From owner-freebsd-arch@FreeBSD.ORG Mon May 24 18:22:10 2010 Return-Path: Delivered-To: freebsd-arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8F610106568A for ; Mon, 24 May 2010 18:22:10 +0000 (UTC) (envelope-from phcoder@gmail.com) Received: from mail-wy0-f182.google.com (mail-wy0-f182.google.com [74.125.82.182]) by mx1.freebsd.org (Postfix) with ESMTP id 141BB8FC18 for ; Mon, 24 May 2010 18:22:09 +0000 (UTC) Received: by wyb39 with SMTP id 39so447798wyb.13 for ; Mon, 24 May 2010 11:22:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:cc:subject:references:in-reply-to :x-enigmail-version:content-type; bh=A9Skb3jSDa+md9CNAzu/6SsRoXTmHieLGqVifg1+uOw=; b=LPMCRHi1oY7sVwgFnisgWTBckTxfNvjBUvN6wdoLO91SPSCwjcu+w/dASTOw2Tr31y CXfW2FIMOCqvEhAD08U9LVUMXjmxz39Jhq0zNLbW3GVy+RNGbeGrMht8zCAdhwxsfHMf fKRnP9Ux7aGHxMxLDfXQ8Q0RAKondUNPfTOiE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:x-enigmail-version:content-type; b=ousNyq2FeDA7r9RYSJvqsDWngusMyrHnRYq+bqYxlxi98hlz0BZ2M41FxdBsESzQat j7BaP/pHCWLvMR6AzKscB7e3o8UYfJJaNINslN8jHzVLPrYB70g5+m5hecCXIkkrucO3 PejK4ipbLPvXd4+34vwxmjkkKToFxtv9hBE9g= Received: by 10.227.135.198 with SMTP id o6mr5788853wbt.142.1274725328604; Mon, 24 May 2010 11:22:08 -0700 (PDT) Received: from debian.bg45.phnet (gprs35.swisscom-mobile.ch [193.247.250.35]) by mx.google.com with ESMTPS id 15sm2029886ewy.12.2010.05.24.11.22.06 (version=TLSv1/SSLv3 cipher=RC4-MD5); Mon, 24 May 2010 11:22:07 -0700 (PDT) Message-ID: <4BFAC3C9.1080409@gmail.com> Date: Mon, 24 May 2010 20:22:01 +0200 From: =?UTF-8?B?VmxhZGltaXIgJ8+GLWNvZGVyL3BoY29kZXInIFNlcmJpbmVua28=?= User-Agent: Mozilla-Thunderbird 2.0.0.22 (X11/20091109) MIME-Version: 1.0 To: "M. Warner Losh" References: <4BE98FB5.3060906@gmail.com> <20100514020055.GB89230@duncan.reilly.home> <4BECEE31.3060004@gmail.com> <20100514.064409.634347869525783787.imp@bsdimp.com> In-Reply-To: <20100514.064409.634347869525783787.imp@bsdimp.com> X-Enigmail-Version: 0.95.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="------------enigF203EAB0CFAF9939618CFF30" Cc: grub-devel@gnu.org, freebsd-arch@freebsd.org Subject: Re: [RFC] Multiboot2 drafting X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 24 May 2010 18:22:10 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigF203EAB0CFAF9939618CFF30 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable M. Warner Losh wrote: > In message: <4BECEE31.3060004@gmail.com> > Vladimir '=CF=86-coder/phcoder' Serbinenko writes: > : Yes and No. multiboot2 describes some aspects of the host system > : hardware but I've never heard of device trees outside of IEEE1275 or > : xnu, where it's probably a historical leftover. > > It is far from a historical left-over. I meant the only xnu on i386. It receives a device tree from bootloader but on most platforms it's either empty or ignored > Linux critically depends on > the boot loader on PowerPC to provide it with a tree of devices that > it cannot otherwise probe. On other architectures, it is becoming an > optional way to specify the device tree as well. There are many > different implementations of this, since primarily it is just data and > boot loaders are good at providing binary blobs to the kernel... > =20 Could we come up with a standard of passing this information in multiboot= 2? > In addition, Rafal Jawarski has ported this technology to FreeBSD. > He's presenting a paper on it today at BSDcan: > http://www.bsdcan.org/2010/schedule/events/171.en.html > I've reviewed the work, and it goes a long way towards making some of > the more stupid and repetitive parts of doing a port to a new embedded > architecture easy. > > Warner > =20 --=20 Regards Vladimir '=CF=86-coder/phcoder' Serbinenko --------------enigF203EAB0CFAF9939618CFF30 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iF4EAREKAAYFAkv6w8kACgkQNak7dOguQglzJQEAnpQvl5/6IXEUTXfr28Iihl4e qQBLHbOuHbw5L1kRiSQA/0TCDLg8/TnkZGlQq7AqMdg9fXcRBWfoMHe2Lk+Wsi6M =sE7Y -----END PGP SIGNATURE----- --------------enigF203EAB0CFAF9939618CFF30--