From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp1 ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms0.migadu.com with LMTPS id qOqwDLD8OGENZQEAgWs5BA (envelope-from ) for ; Wed, 08 Sep 2021 20:10:56 +0200 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp1 with LMTPS id CGeICLD8OGGOTQAAbx9fmQ (envelope-from ) for ; Wed, 08 Sep 2021 18:10:56 +0000 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id D38BD267D for ; Wed, 8 Sep 2021 20:10:54 +0200 (CEST) Received: from localhost ([::1]:57054 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mO228-0002Pl-SO for larch@yhetil.org; Wed, 08 Sep 2021 14:10:52 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42352) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mO21t-0002Pc-Vz for help-guix@gnu.org; Wed, 08 Sep 2021 14:10:38 -0400 Received: from dustycloud.org ([50.116.34.160]:58562) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mO21l-0005Wp-Pl for help-guix@gnu.org; Wed, 08 Sep 2021 14:10:36 -0400 Received: from twig (localhost [127.0.0.1]) by dustycloud.org (Postfix) with ESMTPS id 3E08E2661B; Wed, 8 Sep 2021 14:10:28 -0400 (EDT) References: <87ftcaqxer.fsf@dustycloud.org> <874kbogf1h.fsf@dustycloud.org> <877dgjd441.fsf@d2.com> <87mtordcqq.fsf@dustycloud.org> <20210907063652.697bd4e3@primarylaptop.localdomain> <87h7ewb5mg.fsf@dustycloud.org> <20210907220719.538f582a@primarylaptop.localdomain> <87wnnr9wfp.fsf@dustycloud.org> User-agent: mu4e 1.6.2; emacs 27.2 From: Christine Lemmer-Webber Subject: Re: Guix on the MNT Reform Date: Wed, 08 Sep 2021 14:08:41 -0400 In-reply-to: <87wnnr9wfp.fsf@dustycloud.org> Message-ID: <87czpj9bvw.fsf@dustycloud.org> MIME-Version: 1.0 Content-Type: text/plain Received-SPF: pass client-ip=50.116.34.160; envelope-from=cwebber@dustycloud.org; helo=dustycloud.org X-Spam_score_int: -8 X-Spam_score: -0.9 X-Spam_bar: / X-Spam_report: (-0.9 / 5.0 requ) BAYES_00=-1.9, MISSING_HEADERS=1.021, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-guix@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: help-guix@gnu.org Errors-To: help-guix-bounces+larch=yhetil.org@gnu.org Sender: "Help-Guix" X-Migadu-Flow: FLOW_IN ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1631124656; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:cc:cc:mime-version:mime-version: content-type:content-type:in-reply-to:in-reply-to: references:references:list-id:list-help:list-unsubscribe: list-subscribe:list-post; bh=qkLFk1a8ffY5MtsOfi0r/Y1hGr5+yZucaiuBvwE4b+k=; b=ccCA0qisT/Nh9Q+aNtMr+biyEPiS8hWT3obwMIY+DERWRmFmwqJOaVK9s9h2aElIdm+1zU ZEvRGCkm2Qg7s8UYvuqP+CvNlDqKWnVgRN2YU07xirp940BcEGo0Cj+6eTihnUhA705E9S tRcRAS9E0+a0j7ZsJIjF0+DWwA5Op5puud3ceoLoRHBra/Jb/Z1alUlPk6Z6FFk5wKZ0Sh ekUaRwDsCux7n/URbbjdOtDCvXnWi87Uy9LlkPDZUdW1Z2ZfdC5Re8FcLnBYFuga5BmlBF MA2jaktHZozPD3EqmGW7oudlZIO9V2Dv4KoyWo2avWyYEGwRY05X73Z3xmMSig== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1631124656; a=rsa-sha256; cv=none; b=belAzkIJKLseR/FotEFkLr08ExraowKptGJad59Q7CkaM9ZIwzzy2ik+mYjbYx6KihaHMx lyOvQqFw1b8Hg2g4x+s1kquSXje33GM3L3I7UtwT9j/S0akeB5yHC2b1akdziTZx8+Cc+I CqPUGIHbtcotZBZGeS/7/SP+aktFr/0zDdJ7aRCf+6OkFmPKBfnlUHpaAq1rGrkwl93eTX 5JKliMCSiZhoUjBxt86ETP046rtw2qjIzzBf8bwL80y/W04SH5X985yZunMLwr1DPzxxFw 8J4ji/SuCet68gAP6UeWulJy7yDmR7vg6gGhxxXuwJSSQ5oa9DUtX2zvAgdoOg== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=none; dmarc=none; spf=pass (aspmx1.migadu.com: domain of help-guix-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=help-guix-bounces@gnu.org X-Migadu-Spam-Score: -0.41 Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=none; spf=pass (aspmx1.migadu.com: domain of help-guix-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=help-guix-bounces@gnu.org X-Migadu-Queue-Id: D38BD267D X-Spam-Score: -0.41 X-Migadu-Scanner: scn0.migadu.com X-TUID: hKHcKi9HnMpT Christine Lemmer-Webber writes: > Denis 'GNUtoo' Carikli writes: > >> Christine Lemmer-Webber wrote: >> >>> I had thought looking at the manual of the MNT Reform that only the >>> HDMI port required a blob. This will be disappoiting if we can't get >>> the Reform into Guix proper soon. There are of course channels, and >>> maybe the work here might have to move to one of those locations >>> rather than getting committed to the main guix repo, but I hope not. >> >> In their "Re-Introducing Reform" blog post[3], MNT Research states the >> following: >> >>> Unfortunately, during the boot process, i.MX8M requires a >>> closed-source firmware for an embedded ARCompact processor in the >>> Synopsys DDR4 PHY. This firmware, which is only a few kilobytes in >>> size, is responsible for regulating the physical connection to the >>> DDR chips in the face of changing temperatures. We are in contact >>> with reverse engineers with the goal of analyzing what the >>> capabilities of this so called PHY Utility Block (PUB) are, and to >>> find out if we have a chance to replace this firmware at some point >>> in the future. > > So, that is disappointing, but also a space for optimism I guess? I > would be curious to know more about this reverse engineering effort. > >> So it would also be a good idea to remind them about that and >> potentially look for other declarations from MNT Research about the >> DDR4 firmware. > > Yeah. I talked with them a bit today btw. There hasn't been progress, and the conversation might have reignited some interest, but it was made clear that this was not a current focus at the moment.