[U-Boot-Users] RFC: hidden environment variables

[Truong, Loc]

As a u-boot user for product development I am siding with Wolfgang on
this. U-boot, as a bootloader, can be tailored with different
"personalities", but having these as "hidden" variables may polute the
simplicity of how u-boot works. There must be a cleaner way of doing
this so that special purpose data can be embedded as a data structure
w/o using "the environment".
Best regards,
Loc

-----Original Message-----
From: u-boot-users-bounces at lists.sourceforge.net
[mailto:u-boot-users-bounces at lists.sourceforge.net] On Behalf Of
Wolfgang Denk
Sent: Monday, April 23, 2007 6:52 PM
To: Timur Tabi
Cc: uboot
Subject: Re: [U-Boot-Users] RFC: hidden environment variables

In message <462D3DD4.2090500 at freescale.com> you wrote:
>
> > If you don't want to break compatibility with  existing  systems
you
> > ill  have  to  maintain a separate list anyway - either in the
source
> > code, or in the environment ;-)
> 
> Well, the point behind having hidden variables is that the source code
which needs to use 
> a hidden variable can just call _do_setenv() (or whatever) and have it
set an environment 
> variable that is hidden.  My preference would be that any variable
that starts with a dot 
> (.) is hidden.  That way, the source code doesn't really need to have
a separate list.  It 
> just names its variables with a dot.  The rest is automatic.

So far, this is a perfectly legal variable name in U-Boot. You cannot
change the meaning of such names without breaking compatibility  with
existing systems that might use such names.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH, HRB 165235 Munich, CEO: Wolfgang Denk
Office:  Kirchenstr. 5,       D-82194 Groebenzell,            Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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that there never was a plan in the first place.

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