code.delx.au - monosys/blob - scripts/multiboot-setup.sh

   1 #!/bin/bash
   2
   3 set -e
   4
   5 SYSLINUX_CFG="syslinux/syslinux.cfg"
   6 REFIND_CFG="System/Library/CoreServices/refind.conf"
   7
   8 function setup_bootloader {
   9     install_syslinux
  10     install_refind
  11     rm -rf distros
  12 }
  13
  14 function install_syslinux {
  15     rm -rf syslinux
  16     mkdir syslinux
  17     cp -R /usr/lib/syslinux/bios/*.c32 syslinux/
  18
  19     echo "UI menu.c32" >> "$SYSLINUX_CFG"
  20
  21     echo "Run these commands to configure set up your bootable device:"
  22     echo "  # dosfslabel /dev/sdX multiboot"
  23     echo "  # dd bs=440 count=1 if=/usr/lib/syslinux/bios/mbr.bin of=/dev/sdX"
  24     echo "  # extlinux -i -d /<mountpoint>/syslinux"
  25 }
  26
  27 function install_refind {
  28     rm -rf System
  29     mkdir -p System/Library/CoreServices
  30     cp /usr/share/refind/refind_x64.efi System/Library/CoreServices/boot.efi
  31
  32     echo "timeout 0" >> "$REFIND_CFG"
  33     echo "textonly true" >> "$REFIND_CFG"
  34     echo "textmode 1024" >> "$REFIND_CFG"
  35     echo "scanfor manual" >> "$REFIND_CFG"
  36 }
  37
  38 function setup_iso {
  39     mount_iso
  40     set_boot_vars
  41     copy_boot_files
  42     configure_syslinux
  43     configure_refind
  44     umount_iso
  45 }
  46
  47 function mount_iso {
  48     umount_iso
  49     sudo mount "$ISOFILE" /mnt
  50 }
  51
  52 function umount_iso {
  53     sudo umount /mnt || true
  54 }
  55
  56 function set_boot_vars {
  57     if [[ "$ISOFILE" == *ubuntu*.iso ]]; then
  58         set_ubuntu_boot_vars
  59     elif [[ "$ISOFILE" == *fedora*.iso ]]; then
  60         set_fedora_boot_vars
  61     elif [[ "$ISOFILE" == *archlinux*.iso ]]; then
  62         set_archlinux_boot_vars
  63     else
  64         echo "Unsupported ISO! $ISOFILE"
  65     fi
  66 }
  67
  68 function set_ubuntu_boot_vars {
  69     version="$(basename "$ISOFILE" | cut -d- -f2)"
  70     menulabel="Ubuntu $version"
  71     unpackdir="distros/ubuntu_$(generate_safe_filename "$version")"
  72     kernel="/mnt/casper/vmlinuz.efi"
  73     initrd="/mnt/casper/initrd.lz"
  74     bootparams="boot=casper iso-scan/filename=/${unpackdir}/$(basename "$ISOFILE")"
  75 }
  76
  77 function set_fedora_boot_vars {
  78     version="$(basename "$ISOFILE" .iso | sed 's/.*x86_64-//')"
  79     menulabel="Fedora $version"
  80     unpackdir="distros/fedora_$(generate_safe_filename "$version")"
  81     kernel="/mnt/isolinux/vmlinuz0"
  82     initrd="/mnt/isolinux/initrd0.img"
  83     bootparams="root=live:CDLABEL=$(basename "$ISOFILE" .iso) rootfstype=auto iso-scan/filename=/${unpackdir}/$(basename "$ISOFILE")"
  84 }
  85
  86 function set_archlinux_boot_vars {
  87     version="$(basename "$ISOFILE" .iso | sed -e 's/archlinux-//' -e 's/-dual//')"
  88     menulabel="ArchLinux $version"
  89     unpackdir="distros/archlinux_$(generate_safe_filename "$version")"
  90     kernel="/mnt/arch/boot/x86_64/vmlinuz"
  91     initrd="/mnt/arch/boot/x86_64/archiso.img"
  92     bootparams="img_label=multiboot img_loop=${unpackdir}/$(basename "$ISOFILE") archisobasedir=arch earlymodules=loop"
  93 }
  94
  95 function generate_safe_filename {
  96     echo -n "$1" | tr -c '[:alnum:]\n' '_'
  97 }
  98
  99 function copy_boot_files {
 100     mkdir -p "${unpackdir}"
 101     ln "$ISOFILE" "${unpackdir}/"
 102     cp "$kernel" "$initrd" "${unpackdir}/"
 103 }
 104
 105 function configure_syslinux {
 106     cat <<EOT >> "$SYSLINUX_CFG"
 107
 108 LABEL $(basename $unpackdir)
 109 MENU LABEL ${menulabel}
 110 LINUX /${unpackdir}/$(basename ${kernel})
 111 INITRD /${unpackdir}/$(basename ${initrd})
 112 APPEND ${bootparams}
 113 EOT
 114 }
 115
 116 function configure_refind {
 117     cat <<EOT >> "$REFIND_CFG"
 118
 119 menuentry "${menulabel}"
 120     loader /${unpackdir}/$(basename ${kernel})
 121     initrd /${unpackdir}/$(basename ${initrd})
 122     options "${bootparams}"
 123 }
 124 EOT
 125 }
 126
 127 if [ "$1" = "reset" ]; then
 128     setup_bootloader
 129 elif [[ "$1" == *.iso ]]; then
 130     ISOFILE="$1"
 131     setup_iso
 132 else
 133     echo "Usage: $0 [reset|/path/to/ubuntu.iso]"
 134 fi