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-rw-r--r--resources/grub/config/menuentries/common.cfg182
1 files changed, 88 insertions, 94 deletions
diff --git a/resources/grub/config/menuentries/common.cfg b/resources/grub/config/menuentries/common.cfg
index ec2def32..1d6c813a 100644
--- a/resources/grub/config/menuentries/common.cfg
+++ b/resources/grub/config/menuentries/common.cfg
@@ -1,143 +1,137 @@
-menuentry 'Load Operating System' {
- insmod ahci
- insmod part_msdos
- insmod part_gpt
- # Iterate through all possible disks and partitions
- for i in 0 1; do
- # Look for fully encrypted disks, prompt for passphrase if successful
- cryptomount "(ahci${i})"
- # Check for filesystems replacing MBR/GPT at all, e.g. BTRFS or ZFS
- x="(crypto${i})"
- set root=${x}
- for p in "grub/libreboot_" "boot/grub/libreboot_" "grub/" "boot/grub/"; do
- if [ -f "${x}/${p}grub.cfg" ] ; then
+menuentry 'Load Operating System (incl. fully encrypted disks) [O]' --hotkey='o' --hotkey='O' {
+
+# GRUB handles (almost) every possible disk setup, but only the location of /boot is actually important,
+# since GRUB only loads the user's config. As soon as the kernel takes over, autoboot's done.
+
+# 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 GRUB as payload and probably desired/used
+# by most users, autoboot GRUB config tries to load the operating system (kernel) in the following way:
+
+ # 1. Try to decrypt raw devices first. This <your disk setup> inside a LUKS container is pretty common
+ # a) Try LVM and RAID first, they might be used (accross multiple (raw) devices)
+ # b) Always try LVM before RAID (LVM on (raw) RAID)
+ # c) Try MBR/GPT partitions at last, one might still conviniently uses a single partition
+ devs="(lvm/*) md/0 (md/0,*) ahci0 ahci1 (ahci0,*) (ahci1,*)"
+ # d) Check every unencrypted device/partition first to avoid unnecessary decryption if /boot is
+ # not encrypted
+ for d in ${devs}; do
+ # 2. Look for user config. If the above routine successfully decrypted a LUKS container, its content
+ # will be searched before everything else for obvious reasons. Regardless of this, the devices'
+ # hirachy stays the same.
+ set root=${d}
+ # a) Check possible file locations...
+ for p in boot/grub/autoboot_ grub/autoboot_ boot/grub/ grub/; do
+ if [ -f "/${p}grub.cfg" ]; then
+ # b) And eventually try to load the config. Using ESC one can still exit and revert back to
+ # autoboot's menu.
configfile /${p}grub.cfg
fi
done
- for j in 0 1 2 3 4 5 6 7 8 9; do
- # Check for normal MBR/GPT disks
- # GPT allows more than 4 partitions, /boot on /dev/sda7 is highly unlikely but still possible
- # /boot can still be encrypted
- for k in "crypto" "ahci"; do
- x="(${k}${i},${j})"
- set root=${x}
- for p in "grub/libreboot_" "boot/grub/libreboot_" "grub/" "boot/grub/"; do
- if [ -f "${x}/${p}grub.cfg" ] ; then
- configfile /${p}grub.cfg
- fi
- done
- done
- done
done
-
- set root='md/0'
- for p in "/" "/boot/"; do
- if [ -f "${p}vmlinuz" ] ; then
- linux ${p}vmlinuz root=/dev/md0 rw
- if [ -f "${p}initrd.img" ] ; then
- initrd ${p}initrd.img
+ # (This way, we only need to scan for encrypted data once while covering every possible disk setup,
+ # be it LVM/BTRFS/ZFS/ext4/etc. (on LUKS) (on RAID) on/across raw devices/MBR/GPT
+ for d in ${devs}; do
+ # prompt user for passphrase if LUKS header is found
+ cryptomount ${d}
+ done
+ # 3. Do the same routine again, but for possibly decrypted data this time. There might be an LVM
+ # inside the LUKS container, but check crypto0 first since lvm/* also covers already existing (and
+ # therefore already scanned volumes as well)
+ for d in crypto0 (crypt0,*) (lvm/*); do
+ set root=${d}
+ for p in boot/grub/autoboot_ grub/autoboot_ boot/grub/ grub/; do
+ if [ -f "/${p}grub.cfg" ]; then
+ configfile /${p}grub.cfg
fi
- fi
+ done
done
-
- set root='ahci0,1'
- for p in "/" "/boot/"; do
- if [ -f "${p}vmlinuz" ] ; then
+ # 4. Last resort, if none of the above succeeds, all you have is GRUB's shell
+ set root=ahci0,1
+ for p in / /boot/; do
+ if [ -f "${p}vmlinuz" ]; then
linux ${p}vmlinuz root=/dev/sda1 rw
- if [ -f "${p}initrd.img" ] ; then
+ if [ -f "${p}initrd.img" ]; then
initrd ${p}initrd.img
fi
fi
done
}
-menuentry 'Parse ISOLINUX menu (SATA)' {
- insmod ahci
- insmod part_msdos
- insmod part_gpt
+menuentry 'Parse ISOLINUX menu (AHCI) [A]' --hotkey='a' --hotkey='A' {
for i in 0 1; do
- # Check for filesystems replacing MBR/GPT at all, e.g. BTRFS or ZFS
- set root="(ahci${i})"
- for p in "/isolinux" "/syslinux"; do
- if [ -f "${p}${p}.cfg" ] ; then
+ # Check for filesystem on raw device without partition table (MBR/GPT), e.g. BTRFS or ZFS
+ set root=ahci${i}
+ for p in /isolinux /syslinux; do
+ if [ -f "${p}${p}.cfg" ]; then
syslinux_configfile -i ${p}${p}.cfg
- elif [ -f "/boot${p}${p}.cfg" ] ; then
+ elif [ -f "/boot${p}${p}.cfg" ]; then
syslinux_configfile -i /boot${p}${p}.cfg
fi
done
- # Check for normal MBR/GPT disks
- # GPT allows more than 4 partitions, /boot on /dev/sda7 is highly unlikely but still possible
+ # Look for partitions
+ # GPT allows more than 4 partitions, /boot on /dev/sda7 is quite unlikely but still possible
for j in 0 1 2 3 4 5 6 7 8 9; do
- set root="(ahci${i},${j})"
- for p in "/isolinux" "/syslinux"; do
- if [ -f "${p}${p}.cfg" ] ; then
+ set root="ahci${i},${j}"
+ for p in /isolinux /syslinux; do
+ if [ -f "${p}${p}.cfg" ]; then
syslinux_configfile -i ${p}${p}.cfg
- elif [ -f "/boot${p}${p}.cfg" ] ; then
+ elif [ -f "/boot${p}${p}.cfg" ]; then
syslinux_configfile -i /boot${p}${p}.cfg
fi
done
done
done
}
-menuentry 'Parse ISOLINUX menu (USB)' {
- insmod usbms
- insmod part_msdos
- insmod part_gpt
+menuentry 'Parse ISOLINUX menu (USB) [U]' --hotkey='u' --hotkey='U' {
for i in 0 1; do
- # Check for filesystems replacing MBR/GPT at all, e.g. BTRFS or ZFS
- set root="(usb${i})"
- for p in "/isolinux" "/syslinux"; do
- if [ -f "${p}${p}.cfg" ] ; then
+ # Check for filesystem on raw device without partition table (MBR/GPT), e.g. BTRFS or ZFS
+ set root=usb${i}
+ for p in /isolinux /syslinux; do
+ if [ -f "${p}${p}.cfg" ]; then
syslinux_configfile -i ${p}${p}.cfg
- elif [ -f "/boot${p}${p}.cfg" ] ; then
+ elif [ -f "/boot${p}${p}.cfg" ]; then
syslinux_configfile -i /boot${p}${p}.cfg
fi
done
- # Check for normal MBR/GPT disks
- # GPT allows more than 4 partitions, /boot on /dev/sda7 is highly unlikely but still possible
+ # Look for partitions
+ # GPT allows more than 4 partitions, /boot on /dev/sda7 is quite unlikely but still possible
for j in 0 1 2 3 4 5 6 7 8 9; do
- set root="(usb${i},${j})"
- for p in "/isolinux" "/syslinux"; do
- if [ -f "${p}${p}.cfg" ] ; then
+ set root=usb${i},${j}
+ for p in /isolinux /syslinux; do
+ if [ -f "${p}${p}.cfg" ]; then
syslinux_configfile -i ${p}${p}.cfg
- elif [ -f "/boot${p}${p}.cfg" ] ; then
+ elif [ -f "/boot${p}${p}.cfg" ]; then
syslinux_configfile -i /boot${p}${p}.cfg
fi
done
done
done
}
-menuentry 'Parse ISOLINUX menu (CD/DVD)' {
- insmod ahci
+menuentry 'Parse ISOLINUX menu (CD/DVD) [D]' --hotkey='d' --hotkey='D' {
insmod ata
- insmod iso9660
- for x in (ata0) (ahci1); do
+ for x in ata0 ahci1; do
set root=${x}
- for p in "/isolinux" "/syslinux"; do
- if [ -f "${p}${p}.cfg" ] ; then
+ for p in /isolinux /syslinux; do
+ if [ -f "${p}${p}.cfg" ]; then
syslinux_configfile -i ${p}${p}.cfg
- elif [ -f "/boot${p}${p}.cfg" ] ; then
+ elif [ -f "/boot${p}${p}.cfg" ]; then
syslinux_configfile -i /boot${p}${p}.cfg
fi
done
done
}
-menuentry 'Switch to grubtest.cfg' {
- set root='cbfsdisk'
- configfile (cbfsdisk)/grubtest.cfg
+menuentry 'Switch to grubtest.cfg [T]' --hotkey='t' --hotkey='T' {
+ set root=cbfsdisk
+ configfile /grubtest.cfg
}
-menuentry 'Search for GRUB configuration (grub.cfg) outside of CBFS' {
- insmod ahci
- insmod usbms
- insmod part_msdos
- insmod part_gpt
- for i in ahci0 usb0 usb1; do
+menuentry 'Search for GRUB configuration (grub.cfg) outside of CBFS [S]' --hotkey='s' --hotkey='S' {
+ for i in ahci0 ahci1 usb0 usb1; do
for j in 1 2 3 4 5 6 7 8 9; do
- x="(${i},${j})"
- for p in "grub" "boot/grub" "grub2" "boot/grub2"; do
- if [ -f "${x}/${p}/grub.cfg" ] ; then
+ x=${i},${j}
+ for p in "" /grub /boot/grub /grub2 /boot/grub2; do
+ if [ -f "${x}${p}/grub.cfg" ]; then
submenu "Load Config from ${x}" ${x} {
root=$2
- source /${p}/grub.cfg
+ source ${p}/grub.cfg
unset superusers
}
fi
@@ -145,9 +139,9 @@ menuentry 'Search for GRUB configuration (grub.cfg) outside of CBFS' {
done
done
}
-menuentry 'Poweroff' {
-halt
+menuentry 'Poweroff [P]' --hotkey='p' --hotkey='P' {
+ halt
}
-menuentry 'Reboot' {
-reboot
+menuentry 'Reboot [R]' --hotkey='r' --hotkey='R' {
+ reboot
}
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-20 02:35:17 +0000