233 lines
6.0 KiB
INI
233 lines
6.0 KiB
INI
# shellcheck disable=SC2148 # Does not check for #!
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# Copyright (C) 2013, 2024 Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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# Copyright (C) 2013-2016, 2020-2021 Leah Rowe <leah@libreboot.org>
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# Copyright (C) 2021 Vitali64 <vitali64pmemail@protonmail.com>
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# Copyright (C) 2023 Adrien 'neox' Bourmault <neox@gnu.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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# shellcheck disable=SC2121 # warn against set var=val
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# shellcheck disable=SC1036 # error: invalid '('
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# shellcheck disable=SC1088 # error: invalid uses of parentheses
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set prefix=(memdisk)/boot/grub
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insmod at_keyboard
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insmod usb_keyboard
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insmod nativedisk
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insmod ehci
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insmod ohci
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insmod uhci
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insmod usb
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insmod usbms
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insmod regexp
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terminal_input --append at_keyboard
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terminal_input --append usb_keyboard
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terminal_output --append cbmemc
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gfxpayload=keep
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terminal_output --append gfxterm
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if [ -f (cbfsdisk)/background.png ]; then
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insmod png
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background_image (cbfsdisk)/background.png
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elif [ -f (cbfsdisk)/background.jpg ]; then
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insmod jpeg
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background_image (cbfsdisk)/background.jpg
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fi
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set default="0"
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set timeout=10
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set pager=1
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set grub_scan_disk="both"
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keymap usqwerty
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function try_user_config {
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set root="${1}"
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for dir in boot grub grub2 boot/grub boot/grub2; do
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for name in '' gnuboot_ osboot_ autoboot_ coreboot_; do
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if [ -f /"${dir}"/"${name}"grub.cfg ]; then
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unset superusers
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configfile /"${dir}"/"${name}"grub.cfg
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fi
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done
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done
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}
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function search_grub {
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echo -n "Attempting to load grub.cfg from '${1}' devices"
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for i in 0 1 2 3 4 5 6 7 8 9 10 11; do
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for part in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20; do
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try_user_config "(${1}${i},${part})"
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done
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# raw devices e.g. (ahci0) instead of (ahci0,1)
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try_user_config "(${1}${i})"
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done
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echo # Insert newline
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}
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function try_isolinux_config {
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set root="${1}"
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for dir in '' /boot; do
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if [ -f "${dir}"/isolinux/isolinux.cfg ]; then
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syslinux_configfile -i "${dir}"/isolinux/isolinux.cfg
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elif [ -f "${dir}"/syslinux/syslinux.cfg ]; then
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syslinux_configfile -s "${dir}"/syslinux/syslinux.cfg
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fi
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done
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}
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function search_isolinux {
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echo "\nAttempting to parse isolinux/syslinux config from '${1}' devices"
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for i in 0 1 2 3 4 5 6 7 8 9 10 11; do
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for part in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20; do
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try_isolinux_config "(${1}${i},${part})"
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done
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# raw devices e.g. (usb0) instead of (usb0,1)
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try_isolinux_config "(${1}${i})"
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done
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echo # Insert newline
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}
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menuentry 'Load Operating System (incl. fully encrypted disks) [o]' --hotkey='o' {
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if [ "${grub_scan_disk}" != "ata" ]; then
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search_grub ahci
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fi
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if [ "${grub_scan_disk}" != "ahci" ]; then
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search_grub ata
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fi
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for device in (*) ; do
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if regexp "^\(lvm/" "${device}" ; then
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try_user_config "${device}"
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fi
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done
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raidvol="md/0 md/1 md/2 md/3 md/4 md/5 md/6 md/7 md/8 md/9"
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# in practise, doing multiple redundant checks is perfectly fast and
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# TODO: optimize grub itself, and use */? here for everything
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for vol in ${raidvol} ; do
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try_user_config "${vol}"
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done
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unset ahcidev
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unset atadev
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for i in 11 10 9 8 7 6 5 4 3 2 1 0; do
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for part in 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1; do
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if [ "${grub_scan_disk}" != "ata" ]; then
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ahcidev="(ahci${i},${part}) ${ahcidev}"
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fi
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if [ "${grub_scan_disk}" != "ahci" ]; then
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atadev="(ata${i},${part}) ${atadev}"
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fi
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done
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done
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set pager=0
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echo -n "Attempting to unlock encrypted volumes"
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for dev in ${ahcidev} ${atadev} ${raidvol}; do
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if cryptomount "${dev}" ; then break ; fi
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done
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for device in (*) ; do
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if regexp "^\(lvm/" "${device}" ; then
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if cryptomount "${device}" ; then break ; fi
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fi
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done
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set pager=1
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echo
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# after cryptomount, lvm volumes might be available
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for device in (*) ; do
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if regexp "^\(lvm/" "${device}" ; then
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try_user_config "${device}"
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fi
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done
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search_grub crypto
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if [ "${grub_scan_disk}" != "ata" ]; then
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# Last resort, if all else fails
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set root=ahci0,1
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for p in / /boot/; do
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if [ -f "${p}vmlinuz" ]; then
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linux ${p}vmlinuz root=/dev/sda1 rw
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if [ -f "${p}initrd.img" ]; then
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initrd ${p}initrd.img
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fi
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fi
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done
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fi
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if [ "${grub_scan_disk}" != "ahci" ]; then
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# Last resort (for setups that use IDE instead of SATA)
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set root=ata0,1
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for p in / /boot/; do
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if [ -f "${p}vmlinuz" ]; then
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linux ${p}vmlinuz root=/dev/sda1 rw
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if [ -f "${p}initrd.img" ]; then
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initrd ${p}initrd.img
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fi
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fi
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done
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fi
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true # Prevent pager requiring to accept each line instead of whole screen
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}
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menuentry 'Search ISOLINUX menu (AHCI) [a]' --hotkey='a' {
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search_isolinux ahci
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}
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menuentry 'Search ISOLINUX menu (USB) [u]' --hotkey='u' {
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search_isolinux usb
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}
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menuentry 'Search ISOLINUX menu (ATA/IDE) [d]' --hotkey='d' {
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search_isolinux ata
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}
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menuentry 'Load test configuration (grubtest.cfg) inside of CBFS [t]' --hotkey='t' {
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set root='(cbfsdisk)'
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if [ -f /grubtest.cfg ]; then
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configfile /grubtest.cfg
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fi
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}
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menuentry 'Search for GRUB2 configuration on external media [s]' --hotkey='s' {
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search_grub usb
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}
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if [ -f (cbfsdisk)/seabios.elf ]; then
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menuentry 'Load SeaBIOS (payload) [b]' --hotkey='b' {
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set root='cbfsdisk'
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chainloader /seabios.elf
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}
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fi
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if [ -f (cbfsdisk)/img/grub2 ]; then
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menuentry 'Return to SeaBIOS [b]' --hotkey='b' {
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set root='cbfsdisk'
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chainloader /fallback/payload
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}
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fi
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menuentry 'Poweroff [p]' --hotkey='p' {
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halt
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}
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menuentry 'Reboot [r]' --hotkey='r' {
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reboot
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}
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if [ -f (cbfsdisk)/img/memtest ]; then
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menuentry 'Load MemTest86+ [m]' --hotkey='m' {
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set root='cbfsdisk'
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chainloader /img/memtest
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}
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fi
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