RK3399 烧写镜像到emmc

• 对应开发板SOM-RK3399，友善提供的镜像下载地址：

http://download.friendlyarm.com/SOM-RK3399

• 友善官方的wiki:

http://wiki.friendlyarm.com/wiki/index.php/SOM-RK3399/zh

• 工具
  烧写到emmc，rockchip提供了两款工具，一款开源，一款不开源，此外没什么大差别。摘至rockchip的说明：http://opensource.rock-chips.com/wiki_Tools

Rockchip Provide Tools for Upgrade firmware to on board storage media like eMMC/NAND/SPI flash.
Please chose a appropriate tool for your project.

Tool Name	Owner	OSS	Description
Upgrade_tool	Rockchip	N	Rockchip official release with in SDK, Linux vesion
rkdeveloptool	Rockchip	Y	open source version of upgrade_tool
rkflashtool	Community	Y	open source, maintained by third party
Android Tool	Rockchip	N	official release within SDK, Windows Only

If you are using a SD card for firmware storage, then you don't need the Tool for firmware upgrade, for example, you can use 'dd' command in Linux OS.

这里选择了Upgrade_tool.

• Upgrade_tool
  下载解压后直接运行：./upgrade_tool
  由于设备未处于rockusb模式，故找不到设备，如图：
  
  按住recovery按键启动电源，板子就会进入rockusb模式，终端上会说找到设备，默认设备号是１，所以找到设备后输入１即可，之后输入按wiki上进行：http://wiki.friendlyarm.com/wiki/index.php/SOMRK3399/zh
  选择

5.2.3 Linux下通过Type-C数据线进行烧写