Man page for apt-get dfu util Command
This tutorial shows the man page for man dfu util in linux.
Open terminal with 'su' access and type the command as shown below:
man dfu util
Result of the Command Execution shown below:
DFU UTIL(1) DFU UTIL(1)
dfu util Device firmware update (DFU) USB programmer
dfu util [ ldpciatUDRhV]
dfu util is a program that implements the host (PC) side of the USB DFU (Universal Serial Bus Device Firmware Upgrade) protocol.
In the OpenMoko project (for example), this program is used to communicate with the specially enhanced u boot boot loader, which implements the DFU device
List the currently attached DFU capable USB devices.
d, device VENDOR:PRODUCT
Specify vendor/product ID of the DFU device. Both VENDOR and PRODUCT are hex numbers which must start with 0x. Example:
$ dfu util device 0x1457:0x5119
If you only have one standards compliant DFU device attached to your PC, this is optional. However, as soon as you have multiple DFU devices, dfu util
will detect this and abort, asking you to specify which device it shall use.
p, path BUS PORT. ... .PORT
Specify the path to the DFU device.
c, cfg CONFIG NR
Specify the configuration of the DFU device.
i, intf INTF NR
Specify the DFU interface number.
a, alt ALT
Specify the altsetting of the DFU interface by name or by number.
t, transfer size
Specify the number of bytes per USB transfer. If you don't supply this option, the maximum possible size for your combination of host OS and USB
device is chosen (for optimal performance).
U, upload FILE
Read firmware from device into FILE.
Note: Upload support is currently broken.
D, download FILE
Write firmware from FILE into device.
Issue USB reset signalling once we're finished.
Show a help text and exit.
Show version information and exit.
Here are some examples for the usage of dfu util in the OpenMoko project (working with the Neo1973 hardware):
Flashing the rootfs:
$ dfu util a rootfs R D /path/to/openmoko devel image.jffs2
Flashing the kernel:
$ dfu util a kernel R D /path/to/uImage
Flashing the bootloader:
$ dfu util a u boot R D /path/to/u boot.bin
Copying a kernel into RAM:
$ dfu util a 0 R D /path/to/uImage
Once this has finished, the kernel will be available at the default load address of 0x32000000 in Neo1973 RAM.
Note: You cannot transfer more than 2MB of data into RAM using this method.
Please see http://wiki.openmoko.org/wiki/Dfu util for some limitations and bugs in the current dfu util code.
Please report any further bugs at http://bugzilla.openmoko.org or on the openmoko kernel mailing list at openmoko email@example.com.
dfu util is covered by the GNU General Public License (GPL), version 2 or later.
This manual page was written by Uwe Hermann
. It is licensed under the terms of the GNU GPL (version 2 or later).
February 29, 2008 DFU UTIL(1)