[PATCH v3 0/4] arm64: Add Xen boot support (via fdt)

[fu.wei@linaro.org]

From: Fu Wei <fu.wei@linaro.org>

  - This adds support for the Xen boot on ARM specification for arm64.

  - Add and export some accessor functions of "loaded" flag and
    grub_linux_get_fdt function in include/grub/arm64/linux.h for xen boot.

  - Introduce xen_hypervisor, xen_linux, xen_initrd and xen_xsm
    to load different binaries for xen boot.
    Introduce xen_module to load common or custom module for xen boot.

  - This Xen boot support is a separated  module for aarch64,
    but reuse the existing code of devicetree in linux module.

  - Add the support of xen_hypervisor, xen_linux and xen_initrd
    in util/grub.d/20_linux_xen.in

  - Add the introduction of all xen boot commands in docs/grub.texi

  - The example of this support is <How to boot Xen with GRUB on AArch64 the Foundation FVP model>
    https://wiki.linaro.org/LEG/Engineering/Grub2/Xen_booting_on_Foundation_FVP_model_by_GRUB

Changelog:
v3: create separate module for xen boot: xen_boot
    create separate commands for different types of module
    delete order-dependent for commands of xen module
    simplify the code

v2: remove the patches which have been accepted.
    according to Vladimir's suggestion, change the command manes
    and relevant code:
        multiboot-->xen_hypervisor
        module-->xen_module
    improve the option parsing support for xen_hypervisor/xen_module commands.
    add a patch for adding xen_hypervisor/xen_module support
    in util/grub.d/20_linux_xen.in.
    update docs/grub.texi patch for the new command names.

v1: The first version upstream patchset to grub-devel mailing list


Fu Wei (4):
  arm64: Add and export some accessor functions for xen boot
  arm64: Add xen_boot module file
  * util/grub.d/20_linux_xen.in: Add support of the XEN boot on aarch64
  arm64: Add the introduction of xen boot commands in docs/grub.texi

 docs/grub.texi                    |  56 ++++
 grub-core/Makefile.core.def       |   7 +
 grub-core/loader/arm64/linux.c    |  13 +
 grub-core/loader/arm64/xen_boot.c | 685 ++++++++++++++++++++++++++++++++++++++
 include/grub/arm64/linux.h        |   6 +-
 util/grub.d/20_linux_xen.in       |  16 +-
 6 files changed, 779 insertions(+), 4 deletions(-)
 create mode 100644 grub-core/loader/arm64/xen_boot.c

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1.8.3.1