From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Fri, 19 May 2023 08:54:45 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1pzu0k-006OSs-HS for lore@lore.pengutronix.de; Fri, 19 May 2023 08:54:45 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pzu0i-0005UQ-A3 for lore@pengutronix.de; Fri, 19 May 2023 08:54:44 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=klopZo7kiGPHpGNUc3T1DuC2idt31BhsjV5dWUc/nog=; b=WIc781yn1y4JZUC7obeo93hqDX P2fY8hhsHV4nNkOxBntel3vuYVtVvAMKTgsvZD+BzUHGEwCaPnP0UBX+8LXQ87EK2nl3Alf5QIPBm ONSMkJ2GoOi7pKRC6H6vrJikbOHw+ZAyroVa0lad4lER4wgXI1dnegM8ySc5Dq2+QoWVqt6rN3ngM SP7BpujBVEpTxjlRB79M+9I8OYY3c2nCzyFtlaZQRLsCoiTjoKJzi57QulAQHRTSzytus7EDi778n Pdp5UkBn3ZnWbxVgivAljDxjzY9fgnEGExfh090pCZukFvZ+iHVqN0FWp5/Pz6udWmAfel2gbAfG1 Io6PwsDQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pztze-00FIxY-2r; Fri, 19 May 2023 06:53:38 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pztzc-00FIx2-1f for barebox@lists.infradead.org; Fri, 19 May 2023 06:53:37 +0000 Received: from ptz.office.stw.pengutronix.de ([2a0a:edc0:0:900:1d::77] helo=[127.0.0.1]) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1pztzb-0005RT-8E; Fri, 19 May 2023 08:53:35 +0200 Message-ID: <8d824d8d-91d2-e0dc-ddb5-f51b7ea9fccc@pengutronix.de> Date: Fri, 19 May 2023 08:53:34 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.9.1 Content-Language: en-US To: Sascha Hauer Cc: Barebox List References: <20230517090340.3954615-1-s.hauer@pengutronix.de> <20230517090340.3954615-32-s.hauer@pengutronix.de> <20230517143935.GB29365@pengutronix.de> From: Ahmad Fatoum In-Reply-To: <20230517143935.GB29365@pengutronix.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230518_235336_556419_2C75FE66 X-CRM114-Status: GOOD ( 17.76 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.6 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH v2 31/34] ARM: mmu32: read TTB value from register X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) On 17.05.23 16:39, Sascha Hauer wrote: > On Wed, May 17, 2023 at 03:58:01PM +0200, Ahmad Fatoum wrote: >> On 17.05.23 11:03, Sascha Hauer wrote: >>> Instead of relying on a variable for the location of the TTB which we >>> have to initialize in both PBL and barebox proper, just read the value >>> back from the hardware register. >> >> Why not initialize on first call to get_ttb()? > > get_ttb() doesn't have access to endmem which we would need to get the > address for the ttb. > > Also we have the value in the hardware register, why not use it? I meant initialization using the hardware register. > > Sascha > > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |