From: "Pali Rohár" <pali.rohar@gmail.com>
To: Rob Herring <robherring2@gmail.com>
Cc: "Tony Lindgren" <tony@atomide.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"Russell King" <linux@arm.linux.org.uk>,
"Will Deacon" <will.deacon@arm.com>,
"Ivaylo Dimitrov" <ivo.g.dimitrov.75@gmail.com>,
"Sebastian Reichel" <sre@debian.org>,
"Pavel Machek" <pavel@ucw.cz>,
"Andreas Färber" <afaerber@suse.de>,
linux-omap <linux-omap@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Subject: Re: [RESEND] [PATCH v2 1/2] arm: devtree: Set system_rev from DT revision
Date: Mon, 6 Jul 2015 18:36:03 +0200 [thread overview]
Message-ID: <201507061836.03293@pali> (raw)
In-Reply-To: <201507061820.35789@pali>
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On Monday 06 July 2015 18:20:35 Pali Rohár wrote:
> > > "/chosen/linux,atags"
> >
> > This one. ATAGs are a Linux data struct.
> >
> > Rob
>
> Ok, and how read that property "/chosen/linux,atags" in function
> setup_machine_fdt() from file arch/arm/kernel/devtree.c ?
>
> of_get_flat_dt_prop() cannot be used unless somebody get me offset to
> node "/chosen"...
>
> Any idea?
>
fdt_path_offset() from libfdt.h seems to work...
Is solution like this one acceptable?
#include <linux/libfdt.h>
#include "atags.h"
... setup_machine_fdt(unsigned int dt_phys) {
dt_virt = phys_to_virt(dt_phys);
dt_chosen = fdt_path_offset(dt_virt, "/chosen");
atags = of_get_flat_dt_prop(dt_chosen, "linux,atags", NULL);
save_atags(atags);
}
(this is without checks for errors)
--
Pali Rohár
pali.rohar@gmail.com
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WARNING: multiple messages have this Message-ID (diff)
From: pali.rohar@gmail.com (Pali Rohár)
To: linux-arm-kernel@lists.infradead.org
Subject: [RESEND] [PATCH v2 1/2] arm: devtree: Set system_rev from DT revision
Date: Mon, 6 Jul 2015 18:36:03 +0200 [thread overview]
Message-ID: <201507061836.03293@pali> (raw)
In-Reply-To: <201507061820.35789@pali>
On Monday 06 July 2015 18:20:35 Pali Roh?r wrote:
> > > "/chosen/linux,atags"
> >
> > This one. ATAGs are a Linux data struct.
> >
> > Rob
>
> Ok, and how read that property "/chosen/linux,atags" in function
> setup_machine_fdt() from file arch/arm/kernel/devtree.c ?
>
> of_get_flat_dt_prop() cannot be used unless somebody get me offset to
> node "/chosen"...
>
> Any idea?
>
fdt_path_offset() from libfdt.h seems to work...
Is solution like this one acceptable?
#include <linux/libfdt.h>
#include "atags.h"
... setup_machine_fdt(unsigned int dt_phys) {
dt_virt = phys_to_virt(dt_phys);
dt_chosen = fdt_path_offset(dt_virt, "/chosen");
atags = of_get_flat_dt_prop(dt_chosen, "linux,atags", NULL);
save_atags(atags);
}
(this is without checks for errors)
--
Pali Roh?r
pali.rohar at gmail.com
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next prev parent reply other threads:[~2015-07-06 16:36 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-06 8:49 [RESEND] [PATCH v2 0/2] ARM: /proc/cpuinfo: DT: Add support for Revision Pali Rohár
2015-05-06 8:49 ` Pali Rohár
2015-05-06 8:49 ` Pali Rohár
2015-05-06 8:49 ` [RESEND] [PATCH v2 1/2] arm: devtree: Set system_rev from DT revision Pali Rohár
2015-05-06 8:49 ` Pali Rohár
2015-05-06 8:49 ` Pali Rohár
2015-05-06 9:31 ` Arnd Bergmann
2015-05-06 9:31 ` Arnd Bergmann
2015-05-06 10:37 ` Pali Rohár
2015-05-06 10:37 ` Pali Rohár
2015-05-06 10:37 ` Pali Rohár
2015-05-06 11:04 ` Arnd Bergmann
2015-05-06 11:04 ` Arnd Bergmann
2015-05-06 11:44 ` Pali Rohár
2015-05-06 11:44 ` Pali Rohár
2015-05-06 11:44 ` Pali Rohár
2015-06-25 5:01 ` Tony Lindgren
2015-06-25 5:01 ` Tony Lindgren
2015-06-25 7:18 ` Pali Rohár
2015-06-25 7:18 ` Pali Rohár
2015-06-25 7:22 ` Tony Lindgren
2015-06-25 7:22 ` Tony Lindgren
2015-06-25 7:22 ` Tony Lindgren
2015-06-25 7:27 ` Pali Rohár
2015-06-25 7:27 ` Pali Rohár
2015-06-25 7:41 ` Tony Lindgren
2015-06-25 7:41 ` Tony Lindgren
2015-06-25 7:41 ` Tony Lindgren
[not found] ` <20150625050138.GL4156-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2015-07-06 12:23 ` Pali Rohár
2015-07-06 12:23 ` Pali Rohár
2015-07-06 12:23 ` Pali Rohár
2015-07-06 12:31 ` Tony Lindgren
2015-07-06 12:31 ` Tony Lindgren
[not found] ` <20150706123126.GG10705-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2015-07-06 13:12 ` Pali Rohár
2015-07-06 13:12 ` Pali Rohár
2015-07-06 13:12 ` Pali Rohár
2015-07-06 13:55 ` Tony Lindgren
2015-07-06 13:55 ` Tony Lindgren
2015-07-06 13:55 ` Tony Lindgren
2015-07-06 15:22 ` Rob Herring
2015-07-06 15:22 ` Rob Herring
[not found] ` <CAL_Jsq+ysDqxTgfW1JvG5czHa4UkZQDv1BN63iK4jvV9kDXM8w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-07-06 16:20 ` Pali Rohár
2015-07-06 16:20 ` Pali Rohár
2015-07-06 16:20 ` Pali Rohár
2015-07-06 16:36 ` Pali Rohár [this message]
2015-07-06 16:36 ` Pali Rohár
2015-07-06 17:30 ` Rob Herring
2015-07-06 17:30 ` Rob Herring
2015-07-06 15:20 ` Rob Herring
2015-07-06 15:20 ` Rob Herring
2015-07-06 15:24 ` Tony Lindgren
2015-07-06 15:24 ` Tony Lindgren
2015-06-25 10:03 ` Russell King - ARM Linux
2015-06-25 10:03 ` Russell King - ARM Linux
2015-06-25 10:03 ` Russell King - ARM Linux
2015-05-06 8:49 ` [RESEND] [PATCH v2 2/2] arm: boot: convert ATAG_REVISION to DT revision field Pali Rohár
2015-05-06 8:49 ` Pali Rohár
2015-05-06 8:49 ` Pali Rohár
2015-05-15 19:50 ` [PATCH 0/2] ARM: /proc/atags: Export also for DT Pali Rohár
2015-05-15 19:50 ` Pali Rohár
2015-05-15 19:50 ` Pali Rohár
2015-05-15 19:50 ` [PATCH 1/2] arm: devtree: Save atags if are in DT atags field Pali Rohár
2015-05-15 19:50 ` Pali Rohár
2015-05-15 20:09 ` Arnd Bergmann
2015-05-15 20:09 ` Arnd Bergmann
2015-06-25 5:06 ` Tony Lindgren
2015-06-25 5:06 ` Tony Lindgren
2015-05-15 19:50 ` [PATCH 2/2] arm: boot: store ATAG structure into " Pali Rohár
2015-05-15 19:50 ` Pali Rohár
2015-05-15 20:12 ` Arnd Bergmann
2015-05-15 20:12 ` Arnd Bergmann
2015-05-15 20:12 ` Arnd Bergmann
2015-05-15 20:16 ` Pali Rohár
2015-05-15 20:16 ` Pali Rohár
2015-05-15 20:21 ` Arnd Bergmann
2015-05-15 20:21 ` Arnd Bergmann
2015-05-15 20:21 ` Arnd Bergmann
2015-06-25 5:12 ` Tony Lindgren
2015-06-25 5:12 ` Tony Lindgren
2015-06-25 10:02 ` [PATCH 0/2] ARM: /proc/atags: Export also for DT Russell King - ARM Linux
2015-06-25 10:02 ` Russell King - ARM Linux
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