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make-your-own-image.md

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Preparation

You need to install Linux OS. We suggest to install Ubuntu 14.04. And ensure that you have installed follows software.

  sudo apt-get install g++ libncurses5-dev zlib1g-dev bison flex unzip autoconf gawk make \
  gettext gcc binutils patch bzip2 libz-dev asciidoc subversion git

Get source code

  git clone --depth=1 https://github.com/mqmaker/witi-openwrt.git
  git clone --depth=1 https://github.com/mqmaker/witi-uboot.git

Configure & Compile to WiTi

When you download the source code of witi-openwrt, you should configure to compile openwrt. Let's begin!

  • Update & install software packages
    We should update some packages form other repositories, and install it.

          ./scripts/feeds update -a
      ./scripts/feeds install -a

  • Configure
    First, select correct target profile. As follows:

          $ make menuconfig
      
      #Select Target system
      Target System (MTK/Ralink APSOC) --->
      Subtarget (MT7621 based boards) --->
            (   ) MT7620 based boards
            ( x ) MT7621 based boards
            (   ) MT7628 based boards
      
      #Select Target Profile
      Target Profile (MQmaker Witi Board Profile) --->
            (   ) Default Profile
            ( x ) MQmaker Witi Board Profile
      
      #Select the type of Images
      Target Images  --->
            [ * ] ramdisk  --->
            .....
            [ * ] squashfs --->

  • Compile
    Now, we have completed minimum configuration. Next you can compile WiTi source code. If you want to show the process of compilationk, user V=s.

          make V=s

or

        make

Ok, enjoy a cup of tea, wait it complete. ^_^

Download image to WiTi Board

Until then, it will generate an image for WiTi Board at "bin/ramips/" directory. Find it, and copy it to your tftp server directory.For example:

        $ cd bin/ramips/
        $ ls
        $ openwrt-ramips-mt7621-witi-squashfs-sysupgrade.bin   openwrt-ramips-mt7621-witi-initramfs-uImage.bin
        $ cp openwrt-ramips-mt7621-witi-squashfs-sysupgrade.bin /tftpboot/ -vfr

Connect your serial. How to connect serial/UART, here. Before download imge to the WiTi Board, you should configure your serial parameters. If not, minicom can not receive log correctly. As that:

        Speed:   57600
        Parity:   None
        Data:     8
        Stopbits: 1

Then, reboot your WiTi Board. When it run to here:

        U-Boot 1.1.3 (Apr  7 2015 - 20:32:44)
        
        Board: Ralink APSoC DRAM:  256 MB
        relocate_code Pointer at: 8ffb8000
        
        ......
        
        ##### The CPU freq = 880 MHZ #### 
        estimate memory size =256 Mbytes
        #Reset_MT7530
        
        Please choose the operation: 
        1: Load system code to SDRAM via TFTP. 
        2: Load system code then write to Flash via TFTP. 
        3: Boot system code via Flash (default).
        4: Entr boot command line interface.
        7: Load Boot Loader code then write to Flash via Serial. 
        9: Load Boot Loader code then write to Flash via TFTP. 
        1

Select 2 to Flash image at first time. Then select Y, enter ip address, the filename of image, and press ENTER.

        You choosed 2
        2: System Load Linux Kernel then write to Flash via TFTP. 
        Warning!! Erase Linux in Flash then burn new one. Are you sure?(Y/N)
        Y
        
         Please Input new ones /or Ctrl-C to discard
         Input device IP (10.10.10.123) ==:10.10.10.123
         Input server IP (10.10.10.3) ==:10.10.10.3
         Input Linux Kernel filename () ==: openwrt-ramips-mt7621-witi-squashfs-sysupgrade.bin
         
        ......
        
        Filename 'openwrt-ramips-mt7621-witi-squashfs-sysupgrade.bin'.
        TIMEOUT_COUNT=10,Load address: 0x80100000
        Loading: checksum bad
        Got ARP REPLY, set server/gtwy eth addr (d8:cb:8a:13:7e:35)
        Got it
        #################################################################
           #################################################################
           #################################################################
        ......

Enjoy WiTi world

Wait to flash image, and it will boot WiTi-Openwrt Os. Geeks, let's make more and more interesting things.