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Iglesias" , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Alistair Francis , "Frederic Konrad" , Sai Pavan Boddu Subject: [PATCH v2 45/47] docs/system/arm/xlnx-versal-virt: add a note about dumpdtb Date: Wed, 20 Aug 2025 10:25:44 +0200 Message-ID: <20250820082549.69724-46-luc.michel@amd.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250820082549.69724-1-luc.michel@amd.com> References: <20250820082549.69724-1-luc.michel@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000075EF:EE_|MN2PR12MB4093:EE_ X-MS-Office365-Filtering-Correlation-Id: 087d1ef6-a53e-41e4-ce2a-08dddfc36c0a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|36860700013|1800799024|376014|82310400026; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?OhmrItO5y10cOrdcOlHf6Ya0dmYBLNMp4TpwuK62v1sXVsrwAB2IKJIfhCF9?= =?us-ascii?Q?jeLrls/w30+cbupXXJsTmI81idUDYTWthRpj/yi3gCrjSOykxch9+1lG8hh0?= =?us-ascii?Q?V4kLcpYqCV4HnnbkBEmKS1KRmVrFOchtoKGNAOAUuDfLYAwtvyQlpEgPjUUe?= =?us-ascii?Q?W2MAN7veDqENnZ7pEZSAcuI2VC/Iap9gekMwHxMMCnqnoUTGRP2M1F265NIN?= =?us-ascii?Q?TcvZHsvgN8usvLx1PHFrP45SHKHImuQc+HMLzGGhdbfd5dbYzLO61g/4lIEM?= =?us-ascii?Q?kyn2IXJMj4VBN51jEt1spi4E0sk7vF/oymwmy61x9yzIvR3HmrrrFZsyhjgK?= =?us-ascii?Q?0g1o5pWaspIh7QXaEs92B/cySDkxgqCicGPyYxv5O0HQe2IGhGZQRPRsu6Up?= =?us-ascii?Q?D8nwJWm9Y8N7dp/33Opo5rGcV0Ok73eBJndGfM9HLZqyofOAk+rnMmJ0vvA9?= =?us-ascii?Q?GBdnvoE0lqFO7iclwgUjgD8ksLodJv7kR6urXNhZ008Lfi8kijStRASjIyJw?= =?us-ascii?Q?VoZGZ3VA8dvH7EsTKbdncdPd+xfat4mSmwuo9W1HxBsJzjuVgMAFAPmYyZOb?= =?us-ascii?Q?JKoaitbCTCFYFTwdMsfWWIWdvhZJBwy5HV7XwOP0rkWf95VkPPwJwA4qU/ez?= =?us-ascii?Q?RorQ+BYdJDfP+IZFvqaDR5R9M8D+FvrpMxwo4gjY5nhyo4/8Bewu5XlnjUEr?= =?us-ascii?Q?6D08AMwne3xjOWkWVhZEsmrqvP/t234FZp0be5m0UwGlkTNXU0+NmfhiIgIy?= =?us-ascii?Q?gfP2kaFINt6sQn0+5zhL5ZZXPah0fD3IGc+NUvMIoVmLlYjqwioBqPWzJ5/g?= =?us-ascii?Q?IKVcWgHzwCEjNF3Pa7ma6KdRkh28jXg5a/VN7S5BtUOFdf2a9TSOv4Pkf/gc?= =?us-ascii?Q?mvwF0JK43XK7HUHT3TJtzGLVeQ6n2hnUxqo4SmkwC51uk3Zju4v4jILdDBvJ?= =?us-ascii?Q?Sr2iAHFQwhOrI+NgXtxIRtOYrXgWldSgESpFlIzXgc6EJNJMaLwAHDOw9rks?= =?us-ascii?Q?ZS7wIzGXv2ENt9iZPcGL80TIyywsDflKdZAgcq28KcFeOjETiBuDPq80JeDd?= =?us-ascii?Q?mfhsaLckWMW1j3Hcr611FZPOUvEVw9pC8hHuDqP9cxKdpd+VvrHQ6ymgbbhL?= =?us-ascii?Q?0Ms9Y1VSgWFOmTe4t17Nh1ZNx31JI6MQNclKtDtz3feeoj0cdXLou3P7XD09?= =?us-ascii?Q?m6vlx98r3mYonBxzEDCMvf5JNsmVUcl3IbRsuuo9zOkAy7JGQsVfPHy+wy46?= =?us-ascii?Q?rSwndYa915CffBGo7tPno7laONWDupHD+IhnUcgSoGGZ/lEde5Hx9S9jrv3w?= =?us-ascii?Q?wc4uwF82TFOgT8rH2bryuWKlT2QG5PoG+jhKhdrEoibeWAjNj+wYvY+9qOCg?= =?us-ascii?Q?upt4UZ5xIpFKQDK0r8tEGR2xsKa7s01/OEinEPnUko0vn2lTXzlaf9fZO65A?= =?us-ascii?Q?AKEhYP1BTGO12+2jKtvY+vuC4ZOCOBFmDolRbglhcoeo/I+HKNhQ6UTY+gq3?= =?us-ascii?Q?T/PJQ2Vhcg8xtgz9DjBoqEypWnviAeBJUHHG?= X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB03.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230040)(36860700013)(1800799024)(376014)(82310400026); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Aug 2025 08:27:37.9399 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 087d1ef6-a53e-41e4-ce2a-08dddfc36c0a X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1PEPF000075EF.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4093 Received-SPF: permerror client-ip=2a01:111:f403:200a::60b; envelope-from=Luc.Michel@amd.com; helo=NAM12-MW2-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-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 @amd.com) X-ZM-MESSAGEID: 1755679138877116600 Content-Type: text/plain; charset="utf-8" Add a note in the DTB section explaining how to dump the generated DTB using the dumpdtb machine option. Signed-off-by: Luc Michel Reviewed-by: Francisco Iglesias --- docs/system/arm/xlnx-versal-virt.rst | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/docs/system/arm/xlnx-versal-virt.rst b/docs/system/arm/xlnx-ve= rsal-virt.rst index 94c8bacf61a..5d7fa18592b 100644 --- a/docs/system/arm/xlnx-versal-virt.rst +++ b/docs/system/arm/xlnx-versal-virt.rst @@ -63,11 +63,17 @@ Users can load firmware or boot-loaders with the ``-dev= ice loader`` options. =20 When loading an OS, QEMU generates a DTB and selects an appropriate address where it gets loaded. This DTB will be passed to the kernel in register x0. =20 If there's no ``-kernel`` option, we generate a DTB and place it at 0x1000 -for boot-loaders or firmware to pick it up. +for boot-loaders or firmware to pick it up. To dump and observe the genera= ted +DTB, one can use the ``dumpdtb`` machine option: + +.. code-block:: bash + + $ qemu-system-aarch64 -M amd-versal-virt,dumpdtb=3Dexample.dtb -m 2G + =20 If users want to provide their own DTB, they can use the ``-dtb`` option. These DTBs will have their memory nodes modified to match QEMU's selected ram_size option before they get passed to the kernel or FW. =20 --=20 2.50.1