", artifact = "bin", target = "x86_64-unknown-none" }
+bootloader = "0.11.3"

README.md

@@ -1,23 +1,16 @@
-# Blog OS (Minimal Kernel)
+# Blog OS (Booting)
 
-[![Build Status](https://github.com/phil-opp/blog_os/workflows/Code/badge.svg?branch=post-3.1)](https://github.com/phil-opp/blog_os/actions?query=workflow%3A%22Code%22+branch%3Apost-3.1)
+[![Build Status](https://github.com/phil-opp/blog_os/workflows/Code/badge.svg?branch=post-3.2)](https://github.com/phil-opp/blog_os/actions?query=workflow%3A%22Code%22+branch%3Apost-3.2)
 
-This repository contains the source code for the [Minimal Kernel][post] post of the [Writing an OS in Rust](https://os.phil-opp.com) series.
+This repository contains the source code for the [Booting][post] post of the [Writing an OS in Rust](https://os.phil-opp.com) series.
 
-[post]: https://os.phil-opp.com/minimal-kernel
+[post]: https://os.phil-opp.com/booting
 
 **Check out the [master branch](https://github.com/phil-opp/blog_os) for more information.**
 
 ## Building
 
-- Install the `x86_64-unknown-none` target using rustup:
-  ```
-  rustup target add x86_64-unknown-none
-  ```
-- Build by running:
-  ```
-  cargo build --target x86_64-unknown-none
-  ```
+TODO
 
 ## License
 

build.rs

@@ -0,0 +1,21 @@
+use bootloader::DiskImageBuilder;
+use std::{env, path::PathBuf};
+
+fn main() {
+    // set by cargo for the kernel artifact dependency
+    let kernel_path = env::var("CARGO_BIN_FILE_KERNEL").unwrap();
+    let disk_builder = DiskImageBuilder::new(PathBuf::from(kernel_path));
+
+    // specify output paths
+    let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
+    let uefi_path = out_dir.join("blog_os-uefi.img");
+    let bios_path = out_dir.join("blog_os-bios.img");
+
+    // create the disk images
+    disk_builder.create_uefi_image(&uefi_path).unwrap();
+    disk_builder.create_bios_image(&bios_path).unwrap();
+
+    // pass the disk image paths via environment variables
+    println!("cargo:rustc-env=UEFI_IMAGE={}", uefi_path.display());
+    println!("cargo:rustc-env=BIOS_IMAGE={}", bios_path.display());
+}

kernel/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "kernel"
+version = "0.1.0"
+edition = "2021"
+
+[[bin]]
+name = "kernel"
+test = false
+bench = false
+
+[dependencies]
+bootloader_api = "0.11.0"

kernel/src/main.rs

@@ -0,0 +1,23 @@
+#![no_std]
+#![no_main]
+
+use core::panic::PanicInfo;
+
+use bootloader_api::BootInfo;
+
+bootloader_api::entry_point!(kernel_main);
+
+fn kernel_main(boot_info: &'static mut BootInfo) -> ! {
+    if let Some(framebuffer) = boot_info.framebuffer.as_mut() {
+        for byte in framebuffer.buffer_mut() {
+            *byte = 0x90;
+        }
+    }
+    loop {}
+}
+
+/// This function is called on panic.
+#[panic_handler]
+fn panic(_info: &PanicInfo) -> ! {
+    loop {}
+}

rust-toolchain.toml

@@ -0,0 +1,5 @@
+[toolchain]
+channel = "nightly"
+profile = "default"
+targets = ["x86_64-unknown-none"]
+components = ["rust-src", "llvm-tools-preview"]

src/bin/qemu-bios.rs

@@ -0,0 +1,12 @@
+use std::{
+    env,
+    process::{self, Command},
+};
+
+fn main() {
+    let mut qemu = Command::new("qemu-system-x86_64");
+    qemu.arg("-drive");
+    qemu.arg(format!("format=raw,file={}", env!("BIOS_IMAGE")));
+    let exit_status = qemu.status().unwrap();
+    process::exit(exit_status.code().unwrap_or(-1));
+}

src/bin/qemu-uefi.rs

@@ -0,0 +1,13 @@
+use std::{
+    env,
+    process::{self, Command},
+};
+
+fn main() {
+    let mut qemu = Command::new("qemu-system-x86_64");
+    qemu.arg("-drive");
+    qemu.arg(format!("format=raw,file={}", env!("UEFI_IMAGE")));
+    qemu.arg("-bios").arg(ovmf_prebuilt::ovmf_pure_efi());
+    let exit_status = qemu.status().unwrap();
+    process::exit(exit_status.code().unwrap_or(-1));
+}

src/main.rs

@@ -1,15 +1,13 @@
-#![no_std]
-#![no_main]
+use std::{env, fs};
 
-use core::panic::PanicInfo;
+fn main() {
+    let current_exe = env::current_exe().unwrap();
+    let uefi_target = current_exe.with_file_name("uefi.img");
+    let bios_target = current_exe.with_file_name("bios.img");
 
-#[no_mangle]
-pub extern "C" fn _start() -> ! {
-    loop {}
-}
-
-/// This function is called on panic.
-#[panic_handler]
-fn panic(_info: &PanicInfo) -> ! {
-    loop {}
+    fs::copy(env!("UEFI_IMAGE"), &uefi_target).unwrap();
+    fs::copy(env!("BIOS_IMAGE"), &bios_target).unwrap();
+
+    println!("UEFI disk image at {}", uefi_target.display());
+    println!("BIOS disk image at {}", bios_target.display());
 }