From patchwork Sat Mar 5 15:55:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Cave-Ayland X-Patchwork-Id: 1601590 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4K9q8h55GWz9sG9 for ; Sun, 6 Mar 2022 02:56:36 +1100 (AEDT) Received: from localhost ([::1]:50654 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nQWlm-0004Cb-Iz for incoming@patchwork.ozlabs.org; Sat, 05 Mar 2022 10:56:34 -0500 Received: from eggs.gnu.org ([209.51.188.92]:43860) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nQWlK-00046j-NW for qemu-devel@nongnu.org; Sat, 05 Mar 2022 10:56:06 -0500 Received: from [2001:41c9:1:41f::167] (port=59276 helo=mail.default.ilande.bv.iomart.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nQWlJ-0003h6-6Z for qemu-devel@nongnu.org; Sat, 05 Mar 2022 10:56:06 -0500 Received: from [2a00:23c4:8ba0:ca00:d4eb:dbd5:5a41:aefe] (helo=kentang.home) by mail.default.ilande.bv.iomart.io with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nQWkb-0008cY-O8; Sat, 05 Mar 2022 15:55:25 +0000 From: Mark Cave-Ayland To: laurent@vivier.eu, pbonzini@redhat.com, fam@euphon.net, qemu-devel@nongnu.org Date: Sat, 5 Mar 2022 15:55:25 +0000 Message-Id: <20220305155530.9265-6-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220305155530.9265-1-mark.cave-ayland@ilande.co.uk> References: <20220305155530.9265-1-mark.cave-ayland@ilande.co.uk> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a00:23c4:8ba0:ca00:d4eb:dbd5:5a41:aefe X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk Subject: [PATCH v3 05/10] macfb: set initial value of mode control registers in macfb_common_realize() X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on mail.default.ilande.bv.iomart.io) X-Host-Lookup-Failed: Reverse DNS lookup failed for 2001:41c9:1:41f::167 (failed) Received-SPF: pass client-ip=2001:41c9:1:41f::167; envelope-from=mark.cave-ayland@ilande.co.uk; helo=mail.default.ilande.bv.iomart.io X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" If booting Linux directly in the q800 machine using -kernel rather than using a MacOS toolbox ROM, the mode control registers are never initialised, causing macfb_mode_write() to fail to determine the current resolution after migration. Resolve this by always setting the initial values of the mode control registers based upon the initial macfb properties during realize. Signed-off-by: Mark Cave-Ayland Reviewed-by: Peter Maydell Reviewed-by: Laurent Vivier --- hw/display/macfb.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/hw/display/macfb.c b/hw/display/macfb.c index 7371986480..2f8e016566 100644 --- a/hw/display/macfb.c +++ b/hw/display/macfb.c @@ -655,6 +655,14 @@ static bool macfb_common_realize(DeviceState *dev, MacfbState *s, Error **errp) return false; } + /* + * Set mode control registers to match the mode found above so that + * macfb_mode_write() does the right thing if no MacOS toolbox ROM + * is present to initialise them + */ + s->regs[DAFB_MODE_CTRL1 >> 2] = s->mode->mode_ctrl1; + s->regs[DAFB_MODE_CTRL2 >> 2] = s->mode->mode_ctrl2; + s->con = graphic_console_init(dev, 0, &macfb_ops, s); surface = qemu_console_surface(s->con);