From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with archive (Exim 4.43) id 1OpGeB-0001sO-7P for mharc-grub-devel@gnu.org; Sat, 28 Aug 2010 04:20:19 -0400 Received: from [140.186.70.92] (port=45505 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OpGe3-0001rN-12 for grub-devel@gnu.org; Sat, 28 Aug 2010 04:20:15 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OpGdx-0000cL-SD for grub-devel@gnu.org; Sat, 28 Aug 2010 04:20:10 -0400 Received: from mail-bw0-f41.google.com ([209.85.214.41]:40829) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OpGdx-0000c9-J1 for grub-devel@gnu.org; Sat, 28 Aug 2010 04:20:05 -0400 Received: by bwz6 with SMTP id 6so3252260bwz.0 for ; Sat, 28 Aug 2010 01:20:04 -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:subject:references:in-reply-to :x-enigmail-version:content-type; bh=IHnXFqLZVFokZ3YJQcE2P2KTd+4xzQQGRAvJfkr68sw=; b=dcgswwXTjpN0iBS56OTo7sFg1MstCFWwxCVjwJvZrrEfe+PBcbxGQJvB8bao+9ghHw JdzCZJ+nUx5vNBu/qBIdmp3kTsbEznTP4k8JSOwAv+tTkmBMu3UOmrFdFOcLiip5j3Yp I1QX2AqBMXb8oro+ZfnhJ8IAjuaro+y1q7btc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:x-enigmail-version:content-type; b=DymVPopIPX8eURkiLdI8mgX7UkIZhszNE+OVDNoc4gTXYX9S4qaezzUWzuKXlUHFIK xauMJU7kAn2lMAyM6FdzNgJqTJJ1zy+9/YVO3DnooiZDZy3wxx21fDtAzKR4X4m01UNt 9E8PLk05/ILTbQ40c9zLZiq/3TqYJrMUlvApE= Received: by 10.204.46.23 with SMTP id h23mr1265133bkf.75.1282983604275; Sat, 28 Aug 2010 01:20:04 -0700 (PDT) Received: from debian.bg45.phnet (5.101.63.81.cust.bluewin.ch [81.63.101.5]) by mx.google.com with ESMTPS id 24sm3264146bkr.19.2010.08.28.01.20.02 (version=TLSv1/SSLv3 cipher=RC4-MD5); Sat, 28 Aug 2010 01:20:03 -0700 (PDT) Message-ID: <4C78C6AA.7060205@gmail.com> Date: Sat, 28 Aug 2010 10:19:54 +0200 From: =?UTF-8?B?VmxhZGltaXIgJ8+GLWNvZGVyL3BoY29kZXInIFNlcmJpbmVua28=?= User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.11) Gecko/20100805 Icedove/3.0.6 MIME-Version: 1.0 To: grub-devel@gnu.org References: In-Reply-To: X-Enigmail-Version: 1.0.1 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="------------enigF235D553F019DB20F7265C08" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) Subject: Re: grub2 EFI 64-bit capable of loading 32-bit kernel ? X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: The development of GNU GRUB List-Id: The development of GNU GRUB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 28 Aug 2010 08:20:16 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigF235D553F019DB20F7265C08 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 08/28/2010 09:01 AM, meta tech wrote: > Hello, > First of all please avoid using HTML-formatted messages. > I have a MacBook with a EFI 64-bit. > I would like to boot Ubuntu 10.04 32-bit from grub EFI 64-bit. > Is that possible ? > GRUB supports such a config. However Linux EFI support doesn't. Adding "noefi" to command line workarounds the problem. > The boot freezes after the following output > > ROM image is present > [Linux-bzImage, setup=3D0x3400, size=3D0x3d56c0] > Video mode: 1440x900-32@0 > Display Controller: 2:0.0 > Device id: 64710de > MMIO(0): 0xe4000000 > VMEM(1): 0xc0000000 > MMIO(3): 0xe2000000 > Frame buffer base : 0xc0030000 > Video line length: 8192 > [Initrd, addr=3D0x3f7fff000, size=3D0x7f0349] > > That might be a problem of the kernel, or a video problem (my > investigation are related here > : http://ubuntuforums.org/showthread.php?t=3D1557326) > > I added some "printf" in the "grub_linux_boot" function of the > "efi/linux.c" file but they are never reached. > > Also, I tried to configure grub EFI 64-bit to chainload grub EFI > 32-bit, but I get the following error :=20 > > /EndEntire > filepath:/ACPI[=E2=80=A6]/File(\efi\grub32)/File(grub.efi)/EndEntire > error: cannot load image. > Press any key to continue > > > > > > =20 > > I tried to chainload grub EFI 64-bit to grub EFI 64-bit (itself), and > that works fine. > > Are there any restrictions in loading 32-bit from 64-bit versions ? > I looked in the FAQ and in the source code of "efi/linux.c" but I do > not see an answer. > > Thanks in advance, > > metatech > > > > > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > http://lists.gnu.org/mailman/listinfo/grub-devel > =20 --=20 Regards Vladimir '=CF=86-coder/phcoder' Serbinenko --------------enigF235D553F019DB20F7265C08 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/ iF4EAREKAAYFAkx4xqoACgkQNak7dOguQgnUnQD/ZXDRRosG6iSZUbRMUCDHx3YM EoIlaRyVD7pb5AY0fw0A/jsAloq3rHo17i8+0VTZo7P9FE10CJMEcp+2aFbyXQWP =RhDj -----END PGP SIGNATURE----- --------------enigF235D553F019DB20F7265C08--