From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 22 Apr 2026 10:25:35 +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 1wFStr-00F24s-1M for lore@lore.pengutronix.de; Wed, 22 Apr 2026 10:25:35 +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 1wFStq-0007kx-NG for lore@pengutronix.de; Wed, 22 Apr 2026 10:25:35 +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-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Xz3ooxWcv9Y3mAD7V800n8nrPEa6bdBH4yY/v2e8wck=; b=dpLyuWdX98spmtwtNek37B/vJf UUwCaN2IZ1Ac9IvolrT1a9UARne1aaG1xRYKsBFQpI/HrMWZuc2dB3Q6cVXyDIVRq+207F66F4sg1 u1VuG1j0TeLcVVTR5+AENaGDcMbWGzM92hOM1qat2whL9puHWVq45Zc8+ih3ni/gwpB/0vWiJJd7a Wflayd24ZbzNJ3syaxPvx0fu/y2YfQyVBH7MlkdVWDWWKUhzRrR70F1ZjNBg5DBY1ONylKuc3zVDz Ft9MpL6H05Fi0dH9/OYhuZsusv90HaEnV1CNh9pQSbfAEP7EcTRWv6QYPXEjjZietBYXnKBHbziZR khcmH9xA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wFStN-00000009m6j-2y8w; Wed, 22 Apr 2026 08:25:05 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wFStL-00000009m6E-3NB9 for barebox@lists.infradead.org; Wed, 22 Apr 2026 08:25:05 +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 1wFStK-0007es-4D; Wed, 22 Apr 2026 10:25:02 +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 1wFStJ-006dWh-32; Wed, 22 Apr 2026 10:25:01 +0200 Received: from sha by pty.whiteo.stw.pengutronix.de with local (Exim 4.98.2) (envelope-from ) id 1wFStJ-00000008Jws-3WlF; Wed, 22 Apr 2026 10:25:01 +0200 Date: Wed, 22 Apr 2026 10:25:01 +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-v2-1-81fab6ba5de0@pengutronix.de> <479b96ec421925a887ad63f65a5c00478caac431.camel@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <479b96ec421925a887ad63f65a5c00478caac431.camel@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_012503_845538_A320BE0B X-CRM114-Status: GOOD ( 41.00 ) 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=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH v2 1/2] common: misc: add soc_uid_hex to globalvar 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, Apr 22, 2026 at 10:14:11AM +0200, Fabian Pflug wrote: > On Wed, 2026-04-22 at 09:56 +0200, Sascha Hauer wrote: > > On Wed, Apr 15, 2026 at 01:10:21PM +0200, Fabian Pflug wrote: > > > uidstr and uidbuf could be the same, but don't have to be. This results > > > in uncertainty on what exactly is the current UID used for > > > machine_set_hashable and to compare against with TLV. > > > > > > Add an additional global var, that encodes SoC-UID registers in a > > > manner uniform across SoCs/manufacturers. > > > > > > This can now be used to feed as data for bound-soc-uid into > > > `bareboxtlv-generator.py` or as the value for > > > `CONFIG_HABV4_CSF_UNLOCK_UID` > > > > > > Signed-off-by: Fabian Pflug > > > --- > > >  common/misc.c | 9 +++++++-- > > >  1 file changed, 7 insertions(+), 2 deletions(-) > > > > > > diff --git a/common/misc.c b/common/misc.c > > > index ecf9574f7a..be896706d6 100644 > > > --- a/common/misc.c > > > +++ b/common/misc.c > > > @@ -268,6 +268,7 @@ const uuid_t *barebox_get_product_uuid(void) > > >  BAREBOX_MAGICVAR(global.product.uuid, "SMBIOS-reported product UUID"); > > >   > > >  static char *soc_uid_str; > > > +static char *soc_uid_bin_str; > > >  static void *soc_uid; > > >  static size_t soc_uid_len; > > >   > > > @@ -295,18 +296,22 @@ void barebox_set_soc_uid(const char *uidstr, const void *uidbuf, size_t len) > > >   soc_uid = xmemdup(uidbuf, len); > > >   soc_uid_len = len; > > >   > > > + soc_uid_bin_str = xzalloc(len * 2 + 1); > > > + bin2hex(soc_uid_bin_str, uidbuf, len); > > > + > > >   if (uidstr) { > > >   soc_uid_str = xstrdup(uidstr); > > >   } else { > > > - soc_uid_str = xzalloc(len * 2 + 1); > > > - bin2hex(soc_uid_str, uidbuf, len); > > > + soc_uid_str = soc_uid_bin_str; > > >   } > > >   > > >   machine_id_set_hashable(uidbuf, len); > > >   > > >   globalvar_add_simple_string("soc_uid", &soc_uid_str); > > > + globalvar_add_simple_string("soc_uid_hex", &soc_uid_bin_str); > > > > barebox_set_soc_uid() takes two arguments, the raw SoC UID data and a > > SoC specific string representation of that data. It's unfortunate that > > you need two different interpretations of the raw data on i.MX, one to > > match the Linux /sys/ format and one to put into the CSF file. > > > > Anyway, just adding a second string representation not only for i.MX, > > but also for all other SoCs is rather confusing. For the i.MX field > > return case we could also add a hab command option or a i.MX specific > > globalvar which is exactly described as "SoC UID in the format the CSF > > needs" > > Please don't get confused. This is an additional benefit for the CSF in i.MX. The main focus here is to have a string > representation, that can be used in TLV generation, with the script in > https://github.com/barebox/barebox/blob/master/scripts/bareboxtlv-generator/bareboxtlv-generator.py > > The value > 0x0024, bound-soc-uid, "Reject TLV if supplied binary data does not match UID SoC register" > https://github.com/barebox/barebox/blob/v2026.04.0/common/tlv/barebox.c#L200 > > Needs this representation for all vendors, not just i.MX. > And since the values for soc_bin and uidstr can differ greatly, it is very soc specific on what value to use in the > https://github.com/barebox/barebox/blob/master/scripts/bareboxtlv-generator/data-example.yaml > > This patch tries to fix it, by giving a value, that can just be copied to TLC data.yaml Ok, I can much better buy TLV support as an argument. Please add a BAREBOX_MAGICVAR(global.soc_uid_hex, "byte array representation of the raw SoC UID"); 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 |