最終更新:2016-06-29 (水) 18:34:20 (1115d)  

Android/fastboot はてなブックマークを見る
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command line tool used to directly flash the filesystem in Android devices from a host via USB.

It allows flashing of unsigned partition images. It is disabled in production devices since USB support has been disabled in the bootloader. You must have an Engineering SPL, or an SPL that is S-OFF.

http://source.android.com/source/building.html

http://source.android.com/source/building-devices.html

  • $ adb reboot bootloader
    $ fastboot -w
    $ fastboot flash system $ANDROID_ROOT/out/target/product/maguro/system.img
    $ fastboot flash boot $ANDROID_ROOT/out/target/product/maguro/boot.img
    $ fastboot reboot

ドライバ

  • Android SDKのextras\google\usb_driver\android_winusb.inf

Android/アンロック

  • On Nexus One?, Nexus S, Nexus S 4G?, Xoom?, Galaxy Nexus, and Nexus 7, the bootloader is locked by default. With the device in fastboot mode, the bootloader is unlocked with
    $ fastboot oem unlock
    $ fastboot oem lock

デバイスへの転送

機種別

  • During a cold boot, the following key combinations can be used to boot into fastboot mode, which is a mode in the bootloader that can be used to flash the devices:
    DeviceKeys
    grouper (Nexus 7)Press Power for a second, and press Volume Down when the bootloader logo appears
    maguro (Galaxy Nexus)Press and hold both Volume Up and Volume Down, then press and hold Power
    toro (Galaxy Nexus)Press and hold both Volume Up and Volume Down, then press and hold Power
    panda (PandaBoard)Press and hold Input, then press Power
    wingray (Motorola Xoom)Press and hold Volume Down, then press and hold Power
    crespo (Nexus S)Press and hold Volume Up, then press and hold Power
    crespo4g? (Nexus S 4G?)Press and hold Volume Up, then press and hold Power
    passion? (Nexus One?)Press and hold the trackball, then press Power
    sapphire? (HTC Magic?)Press and hold Back, then press Power
    dream? (HTC Dream?)Press and hold Back, then press Power

コマンド

help

  • usage: fastboot [ <option> ] <command>
    
    commands:
      update <filename>                        reflash device from update.zip
      flashall                                 flash boot + recovery + system
      flash <partition> [ <filename> ]         write a file to a flash partition
      erase <partition>                        erase a flash partition
      format <partition>                       format a flash partition
      getvar <variable>                        display a bootloader variable
      boot <kernel> [ <ramdisk> ]              download and boot kernel
      flash:raw boot <kernel> [ <ramdisk> ]    create bootimage and flash it
      devices                                  list all connected devices
      continue                                 continue with autoboot
      reboot                                   reboot device normally
      reboot-bootloader                        reboot device into bootloader
      help                                     show this help message
    
    options:
      -w                                       erase userdata and cache
      -s <serial number>                       specify device serial number
      -p <product>                             specify product name
      -c <cmdline>                             override kernel commandline
      -i <vendor id>                           specify a custom USB vendor id
      -b <base_addr>                           specify a custom kernel base address
      -n <page size>                           specify the nand page size. default:2048
    
    fastboot help
    usage: fastboot [ <option> ] <command>
    
    commands:
      update <filename>                        Reflash device from update.zip.
      flashall                                 Flash boot, system, vendor, and --
                                               if found -- recovery.
      flash <partition> [ <filename> ]         Write a file to a flash partition.
      flashing lock                            Locks the device. Prevents flashing.
      flashing unlock                          Unlocks the device. Allows flashing
                                               any partition except
                                               bootloader-related partitions.
      flashing lock_critical                   Prevents flashing bootloader-related
                                               partitions.
      flashing unlock_critical                 Enables flashing bootloader-related
                                               partitions.
      flashing get_unlock_ability              Queries bootloader to see if the
                                               device is unlocked.
      flashing get_unlock_bootloader_nonce     Queries the bootloader to get the
                                               unlock nonce.
      flashing unlock_bootloader <request>     Issue unlock bootloader using request.
      flashing lock_bootloader                 Locks the bootloader to prevent
                                               bootloader version rollback.
      erase <partition>                        Erase a flash partition.
      format[:[<fs type>][:[<size>]] <partition>
                                               Format a flash partition. Can
                                               override the fs type and/or size
                                               the bootloader reports.
      getvar <variable>                        Display a bootloader variable.
      set_active <suffix>                      Sets the active slot. If slots are
                                               not supported, this does nothing.
      boot <kernel> [ <ramdisk> [ <second> ] ] Download and boot kernel.
      flash:raw boot <kernel> [ <ramdisk> [ <second> ] ]
                                               Create bootimage and flash it.
      devices [-l]                             List all connected devices [with
                                               device paths].
      continue                                 Continue with autoboot.
      reboot [bootloader]                      Reboot device [into bootloader].
      reboot-bootloader                        Reboot device into bootloader.
      help                                     Show this help message.
    
    options:
      -w                                       Erase userdata and cache (and format
                                               if supported by partition type).
      -u                                       Do not erase partition before
                                               formatting.
      -s <specific device>                     Specify a device. For USB, provide either
                                               a serial number or path to device port.
                                               For ethernet, provide an address in the                                           form <protocol>:<hostname>[:port] where                                           <protocol> is either tcp or udp.
      -p <product>                             Specify product name.
      -c <cmdline>                             Override kernel commandline.
      -i <vendor id>                           Specify a custom USB vendor id.
      -b, --base <base_addr>                   Specify a custom kernel base
                                               address (default: 0x10000000).
      --kernel-offset                          Specify a custom kernel offset.
                                               (default: 0x00008000)
      --ramdisk-offset                         Specify a custom ramdisk offset.
                                               (default: 0x01000000)
      --tags-offset                            Specify a custom tags offset.
                                               (default: 0x00000100)
      -n, --page-size <page size>              Specify the nand page size
                                               (default: 2048).
      -S <size>[K|M|G]                         Automatically sparse files greater
                                               than 'size'. 0 to disable.
      --slot <suffix>                          Specify slot suffix to be used if the
                                               device supports slots. This will be
                                               added to all partition names that use
                                               slots. 'all' can be given to refer
                                               to all slots. 'other' can be given to
                                               refer to a non-current slot. If this
                                               flag is not used, slotted partitions
                                               will default to the current active slot.
      -a, --set-active[=<suffix>]              Sets the active slot. If no suffix is
                                               provided, this will default to the value
                                               given by --slot. If slots are not
                                               supported, this does nothing. This will
                                               run after all non-reboot commands.
      --unbuffered                             Do not buffer input or output.
      --version                                Display version.
      -h, --help                               show this message.

Android/パーティション

# cat /proc/mtd

参考

関連