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1 Commits
add-serial
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9401ebccfc
| Author | SHA1 | Date | |
|---|---|---|---|
9401ebccfc
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@@ -1,4 +0,0 @@
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[unstable]
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# enable the unstable artifact-dependencies feature, see
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# https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#artifact-dependencies
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bindeps = true
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757
Cargo.lock
generated
757
Cargo.lock
generated
@@ -1,757 +0,0 @@
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|
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|
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|
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[[package]]
|
||||
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|
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|
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|
||||
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|
||||
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|
||||
]
|
||||
32
Cargo.toml
32
Cargo.toml
@@ -1,34 +1,6 @@
|
||||
[workspace]
|
||||
resolver = "3"
|
||||
members = [
|
||||
"kernel"
|
||||
]
|
||||
|
||||
[workspace.package]
|
||||
version = "0.1.0"
|
||||
edition = "2024"
|
||||
license-file = "LICENSE"
|
||||
authors = [
|
||||
"Noah Knegt <personal@noahknegt.com>"
|
||||
]
|
||||
readme = "README.md"
|
||||
publish = false
|
||||
|
||||
[workspace.dependencies]
|
||||
|
||||
|
||||
[package]
|
||||
name = "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" }
|
||||
version = "0.1.0"
|
||||
edition = "2024"
|
||||
|
||||
[dependencies]
|
||||
ovmf-prebuilt = "0.1.0-alpha.1"
|
||||
|
||||
2
LICENSE
2
LICENSE
@@ -1,6 +1,6 @@
|
||||
MIT License
|
||||
|
||||
Copyright (c) 2025 Noah Knegt <personal@noahknegt.com>
|
||||
Copyright (c) 2025 noah.knegt
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
|
||||
associated documentation files (the "Software"), to deal in the Software without restriction, including
|
||||
|
||||
22
README.md
22
README.md
@@ -2,25 +2,3 @@
|
||||
|
||||
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=<path-to-project>/target/<config>/FerrOS of=/dev/sdX bs=1M status=progress
|
||||
```
|
||||
|
||||
21
build.rs
21
build.rs
@@ -1,21 +0,0 @@
|
||||
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());
|
||||
}
|
||||
@@ -1,28 +0,0 @@
|
||||
[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" }
|
||||
conquer-once = { version = "0.4.0", default-features = false }
|
||||
log = "0.4.17"
|
||||
spinning_top = "0.3.0"
|
||||
uart_16550 = "0.3.2"
|
||||
x86_64 = "0.15.2"
|
||||
|
||||
[dependencies.noto-sans-mono-bitmap]
|
||||
version = "0.3.1"
|
||||
default-features = false
|
||||
features = [
|
||||
"regular",
|
||||
"size_16",
|
||||
"unicode-basic-latin",
|
||||
# required for the fallback char '<27>'
|
||||
"unicode-specials",
|
||||
]
|
||||
@@ -1,154 +0,0 @@
|
||||
use bootloader_api::info::{FrameBufferInfo, PixelFormat};
|
||||
use core::{fmt, ptr};
|
||||
use font_constants::BACKUP_CHAR;
|
||||
use noto_sans_mono_bitmap::{
|
||||
get_raster, get_raster_width, FontWeight, RasterHeight, RasterizedChar,
|
||||
};
|
||||
|
||||
/// Additional vertical space between lines
|
||||
const LINE_SPACING: usize = 2;
|
||||
/// Additional horizontal space between characters.
|
||||
const LETTER_SPACING: usize = 0;
|
||||
|
||||
/// Padding from the border. Prevent that font is too close to border.
|
||||
const BORDER_PADDING: usize = 1;
|
||||
|
||||
/// Constants for the usage of the [`noto_sans_mono_bitmap`] crate.
|
||||
mod font_constants {
|
||||
use super::*;
|
||||
|
||||
/// Height of each char raster. The font size is ~0.84% of this. Thus, this is the line height that
|
||||
/// enables multiple characters to be side-by-side and appear optically in one line in a natural way.
|
||||
pub const CHAR_RASTER_HEIGHT: RasterHeight = RasterHeight::Size16;
|
||||
|
||||
/// The width of each single symbol of the mono space font.
|
||||
pub const CHAR_RASTER_WIDTH: usize = get_raster_width(FontWeight::Regular, CHAR_RASTER_HEIGHT);
|
||||
|
||||
/// Backup character if a desired symbol is not available by the font.
|
||||
/// The '<27>' character requires the feature "unicode-specials".
|
||||
pub const BACKUP_CHAR: char = '<27>';
|
||||
|
||||
pub const FONT_WEIGHT: FontWeight = FontWeight::Regular;
|
||||
}
|
||||
|
||||
/// Returns the raster of the given char or the raster of [`font_constants::BACKUP_CHAR`].
|
||||
fn get_char_raster(c: char) -> RasterizedChar {
|
||||
fn get(c: char) -> Option<RasterizedChar> {
|
||||
get_raster(
|
||||
c,
|
||||
font_constants::FONT_WEIGHT,
|
||||
font_constants::CHAR_RASTER_HEIGHT,
|
||||
)
|
||||
}
|
||||
get(c).unwrap_or_else(|| get(BACKUP_CHAR).expect("Should get raster of backup char."))
|
||||
}
|
||||
|
||||
/// Allows logging text to a pixel-based framebuffer.
|
||||
pub struct FrameBufferWriter {
|
||||
framebuffer: &'static mut [u8],
|
||||
info: FrameBufferInfo,
|
||||
x_pos: usize,
|
||||
y_pos: usize,
|
||||
}
|
||||
|
||||
impl FrameBufferWriter {
|
||||
/// Creates a new logger that uses the given framebuffer.
|
||||
pub fn new(framebuffer: &'static mut [u8], info: FrameBufferInfo) -> Self {
|
||||
let mut logger = Self {
|
||||
framebuffer,
|
||||
info,
|
||||
x_pos: 0,
|
||||
y_pos: 0,
|
||||
};
|
||||
logger.clear();
|
||||
logger
|
||||
}
|
||||
|
||||
fn newline(&mut self) {
|
||||
self.y_pos += font_constants::CHAR_RASTER_HEIGHT.val() + LINE_SPACING;
|
||||
self.carriage_return()
|
||||
}
|
||||
|
||||
fn carriage_return(&mut self) {
|
||||
self.x_pos = BORDER_PADDING;
|
||||
}
|
||||
|
||||
/// Erases all text on the screen. Resets `self.x_pos` and `self.y_pos`.
|
||||
pub fn clear(&mut self) {
|
||||
self.x_pos = BORDER_PADDING;
|
||||
self.y_pos = BORDER_PADDING;
|
||||
self.framebuffer.fill(0);
|
||||
}
|
||||
|
||||
fn width(&self) -> usize {
|
||||
self.info.width
|
||||
}
|
||||
|
||||
fn height(&self) -> usize {
|
||||
self.info.height
|
||||
}
|
||||
|
||||
/// Writes a single char to the framebuffer. Takes care of special control characters, such as
|
||||
/// newlines and carriage returns.
|
||||
fn write_char(&mut self, c: char) {
|
||||
match c {
|
||||
'\n' => self.newline(),
|
||||
'\r' => self.carriage_return(),
|
||||
c => {
|
||||
let new_xpos = self.x_pos + font_constants::CHAR_RASTER_WIDTH;
|
||||
if new_xpos >= self.width() {
|
||||
self.newline();
|
||||
}
|
||||
let new_ypos =
|
||||
self.y_pos + font_constants::CHAR_RASTER_HEIGHT.val() + BORDER_PADDING;
|
||||
if new_ypos >= self.height() {
|
||||
self.clear();
|
||||
}
|
||||
self.write_rendered_char(get_char_raster(c));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Prints a rendered char into the framebuffer.
|
||||
/// Updates `self.x_pos`.
|
||||
fn write_rendered_char(&mut self, rendered_char: RasterizedChar) {
|
||||
for (y, row) in rendered_char.raster().iter().enumerate() {
|
||||
for (x, byte) in row.iter().enumerate() {
|
||||
self.write_pixel(self.x_pos + x, self.y_pos + y, *byte);
|
||||
}
|
||||
}
|
||||
self.x_pos += rendered_char.width() + LETTER_SPACING;
|
||||
}
|
||||
|
||||
fn write_pixel(&mut self, x: usize, y: usize, intensity: u8) {
|
||||
let pixel_offset = y * self.info.stride + x;
|
||||
let color = match self.info.pixel_format {
|
||||
PixelFormat::Rgb => [intensity, intensity, intensity / 2, 0],
|
||||
PixelFormat::Bgr => [intensity / 2, intensity, intensity, 0],
|
||||
PixelFormat::U8 => [if intensity > 200 { 0xf } else { 0 }, 0, 0, 0],
|
||||
other => {
|
||||
// set a supported (but invalid) pixel format before panicking to avoid a double
|
||||
// panic; it might not be readable though
|
||||
self.info.pixel_format = PixelFormat::Rgb;
|
||||
panic!("pixel format {:?} not supported in logger", other)
|
||||
}
|
||||
};
|
||||
let bytes_per_pixel = self.info.bytes_per_pixel;
|
||||
let byte_offset = pixel_offset * bytes_per_pixel;
|
||||
self.framebuffer[byte_offset..(byte_offset + bytes_per_pixel)]
|
||||
.copy_from_slice(&color[..bytes_per_pixel]);
|
||||
let _ = unsafe { ptr::read_volatile(&self.framebuffer[byte_offset]) };
|
||||
}
|
||||
}
|
||||
|
||||
unsafe impl Send for FrameBufferWriter {}
|
||||
unsafe impl Sync for FrameBufferWriter {}
|
||||
|
||||
impl fmt::Write for FrameBufferWriter {
|
||||
fn write_str(&mut self, s: &str) -> fmt::Result {
|
||||
for c in s.chars() {
|
||||
self.write_char(c);
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
@@ -1,95 +0,0 @@
|
||||
use bootloader_api::info::FrameBufferInfo;
|
||||
use conquer_once::spin::OnceCell;
|
||||
use core::fmt::Write;
|
||||
use spinning_top::Spinlock;
|
||||
|
||||
use super::*;
|
||||
|
||||
/// The global logger instance used for the `log` crate.
|
||||
static LOGGER: OnceCell<LockedLogger> = OnceCell::uninit();
|
||||
|
||||
/// A logger instance protected by a spinlock.
|
||||
struct LockedLogger {
|
||||
framebuffer: Option<Spinlock<framebuffer::FrameBufferWriter>>,
|
||||
serial: Option<Spinlock<serial::SerialPort>>
|
||||
}
|
||||
|
||||
impl LockedLogger {
|
||||
/// Create a new instance that logs to the given framebuffer.
|
||||
pub fn new(
|
||||
framebuffer: &'static mut [u8],
|
||||
info: FrameBufferInfo,
|
||||
) -> Self {
|
||||
let framebuffer = Some(Spinlock::new(framebuffer::FrameBufferWriter::new(framebuffer, info)));
|
||||
let serial = Some(Spinlock::new(unsafe { serial::SerialPort::init() }));
|
||||
|
||||
LockedLogger {
|
||||
framebuffer,
|
||||
serial
|
||||
}
|
||||
}
|
||||
|
||||
/// Force-unlocks the logger to prevent a deadlock.
|
||||
///
|
||||
/// ## Safety
|
||||
/// This method is not memory safe and should be only used when absolutely necessary.
|
||||
pub unsafe fn force_unlock(&self) {
|
||||
if let Some(framebuffer) = &self.framebuffer {
|
||||
unsafe { framebuffer.force_unlock() };
|
||||
}
|
||||
|
||||
if let Some(serial) = &self.serial {
|
||||
unsafe { serial.force_unlock() };
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl log::Log for LockedLogger {
|
||||
fn enabled(&self, _metadata: &log::Metadata) -> bool {
|
||||
true
|
||||
}
|
||||
|
||||
fn log(&self, record: &log::Record) {
|
||||
if let Some(framebuffer) = &self.framebuffer {
|
||||
let mut framebuffer = framebuffer.lock();
|
||||
writeln!(framebuffer, "{:5}: {}", record.level(), record.args()).unwrap();
|
||||
}
|
||||
|
||||
if let Some(serial) = &self.serial {
|
||||
let mut serial = serial.lock();
|
||||
writeln!(serial, "{:5}: {}", record.level(), record.args()).unwrap();
|
||||
}
|
||||
}
|
||||
|
||||
fn flush(&self) {}
|
||||
}
|
||||
|
||||
/// Initialize a text-based logger using the given pixel-based framebuffer as output.
|
||||
pub fn init_logger(
|
||||
framebuffer: &'static mut [u8],
|
||||
info: FrameBufferInfo,
|
||||
) {
|
||||
let logger = LOGGER.get_or_init(move || {
|
||||
LockedLogger::new(
|
||||
framebuffer,
|
||||
info,
|
||||
)
|
||||
});
|
||||
log::set_logger(logger).expect("logger already set");
|
||||
#[cfg(debug_assertions)]
|
||||
log::set_max_level(log::LevelFilter::Debug);
|
||||
|
||||
#[cfg(not(debug_assertions))]
|
||||
log::set_max_level(log::LevelFilter::Info);
|
||||
|
||||
log::debug!("Framebuffer info: {:?}", info);
|
||||
}
|
||||
|
||||
pub fn force_unlock() {
|
||||
unsafe {
|
||||
LOGGER
|
||||
.get()
|
||||
.map(|l| l.force_unlock())
|
||||
};
|
||||
}
|
||||
|
||||
@@ -1,5 +0,0 @@
|
||||
pub mod logger;
|
||||
mod framebuffer;
|
||||
mod serial;
|
||||
|
||||
pub use logger::*;
|
||||
@@ -1,28 +0,0 @@
|
||||
use core::fmt;
|
||||
|
||||
pub struct SerialPort {
|
||||
port: uart_16550::SerialPort,
|
||||
}
|
||||
|
||||
impl SerialPort {
|
||||
/// # Safety
|
||||
///
|
||||
/// unsafe because this function must only be called once
|
||||
pub unsafe fn init() -> Self {
|
||||
let mut port = unsafe { uart_16550::SerialPort::new(0x3F8) };
|
||||
port.init();
|
||||
Self { port }
|
||||
}
|
||||
}
|
||||
|
||||
impl fmt::Write for SerialPort {
|
||||
fn write_str(&mut self, s: &str) -> fmt::Result {
|
||||
for char in s.bytes() {
|
||||
match char {
|
||||
b'\n' => self.port.write_str("\r\n").unwrap(),
|
||||
byte => self.port.send(byte),
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
@@ -1,37 +0,0 @@
|
||||
#![no_std]
|
||||
#![no_main]
|
||||
|
||||
use bootloader_api::{
|
||||
config::{BootloaderConfig, Mapping},
|
||||
entry_point, BootInfo
|
||||
};
|
||||
|
||||
mod logger;
|
||||
|
||||
pub static BOOTLOADER_CONFIG: BootloaderConfig = {
|
||||
let mut config = BootloaderConfig::new_default();
|
||||
config.mappings.physical_memory = Some(Mapping::Dynamic);
|
||||
config
|
||||
};
|
||||
|
||||
entry_point!(kernel_main);
|
||||
|
||||
fn kernel_main(boot_info: &'static mut BootInfo) -> ! {
|
||||
let info = boot_info.framebuffer.as_ref().unwrap().info();
|
||||
let buffer = boot_info.framebuffer.as_mut().unwrap().buffer_mut();
|
||||
|
||||
logger::init_logger(buffer, info);
|
||||
|
||||
log::info!("Hello World from KERNEL");
|
||||
|
||||
// Endless loop as the kernel must stay running
|
||||
loop {}
|
||||
}
|
||||
|
||||
#[panic_handler]
|
||||
#[cfg(not(test))]
|
||||
fn panic(info: &core::panic::PanicInfo) -> ! {
|
||||
logger::force_unlock();
|
||||
log::error!("{}", info);
|
||||
loop {}
|
||||
}
|
||||
@@ -1,13 +0,0 @@
|
||||
[toolchain]
|
||||
# The nightly version that was build on 24-07-2025 is the last known working version,
|
||||
# the c-int-width definition for rust targets has changed from a string to a u16
|
||||
channel = "nightly-2025-07-24"
|
||||
targets = [
|
||||
"x86_64-unknown-none"
|
||||
]
|
||||
components = [
|
||||
"clippy",
|
||||
"rustfmt",
|
||||
"rust-src",
|
||||
"llvm-tools-preview"
|
||||
]
|
||||
25
src/main.rs
25
src/main.rs
@@ -1,25 +0,0 @@
|
||||
// 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}"));
|
||||
}
|
||||
|
||||
cmd.arg("-serial").arg("stdio");
|
||||
|
||||
let mut child = cmd.spawn().unwrap();
|
||||
child.wait().unwrap();
|
||||
}
|
||||
Reference in New Issue
Block a user