Prompt: DBGU │
│ Defined at arch/arm/mach-at91/Kconfig:535 │
│ Depends on: <choice> │
│ Location: │
│ -> System Type │
│ -> Atmel AT91 System-on-Chip │
│ -> Select a UART for early kernel messages (<choice> [=y])
mem=64M console=ttyS0,115200 initrd=0x21100000,3145728 root=/dev/ram0 rw
修改以上两个地方
另外在板级文件中打开ttyS1