change version to 2.02-2ubuntu8.15 (UNRELEASED)
Make the linux command in EFI grub always try EFI handover; thanks
to Chris Coulson for the patches (LP: #1864533)
ubuntu: Update the linux boot protocol version check.
The EFI implementation of grub_cmd_linux makes use of xloadflags which was
introduced in to version 2.12 of the kernel's boot protocol, so update the
check accordingly.
ubuntu: Make the linux command in EFI grub always try EFI handover
The previous implementation only boots via the EFI handover protocol when
secure boot is enabled. This means that disabling secure boot breaks some
features that depend on the kernel being booted via the EFI handover entry
point, such as retrieval of the TCG event log.
Update the linux command to always attempt to defer to linuxefi in EFI grub
builds, regardless of whether secure boot is enabled or not. This also allows
a fallback to the non-EFI handover path on kernels that don't support it, but
only if secure boot is disabled.
efi/fdt: Set address/size cells to 2 for empty tree
When booting an arm* system on UEFI with an empty device tree (currently
only when hardware description comes from ACPI), we don't currently set
default to 1 cell (32 bits).
Set both of these properties, to 2 cells (64 bits), to resolve issues
with kexec on some platforms.
This change corresponds with linux kernel commit ae8a442dfdc4
("efi/libstub/arm*: Set default address and size cells values for an empty dtb")
and ensures booting through grub does not behave differently from booting
the stub loader directly.
