1 use core::{fmt::Write, sync::atomic::Ordering}; 2 3 use crate::{ 4 arch::MMArch, 5 driver::serial::serial8250::send_to_default_serial8250_port, 6 filesystem::procfs::kmsg::kmsg_init, 7 libs::printk::PrintkWriter, 8 mm::{mmio_buddy::mmio_init, page::page_manager_init}, 9 }; 10 11 use super::MemoryManagementArch; 12 13 #[atomic_enum] 14 #[derive(PartialEq, Eq)] 15 pub enum MMInitStatus { 16 NotInit, 17 Initializing, 18 Initialized, 19 } 20 /// 内存管理的初始化状态 21 static MM_INIT: AtomicMMInitStatus = AtomicMMInitStatus::new(MMInitStatus::NotInit); 22 23 #[inline(never)] 24 pub unsafe fn mm_init() { 25 send_to_default_serial8250_port("mm_init\n\0".as_bytes()); 26 PrintkWriter 27 .write_fmt(format_args!("mm_init() called\n")) 28 .unwrap(); 29 // printk_color!(GREEN, BLACK, "mm_init() called\n"); 30 31 if MM_INIT 32 .compare_exchange( 33 MMInitStatus::NotInit, 34 MMInitStatus::Initializing, 35 Ordering::SeqCst, 36 Ordering::SeqCst, 37 ) 38 .is_err() 39 { 40 send_to_default_serial8250_port("mm_init err\n\0".as_bytes()); 41 panic!("mm_init() can only be called once"); 42 } 43 44 MMArch::init(); 45 46 // enable mmio 47 mmio_init(); 48 // enable KMSG 49 kmsg_init(); 50 // enable PAGE_MANAGER 51 page_manager_init(); 52 53 MM_INIT 54 .compare_exchange( 55 MMInitStatus::Initializing, 56 MMInitStatus::Initialized, 57 Ordering::SeqCst, 58 Ordering::SeqCst, 59 ) 60 .unwrap(); 61 kinfo!("mm init done."); 62 } 63 64 /// 获取内存管理的初始化状态 65 pub fn mm_init_status() -> MMInitStatus { 66 MM_INIT.load(Ordering::SeqCst) 67 } 68