CL-SOM-iMX7: U-Boot: Building Images - Revision history

Benjamin at 15:07, 28 June 2023

2023-06-28T15:07:52Z

Urim at 16:26, 26 October 2017

2017-10-26T16:26:38Z

Urim: Replacing page with '{{:Transclusion: CL-SOM-iMX7: U-Boot: Building Images}} Category:U-Boot Category:CL-SOM-iMX7'

2017-10-18T10:40:14Z

Replacing page with '{{:Transclusion: CL-SOM-iMX7: U-Boot: Building Images}} Category:U-Boot Category:CL-SOM-iMX7'

Grinberg at 06:43, 5 April 2017

2017-04-05T06:43:39Z

New page

== Overview ==
CL-SOM-iMX7 firmware consists of single U-Boot binary image.
It is based on [http://www.denx.de/wiki/U-Boot/WebHome U-Boot] source code.
U-Boot is invoked by the CPU internal boot ROM code of the i.MX7 SoC.
U-Boot initializes hardware modules necessary for system boot and loads the operating system.

== Building Firmware images for CL-SOM-iMX7 ==
=== Getting U-Boot sources ===
There are two ways to get U-Boot sources that can be used as a baseline for CL-SOM-iMX7 U-Boot.
You can create a copy of "Das U-Boot" source tree or download a snapshot and extract it.
We assume that you have created {{filename|/home/development/cl-som-imx7/u-boot}} directory for CL-SOM-iMX7 u-boot development.

==== Snapshot download ====
* Download [http://git.denx.de/?p=u-boot.git;a=snapshot;h=8cbb389bb3da80cbf8911f8386cbff92c6a78afe;sf=tgz v2016.09] snapshot with your web browser.
* Extract the downloaded archive {{filename|u-boot-8cbb389.tar.gz}}
<pre>
cd /home/development/cl-som-imx7/u-boot
tar xvf /path/to/downloaded/u-boot-8cbb389.tar.gz
mv u-boot u-boot-cl-som-imx7
</pre>
: This will create {{filename|/home/development/cl-som-imx7/u-boot/u-boot-cl-som-imx7}} directory containing U-Boot source code tree.
* Apply the CL-SOM-iMX7 patch
<pre>
cd /home/development/cl-som-imx7/u-boot/u-boot-cl-som-imx7
patch -p1 < /path/to/cl-som-imx7-u-boot-package/u-boot/u-boot-v2016.09-cl-som-imx7-*.patch
</pre>

==== Git clone ====
* Install [http://git-scm.com/ git] version control system.
* Create a clone of U-Boot tree
<pre>
cd /home/development/cl-som-imx7/u-boot
git clone git://git.denx.de/u-boot.git u-boot-cl-som-imx7
cd /home/development/cl-som-imx7/u-boot/u-boot-cl-som-imx7
</pre>
* Create a branch for CL-SOM-iMX7 development. The CL-SOM-iMX7 patches are generated vs. v2016.09 tag (8cbb389bb3da80cbf8911f8386cbff92c6a78afe commit) in the U-Boot tree. It is recommended to use exactly the same baseline to avoid merge conflicts.
<pre>
git checkout -b cl-som-imx7-dev v2016.09
</pre>
* Apply CL-SOM-iMX7 patch
<pre>
git am /path/to/cl-som-imx7-u-boot-package/u-boot/patches/*.patch
</pre>

=== Building the firmware images ===
* First, compileU-Boot. The following commands create the {{filename|u-boot.imx}} binary (along with other image types):
<pre>
export ARCH=arm
export CROSS_COMPILE=arm-none-linux-eabi-
make mrproper
make cl_som_imax7_defconfig && make
</pre>
* Rename the U-Boot binary image file:
<pre>
cp u-boot.imx cl-som-imx7-firmware
</pre>
* You can now install the {{filename|cl-som-imx7-firmware}} file into an SD card or CL-SOM-iMX7 SPI flash.

[[Category:U-Boot]]
[[Category:CL-SOM-iMX7]]

@@ Line 8: / Line 8: @@
 == Building Firmware images for CL-SOM-iMX7 ==
 === Getting U-Boot sources ===
 We assume that you have created {{filename|/home/development/cl-som-imx7/u-boot}} directory for the the CL-SOM-iMX7 U-Boot development.

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 {{:Transclusion: CL-SOM-iMX7: U-Boot: Building Images}}
 [[Category:U-Boot]]
 [[Category:CL-SOM-iMX7]]