From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 15 Mar 2021 16:47:52 +0100 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1lLpRg-0001Lc-V7 for lore@lore.pengutronix.de; Mon, 15 Mar 2021 16:47:52 +0100 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lLpRg-0001oj-2m for lore@pengutronix.de; Mon, 15 Mar 2021 16:47:52 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:Cc:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=OxPd+NUKm0ucfhyjoCmi45U8vyUMtukgGBxGAR+JRLw=; b=iMzlcI+LPzMgdTGV5VTCYxzFi g+vkU8iw/u3IyDdBQEeE3XW7D6p5IQv3GdFBIsFBXULCi9uKemZ7+zebhh9M7K2AUf5GUxVCsPgrz GiOS8evHx2Eg6guX1zi1gd3qDB8EDZqgCcUVuIUukFXC4Px9RU3US6MbIQ/FnzqqW5Q2t9WHN8xVm mBnsHrUN3kHPCwT/8AqcmGZnRoYXvqX0ITbtO9YWegQLfbZaUcKg9nSzJLWee7PCbNw+53Pelpa2V rsZm3VXCXdgfeG5PRBp9wi4pNK8mxSsOv+s8ZtGmx2igFpW/36FucN4efaLHm8T6qnHcWzLp5TqC3 v/7vVjOeQ==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lLpQS-00GICd-SE; Mon, 15 Mar 2021 15:46:36 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lLpQI-00GIBj-Bw for barebox@lists.infradead.org; Mon, 15 Mar 2021 15:46:30 +0000 Received: from gallifrey.ext.pengutronix.de ([2001:67c:670:201:5054:ff:fe8d:eefb] helo=[IPv6:::1]) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1lLpQH-0001i0-OJ; Mon, 15 Mar 2021 16:46:25 +0100 To: Antony Pavlov , Oleksij Rempel , Michael Grzeschik Cc: barebox@lists.infradead.org References: <20210314122804.4128-1-a.fatoum@pengutronix.de> <20210314122804.4128-15-a.fatoum@pengutronix.de> <20210315114353.c3bece8ebb5eae822e9349bd@gmail.com> <20210315114515.hcqboeb53otdums7@pengutronix.de> <20210315150834.2607507ef97f6a63d68494d4@gmail.com> <20210315183737.22015972e2e058b32f21447c@gmail.com> From: Ahmad Fatoum Message-ID: <14b14f6b-a8ae-1b8b-c06a-73d909a4a9f7@pengutronix.de> Date: Mon, 15 Mar 2021 16:46:25 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 In-Reply-To: <20210315183737.22015972e2e058b32f21447c@gmail.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210315_154628_841085_21248367 X-CRM114-Status: GOOD ( 17.92 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2001:8b0:10b:1:d65d:64ff:fe57:4e05 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=-3.5 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: MIPS RELOCATABLE: [PATCH 14/20] RISC-V: erizo: migrate to PBL 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) Hi, On 15.03.21 16:37, Antony Pavlov wrote: > On Mon, 15 Mar 2021 13:40:10 +0100 > Ahmad Fatoum wrote: >> Without having dug into the MIPS code, the main point of CONFIG_RELOCATABLE >> is that PBL can check for it to decide where to copy barebox proper to. >> >> This is very relevant if there's no TEXT_BASE that works for all boards >> that you need to support with your multi-image barebox. > > So CONFIG_RELOCATABLE can be very helpful. > > At the moment MIPS barebox is always relocatable. > Sometimes it's useful to run barebox from fixed TEXT_BASE (e.g. during gdb debug session), > so this fixed TEXT_BASE behaviour can be introduced for CONFIG_RELOCATABLE=n case. With the pbl break stuff, you could in theory already flip a config option and have a gdb script that computes your load address from the address of your breakpoint. That would be nice to have as a ready-to-use script. I recall Oleksij and Michael did something in that regard. Benefit is that the break is an actual machine code nop when inactive, so binary size/layout shouldn't change, unlike with flipping CONFIG_RELOCATABLE. For RISC-V, I see no good reason to allow CONFIG_RELOCATABLE=n right now. Cheers, Ahmad -- 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 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox