关闭串口log
在对应的config头文件里添加如下红色内容：
uboot/include/configs/xxx.h
#define CONFIG_BOOTARGS " loglevel=0 console=ttyS3,115200 vmalloc=412M " CONFIG_BOOTARGS_RAMDISK CONFIG_BOOTARGS_MEM "android "
#define CONFIG_RECOVERY_BOOTARGS "console=ttyS3,115200 vmalloc=412M " CONFIG_BOOTARGS_RECOVERY_RAMDISK CONFIG_BOOTARGS_MEM "android "
#define CONFIG_BOOTARGS_CHARGE_ONLY "loglevel=0 console=ttyS3,115200 vmalloc=412M " CONFIG_BOOTARGS_RAMDISK CONFIG_BOOTARGS_MEM "android "
4
