From patchwork Sat Jun 9 14:23:13 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 927150 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4131k0121Zz9s3C for ; Sun, 10 Jun 2018 00:24:06 +1000 (AEST) Received: from localhost ([::1]:40488 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fRemg-0007h5-Ol for incoming@patchwork.ozlabs.org; Sat, 09 Jun 2018 10:24:02 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58763) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fRem7-0007eL-Ac for qemu-devel@nongnu.org; Sat, 09 Jun 2018 10:23:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fRem6-0004O2-6u for qemu-devel@nongnu.org; Sat, 09 Jun 2018 10:23:27 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:57030 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fRem1-0004Lv-LY; Sat, 09 Jun 2018 10:23:21 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id B35FF80125D6; Sat, 9 Jun 2018 14:23:20 +0000 (UTC) Received: from localhost.localdomain.com (ovpn-116-69.ams2.redhat.com [10.36.116.69]) by smtp.corp.redhat.com (Postfix) with ESMTP id C2AE5217B409; Sat, 9 Jun 2018 14:23:19 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org Date: Sat, 9 Jun 2018 16:23:13 +0200 Message-Id: <1528554193-27270-3-git-send-email-eric.auger@redhat.com> In-Reply-To: <1528554193-27270-1-git-send-email-eric.auger@redhat.com> References: <1528554193-27270-1-git-send-email-eric.auger@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Sat, 09 Jun 2018 14:23:20 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Sat, 09 Jun 2018 14:23:20 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'eric.auger@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH 2/2] hw/arm/virt: Silence dtc /memory warning X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" When running dtc on the guest /proc/device-tree we get the following warning: Warning (unit_address_vs_reg): Node /memory has a reg or ranges property, but no unit name". Let's fix that by adding the unit address to the node name. We also don't create the /memory node anymore in create_fdt(). We directly create it in load_dtb. /chosen still needs to be created in create_fdt as the uart needs it. In case the user provided his own dtb, either the bank is added to the existing /memory node or if this latter is not found we create a new separate memory node. Signed-off-by: Eric Auger --- hw/arm/boot.c | 20 ++++++++++++++------ hw/arm/virt.c | 6 ------ 2 files changed, 14 insertions(+), 12 deletions(-) diff --git a/hw/arm/boot.c b/hw/arm/boot.c index 1e2be20..2054670 100644 --- a/hw/arm/boot.c +++ b/hw/arm/boot.c @@ -593,24 +593,32 @@ static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo, g_free(nodename); } } else { + char *nodename = g_strdup("/memory"); Error *err = NULL; - rc = fdt_path_offset(fdt, "/memory"); + /* If there is an existing /memory node (user provided dtb), we add the + * new bank into it, otherwise we create a /memory@addr node + */ + rc = fdt_path_offset(fdt, nodename); if (rc < 0) { - qemu_fdt_add_subnode(fdt, "/memory"); + g_free(nodename); + nodename = g_strdup_printf("/memory@%" PRIx64, binfo->loader_start); + + qemu_fdt_add_subnode(fdt, nodename); } - if (!qemu_fdt_getprop(fdt, "/memory", "device_type", NULL, &err)) { - qemu_fdt_setprop_string(fdt, "/memory", "device_type", "memory"); + if (!qemu_fdt_getprop(fdt, nodename, "device_type", NULL, &err)) { + qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory"); } - rc = qemu_fdt_setprop_sized_cells(fdt, "/memory", "reg", + rc = qemu_fdt_setprop_sized_cells(fdt, nodename, "reg", acells, binfo->loader_start, scells, binfo->ram_size); if (rc < 0) { - fprintf(stderr, "couldn't set /memory/reg\n"); + fprintf(stderr, "couldn't set %s reg\n", nodename); goto fail; } + g_free(nodename); } rc = fdt_path_offset(fdt, "/chosen"); diff --git a/hw/arm/virt.c b/hw/arm/virt.c index b1e9a6b..46c5c3f 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -203,13 +203,7 @@ static void create_fdt(VirtMachineState *vms) qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2); qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2); - /* - * /chosen and /memory nodes must exist for load_dtb - * to fill in necessary properties later - */ qemu_fdt_add_subnode(fdt, "/chosen"); - qemu_fdt_add_subnode(fdt, "/memory"); - qemu_fdt_setprop_string(fdt, "/memory", "device_type", "memory"); /* Clock node, for the benefit of the UART. The kernel device tree * binding documentation claims the PL011 node clock properties are