From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 10 Mar 2025 16:11:52 +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 1trenI-00CIAQ-22 for lore@lore.pengutronix.de; Mon, 10 Mar 2025 16:11:52 +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 1trenH-0006v7-Ge for lore@pengutronix.de; Mon, 10 Mar 2025 16:11:51 +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=D80llDyu7LJo6JEhmcRQWROXIca4RWRyFRDYigGncfg=; b=OgzLyWJc7//c4ItM+w+pIevvNU HMyeKYAWkDm7WT1Ut4PJsCbaH+EtirApt9ZpWlPZmLSHYwt0ReCISqYgz0ZexucmFVpy4/BbZ9gTO ZKzq6zTkDwKmfYwkrEFLdgwUiQ/tAn+Qh0t00UQvjzKtu0KSzNea3dA34agY7XBiyHEFppgXqntan 9rLcylQNDDpDw0FuhB7aOtOgSP/DLo5Y5sQQRAvwlG4LQ/rbBbbGFrK92MbxxnwsIwElHJ6jd6oNR gX+nnYyHbyo+ttTMBszmYyQ3L8pBl8xUzs2pA50LUHZIDWM2U/HZCNqhoMb2FHD6H3e9gK6VkarvJ YizHQ0bQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tremp-000000036va-2PZ0; Mon, 10 Mar 2025 15:11:23 +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 1trdXy-00000002qr5-0Xem for barebox@lists.infradead.org; Mon, 10 Mar 2025 13:51:59 +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 1trdXv-0002LB-9n; Mon, 10 Mar 2025 14:51:55 +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 1trdXv-0050p0-09; Mon, 10 Mar 2025 14:51:55 +0100 Received: from mfe by pty.whiteo.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1trdXu-005wik-34; Mon, 10 Mar 2025 14:51:54 +0100 Date: Mon, 10 Mar 2025 14:51:54 +0100 From: Marco Felsch To: Ahmad Fatoum Cc: barebox@lists.infradead.org, Johannes Schneider Message-ID: <20250310135154.bw6awpkjydcf32zp@pengutronix.de> References: <20250310113626.2241630-1-m.felsch@pengutronix.de> <2770e761-a192-437f-bc82-128519c04d18@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2770e761-a192-437f-bc82-128519c04d18@pengutronix.de> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250310_065158_165796_4567724E X-CRM114-Status: UNSURE ( 8.94 ) X-CRM114-Notice: Please train this message. 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=-5.2 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 master] i.MX: HAB: fix i.MX8MP field-return fuse 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 25-03-10, Ahmad Fatoum wrote: > Hello Marco, > > On 3/10/25 12:36, Marco Felsch wrote: > > Current tests showed that fusing just the single field-return bit(0) on > > i.MX8MP SoCs brick the device. > > So such a device is bricked permanently with no way to upload > a bootloader again to fuse the remainder of the bits? Yes, as written here [3], the device isnow in "device asserts security violation" state, what ever this means but maybe: "I refuse to power up". [3] https://lore.kernel.org/all/a9ebece9-4ab6-4bca-bebe-985e0bf95278@oss.nxp.com/ > Interesting thing to not document :/ Took us 2 devices to figure it out :/ We also don't know why NXP doesn't care and don't update the (S)TRM since the v1 of [3] is 9months old. Regards, Marco