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 $PARTITION_LABEL
 111 set maybe_to_ram=''
 112
 113 menuentry "Copy ISO image to ram before booting" {
 114   # copytoram is used by arch
 115   # toram is used by casper based images (tails, Ubuntu, etc)
 116   set maybe_to_ram="copytoram toram"
 117 }
 118
 119 function setup_arch {
 120   menuentry "\$1" {
 121     loopback loop \$1
 122     echo "Loading kernel..."
 123     linux (loop)/arch/boot/x86_64/vmlinuz-* img_label=${PARTITION_LABEL} img_loop=\$1 archisobasedir=arch earlymodules=loop \$maybe_to_ram
 124     echo "Loading initrd (and microcode if they exist)..."
 125     initrd (loop)/arch/boot/*.img (loop)/arch/boot/x86_64/initramfs-*.img
 126   }
 127 }
 128 for iso in /archlinux-*.iso /isos/archlinux-*.iso; do
 129   if [ -f "\$iso" ]; then
 130     setup_arch \$iso
 131   fi
 132 done
 133
 134 function setup_debian {
 135   menuentry "\$1" {
 136     linux \$1/vmlinuz
 137     initrd \$1/initrd.gz
 138   }
 139 }
 140 for d in /debian-*-hd-media; do
 141   if [ -d "\$d" ]; then
 142     setup_debian \$d
 143   fi
 144 done
 145
 146 if [ -f /memdisk -a -f /FD12LITE.zip ]; then
 147   menuentry /FD12LITE.zip {
 148     if [ \${grub_platform} = pc ]; then
 149       linux16 /memdisk raw
 150       initrd16 /FD12LITE.zip
 151     else
 152       echo "FreeDOS only works with BIOS boot."
 153       sleep 3
 154     fi
 155   }
 156 fi
 157
 158 if [ -f /memtest.bin ]; then
 159   menuentry "/memtest" {
 160     linux16 /memtest.bin
 161   }
 162 fi
 163
 164 function setup_fedora {
 165   menuentry "\$1" {
 166     loopback loop \$1
 167     probe -s iso_label -l (loop)
 168     echo "Loading kernel..."
 169     linux (loop)/isolinux/vmlinuz root=live:CDLABEL=\$iso_label rd.live.image quiet iso-scan/filename=\$1
 170     echo "Loading initrd..."
 171     initrd (loop)/isolinux/initrd.img
 172   }
 173 }
 174 for iso in /Fedora-Workstation-Live-*.iso /isos/Fedora-Workstation-Live-*.iso; do
 175   if [ -f "\$iso" ]; then
 176     setup_fedora \$iso
 177   fi
 178 done
 179
 180 function setup_ubuntu {
 181   menuentry "\$1" {
 182     loopback loop \$1
 183     echo "Loading kernel..."
 184     linux (loop)/casper/vmlinuz* boot=casper quiet iso-scan/filename=\$1 \$maybe_to_ram
 185     echo "Loading initrd..."
 186     initrd (loop)/casper/initrd*
 187   }
 188 }
 189 for iso in /ubuntu-*-desktop-*.iso /isos/ubuntu-*-desktop-*.iso; do
 190   if [ -f "\$iso" ]; then
 191     setup_ubuntu \$iso
 192   fi
 193 done
 194
 195 function setup_tails {
 196   menuentry "\$1" {
 197     loopback loop \$1
 198     echo "Loading kernel..."
 199     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 \$maybe_to_ram
 200     echo "Loading initrd..."
 201     initrd (loop)/live/initrd*
 202   }
 203 }
 204 for iso in /tails-*.iso /isos/tails-*.iso; do
 205   if [ -f "\$iso" ]; then
 206     setup_tails \$iso
 207   fi
 208 done
 209
 210 EOT
 211 }
 212
 213 CMD="cmd_${1:-}"
 214 shift || true
 215
 216 if [ "$(type -t -- "$CMD")" = "function" ]; then
 217     "${CMD}" "$@"
 218 else
 219     echo "Usage: $0 [format|mount|grub|grubcfg|freedos|memtest|umount]"
 220     exit 1
 221 fi