[Xen-devel] [RFC PATCH v2 00/16] Load BIOS via toolstack instead of been embedded in hvmloader.

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

Hi all,

I've start to look at loading the BIOS and the ACPI tables via the
toolstack instead of having them embedded in the hvmloader binary. After
this patch series, hvmloader compilation would be indenpendant from SeaBIOS
and OVMF compilation.

Compare to the V1, this is now done via the struct hvm_start_info from
Roger's patch series "Introduce HVM without dm and new boot ABI".

Here is a general view of the few step to load the BIOS:
- libxl load the BIOS blob into it's memory and add it to struct
  xc_hvm_build_args.bios_module
- libxc load the blob into the guest memory and fill the struct
  hvm_start_info, with a cmdline which would contain the order in which the
  modules (bios, acpi_table) are loaded into the modlist.
- hvmloader read the addresses from the hvm_start_info, find out which
  module are which by reading the cmdline and copy the blob to the right
  place.

Right now, this patch series would only work for SeaBIOS and OVMF. I have
not look into what to do about qemu-xen-traditionnal and rombios.

A git tree can be found here:
git://xenbits.xen.org/people/aperard/xen-unstable.git
tag: hvmloader-with-separated-bios-v2

Regards,

Anthony PERARD (16):
  hvmloader: Fix scratch_alloc to avoid overlaps
  libxc: Load BIOS and ACPI table into guest memory
  configure: #define SEABIOS_PATH and OVMF_PATH
  firmware/makefile: install BIOS and ACPI blob ...
  libxl: Load guest BIOS from file
  libxl: Load guest ACPI table from file
  hvmloader: Grab the hvmlite info page and parse the cmdline
  hvmloader: Locate the BIOS blob
  hvmloader: Load SeaBIOS from hvm_start_info modules ...
  hvmloader: Load OVMF from modules
  hvmloader: No BIOS ROM image allowed to be compiled in
  hvmloader: Load ACPI tables from hvm_start_info module
  hvmloader/makefile: Compile out SeaBIOS and OVMF ROM blob
  hvmloader: Always build-in SeaBIOS and OVMF loader
  hvmloader: Compile out the qemu-xen ACPI tables
  hvmloader: do not depend on SEABIOS_PATH or OVMF_PATH ...

 .gitignore                             |   1 +
 tools/configure.ac                     |  12 +++-
 tools/firmware/Makefile                |  15 ++--
 tools/firmware/hvmloader/Makefile      |  32 ---------
 tools/firmware/hvmloader/acpi/Makefile |   8 ++-
 tools/firmware/hvmloader/config.h      |  11 +--
 tools/firmware/hvmloader/hvmloader.c   | 127 ++++++++++++++++++++++++++++-----
 tools/firmware/hvmloader/ovmf.c        |  34 ++++-----
 tools/firmware/hvmloader/seabios.c     |  33 ++++-----
 tools/firmware/hvmloader/util.c        |   2 +-
 tools/libxc/include/xc_dom.h           |   4 ++
 tools/libxc/xc_dom_hvmloader.c         |  44 +++++++++---
 tools/libxc/xc_dom_x86.c               |  90 +++++++++++++++++++++++
 tools/libxl/libxl_dom.c                |  83 +++++++++++++++++++++
 tools/libxl/libxl_types.idl            |   2 +
 tools/libxl/xl_cmdimpl.c               |  14 +++-
 16 files changed, 394 insertions(+), 118 deletions(-)

-- 
Anthony PERARD


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