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|
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
gfxpayload=keep
terminal_output --append gfxterm
if [ -f (cbfsdisk)/background.png ]; then
insmod png
background_image (cbfsdisk)/background.png
elif [ -f (cbfsdisk)/background.jpg ]; then
insmod jpeg
background_image (cbfsdisk)/background.jpg
fi
set default="0"
set timeout=30
set pager=1
set grub_scan_disk="both"
keymap usqwerty
function try_user_config {
set root="${1}"
for dir in boot grub grub2 boot/grub boot/grub2; do
for name in '' osboot_ autoboot_ libreboot_ coreboot_; do
if [ -f /"${dir}"/"${name}"grub.cfg ]; then
unset superusers
configfile /"${dir}"/"${name}"grub.cfg
fi
done
done
}
function search_grub {
echo -n "Attempting to load grub.cfg from '${1}' devices"
for i in 0 1 2 3 4 5 6 7 8 9 10 11; do
for part in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20; do
try_user_config "(${1}${i},${part})"
done
# raw devices e.g. (ahci0) instead of (ahci0,1)
try_user_config "(${1}${i})"
done
echo # Insert newline
}
function try_isolinux_config {
set root="${1}"
for dir in '' /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
fi
done
}
function search_isolinux {
echo "\nAttempting to parse isolinux/syslinux config from '${1}' devices"
for i in 0 1 2 3 4 5 6 7 8 9 10 11; do
for part in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20; do
try_isolinux_config "(${1}${i},${part})"
done
# raw devices e.g. (usb0) instead of (usb0,1)
try_isolinux_config "(${1}${i})"
done
echo # Insert newline
}
menuentry 'Load Operating System (incl. fully encrypted disks) [o]' --hotkey='o' {
if [ "${grub_scan_disk}" != "ata" ]; then
search_grub ahci
fi
if [ "${grub_scan_disk}" != "ahci" ]; then
search_grub ata
fi
# 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/matrix-bootvol lvm/matrix-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} ${raidvol} ; do
try_user_config "${vol}"
done
unset ahcidev
unset atadev
for i in 11 10 9 8 7 6 5 4 3 2 1 0; do
for part in 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1; do
if [ "${grub_scan_disk}" != "ata" ]; then
ahcidev="(ahci${i},${part}) ${ahcidev}"
fi
if [ "${grub_scan_disk}" != "ahci" ]; then
atadev="(ata${i},${part}) ${atadev}"
fi
done
done
set pager=0
echo -n "Attempting to unlock encrypted volumes"
for dev in ${ahcidev} ${atadev} ${lvmvol} ${raidvol}; do
if cryptomount "${dev}" ; then break ; fi
done
set pager=1
echo
# after cryptomount, lvm volumes might be available
for vol in ${lvmvol}; do
try_user_config "${vol}"
done
search_grub crypto
if [ "${grub_scan_disk}" != "ata" ]; then
# Last resort, if all else fails
set root=ahci0,1
for p in / /boot/; do
if [ -f "${p}vmlinuz" ]; then
linux ${p}vmlinuz root=/dev/sda1 rw
if [ -f "${p}initrd.img" ]; then
initrd ${p}initrd.img
fi
fi
done
fi
if [ "${grub_scan_disk}" != "ahci" ]; then
# Last resort (for setups that use IDE instead of SATA)
set root=ata0,1
for p in / /boot/; do
if [ -f "${p}vmlinuz" ]; then
linux ${p}vmlinuz root=/dev/sda1 rw
if [ -f "${p}initrd.img" ]; then
initrd ${p}initrd.img
fi
fi
done
fi
true # Prevent pager requiring to accept each line instead of whole screen
}
menuentry 'Search ISOLINUX menu (AHCI) [a]' --hotkey='a' {
search_isolinux ahci
}
menuentry 'Search ISOLINUX menu (USB) [u]' --hotkey='u' {
search_isolinux usb
}
menuentry 'Search ISOLINUX menu (ATA/IDE) [d]' --hotkey='d' {
search_isolinux ata
}
menuentry 'Load test configuration (grubtest.cfg) inside of CBFS [t]' --hotkey='t' {
set root='(cbfsdisk)'
if [ -f /grubtest.cfg ]; then
configfile /grubtest.cfg
fi
}
menuentry 'Search for GRUB2 configuration on external media [s]' --hotkey='s' {
search_grub usb
}
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
|
