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Iglesias" , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Alistair Francis , "Frederic Konrad" , Sai Pavan Boddu Subject: [PATCH 46/48] docs/system/arm/xlnx-versal-virt: add a note about dumpdtb Date: Wed, 16 Jul 2025 11:54:28 +0200 Message-ID: <20250716095432.81923-47-luc.michel@amd.com> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250716095432.81923-1-luc.michel@amd.com> References: <20250716095432.81923-1-luc.michel@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: None (SATLEXMB05.amd.com: luc.michel@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ5PEPF00000208:EE_|SN7PR12MB8436:EE_ X-MS-Office365-Filtering-Correlation-Id: b870c96e-0e7b-4a37-88df-08ddc44f0b60 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|82310400026|36860700013|1800799024|376014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?SH89QcgKNFp+PPp/jJX+YFqJjhHTsDPCwKcwETOlB22fw+BnehHTdq4oYzgs?= =?us-ascii?Q?piYy5cX1dtKzN2c8TtV/NdPY4FvaHVMfmi/a6WOHQZWi+CEWPt0Rn9D5pW65?= =?us-ascii?Q?sx61vz0bG2yNE93MBfddehu4i7rvYq+ZDBtzlh6gKFxpF/GZEkaVzIir/qWZ?= =?us-ascii?Q?McsLOi/ro5NYndFTBwhCTOqtlHuN4+0U0Gjh4iIr77a2Rzcs9HXwJuu+equr?= =?us-ascii?Q?7RpvsyrmcVCRFkUq1BX6obBaBRCZsClgRF898yuUxayvFxejflOYttxKzJRm?= =?us-ascii?Q?CmsW2I0tz1Y0JkG4hsr15w8Fsz+HIahpTIWUaQH8qgB2hfWDxWL08ooHqrWK?= =?us-ascii?Q?uejLwW2F+QWvzN+LCz0LS2NhODj4YO+I3b73GBqqXQpirXxZNvP4CaxsgDt0?= =?us-ascii?Q?xIYzKurmFKS8ZT7LiOxuT+3KHION5aZ1iexgrmI5x8GRwxhBo++oL6diugNC?= =?us-ascii?Q?9D8qgyM0P7VLKiydwMEYNBXFksEaO5WDwWLMp4eUlVOa7x5dgpCmi3hZ6tlh?= =?us-ascii?Q?PDbPESdh5x6fcTMgylwGBNWUczPn9i/tEizLC3ArBWC54jUnC4gETRGceOAs?= =?us-ascii?Q?elYTc0mJABCr6OWEp/y68j4RhY0/8L72+xJXa0U+kQi8pjwldC1GOCgY/nO9?= =?us-ascii?Q?z15SgZ5z6Sw4LOQJBjb00g8IODtEHN6EOcFsVC1tnjDK9G8dxrTBRui8WByS?= =?us-ascii?Q?HEqX51oEBeI+0FL1sdadAXEifpx1iIs3/T/SBrtu6WFm9qDMdGK60BavBjCM?= =?us-ascii?Q?OveheISWhzwVrHwjsC9GxcT42HC7rlYjjLXcuII/5o/3jywjn8MZu60S1Dkv?= =?us-ascii?Q?LfSk3Fpbxn931jewoFjOpu0AVzVPoezVtMxYih0ei6ucqwEDOI9kPmqmXFBa?= =?us-ascii?Q?hWkXSWoMYQsJJ6D/m0ULXA4EDSNTmDkDgPt9vb4NWa/aDbtLgVWmd5r0sFLU?= =?us-ascii?Q?h1zcdy8QZsVMWY01MhQHDUCMV81nV0c4x9LTxaeuWSdbirz4HXpz7CC2/BKq?= =?us-ascii?Q?VYJ6OSR7sJBGIhndBsTWt3GP43uJR1is/Ye+J7rtDRJLIK/gDSIECwBv36WK?= =?us-ascii?Q?rZ4XkBF1bES7shlng5UprjdW+AvxpfBAZVivEcuG5dvaQZePS7Pc7g6qDn14?= =?us-ascii?Q?Pax4S7o00w+VaivMaqC2Nsh5uqsJZZANu8UoducAz/JZC5+UEp3yf6SZ8UA4?= =?us-ascii?Q?6/zyyaSrqFEn9Bo0xFRz20RSPV7ePvrq4N1+Kc1DGRX1M5w4sxHPOWFHvy3m?= =?us-ascii?Q?zejOg7NtgjCsls/fteBsx1fuAiA0UNNhFBwuLCxbcfBN1aWB08EE18VNYuyy?= =?us-ascii?Q?FIhV+gRimrxuA40rxTYn92oIIxbWAXoOzbeyBxPUq59cWEF6ANNsfMYOqup7?= =?us-ascii?Q?XprhNyAOg0/1ijK7bzH7zc45Z6jAB00hL73XTs1GgvZwdPM5FltjRqO4tzDG?= =?us-ascii?Q?alrHY4W6A+3T9hn6py+WEy+esjNpYRzh0h8unN/scLfgxaitfzhMFsF4nFjj?= =?us-ascii?Q?d1E9ZY5vkQO8qBgjK++e8qfO0InMScgFytTv?= 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)(82310400026)(36860700013)(1800799024)(376014); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jul 2025 09:56:32.7465 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b870c96e-0e7b-4a37-88df-08ddc44f0b60 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: SJ5PEPF00000208.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB8436 Received-SPF: permerror client-ip=2a01:111:f403:2406::612; envelope-from=Luc.Michel@amd.com; helo=NAM02-SN1-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: 1752660795068116600 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 2.50.0