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