Dear all: I try to porting linux on my platform and I can successfully jump to start_kernel in init/main.c right now. But I want to use uart as my printk target such that I can debug by uart output messages. I have surveyed kernel/printk.c and it seems vprintk finally print the message to log_buf instead of some device. Would someone please tell me where I can find the interface such that the debug message can be transfered to my uart? appreciate your help, miloody -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ