119 lines
3.5 KiB
Rust
119 lines
3.5 KiB
Rust
pub use logging::log;
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use {
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crate::{allocator, bootmodules::BootModule, kmain::kmain},
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core::arch::asm,
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limine::FramebufferRequest,
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};
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mod device_info_collector;
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use device_info_collector::collect_device_info;
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pub mod logging;
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use limine::HhdmRequest;
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extern "C" {
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fn _initial_kernel_heap_start();
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fn _initial_kernel_heap_size();
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}
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const INITIAL_KERNEL_HEAP_START: *mut u8 = _initial_kernel_heap_start as _;
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const INITIAL_KERNEL_HEAP_SIZE: *const () = _initial_kernel_heap_size as _;
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pub const PAGE_SIZE: usize = 4096;
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static FB_REQ: FramebufferRequest = FramebufferRequest::new(0);
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#[no_mangle]
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unsafe extern "C" fn _kernel_start() -> ! {
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crate::logger::init().expect("failed to set logger");
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log::info!("Initialising AKern {}", crate::VERSION);
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static HDHM_REQ: HhdmRequest = HhdmRequest::new(0);
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// memory::init_pt(VirtAddr::new(
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// HDHM_REQ
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// .get_response()
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// .get()
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// .expect("tried to get physical memory mapping offset from Limine")
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// .offset,
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// ));
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allocator::init(INITIAL_KERNEL_HEAP_START, INITIAL_KERNEL_HEAP_SIZE as _);
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collect_device_info();
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let bm = MOD_REQ.get_response().get();
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use limine::{KernelFileRequest, ModuleRequest};
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static KFILE_REQ: KernelFileRequest = KernelFileRequest::new(0);
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static MOD_REQ: ModuleRequest = ModuleRequest::new(0);
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let mut bootmodules = alloc::vec::Vec::new();
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if bm.is_some() {
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let bm = bm.unwrap();
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for x in 0..bm.module_count {
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let file = bm.modules().get(x as usize);
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if file.is_some() {
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let file = file.unwrap();
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let raw_bytes = core::slice::from_raw_parts(
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file.base.as_ptr().expect("invalid initrd"),
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file.length as usize,
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)
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.to_vec();
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let file_path = alloc::string::String::from_utf8(
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file.path.to_str().unwrap().to_bytes().to_vec(),
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);
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if file_path.is_err() {
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panic!("invalid file path: {:?}", file_path);
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}
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let file_cmd = alloc::string::String::from_utf8(
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file.cmdline.to_str().unwrap().to_bytes().to_vec(),
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);
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if file_cmd.is_err() {
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panic!("invalid module cmd: {:?}", file_cmd);
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}
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log::trace!("module path: {:?}", file_path);
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log::trace!("module cmd: {:?}", file_cmd);
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bootmodules.push(BootModule::new(
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file_path.unwrap(),
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raw_bytes,
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file_cmd.unwrap(),
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));
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} else {
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log::error!("You should not be here");
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break;
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}
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}
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log::info!("Boot module count: {:?}", bootmodules.len());
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assert_eq!(bm.module_count, bootmodules.len() as u64);
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}
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crate::kmain::kmain(
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KFILE_REQ
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.get_response()
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.get()
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.and_then(|r| r.kernel_file.get())
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.expect("failed to get kernel file from Limine")
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.cmdline
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.to_str()
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.map(core::ffi::CStr::to_str)
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.transpose()
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.expect("expected valid cmdline string")
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.unwrap_or_default(),
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bootmodules,
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);
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spin_loop();
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}
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pub fn spin_loop() -> ! {
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loop {
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unsafe { asm!("wfi") }
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}
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}
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pub fn hardware_random_u64() -> u64 {
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0
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}
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pub fn register_dump() {}
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#[no_mangle]
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pub fn fmod() {}
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