From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 04 Jan 2023 11:59:22 +0100 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 1pD1UR-001NDg-0l for lore@lore.pengutronix.de; Wed, 04 Jan 2023 11:59:22 +0100 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 1pD1UO-00087A-RH for lore@pengutronix.de; Wed, 04 Jan 2023 11:59:21 +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:From:In-Reply-To: Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To: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=uUVwav47ePPppntAYec85joONeQUu6WohbM8HxMkBCw=; b=qEI2J5IH7QsbVXGf7Yh5h2thaF MBOlDTL4mE+GzpND6vWUZKX/OLEjpuJ3bvERWVBYT+cDwn9YxYk34sWcW42TCAkV5H/DguOjhQJ4K vkDxnrJ6+r4jlblciqIhZbwVjfHW8lY5umt9O93013F1RgEKvipvpdmzvOFkoLGbotcHpTn3+Er5p sLto3kwzFlFtN1+GUOA6RmZDA69IIJfu/jNQPySwsDZUMwecw++gRK6fp2XwPdDiyfXCT05CQLcCK dbf4s24sGXOiTwV8A2gImLeCtYLNtDHdKKmzaqmLNHREGQwTaLTPf6JM5xOGhG48BttIWNO7UKmVJ HlYtE7pw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pD1Sz-008ann-3e; Wed, 04 Jan 2023 10:57:53 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pD1Lc-008XmU-Sp for barebox@lists.infradead.org; Wed, 04 Jan 2023 10:50:26 +0000 Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pD1LY-000799-Ie; Wed, 04 Jan 2023 11:50:12 +0100 Received: from sha by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1pD1LY-000852-8s; Wed, 04 Jan 2023 11:50:12 +0100 Date: Wed, 4 Jan 2023 11:50:12 +0100 To: Ahmad Fatoum Cc: barebox@lists.infradead.org, BAUER Bernd Message-ID: <20230104105012.GQ11668@pengutronix.de> References: <20230103215448.3655459-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230103215448.3655459-1-a.fatoum@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-Accept-Language: de,en X-Accept-Content-Type: text/plain User-Agent: Mutt/1.10.1 (2018-07-13) From: Sascha Hauer X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230104_025018_997903_81142599 X-CRM114-Status: GOOD ( 26.13 ) 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=-4.7 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, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH] Documentation: i.MX8M: add EVK barebox installation documentation 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 Tue, Jan 03, 2023 at 10:54:48PM +0100, Ahmad Fatoum wrote: > The barebox i.MX images have a preamble that pads the i.MX header to the > offset expected by the BootROM. This allows writing barebox images > directly to offset 0 on SD-Cards and eMMC user area. For some i.MX8M, > these images can't be directly written to eMMC boot partitions and > instead require special handling. Add a note about this to the > documentation. > > Signed-off-by: Ahmad Fatoum > --- > Documentation/boards/imx/nxp-imx8mm-evk.rst | 18 ++++++++++++++++ > Documentation/boards/imx/nxp-imx8mn-evk.rst | 24 +++++++++++++++++++++ > Documentation/boards/imx/nxp-imx8mp-evk.rst | 24 +++++++++++++++++++++ > 3 files changed, 66 insertions(+) > > diff --git a/Documentation/boards/imx/nxp-imx8mm-evk.rst b/Documentation/boards/imx/nxp-imx8mm-evk.rst > index c3cd35ae38a2..7ed7459c08a6 100644 > --- a/Documentation/boards/imx/nxp-imx8mm-evk.rst > +++ b/Documentation/boards/imx/nxp-imx8mm-evk.rst > @@ -69,3 +69,21 @@ board for serial download mode as printed on the PCB. You can start barebox with > the imx-usb-loader tool that comes with barebox like this: > > ./scripts/imx/imx-usb-loader images/barebox-nxp-imx8mm-evk.img > + > +Installing barebox > +================== > + > +When the EVK is strapped to boot from eMMC, the i.MX8M bootrom will > +consult the eMMC ext_csd register to determine whether to boot > +from the active eMMC boot partition or from the user area. > + > +The same barebox image written to the start of the SD-Card can > +be written to the start of the eMMC user area. Power-fail installation > +to the eMMC boot partition requires special handling: "Power-fail installation" sounds strange. What you mean is an installation into the boot partitions which can be updated power fail safely. I don't know how to put that into two words, maybe just drop the "Power-fail" part. 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