code.delx.au - monosys/blob - hacks/multiboot-setup

   1 #!/bin/bash
   2
   3 set -eu
   4
   5 PARTITION_LABEL="multiboot"
   6 MULTIBOOT_MNT="${MULTIBOOT_MNT:-/mnt/multiboot}"
   7
   8 function cmd_format {
   9     if [ ! -b "${1:-}" ]; then
  10         echo "Usage: $0 format /dev/sdX"
  11         exit 1
  12     fi
  13     set -x
  14
  15     sudo -k
  16     DISK_DEVICE="$1"
  17     PARTITION_DEVICE="${DISK_DEVICE}1"
  18     echo -ne 'label: dos\ntype=c, bootable\n' | sudo sfdisk "$DISK_DEVICE"
  19     sudo mkfs.vfat -n "$PARTITION_LABEL" "$PARTITION_DEVICE"
  20 }
  21
  22 function cmd_grub {
  23     DISK_DEVICE="$(findmnt -n -o source "$MULTIBOOT_MNT" | sed 's/[0-9]*$//')"
  24     if [ ! -b "$DISK_DEVICE" ]; then
  25         echo "ERROR! Could not find disk to install bootloader. Try using mount."
  26         exit 1
  27     fi
  28     set -x
  29
  30     sudo -k
  31     install_grub_bios
  32     install_grub_efi
  33     install_grub_cfg
  34 }
  35
  36 function cmd_grubcfg {
  37     set -x
  38     install_grub_cfg
  39 }
  40
  41 function install_grub_bios {
  42     sudo grub-install \
  43         --target=i386-pc \
  44         --boot-directory="$MULTIBOOT_MNT" \
  45         "$DISK_DEVICE"
  46 }
  47
  48 function install_grub_efi {
  49     for arch in i386-efi x86_64-efi; do
  50         sudo grub-install \
  51             --target="$arch" \
  52             --no-nvram \
  53             --removable \
  54             --efi-directory="$MULTIBOOT_MNT" \
  55             --boot-directory="$MULTIBOOT_MNT" \
  56             "$DISK_DEVICE"
  57     done
  58 }
  59
  60 function install_grub_cfg {
  61     if [[ -w "${MULTIBOOT_MNT}/grub/" ]]; then
  62         # We already have write access, no need to use sudo
  63         print_grub_cfg > "${MULTIBOOT_MNT}/grub/grub.cfg"
  64     else
  65         print_grub_cfg | sudo tee "${MULTIBOOT_MNT}/grub/grub.cfg" > /dev/null
  66     fi
  67 }
  68
  69 function cmd_mount {
  70     set -x
  71
  72     PARTITION_DEVICE="$(readlink -f "/dev/disk/by-label/${PARTITION_LABEL}")"
  73     sudo mkdir -p "$MULTIBOOT_MNT"
  74     while sudo umount "$PARTITION_DEVICE" &> /dev/null; do true; done
  75     sudo mount "$PARTITION_DEVICE" "$MULTIBOOT_MNT" -o "uid=$(whoami)"
  76 }
  77
  78 function cmd_umount {
  79     set -x
  80
  81     sudo umount "$MULTIBOOT_MNT"
  82     sudo rmdir "$MULTIBOOT_MNT"
  83 }
  84
  85 function cmd_freedos {
  86     set -x
  87
  88     local SYSLINUX_VERSION="6.03"
  89     local SYSLINUX_URL="https://www.kernel.org/pub/linux/utils/boot/syslinux/syslinux-${SYSLINUX_VERSION}.tar.gz"
  90     local FREEDOS_URL="http://www.freedos.org/download/download/FD12LITE.zip"
  91
  92     curl -fL "$SYSLINUX_URL" | \
  93         tar xz --no-same-owner --strip-components=3 -C "$MULTIBOOT_MNT" \
  94         "syslinux-${SYSLINUX_VERSION}/bios/memdisk/memdisk"
  95
  96     curl -fL "$FREEDOS_URL" > "${MULTIBOOT_MNT}/FD12LITE.zip"
  97 }
  98
  99 function cmd_memtest {
 100     curl -fL "https://www.memtest.org/download/5.01/memtest86+-5.01.bin.gz" | \
 101         zcat - > "${MULTIBOOT_MNT}/memtest.bin"
 102 }
 103
 104 function print_grub_cfg {
 105     cat <<EOT
 106 insmod all_video
 107 insmod part_msdos
 108 insmod progress
 109 insmod regexp
 110 search --set=root --label $PARTITION_LABEL
 111
 112 function setup_arch {
 113   menuentry "\$1" {
 114     loopback loop \$1
 115     echo "Loading kernel..."
 116     linux (loop)/arch/boot/x86_64/vmlinuz-* img_label=${PARTITION_LABEL} img_loop=\$1 archisobasedir=arch earlymodules=loop
 117     echo "Loading initrd (and microcode if they exist)..."
 118     initrd (loop)/arch/boot/*.img (loop)/arch/boot/x86_64/initramfs-*.img
 119   }
 120 }
 121 for iso in /archlinux-*.iso /isos/archlinux-*.iso; do
 122   if [ -f "\$iso" ]; then
 123     setup_arch \$iso
 124   fi
 125 done
 126
 127 function setup_debian {
 128   menuentry "\$1" {
 129     linux \$1/vmlinuz
 130     initrd \$1/initrd.gz
 131   }
 132 }
 133 for d in /debian-*-hd-media; do
 134   if [ -d "\$d" ]; then
 135     setup_debian \$d
 136   fi
 137 done
 138
 139 if [ -f /memdisk -a -f /FD12LITE.zip ]; then
 140   menuentry /FD12LITE.zip {
 141     if [ \${grub_platform} = pc ]; then
 142       linux16 /memdisk raw
 143       initrd16 /FD12LITE.zip
 144     else
 145       echo "FreeDOS only works with BIOS boot."
 146       sleep 3
 147     fi
 148   }
 149 fi
 150
 151 if [ -f /memtest.bin ]; then
 152   menuentry "/memtest" {
 153     linux16 /memtest.bin
 154   }
 155 fi
 156
 157 function setup_fedora {
 158   menuentry "\$1" {
 159     loopback loop \$1
 160     probe -s iso_label -l (loop)
 161     echo "Loading kernel..."
 162     linux (loop)/isolinux/vmlinuz root=live:CDLABEL=\$iso_label rd.live.image quiet iso-scan/filename=\$1
 163     echo "Loading initrd..."
 164     initrd (loop)/isolinux/initrd.img
 165   }
 166 }
 167 for iso in /Fedora-Workstation-Live-*.iso /isos/Fedora-Workstation-Live-*.iso; do
 168   if [ -f "\$iso" ]; then
 169     setup_fedora \$iso
 170   fi
 171 done
 172
 173 function setup_ubuntu {
 174   menuentry "\$1" {
 175     loopback loop \$1
 176     echo "Loading kernel..."
 177     linux (loop)/casper/vmlinuz* boot=casper quiet iso-scan/filename=\$1 \$maybe_to_ram
 178     echo "Loading initrd..."
 179     initrd (loop)/casper/initrd*
 180   }
 181 }
 182 for iso in /ubuntu-*-desktop-*.iso /isos/ubuntu-*-desktop-*.iso; do
 183   if [ -f "\$iso" ]; then
 184     setup_ubuntu \$iso
 185   fi
 186 done
 187
 188 function setup_tails {
 189   menuentry "\$1" {
 190     loopback loop \$1
 191     echo "Loading kernel..."
 192     linux (loop)/live/vmlinuz* initrd=/live/initrd.img boot=live config iso-scan/filename=\$1 findiso=\$1 nopersistence noprompt timezone=Etc/UTC noautologin module=Tails slab_nomerge slub_debug=FZP mce=0 vsyscall=none page_poison=1 init_on_free=1 mds=full,nosmt splash quiet
 193     echo "Loading initrd..."
 194     initrd (loop)/live/initrd*
 195   }
 196 }
 197 for iso in /tails-*.iso /isos/tails-*.iso; do
 198   if [ -f "\$iso" ]; then
 199     setup_tails \$iso
 200   fi
 201 done
 202
 203 EOT
 204 }
 205
 206 CMD="cmd_${1:-}"
 207 shift || true
 208
 209 if [ "$(type -t -- "$CMD")" = "function" ]; then
 210     "${CMD}" "$@"
 211 else
 212     echo "Usage: $0 [format|mount|grub|grubcfg|freedos|memtest|umount]"
 213     exit 1
 214 fi