39 lines
1.0 KiB
Rust
39 lines
1.0 KiB
Rust
use lazy_static::lazy_static;
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use spin::Mutex;
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use uart_16550::SerialPort;
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lazy_static! {
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pub static ref SERIAL: Mutex<SerialPort> = {
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// 0x3F8 is a standard port addr for UART.
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// It requires multiple ports but SerialPort implementation calculates rest of the ports
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// automatically
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let mut serial_port = unsafe { SerialPort::new(0x3F8) };
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serial_port.init();
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Mutex::new(serial_port)
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};
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}
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#[doc(hidden)]
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pub fn _print(args: ::core::fmt::Arguments) {
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use core::fmt::Write;
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SERIAL
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.lock()
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.write_fmt(args)
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.expect("Printing to serial failed!");
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}
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// Print to Serial Interface
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#[macro_export]
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macro_rules! serial_print {
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($($arg:tt)*) => {
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$crate::serial::_print(format_args!($($arg)*));
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};
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}
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#[macro_export]
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macro_rules! serial_println {
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() => ($crate::serial_print!("\n"));
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($fmt:expr) => ($crate::serial_print!(concat!($fmt, "\n")));
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($fmt:expr, $($arg:tt)*) => ($crate::serial_print!(concat!($fmt, "\n"), $($arg)*));
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}
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