From nobody Sat Feb 7 05:49:27 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.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; Authentication-Results: mx.zohomail.com; spf=pass (zoho.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=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1563192905; cv=none; d=zoho.com; s=zohoarc; b=odCG9bxaSWb2AQFF5fPuDFAy9poiCuSPuXOZh8ocfQahPMpk6CWhSdRGs/p+79dNYXkcr/on6GdgidmyTqTIrxywigwHaudiNMTKcFqY0XBDXQHB9Qs+NZsC0Yf/uk4o7/5z43jksqW7q0kevjJZGU8utxT0p094duI0vHg0NNI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1563192905; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=et3PuEUwTn1Z/fT09ID6tWrkHtzNKphFtr5tC0Fgho4=; b=IeNV0f4pXm55LEdBW3fraAzgLC3Sc/lVUalM2yrUYqEqaG3/r18xMkt30qTX3GbWbJOEMl1IVhjtF7cEhLj/92u/GF4XgItjY0zEZ8mSB/BycCC5MqJA3JuVYvYDza+J3jQkWdFhkwkdyD1dLW2IFyUXteSPyCcNe9YAgY3IY5E= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.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 header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1563192905559807.6770767498393; Mon, 15 Jul 2019 05:15:05 -0700 (PDT) Received: from localhost ([::1]:38030 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hmzsm-0002Rw-Ca for importer@patchew.org; Mon, 15 Jul 2019 08:15:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60980) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hmzs5-0008BI-RH for qemu-devel@nongnu.org; Mon, 15 Jul 2019 08:14:22 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hmzs4-000205-53 for qemu-devel@nongnu.org; Mon, 15 Jul 2019 08:14:21 -0400 Received: from mx1.redhat.com ([209.132.183.28]:14302) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hmzs2-0001yh-0s; Mon, 15 Jul 2019 08:14:18 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4D599C049E23; Mon, 15 Jul 2019 12:14:17 +0000 (UTC) Received: from x1w.redhat.com (unknown [10.40.205.87]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 91D595C88B; Mon, 15 Jul 2019 12:14:13 +0000 (UTC) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org, "Dr . David Alan Gilbert" Date: Mon, 15 Jul 2019 14:13:37 +0200 Message-Id: <20190715121338.20600-5-philmd@redhat.com> In-Reply-To: <20190715121338.20600-1-philmd@redhat.com> References: <20190715121338.20600-1-philmd@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Mon, 15 Jul 2019 12:14:17 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v5 4/5] hw/block/pflash_cfi01: Start state machine as READY to accept commands X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Peter Maydell , qemu-block@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Laszlo Ersek , Max Reitz , Alistair Francis , John Snow Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" When the state machine is ready to accept command, the bit 7 of the status register (SR) is set to 1. The guest polls the status register and check this bit before writting command to the internal 'Write State Machine' (WSM). Set SR.7 bit to 1 when the device is created. There is no migration impact by this change. Reference: Read Array Flowchart "Common Flash Interface (CFI) and Command Sets" (Intel Application Note 646) Appendix B "Basic Command Set" Reviewed-by: John Snow Reviewed-by: Alistair Francis Regression-tested-by: Laszlo Ersek Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- v3: Added migration comment. --- hw/block/pflash_cfi01.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c index 6c3fefcd2d..aa2126f6dc 100644 --- a/hw/block/pflash_cfi01.c +++ b/hw/block/pflash_cfi01.c @@ -796,7 +796,7 @@ static void pflash_cfi01_realize(DeviceState *dev, Erro= r **errp) } =20 pflash_mode_read_array(pfl); - pfl->status =3D 0; + pfl->status =3D 0x80; /* WSM ready */ /* Hardcoded CFI table */ /* Standard "QRY" string */ pfl->cfi_table[0x10] =3D 'Q'; --=20 2.20.1