From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony Liguori Subject: Re: [Bochs-developers] [PATCH][BIOS] Add BCV option rom in boot menu Date: Sun, 07 Dec 2008 10:59:54 -0600 Message-ID: <493C010A.8060406@codemonkey.ws> References: <1228493974-20194-1-git-send-email-Laurent.Vivier@bull.net> <2ED7D7D30FCC4E03A5A30AF6A3DF6F01@FSCPC> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Laurent Vivier , bochs-developers@lists.sourceforge.net, kvm@vger.kernel.org To: Sebastian Herbszt Return-path: Received: from an-out-0708.google.com ([209.85.132.247]:15336 "EHLO an-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754040AbYLGRAA (ORCPT ); Sun, 7 Dec 2008 12:00:00 -0500 Received: by an-out-0708.google.com with SMTP id d40so338455and.1 for ; Sun, 07 Dec 2008 08:59:57 -0800 (PST) In-Reply-To: <2ED7D7D30FCC4E03A5A30AF6A3DF6F01@FSCPC> Sender: kvm-owner@vger.kernel.org List-ID: Sebastian Herbszt wrote: > Laurent Vivier wrote: >> This patch allows to select and boot from an option ROM >> with a Boot Connection Vector (BCV) entry. >> >> The BIOS detects the BCV option ROM and adds it to the IPL table, and >> then >> you are able to select it to boot. >> >> This patch has been tested with Bochs BIOS version from the KVM >> source tree >> and a gPXE ROM modified to be a BCV one. > > Any plans to convert extboot into a compatible option rom? I think the plan is to replace extboot with gPXE, and load it by default in QEMU. Since it supports BCV and BEV, we can rely on passing a boot index to choose which device to boot from. I was thinking about what to do about SCSI boot support. We could add an LSI driver to gPXE too. That seems like a bit much though. We could add a special virtio transport for gPXE and then reuse virtio-blk to boot from arbitrary devices. Regards, Anthony Liguori