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

[Tom Rini]

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.

-- 
Tom
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