Cargo.lock

@@ -19,8 +19,6 @@ name = "julios"
 version = "0.1.0"
 dependencies = [
  "lazy_static",
- "pc-keyboard",
- "pic8259",
  "spin",
  "volatile 0.2.7",
  "x86_64",
@@ -35,21 +33,6 @@ dependencies = [
  "spin",
 ]
 
-[[package]]
-name = "pc-keyboard"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c6f2d937e3b8d63449b01401e2bae4041bc9dd1129c2e3e0d239407cf6635ac"
-
-[[package]]
-name = "pic8259"
-version = "0.10.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24ec21f514e2e16e94649f1d041ca4a7069b512c037ac156360652a775e6229d"
-dependencies = [
- "x86_64",
-]
-
 [[package]]
 name = "spin"
 version = "0.5.2"

Cargo.toml

@@ -12,8 +12,6 @@ crate-type = ["staticlib"]
 volatile = "0.2.6"
 spin = "0.5.2"
 x86_64 = "0.14.2"
-pic8259 = "0.10.1"
-pc-keyboard = "0.5.0"
 
 [dependencies.lazy_static]
 version = "1.0"

src/gdt.rs

@@ -1,11 +1,8 @@
 use crate::println;
 use lazy_static::lazy_static;
-use x86_64::instructions::{
-    segmentation::{Segment, CS},
-    tables::load_tss,
-};
-use x86_64::structures::gdt::{Descriptor, GlobalDescriptorTable, SegmentSelector};
-use x86_64::{structures::tss::TaskStateSegment, VirtAddr};
+use x86_64::{VirtAddr, structures::tss::TaskStateSegment};
+use x86_64::structures::gdt::{GlobalDescriptorTable, Descriptor, SegmentSelector};
+use x86_64::instructions::{segmentation::{CS, Segment}, tables::load_tss};
 
 pub const DOUBLE_FAULT_IST_INDEX: u16 = 0;
 
@@ -29,13 +26,7 @@ lazy_static! {
         let mut gdt = GlobalDescriptorTable::new();
         let code_selector = gdt.add_entry(Descriptor::kernel_code_segment());
         let tss_selector = gdt.add_entry(Descriptor::tss_segment(&TSS));
-        (
-            gdt,
-            Selectors {
-                code_selector,
-                tss_selector,
-            },
-        )
+        (gdt, Selectors { code_selector, tss_selector })
     };
 }
 

src/interrupts.rs

@@ -1,49 +1,17 @@
 use crate::gdt;
+use crate::println;
 use crate::vga::{self, Color, ColorCode};
-use crate::{print, println};
 use lazy_static::lazy_static;
-use pc_keyboard::{layouts, DecodedKey, HandleControl, Keyboard, ScancodeSet1};
-use pic8259::ChainedPics;
-use spin::{self, Mutex};
-use x86_64::instructions::port::Port;
 use x86_64::structures::idt::{InterruptDescriptorTable, InterruptStackFrame};
 
-pub const PIC_1_OFFSET: u8 = 32;
-pub const PIC_2_OFFSET: u8 = PIC_1_OFFSET + 8;
-
-pub const PS2_CONTROLLER_PORT: u16 = 0x60;
-
-#[derive(Debug, Clone, Copy)]
-#[repr(u8)]
-pub enum InterruptIndex {
-    Timer = PIC_1_OFFSET,
-    Keyboard,
-}
-
-impl InterruptIndex {
-    fn as_u8(self) -> u8 {
-        self as u8
-    }
-
-    fn as_usize(self) -> usize {
-        usize::from(self.as_u8())
-    }
-}
-
-pub static PICS: spin::Mutex<ChainedPics> =
-    spin::Mutex::new(unsafe { ChainedPics::new(PIC_1_OFFSET, PIC_2_OFFSET) });
-
 lazy_static! {
     static ref IDT: InterruptDescriptorTable = {
         let mut idt = InterruptDescriptorTable::new();
         idt.breakpoint.set_handler_fn(breakpoint_handler);
         unsafe {
-            idt.double_fault
-                .set_handler_fn(double_fault_handler)
+            idt.double_fault.set_handler_fn(double_fault_handler)
                 .set_stack_index(gdt::DOUBLE_FAULT_IST_INDEX);
         }
-        idt[InterruptIndex::Timer.as_usize()].set_handler_fn(timer_interrupt_handler);
-        idt[InterruptIndex::Keyboard.as_usize()].set_handler_fn(keyboard_interrupt_handler);
         idt
     };
 }
@@ -51,12 +19,6 @@ lazy_static! {
 pub fn init_idt() {
     println!("Loading IDT");
     IDT.load();
-
-    println!("Initializing PIC");
-    unsafe { PICS.lock().initialize() };
-
-    println!("Enabling interrupts");
-    x86_64::instructions::interrupts::enable();
 }
 
 extern "x86-interrupt" fn breakpoint_handler(stack_frame: InterruptStackFrame) {
@@ -72,37 +34,3 @@ extern "x86-interrupt" fn double_fault_handler(
 ) -> ! {
     panic!("EXCEPTION: DOUBLE FAULT\n{:#?}", stack_frame);
 }
-
-extern "x86-interrupt" fn timer_interrupt_handler(_stack_frame: InterruptStackFrame) {
-    print!(".");
-    unsafe {
-        PICS.lock()
-            .notify_end_of_interrupt(InterruptIndex::Timer.as_u8());
-    }
-}
-
-extern "x86-interrupt" fn keyboard_interrupt_handler(_stack_frame: InterruptStackFrame) {
-    lazy_static! {
-        static ref KEYBOARD: Mutex<Keyboard<layouts::Us104Key, ScancodeSet1>> =
-            Mutex::new(Keyboard::new(layouts::Us104Key, ScancodeSet1,
-                HandleControl::Ignore)
-            );
-    }
-
-    let mut keyboard = KEYBOARD.lock();
-    let mut port = Port::new(PS2_CONTROLLER_PORT);
-    let scancode: u8 = unsafe { port.read() };
-
-    if let Ok(Some(key_event)) = keyboard.add_byte(scancode) {
-        if let Some(key) = keyboard.process_keyevent(key_event) {
-            match key {
-                DecodedKey::Unicode(character) => print!("{}", character),
-                DecodedKey::RawKey(key) => print!("{:?}", key),
-            }
-        }
-    }
-    unsafe {
-        PICS.lock()
-            .notify_end_of_interrupt(InterruptIndex::Keyboard.as_u8());
-    }
-}

src/lib.rs

@@ -14,13 +14,7 @@ use vga::{Color, ColorCode};
 fn panic_handler(info: &PanicInfo) -> ! {
     vga::change_color(ColorCode::new(Color::LightRed, Color::Black));
     println!("{}", info);
-    hlt_loop();
-}
-
-pub fn hlt_loop() -> ! {
-    loop {
-        x86_64::instructions::hlt();
-    }
+    loop {}
 }
 
 pub fn init() {

src/serial.rs

@@ -35,13 +35,10 @@ lazy_static! {
 #[doc(hidden)]
 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");
-    });
+    SERIAL1
+        .lock()
+        .write_fmt(args)
+        .expect("Printing to serial failed");
 }
 
 /// Prints to the host through the serial interface.

src/vga.rs

@@ -28,11 +28,7 @@ macro_rules! println {
 #[doc(hidden)]
 pub fn _print(args: fmt::Arguments) {
     use core::fmt::Write;
-    use x86_64::instructions::interrupts;
-
-    interrupts::without_interrupts(|| {
-        WRITER.lock().write_fmt(args).unwrap();
-    });
+    WRITER.lock().write_fmt(args).unwrap();
 }
 pub fn change_color(color: ColorCode) {
     WRITER.lock().change_color(color)