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

[Holger Schurig]

> OTOH options like CFG_LONGHELP may have  to  do  with  hardware  -
> for  example, if there is a hardware restriction in the maximum size of
> PPCBoot (like my often quoted  128 kB  EPROM  device)

simple enought:

config LONGHELP
  bool "Include long help texts"
  default n if ARCH_VERYSMALLBOARD
  help
    This add approx XX kB to U-Boot, so please be sure that the resulting
    binary still fit's into your EEPROM or FLASH.



> But then, when you check just 20 randomly
> chosen board config files, you will find such a wide range of private
> extensions, which are strictly "local" (i. e. of  interest  only  for
> that specific board), that I think it would be extremely difficult to
> maintain this under lkc.

No, not really.

Currently I have one bigger u-boot/config.in file, defining all the basic 
stuff. This one include u-boot/boards/config.in which in turn can include any 
board-specific u-boot/boards/<someboard>/config.in file --- or not.

So it is absolutely no problem to have in u-boot/boards/<someboard>/config.in 
an entry like

config IDP_PXA_STRANGE_FEATURE
  depend ARCH_IDP_PXA
  int "Strangeness of this feature"
  default 5

and in boards/idppxa/idppxa.c you can then simply have

#ifdef CONFIG_IDP_PXA_STRANGE_FEATURE
  printf("My strangeness is %d\n", CONFIG_IDPPXA_STRANGE_FEATURE);
#endif

In this case it is quite clear that this feature is only for this one board. 
When you do "make xconfig" or "make menuconfig" and you select another board, 
you would not even see that this feature exists (because of the depend line).


> And combining a lkc created config file with
> a  second,  board private config file, seems contraproductivee to me.

Not for me. Look at the kernel or at OpenZaurus. Both of this systems are 
build around lot's of config.in files in various directories. It's much 
easier to maintain and understand this way.

-- 
MN-Logistik GmbH         http://www.mn-logistik.de
Holger Schurig
Dieselstr. 18
61191 Rosbach v.d.Höhe
Tel: 06003/9141-0        Fax: 06003/9141-49