[U-Boot-Users] UART 16654

Sam Song samsongshu at yahoo.com.cn
Mon Jan 3 04:30:05 CET 2005

Wolfgang Denk <wd at denx.de> wrote:
> > But one exception for serial console driver. I
> > found there wasn't enable control of UART receiver
> > in 8xx kerenl serial console driver uart.c. Maybe
> > this driver make a assumption that boot loader 
> > does this job?
> It should not. But there are bugs and bugs and ...

So I know what the driver could be... 

> > IMHO, if one person did u-boot and kernel port
> > both, he would have the chance to consider the 
> > harmony between U-Boot and Kernel. So some 
> > initialization like
> > receiver enable in kernel driver could be omitted.
> > Is this an informal idea?
> Actually it is a bad idea if the kernel makes
> assumptions about which boot loader  is  used,  or 
> which  initializations the  boot  loader
> performes. Yes, we all like U-Boot more than every
> other boot oader, but why knows what sort of boot 
> loader  the  next guy  booting  your
> kernel  wants  or  has to use? Don't make life more
> difficult for him than absolutely necessary.

Hi, Wolfgang. I appreciate your reply in the view of
kernel rather than u-boot. Well, sounds a little bit
late to answer your help but after a deep

Thanks very much and Happy New Year!

Best regards,


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