[PATCH v2 6/6] doc: capsule: Document the new mechanism to embed ESL file into dtb

[Sughosh Ganu]

hi Ilias,

On Thu, 17 Aug 2023 at 17:31, Ilias Apalodimas
<ilias.apalodimas at linaro.org> wrote:
>
> Hi Sughosh
>
> On Thu, 17 Aug 2023 at 08:49, Sughosh Ganu <sughosh.ganu at linaro.org> wrote:
> >
> > Update the document to specify how the EFI Signature List(ESL) file
> > can be embedded into the platform's dtb as part of the U-Boot build.
> >
> > Signed-off-by: Sughosh Ganu <sughosh.ganu at linaro.org>
> > ---
> > Changes since V1: None
> >
> >  doc/develop/uefi/uefi.rst | 19 +++++--------------
> >  1 file changed, 5 insertions(+), 14 deletions(-)
> >
> > diff --git a/doc/develop/uefi/uefi.rst b/doc/develop/uefi/uefi.rst
> > index 3ce579d46e..950f4d1a5a 100644
> > --- a/doc/develop/uefi/uefi.rst
> > +++ b/doc/develop/uefi/uefi.rst
> > @@ -539,20 +539,11 @@ and used by the steps highlighted below.
> >              ...
> >      }
> >
> > -You can do step-4 manually with
> > -
> > -.. code-block:: console
> > -
> > -    $ dtc -@ -I dts -O dtb -o signature.dtbo signature.dts
> > -    $ fdtoverlay -i orig.dtb -o new.dtb -v signature.dtbo
> > -
> > -where signature.dts looks like::
> > -
> > -    &{/} {
> > -            signature {
> > -                    capsule-key = /incbin/("CRT.esl");
> > -            };
> > -    };
> > +You can perform step-4 by defining the Kconfig symbol
> > +CONFIG_EFI_CAPSULE_ESL_FILE. This symbol defines the path to the esl
> > +file generated in step-2.
>
> It doesn't define it.  It needs to point to the file generated in step-2 no?

Yes, I will rephrase.

>
> > Once the symbol has been populated with the
> > +path to the esl file, the esl file will automatically get embedded
>
> it will automatically get included etc

Okay

-sughosh

>
> Thanks
> /Ilias
> > +into the platform's dtb as part of U-Boot build.
> >
> >  Anti-rollback Protection
> >  ************************
> > --
> > 2.34.1
> >