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                            Kernel中串口的驅動程序使用8250通用驅動，路徑在：
![](https://img.kancloud.cn/72/25/722529a50f62ef7d101b9d2ff79a0369_832x174.png =600x)

### 

* drivers/tty/serial/8250/8250\_core.c
* drivers/tty/serial/8250/8250\_dma.c????????dma實現。
* drivers/tty/serial/8250/8250\_dw.c???????????design?ware?ip相關操作。
* drivers/tty/serial/8250/8250\_early.c????????early?console實現。
* drivers/tty/serial/8250/8250\_fsl.c
* drivers/tty/serial/8250/8250.c
* drivers/tty/serial/8250/8250\_port.c????? ?端口相關的接口。
* drivers/tty/serial/earlycon.c??????解析命令行
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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