From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 04 Oct 2021 12:57:34 +0200 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 1mXLf4-0005Bp-L4 for lore@lore.pengutronix.de; Mon, 04 Oct 2021 12:57:34 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mXLf3-00068f-H5 for lore@pengutronix.de; Mon, 04 Oct 2021 12:57:34 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:From:In-Reply-To:MIME-Version: References:Message-ID:Subject:Cc:To:Date:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=NpHSDn1Qk02ZLG6WqRbpIoxLWfQwQzhaJT1eqPn/p6U=; b=CemcT/zTmOmu7EC8QedQL6mU07 j3TXc66fU9xmqFUHnTEyxkrGCpisno/wO1dq6lZf5msR6mnBbD8ncE57gR/W8fgvWd2jgmMaG1Zbr exh1Y4xo8T/ArBEwGP831C+Iw7MAWrz3MX0f3B9X9lppHab2XrFSpcFXMgQgqiG6RaXDCoTrvJuQQ uRY5gHD0h4MfjL/NXaX8PXZ6giB7qodpgc3ND381140JjiHIuhP/5vlIBForTClpa2F47Gj33n7AM BxdKILM1YlHZY9HPVnrKV9SsB2MZURFfthFVTrE3XfUa3hCZslzkOLKwM0jEvQqWZGJu2wdtJEQQm AOBCF36w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mXLdm-0061t4-So; Mon, 04 Oct 2021 10:56:14 +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 1mXLdh-0061sL-Nm for barebox@lists.infradead.org; Mon, 04 Oct 2021 10:56:11 +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 1mXLdf-0005xd-QT; Mon, 04 Oct 2021 12:56:07 +0200 Received: from sha by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1mXLdd-0000uR-N8; Mon, 04 Oct 2021 12:56:05 +0200 Date: Mon, 4 Oct 2021 12:56:05 +0200 To: Ahmad Fatoum Cc: barebox@lists.infradead.org, lst@pengutronix.de, ukl@pengutronix.de, rcz@pengutronix.de Message-ID: <20211004105605.GU28453@pengutronix.de> References: <20210830115156.21907-1-a.fatoum@pengutronix.de> <20210830115156.21907-2-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210830115156.21907-2-a.fatoum@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-IRC: #ptxdist @freenode X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-Uptime: 12:54:18 up 228 days, 14:18, 147 users, load average: 0.27, 0.37, 0.28 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-20211004_035609_804120_8C82F30A X-CRM114-Status: GOOD ( 29.33 ) 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: 2607:7c80:54:e::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=-4.4 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 v2 2/3] mci: imx-esdhc-pbl: support eMMC boot partitions on i.MX8MP 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 Mon, Aug 30, 2021 at 01:51:55PM +0200, Ahmad Fatoum wrote: > The i.MX header for SD/MMC starts at an offset to allow for a partition > table at offset 0. i.MX8MN/P bootrom did away with the offset for eMMC > boot partitions, which usually lack on-disk partition tables, but kept a > 32-byte offset for SD and eMMC user partitions. > > The i.MX8MN/P also introduced a ROM API that allows chainloading from > boot medium by calling back into ROM. This likely handles that > difference for us, but as we don't support it yet and we already have > the PBL eSDHC driver, teach it to detect whether boot is from eMMC boot > partition or not and use the appropriate offset. > > Signed-off-by: Ahmad Fatoum > --- > v1 -> v2: > - new patch. Without, barebox can be written, but not booted. > Tested on i.MX8MN. > --- > drivers/mci/imx-esdhc-pbl.c | 39 ++++++++++++++++++++++++++++++++++++- > 1 file changed, 38 insertions(+), 1 deletion(-) > > diff --git a/drivers/mci/imx-esdhc-pbl.c b/drivers/mci/imx-esdhc-pbl.c > index e649eb8bbafb..66df4f6dfc74 100644 > --- a/drivers/mci/imx-esdhc-pbl.c > +++ b/drivers/mci/imx-esdhc-pbl.c > @@ -25,6 +25,40 @@ > > #define esdhc_send_cmd __esdhc_send_cmd > > +static u8 ext_csd[512] __aligned(64); > + > +static int esdhc_send_ext_csd(struct fsl_esdhc_host *host) > +{ > + struct mci_cmd cmd; > + struct mci_data data; > + > + cmd.cmdidx = MMC_CMD_SEND_EXT_CSD; > + cmd.cmdarg = 0; > + cmd.resp_type = MMC_RSP_R1; > + > + data.dest = ext_csd; > + data.blocks = 1; > + data.blocksize = sizeof(ext_csd); > + data.flags = MMC_DATA_READ; > + > + return esdhc_send_cmd(host, &cmd, &data); > +} Is this operation valid for SD cards as well? If not we would first have to know if we have a SD or eMMC card. 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 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox