From: Simon Glass <sjg@chromium.org>
To: Yannic Moog <Y.Moog@phytec.de>
Cc: "alpernebiyasak@gmail.com" <alpernebiyasak@gmail.com>,
Benjamin Hahn <B.Hahn@phytec.de>,
"trini@konsulko.com" <trini@konsulko.com>,
"festevam@gmail.com" <festevam@gmail.com>,
Yashwanth Varakala <Y.Varakala@phytec.de>,
"upstream@lists.phytec.de" <upstream@lists.phytec.de>,
"tharvey@gateworks.com" <tharvey@gateworks.com>,
"u-boot@lists.denx.de" <u-boot@lists.denx.de>,
Teresa Remmet <T.Remmet@phytec.de>
Subject: Re: [PATCH RFC 6/6] binman: doc: update Optional entries
Date: Fri, 14 Feb 2025 06:48:50 -0700 [thread overview]
Message-ID: <CAFLszTjhYPkaQdtxrNNkLnfg=YkJ6f7JRtg=jPjDR2h_DD8Wkg@mail.gmail.com> (raw)
In-Reply-To: <d3bfaf2fda01b1ace77d3335028bb5adcf536197.camel@phytec.de>
Hi Yannic,
On Fri, 14 Feb 2025 at 00:05, Yannic Moog <Y.Moog@phytec.de> wrote:
>
> On Thu, 2025-02-13 at 07:01 -0700, Simon Glass wrote:
> > Hi Yannic,
> >
> > On Thu, 13 Feb 2025 at 00:21, Yannic Moog <Y.Moog@phytec.de> wrote:
> > >
> > > On Mon, 2025-02-10 at 06:08 -0700, Simon Glass wrote:
> > > > On Wed, 29 Jan 2025 at 03:30, Yannic Moog <y.moog@phytec.de> wrote:
> > > > >
> > > > > The binman documentation of Optional entries is not accurate in the
> > > > > sense that it does not cover blobs entry type. As this is also the most
> > > > > widely used type to have the optional entry, document the interaction
> > > > > with faking blobs.
> > > > >
> > > > > Signed-off-by: Yannic Moog <y.moog@phytec.de>
> > > > > ---
> > > > > tools/binman/binman.rst | 9 ++++++++-
> > > > > 1 file changed, 8 insertions(+), 1 deletion(-)
> > > > >
> > > > > diff --git a/tools/binman/binman.rst b/tools/binman/binman.rst
> > > > > index 990fc295770..2bafa6ca408 100644
> > > > > --- a/tools/binman/binman.rst
> > > > > +++ b/tools/binman/binman.rst
> > > > > @@ -1145,7 +1145,14 @@ called on all entries.
> > > > > It is not possible for an entry to mark itself absent at any other point in the
> > > > > processing. It must happen in the ObtainContents() method.
> > > > >
> > > > > -The effect is as if the entry had never been present at all, since the image
> > > > > +The effect depends on the type of entry.
> > > > > +
> > > > > +Blobs
> > > > > +~~~~~
> > > > > +For blobs, the effect depends on whether --fake-ext-blobs is passed
> > > > > +to binman. (This is the case by default)
> > > > > +In case --fake-ext-blobs is set, any missing entries will be faked.
> > > > > +If not set, it is as if the entry had never been present at all, since the image
> > > > > is packed without it and it disappears from the list of entries.
> > > >
> > > > I'm not quite following this. The text seems OK but your heading
> > > > implies that things other than blobs can be faked. All of this
> > > > functionality is only for blobs.
> > >
> > > The heading is a subsection of "Optional entries". To my knowledge the "optional" property is
> > > not
> > > limited to blobs. But blobs get special treatment in regards to "optional" due to the --fake-
> > > ext-
> > > blobs option. Hence the subsection.
> > >
> > > What would you like me to change to make this clearer?
> >
> > Oh I see. Are you saying that optional entries end up in the image
> > when they are faked, external blobs? If so, that seems like a bug to
> > me.
>
> To clarify, optional images are faked only when they are missing. So in case the image is missing, a
> faked image is indeed packaged into the image.
>
OK, but I still think it is a bug. Why add an optional thing in this way?
> Here is the image map from an (phycore-)imx8mp build.
>
> Missing tee-os (faked):
>
> ImagePos Offset Size Name
> 00000000 00000000 00159e10 image
> 00000000 00000000 00159e10 section
> [...]
> 00058000 00058000 00101e10 fit
> 0005b000 00003000 000e4910 uboot
> 0005b000 00000000 000e4910 blob-ext
> 0013f910 000e7910 00008458 atf
> 0013f910 00000000 00008458 atf-blob
> 00147d68 000efd68 00000000 tee
> 00147d68 00000000 00000000 tee-os
>
> tee-os present:
>
> ImagePos Offset Size Name
> 00000000 00000000 0022b5b0 image
> 00000000 00000000 0022b5b0 section
> [...]
> 00058000 00058000 001d35b0 fit
> 0005b000 00003000 000e4910 uboot
> 0005b000 00000000 000e4910 blob-ext
> 0013f910 000e7910 00008458 atf
> 0013f910 00000000 00008458 atf-blob
> 00147d68 000efd68 000d17a0 tee
> 00147d68 00000000 000d17a0 tee-os
>
> Yannic
>
>
Regards,
Simon
next prev parent reply other threads:[~2025-02-14 13:49 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-29 10:29 [PATCH RFC 0/6] Fix handling of optional blobs in binman Yannic Moog
2025-01-29 10:29 ` [PATCH RFC 1/6] tools: binman: ftest.py: fake ext blobs per default Yannic Moog
2025-02-10 13:06 ` Simon Glass
2025-02-13 7:15 ` Yannic Moog
2025-02-13 14:01 ` Simon Glass
2025-02-14 7:18 ` Yannic Moog
2025-02-14 13:48 ` Simon Glass
2025-02-17 7:07 ` Yannic Moog
2025-01-29 10:29 ` [PATCH RFC 2/6] tools: binman: ftest: pass allow_fake_blob to _DoReadFileDtb Yannic Moog
2025-02-10 13:09 ` Simon Glass
2025-01-29 10:29 ` [PATCH RFC 3/6] tools: binman: ftest: fix tests that require non-faked ext blobs Yannic Moog
2025-02-10 13:09 ` Simon Glass
2025-02-13 7:15 ` Yannic Moog
2025-01-29 10:29 ` [PATCH RFC 4/6] binman: fix faked optional entry handling Yannic Moog
2025-02-10 13:09 ` Simon Glass
2025-01-29 10:29 ` [PATCH RFC 5/6] binman: test: assert optional blobs don't cause non-functionality Yannic Moog
2025-02-10 13:07 ` Simon Glass
2025-01-29 10:29 ` [PATCH RFC 6/6] binman: doc: update Optional entries Yannic Moog
2025-02-10 13:08 ` Simon Glass
2025-02-13 7:21 ` Yannic Moog
2025-02-13 14:01 ` Simon Glass
2025-02-14 7:05 ` Yannic Moog
2025-02-14 13:48 ` Simon Glass [this message]
2025-02-17 7:21 ` Yannic Moog
2025-02-17 13:13 ` Simon Glass
2025-02-18 13:15 ` Yannic Moog
2025-02-19 0:01 ` Simon Glass
2025-02-10 13:08 ` [PATCH RFC 0/6] Fix handling of optional blobs in binman Simon Glass
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