From owner-freebsd-arm@freebsd.org Sun May 31 19:04:52 2020 Return-Path: Delivered-To: freebsd-arm@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 32ACF33E3DC for ; Sun, 31 May 2020 19:04:52 +0000 (UTC) (envelope-from freebsd@cyclaero.com) Received: from mo4-p00-ob.smtp.rzone.de (mo4-p00-ob.smtp.rzone.de [81.169.146.221]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "*.smtp.rzone.de", Issuer "TeleSec ServerPass Class 2 CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49Znmf48cYz3TwH; Sun, 31 May 2020 19:04:50 +0000 (UTC) (envelope-from freebsd@cyclaero.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1590951888; s=strato-dkim-0002; d=cyclaero.com; h=To:References:Message-Id:Cc:Date:In-Reply-To:From:Subject: X-RZG-CLASS-ID:X-RZG-AUTH:From:Subject:Sender; bh=ZekruijvXJNOSo0UyOj+wftLovlFnZVInAlqwK8tAz0=; b=M9kiNAlXK8B7SAoQyJGepiFxpnVKJ+7mZa/bj9E4qkSSpx5SjGqYx86B8W36UFQyfg 2PbE2VV80naKfskPTx8cChulDjMcGPzWTA4uzszOGeTWnaqbRazOGma7AdD65uHZL/Vs WBzAsocrMVL7fGXI9a33QbIjIQyoii1WT8K63IVqLnjayURakiZLccx0fksOC37wTvON gJLSu42BAQOr6eg+uo5UrFkU2QlV7hMk0QSB5ggGgf4wVebuqxzrBSAjT9eMYKdRo3Sl Jefl8cCyVter7jdNZErXx26fOubxYW0XGQP3OsqKgx67jQiN/q/YAkas4FDelYFWogY3 jr4Q== X-RZG-AUTH: ":O2kGeEG7b/pS1F2rRHW2isrKl4DV03XBEi+I6ZuztdvN9wS3wFGySS4Lw+ldTBio0dVbInGjc9PbZFAm0A==" X-RZG-CLASS-ID: mo00 Received: from mail.obsigna.com by smtp.strato.de (RZmta 46.9.0 DYNA|AUTH) with ESMTPSA id I06cf5w4VJ4mAnD (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Sun, 31 May 2020 21:04:48 +0200 (CEST) Received: from rolf-mini.obsigna.com (rolf-mini.obsigna.com [192.168.222.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.obsigna.com (Postfix) with ESMTPSA id 101AD1350F91D; Sun, 31 May 2020 16:04:46 -0300 (-03) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\)) Subject: Re: BeagleBone AI From: "Dr. Rolf Jansen" In-Reply-To: <845302190a78fdc46fac0f34326daad4496c7227.camel@freebsd.org> Date: Sun, 31 May 2020 16:04:44 -0300 Cc: freebsd-arm@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: <1D278E6E-B9BC-42A7-BC71-9279BE19EFBF@cyclaero.com> References: <845302190a78fdc46fac0f34326daad4496c7227.camel@freebsd.org> To: Ian Lepore X-Mailer: Apple Mail (2.3445.104.11) X-Rspamd-Queue-Id: 49Znmf48cYz3TwH X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=pass header.d=cyclaero.com header.s=strato-dkim-0002 header.b=M9kiNAlX; dmarc=none; spf=pass (mx1.freebsd.org: domain of freebsd@cyclaero.com designates 81.169.146.221 as permitted sender) smtp.mailfrom=freebsd@cyclaero.com X-Spamd-Result: default: False [-1.34 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[cyclaero.com:s=strato-dkim-0002]; NEURAL_HAM_MEDIUM(-1.06)[-1.063]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; MV_CASE(0.50)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; R_SPF_ALLOW(-0.20)[+ip4:81.169.146.128/25]; DMARC_NA(0.00)[cyclaero.com]; NEURAL_HAM_LONG(-1.01)[-1.006]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[cyclaero.com:+]; RCPT_COUNT_TWO(0.00)[2]; RCVD_IN_DNSWL_NONE(0.00)[81.169.146.221:from]; FROM_NAME_HAS_TITLE(1.00)[dr]; NEURAL_HAM_SHORT(-0.27)[-0.275]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RWL_MAILSPIKE_VERYGOOD(0.00)[81.169.146.221:from]; ASN(0.00)[asn:6724, ipnet:81.169.144.0/22, country:DE]; RCVD_TLS_ALL(0.00)[]; MID_RHS_MATCH_FROM(0.00)[] X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 31 May 2020 19:04:52 -0000 > Am 31.05.2020 um 14:04 schrieb Ian Lepore : >=20 > On Fri, 2020-05-29 at 23:21 -0300, Dr. Rolf Jansen wrote: >> ... >>=20 >> First Question: >>=20 >> What modern SBC with more than 1 I=C2=B2C bus and which can run = FreeBSD 13++ would you suggest? >>=20 >> ... >>=20 >> Two more Questions: >>=20 >> Is it reasonable to assume that FreeBSD would run on a BBAI in the = future, let=E2=80=99s say in 2 to 3 years? >>=20 >> Perhaps I could help porting FreeBSD to a BBAI. What would be the = general steps? >>=20 >>=20 >> Many thanks in advance for any suggestions, advices and = clarifications. >>=20 >> Best regards >>=20 >> Rolf >=20 > The only problem with the Beaglebone is that the TI linux developers > are continually tinkering with their drivers and DTS source, and they > seemingly don't care about the devicetree rules for maintaining > compatibility, so freebsd tends to break on BB boards every time we > import new DTS sources. Yes, this is really annoying. For getting the BeagleBone Black working = with 13-CURRENT, I need to replace the DTS at sys/gnu/dts/arm, which is = currently v5.6, with v4.2 (r347365), and then rebuild the kernel. > If you want to stick with armv7/32-bit stuff, I would say your best = bet > for long term freebsd support would be Allwinner or imx6. My concern is not 32 or 64bit. These unit controllers will never ever = run a desktop environment, so it won=E2=80=99t even come close to touch = any 32bit memory limit. That said, 64bit is not exactly needed but would = not harm either. > I keep hearing mumbling about freebsd throwing all 32-bit support > overboard in a future release. I have no idea how serious any of that > mumbling is, but if there's any truth to it at all, then switching to > one of the low-cost well-supported arm64 boards, such as pine64, might > be a better option. Well, if longterm support for 32bit of FreeBSD is questionable, this = would be a huge road block for the BeagleBone AI. I will also respond to = your other message. Best regards Rolf