From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 19 Feb 2025 13:14:39 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tkiyN-004Iyg-2b for lore@lore.pengutronix.de; Wed, 19 Feb 2025 13:14:39 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tkiyM-0000Bz-KW for lore@pengutronix.de; Wed, 19 Feb 2025 13:14:39 +0100 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:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=y0qNHVY04/PMqWCh4NVHPkpJtoebw9qUHyri+PKi7uw=; b=wWWlZDmLRo5treiX5oB6BvoYvy s/6C3354rEL4nQvDaWYKZkrj/7WQ4MaLtCe+W9EuzkEuztB9gWZzWvwcVqHmB7UYaK40beXT3HurB nollALSR7xW8b3RS5PuYoU+TcVlu+jrrHB8U+0O/DmF8scFbRetR5v/SX0QPLXq/ZUOyTmDiMNri1 Y79HxTeZiP6ucPKMIEXEALLDU0FugJXqYfHIBZwlhQgN+1zNVPgntfsW1pK/JtCJdJueiPOKD+WJF iyJbS5wc3VKdsuqfXsLAkX1p86v+IB0ADT1roFA9cSB4d1ntkW86dvZYAQ95rp+9gPDy6ZXSIISZA phobP0hA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tkixc-0000000Cbjm-2zGe; Wed, 19 Feb 2025 12:13:52 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tkixZ-0000000Cbha-17fL for barebox@lists.infradead.org; Wed, 19 Feb 2025 12:13:50 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tkixV-0008VK-UB; Wed, 19 Feb 2025 13:13:45 +0100 Received: from pty.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::c5]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tkixV-001lIJ-2P; Wed, 19 Feb 2025 13:13:45 +0100 Received: from sha by pty.whiteo.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1tkixV-006FmR-24; Wed, 19 Feb 2025 13:13:45 +0100 Date: Wed, 19 Feb 2025 13:13:45 +0100 From: Sascha Hauer To: Marco Felsch Cc: Barebox List Message-ID: References: <20250218140407.1224499-1-s.hauer@pengutronix.de> <20250219104329.toyskdpkbtwftatc@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250219104329.toyskdpkbtwftatc@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250219_041349_305653_475EDF3E X-CRM114-Status: GOOD ( 22.43 ) 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.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.4 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH 1/2] ARM: i.MX6: Enable PBL_VERIFY_PIGGY with HABV4 support X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) On Wed, Feb 19, 2025 at 11:43:29AM +0100, Marco Felsch wrote: > Hi Sascha, > > On 25-02-18, Sascha Hauer wrote: > > Some i.MX6 configurations use the xload mechanism. With this the ROM > > only loads and verifies the PBL. The PBL will then load barebox proper. > > Without verification the barebox proper binary is untrusted and could be > > modified. Select PBL_VERIFY_PIGGY when HABV4 is enabled to ensure the > > barebox proper binary has not been tempered with. > > > > boards not using the xload mechanism don't need this option, but there > > is no good way to detect currently if the xload mechanism is used, so > > these boards will have to live with a slightly increased binary size > > for now. > > I hav no objections but do you have numbers? There are many i.MX6 based > systems which do use a spi-nor with limited amount of space already > facing size issues since barebox is becoming bigger and bigger. Enabling PBL_VERIFY_PIGGY increases the PBL by about ~6k on ARM/ARM64. We could add the select to MCI_IMX_ESDHC_PBL instead. The SPI xload code doesn't have a corresponding Kconfig symbol though, so we would have to add that first. 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 |