Re: [ptxdist] [PATCH] barebox: Copy TF-A binaries in to barebox firmware directory

[Michael Olbrich <m.olbrich@pengutronix.de>]

On Thu, Mar 13, 2025 at 03:28:33PM +0100, Michael Tretter wrote:
> On Thu, 13 Mar 2025 13:21:50 +0100, Benjamin Gaignard wrote:
> > If ARM trusted firmware option has been selected copy the
> > generated bl32 binaries to barebox firmware directory so they
> > can be included in barebox build process.
> > 
> > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> > ---
> >  rules/barebox.make | 10 ++++++++++
> >  1 file changed, 10 insertions(+)
> > 
> > diff --git a/rules/barebox.make b/rules/barebox.make
> > index c0d9c5744..15c06d685 100644
> > --- a/rules/barebox.make
> > +++ b/rules/barebox.make
> > @@ -119,6 +119,16 @@ ifdef PTXCONF_BAREBOX_EXTRA_ENV
> >  			$(BAREBOX_BUILD_DIR)/.config; \
> >  	fi
> >  endif
> > +
> > +ifdef PTXCONF_TF_A
> > +	mkdir -p $(BAREBOX_BUILD_DIR)/firmware/
> > +	@for i in `find $(PTXCONF_SYSROOT_TARGET)/usr/lib/firmware/ -maxdepth 1 \
> > +	-type f -name *-bl31.bin -printf "%f\n"`; do \
> > +		cp $(PTXCONF_SYSROOT_TARGET)/usr/lib/firmware/$$i $(BAREBOX_BUILD_DIR)/firmware/; \
> > +		cp $(PTXCONF_SYSROOT_TARGET)/usr/lib/firmware/$$i $(BAREBOX_DIR)/firmware/; \
> > +	done
> > +endif
> > +
> 
> There is already a (underdocumented) mechanism to copy binaries to the
> barebox firmware directory: The PTXCONF_BAREBOX_FIRMWARE option and the
> world/inject call.
> 
> Enable PTXCONF_BAREBOX_FIRMWARE and add the filenames of the binaries
> that you want to install and their target location to the
> BAREBOX_INJECT_FILES variable. The inject mechanism copies the files
> from /usr/lib/firmware (BAREBOX_INJECT_PATH) to a specified location in
> the barebox build directory.

The patches[1] that introduced this feature also contained integration for
rockchip firmware. I did not apply those patches, but they are a good place
to look at if you need to do your own integration in your BSP.

Michael


[1] https://lore.ptxdist.org/ptxdist/20220129070330.2601433-1-michael.riesch@wolfvision.net/

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |