- This multiboot support is built into linux module for aarch64.
- The implementation for Xen is following <Multiboot on ARM Specification>:
http://wiki.xen.org/wiki/Xen_ARM_with_Virtualization_Extensions/Multiboot
and xen/docs/misc/arm/device-tree/booting.txt in Xen source code.
- 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
- This adds support for the Xen Multiboot on ARM specification for arm64,
enabling config file portability across the architectures.
- The multiboot command is currently x86-only, so reusing these command names
should not conflict with any future additions of ARM support to multiboot2.
- The reason of adding this functionality to the existing "linux" module
rather than "multiboot(2)"
(1)multiboot is x86 only
(2)Multiboot is added to "linux" module because it reuses existing code.
- Some changes in original linux module code
Move some #define from grub-core/loader/arm64/linux.c to
include/grub/arm64/linux.h
Make some shared functions for multiboot.c
Remove "loaded" checking in the grub_cmd_devicetree of linux.c
- Add grub_fdt_set_reg64 macro into fdt.h header file for inserting "reg"
properiy,
while #address-cells = <0x2> and #size-cells = <0x2>
- Add the introduction of multiboot/module command in docs/grub.texi
This multiboot support will be built in linux module for aarch64,
and can not be used alone.
docs/grub.texi | 10 +
grub-core/Makefile.core.def | 1 +
grub-core/loader/arm64/linux.c | 72 ++---
grub-core/loader/arm64/multiboot.c | 593 +++++++++++++++++++++++++++++++++++++
include/grub/arm64/linux.h | 11 +
include/grub/arm64/multiboot.h | 115 +++++++
include/grub/fdt.h | 12 +
7 files changed, 778 insertions(+), 36 deletions(-)
create mode 100644 grub-core/loader/arm64/multiboot.c
create mode 100644 include/grub/arm64/multiboot.h
Signed-off-by: Fu Wei <fu....@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindh...@linaro.org>
--
1.8.3.1
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