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

[Sughosh Ganu]

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

-sughosh