[U-Boot] [RFC][PATCH 3/3] Add board support for the eXMeritus HWW-1U-1A devices

[Peter Tyser]

Hi Kyle,

> On Sep 03, 2010, at 00:00, Peter Tyser wrote:
> >> --- a/Makefile
> >> +++ b/Makefile
> >> @@ -2499,6 +2499,10 @@ P2020DS_36BIT_config \
> >> P2020DS_config:              unconfig
> >>      @$(MKCONFIG) -t $(@:_config=) P2020DS ppc mpc85xx p2020ds freescale
> >> 
> >> +HWW_1U_1A_36BIT_config \
> >> +HWW_1U_1A_config:    unconfig
> >> +     @$(MKCONFIG) -t $(@:_config=) HWW_1U_1A ppc mpc85xx hww-1u-1a exmeritus
> >> +
> > 
> > The new way to add a board is via boards.cfg.  You shouldn't need to
> > modify this Makefile.
> 
> Is there some appropriate documentation on how boards.cfg is supposed to work?

Not that I'm aware of.  Its a relatively recent change to U-Boot.

> The latest u-boot.git still seems to have the P2020DS lines that I referenced in "Makefile", and it has no references at all to "P2020DS" in the "boards.cfg" file.

It looks like the top-level Makefile is still required for boards that
support multiple configs, eg 'make P2020DS_36BIT' will configure U-Boot
to compile a 36-bit addressable U-Boot image while 'make P2020DS' will
configure a 32-bit addressable U-Boot image, but they both use the same
Makefile rule with some fancy parsing.  So I guess if you have a need
for both a 32 and 36bit version of U-Boot you'll to modify the Makefile
like your original patch did unfortunately.  If you don't need to
support both U-Boot configs, you can go the route of other similar
boards that are only in boards.cfg, eg P4080DS, P1022DS, XPedite5370,
etc.

Best,
Peter