diff options
Diffstat (limited to 'config/grub/default/config/payload')
| -rw-r--r-- | config/grub/default/config/payload | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/config/grub/default/config/payload b/config/grub/default/config/payload new file mode 100644 index 00000000..cdd6c0f0 --- /dev/null +++ b/config/grub/default/config/payload @@ -0,0 +1,272 @@ +# SPDX-License-Identifier: GPL-3.0-or-later +# Copyright (C) 2014-2016,2020-2021,2023-2024 Leah Rowe <leah@libreboot.org> +# Copyright (C) 2015 Klemens Nanni <contact@autoboot.org> + +set prefix=(memdisk)/boot/grub + +insmod at_keyboard +insmod usb_keyboard +insmod nativedisk +insmod ehci +insmod ohci +insmod uhci +insmod usb +insmod usbms +insmod regexp + +terminal_input --append at_keyboard +terminal_input --append usb_keyboard +terminal_output --append cbmemc + +# User interface overrides wherever "keystatus" is supported +# Keep SHIFT key pressed before powering on to disable graphics +if keystatus --shift; then + terminal_output --append vga_text +else + gfxpayload=keep + terminal_output --append gfxterm + + for dt in cbfsdisk memdisk; do + for it in png jpg; do + if [ -f (${dt})/background.${it} ]; then + insmod ${it} + background_image (${dt})/background.${it} + fi + done + done +fi + +# Keep CTRL pressed to enable default serial terminal (COM1 or the like) +if keystatus --ctrl; then + serial + terminal_input --append serial + terminal_output --append serial +fi + +# Keep ALT pressed to enable spkmodem +if keystatus --alt; then + terminal_output --append spkmodem +fi + + +set default="0" +if [ -f (cbfsdisk)/timeout.cfg ]; then + source (cbfsdisk)/timeout.cfg +else + set timeout=8 +fi +set grub_scan_disk="ahci ata" +if [ -f (cbfsdisk)/scan.cfg ]; then + source (cbfsdisk)/scan.cfg +fi + +if [ -f (cbfsdisk)/keymap.gkb ]; then + keymap (cbfsdisk)/keymap.gkb +fi + +function really_try_user_config { + set root="${1}" + + if [ -f /"${2}"/grub.cfg ]; then + unset superusers + configfile /"${2}"/grub.cfg + fi +} + +function try_user_config { + # The @/... entries are for cases where the BTRFS filesystem is being used + for dir in grub boot/grub @/grub @/boot/grub grub2 boot/grub2 @/grub2 @/boot/grub2 boot @/boot; do + really_try_user_config "${1}" "${dir}" + done + for dir in ubuntu debian redhat; do + really_try_user_config "${1}" "EFI/${dir}" + done +} +function search_grub { + echo -n "Attempting to load grub.cfg from '${1}' devices" + for i in 0 1 2 3 4 5 6 7 8; do + for part in 1 2 3 4 5 6 7 8 9 10 11 12; do + if [ "${1}" != "nvme" ]; then + try_user_config "(${1}${i},${part})" + fi + done + if [ "${1}" != "nvme" ]; then + # raw devices e.g. (ahci0) instead of (ahci0,1) + try_user_config "(${1}${i})" + fi + done + echo # Insert newline +} + +function try_isolinux_config { + set root="${1}" + for dir in '' /boot /EFI /@ /@/boot; do + if [ -f "${dir}"/isolinux/isolinux.cfg ]; then + syslinux_configfile -i "${dir}"/isolinux/isolinux.cfg + elif [ -f "${dir}"/syslinux/syslinux.cfg ]; then + syslinux_configfile -s "${dir}"/syslinux/syslinux.cfg + elif [ -f "${dir}"/syslinux/extlinux.conf ]; then + syslinux_configfile -s "${dir}"/syslinux/extlinux.conf + elif [ -f "${dir}"/extlinux/extlinux.conf ]; then + syslinux_configfile -s "${dir}"/extlinux/extlinux.conf + fi + done +} +function search_isolinux { + echo "\nAttempting to parse iso/sys/extlinux config from '${1}' devices" + for i in 0 1 2 3 4 5 6 7 8; do + for part in 1 2 3 4 5 6 7 8 9 10 11 12; do + if [ "${1}" != "nvme" ]; then + try_isolinux_config "(${1}${i},${part})" + fi + done + if [ "${1}" != "nvme" ]; then + # raw devices e.g. (usb0) instead of (usb0,1) + try_isolinux_config "(${1}${i})" + fi + done + echo # Insert newline +} +function try_bootcfg { + try_user_config "${1}" + try_isolinux_config "${1}" +} +function search_bootcfg { + search_grub "${1}" + search_isolinux "${1}" +} +menuentry 'Load Operating System (incl. fully encrypted disks) [o]' --hotkey='o' { + + for grub_disk in ${grub_scan_disk}; do + search_bootcfg ${grub_disk} + done + + # grub device enumeration is very slow, so checks are hardcoded + + # TODO: add more strings, based on what distros set up when + # the user select auto-partitioning on those installers + lvmvol="lvm/grubcrypt-bootvol lvm/grubcrypt-rootvol" + + raidvol="md/0 md/1 md/2 md/3 md/4 md/5 md/6 md/7 md/8 md/9" + + # in practise, doing multiple redundant checks is perfectly fast and + # TODO: optimize grub itself, and use */? here for everything + + for vol in ${lvmvol} ${raidvol} ; do + try_bootcfg "${vol}" + done + + unset bootdev + for grub_disk in ${grub_scan_disk}; do + for i in 0 1 2 3 4 5 6 7 8; do + for part in 1 2 3 4 5 6 7 8 9 10 11 12; do + if [ "${grub_disk}" = "ahci" ]; then + bootdev="${bootdev} (ahci${i},${part})" + elif [ "${grub_disk}" = "ata" ]; then + bootdev="${bootdev} (ata${i},${part})" + fi + done + done + done + + set pager=0 + echo -n "Attempting to unlock encrypted volumes" + for dev in ${bootdev} ${lvmvol} ${raidvol}; do + if cryptomount "${dev}" ; then break ; fi + done + set pager=1 + echo + + # after cryptomount, lvm volumes might be available + for vol in ${lvmvol}; do + try_bootcfg "${vol}" + done + + search_bootcfg crypto + + for vol in lvm/* ; do + try_bootcfg "${vol}" + done + + true # Prevent pager requiring to accept each line instead of whole screen +} + +menuentry 'Search for GRUB/SYSLINUX/EXTLINUX/ISOLINUX on USB [s]' --hotkey='s' { + search_bootcfg usb +} +menuentry 'Search for GRUB/SYSLINUX/EXTLINUX/ISOLINUX on AHCI [a]' --hotkey='a' { + search_bootcfg ahci +} +menuentry 'Search for GRUB/SYSLINUX/EXTLINUX/ISOLINUX on ATA/IDE [d]' --hotkey='d' { + search_bootcfg ata +} +if [ -f (cbfsdisk)/grub.cfg ]; then +menuentry 'Load configuration (grub.cfg) in CBFS [t]' --hotkey='t' { + set root='(cbfsdisk)' + if [ -f /grub.cfg ]; then + configfile /grub.cfg + fi +} +fi +if [ -f (cbfsdisk)/grubtest.cfg ]; then +menuentry 'Load test configuration (grubtest.cfg) inside of CBFS [t]' --hotkey='t' { + set root='(cbfsdisk)' + if [ -f /grubtest.cfg ]; then + configfile /grubtest.cfg + fi +} +fi +if [ -f (cbfsdisk)/seabios.elf ]; then +menuentry 'Load SeaBIOS (payload) [b]' --hotkey='b' { + set root='cbfsdisk' + chainloader /seabios.elf +} +fi +if [ -f (cbfsdisk)/img/grub2 ]; then +menuentry 'Return to SeaBIOS [b]' --hotkey='b' { + set root='cbfsdisk' + chainloader /fallback/payload +} +fi +menuentry 'Poweroff [p]' --hotkey='p' { + halt +} +menuentry 'Reboot [r]' --hotkey='r' { + reboot +} +if [ -f (cbfsdisk)/img/memtest ]; then +menuentry 'Load MemTest86+ [m]' --hotkey='m' { + set root='cbfsdisk' + chainloader /img/memtest +} +fi + +submenu 'Other [z]' --hotkey='z' { + menuentry 'Enable default serial terminal [s]' --hotkey='s' { + serial + terminal_input --append serial + terminal_output --append serial + } + + menuentry 'Disable default serial terminal' { + terminal_input --remove serial + terminal_output --remove serial + } + + menuentry 'Enable gfxterm' { + terminal_output --append gfxterm + terminal_output --remove vga_text + } + menuentry 'Disable gfxterm [g]' --hotkey='g' { + terminal_output --remove gfxterm + terminal_output --append vga_text + } + + menuentry 'Enable spkmodem [a]' --hotkey='a' { + terminal_output --append spkmodem + } + + menuentry 'Disable spkmodem [z]' --hotkey='z' { + terminal_output --remove spkmodem + } +} |