git.zerfleddert.de Git - m1-debian/blob - files/rc.local

   1 #!/usr/bin/perl
   2
   3 my $firmware_tarball = '/boot/efi/vendorfw/firmware.tar';
   4 my $firmware_manifest = '/lib/firmware/ASAHI_FIRMWARE_MANIFEST';
   5 my $grubcfg = '/mnt/EFI/debian/grub.cfg';
   6
   7 sub
   8 find_root_device
   9 {
  10         open(MOUNT, '<', '/proc/mounts') || die ("Can not open /proc/mounts for reading: $!");
  11         my @lines = <MOUNT>;
  12         close(MOUNT);
  13
  14         for (@lines) {
  15                 if (/^([\S]+)+ \/ /) {
  16                         return $1;
  17                 }
  18         }
  19
  20         die("Could not find root device");
  21 }
  22
  23 sub
  24 find_fs_uuid_of_device
  25 {
  26         my $dev = shift || die;
  27         my $blkid_output = `blkid ${dev}`;
  28
  29         if ($blkid_output =~ /UUID="([^"]+)"/) {
  30                 return $1;
  31         }
  32
  33         die("Could not find fs uuid of $dev");
  34 }
  35
  36 sub
  37 find_efi_parition
  38 {
  39         my $uuid_in_grub_cfg = shift || die;
  40         my @candidates;
  41
  42         my $efi_parition = undef;
  43
  44         for (`blkid`) {
  45                 if (/^([\S]+):.*TYPE="vfat"/) {
  46                         push(@candidates, $1);
  47                 }
  48         }
  49
  50         for my $dev (@candidates) {
  51                 system("mount -o ro $dev /mnt");
  52                         if (-f $grubcfg) {
  53                                 open(GRUBCFG, '<', $grubcfg) || die ("Can't open $grubcfg: $!");
  54                                 my @lines = <GRUBCFG>;
  55                                 for (@lines) {
  56                                         if (/${uuid_in_grub_cfg}/) {
  57                                                 $efi_parition = $dev;
  58                                         }
  59                                 }
  60                                 close(GRUBCFG);
  61                         }
  62                 system("umount /mnt");
  63                 last if defined $efi_parition;
  64         }
  65
  66         die ("No efi parition found") unless defined $efi_parition;
  67
  68         return $efi_parition;
  69 }
  70
  71 sub
  72 generate_fstab
  73 {
  74         my $root_fs_uuid = shift || die;
  75         my $efi_fs_uuid = shift || die;
  76
  77         open(FSTAB, '>', '/etc/fstab') || die ("Can not open fstab");
  78         print FSTAB <<EOF;
  79 UUID="$root_fs_uuid" /         ext4 defaults 0 0
  80 UUID="$efi_fs_uuid"  /boot/efi vfat defaults 0 0
  81 EOF
  82         close(FSTAB);
  83 }
  84
  85 sub
  86 install_grub
  87 {
  88         system('rm -rf /boot/efi/EFI');
  89         system('apt-get install -y grub-efi-arm64-signed-');
  90         system("echo 'grub-efi-arm64 grub2/update_nvram boolean false' | debconf-set-selections");
  91         system("echo 'grub-efi-arm64 grub2/force_efi_extra_removable boolean true' | debconf-set-selections");
  92         system('dpkg-reconfigure -fnoninteractive grub-efi-arm64');
  93         system('update-grub');
  94         system('grub-install --removable /boot/efi');
  95 }
  96
  97 sub
  98 update_wifi_firmware_if_necessary
  99 {
 100         return unless -f $firmware_tarball;
 101
 102         if (-f $firmware_manifest) {
 103                 system("sha256sum -c $firmware_manifest --quiet");
 104                 return if $? == 0;
 105         }
 106
 107         system("sha256sum $firmware_tarball > $firmware_manifest");
 108         system("tar -C /lib/firmware/ -xf $firmware_tarball");
 109
 110         unlink('/etc/modprobe.d/blacklist.conf');
 111         system('modprobe brcmfmac');
 112 }
 113
 114 my $root_block_device = undef;
 115 my $initial_root_fs_uuid = undef;
 116 my $efi_block_device = undef;
 117 my $efi_fs_uuid = undef;
 118
 119 unless (-f '/boot/grub/grub.cfg') {
 120         $root_block_device = find_root_device();
 121         system("resize2fs $root_block_device");
 122         $initial_root_fs_uuid = find_fs_uuid_of_device($root_block_device);
 123         $efi_block_device = find_efi_parition($initial_root_fs_uuid);
 124         $efi_fs_uuid = find_fs_uuid_of_device($efi_block_device);
 125         generate_fstab($initial_root_fs_uuid, $efi_fs_uuid);
 126         system('mount /boot/efi');
 127         install_grub();
 128 }
 129
 130 update_wifi_firmware_if_necessary();