系统启动进入linux后,调试串口突然不再打印内容,系统是正常运行,没有死机,请问什么原因? [ 0.466457] dma-pl330 ff6d0000.dma-controller: DBUFF-32x8bytes Num_Chans-6 Num_Peri-12 Num_Events-12 [ 0.468694] dma-pl330 ff6e0000.dma-controller: Loaded driver for PL330 DMAC-241330 [ 0.469410] dma-pl330 ff6e0000.dma-controller: DBUFF-128x8bytes Num_Chans-8 Num_Peri-20 Num_Events-16 [ 0.472104] Serial: 8250/16550 driver, 6 ports, IRQ sharing disabled [ 0.473253] ff180000.serial: ttyS0 at MMIO 0xff180000 (irq = 37, base_baud = 1500000) is a 16550A [ 0.474534] ff1a0000.serial: ttyS2 at MMIO 0xff1a0000 (irq = 38, base_baud = 1500000) is a 16550A |
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