Lifshitz at 10:59, 18 December 2014

2014-12-18T10:59:45Z

New page

== Introduction ==
The CM-T54 firmware consists of two components: Secondary Program Loader (SPL) and U-Boot, provided as binary images: {{filename|MLO}} and {{filename|u-boot.img}}.
This article describes the firmware update process for CM-T54 system-on-module product.

== Preliminary setup ==
* Make sure to power off the CM-T54 evaluation platform.
* Connect the host PC to the SB-T54 base-board (connector P11) via the serial cable supplied with the evaluation kit.
* Start terminal emulation software on your PC. Set baud rate to 115200 bps, 8 bit per frame, 1 stop bit, no parity, no flow control.
* Turn on the CM-T54 evaluation system. The U-Boot boot-loader will start and you will get a command prompt in the terminal window.
{{Note|If the boot settings of your CM-T54 are different than default, you may need to press and hold ^C while turning the CM-T54 on, in order to get command prompt.}}

== Updating Firmware on the internal eMMC storage ==
CM-T54 firmware can be updated from an SD card, USB storage, mSATA drive or using network TFTP download.
All methods are performed from the U-Boot command line and include following common steps:
# Loading binary images from the selected media to the CM-T54 DRAM
# Flashing images to the on-board eMMC storage

=== Updating from TFTP server ===
* Setup a TFTP server
* Put the firmware binary images {{filename|MLO}} and {{filename|u-boot.img}} in the root directory of the TFTP server
* Setup U-Boot networking:
: for dynamic IP configuration:
<pre>
# dhcp
</pre>
: or for static IP configuration:
<pre>
# setenv ipaddr <ip address>
</pre>
* Setup the TFTP server ip address:
<pre>
# setenv serverip <server ip>
</pre>
* Load the SPL and U-Boot binaries into the memory:
<pre>
# tftp 82000000 MLO
# tftp 88080000 u-boot.img
</pre>
* Proceed to [[#Flashing images|Flashing images]] section

=== Updating from SD Card / USB storage / mSATA drive ===

Copy the firmware binary images {{filename|MLO}} and {{filename|u-boot.img}} from [http://compulab.co.il/products/computer-on-modules/cm-t54/#devres U-Boot package for CM-T54] to the root directory of the respective media.

==== Updating from SD card ====

* Insert the SD card into the P9 socket on SB-T54.
* Start the U-Boot MMC subsystem:
<pre>
# mmc dev 0
# mmc rescan
</pre>

* Check that the storage device is ready:
<pre>
# ls mmc 0
</pre>
* Load the firmware binaries into the memory:
<pre>
# load mmc 0 82000000 MLO
# load mmc 0 88080000 u-boot.img
</pre>
* Proceed to [[#Flashing images|Flashing images]] section

==== Updating from USB storage ====
* Plug the USB storage device into the USB host connector (P15 or P26) on SB-T54.
* Start the U-Boot USB subsystem:
<pre>
# usb start
</pre>
* Check that the storage device is ready:
<pre>
# ls usb 0
</pre>
* Load the firmware binaries into the memory:
<pre>
# load usb 0 82000000 MLO
# load usb 0 88080000 u-boot.img
</pre>
* Proceed to [[#Flashing images|Flashing images]] section

==== Updating from mSATA drive ====
* Plug the mSATA drive into mSATA connector (P8) on SB-T54.
* In case the SATA subsystem is not initialized correctly on system startup, run the following command:
<pre>
# scsi rescan
</pre>

* Check that the storage device is ready:
<pre>
# ls scsi 0
</pre>
* Load the firmware binaries into the memory:
<pre>
# load scsi 0 82000000 MLO
# load scsi 0 88080000 u-boot.img
</pre>
* Proceed to [[#Flashing images|Flashing images]] section

=== Flashing images ===
* Start the U-Boot MMC subsystem:
<pre>
# mmc dev 1
# mmc rescan
</pre>

* Write the firmware image into the on-board eMMC storage:
<pre>
mmc write 82000000 100 100
mmc write 88080000 200 300
</pre>

* Reset the CM-T54 evaluation platform.

== See also ==

* [[CM-T54: U-Boot: Firmware Overview]]
* [[CM-T54: U-Boot: Creating a bootable SD card]]
* [[U-Boot quick reference]]
* [[U-Boot images]]
* [[CM-T54: Linux: Getting started|Getting started with Linux on CM-T54]]
* [http://www.denx.de/wiki/U-Boot/Documentation U-Boot documentation]

[[Category:U-Boot]]
[[Category:CM-T54]]

CM-T54: U-Boot: Firmware Update - Revision history

Lifshitz at 10:59, 18 December 2014