From mboxrd@z Thu Jan 1 00:00:00 1970 From: pali.rohar@gmail.com (Pali =?utf-8?q?Roh=C3=A1r?=) Date: Mon, 6 Jul 2015 18:36:03 +0200 Subject: [RESEND] [PATCH v2 1/2] arm: devtree: Set system_rev from DT revision In-Reply-To: <201507061820.35789@pali> References: <1430902142-17035-1-git-send-email-pali.rohar@gmail.com> <201507061820.35789@pali> Message-ID: <201507061836.03293@pali> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 #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 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part. URL: