{"id":2198211,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2198211/?format=json","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.0/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260219144901.3317747-1-ruslichenko.r@gmail.com>","date":"2026-02-19T14:48:47","name":"[v2,19/33] hw/core/machine: add '-hw-dtb' option for machine","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"ab3e1d3b8aadf1ec4611212feef3f04cb29c1638","submitter":{"id":92275,"url":"http://patchwork.ozlabs.org/api/1.0/people/92275/?format=json","name":"Ruslan Ruslichenko","email":"ruslichenko.r@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260219144901.3317747-1-ruslichenko.r@gmail.com/mbox/","series":[{"id":492690,"url":"http://patchwork.ozlabs.org/api/1.0/series/492690/?format=json","date":"2026-02-19T14:33:04","name":"hw/arm: Introduce generic FDT-driven machine","version":2,"mbox":"http://patchwork.ozlabs.org/series/492690/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2198211/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20230601 header.b=e+/6+Jso;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fGxCL69qwz1xpl\n\tfor ; Fri, 20 Feb 2026 01:51:09 +1100 (AEDT)","from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from )\n\tid 1vt5MH-0003zp-9p; Thu, 19 Feb 2026 09:50:25 -0500","from eggs.gnu.org ([2001:470:142:3::10])\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from )\n id 1vt5Lp-0003k5-LV\n for qemu-devel@nongnu.org; Thu, 19 Feb 2026 09:50:06 -0500","from mail-wr1-x431.google.com ([2a00:1450:4864:20::431])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)\n (Exim 4.90_1) (envelope-from )\n id 1vt5Lc-00082S-HA\n for qemu-devel@nongnu.org; Thu, 19 Feb 2026 09:49:54 -0500","by mail-wr1-x431.google.com with SMTP id\n ffacd0b85a97d-43591b55727so1037476f8f.3\n for ; Thu, 19 Feb 2026 06:49:41 -0800 (PST)","from thinkpad-t470s.. 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Iglesias\" ,\n Ruslan_Ruslichenko@epam.com, balaton@eik.bme.hu, philmd@linaro.org,\n wangyanan55@huawei.com, zhao1.liu@intel.com, pbonzini@redhat.com","Subject":"[PATCH v2 19/33] hw/core/machine: add '-hw-dtb' option for machine","Date":"Thu, 19 Feb 2026 15:48:47 +0100","Message-ID":"<20260219144901.3317747-1-ruslichenko.r@gmail.com>","X-Mailer":"git-send-email 2.43.0","In-Reply-To":"<20260219143332.3316679-1-ruslichenko.r@gmail.com>","References":"<20260219143332.3316679-1-ruslichenko.r@gmail.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Received-SPF":"pass client-ip=2a00:1450:4864:20::431;\n envelope-from=ruslichenko.r@gmail.com; helo=mail-wr1-x431.google.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, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no","X-Spam_action":"no action","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"From: Ruslan Ruslichenko \n\nAdd new '-hw-dtb' command-line option and corresponding\nMachineState property.\nThe 'hw-dtb' option allows to specify a Device tree\nbinary with hardware description which Qemu should\nemulate.\n\nSigned-off-by: Ruslan Ruslichenko \n---\n hw/core/machine.c | 19 +++++++++++++++++++\n include/hw/core/boards.h | 1 +\n qemu-options.hx | 9 +++++++++\n system/vl.c | 3 +++\n 4 files changed, 32 insertions(+)","diff":"diff --git a/hw/core/machine.c b/hw/core/machine.c\nindex d4ef620c17..affd24cd49 100644\n--- a/hw/core/machine.c\n+++ b/hw/core/machine.c\n@@ -363,6 +363,20 @@ static void machine_set_dtb(Object *obj, const char *value, Error **errp)\n ms->dtb = g_strdup(value);\n }\n \n+static char *machine_get_hw_dtb(Object *obj, Error **errp)\n+{\n+ MachineState *ms = MACHINE(obj);\n+\n+ return g_strdup(ms->hw_dtb);\n+}\n+\n+static void machine_set_hw_dtb(Object *obj, const char *value, Error **errp)\n+{\n+ MachineState *ms = MACHINE(obj);\n+\n+ ms->hw_dtb = g_strdup(value);\n+}\n+\n static char *machine_get_dumpdtb(Object *obj, Error **errp)\n {\n MachineState *ms = MACHINE(obj);\n@@ -1145,6 +1159,11 @@ static void machine_class_init(ObjectClass *oc, const void *data)\n object_class_property_set_description(oc, \"dtb\",\n \"Linux kernel device tree file\");\n \n+ object_class_property_add_str(oc, \"hw-dtb\",\n+ machine_get_hw_dtb, machine_set_hw_dtb);\n+ object_class_property_set_description(oc, \"hw-dtb\",\n+ \"A device tree binary used to describe the hardware to QEMU\");\n+\n object_class_property_add_str(oc, \"dumpdtb\",\n machine_get_dumpdtb, machine_set_dumpdtb);\n object_class_property_set_description(oc, \"dumpdtb\",\ndiff --git a/include/hw/core/boards.h b/include/hw/core/boards.h\nindex edbe8d03e5..722b79b5e4 100644\n--- a/include/hw/core/boards.h\n+++ b/include/hw/core/boards.h\n@@ -403,6 +403,7 @@ struct MachineState {\n \n void *fdt;\n char *dtb;\n+ char *hw_dtb;\n char *dumpdtb;\n int phandle_start;\n char *dt_compatible;\ndiff --git a/qemu-options.hx b/qemu-options.hx\nindex 33fcfe7ce6..1568f3ce4c 100644\n--- a/qemu-options.hx\n+++ b/qemu-options.hx\n@@ -4518,6 +4518,15 @@ SRST(initrd)\n \n ERST\n \n+DEF(\"hw-dtb\", HAS_ARG, QEMU_OPTION_hw_dtb, \\\n+ \"-hw-dtb file use 'file' as device tree image\\n\", QEMU_ARCH_ALL)\n+SRST\n+``-hw-dtb file``\n+ Use as a device tree binary (dtb) image used to create the\n+ emulated machine. This dtb will not be passed to the kernel, use -dtb\n+ for that.\n+ERST\n+\n DEF(\"dtb\", HAS_ARG, QEMU_OPTION_dtb, \\\n \"-dtb file use 'file' as device tree image\\n\", QEMU_ARCH_ALL)\n SRST\ndiff --git a/system/vl.c b/system/vl.c\nindex aa9a155041..c890da586c 100644\n--- a/system/vl.c\n+++ b/system/vl.c\n@@ -3020,6 +3020,9 @@ void qemu_init(int argc, char **argv)\n case QEMU_OPTION_dtb:\n qdict_put_str(machine_opts_dict, \"dtb\", optarg);\n break;\n+ case QEMU_OPTION_hw_dtb:\n+ qdict_put_str(machine_opts_dict, \"hw-dtb\", optarg);\n+ break;\n case QEMU_OPTION_cdrom:\n drive_add(IF_DEFAULT, 2, optarg, CDROM_OPTS);\n break;\n","prefixes":["v2","19/33"]}