[PATCH v6 2/2] board: kontron: pitx-imx8m: Add Kontron pitx-imx8m board support

[Heiko Thiery]

Hi,

Am Fr., 22. Okt. 2021 um 14:37 Uhr schrieb Stefano Babic <sbabic at denx.de>:
>
> Hi Heiko,
>
> On 22.10.21 10:19, Heiko Thiery wrote:
> > Hi Stefano, Hi Simon,
> >
> > Am Do., 21. Okt. 2021 um 15:57 Uhr schrieb Heiko Thiery
> > <heiko.thiery at gmail.com>:
> >>
> >> Hi Stefano, Hi Simon,
> >>
> >>
> >> Am Do., 21. Okt. 2021 um 15:29 Uhr schrieb Stefano Babic <sbabic at denx.de>:
> >>>
> >>> On 21.10.21 15:17, Heiko Thiery wrote:
> >>>> Hi Stefano,
> >>>>
> >>>>
> >>>> Am Do., 21. Okt. 2021 um 13:31 Uhr schrieb Stefano Babic <sbabic at denx.de>:
> >>>>>
> >>>>> Hi Heiko,
> >>>>>
> >>>>> On 14.10.21 20:08, Heiko Thiery wrote:
> >>>>>> The Kontron pitx-imx8m is an NXP i.MX8MQ based board in the pITX
> >>>>>> form factor.
> >>>>>>
> >>>>>
> >>>>> There is still something using binman that does not work with CI.
> >>>>> Without CI, we load all firmware including signed_hdmi_imx8m.bin.
> >>>>>
> >>>>> But on CI, file is not loaded, but instead of warnings, build for this
> >>>>> board fails with :
> >>>>>
> >>>>> +Image 'main-section' is missing external blobs and is non-functional:
> >>>>> blob-ext at 1 blob-ext at 2 blob-ext at 3 blob-ext at 4
> >>>>> +binman: Error 1 running 'mkimage -d ./mkimage.spl.mkimage -n
> >>>>> spl/u-boot-spl.cfgout -T imx8mimage -e 0x7e1000
> >>>>> ./mkimage-out.spl.mkimage': signed_hdmi_imx8m.bin: Can't open: No such
> >>>>> file or directory
> >>>>> +
> >>>>>
> >>>>> Could you take a look ?
> >>>>
> >>>> Sure. Could you point me to the right CI configuration?
> >>>>
> >>>
> >>> Configuration is in .gitlab-ci.yml. For thsi board, buildman is called
> >>> as part of aarch64 target, that is
> >>>
> >>>          buildman -o /tmp -P -E -W arm -x aarch64
> >>>
> >>>> I need to understand how the required imx-firmware files are copied to
> >>>> the u-boot dir. This seems to work already for e. g. the imx8mm
> >>>> boards. These require the lpdd* train fw files.
> >>
> >> Here we seem to hit an issue with the CI. blobs (lpddr*) are required
> >> for the imx8mm boards. Binman reports the missing files only as a
> >> warning and buildman does not care about that:
> >> ----
> >> +WARNING 'mkimage.flash.mkimage' not found, resulting binary is not-functional
> >> ----
> >>
> >> With the imx8mq boards switching to binman we also need an additional
> >> fw part (signed_hdmi_imx8m.bin). But other than the lpddr firmware as
> >> blob the signed_hmdi'_imx8m.bin is passed to mkimage and mkimage exits
> >> with an error. Thats leads to the error:
> >> ----
> >> binman: Error 1 running 'mkimage -d ./mkimage.spl.mkimage -n
> >> spl/u-boot-spl.cfgout -T imx8mimage -e 0x7e1000
> >> ./mkimage-out.spl.mkimage': signed_hdmi_imx8m.bin: Can't open: No such
> >> file or directory
> >> ----
> >>
> >> Currently I do not have an idea how to handle that. Anyone else?
> >
> > I thought about it a little and did a quick hack. What do you think
> > about dummy files being generated for buildman?
>
> I had quite the same idea...
>
> > I had buildman
> > generate the blobs needed by binman. So at least the build runs
> > through successfully.
>
> But it should be checked if files are present - I guess there are people
> relying on buildman to produce the functional bootloader, and a dummy
> file cannot overwrite the right one if present.

Sure. As said ,this was only a quick hack to see if it could work.
Another thing is if there should be a config for each board that says
what files have to be created.

> > I don't know yet how to integrate this sensibly
> > into buildman or if this is useful for the maintainers at all. But
> > this would get rid of the warnings and errors that come from binman.
> >
> >
> > diff --git a/tools/buildman/board.py b/tools/buildman/board.py
> > index 447aaabea8..cf270c8b72 100644
> > --- a/tools/buildman/board.py
> > +++ b/tools/buildman/board.py
> > @@ -96,6 +96,28 @@ class Board:
> >                         self.vendor, self.soc, self.options]
> >           self.build_it = False
> >
> > +    def create_dummy_files(self, work_dir):
> > +        import configparser
> > +        import os
> > +
> > +        settings = configparser.SafeConfigParser()
> > +        config_fname = '%s/.buildman/' % os.getenv('HOME')
> > +        if os.path.exists(config_fname):
> > +            settings.read(config_fname)
> > +
> > +        if self.target == "kontron_pitx_imx8m":
> > +
> > +            dummy_files = ['bl31.bin',
> > +                           'signed_hdmi_imx8m.bin',
> > +                           'lpddr4_pmu_train_1d_imem.bin',
> > +                           'lpddr4_pmu_train_1d_dmem.bin',
> > +                           'lpddr4_pmu_train_2d_imem.bin',
> > +                           'lpddr4_pmu_train_2d_dmem.bin'
> > +                          ]
> > +            for dummy_file in dummy_files:
> > +                dummy = os.path.join(work_dir, 'build', dummy_file)
> > +                with open(dummy, "wb") as out:
> > +                    out.truncate(1024)
> >
> >   class Boards:
> >       """Manage a list of boards."""
> > diff --git a/tools/buildman/builderthread.py b/tools/buildman/builderthread.py
> > index 48128cf673..dee7d9b0fe 100644
> > --- a/tools/buildman/builderthread.py
> > +++ b/tools/buildman/builderthread.py
> > @@ -475,6 +475,7 @@ class BuilderThread(threading.Thread):
> >           """
> >           brd = job.board
> >           work_dir = self.builder.GetThreadDir(self.thread_num)
> > +        brd.create_dummy_files(work_dir)
> >           self.toolchain = None
> >           if job.commits:
> >               # Run 'make board_defconfig' on the first commit
> >


-- 
Heiko