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Disable PIC

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This commit is contained in:
Mathieu Strypsteen 2024-07-08 14:28:04 +02:00
parent 8b13664aca
commit 4951d2c509
3 changed files with 25 additions and 0 deletions
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3
kernel/src/main.rs
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@ -14,8 +14,10 @@ use kernel_common::{
};
use linked_list_allocator::LockedHeap;
use log::{error, info};
use sys::pic::disable_pic;
mod cpu;
mod sys;
#[global_allocator]
static ALLOC: LockedHeap = LockedHeap::empty();
@ -53,6 +55,7 @@ extern "C" fn main(temp_loader_struct: *const LoaderStruct) -> ! {
setup_gdt();
setup_idt();
setup_paging(&loader_struct, loader_struct.phys_kernel_start, loader_struct.phys_heap_start);
disable_pic();
loop {
hlt();
}

1
kernel/src/sys/mod.rs Normal file
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@ -0,0 +1 @@
pub mod pic;

21
kernel/src/sys/pic.rs Normal file
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@ -0,0 +1,21 @@
use kernel_common::ioports::outb;
const PIC1_CMD: u16 = 0x20;
const PIC1_DATA: u16 = 0x21;
const PIC2_CMD: u16 = 0xa0;
const PIC2_DATA: u16 = 0xa1;
pub fn disable_pic() {
unsafe {
outb(PIC1_CMD, 0x11);
outb(PIC2_CMD, 0x11);
outb(PIC1_DATA, 0x20);
outb(PIC2_DATA, 0x28);
outb(PIC1_DATA, 4);
outb(PIC2_DATA, 2);
outb(PIC1_DATA, 1);
outb(PIC2_DATA, 1);
outb(PIC1_DATA, 0xff);
outb(PIC2_DATA, 0xff);
}
}