From nobody Sun Nov 24 13:38:59 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=reject dis=none) header.from=linux.ibm.com ARC-Seal: i=1; a=rsa-sha256; t=1722456741; cv=none; d=zohomail.com; s=zohoarc; b=lodkbtstHaUfI0aD+JEWFo4o3ZAhK+02nM54Pj1pv2FKcjtaNa7I7lhGPHoKBlSW0MqL1z1+uYVb3u4x2KBzxmtgRerdNdA4Lmb3jLZVE41a1Ntl2yx8IIAkOCvQjY6xCX27qfOWJLAKdWm2oPeU7X5rAkpwiz1mfRu6UAoUqIE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1722456741; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=VJg2ON4OoRSFTx5cP1Ms0Ha1sJvSsCoJCuOQts5+dvc=; b=hQpK2UzgcmDUpeWxNEQs0Q1eBLu9YOaV6GbERK4jAQKN6Ocd05HDb+FXlJ1X6TGnFlo4UykMy8JCFAJd3BcHXfqMmtipCZvEIyAloA9WPWeZHHap8AtpopwnlgdSiL4FuZOaE7NHn8n9DKHRMe7u8JTGhkG6zUMEEWQCWj16mOg= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=reject dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 172245674101978.50733948235484; Wed, 31 Jul 2024 13:12:21 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sZFfG-0003am-0x; Wed, 31 Jul 2024 16:11:14 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sZFf2-0003ZS-GY; Wed, 31 Jul 2024 16:11:01 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sZFez-00043t-0U; Wed, 31 Jul 2024 16:10:59 -0400 Received: from pps.filterd (m0353729.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 46VISXda000878; Wed, 31 Jul 2024 20:10:51 GMT Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 40qtjvrcrf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 31 Jul 2024 20:10:50 +0000 (GMT) Received: from m0353729.ppops.net (m0353729.ppops.net [127.0.0.1]) by pps.reinject (8.18.0.8/8.18.0.8) with ESMTP id 46VKAoCG024525; Wed, 31 Jul 2024 20:10:50 GMT Received: from ppma12.dal12v.mail.ibm.com (dc.9e.1632.ip4.static.sl-reverse.com [50.22.158.220]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 40qtjvrcrc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 31 Jul 2024 20:10:50 +0000 (GMT) Received: from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1]) by ppma12.dal12v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 46VJd6lg007462; Wed, 31 Jul 2024 20:10:49 GMT Received: from smtprelay04.fra02v.mail.ibm.com ([9.218.2.228]) by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 40nb7ue2t1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 31 Jul 2024 20:10:49 +0000 Received: from smtpav05.fra02v.mail.ibm.com (smtpav05.fra02v.mail.ibm.com [10.20.54.104]) by smtprelay04.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 46VKAhtW29884946 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 31 Jul 2024 20:10:45 GMT Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9507620043; Wed, 31 Jul 2024 20:10:43 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2410C20040; Wed, 31 Jul 2024 20:10:41 +0000 (GMT) Received: from li-3c92a0cc-27cf-11b2-a85c-b804d9ca68fa.ibm.com.com (unknown [9.124.222.219]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 31 Jul 2024 20:10:40 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from :to:cc:subject:date:message-id:mime-version :content-transfer-encoding; s=pp1; bh=VJg2ON4OoRSFTx5cP1Ms0Ha1sJ vSsCoJCuOQts5+dvc=; b=jx294oGflb9hGKGs6UcTVpU7cITqg0ROhznidRJcv2 lZc/NZEr4o7i6ZUvn6LeLzdynCQiNxw5T1BSNq5j6oDUqlqFi0BYF31cT8RoVnFB LEPTmF77AmikS/h79xvHRZVm07C6hxT1/5VCHHgWij6Zyh/3NeH+EZ9thNgbJ7mi tCdQ1RLgJWZFKYhjDL2VCPO3A24FScXE08tlkdEeRK7jBdldMRvI+R9PpRHX4fe3 4UnkXZqknm55Itdp9iacsKxg1kGBIFbNG/EsLv9tK6dp6G6eRALlvUA2Yqo9Nbjb J1htupHqGB7T/qk/kQ+u0fuRETYkewdiBBxGtoAPsveg== From: Aditya Gupta To: Mahesh J Salgaonkar , Madhavan Srinivasan , Nicholas Piggin , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Harsh Prateek Bora , =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20Barrat?= , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Cc: , Subject: [PATCH] hw/ppc: Implement -dtb support for PowerNV Date: Thu, 1 Aug 2024 01:40:39 +0530 Message-ID: <20240731201039.1011028-1-adityag@linux.ibm.com> X-Mailer: git-send-email 2.45.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: ymTmt-txA6aEQR00T32X0zJV662qrluB X-Proofpoint-GUID: XQZjZFLfVi8mVEn0_RAQLmt72x432vQ_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-07-31_10,2024-07-31_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 priorityscore=1501 mlxscore=0 spamscore=0 malwarescore=0 lowpriorityscore=0 mlxlogscore=912 clxscore=1015 bulkscore=0 adultscore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2407310136 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=148.163.156.1; envelope-from=adityag@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @ibm.com) X-ZM-MESSAGEID: 1722456745272116600 Content-Type: text/plain; charset="utf-8" Currently any device tree passed with -dtb option in QEMU, was ignored by the PowerNV code. Read and pass the passed -dtb to the kernel, thus enabling easier debugging with custom DTBs. The existing behaviour when -dtb is 'not' passed, is preserved as-is. But when a '-dtb' is passed, it completely overrides any dtb nodes or changes QEMU might have done, such as '-append' arguments to the kernel (which are mentioned in /chosen/bootargs in the dtb), hence add warning when -dtb is being used Signed-off-by: Aditya Gupta --- Changelog =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D v1: + use 'g_file_get_contents' and add check for -append & -dtb as suggested b= y Daniel --- --- hw/ppc/pnv.c | 25 ++++++++++++++++++++++--- 1 file changed, 22 insertions(+), 3 deletions(-) diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c index 3526852685b4..03600fa62cbd 100644 --- a/hw/ppc/pnv.c +++ b/hw/ppc/pnv.c @@ -736,10 +736,21 @@ static void pnv_reset(MachineState *machine, Shutdown= Cause reason) } } =20 - fdt =3D pnv_dt_create(machine); + if (machine->dtb) { + warn_report("with manually passed dtb, some options like '-append'" + " will get ignored and the dtb passed will be used as-is"); =20 - /* Pack resulting tree */ - _FDT((fdt_pack(fdt))); + /* read the file 'machine->dtb', and load it into 'fdt' buffer */ + if (!g_file_get_contents(machine->dtb, (gchar **)&fdt, NULL, NULL)= ) { + error_report("Could not load dtb '%s'", machine->dtb); + exit(1); + } + } else { + fdt =3D pnv_dt_create(machine); + + /* Pack resulting tree */ + _FDT((fdt_pack(fdt))); + } =20 qemu_fdt_dumpdtb(fdt, fdt_totalsize(fdt)); cpu_physical_memory_write(PNV_FDT_ADDR, fdt, fdt_totalsize(fdt)); @@ -952,6 +963,14 @@ static void pnv_init(MachineState *machine) g_free(sz); exit(EXIT_FAILURE); } + + /* checks for invalid option combinations */ + if (machine->dtb && (strlen(machine->kernel_cmdline) !=3D 0)) { + error_report("-append and -dtb cannot be used together, as passed" + " command line is ignored in case of custom dtb"); + exit(EXIT_FAILURE); + } + memory_region_add_subregion(get_system_memory(), 0, machine->ram); =20 /* --=20 2.45.2