From nobody Tue Feb 10 20:50:17 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; 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=fail(p=none dis=none) header.from=ilande.co.uk Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1696408804876348.54304587518914; Wed, 4 Oct 2023 01:40:04 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qnxQB-0007Kf-KR; Wed, 04 Oct 2023 04:39:55 -0400 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 1qnxPx-0006q0-5u for qemu-devel@nongnu.org; Wed, 04 Oct 2023 04:39:42 -0400 Received: from mail.ilande.co.uk ([2001:41c9:1:41f::167]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qnxPr-0007kw-62 for qemu-devel@nongnu.org; Wed, 04 Oct 2023 04:39:39 -0400 Received: from host86-159-123-68.range86-159.btcentralplus.com ([86.159.123.68] helo=localhost.localdomain) by mail.ilande.co.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qnxPR-0006za-VT; Wed, 04 Oct 2023 09:39:14 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=ilande.co.uk; s=20220518; h=Subject:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-Id:Date:To:From:Sender:Reply-To:Cc: Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=vIBVr7O9C9b85FSdLczRJGzm8rZtijmZ/GEQoWrr164=; b=x2rH3DuDkX2fNihGLbU9SYXaMh cnr5uBRlvkSIfwZoXEbH8sK0KBOaIHExs+bc6MeXrNeXCPtwBu0D+U7DjDNGndZ37EVhudUTArMFs TiQiRrYsWAyqZ9K0d6KHDtKv/nA1yGO1G0ZxMQ+gsgvSj5WrjhikmPy36OnD6NpVDQU7d5Sb0c6sg YyIA1D3kNDkibkJPZIzTlrkDyKKHQCSZExgbo74nKH8t4L2DBuAGWg6L8Q8KaHsefrreRZkOZXyw/ ISCQFNSoEwKsNPQi0uGiufhKZMgKoUOyjmfiVayp1lmkup4vfMXiLbYdxvC4ybyseM+AjMqPlMz9r Z316hzh1pbvBEE7WeBlPabyVRw8f1ELAm7TCvhBffsbbhgI1laXLrXJJ/Iqj8dHYs9wUFXS53z+TF Y/bXJRJyanBvDeDzJ+zYL/ISifKdhUrZMKjcrjYq8H8ZMt4wkOxf+nJqeTMlbqb3hYPhPlEjsxlKW Vy8J5LvqUJNuKc52ZcVDvbIPgf39O+zGzfCRSXGWvla97zc1cRqN10Dwu8pYtKcF3EwzL5wCF/nss 8raSBIPL99hK2fySlptufKdc6teuHOO5JcVuEuHhAOu1uMdDBCQbKh18lqcOET9ZibDwq1SZDOeDg EXUmSOajiSBi2aZ9s11VmpsL6n9JkeR6jWD0rOaTA=; From: Mark Cave-Ayland To: laurent@vivier.eu, qemu-devel@nongnu.org Date: Wed, 4 Oct 2023 09:38:04 +0100 Message-Id: <20231004083806.757242-19-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231004083806.757242-1-mark.cave-ayland@ilande.co.uk> References: <20231004083806.757242-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SA-Exim-Connect-IP: 86.159.123.68 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH v4 18/20] q800: add ESCC alias at 0xc000 X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.ilande.co.uk) 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=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.ilande.co.uk 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, SPF_HELO_NONE=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: fail (Header signature does not verify) X-ZM-MESSAGEID: 1696408806885100010 Content-Type: text/plain; charset="utf-8" Tests on real Q800 hardware show that the ESCC is addressable at multiple l= ocations within the ESCC memory region - at least 0xc000, 0xc020 (as expected by the= MacOS toolbox ROM) and 0xc040. All released NetBSD kernels before 10 use the 0xc000 address which causes a= fatal error when running the MacOS booter. Add a single memory region alias at 0x= c000 to enable NetBSD kernels to start booting under QEMU. Signed-off-by: Mark Cave-Ayland Reviewed-by: Laurent Vivier --- hw/m68k/q800.c | 6 ++++++ include/hw/m68k/q800.h | 1 + 2 files changed, 7 insertions(+) diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c index ac3115d328..27a0b3c08a 100644 --- a/hw/m68k/q800.c +++ b/hw/m68k/q800.c @@ -451,6 +451,12 @@ static void q800_machine_init(MachineState *machine) memory_region_add_subregion(&m->macio, SCC_BASE - IO_BASE, sysbus_mmio_get_region(sysbus, 0)); =20 + /* Create alias for NetBSD */ + memory_region_init_alias(&m->escc_alias, OBJECT(machine), "escc-alias", + sysbus_mmio_get_region(sysbus, 0), 0, 0x8); + memory_region_add_subregion(&m->macio, SCC_BASE - IO_BASE - 0x20, + &m->escc_alias); + /* SCSI */ =20 object_initialize_child(OBJECT(machine), "esp", &m->esp, diff --git a/include/hw/m68k/q800.h b/include/hw/m68k/q800.h index fbaacd88bd..348eaf4703 100644 --- a/include/hw/m68k/q800.h +++ b/include/hw/m68k/q800.h @@ -67,6 +67,7 @@ struct Q800MachineState { MemoryRegion macio; MemoryRegion macio_alias; MemoryRegion machine_id; + MemoryRegion escc_alias; }; =20 #define TYPE_Q800_MACHINE MACHINE_TYPE_NAME("q800") --=20 2.39.2