From af8d5aa4538ac71f11a5418ef94ae478868a0484 Mon Sep 17 00:00:00 2001 From: salmonik Date: Fri, 31 Jul 2026 02:28:10 +0200 Subject: interrupts: IDT, PIC remap, PIT timer, PS/2 keyboard IRQ MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - IDT with 256 entries, loaded via lidt (CS read from current context) - PIC 8259A remapped to vectors 32-47, timer+keyboard IRQs unmasked - PIT channel 0 at ~100 Hz (mode 2, rate generator) - PS/2 keyboard IRQ (IRQ1 → vector 33): reads port 0x60, pushes byte to lock-free SPSC ring buffer - Timer IRQ (IRQ0 → vector 32): sends EOI, increments tick counter - ps2::poll_key() now reads from ring buffer with cli/sti+hlt for race-free sleep (instead of busy-polling the data port) - build.rs: use idiomatic Result<_, Box> return type - tools/qemu.sh: fix SC2207 shellcheck warning --- src/main.rs | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'src/main.rs') diff --git a/src/main.rs b/src/main.rs index 2b1df77..9a901f5 100644 --- a/src/main.rs +++ b/src/main.rs @@ -9,6 +9,7 @@ extern crate alloc; mod font; mod gop; +mod interrupts; mod memory; mod ps2; mod serial; @@ -127,6 +128,10 @@ pub extern "efiapi" fn efi_main(image_handle: Handle, system_table: *mut SystemT ps2::init(); serial_println!("ps2: keyboard initialized"); + // Interrupts — IDT, PIC, PIT timer, keyboard IRQ handler + interrupts::init(); + serial_println!("intr: IDT loaded, PIC remapped, timer ~100 Hz"); + // Memory: the bump allocator was set up during capture_memory_map. // `alloc::Vec`, `alloc::String`, `format!` etc. are now usable. -- cgit v1.2.3