Function init

src/mem.rs:36–77

Initialization

(bootinfo: &'static BootInfo)

// Initialization
pub fn init(bootinfo: &'static BootInfo)
{
	interrupts::without_interrupts(||
	{
		let mut memsize = 0;

		for region in bootinfo.memory_map.iter()
		{
			let start_address = region.range.start_addr();
			let end_address = region.range.end_addr();

			memsize += end_address - start_address;
			serprint!("[INFO] MEM [{:#016X}-{:#016X}] {:?}\n", start_address, end_address, region.region_type);
		}

		serprint!("[INFO] MEM: {} KB\n", memsize >> 10);
		MEMSIZE.store(memsize, Ordering::Relaxed);

		unsafe
		{
			PMEM_OFFSET = bootinfo.physical_memory_offset
		};

		unsafe
		{
			MEMMAP.replace(&bootinfo.memory_map)
		};

		let mut mapper = unsafe
		{
			mapper(VirtAddr::new(PMEM_OFFSET))
		};

		let mut framealloc = unsafe
		{
			BootInfoFrameAllocator::init(&bootinfo.memory_map)
		};

		crate::allocator::init_heap(&mut mapper, &mut framealloc)
			.expect("[ERR] FAILED TO INITALIZE HEAP");
	});
}


unsafe fn active_lvl4_tab(physmem_offset: VirtAddr) -> &'static mut PageTable