[U-Boot-Users] [PATCH] lkc support for U-Boot

Wolfgang Denk wd at denx.de
Thu Nov 7 11:03:07 CET 2002

In message <200211071011.59506.h.schurig at mn-logistik.de> you wrote:
> > Why are all these things named ARCH_*?
> They don't have to.

Then we should not do that.

> But in the Linux kernel they are all called CONFIG_ARCH_<boardname>. At least 
> in the ARM tree, the one I'm familiar with:

Yes, I know, and never understood. Actually I consider  this  a  bug;
for  example, we support both the SMDK2400 and TRAB boards, which use
the same architecture and the same CPU (Samsunf s3c2400). 95% of  the
code  that  needs  to  be  #ifdef'ed  is CPU dependend, so I think we
should have a CONFIG_ARCH_S3C2400 plus either  a  CONFIG_SMDK2400  or
CONFIG_TRAB (or maybe that should be CONFIG_BOARD_SMDK2400) etc.

> #
> # System Type
> #
> # CONFIG_ARCH_ANAKIN is not set
> # CONFIG_ARCH_ARCA5K is not set
> # CONFIG_ARCH_CLPS7500 is not set
> # CONFIG_ARCH_CLPS711X is not set
> # CONFIG_ARCH_CO285 is not set

I know. This design is broken.

> The actual configuration is in the .config file --- and can be in the 
> per-board directory as a def-config.
> But what is configurable (the meta-configuration) info is distributed. 
> Ideally, in each directory where some *.C or *.H files implement features the 
> corresponding config.in file contains the meta-information of what the 
> feature does, how it is named, how it relates to other config infos.

Understood. Well, I have to admit that I will have  to  get  used  to
this idea.

> If you now do this using the current approach, then a maintainer for a board 
> would have to check from time to time the include/cmd_confdefs.h for new 
> things on the radar and would 

Most boards use either a carefully  selcted  combinations  of  wanted
options,  or  a  selection  of  excluded  options,  so  this  happens

Best regards,

Wolfgang Denk

Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
See us @ electronica 2002 in Munich, Nov 12-15, Hall A3, Booth A3.325 

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