From mboxrd@z Thu Jan  1 00:00:00 1970
From: Masahiro Yamada <yamada.m@jp.panasonic.com>
Date: Fri, 04 Apr 2014 20:19:47 +0900
Subject: [U-Boot] [Question] bardrate both in gd_t and bd_t
In-Reply-To: <20140404092217.394AB380956@gemini.denx.de>
References: <20140404114250.5C15.AA925319@jp.panasonic.com>
	<20140404092217.394AB380956@gemini.denx.de>
Message-ID: <20140404201947.3571.AA925319@jp.panasonic.com>
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To: u-boot@lists.denx.de

Hi Wolfgang,


On Fri, 04 Apr 2014 11:22:17 +0200
Wolfgang Denk <wd@denx.de> wrote:

> Dear Masahiro,
> 
> In message <20140404114250.5C15.AA925319@jp.panasonic.com> you wrote:
> > 
> > > Correct. In some (really old) kernel versions this was the way to pass
> > > this information to the kernel, so we neede dit there.
> > > 
> > > > I suspect the reason it is in global_data is that the bd_t  structure
> > > > doesn't exist until some time after the console is started up, so it
> > > > wouldn't be possible to do serial output otherwise.
> > > 
> > > Also correct.
> > > 
> > 
> > Thanks.
> > Sadly, it looks like we should keep both of the two.
> 
> I'm not so sure.  As mentioned, this was used in really old kernel
> versions only.  I remember it for the Power archtecture, where only
> the pre-devicetree kernel versions (i. e. 2.4.x) used this.  OK, I
> know of a number of projeects which are still using such old kernbel
> versions, but these are also using ancient U-Boot versions.
> 
> I don't think we have to keep support for ancient kernels in current
> U-Boot.  Eventually we may drop it.

As a matter of fact, I had prepared a patch when I got replies
from you guys.
I've post it as RFC, just in case.
(I confirmed no boards broken at least build test.)

I am not sure if it can be dropped either.
Anyway, I follow Tom's decesion.


Best Regards
Masahiro Yamada