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serial port

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mii443
2025-07-01 22:43:21 +09:00
parent cc059919bf
commit feedb40c58
7 changed files with 198 additions and 1 deletions
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3
nel_os_bootloader/run-qemu.sh
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@@ -13,4 +13,5 @@ qemu-system-x86_64 -enable-kvm \
-drive if=pflash,format=raw,readonly=on,file=OVMF_CODE.fd \
-drive if=pflash,format=raw,readonly=on,file=OVMF_VARS.fd \
-cdrom nel_os.iso \
-boot d
-boot d \
-s

125
nel_os_kernel/Cargo.lock generated
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@@ -2,6 +2,131 @@
# It is not intended for manual editing.
version = 4
[[package]]
name = "autocfg"
version = "1.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
[[package]]
name = "bit_field"
version = "0.10.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dc827186963e592360843fb5ba4b973e145841266c1357f7180c43526f2e5b61"
[[package]]
name = "bitflags"
version = "1.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
[[package]]
name = "bitflags"
version = "2.9.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1b8e56985ec62d17e9c1001dc89c88ecd7dc08e47eba5ec7c29c7b5eeecde967"
[[package]]
name = "lazy_static"
version = "1.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
dependencies = [
"spin 0.9.8",
]
[[package]]
name = "lock_api"
version = "0.4.13"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "96936507f153605bddfcda068dd804796c84324ed2510809e5b2a624c81da765"
dependencies = [
"autocfg",
"scopeguard",
]
[[package]]
name = "nel_os_kernel"
version = "0.1.0"
dependencies = [
"lazy_static",
"spin 0.10.0",
"uart_16550",
"x86_64",
]
[[package]]
name = "raw-cpuid"
version = "10.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6c297679cb867470fa8c9f67dbba74a78d78e3e98d7cf2b08d6d71540f797332"
dependencies = [
"bitflags 1.3.2",
]
[[package]]
name = "rustversion"
version = "1.0.21"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8a0d197bd2c9dc6e53b84da9556a69ba4cdfab8619eb41a8bd1cc2027a0f6b1d"
[[package]]
name = "scopeguard"
version = "1.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
[[package]]
name = "spin"
version = "0.9.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
[[package]]
name = "spin"
version = "0.10.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d5fe4ccb98d9c292d56fec89a5e07da7fc4cf0dc11e156b41793132775d3e591"
dependencies = [
"lock_api",
]
[[package]]
name = "uart_16550"
version = "0.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e492212ac378a5e00da953718dafb1340d9fbaf4f27d6f3c5cab03d931d1c049"
dependencies = [
"bitflags 2.9.1",
"rustversion",
"x86",
]
[[package]]
name = "volatile"
version = "0.4.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "442887c63f2c839b346c192d047a7c87e73d0689c9157b00b53dcc27dd5ea793"
[[package]]
name = "x86"
version = "0.52.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2781db97787217ad2a2845c396a5efe286f87467a5810836db6d74926e94a385"
dependencies = [
"bit_field",
"bitflags 1.3.2",
"raw-cpuid",
]
[[package]]
name = "x86_64"
version = "0.15.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0f042214de98141e9c8706e8192b73f56494087cc55ebec28ce10f26c5c364ae"
dependencies = [
"bit_field",
"bitflags 2.9.1",
"rustversion",
"volatile",
]

4
nel_os_kernel/Cargo.toml
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@@ -4,3 +4,7 @@ version = "0.1.0"
edition = "2024"
[dependencies]
lazy_static = { version = "1.5.0", features = ["spin_no_std"] }
spin = "0.10.0"
uart_16550 = "0.3.2"
x86_64 = "0.15.2"

6
nel_os_kernel/src/constant.rs Normal file
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@@ -0,0 +1,6 @@
pub const BANNER: &str = r#" _
_ __ ___| | ___ ___
| '_ \ / _ \ | / _ \/ __|
| | | | __/ | | (_) \__ \
|_| |_|\___|_|___\___/|___/
|_____| "#;

14
nel_os_kernel/src/logging.rs Normal file
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@@ -0,0 +1,14 @@
#[macro_export]
macro_rules! info {
($($arg:tt)*) => ($crate::print!("[info] {}\n", format_args!($($arg)*)));
}
#[macro_export]
macro_rules! error {
($($arg:tt)*) => ($crate::print!("[error] {}\n", format_args!($($arg)*)));
}
#[macro_export]
macro_rules! warn {
($($arg:tt)*) => ($crate::print!("[warn] {}\n", format_args!($($arg)*)));
}

9
nel_os_kernel/src/main.rs
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@@ -1,10 +1,18 @@
#![no_std]
#![no_main]
pub mod constant;
pub mod logging;
pub mod serial;
use core::arch::asm;
use core::panic::PanicInfo;
use core::ptr::addr_of;
use crate::constant::BANNER;
pub const PKG_VERSION: &str = env!("CARGO_PKG_VERSION");
pub const PKG_NAME: &str = env!("CARGO_PKG_NAME");
const STACK_SIZE: usize = 1024 * 1024;
#[repr(C, align(16))]
@@ -52,5 +60,6 @@ fn hlt_loop() -> ! {
#[unsafe(no_mangle)]
pub extern "sysv64" fn main() {
println!("{} v{}", BANNER, PKG_VERSION);
hlt_loop();
}

38
nel_os_kernel/src/serial.rs Normal file
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@@ -0,0 +1,38 @@
use lazy_static::lazy_static;
use spin::Mutex;
use uart_16550::SerialPort;
lazy_static! {
pub static ref SERIAL1: Mutex<SerialPort> = {
let mut serial_port = unsafe { SerialPort::new(0x3F8) };
serial_port.init();
Mutex::new(serial_port)
};
}
pub fn _print(args: ::core::fmt::Arguments) {
use core::fmt::Write;
use x86_64::instructions::interrupts;
interrupts::without_interrupts(|| {
SERIAL1
.lock()
.write_fmt(args)
.expect("Printing to serial failed");
});
}
#[macro_export]
macro_rules! print {
($($arg:tt)*) => {
$crate::serial::_print(format_args!($($arg)*));
};
}
#[macro_export]
macro_rules! println {
() => ($crate::serial_print!("\n"));
($fmt:expr) => ($crate::print!(concat!($fmt, "\n")));
($fmt:expr, $($arg:tt)*) => ($crate::print!(
concat!($fmt, "\n"), $($arg)*));
}