[RFC] imx8mm-evk: Generate a bootable flash.bin again

[Heiko Thiery]

Hi,

Am Di., 17. Aug. 2021 um 05:56 Uhr schrieb Heiko Schocher <hs at denx.de>:
>
> Hello Fabio,
>
> On 16.08.21 17:21, Fabio Estevam wrote:
> > After the convesion to binman in commit 8996e6b7c6a1 ("imx8mm_evk: switch
> > to use binman to pack images"), it is necessary to flash both flash.bin and
> > u-boot.itb to get a bootable system. Prior to this commit, only flash.bin
> > was needed.
> >
> > Such new requirement breaks existing distro mechanisms to generate the
> > final image because the extra u-boot.itb is now required.
> >
> > Generate a final flash.bin image that can be used again as a single
> > bootable image to keep the original behavior.
> >
> > Suggested-by: Heiko Schocher <hs at denx.de>
> > Signed-off-by: Fabio Estevam <festevam at denx.de>
> > ---
> >  arch/arm/dts/imx8mm-evk-u-boot.dtsi | 15 +++++++++++++++
> >  1 file changed, 15 insertions(+)
> >
> > diff --git a/arch/arm/dts/imx8mm-evk-u-boot.dtsi b/arch/arm/dts/imx8mm-evk-u-boot.dtsi
> > index f200afac9f..ad3056c7c8 100644
> > --- a/arch/arm/dts/imx8mm-evk-u-boot.dtsi
> > +++ b/arch/arm/dts/imx8mm-evk-u-boot.dtsi
> > @@ -217,4 +217,19 @@
> >                       };
> >               };
> >       };
> > +
> > +     imx-boot {
> > +             filename = "flash.bin";
>
> I am unsure here, if it makes sense to overwrite flash.bin with the
> binary which contains SPL and u-boot.itb. May others want to use
> them (as I currently use them for signing them)
>
> Why not imx-boot as image name as in NXP sources?
> (Thats why I named it so in my "fast example approach")

Is it right that in that case a new u-boot makefile target has to be
set? Currently flash.bin works because it is already set in
"arch/arm/mach-imx/Makefile"?

-- 
Heiko