Ricardo Pardini 6c232a1303 grub: add hooks, fix GRUB font & wallpaper, introduce grub-with-dtb extension
- introduce hooks `grub_early_config`, `grub_pre_install` and `grub_late_config`
  - what we see here is an extension that itself has hooks, that just works
- introduce extension `grub-with-dtb`, which
  - enables `grub` extension
  - requires `BOOT_FDT_FILE` to be set
  - includes `/etc/armbian-grub-with-dtb` with `BOOT_FDT_FILE=` in the bsp-cli
  - includes `/etc/kernel/postinst.d/armbian-grub-with-dtb` in the bsp-cli
     - which reads the above and creates links for `/boot/armbian-dtb-<version>` when deploying deb's
  - adds implementations of the hooks above to
    - replace the distro's `10_linux` with our own `09_linux_with_dtb`
      - which looks for `/boot/armbian-dtb-<version>`
    - forcibly run  `/etc/kernel/postinst.d/armbian-grub-with-dtb` during image build, since bsp-cli is installed after linux-image
- uefi-arm64: enable GRUB wallpaper by setting `UEFI_GRUB_TERMINAL=gfxterm`
- force GRUB_FONT so Ubuntu is not confused and gfxterm (incl wallpaper) finally works
2023-06-26 13:52:29 +02:00

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#
# SPDX-License-Identifier: GPL-2.0
#
# Copyright (c) 2013-2023 Igor Pecovnik, igor@armbian.com
#
# This file is a part of the Armbian Build Framework
# https://github.com/armbian/build/
#
# Important: LINUXFAMILY and ARCH are defined _before_ including the common family include
declare -g UEFI_GRUB_TERMINAL="gfxterm" # Use graphics in grub, for the Armbian wallpaper.
declare -g LINUXFAMILY="arm64"
declare -g ARCH="arm64"
source "${BASH_SOURCE%/*}/include/uefi_common.inc"
enable_extension "grub"