[U-Boot] [RFC PATCH 04/17] kconfig: add defconfig files for all boards

[Tom Rini]

On Thu, Mar 20, 2014 at 02:17:07PM +0100, Daniel Schwierzeck wrote:
> 2014-03-20 1:11 GMT+01:00 Masahiro Yamada <yamada.m at jp.panasonic.com>:
> >
> > Basicly I think it's a good idea, but I am afraid there are some
> > problems.
> >
> > [1]
> > First, in this case, how can we select the target board?
> >
> > Like this?
> >
> > choice
> >         prompt "Board select"
> >         default BOARD_SANDBOX
> >
> > config BOARD_VEXPRESS_AEMV8A
> >         bool "vexpress_aemv8a board"
> >
> > config BOARD_ARCANGEL4
> >         bool "arcangel4 board"
> >
> >     [ Snip: a thousand of boards ]
> >
> > endchoice
> >
> > If we run "make config", a bunch of board choices
> > would be displayed and be gone away quickly.
> > For "make menuconfig", it would be hard to select the board
> > you are aiming at.
> >
> >
> > Maybe we should choose it in the top-down order?
> > Like this?
> 
> I think only the top-down approach makes sense
> 
> >
> > [2]
> > CONFIG_CPU_
> > CONFIG_SOC_
> > CONFIG_VENDOR_
> > CONFIG_BOARD_
> > are systematic prefixes and easy to understand.
> >
> > But there are already some macros bound to
> > specific CPUs, SoCs.
> >
> > For example,
> > CONFIG_SOC_TEGRA30 would be the same as
> > existing CONFIG_TEGRA30.
> >
> > We will have to merge macros with the same meaning.
> 
> in the first step we could do something like this:
> 
> config TEGRA30
>         bool
> 
> config SOC_TEGRA30
>         bool
>         select TEGRA30
> 
> >
> > [3]
> > How to select board directoy by using boolean macros.
> >
> > If we try to emulate arch/arm/Makefile of Linux,
> >
> > board-$(CONFIG_BOARD_VEXPRESS_AEMV8A)   := vexpress_aemv8a
> > board-$(CONFIG_BOARD_AXS101)                     := axs101
> > board-$(CONFIG_BOARD_ARCANGEL4)               := arcangel4
> >
> > Like this?
> >
> 
> how about this:
> 
> Makefile:
> ...
> lib-y += boards/
> ...
> 
> board/Makefile:
> obj-$(CONFIG_BOARD_A3000) += a3000/
> ...
> obj-$(CONFIG_VENDOR_NVIDIA) += nvidia/
> ...
> 
> board/nvidia/Makefile:
> obj-y += common/
> obj-$(CONFIG_BOARD_BEAVER) += beaver/
> obj-$(CONFIG_BOARD_CARDHU) += cardhu/
> ...

Yes, would something like this be doable?  Thanks!

-- 
Tom
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