[U-Boot] [PATCH v2 07/44] Use separate options for TPL support

[Simon Glass]

Hi Tom,

On 6 September 2016 at 12:06, Tom Rini <trini at konsulko.com> wrote:
> On Mon, Aug 29, 2016 at 06:21:15PM -0600, Simon Glass wrote:
>
>> At present TPL uses the same options as SPL support. In a few cases the board
>> config enables or disables the SPL options depending on whether
>> CONFIG_TPL_BUILD is defined.
>>
>> With the move to Kconfig, options are determined for the whole build and
>> (without a hack like an #undef in a header file) cannot be controlled in this
>> way.
>>
>> Create new TPL options for these and update users. This will allow Kconfig
>> conversion to proceed for these boards.
>>
>> Signed-off-by: Simon Glass <sjg at chromium.org>
>
> For the record, I think this shows that we need to think about how we
> setup and build SPL/TPL/... but I also think we can't fix it until we've
> unwound what we have now so it's clear what is and isn't used, what is
> and isn't a pain about it and how at the end of the day users also need
> to build something, something that works and ideally not spend more time
> doing all of that than it takes to actually just build what they want.

Agreed. There must be a better way.

IMO we need to move things in stages. Getting to Kconfig is step
forward. I took a bit of a look at generalising the build a bit but it
seems like something better down later. Masahiro has done a lot of
improvements here.

My tentative conclusion was that if we could run the build for U-Boot
proper and then for SPL using a common Makefile (i.e. without a
special Makefile.spl) then we might get somewhere. One day...

Regards,
Simon