===== Updating existing firmware over ethernet =====
\\
This tutorial describes hoe to update the firmware files in U-Boot.

==== Prerequisites ====

  * Configured TFTP Server on development host, please see [[en:general_information:tftp|How to setup TFTP Server]]


**1. Boot from eMMC or SD and stop autoboot in U-Boot**\\
<code>Hit any key to stop autoboot:  0
=></code>\\
**2. Set U-Boot variable //mmcdev//  according to the drive you want to write to**
<code>=> setenv mmcdev <Nr.></code>
++++mmcdev| 
<wrap info>TQMa6x, TQMa6ULx, TQMa7x:</wrap>\\
//mmcdev 0// = eMMC\\
//mmcdev 1// = SD Card\\
\\
<wrap info>TQMa335x:</wrap>\\
//mmcdev 0// = SD Card\\
//mmcdev 1// = eMMC\\
\\
<wrap info>TQMLS102xA:</wrap>\\
<wrap important>mmcdev depends on the placement of eMMC on your module!</wrap>\\
//mmcdev 0// = SD Card **or** eMMC
++++ 
**3. Connect  target device via ethernet to a tftp server supplying the frimware images**\\
**4. Provide the correct network configuration in U-Boot:** 





  * => setenv autoload no
  * => setenv serverip <serverip> (e.g.: setenv serverip 192.168.100.110) 
  * => setenv ipaddr <ipaddr> (e.g.: setenv ipaddr 192.168.100.111)
  * => setenv netmask <netmask> (e.g.: setenv netmask 255.255.255.0)
**5. Provide U-Boot the file name of the desired image on the tftp server:** 
  * ++For U-Boot update:| \\
\\
<wrap info>TQMa6x, TQMa6ULx, TQMa7x, TQMLS102xA:</wrap>\\
=> setenv uboot <filename>\\
\\
<wrap info>TQMa335x: please see [[en:arm:tqma335x:linux:ptxdist:deployment#Updating the firmware|Updating the firmware]]</wrap>\\
\\
++
  * ++For Device Tree update:| \\
\\
<wrap info>TQMa6x, TQMa6ULx, TQMa7x, TQMLS102xA:</wrap>\\
=> setenv fdt_file <filename>\\
\\
<wrap info>TQMa335x: please see [[en:arm:tqma335x:linux:ptxdist:deployment#Updating the firmware|Updating the firmware]]</wrap>\\
\\
++
  * ++For Kernel update:| \\ 
\\
<wrap info>TQMa6x, TQMa6ULx, TQMa7x, TQMLS102xA:</wrap>\\
=> setenv zimage <filename>\\
\\
<wrap info>TQMa335x: please see [[en:arm:tqma335x:linux:ptxdist:deployment#Updating the firmware|Updating the firmware]]</wrap>\\
\\
++

**6. Perform Update:** 
  * ++U-Boot update:| \\
<wrap info>TQMa6x, TQMa6ULx, TQMa7x, TQMLS102xA:</wrap>\\
=> run update_uboot\\
\\
<wrap info>TQMa335x: please see [[en:arm:tqma335x:linux:ptxdist:deployment#Updating the firmware|Updating the firmware]]</wrap>\\
\\
++
  * ++Device Tree update:| \\
<wrap info>TQMa6x, TQMa6ULx, TQMa7x, TQMLS102xA:</wrap>\\
=> run update_fdt\\
\\
<wrap info>TQMa335x: please see [[en:arm:tqma335x:linux:ptxdist:deployment#Updating the firmware|Updating the firmware]]</wrap>\\
\\
++
  * ++Kernel update:| \\
<wrap info>TQMa6x, TQMa6ULx, TQMa7x, TQMLS102xA:</wrap>\\
=> run update_kernel\\
\\
<wrap info>TQMa335x: please see [[en:arm:tqma335x:linux:ptxdist:deployment#Updating the firmware|Updating the firmware]]</wrap>\\
\\
++

<WRAP round info>
The u-boot update scripts automatically implement the selection of the primary copy to boot.
</WRAP>