[v4,0/5] pvh: add new PVH option rom

Message

Stefano Garzarella Jan. 17, 2019, 9:02 a.m. UTC

This patch series is based on "[PATCH v3 0/4] QEMU changes to do PVH boot" and
provides a PVH option rom that can be used with SeaBIOS to boot uncompressed
kernel using the x86/HVM direct boot ABI.

Patches 1 and 2 are to prepare the PVH option rom, moving common functions in
the new headers.  Patch 3 adds the new PVH option rom. Patch 4 uses it when we
are booting an uncompressed kernel using the x86/HVM direct boot ABI. Patch 5
adds the support of loading the initrd in the PVH option rom.

Based-on: <[e-mail]>

Changes in v4:
- addressed comments by Paolo:
  - Patch 2: linuxboot_dma.c: moved includes after the asm block to avoid
    compiler error
  - Patch 3: Makefile: fixed pvh.img rule

Changes in v3:
- added R-b's
- added Patch 5 to support initrd
- addressed comments by Eric and Liam:
    - Patch 3: comments by Liam
    - Patch 4: moved Based-on tag in the cover letter (by Eric)
- Patch 3: added pc-bios/pvh.bin binary in the commit

Changes in v2:
- addressed comments by Stefan and Eric:
  - Patch 2: moved inludes on top of linuxboot_dma.c and add <stdint.h> in
    optrom.h
  - Patch 4: added check of pvh.bin in xen_load_linux()
- modified commit message of patch 2 to explain better the patch

Stefano Garzarella (5):
  linuxboot_dma: remove duplicate definitions of FW_CFG
  linuxboot_dma: move common functions in a new header
  optionrom: add new PVH option rom
  hw/i386/pc: use PVH option rom
  optionrom/pvh: load initrd from fw_cfg

 Makefile                          |   2 +-
 hw/i386/pc.c                      |   5 +
 pc-bios/optionrom/Makefile        |   5 +-
 pc-bios/optionrom/linuxboot_dma.c | 114 +++--------------
 pc-bios/optionrom/optrom.h        | 110 ++++++++++++++++
 pc-bios/optionrom/optrom_fw_cfg.h |  92 ++++++++++++++
 pc-bios/optionrom/pvh.S           | 200 ++++++++++++++++++++++++++++++
 pc-bios/optionrom/pvh_main.c      | 133 ++++++++++++++++++++
 pc-bios/pvh.bin                   | Bin 0 -> 1536 bytes
 9 files changed, 564 insertions(+), 97 deletions(-)
 create mode 100644 pc-bios/optionrom/optrom.h
 create mode 100644 pc-bios/optionrom/optrom_fw_cfg.h
 create mode 100644 pc-bios/optionrom/pvh.S
 create mode 100644 pc-bios/optionrom/pvh_main.c
 create mode 100644 pc-bios/pvh.bin