{{template>en:templates:tabs_yocto_bootstrap|product_type="Embedded module"|lang="en"|mod_name="tqmls1028A"|mod_name_head="TQMLS1028A"|mod_arch="layerscape"|bsp_name="linux"|build_system="yocto"|build_system_head="YOCTO"|bsp_name_head="Linux"}}
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===== Updating existing firmware over ethernet =====
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A good approach to update the firmare components U-Boot,Linux kernel and devicetree in a running system it to load them from a tftp server. \\ 
This process requires a running TFTP server, please see the following page [[en:general_information:tftp|how to setup TFTP Server]].
After setting up the TFTP server, the binaries to be updated must be copied into the TFTP directory. 

==== Update Process ==== 

1. Setup the Starterkit to boot from eMMC or SD \\
2. Connect the kit to the network with TFTP server supplying the binaries via ethernet on connector@eth_prime@ \\
3. Power up the system and interrupt the boot process in U-Boot\\
<code>
Hit any key to stop autoboot:  0
=>
</code>
3. Setup the ethernet interface:
++++ Set network settings manually |

Provide the correct network configuration in U-Boot: 
<code>
=> setenv autoload no
=> setenv serverip <serverip>  (IP address of your TFTP server 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)
</code>
++++

++++ Set network settings using DHCP |
If a DHCP server is available in the network, the interface can be configured by the server:
<code>
=> setenv autoload no
=> setenv serverip <serverip>   (IP address of your TFTP server e.g.: setenv serverip 192.168.100.110)
=> dhcp (get IP from server)
</code>
++++
\\
4. Set U-Boot variable **mmcdev** according to the drive you want to write to.
<code>=> setenv mmcdev <device_number></code> 
{{section>.:..:..:data#device_assignment&noheader}}

**5. Set U-Boot environment variables according to the image file name stored on the tftp server:** 
++++ eMMc/SD Card |
  * For the pre-Bootloader on eMMC/SD Card : <code>=> setenv pbl_mmc_file <filename>   (e.g.: setenv pbl_mmc_file bl2_sd.pbl)</code>
  * For U-Boot update on eMMC/SD Card :      <code>=> setenv uboot_mmc_file <filename> (e.g.: setenv uboot_mmc_file fip_uboot.bin)</code>
++++
++++ QSPI NOR | 
  * For the pre-Bootloader on QSPI NOR : <code>=> setenv pbl_spi_file <filename>   (e.g.: setenv pbl_spi_file bl2_flexspi_nor.pbl)</code>
  * For U-Boot update on QSPI NOR :      <code>=> setenv uboot_spi_file <filename> (e.g.: setenv uboot_spi_file fip_uboot.bin)</code>
++++


++++ Devicetree |
  * MBLS1028A-IND: For Device Tree update on eMMC/SD Card and QSPI NOR : <code>=> setenv fdt_file <filename> (e.g.: setenv fdt_file fsl-ls1028a-mbls1028a-ind.dtb)</code>
  * MBLS1028A:     For Device Tree update on eMMC/SD Card and QSPI NOR : <code>=> setenv fdt_file <filename> (e.g.: setenv fdt_file fsl-ls1028a-mbls1028a.dtb)</code>
++++
++++ Kernel|
  * For Kernel update on eMMC/SD Card and QSPI NOR : <code>=> setenv kernel_file <filename> (e.g.: setenv kernel_file Image.gz)</code>
++++
\\
**6. Perform Update: **
++++  Pre-bootloader|
         eMMC/SD Card :    => run update_pbl_mmc
         QSPI NOR :        => run update_pbl_spi
++++
++++  U-Boot|
<code>
       eMMC /SD Card :   => run update_uboot_mmc
       QSPI NOR :        => run update_uboot_spi
</code>
++++
++++  Devicetree|
<code>
       eMMC /SD Card :   => run update_fdt_mmc
       QSPI NOR :        => run update_fdt_spi
</code>
++++
++++  Kernel|
<code>
       eMMC /SD Card :   => run update_kernel_mmc
       QSPI NOR :        => run update_kernel_spi
</code>
++++
\\
7. Please also note the [[en:layerscape:tqmls1028a:mbls1028a:dip_switches|MBLS1028A DIP switch settings]] regarding the boot source.