From nobody Sat Feb 7 07:12:08 2026 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=none dis=none) header.from=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1769449816; cv=none; d=zohomail.com; s=zohoarc; b=D85ww6AYQlzMHWbylj24mHG/u7MmEEfzGv73ViO1lJpdkWP+mUtIFsN3iApFO3gOoYvCT/89anLyWuRDdKMzyDl/Bmqvhhq9OfGpjy6XgeK+4LF3n0FuSUJWqY66oNlnYHDT4Wh9zBTJdfuPo9Gy78g+Cqma9IjEZkAJt551Xoc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1769449816; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=BlJN0+7cHw6gzdkYqCEdBJkW8sO5/Cp3u22Anlum/aE=; b=l26LcuaLn+KP+a8w/S+ZWBFcTudra/Nrjt/uHedxMbV+k9FWMNWeNxGGHiN23gPBJbZsIUZpL5d7kfebl+xKX78o+WY273By8XnAnMif2+unuFtB+FLBnfPYA1NrXlBjofmskWAUKkpqmLvrTly0CXRHld/g4VqB5mx41LVLNFA= 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=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1769449816291850.546797007233; Mon, 26 Jan 2026 09:50:16 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vkQd4-0001Ys-2A; Mon, 26 Jan 2026 12:43:58 -0500 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 1vkQcj-0001Lk-7m for qemu-devel@nongnu.org; Mon, 26 Jan 2026 12:43:40 -0500 Received: from mail-wm1-x330.google.com ([2a00:1450:4864:20::330]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1vkQcg-0008Vr-CH for qemu-devel@nongnu.org; Mon, 26 Jan 2026 12:43:36 -0500 Received: by mail-wm1-x330.google.com with SMTP id 5b1f17b1804b1-47ee0291921so40893925e9.3 for ; Mon, 26 Jan 2026 09:43:33 -0800 (PST) Received: from thinkpad-t470s.. (93-143-71-105.adsl.net.t-com.hr. [93.143.71.105]) by smtp.googlemail.com with ESMTPSA id ffacd0b85a97d-435b1e71730sm34199603f8f.26.2026.01.26.09.43.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Jan 2026 09:43:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1769449412; x=1770054212; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=BlJN0+7cHw6gzdkYqCEdBJkW8sO5/Cp3u22Anlum/aE=; b=Q0DTvAeUbjYRbljlEhRA4E+YWADBpxiA72//BNwDQv1Hjh+87pEtwO02UGTkfV7YA9 xz2Ps/awO13k3jyF5a2Wwfmp4xGuKx53CAQ1IYzpAT7OJ6ThsIttK0pVJ31c3fhFuTxI d3decElPRAcC29OQJNgXhlgVtLcLN1bcCBKvhb7HoRyaho/Q4TNMZ8m8mWJJQ+tMhrX4 jaNJ96cETZ8UQCOXv+92wXtvf6XlX3klI1IG1lxlfXfqKuhGs+qPP/rlsduNjNzaiRpv wbN3nqmQkaVjyL0UhVr6VcrDHy0lwZJ5nNiSJm8NxWoGOFuQkpjJQ3PHbkIA3xTa4C3w xNvA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1769449412; x=1770054212; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=BlJN0+7cHw6gzdkYqCEdBJkW8sO5/Cp3u22Anlum/aE=; b=ejG/K0jjC5jFLEOHeKR7NlCSOLRxQUD0Asii1MlNa3zsyQAgXZSnXzBmFOzbyKMsVY mS/YZrBDC8aVxT5t7GbvehEYou3eBnMYRfCCVtvFUJK3uyBkHfwzmHOT9s8AEeymCkFh YYs2nkwmha9RkzTemnaSiKyL1MrzidZgDaIobLaGgVk0d86uquwDoM4qkhemGsDzLruP xNr04X/pJr2sJqpdM6LyPZEte7/zdT58KAv5GK1YtHaREfRcnIaprWo5jBk06Lkc5x3z cU2XR6peTYxXvHufj6xpMZ/oP0Bq3jxYAIXjiC8TepgOUUcSiR1hgTtsf28C2VZHF8iG VelA== X-Gm-Message-State: AOJu0Yxu+YOh6uElJiNITB+f/bffXatPBJ3CESLIjRiljDRCuIAQqjLI FQNevcDUjPbch6pJONwdPaU50nvOlTGNEqmkxdYc9p8iTpp4J/JT6LwzGZNrQ2VX X-Gm-Gg: AZuq6aJN+jP2fqJ9EhQHdH64B3qIhtk7SB3N8NB/Z+7cTIK+b+l7+6VwxQ1RuWr8AP7 wII6Ep3WIi7YHCix+fpfZr2PeOXJD8A14HyUgWcSPBieu1IguO52QM+RMoXTyx+DCFOhlzi0m02 JXDUxKeM4PAU4dZQG1gAEeYnuw9TH1KxBf9ShEBWD6HGNsAymMgpWES+F6TbBgG5JJMe1dg0tz7 /OHgzHWODIk+A/zaUqeW+sl79zeDrMJH5wpsQzpI26MEovxFAjYKp3dWH1H1cfTyItQl3fpxMQP h4LU/+xJUXCOsX0vPg79UzJK0akYYRbMVVEdUEz5I1K317z7ZmFtcnUnIV2HmEwZkYCkrb4OEzS HYEYN9/LXaXhgYniTvwyXoBepyIF1Hpgz+wxng4nZn6ZP2zS2NmX9NRzLLpZnwdZ13gJCLLAVLx qNFCtK+a3eM7AtQR6h7hTYtD1xRoBENWVN7UAY5+rRqE8stX7LeZ3lXg== X-Received: by 2002:a05:600c:4f09:b0:480:4a5a:bd53 with SMTP id 5b1f17b1804b1-4805cf5f8famr77269185e9.21.1769449411982; Mon, 26 Jan 2026 09:43:31 -0800 (PST) From: Ruslan Ruslichenko To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, peter.maydell@linaro.org, artem_mygaiev@epam.com, volodymyr_babchuk@epam.com, takahiro.nakata.wr@renesas.com, "Edgar E . Iglesias" , Ruslan_Ruslichenko@epam.com Subject: [PATCH 08/27] hw/core/fdt_generic_util: implement fdt_init_qdev Date: Mon, 26 Jan 2026 18:42:54 +0100 Message-ID: <20260126174313.1418150-9-ruslichenko.r@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260126174313.1418150-1-ruslichenko.r@gmail.com> References: <20260126174313.1418150-1-ruslichenko.r@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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=2a00:1450:4864:20::330; envelope-from=ruslichenko.r@gmail.com; helo=mail-wm1-x330.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, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, 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: , 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 @gmail.com) X-ZM-MESSAGEID: 1769449817471158500 Content-Type: text/plain; charset="utf-8" From: Ruslan Ruslichenko Implement main routine to create device object from compat. The following steps implemented: - parse node compatible and device types - try to create object from compat - set correct parent based on device tree. Signed-off-by: Ruslan Ruslichenko --- hw/core/fdt_generic_util.c | 224 +++++++++++++++++++++++++++++++++++++ 1 file changed, 224 insertions(+) diff --git a/hw/core/fdt_generic_util.c b/hw/core/fdt_generic_util.c index 4338dc956b..74310e9eb3 100644 --- a/hw/core/fdt_generic_util.c +++ b/hw/core/fdt_generic_util.c @@ -40,6 +40,7 @@ #include "qemu/config-file.h" #include "hw/core/boards.h" #include "qemu/option.h" +#include "hw/cpu/cluster.h" =20 #ifndef FDT_GENERIC_UTIL_ERR_DEBUG #define FDT_GENERIC_UTIL_ERR_DEBUG 3 @@ -235,8 +236,231 @@ static int simple_bus_fdt_init(char *node_path, FDTMa= chineInfo *fdti) return 0; } =20 +/* FIXME: figure out a real solution to this */ + +#define DIGIT(a) ((a) >=3D '0' && (a) <=3D '9') +#define LOWER_CASE(a) ((a) >=3D 'a' && (a) <=3D 'z') + +static void trim_version(char *x) +{ + long result; + + for (;;) { + x =3D strchr(x, '-'); + if (!x) { + return; + } + if (DIGIT(x[1])) { + /* Try to trim Xilinx version suffix */ + const char *p; + + qemu_strtol(x + 1, &p, 0, &result); + + if (*p =3D=3D '.') { + *x =3D 0; + return; + } else if (*p =3D=3D 0) { + return; + } + } else if (x[1] =3D=3D 'r' && x[3] =3D=3D 'p') { + /* Try to trim ARM version suffix */ + if (DIGIT(x[2]) && DIGIT(x[4])) { + *x =3D 0; + return; + } + } + x++; + } +} + +static void substitute_char(char *s, char a, char b) +{ + for (;;) { + s =3D strchr(s, a); + if (!s) { + return; + } + *s =3D b; + s++; + } +} + +static inline const char *trim_vendor(const char *s) +{ + /* FIXME: be more intelligent */ + const char *ret =3D memchr(s, ',', strlen(s)); + return ret ? ret + 1 : s; +} + +static Object *fdt_create_from_compat(const char *compat, char **dev_type) +{ + Object *ret =3D NULL; + char *c =3D g_strdup(compat); + + /* Try to create the object */ + ret =3D object_new(c); + + if (!ret) { + /* Trim the version off the end and try again */ + trim_version(c); + ret =3D object_new(c); + + if (!ret) { + /* Replace commas with full stops */ + substitute_char(c, ',', '.'); + ret =3D object_new(c); + } + } + + if (!ret) { + /* + * Restart with the orginal string and now replace commas with full + * stops and try again. This means that versions are still include= d. + */ + g_free(c); + c =3D g_strdup(compat); + substitute_char(c, ',', '.'); + ret =3D object_new(c); + } + + if (dev_type) { + *dev_type =3D c; + } else { + g_free(c); + } + + if (!ret) { + const char *no_vendor =3D trim_vendor(compat); + + if (no_vendor !=3D compat) { + return fdt_create_from_compat(no_vendor, dev_type); + } + } + return ret; +} + +/* + * Error handler for device creation failure. + * + * We look for qemu-fdt-abort-on-error properties up the tree. + * If we find one, we abort with the provided error message. + */ +static void fdt_dev_error(FDTMachineInfo *fdti, char *node_path, char *com= pat) +{ + const char *abort_on_error; + const char *warn_on_error; + + warn_on_error =3D qemu_fdt_getprop(fdti->fdt, node_path, + "qemu-fdt-warn-on-error", 0, + true, NULL); + abort_on_error =3D qemu_fdt_getprop(fdti->fdt, node_path, + "qemu-fdt-abort-on-error", 0, + true, NULL); + if (warn_on_error) { + if (strncmp("device_type", compat, strlen("device_type"))) { + warn_report("%s: %s", compat, warn_on_error); + } + } + + if (abort_on_error) { + error_report("Failed to create %s", compat); + error_setg(&error_fatal, "%s", abort_on_error); + } +} + static int fdt_init_qdev(char *node_path, FDTMachineInfo *fdti, char *comp= at) { + Object *dev, *parent; + char *dev_type =3D NULL; + char parent_node_path[DT_PATH_LENGTH]; + + if (!compat) { + return 1; + } + dev =3D fdt_create_from_compat(compat, &dev_type); + if (!dev) { + DB_PRINT_NP(1, "no match found for %s\n", compat); + fdt_dev_error(fdti, node_path, compat); + return 1; + } + DB_PRINT_NP(1, "matched compat %s\n", compat); + + /* Do this super early so fdt_generic_num_cpus is correct ASAP */ + if (object_dynamic_cast(dev, TYPE_CPU)) { + fdt_generic_num_cpus++; + DB_PRINT_NP(0, "is a CPU - total so far %d\n", fdt_generic_num_cpu= s); + } + + if (qemu_devtree_getparent(fdti->fdt, parent_node_path, node_path)) { + abort(); + } + while (!fdt_init_has_opaque(fdti, parent_node_path) && + !object_dynamic_cast(dev, TYPE_CPU)) { + fdt_init_yield(fdti); + } + + parent =3D fdt_init_get_opaque(fdti, parent_node_path); + + if (object_dynamic_cast(dev, TYPE_CPU)) { + parent =3D fdt_init_get_cpu_cluster(fdti, parent, compat); + } + + if (dev->parent) { + DB_PRINT_NP(0, "Node already parented - skipping node\n"); + } else if (parent) { + DB_PRINT_NP(1, "parenting node\n"); + object_property_add_child(OBJECT(parent), + qemu_devtree_get_node_name(fdti->fdt, node_p= ath), + OBJECT(dev)); + if (object_dynamic_cast(dev, TYPE_DEVICE)) { + Object *parent_bus =3D parent; + unsigned int depth =3D 0; + + DB_PRINT_NP(1, "bus parenting node\n"); + /* Look for an FDT ancestor that is a Bus. */ + while (parent_bus && !object_dynamic_cast(parent_bus, TYPE_BUS= )) { + /* + * Assert against insanely deep hierarchies which are an + * indication of loops. + */ + assert(depth < 4096); + + parent_bus =3D parent_bus->parent; + depth++; + } + + if (!parent_bus + && object_dynamic_cast(OBJECT(dev), TYPE_SYS_BUS_DEVICE)) { + /* + * Didn't find any bus. Use the default sysbus one. + * This allows ad-hoc busses belonging to sysbus devices t= o be + * visible to -device bus=3Dx. + */ + parent_bus =3D OBJECT(sysbus_get_default()); + } + + if (parent_bus) { + qdev_set_parent_bus(DEVICE(dev), BUS(parent_bus), + &error_abort); + } + } + } else { + DB_PRINT_NP(1, "orphaning node\n"); + if (object_dynamic_cast(OBJECT(dev), TYPE_SYS_BUS_DEVICE)) { + qdev_set_parent_bus(DEVICE(dev), BUS(sysbus_get_default()), + &error_abort); + } + + /* FIXME: Make this go away (centrally) */ + object_property_add_child( + object_get_root(), + qemu_devtree_get_node_name(fdti->fdt, node_p= ath), + OBJECT(dev)); + } + fdt_init_set_opaque(fdti, node_path, dev); + + g_free(dev_type); + return 0; } =20 --=20 2.43.0