Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932069AbbGFQgL (ORCPT ); Mon, 6 Jul 2015 12:36:11 -0400 Received: from mail-wg0-f47.google.com ([74.125.82.47]:35464 "EHLO mail-wg0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754596AbbGFQgH (ORCPT ); Mon, 6 Jul 2015 12:36:07 -0400 From: Pali =?utf-8?q?Roh=C3=A1r?= To: Rob Herring Subject: Re: [RESEND] [PATCH v2 1/2] arm: devtree: Set system_rev from DT revision Date: Mon, 6 Jul 2015 18:36:03 +0200 User-Agent: KMail/1.13.7 (Linux/3.13.0-55-generic; KDE/4.14.2; x86_64; ; ) Cc: Tony Lindgren , Arnd Bergmann , "linux-arm-kernel@lists.infradead.org" , Russell King , Will Deacon , Ivaylo Dimitrov , Sebastian Reichel , Pavel Machek , Andreas =?utf-8?q?F=C3=A4rber?= , "linux-omap" , "linux-kernel@vger.kernel.org" , "devicetree@vger.kernel.org" References: <1430902142-17035-1-git-send-email-pali.rohar@gmail.com> <201507061820.35789@pali> In-Reply-To: <201507061820.35789@pali> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2173250.yWbRqrjftP"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <201507061836.03293@pali> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1587 Lines: 61 --nextPart2173250.yWbRqrjftP Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable On Monday 06 July 2015 18:20:35 Pali Roh=C3=A1r wrote: > > > "/chosen/linux,atags" > >=20 > > This one. ATAGs are a Linux data struct. > >=20 > > Rob >=20 > Ok, and how read that property "/chosen/linux,atags" in function > setup_machine_fdt() from file arch/arm/kernel/devtree.c ? >=20 > of_get_flat_dt_prop() cannot be used unless somebody get me offset to > node "/chosen"... >=20 > Any idea? >=20 fdt_path_offset() from libfdt.h seems to work... Is solution like this one acceptable? #include #include "atags.h" =2E.. setup_machine_fdt(unsigned int dt_phys) { dt_virt =3D phys_to_virt(dt_phys); dt_chosen =3D fdt_path_offset(dt_virt, "/chosen"); atags =3D of_get_flat_dt_prop(dt_chosen, "linux,atags", NULL); save_atags(atags); } (this is without checks for errors) =2D-=20 Pali Roh=C3=A1r pali.rohar@gmail.com --nextPart2173250.yWbRqrjftP Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEABECAAYFAlWarnMACgkQi/DJPQPkQ1KK8ACeMiZcY5SZoQKbwDDLM9/vyV1L XlIAoMPPtruD7bAAgb7ADcd0Urx+Cvae =jwYI -----END PGP SIGNATURE----- --nextPart2173250.yWbRqrjftP-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/