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From: Denis Osterland-Heim <denis.osterland@diehl.com>
To: "s.hauer@pengutronix.de" <s.hauer@pengutronix.de>
Cc: "barebox@lists.infradead.org" <barebox@lists.infradead.org>
Subject: Re: Is it possible to pass extra device-tree include directory?
Date: Fri, 26 Jun 2020 07:12:49 +0000	[thread overview]
Message-ID: <49f003eb1572d206373a34b2f3a6174cbe1be321.camel@diehl.com> (raw)
In-Reply-To: <20200626044945.GD19105@pengutronix.de>

Hi Sascha,

which implementation variant would you prefer?

1) target specific flags
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 9aa8be535f30..6f341a6e3e86 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -164,6 +164,7 @@ dtc_cpp_flags  = -Wp,-MD,$(depfile).pre -nostdinc                        \
 		 -I$(srctree)/dts/include                                \
 		 -I$(srctree)/include                                    \
 		 -I$(srctree)/dts/src/                                   \
+		 $(DTC_CPP_FLAGS_$(basetarget).dtb)                      \
 		 -undef -D__DTS__
 
 ifdef CONFIG_BOOTM_FITIMAGE_PUBKEY

with something like this in arch/arm/dts/Makefile:
DTC_CPP_FLAGS_my-board-name.dtb := -I${PTXDIST_PLATFORMCONFIGDIR}/dts
lwl-dtb-$(CONFIG_MACH_MY_BOARD_NAME) += my-board-name.dtb.o

So we can clearly state that the device-tree is out of barebox tree.


2) add EXTRA_DTC_CPP_FLAGS to Makefile.lib, to pass it to make


3) add $(patsubst "%",%,$(CONFIG_DTC_CPP_FLAGS)) to Makefile.lib, and a Kconfig option

diff --git a/common/Kconfig b/common/Kconfig
index 02ef3631e04b..074f25aa6b7f 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -1347,3 +1347,6 @@ config DDR_SPD
 
 config HAVE_ARCH_KASAN
        bool
+
+config DTC_CPP_FLAGS
+       string "extra dtc-cpp flags"


Regards Denis

Am Freitag, den 26.06.2020, 06:49 +0200 schrieb Sascha Hauer:
> Hi Denis,
> 
> On Mon, Jun 22, 2020 at 07:42:11AM +0000, Denis Osterland-Heim wrote:
> > Hi,
> > 
> > is it possible to pass extra device-tree include directory?
> > For instance "${PTXDIST_PLATFORMCONFIGDIR}/dts" to have a out-of-tree dts only in one place?
> 
> I am not aware of any possibility doing this currently.
> 
> Regards,
>  Sascha
> 


Diehl Connectivity Solutions GmbH
Geschäftsführung: Horst Leonberger
Sitz der Gesellschaft: Nürnberg - Registergericht: Amtsgericht
Nürnberg: HRB 32315
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  reply	other threads:[~2020-06-26  9:19 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-22  7:42 Denis Osterland-Heim
2020-06-26  4:49 ` Sascha Hauer
2020-06-26  7:12   ` Denis Osterland-Heim [this message]
2020-06-29  8:26     ` Ahmad Fatoum
2020-07-01  8:49       ` Denis Osterland-Heim
2020-07-02  9:21         ` Ahmad Fatoum

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