Date: Wed, 29 Jan 2020 22:03:34 +0000 From: greg@unrelenting.technology To: "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net>, "Poul-Henning Kamp" <phk@phk.freebsd.dk> Cc: "freebsd-arm" <freebsd-arm@freebsd.org>, "Emmanuel Vadot" <manu@bidouilliste.net>, "Robert Clausecker" <fuz@fuz.su>, "freebsd-arch" <freebsd-arch@freebsd.org> Subject: Re: arm64 as Tier 1 for FreeBSD 13 Message-ID: <85883a5a552a2d28b279e9281da660a7@unrelenting.technology> In-Reply-To: <202001292142.00TLgV9N066161@gndrsh.dnsmgr.net> References: <202001292142.00TLgV9N066161@gndrsh.dnsmgr.net>
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January 30, 2020 12:42 AM, "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.= net> wrote:=0A=0A>> --------=0A>> In message <20200129222907.3ccaf4c23fe8= 509e3f9cdfe4@bidouilliste.net>, Emmanuel Vadot writes:=0A>> =0A>> RPi's a= re a LOT easier to get hold of for hackers and in particular=0A>> for edu= cators.=0A>> =0A>> In what way ?=0A>> Real answer only.=0A>> =0A>> 1. Sch= ools can get them through their usual suppliers of educational=0A>> mater= ial, with a pretty decent discount, and with educational=0A>> courses and= materials, pretty much ready to go.=0A> =0A> As a bonus data point I hav= e seen RPI's in vending machines at=0A> universities that have engineerin= g departments. Thats just how=0A> "commidity" these items are in the educ= ational world.=0A> =0A>> 2. Most "maker-space" atuned electronics pushers= carry them.=0A>> =0A>> 3. Big electronics pushers carry them.=0A> =0A> Y= ou can walk into a Frys and walk out with one!=0A> =0A>> In re 1-3: No cu= stoms processing of shipment involved.=0A> =0A> :-)=0A> =0A>> 4. Cost, in= cluding shipping is below "trivial" threshold in most=0A>> organizations.= =0A> =0A> Yep.=0A> =0A> I have no problem if some want to ignore RPI*, bu= t as Poul says=0A> FreeBSD does so at its own peril. If its a man power t= hing lets=0A> find it or make it!=0A=0APSA: with the RPi 4, the distincti= on between proper SBSA/SBBR machines and the Pi can get quite small.=0ATh= e new SoC uses a GIC instead of a custom interrupt controller, so it is p= ossible to describe=0Aall the basics of the system using generic ACPI. An= d upstream TianoCore EDK2 is doing just that.=0AFor example, even the XHC= I USB controller can be a good old PNP0D10:=0Ahttps://github.com/tianocor= e/edk2-platforms/commit/0d4b36888b5e614afef0361fda6e899b85999a52=0A=0AThe= organization for this work is https://github.com/pftf=0A=0APeople have a= ctually got Windows (!!!) to run using this:=0Ahttps://twitter.com/WhatAi= ntInside/status/1221151430788161537=0A=0AAnd this doesn't mean we have to= kill the support for all the extra Pi features.=0AFor example, see how N= etBSD has added ACPI attachment for the Broadcom mailbox:=0Ahttps://githu= b.com/NetBSD/src/commit/12e2bb1bfb04328865863ea0d970e323ec0470e5
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