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Re: [Qemu-devel] Re: [RFC] linuxboot Option ROM for Linux kernel booting
From: |
Laurent Vivier |
Subject: |
Re: [Qemu-devel] Re: [RFC] linuxboot Option ROM for Linux kernel booting |
Date: |
Tue, 22 Apr 2008 17:02:36 +0200 |
Le mardi 22 avril 2008 à 08:50 -0500, Anthony Liguori a écrit :
> Nguyen Anh Quynh wrote:
> > Hi,
> >
> > This should be submitted to upstream (but not to kvm-devel list), but
> > this is only the test code that I want to quickly send out for
> > comments. In case it looks OK, I will send it to upstream later.
> >
> > Inspired by extboot and conversations with Anthony and HPA, this
> > linuxboot option ROM is a simple option ROM that intercepts int19 in
> > order to execute linux setup code. This approach eliminates the need
> > to manipulate the boot sector for this purpose.
> >
> > To test it, just load linux kernel with your KVM/QEMU image using
> > -kernel option in normal way.
> >
> > I succesfully compiled and tested it with kvm-66 on Ubuntu 7.10, guest
> > Ubuntu 8.04.
> >
>
> For the next rounds, could you actually rebase against upstream QEMU and
> submit to qemu-devel? One of Paul Brook's objections to extboot had
> historically been that it wasn't not easily sharable with other
> architectures. With a C version, it seems more reasonable now to do that.
Moreover add a binary version of the ROM in the pc-bios directory: it
avoids to have a cross-compiler to build ROM on non-x86 architecture.
Regards,
Laurent
> Make sure you remove all the old linux boot code too within QEMU along
> with the -hda checks.
>
> Regards,
>
> Anthony Liguori
>
> > Thanks,
> > Quynh
> >
> >
> > # diffstat linuxboot1.diff
> > Makefile | 13 ++++-
> > linuxboot/Makefile | 40 +++++++++++++++
> > linuxboot/boot.S | 54 +++++++++++++++++++++
> > linuxboot/farvar.h | 130
> > +++++++++++++++++++++++++++++++++++++++++++++++++++
> > linuxboot/rom.c | 104 ++++++++++++++++++++++++++++++++++++++++
> > linuxboot/signrom |binary
> > linuxboot/signrom.c | 128
> > ++++++++++++++++++++++++++++++++++++++++++++++++++
> > linuxboot/util.h | 69 +++++++++++++++++++++++++++
> > qemu/Makefile | 3 -
> > qemu/Makefile.target | 2
> > qemu/hw/linuxboot.c | 39 +++++++++++++++
> > qemu/hw/pc.c | 22 +++++++-
> > qemu/hw/pc.h | 5 +
> > 13 files changed, 600 insertions(+), 9 deletions(-)
> >
>
>
>
>
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[Qemu-devel] Re: [RFC] linuxboot Option ROM for Linux kernel booting, Anthony Liguori, 2008/04/22