Re: [Qemu-devel] [PATCH 0/4] Add multiboot support (x86) v3

[Anthony Liguori <anthony@codemonkey.ws>]

Alexander Graf wrote:
> This patch implements support for Multiboot on x86 for -kernel.
> Multiboot is a "new" approach to get rid of different bootloaders, providing
> a unified interface for the kernel. It supports command line options and
> kernel modules.
>
> The two probably best known projects using multiboot are Xen and GNU Hurd.
>
> This implementation should be mostly feature-complete. It is missing VBE
> extensions, but as no system uses them currently it does not really hurt.
>
> To use multiboot, specify the kernel as -kernel option. Modules should be given
> as -initrd options, seperated by a comma (,). -append also works.
>
> Please bear in mind that grub also does gzip decompression, which qemu does
> not do yet. To run existing images, please ungzip them first.
>
> The guest multiboot loader code is implemented as option rom using int 19.
> Parts of the work are based on efforts by Rene Rebe, who originally ported
> my code to int 19.
>
> Also, Kevin Wolf helped a lot whenever I had a new version of this patch
> around.
>
> v2 addresses the fw_cfg comments from Blue Swirl
> v3 makes things work on kvm and addresses avi's comments
>   

For v4, can you automatically build and use multiboot.bin given that we 
have the right tool chain (i386 or x86_64 host).

This is the direction I'd like to go in for all of the ROMs.

Regards,

Anthony Liguori

> Alexander Graf (4):
>   Change bochs bios init order
>   Expose fw_cfg v2
>   Multiboot support v3
>   Multiboot build system
>
>  hw/pc.c                       |  243 ++++++++++++++++++++++++++++++++++++++---
>  pc-bios/multiboot/Makefile    |   41 +++++++
>  pc-bios/multiboot/multiboot.S |  209 +++++++++++++++++++++++++++++++++++
>  pc-bios/multiboot/signrom.c   |   79 +++++++++++++
>  4 files changed, 557 insertions(+), 15 deletions(-)
>  create mode 100644 pc-bios/multiboot/Makefile
>  create mode 100644 pc-bios/multiboot/multiboot.S
>  create mode 100644 pc-bios/multiboot/signrom.c
>
>
>
>