From nobody Sun Feb 8 16:36:04 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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1550495244725863.3316703429232; Mon, 18 Feb 2019 05:07:24 -0800 (PST) Received: from localhost ([127.0.0.1]:57984 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gvidl-0007eD-MI for importer@patchew.org; Mon, 18 Feb 2019 08:07:21 -0500 Received: from eggs.gnu.org ([209.51.188.92]:44392) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gviTN-00085s-F5 for qemu-devel@nongnu.org; Mon, 18 Feb 2019 07:56:38 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gviTM-0000mi-8r for qemu-devel@nongnu.org; Mon, 18 Feb 2019 07:56:37 -0500 Received: from mx1.redhat.com ([209.132.183.28]:45306) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gviTJ-0000W1-6p; Mon, 18 Feb 2019 07:56:33 -0500 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 89BE13C2CF7; Mon, 18 Feb 2019 12:56:18 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-92.ams2.redhat.com [10.36.116.92]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 520D560CD0; Mon, 18 Feb 2019 12:56:18 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 640081133056; Mon, 18 Feb 2019 13:56:15 +0100 (CET) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Mon, 18 Feb 2019 13:56:11 +0100 Message-Id: <20190218125615.18970-7-armbru@redhat.com> In-Reply-To: <20190218125615.18970-1-armbru@redhat.com> References: <20190218125615.18970-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Mon, 18 Feb 2019 12:56:18 +0000 (UTC) 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 06/10] r2d: Flash memory creation is confused about size, mark FIXME X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, qemu-block@nongnu.org, alex.bennee@linaro.org, Magnus Damm , mreitz@redhat.com, qemu-ppc@nongnu.org, lersek@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" pflash_cfi02_register() takes a size in bytes, a block size in bytes and a number of blocks. r2d_init() passes FLASH_SIZE, 16 * KiB, FLASH_SIZE >> 16. Does not compute: size doesn't match block size * number of blocks. The latter happens to win. I tried to find documentation on the physcial hardware, no luck. For now, adjust the byte size passed to match the actual size created, and add a FIXME comment. Cc: Magnus Damm Signed-off-by: Markus Armbruster --- hw/sh4/r2d.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/hw/sh4/r2d.c b/hw/sh4/r2d.c index dcdb3728cb..ed18d1f351 100644 --- a/hw/sh4/r2d.c +++ b/hw/sh4/r2d.c @@ -290,7 +290,14 @@ static void r2d_init(MachineState *machine) =20 /* onboard flash memory */ dinfo =3D drive_get(IF_PFLASH, 0, 0); - pflash_cfi02_register(0x0, NULL, "r2d.flash", FLASH_SIZE, + /* + * FIXME The code is confused about the size of the flash. It + * used to pass FLASH_SIZE bytes, in FLASH_SIZE >> 16 blocks of + * 16KiB each, which does not compute, but creates one of + * FLASH_SIZE / 4 bytes anyway. The current code does so too, but + * whether it's the right size is anybody's guess. + */ + pflash_cfi02_register(0x0, NULL, "r2d.flash", FLASH_SIZE / 4, dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 16 * KiB, FLASH_SIZE >> 16, 1, 4, 0x0000, 0x0000, 0x0000, 0x0000, --=20 2.17.2