{"id":2198192,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2198192/?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":"<20260219143332.3316679-6-ruslichenko.r@gmail.com>","date":"2026-02-19T14:33:04","name":"[v2,05/33] hw/core/fdt_generic: implement FDT machine creation helpers","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"d7e7e14ce647012fb3c40cb985da282f7d9979dc","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/20260219143332.3316679-6-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/2198192/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=VKybzSFb;\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 4fGwsN4yhBz1xpl\n\tfor ; Fri, 20 Feb 2026 01:35:36 +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 1vt57B-000055-5O; Thu, 19 Feb 2026 09:34:49 -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 1vt579-0008VH-NT\n for qemu-devel@nongnu.org; Thu, 19 Feb 2026 09:34:47 -0500","from mail-wm1-x341.google.com ([2a00:1450:4864:20::341])\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 1vt577-0002wn-H3\n for qemu-devel@nongnu.org; Thu, 19 Feb 2026 09:34:47 -0500","by mail-wm1-x341.google.com with SMTP id\n 5b1f17b1804b1-483770e0b25so10837325e9.0\n for ; Thu, 19 Feb 2026 06:34:45 -0800 (PST)","from thinkpad-t470s.. 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Iglesias\" ,\n Ruslan_Ruslichenko@epam.com, balaton@eik.bme.hu","Subject":"[PATCH v2 05/33] hw/core/fdt_generic: implement FDT machine creation\n helpers","Date":"Thu, 19 Feb 2026 15:33:04 +0100","Message-ID":"<20260219143332.3316679-6-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::341;\n envelope-from=ruslichenko.r@gmail.com; helo=mail-wm1-x341.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\nThe patch adds infrastructure to parse device tree\nand associate fdt nodes and created objects.\n\nThis will be used during instantiating machine from the\ndevices tree.\n\nSigned-off-by: Ruslan Ruslichenko \n---\n hw/core/fdt_generic.c | 70 +++++++++++++++++++++++++++++++++++\n include/hw/core/fdt_generic.h | 26 ++++++++++++-\n 2 files changed, 95 insertions(+), 1 deletion(-)","diff":"diff --git a/hw/core/fdt_generic.c b/hw/core/fdt_generic.c\nindex d3ab8f9132..b3ef0b7d0a 100644\n--- a/hw/core/fdt_generic.c\n+++ b/hw/core/fdt_generic.c\n@@ -28,7 +28,10 @@\n #include \"qemu/osdep.h\"\n #include \"hw/core/fdt_generic.h\"\n #include \"hw/core/qdev-properties.h\"\n+#include \"migration/vmstate.h\"\n+#include \"qemu/coroutine.h\"\n #include \"qemu/log.h\"\n+#include \"system/reset.h\"\n \n #ifndef FDT_GENERIC_ERR_DEBUG\n #define FDT_GENERIC_ERR_DEBUG 0\n@@ -137,3 +140,70 @@ void dump_inst_bind_table(void)\n printf(\"FDT INSTANCE BINDING TABLE:\\n\");\n dump_table(inst_bind_list_head);\n }\n+\n+void fdt_init_yield(FDTMachineInfo *fdti)\n+{\n+ static int yield_index;\n+ int this_yield = yield_index++;\n+\n+ DB_PRINT(1, \"Yield #%d\\n\", this_yield);\n+ qemu_co_queue_wait(fdti->cq, NULL);\n+ DB_PRINT(1, \"Unyield #%d\\n\", this_yield);\n+}\n+\n+void fdt_init_set_opaque(FDTMachineInfo *fdti, char *node_path, void *opaque)\n+{\n+ FDTDevOpaque *dp;\n+ for (dp = fdti->dev_opaques;\n+ dp->node_path && strcmp(dp->node_path, node_path);\n+ dp++)\n+ ;\n+ if (!dp->node_path) {\n+ dp->node_path = strdup(node_path);\n+ }\n+ dp->opaque = opaque;\n+}\n+\n+int fdt_init_has_opaque(FDTMachineInfo *fdti, char *node_path)\n+{\n+ FDTDevOpaque *dp;\n+ for (dp = fdti->dev_opaques; dp->node_path; dp++) {\n+ if (!strcmp(dp->node_path, node_path)) {\n+ return 1;\n+ }\n+ }\n+ return 0;\n+}\n+\n+void *fdt_init_get_opaque(FDTMachineInfo *fdti, char *node_path)\n+{\n+ FDTDevOpaque *dp;\n+ for (dp = fdti->dev_opaques; dp->node_path; dp++) {\n+ if (!strcmp(dp->node_path, node_path)) {\n+ return dp->opaque;\n+ }\n+ }\n+ return NULL;\n+}\n+\n+FDTMachineInfo *fdt_init_new_fdti(void *fdt)\n+{\n+ FDTMachineInfo *fdti = g_malloc0(sizeof(*fdti));\n+ fdti->fdt = fdt;\n+ fdti->cq = g_malloc0(sizeof(*(fdti->cq)));\n+ qemu_co_queue_init(fdti->cq);\n+ fdti->dev_opaques = g_malloc0(sizeof(*(fdti->dev_opaques)) *\n+ (devtree_get_num_nodes(fdt) + 1));\n+ return fdti;\n+}\n+\n+void fdt_init_destroy_fdti(FDTMachineInfo *fdti)\n+{\n+ FDTDevOpaque *dp;\n+\n+ for (dp = fdti->dev_opaques; dp->node_path; dp++) {\n+ g_free(dp->node_path);\n+ }\n+ g_free(fdti->dev_opaques);\n+ g_free(fdti);\n+}\ndiff --git a/include/hw/core/fdt_generic.h b/include/hw/core/fdt_generic.h\nindex 614a234868..a21e3c2440 100644\n--- a/include/hw/core/fdt_generic.h\n+++ b/include/hw/core/fdt_generic.h\n@@ -8,9 +8,33 @@\n #define FDT_GENERIC_H\n \n #include \"qemu/help-texts.h\"\n+#include \"hw/core/irq.h\"\n #include \"system/device_tree.h\"\n+#include \"qemu/coroutine.h\"\n+\n+typedef struct FDTDevOpaque {\n+ char *node_path;\n+ void *opaque;\n+} FDTDevOpaque;\n+\n+typedef struct FDTMachineInfo {\n+ /* the fdt blob */\n+ void *fdt;\n+ /* irq descriptors for top level int controller */\n+ qemu_irq *irq_base;\n+ /* per-device specific opaques */\n+ FDTDevOpaque *dev_opaques;\n+ /* recheck coroutine queue */\n+ CoQueue *cq;\n+} FDTMachineInfo;\n \n-typedef struct FDTMachineInfo FDTMachineInfo;\n+/*\n+ * create a new FDTMachineInfo. The client is responsible for setting irq_base.\n+ * Client must call fdt_init_destroy_fdti to cleanup\n+ */\n+\n+FDTMachineInfo *fdt_init_new_fdti(void *fdt);\n+void fdt_init_destroy_fdti(FDTMachineInfo *fdti);\n \n typedef int (*FDTInitFn)(char *, FDTMachineInfo *, void *);\n \n","prefixes":["v2","05/33"]}