From patchwork Sun Sep 29 20:08:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yousaf Kaukab X-Patchwork-Id: 1169090 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=suse.de Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46hGpW526Vz9sPG for ; Mon, 30 Sep 2019 06:09:39 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729333AbfI2UJi (ORCPT ); Sun, 29 Sep 2019 16:09:38 -0400 Received: from mx2.suse.de ([195.135.220.15]:58202 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725948AbfI2UJi (ORCPT ); Sun, 29 Sep 2019 16:09:38 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id D0506AC67; Sun, 29 Sep 2019 20:09:36 +0000 (UTC) From: Mian Yousaf Kaukab To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, treding@nvidia.com, jonathanh@nvidia.com, linux-tegra@vger.kernel.org, Mian Yousaf Kaukab Subject: [PATCH] arm64: tegra: only map accessible sysram Date: Sun, 29 Sep 2019 22:08:51 +0200 Message-Id: <20190929200851.14228-1-ykaukab@suse.de> X-Mailer: git-send-email 2.16.4 Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org Most of the SysRAM is secure and only accessible by TF-A. Don't map this inaccessible memory in kernel. Only map pages used by bpmp driver. Signed-off-by: Mian Yousaf Kaukab --- Only tegra186 is tested. Tested on Jetson TX2. arch/arm64/boot/dts/nvidia/tegra186.dtsi | 14 +++++++------- arch/arm64/boot/dts/nvidia/tegra194.dtsi | 14 +++++++------- 2 files changed, 14 insertions(+), 14 deletions(-) diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi index 47cd831fcf44..a861f46125fd 100644 --- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi @@ -1174,23 +1174,23 @@ power-domains = <&bpmp TEGRA186_POWER_DOMAIN_GPU>; }; - sysram@30000000 { + sysram@3004e000 { compatible = "nvidia,tegra186-sysram", "mmio-sram"; - reg = <0x0 0x30000000 0x0 0x50000>; + reg = <0x0 0x3004e000 0x0 0x2000>; #address-cells = <2>; #size-cells = <2>; - ranges = <0 0x0 0x0 0x30000000 0x0 0x50000>; + ranges = <0 0x0 0x0 0x3004e000 0x0 0x2000>; - cpu_bpmp_tx: shmem@4e000 { + cpu_bpmp_tx: shmem@e000 { compatible = "nvidia,tegra186-bpmp-shmem"; - reg = <0x0 0x4e000 0x0 0x1000>; + reg = <0x0 0x0 0x0 0x1000>; label = "cpu-bpmp-tx"; pool; }; - cpu_bpmp_rx: shmem@4f000 { + cpu_bpmp_rx: shmem@f000 { compatible = "nvidia,tegra186-bpmp-shmem"; - reg = <0x0 0x4f000 0x0 0x1000>; + reg = <0x0 0x1000 0x0 0x1000>; label = "cpu-bpmp-rx"; pool; }; diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi index 3c0cf54f0aab..98b9399d6b7f 100644 --- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi @@ -1430,23 +1430,23 @@ 0x82000000 0x0 0x40000000 0x1f 0x40000000 0x0 0xc0000000>; /* non-prefetchable memory (3GB) */ }; - sysram@40000000 { + sysram@4004e000 { compatible = "nvidia,tegra194-sysram", "mmio-sram"; - reg = <0x0 0x40000000 0x0 0x50000>; + reg = <0x0 0x4004e000 0x0 0x2000>; #address-cells = <1>; #size-cells = <1>; - ranges = <0x0 0x0 0x40000000 0x50000>; + ranges = <0x0 0x0 0x4004e000 0x2000>; - cpu_bpmp_tx: shmem@4e000 { + cpu_bpmp_tx: shmem@e000 { compatible = "nvidia,tegra194-bpmp-shmem"; - reg = <0x4e000 0x1000>; + reg = <0x0 0x1000>; label = "cpu-bpmp-tx"; pool; }; - cpu_bpmp_rx: shmem@4f000 { + cpu_bpmp_rx: shmem@f000 { compatible = "nvidia,tegra194-bpmp-shmem"; - reg = <0x4f000 0x1000>; + reg = <0x1000 0x1000>; label = "cpu-bpmp-rx"; pool; };