1Rockusb (Rockchip USB protocol) 2===================================================== 3 4Overview 5-------- 6 7Rockusb protocol is widely used by Rockchip SoC based devices. It can 8read/write info, image to/from devices. This document briefly describes how to 9use Rockusb for upgrading firmware (e.g. kernel, u-boot, rootfs, etc.). 10 11Tools 12-------- 13There are many tools can support Rockusb protocol. rkdeveloptool 14(https://github.com/rockchip-linux/rkdeveloptool) is open source, 15It is maintained by Rockchip. People don't want to build from source 16can download from here 17(https://github.com/rockchip-linux/rkbin/blob/master/tools/rkdeveloptool) 18 19Usage 20-------- 21The Usage of Rockusb command is: 22 23rockusb <USB_controller> <devtype> <dev[:part]> 24 25e.g. rockusb 0 mmc 0 26 27On your U-Boot console, type this command to enter rockusb mode. 28On your host PC. use lsusb command. you should see a usb device 29using 0x2207 as its USB verdor id. 30 31for more detail about the rkdeveloptool. please read the usage. 32 33rkdeveloptool -h 34 35use rkdeveloptool wl command to write lba. BeginSec is the lba on device 36you want to write. 37 38sudo rkdeveloptool wl <BeginSec> <File> 39 40to flash U-Boot image use below command. U-Boot binary is made by mkimage. 41see doc/README.rockchip for more detail about how to get U-Boot binary. 42 43sudo rkdeveloptool wl 64 <U-Boot binary> 44 45There are plenty of Rockusb command. but wl(write lba) and 46rd(reboot) command. These two command can let people flash 47image to device. 48 49To do 50----- 51* Fully support Rockusb protocol 52