This tutorial describes hoe to update the firmware files in U-Boot.

• Configured TFTP Server on development host, please see How to setup TFTP Server

1. Boot from eMMC or SD and stop autoboot in U-Boot

Hit any key to stop autoboot:  0
=>

2. Set U-Boot variable mmcdev according to the drive you want to write to

=> setenv mmcdev <Nr.>

mmcdev

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:
  
  TQMa6x, TQMa6ULx, TQMa7x, TQMLS102xA:
  ⇒ setenv uboot <filename>
  
  TQMa335x: please see Updating the firmware
  
  
• For Device Tree update:
  
  TQMa6x, TQMa6ULx, TQMa7x, TQMLS102xA:
  ⇒ setenv fdt_file <filename>
  
  TQMa335x: please see Updating the firmware
  
  
• For Kernel update:
  
  TQMa6x, TQMa6ULx, TQMa7x, TQMLS102xA:
  ⇒ setenv zimage <filename>
  
  TQMa335x: please see Updating the firmware
  
  

6. Perform Update:

• U-Boot update:
  TQMa6x, TQMa6ULx, TQMa7x, TQMLS102xA:
  ⇒ run update_uboot
  
  TQMa335x: please see Updating the firmware
  
  
• Device Tree update:
  TQMa6x, TQMa6ULx, TQMa7x, TQMLS102xA:
  ⇒ run update_fdt
  
  TQMa335x: please see Updating the firmware
  
  
• Kernel update:
  TQMa6x, TQMa6ULx, TQMa7x, TQMLS102xA:
  ⇒ run update_kernel
  
  TQMa335x: please see Updating the firmware