~~NOTOC~~
==device assignment==
<WRAP round info 30%>__Device assignment:__\\
//mmcdev 0// = eMMC\\
//mmcdev 1// = SD Card\\
</WRAP>

== update commands uboot ==

  * U-Boot update: => run update_uboot\\
  * Device Tree update: => run update_fdt\\
  * Kernel update: => run update_kernel\\

===== serial downloader =====

<WRAP round important>The Starterkit has to be set to boot-mode "serial downloader", please see [[en:arm:tqma6x:mba6x:dip_switches|MBa6x DIP switch settings]]
</WRAP>
<WRAP round info>
We recommend to use Ubuntu 14.04 64bit for the imx-usb tool
</WRAP>


Starting with TQMa6x-BSP-REV.0109 we deliver a Linux tool to upload U-Boot into the TQMa6X RAM from your development host and start it.
After building the BSP the tool is located under \\   
**.../TQMa6x-BSP-REV.0109/platform-MBa6x/packages/h-imx_usb_loader-master**\\  

You have to apply the following steps before you can start to work with the tool:

  * Copy the content of folder .../TQMa6x-BSP-REV.0109/platform-MBa6x/packages/host-imx_usb_loader-master/usr/etc/ to /etc 
  * Copy the content of folder .../TQMa6x-BSP-REV.0109/platform-MBa6x/packages/host-imx_usb_loader-master/usr/bin/ to /bin





==== Usage of serial downloader tool ==== 

  - Set Starterkit to boot-mode "serial downloader", please see [[en:arm:tqma6x:mba6x:dip_switches|MBa6x DIP switch settings]]
  - Connect Starterkit connector X8 (Micro USB cable provided with the Starterkit) to your host
  - Connect Starterkit connector X15 (RS232) to your host
  - Power up Starterkit
  - Please check that Linux recognized a new USB device, see output of command **dmesg | grep -i usb**. You should see something like the following :<code>usb 1-1: Manufacturer: Freescale SemiConductor Inc 
hid-generic 0003:15A2:0054.0002: hiddev0,hidraw1: USB HID v1.10 Device [Freescale SemiConductor Inc  SE Blank ARIK] on usb-0000:02:03.0-1/input0
</code>
  - Open a serial terminal on your host e.g. TeraTerm
  - Open a Linux terminal and naviagate to folder "images" in the BSP dirctory\\  e.g. **/home/embedded/TQMa6x-BSP-REV.0109/platform-MBa6x/images**\\   
  - Start the serial downloader **imx_usb** as super user with the desired U-Boot as parameter <WRAP round important>Keep in mind to select a U-Boot that is corresponding to your module, please see [[en:arm:tqma6x:linux:ptxdist:deployment]]</WRAP>e.g.<code>embedded@ubuntu:~/workspace/TQMa6x-BSP-REV.0109/platform-MBa6x/images$ sudo imx_usb u-boot-TQMa6Q_MBa6x.imx</code>host console output after starting the serial downloader<code>config file </etc/imx-loader.d/imx_usb.conf>
vid=0x066f pid=0x3780 file_name=mx23_usb_work.conf
vid=0x15a2 pid=0x004f file_name=mx28_usb_work.conf
vid=0x15a2 pid=0x0052 file_name=mx50_usb_work.conf
vid=0x15a2 pid=0x0054 file_name=mx6_usb_work.conf
vid=0x15a2 pid=0x0061 file_name=mx6_usb_work.conf
vid=0x15a2 pid=0x0063 file_name=mx6_usb_work.conf
vid=0x15a2 pid=0x0041 file_name=mx51_usb_work.conf
vid=0x15a2 pid=0x004e file_name=mx53_usb_work.conf
vid=0x15a2 pid=0x006a file_name=vybrid_usb_work.conf
vid=0x066f pid=0x37ff file_name=linux_gadget.conf
config file </etc/imx-loader.d/mx6_usb_work.conf>
parse /etc/imx-loader.d/mx6_usb_work.conf
15a2:0054(mx6_qsb) bConfigurationValue =1
Interface 0 claimed
HAB security state: development mode (0x56787856)
== work item
filename u-boot-TQMa6Q_MBa6x.imx
load_size 0 bytes
load_addr 0x00000000
dcd 1
clear_dcd 0
plug 1
jump_mode 2
jump_addr 0x00000000
== end work item
main dcd length 308
sub dcd length 304

loading binary file(u-boot-TQMa6Q_MBa6x.imx) to 4fbff400, skip=0, fsize=5cc00 type=aa

<<<379904, 379904 bytes>>>
succeeded (status 0x88888888)
jumping to 0x4fbff400
</code>
  - Now you can see the U-Boot messages in the serial terminal programm

Next steps are:\\
  * write U-Boot using tftp to eMMC, see [[en:arm:tqma6x:linux:ptxdist:deployment#updating_existing_firmware_over_ethernet|Updating existing firmware over ethernet]]  
  * write kernel image using tftp to eMMC, see [[en:arm:tqma6x:linux:ptxdist:deployment#updating_existing_firmware_over_ethernet|Updating existing firmware over ethernet]]