[PATCH 5/7] Makefile: Add a target for building capsules

[Simon Glass]

Hi Sughosh,

On Thu, 15 Jun 2023 at 17:25, Sughosh Ganu <sughosh.ganu at linaro.org> wrote:
>
> hi Simon,
>
> On Thu, 15 Jun 2023 at 14:44, Simon Glass <sjg at chromium.org> wrote:
> >
> > Hi Sughosh,
> >
> > On Tue, 13 Jun 2023 at 11:39, Sughosh Ganu <sughosh.ganu at linaro.org> wrote:
> > >
> > > Add a target for building EFI capsules. The capsule parameters are
> > > specified through a config file, and the path to the config file is
> > > specified through CONFIG_EFI_CAPSULE_CFG_FILE. When the config file is
> > > not specified, the command only builds tools.
> > >
> > > Signed-off-by: Sughosh Ganu <sughosh.ganu at linaro.org>
> > > ---
> > >  Makefile | 9 +++++++++
> > >  1 file changed, 9 insertions(+)
> > >
> > > diff --git a/Makefile b/Makefile
> > > index 10bfaa52ad..96db29aa77 100644
> > > --- a/Makefile
> > > +++ b/Makefile
> > > @@ -1151,6 +1151,15 @@ dtbs: dts/dt.dtb
> > >  dts/dt.dtb: u-boot
> > >         $(Q)$(MAKE) $(build)=dts dtbs
> > >
> > > +quiet_cmd_mkeficapsule = MKEFICAPSULE $@
> > > +cmd_mkeficapsule = $(objtree)/tools/mkeficapsule $@
> > > +
> > > +PHONY += capsule
> > > +capsule: tools
> > > +ifneq ($(CONFIG_EFI_CAPSULE_CFG_FILE),"")
> > > +       $(call cmd,mkeficapsule)
> > > +endif
> > > +
> > >  quiet_cmd_copy = COPY    $@
> > >        cmd_copy = cp $< $@
> > >
> > > --
> > > 2.34.1
> > >
> >
> > We should be using binman to build images...you seem to be building
> > something in parallel with that. Can you please take a look at binman?
>
> Again, I had explored using binman for this task. The one issue where
> I find the above flow better is that I can simply build my payload
> image(s) followed by 'make capsule' to generate the capsules for
> earlier generated images. In it's current form, I don't see an easy
> way to enforce this dependency in binman when I want to build the
> payload followed by generation of capsules. I did see the mention of
> encapsulating an entry within another dependent entry, but I think
> that makes the implementation more complex than it ought to be.
>
> I think it is much easier to use the make flow to generate the images
> followed by capsules, instead of tweaking the binman node to first
> generate the payload images, followed by enabling the capsule node to
> build the capsules. If there is an easy way of enforcing this
> dependency, please let me know. Thanks

Can you share your explorations? I think the capsule should be created
as part of the build, if enabled. Rather than changing the input
files, binman should produce new output files.

We are trying to remove most of the output logic in Makefile. It
should just be producing input files for binman.

Regards,
Simon