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====== nvflash ======

nvflash is a utility provided by Nvidia for flashing Tegra devices. Nvflash runs on a host PC and communicates with the Tegra system (the AC100 in our case) through a dedicated USB port (the mini USB port on the AC100).

nvflash is distributed by nvidia as a binary only. Sources are not available and the communication protocol in not publicly documented.

====== Installing nvflash ======

==== From the nvidia tegra developper site ====

nvflash is distributed as part of the Linux4Tegra Development kit. available here: http://developer.nvidia.com/tegra-250-tango-development-kits

The following commands will install nvflash in ~/tools/ldk/bootloader folder:

<code>
$ mkdir ~/tools/
$ wget http://developer.download.nvidia.com/assets/mobile/files/tegra-linux-12.alpha.1.0.tar.gz
$ tar xf tegra-linux-12.alpha.1.0.tar.gz 
</code>

Two files are useful:
  * ~/tools/ldk/bootloader/nvflash: the nvflash utility itself
  * ~/tools/ldk/bootloader/harmony/fastboot.bin, a simple bootloader which is downloaded on the Tegra CPU to manage further communication with nvflash

==== Debian/Ubuntu Package ====

Without any clear usage and redistribution license, nvflash cannot be distributed as a standard package. 
An installer package is available from here: http://share.grandou.net/debian/nvflash

Here is how to install it:

<code>
$ cd /tmp
$ wget http://share.grandou.net/debian/nvflash/nvflash_20110222-1_all.deb 
$ sudo dpkg -i nvflash_20110222-1_all.deb
</code>

nvflash is install as /usr/bin/nvflash, and so can be run directly from your shell

the bootloader is installed here: /usr/lib/nvflash/bootloader.bin

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