113 lines
3.0 KiB
Rust
113 lines
3.0 KiB
Rust
#![no_std]
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#![feature(abi_x86_interrupt)]
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#![warn(
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clippy::correctness,
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clippy::nursery,
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clippy::unnecessary_cast,
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clippy::all,
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clippy::suspicious,
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clippy::perf,
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rustdoc::missing_errors_doc,
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rustdoc::missing_panics_doc
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)]
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extern crate alloc;
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use arch::x86_64::apic::enable_apic;
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use core::arch::asm;
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use libk::drivers::memory;
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use limine::BaseRevision;
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use libk::drivers::kalloc::allocator::init_heap;
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use libk::prelude::*;
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use x86_64::VirtAddr;
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mod arch;
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/// Sets the base revision to the latest revision supported by the crate.
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/// See specification for further info.
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/// Be sure to mark all limine requests with #[used], otherwise they may be removed by the compiler.
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#[used]
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// The .requests section allows limine to find the requests faster and more safely.
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#[unsafe(link_section = ".requests")]
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static BASE_REVISION: BaseRevision = BaseRevision::new();
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#[panic_handler]
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fn rust_panic(_info: &core::panic::PanicInfo) -> ! {
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println!("Kernel panic: {}", _info);
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serial_println!("Kernel panic: {}", _info);
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hcf();
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}
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pub fn hcf() -> ! {
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loop {
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unsafe {
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#[cfg(target_arch = "x86_64")]
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asm!("hlt");
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#[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))]
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asm!("wfi");
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#[cfg(target_arch = "loongarch64")]
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asm!("idle 0");
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}
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}
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}
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pub fn boot() -> Result<(), &'static str> {
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if !BASE_REVISION.is_supported() {
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return Err("base revision not supported");
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}
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use arch::x86_64::{gdt, interrupts, memmap};
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let memory_map = memmap::get_memory_map();
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print_log!(" Initialising Serial... ");
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if libk::drivers::io::serial::init().is_err() {
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println_log!("[Not Detected]")
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} else {
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println_log!("[Success]");
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}
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print_log!(" Setting Up Global Descriptor Table... ");
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gdt::init();
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println_log!("[Success]");
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print_log!(" Setting Up Interrupt Descriptor Table... ");
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interrupts::init_idt();
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println_log!("[Success]");
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print_log!(" Initialising Memory Subsystem... ");
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let physical_memory_offset = VirtAddr::new(*memmap::PHYSICAL_MEMORY_OFFSET);
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memory::init_page_table(physical_memory_offset);
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println_log!("[Success]");
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print_log!(" Setting Up Page Table... ");
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memory::init_frame_allocator(memory_map);
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println_log!("[Success]");
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print_log!(" Initialising Heap... ");
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if init_heap().is_err() {
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return Err("Failed to initialise heap: error");
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}
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println_log!("[Success]");
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print_log!(" Enabling PICs... ");
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interrupts::enable_pic();
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println_log!("[Success]");
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// print_log!(" Disabling PICs... ");
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// interrupts::disable_pic();
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// println_log!("[Success]");
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// print_log!(" Initialising APIC");
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// enable_apic();
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// println_log!("[Success]");
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print_log!(" Enabling Interrupts... ");
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x86_64::instructions::interrupts::enable();
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println_log!("[Success]");
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Ok(())
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}
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