From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 36543C43387 for ; Thu, 10 Jan 2019 11:05:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 083CD214DA for ; Thu, 10 Jan 2019 11:05:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728229AbfAJLE7 convert rfc822-to-8bit (ORCPT ); Thu, 10 Jan 2019 06:04:59 -0500 Received: from mail.bootlin.com ([62.4.15.54]:42125 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726925AbfAJLE7 (ORCPT ); Thu, 10 Jan 2019 06:04:59 -0500 Received: by mail.bootlin.com (Postfix, from userid 110) id CDE97209D7; Thu, 10 Jan 2019 12:04:56 +0100 (CET) Received: from localhost (alyon-652-1-61-72.w109-213.abo.wanadoo.fr [109.213.84.72]) by mail.bootlin.com (Postfix) with ESMTPSA id 94941206DC; Thu, 10 Jan 2019 12:04:46 +0100 (CET) From: Gregory CLEMENT To: Heinrich Schuchardt Cc: Jason Cooper , Andrew Lunn , Sebastian Hesselbarth , Rob Herring , Mark Rutland , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/1] arm64: dts: marvell: armada-ap806: reserve PSCI area References: <20181221164503.5128-1-xypron.glpk@gmx.de> Date: Thu, 10 Jan 2019 12:04:46 +0100 In-Reply-To: <20181221164503.5128-1-xypron.glpk@gmx.de> (Heinrich Schuchardt's message of "Fri, 21 Dec 2018 17:45:03 +0100") Message-ID: <874lagpycx.fsf@FE-laptop> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Heinrich, On ven., déc. 21 2018, Heinrich Schuchardt wrote: > The memory area [0x4000000-0x4200000[ is occupied by the PSCI firmware. Any > attempt to access it from Linux leads to an immediate crash. > > So let's make the same memory reservation as the vendor kernel. > > Signed-off-by: Heinrich Schuchardt Applied on mvebu/fixes I added a comment about the use with a mainline /U-Boot Thanks, Gregory > --- > v2 > Move the change from armada-8040-mcbin.dts to armada-ap806.dtsi. > I only have a MACCHIATObin for testing but > https://github.com/MarvellEmbeddedProcessors/linux-marvell > has the reservation in that file. > --- > arch/arm64/boot/dts/marvell/armada-ap806.dtsi | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi > index 7d94c1fa592a..f8dafef83db0 100644 > --- a/arch/arm64/boot/dts/marvell/armada-ap806.dtsi > +++ b/arch/arm64/boot/dts/marvell/armada-ap806.dtsi > @@ -28,6 +28,17 @@ > method = "smc"; > }; > > + reserved-memory { > + #address-cells = <2>; > + #size-cells = <2>; > + ranges; > + > + psci-area@4000000 { > + reg = <0x0 0x4000000 0x0 0x200000>; > + no-map; > + }; > + }; > + > ap806 { > #address-cells = <2>; > #size-cells = <2>; > -- > 2.19.2 > -- Gregory Clement, Bootlin Embedded Linux and Kernel engineering http://bootlin.com