| 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 | system('rmmod brcmfmac'); |
| 111 | system('rmmod brcmutil'); |
| 112 | sleep(1); |
| 113 | system('modprobe brcmfmac'); |
| 114 | sleep(1); |
| 115 | system('rmmod brcmfmac'); |
| 116 | sleep(1); |
| 117 | system('modprobe brcmfmac'); |
| 118 | } |
| 119 | |
| 120 | my $root_block_device = undef; |
| 121 | my $initial_root_fs_uuid = undef; |
| 122 | my $efi_block_device = undef; |
| 123 | my $efi_fs_uuid = undef; |
| 124 | |
| 125 | unless (-f '/boot/grub/grub.cfg') { |
| 126 | $root_block_device = find_root_device(); |
| 127 | system("resize2fs $root_block_device"); |
| 128 | $initial_root_fs_uuid = find_fs_uuid_of_device($root_block_device); |
| 129 | $efi_block_device = find_efi_parition($initial_root_fs_uuid); |
| 130 | $efi_fs_uuid = find_fs_uuid_of_device($efi_block_device); |
| 131 | generate_fstab($initial_root_fs_uuid, $efi_fs_uuid); |
| 132 | system('mount /boot/efi'); |
| 133 | install_grub(); |
| 134 | } |
| 135 | |
| 136 | update_wifi_firmware_if_necessary(); |