Install the boot splash theme and set up GRUB without Limine
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+128
-10
@@ -3,7 +3,9 @@
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# blob-boot - boot splash and bootloader management.
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#
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# blob-boot [image] Apply a Plymouth boot splash image (default action)
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# blob-boot grub Migrate from Limine back to GRUB, detecting every OS
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# blob-boot grub Install GRUB and detect every other OS on the machine.
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# Migrates off Limine when it is there; on a machine
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# that never had it, only GRUB is installed
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# --purge removes Limine in the same run instead of
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# keeping it for one fallback boot
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# blob-boot detect Rescan for other operating systems, rebuild the menu
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@@ -16,8 +18,12 @@
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set -euo pipefail
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DEFAULT_IMAGE="$HOME/Documents/dotfiles/branding/boot_flash.png"
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PLYMOUTH_LOGO="/usr/share/plymouth/themes/blob/logo.png"
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BLOB_PATH="${BLOB_PATH:-$HOME/.local/share/blob}"
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DEFAULT_IMAGE="$BLOB_PATH/branding/boot_flash.png"
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THEME_SOURCE="$BLOB_PATH/default/plymouth"
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THEME_DIR="/usr/share/plymouth/themes/blob"
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PLYMOUTH_LOGO="$THEME_DIR/logo.png"
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MKINITCPIO_DROPIN="/etc/mkinitcpio.conf.d/blob-plymouth.conf"
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log() { printf '\n\033[1;36m==> %s\033[0m\n' "$*"; }
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info() { printf ' %s\n' "$*"; }
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@@ -43,17 +49,24 @@ apply_splash() {
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fi
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[ -f "$image_path" ] || die "File '$image_path' does not exist."
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[ -d "$(dirname "$PLYMOUTH_LOGO")" ] || die "Plymouth blob theme is not installed."
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command -v plymouth-set-default-theme >/dev/null \
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|| die "The 'plymouth' package is not installed. Install it with: sudo pacman -S plymouth"
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log "Applying boot splash image: $image_path"
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require_sudo
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sudo cp "$image_path" "$PLYMOUTH_LOGO"
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sudo chmod 644 "$PLYMOUTH_LOGO"
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install_theme "$image_path"
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install_initramfs_hook
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enable_plymouth_units
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log "Setting the default Plymouth theme"
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sudo plymouth-set-default-theme blob
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log "Rebuilding initramfs"
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rebuild_initramfs
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report_kernel_cmdline
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# Under GRUB the menu references the initramfs by path, so it only needs
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# regenerating if the file set changed - but it is cheap and keeps the menu
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# honest after a kernel or os-prober change.
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@@ -65,6 +78,80 @@ apply_splash() {
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ok "Boot splash successfully updated!"
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}
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install_theme() {
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local image_path=$1
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[ -d "$THEME_SOURCE" ] || die "Theme source '$THEME_SOURCE' is missing from the checkout."
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sudo install -d -m 0755 "$THEME_DIR"
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sudo install -m 0644 "$THEME_SOURCE/blob.plymouth" "$THEME_DIR/blob.plymouth"
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sudo install -m 0644 "$THEME_SOURCE/blob.script" "$THEME_DIR/blob.script"
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sudo install -m 0644 "$image_path" "$PLYMOUTH_LOGO"
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info "installed the blob theme to $THEME_DIR"
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}
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# A drop-in rather than an edit of HOOKS: mkinitcpio.conf.d is sourced after
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# the main config, so the hook can be inserted without rewriting a line the
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# user or another tool owns. plymouth has to come after udev, which starts the
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# devices it draws on.
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install_initramfs_hook() {
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sudo install -d -m 0755 "$(dirname "$MKINITCPIO_DROPIN")"
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sudo tee "$MKINITCPIO_DROPIN" >/dev/null <<'DROPIN'
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# Written by blob-boot. Adds the plymouth hook after udev, once.
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if [[ " ${HOOKS[*]} " != *" plymouth "* ]]; then
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_hooks=()
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for _hook in "${HOOKS[@]}"; do
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_hooks+=("$_hook")
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[[ $_hook == "udev" || $_hook == "systemd" ]] && _hooks+=("plymouth")
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done
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HOOKS=("${_hooks[@]}")
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unset _hooks _hook
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fi
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DROPIN
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info "wrote $MKINITCPIO_DROPIN"
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}
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# install.sh masks these so an unconfigured plymouth cannot hold the console and
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# leave the machine with no greeter and no TTY. A configured one needs them: if
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# plymouth-quit-wait stays masked the splash never hands the display back.
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enable_plymouth_units() {
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local unit
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for unit in plymouth-start.service plymouth-quit-wait.service; do
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if [ "$(systemctl is-enabled "$unit" 2>/dev/null)" = "masked" ]; then
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sudo systemctl unmask "$unit" >/dev/null
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info "unmasked $unit"
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fi
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done
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}
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# plymouth only draws when the kernel was told to be quiet and to splash. The
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# bootloader owns that line, so report rather than rewrite anything but GRUB's.
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report_kernel_cmdline() {
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local params="quiet splash vt.global_cursor_default=0"
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if grep -qw splash /proc/cmdline; then
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info "kernel command line already carries 'splash'"
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return 0
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fi
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log "One step left: the kernel command line"
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if using_grub; then
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warn "GRUB is in charge. Add to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub:"
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warn " $params"
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warn "then: sudo grub-mkconfig -o /boot/grub/grub.cfg"
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elif [ -f /boot/limine.conf ]; then
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warn "Limine is in charge. Add to the cmdline in /boot/limine.conf:"
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warn " $params"
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elif [ -d /boot/loader/entries ]; then
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warn "systemd-boot is in charge. Add to the options line in /boot/loader/entries/*.conf:"
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warn " $params"
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else
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warn "Add these to your bootloader's kernel command line:"
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warn " $params"
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fi
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warn "Without them the splash is drawn over by kernel messages."
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}
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# Call mkinitcpio directly: limine-mkinitcpio-hook installs a wrapper at
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# /usr/local/bin/mkinitcpio that stops to ask whether to rebuild Limine
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# entries, which is useless in a script. While Limine is still the active
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@@ -82,6 +169,26 @@ using_grub() {
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[ -f /boot/grub/grub.cfg ] && [ -f /boot/EFI/GRUB/grubx64.efi ]
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}
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# Everything Limine-specific below is skipped on a machine that never had it:
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# reclaiming its space, removing its hooks, and rewriting the mkinitcpio preset
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# its hooks needed. Rewriting that preset elsewhere would drop the fallback
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# initramfs for no reason.
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limine_present() {
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pacman -Qq limine &>/dev/null || [ -f /boot/limine.conf ] || [ -d /boot/EFI/limine ]
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}
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install_grub_packages() {
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local missing=()
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command -v grub-install >/dev/null || missing+=(grub)
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command -v os-prober >/dev/null || missing+=(os-prober)
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(( ${#missing[@]} == 0 )) && return 0
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log "Installing ${missing[*]}"
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sudo pacman -S --needed --noconfirm "${missing[@]}" \
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|| die "Could not install: ${missing[*]}"
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}
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# --------------------------------------------------------------------------
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# Limine -> GRUB migration
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# --------------------------------------------------------------------------
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@@ -92,10 +199,9 @@ migrate_to_grub() {
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[ -d /sys/firmware/efi ] || die "Not booted in UEFI mode; this script assumes UEFI."
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mountpoint -q /boot || die "/boot is not mounted."
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command -v grub-install >/dev/null || die "The 'grub' package is not installed."
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command -v os-prober >/dev/null || die "The 'os-prober' package is not installed."
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require_sudo
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install_grub_packages
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local machine_id esp_uuid backup
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machine_id=$(</etc/machine-id)
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@@ -111,8 +217,14 @@ migrate_to_grub() {
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sudo efibootmgr -v | sudo tee "$backup/efibootmgr-before.txt" >/dev/null 2>&1 || true
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info "saved."
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reclaim_esp_space "$machine_id" "$backup"
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restore_standard_initramfs
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if limine_present; then
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reclaim_esp_space "$machine_id" "$backup"
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restore_standard_initramfs
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else
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info "Limine is not installed; leaving the initramfs layout alone"
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log "Building the initramfs"
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rebuild_initramfs
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fi
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configure_grub_scripts
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install_grub "$esp_uuid"
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fix_failing_boot_units
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@@ -529,6 +641,12 @@ set_boot_order() {
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# Delete every trace of Limine and hand its EFI fallback path to GRUB.
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purge_limine() {
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if ! limine_present; then
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log "Claiming the removable EFI fallback path for GRUB"
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sudo grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=GRUB --removable --recheck
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return 0
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fi
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log "Removing Limine"
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drop_limine_pkgs limine limine-mkinitcpio-hook limine-snapper-sync
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