From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 22 Apr 2026 09:43:54 +0200 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 1wFSFW-00F1GG-1w for lore@lore.pengutronix.de; Wed, 22 Apr 2026 09:43:54 +0200 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 1wFSFW-0000Ga-0p for lore@pengutronix.de; Wed, 22 Apr 2026 09:43:54 +0200 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; 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Wed, 22 Apr 2026 09:43:15 +0200 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 1wFSEt-006dBP-1E; Wed, 22 Apr 2026 09:43:15 +0200 Received: from sha by pty.whiteo.stw.pengutronix.de with local (Exim 4.98.2) (envelope-from ) id 1wFSEt-00000008JcM-1Bkc; Wed, 22 Apr 2026 09:43:15 +0200 Date: Wed, 22 Apr 2026 09:43:15 +0200 From: Sascha Hauer To: Fabian Pflug Cc: Jonas Rebmann , BAREBOX Message-ID: References: <20260415-v2026-03-0-topic-soc_bin_id-v2-0-81fab6ba5de0@pengutronix.de> <20260415-v2026-03-0-topic-soc_bin_id-v2-2-81fab6ba5de0@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260415-v2026-03-0-topic-soc_bin_id-v2-2-81fab6ba5de0@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-20260422_004317_480573_9F479CB9 X-CRM114-Status: GOOD ( 29.46 ) 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=-4.8 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=ham autolearn_force=no version=3.4.2 Subject: Re: [PATCH v2 2/2] i.MX: HAB: update text for HABV4_CSF_UNLOCK_UID 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) Hi Fabian, On Wed, Apr 15, 2026 at 01:10:22PM +0200, Fabian Pflug wrote: > With the establishment of global.soc_uid_hex, there is no need to look > for the serial number and reverse it. > > Also some SoC's will have 128-bit UID's, so the hint to 64-bit is not > correct and should be removed. > > Signed-off-by: Fabian Pflug > --- > arch/arm/mach-imx/Kconfig | 11 +++-------- > 1 file changed, 3 insertions(+), 8 deletions(-) > > diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig > index 2e4d1ac80a..cb77d0d5b6 100644 > --- a/arch/arm/mach-imx/Kconfig > +++ b/arch/arm/mach-imx/Kconfig > @@ -918,17 +918,12 @@ config HABV4_CSF_UNLOCK_UID > depends on HABV4 && HABV4_CSF_UNLOCK_FIELD_RETURN > string "CSF Unlock UID" > help > - Device specific 64-bit UID required to unlock the field-return > + Device specific UID required to unlock the field-return > feature. This value must match the per device UNIQUE_ID fuses. > > The below example shows the expected format. The UNIQUE_ID is > - printed during boot by barebox: > - i.MX___ unique ID: 7766554433221100 > - or it can be queried by Linux via: > - - cat /sys/devices/soc0/serial_number > - 7766554433221100 I don't think we should remove this. For some people it might be more convenient to read the SoC UID from Linux or to parse it from the barebox console log. > - > - So this value have to be set: > + stored in $global.soc_uid_hex, but must be split into bytes. > + The soc_uid_hex 0011223344556677 becomes: > - 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77 By using soc_uid_hex we no longer have to reverse the byte order, but still have to reformat it (split into bytes, add 0x and comma). I think this little convenience gain is not worth the change really. 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