[u-boot][PATCH v2 2/4] scripts: Makefile.spl: Enable memory drivers to be built for SPL

[Simon Glass]

Hi Tom,

On Thu, 20 Oct 2022 at 06:29, Tom Rini <trini at konsulko.com> wrote:
>
> On Thu, Oct 20, 2022 at 03:23:42PM +0300, Roger Quadros wrote:
> > Hi Tom,
> >
> > On 19/10/2022 15:54, Tom Rini wrote:
> > > On Wed, Oct 19, 2022 at 11:17:35AM +0300, Roger Quadros wrote:
> > >>
> > >>
> > >> On 18/10/2022 20:40, Tom Rini wrote:
> > >>> On Thu, Oct 06, 2022 at 04:23:58PM +0300, Roger Quadros wrote:
> > >>>> We will need ti-gpmc driver for SPL. Allow memory drivers
> > >>>> do be built for SPL.
> > >>>>
> > >>>> Signed-off-by: Roger Quadros <rogerq at kernel.org>
> > >>>> ---
> > >>>>  scripts/Makefile.spl | 1 +
> > >>>>  1 file changed, 1 insertion(+)
> > >>>>
> > >>>> diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl
> > >>>> index 3bafeb4fe9..110076b22f 100644
> > >>>> --- a/scripts/Makefile.spl
> > >>>> +++ b/scripts/Makefile.spl
> > >>>> @@ -114,6 +114,7 @@ libs-$(CONFIG_PARTITIONS) += disk/
> > >>>>  endif
> > >>>>
> > >>>>  libs-y += drivers/
> > >>>> +libs-y += drivers/memory/
> > >>>>  libs-$(CONFIG_SPL_USB_GADGET) += drivers/usb/dwc3/
> > >>>>  libs-$(CONFIG_SPL_USB_GADGET) += drivers/usb/cdns3/
> > >>>>  libs-y += dts/
> > >>>
> > >>> This ends up being the wrong approach as it then pulls in
> > >>> drivers/memory/stm32-fmc2-ebi.o on all of those platforms, in SPL, which
> > >>> is not what's intended. We need an SPL_MEMORY symbol and then gate the
> > >>> directory on that.
> > >>>
> >
> > I have a question about how CONFIG_SPL_MEMORY works together with CONFIG_MEMORY.
> >
> > Do we use CONFIG_SPL_MEMORY only to gate the drivers/memory directory inclusion?
> > Then continue to use CONFIG_MEMORY and others to enable/disable driver
> > build for both non-SPL and SPL case?
> >
> > So drivers/memory/Makefile remains as it is?
>
> Well, for consistency code should use IS_ENABLED(MEMORY) which will be
> true for CONFIG_MEMORY or CONFIG_SPL_MEMORY.

nit: CONFIG_IS_ENABLED(MEMORY)

Perhaps we can look at my Kconfig series so it can become
CONFIG(MEMORY) and we can drop all the SPL_TPL_ stuff in Makefiles?

Regards,
SImon