[U-Boot] [PATCH v3 01/11] spl: Kconfig: Add SPL_<media>_BOOT as Kconfig option

[Andrew F. Davis]

On 08/26/2016 04:27 PM, Tom Rini wrote:
> On Thu, Aug 25, 2016 at 04:45:31PM -0500, Andrew F. Davis wrote:
> 
>> Currently U-Boot proper has Kconfig options that enable the generation
>> of U-Boot binaries that are capable of being booted from the selected
>> boot media type. The same set of generation targets for SPL are assumed
>> with various methods and config header hackery. On some platforms the
>> options for SPL, such as load address, are dependent on boot type
>> and cannot depend on boot image type selected for U-Boot proper.
>> Add a Kconfig menu to select SPL boot image types, and populate it
>> with the same media types as are already available for U-Boot proper.
>>
>> NOTE: As only a couple TI devices use make correct use of these options
>> we limit the menu to these devices for now. The only other users
>> of these seem to be some PPC boards that incorrectly use these as both
>> SPL and TPL build options.
>>
>> Signed-off-by: Andrew F. Davis <afd at ti.com>
> 
> OK, sorry, I feel we've gone off on a wild goose chase here.  Of all the
> options that get added here, only two appear to be used at all and it's
> by the "old" Freescale SPL and not the current iteration of SPL.  Those
> conversions should end up in board/freescale/Kconfig I think.
> 

These are used in patch 3 of this series, but I can drop that use by
simply always building SPLs for all supported media types. Most of our
platforms only need two image types anyway (QSPI and MLO for everything
else).

We could do the same for the existing {media}_BOOT, they are rarely used
correctly as described by the Kconfig help (formatting the U-Boot binary
output image for a specific media type), often mistaken for
{media}_SUPPORT options.

Masahiro would probably be happy to help remove these options altogether
(taking this patch a step further:
https://patchwork.ozlabs.org/patch/661706/).

Andrew