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set prefix=(memdisk)/boot/grub
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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 usbserial_pl2303
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insmod usbserial_ftdi
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insmod usbserial_usbdebug
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# Serial and keyboard configuration, very important.
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serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1
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terminal_input --append serial
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terminal_output --append serial
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terminal_input --append at_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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|
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# Default to first option, automatically boot after 1 second
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set default="0"
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set timeout=5
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|
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# This is useful when using 'cat' on long files on GRUB terminal
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set pager=1
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insmod jpeg
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insmod png
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background_image (cbfsdisk)/background.png
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loadfont (memdisk)/dejavusansmono.pf2
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|
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keymap frazerty
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function try_user_config {
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set root="${1}"
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for dir in boot grub grub2 boot/grub boot/grub2; do
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for name in '' autoboot_ libreboot_ coreboot_; do
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if [ -f /"${dir}"/"${name}"grub.cfg ]; then
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unset superusers
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configfile /"${dir}"/"${name}"grub.cfg
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fi
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done
|
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done
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}
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function search_grub {
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for i in 0 1; do
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# raw devices
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try_user_config "(${1}${i})"
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|
for part in 1 2 3 4 5; do
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# MBR/GPT partitions
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|
try_user_config "(${1}${i},${part})"
|
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done
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done
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}
|
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function try_isolinux_config {
|
|
set root="${1}"
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|
for dir in '' /boot; do
|
|
if [ -f "${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
|
|
syslinux_configfile -s "${dir}"/syslinux/syslinux.cfg
|
|
fi
|
|
done
|
|
}
|
|
function search_isolinux {
|
|
for i in 0 1; do
|
|
# raw devices
|
|
try_isolinux_config "(${1}${i})"
|
|
for part in 1 2 3 4 5; do
|
|
# MBR/GPT partitions
|
|
try_isolinux_config "(${1}${i},${part})"
|
|
done
|
|
done
|
|
}
|
|
menuentry 'Load Operating System (incl. fully encrypted disks) [o]' --hotkey='o' {
|
|
# GRUB2 handles (almost) every possible disk setup, but only the location of
|
|
# /boot is actually important since GRUB2 only loads the user's config.
|
|
|
|
# LVM, RAID, filesystems and encryption on both raw devices and partitions in
|
|
# all various combinations need to be supported. Since full disk encryption is
|
|
# possible with GRUB2 as payload and probably even used by most users, this
|
|
# configuration tries to load the operating system in the following way:
|
|
|
|
# 1. Look for user configuration on unencrypted devices first to avoid
|
|
# unnecessary decryption routines in the following order:
|
|
|
|
# 1) raw devices and MBR/GPT partitions
|
|
search_grub ahci
|
|
search_grub ata
|
|
# 2) LVM and RAID which might be used accross multiple devices
|
|
lvm="lvm/matrix-rootvol lvm/matrix-boot"
|
|
raid="md/0 md/1 md/2 md/3 md/4 md/5 md/6 md/7 md/8 md/9"
|
|
for vol in ${lvm} ${raid}; do
|
|
try_user_config "(${vol})"
|
|
done
|
|
# 2. In case no configuration could be found, try decrypting devices. Look
|
|
# on raw crypto devices as well as inside LVM volumes this time.
|
|
|
|
# The user will be prompted for a passphrase if a LUKS header was found.
|
|
for dev in ahci0 ata0 ${lvm}; do
|
|
cryptomount "(${dev})"
|
|
done
|
|
# 3) encrypted devices/partitions
|
|
for i in 0 1; do
|
|
for part in 1 2 3 4 5; do
|
|
for type in ahci ata; do
|
|
cryptomount "(${type}${i},${part})"
|
|
done
|
|
done
|
|
done
|
|
|
|
# 3) encrypted devices/partitions
|
|
search_grub crypto
|
|
# 4) LVM inside LUKS containers
|
|
for vol in ${lvm}; do
|
|
try_user_config "(${vol})"
|
|
done
|
|
|
|
# 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 ${p}initrd.img
|
|
fi
|
|
fi
|
|
done
|
|
|
|
# Last resort (for GA-G41-ES2L which uses IDE emulation mode for SATA)
|
|
set root=ata0,1
|
|
for p in / /boot/; do
|
|
if [ -f "${p}vmlinuz" ]; then
|
|
linux ${p}vmlinuz root=/dev/sda1 rw
|
|
if [ -f "${p}initrd.img" ]; then
|
|
initrd ${p}initrd.img
|
|
fi
|
|
fi
|
|
done
|
|
}
|
|
menuentry 'Search ISOLINUX menu (AHCI) [a]' --hotkey='a' {
|
|
search_isolinux ahci
|
|
}
|
|
menuentry 'Search ISOLINUX menu (USB) [u]' --hotkey='u' {
|
|
search_isolinux usb
|
|
}
|
|
menuentry 'Search ISOLINUX menu (CD/DVD) [d]' --hotkey='d' {
|
|
insmod ata
|
|
for dev in ata0 ata1 ata2 ata3 ahci1; do
|
|
try_isolinux_config "(${dev})"
|
|
done
|
|
}
|
|
menuentry 'Search for GRUB2 configuration on external media [s]' --hotkey='s' {
|
|
search_grub usb
|
|
}
|
|
menuentry 'Poweroff [p]' --hotkey='p' {
|
|
halt
|
|
}
|
|
menuentry 'Reboot [r]' --hotkey='r' {
|
|
reboot
|
|
}
|