[RFC] disk: don't compile in partition support for spl/tpl if not really necessary

[AKASHI Takahiro]

Hi Tom,

Thank you for evaluating the code growth.

On Fri, Apr 15, 2022 at 11:01:48PM -0400, Tom Rini wrote:
> On Fri, Apr 15, 2022 at 04:11:56PM +0900, AKASHI Takahiro wrote:
> > We see some increase of spl code size due to partition support (disk/*)
> > while none of particular partition types (CONFIG_SPL_XXX_PARTITION) are
> > enabled.
> > With this patch applied, part.c is no longer included unless really
> > necessary.
> > 
> > In addition, fix errors in CI build revealed after this change is made.
> > 
> > Fixes: commit 88ca8e26958b ("disk: Add an option for partitions in SPL")
> > Fixes: commit 17f8cda505e3 ("efi_loader: set partition GUID in device path
> > 	for SIG_TYPE_GUID")
> > Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>
> > ---
> >  cmd/Kconfig                                  |  1 +
> >  configs/cortina_presidio-asic-emmc_defconfig |  1 -
> 
> So, the defconfig change here is wrong, CMD_PART isn't being implied
> otherwise,

As I said in my reply to Heinrich, this defconfig seems weird.
but that's okay as I found another workaround.

> and this board is part of a number of boards that had
> EFI_LOADER before, but not DOS_PARTITION, and so do grow, but in a
> valid/expected way.  There are also a number of boards that don't have
> any partition type support set, but that too I think ends up being
> correct.  The whole before/after is at
> https://gist.github.com/trini/731ee8d50a9bc96b90e12860f8c53f14

That happens, probably, because EFI_LOADER is by default enabled
for most platforms whether users want to use UEFI or not.
I don't think that people who want to use UEFI with U-Boot will
be much careful of the code increase by this change.

Anyway, I will drop this hunk("select DOS_PARTITION) in the next version
as I found another way to fix the dependency issue.

-Takahiro Akashi



> -- 
> Tom