How to make .dtb from .dts file (how to set include path for #include .. ?)
Hello all, In linux kernel source, there are many .dts files (device tree source) For example there is a file ./arch/arm64/boot/dts/arm/juno.dts. To tried to make juno.dtb from juno.dts but I don't know how to do it. (by the way, once I did make for the kernel build, junno.dtb file seems to be generated in the same directory) Just in case I want to make my own .dts and .dtb, I tried compling juno.dts file. (I had installed dtc on my ubuntu 16.04 machine before) $ dtc -I dts -O dtb -o juno.dtb arch/arm64/boot/dts/arm/juno.dts Error: arch/arm64/boot/dts/arm/juno.dts:11.1-9 syntax error FATAL ERROR: Unable to parse input tree The dtc program cannot process the line below in the .dts file.(line 11) #include <dt-bindings/interrupt-controller/arm-gic.h> I don't know how I should let the preprocessing kick in. I tried (because there is include/dt-bindings/interrupt-controller/arm-gic.h) $ dtc -i include -I dts -O dtb -o juno.dtb arch/arm64/boot/dts/arm/juno.dts But it doesn't work. How can I use dtc program to make juno.dtb? Or if I have to use Makefile, what is the command? Thanks, Chan Kim
Hello Chan, On 23.02.21 09:37, ckim@etri.re.kr wrote:
I don't know how I should let the preprocessing kick in.
I tried (because there is include/dt-bindings/interrupt-controller/arm-gic.h)
$ dtc -i include -I dts -O dtb -o juno.dtb arch/arm64/boot/dts/arm/juno.dts
But it doesn't work.
dtc only handles /include/. #include is expanded by a C preprocessor that's explicitly run beforehand. Run make V=1 dtbs if you are curious to see the commands executed.
How can I use dtc program to make juno.dtb?
Or if I have to use Makefile, what is the command?
What reason for doing this by hand? Cheers, Ahmad
Thanks,
Chan Kim
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Hello Ahmad, Thanks for the kind reply. I've checked adding a .dts file in the directory and adding it in the Makefile there, and doing "make dts" at the build top does the job. As you said, I think I can just do with this method. Thank you! Best regards, Chan
-----Original Message----- From: Ahmad Fatoum <a.fatoum@pengutronix.de> Sent: Tuesday, February 23, 2021 6:28 PM To: ckim@etri.re.kr; kernelnewbies@kernelnewbies.org Subject: Re: How to make .dtb from .dts file (how to set include path for #include .. ?)
Hello Chan,
On 23.02.21 09:37, ckim@etri.re.kr wrote:
I don't know how I should let the preprocessing kick in.
I tried (because there is include/dt-bindings/interrupt-controller/arm-gic.h)
$ dtc -i include -I dts -O dtb -o juno.dtb arch/arm64/boot/dts/arm/juno.dts
But it doesn't work.
dtc only handles /include/. #include is expanded by a C preprocessor that's explicitly run beforehand. Run make V=1 dtbs if you are curious to see the commands executed.
How can I use dtc program to make juno.dtb?
Or if I have to use Makefile, what is the command?
What reason for doing this by hand?
Cheers, Ahmad
Thanks,
Chan Kim
_______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
-- 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 |
Sent from my iPhone
On Feb 23, 2021, at 5:34 PM, Martin Herdeis <martinherdeis@gmx.de> wrote:
Hello Chan,
haven't tried to build dtb myselfe yet but maybe this helps:
https://bootlin.com/pub/conferences/2013/elce/petazzoni-device-tree-dummies/... https://www.youtube.com/watch?v=m_NyYEBxfn8 https://bootlin.com/blog/device-tree-101-webinar-slides-and-videos/
Martin Gesendet: Dienstag, 23. Februar 2021 um 09:37 Uhr Von: ckim@etri.re.kr An: kernelnewbies@kernelnewbies.org Betreff: How to make .dtb from .dts file (how to set include path for #include .. ?) Hello all,
In linux kernel source, there are many .dts files (device tree source)
For example there is a file ./arch/arm64/boot/dts/arm/juno.dts.
To tried to make juno.dtb from juno.dts but I don’t know how to do it.
(by the way, once I did make for the kernel build, junno.dtb file seems to be generated in the same directory)
Just in case I want to make my own .dts and .dtb, I tried compling juno.dts file. (I had installed dtc on my ubuntu 16.04 machine before)
$ dtc -I dts -O dtb -o juno.dtb arch/arm64/boot/dts/arm/juno.dts
Error: arch/arm64/boot/dts/arm/juno.dts:11.1-9 syntax error
FATAL ERROR: Unable to parse input tree
The dtc program cannot process the line below in the .dts file.(line 11)
#include <dt-bindings/interrupt-controller/arm-gic.h>
I don’t know how I should let the preprocessing kick in.
I tried (because there is include/dt-bindings/interrupt-controller/arm-gic.h)
$ dtc -i include -I dts -O dtb -o juno.dtb arch/arm64/boot/dts/arm/juno.dts
But it doesn’t work.
How can I use dtc program to make juno.dtb?
Or if I have to use Makefile, what is the command?
Thanks,
Chan Kim
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participants (4)
-
Ahmad Fatoum -
ckim＠etri.re.kr -
linux lover -
Martin Herdeis