diff options
Diffstat (limited to 'grub.cfg')
| -rw-r--r-- | grub.cfg | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/grub.cfg b/grub.cfg new file mode 100644 index 0000000..ca45ec2 --- /dev/null +++ b/grub.cfg @@ -0,0 +1,166 @@ +set prefix=(memdisk)/boot/grub + +insmod nativedisk +insmod ehci +insmod ohci +insmod uhci +insmod usb +insmod usbms +insmod usbserial_pl2303 +insmod usbserial_ftdi +insmod usbserial_usbdebug + +# Serial and keyboard configuration, very important. +serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1 +terminal_input --append serial +terminal_output --append serial +terminal_input --append at_keyboard +terminal_output --append cbmemc + +gfxpayload=keep +terminal_output --append gfxterm + +# Default to first option, automatically boot after 1 second +set default="0" +set timeout=5 + +# This is useful when using 'cat' on long files on GRUB terminal +set pager=1 +insmod jpeg + +background_image (cbfsdisk)/background.jpg +loadfont (memdisk)/dejavusansmono.pf2 + +keymap usqwerty +function try_user_config { + set root="${1}" + for dir in boot grub grub2 boot/grub boot/grub2; do + for name in '' autoboot_ libreboot_ coreboot_; do + if [ -f /"${dir}"/"${name}"grub.cfg ]; then + configfile /"${dir}"/"${name}"grub.cfg + fi + done + done +} +function search_grub { + for i in 0 1 2 3; do + # raw devices + try_user_config "(${1}${i})" + for part in 1 2 3 4 5; do + # MBR/GPT partitions + try_user_config "(${1}${i},${part})" + done + done +} +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 "${dir}"/syslinux/syslinux.cfg + fi + done +} +function search_isolinux { + for i in 0 1; do + # raw devices + try_isolinux_config "(${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 'Load test configuration (grubtest.cfg) inside of CBFS [t]' --hotkey='t' { + set root='(cbfsdisk)' + configfile /grubtest.cfg +} +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 +} + |