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Introduction: Android Fastboot
Fastbool is tool from Android tools suite. With a USB connection between a PC and a device (your ARM board, a mobile phone, a tablet, ...), it allows to:
- load kernel/initrd from host PC to device RAM and boot them
- create/erase and read/write flash partition
See http://elinux.org/Android_Fastboot for more information.
You need fastboot installed on your host PC and on your device.
Fastboot on your PC
In order to use fastboot with a device, you need to install fastboot (from android-tools package) on your PC.
sudo zypper install android-tools
Fastboot on your device
Fastboot on your phone
It should be already available but you need to boot your phone in fastboot mode. See http://elinux.org/Android_Fastboot#Special_boot_mode for more information.
Fastboot on your ARM board
Fastboot is now included in uptream u-boot, but not all functions are available compared to android (device) fastboot. You cannot flash your on board memory, for example.
Currently, upstream u-boot (2014.10) enables fastboot on the following boards:
Plug a USB cable between your host PC and your device. Start your device in fastboot mode (special boot sequence for phone/tablet, for u-boot, just type fastboot command in u-boot prompt).
Then, on your host PC, list available devices:
and you should see something like:
Then, get the fastboot protocol version of your device with:
fastboot getvar version
To reboot the device, just type:
To load a kernel and boot it:
fastboot boot <kernel> [ <ramdisk> ]
Note: you may need to append the device tree to the kernel.