Difference between revisions of "The bootloader U-Boot"

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==Necessary package==
 
==Necessary package==
{| class="contenttable sortable"
+
In order to compile the u-boot it is '''necessary''' to set up the Cross Compiler correctly. In this [[Set Up the Cross Compiler|post]] it is detailed how to set up correctly the Cross Compiler (and the desired version).
|-
+
 
!| 
+
{{Message/Information Message|message=The following steps has been tested using '''Ubuntu 16.04''' and the '''4.9 version''' of the '''arm-linux-'''<span class="mw-headline">'''gnueabihf''' compiler</span>}}
!| 
 
|-
 
||
 
||
 
|-
 
||
 
||
 
|}
 
  
 +
In order to install the Compiler we can use this command:
  
==Download & Prepare your U-BOOT==
+
sudo apt install gcc-arm-linux-gnueabihf
 Will be a distintion between NXP-processors products and ARM-processors products.
+
==Download U-Boot Source==
 +
 First of all, will be a distintion between '''NXP'''-processors products and '''ARM'''-processors products. Because there are different kinds of U-Boot depending of each processor.
  
 
{| class="contenttable sortable" style="width: 887px;"
 
{| class="contenttable sortable" style="width: 887px;"
Line 34: Line 28:
 
|-
 
|-
 
| style="width: 344px;"|<span style="color: #000000;">IGEPv2 DM3730</span>
 
| style="width: 344px;"|<span style="color: #000000;">IGEPv2 DM3730</span>
| style="width: 527px;"|<span dir="auto">ARM</span>
+
| style="width: 527px;"|<span dir="auto">U-boot-ARM</span>
 
|-
 
|-
 
| style="width: 344px;"|<span style="color: #000000;">IGEP COM MODULE </span>DM3730/AM3703
 
| style="width: 344px;"|<span style="color: #000000;">IGEP COM MODULE </span>DM3730/AM3703
| style="width: 527px;"|<span dir="auto">ARM</span>
+
| style="width: 527px;"|<span dir="auto">U-boot-ARM</span> 
 
|-
 
|-
 
| style="width: 344px;"|<span style="color: #000000;">IGEP COM AQUILA AM335x</span>
 
| style="width: 344px;"|<span style="color: #000000;">IGEP COM AQUILA AM335x</span>
| style="width: 527px;"|<span style="color: #000000;"><span dir="auto">ARM</span> </span>
+
| style="width: 527px;"|<span style="color: #000000;"><span dir="auto">U-boot-ARM</span> </span>
 
|-
 
|-
 
| style="width: 344px;"|<span style="color: #000000;">IGEPv5 OMAP5432</span>
 
| style="width: 344px;"|<span style="color: #000000;">IGEPv5 OMAP5432</span>
| style="width: 527px;"|<span dir="auto">ARM</span>
+
| style="width: 527px;"|<span dir="auto">U-boot-ARM</span> 
 
|-
 
|-
 
| style="width: 344px;"|<span style="color: #000000;">IGEP SMARC AM335x</span>
 
| style="width: 344px;"|<span style="color: #000000;">IGEP SMARC AM335x</span>
| style="width: 527px;"|<span dir="auto">ARM</span>
+
| style="width: 527px;"|<span dir="auto">U-boot-ARM</span> 
 
|-
 
|-
| style="width: 344px;"|<span style="color: #000000;">IGEP SMARC iMX6 Solo</span>
+
| style="width: 344px;"|<span style="color: #000000;">IGEP SMARC iMX6 </span>
| style="width: 527px;"|Freescale-NXP
+
| style="width: 527px;"|<span dir="auto">U-boot-</span>Freescale-NXP
|-
 
| style="width: 344px;"|<span style="color: #000000;">IGEP SMARC iMX6 Dual Lite</span>
 
| style="width: 527px;"|Freescale-NXP
 
|-
 
| style="width: 344px;"|<span style="color: #000000;">IGEP SMARC iMX6 Dual</span>
 
| style="width: 527px;"|Freescale-NXP
 
|-
 
| style="width: 344px;"|<span style="color: #000000;">IGEP SMARC iMX6 Quad</span>
 
| style="width: 527px;"|Freescale-NXP
 
 
|}
 
|}
Once we know which U-Boot have we will clone the corresponding git repository
 
  
===<span dir="auto">U-Boot '''ARM''' Serie</span>===
+
* Once we know which U-Boot have we will clone the corresponding git repository.
<div class="clearfix">First we will download the U-Boot file for be able to make the configuration.</div>
+
 
<div class="clearfix"></div>
+
 
{| class="contenttable sortable" style="width: 888px; height: 327px;"
+
====<span dir="auto">U-Boot '''ARM''' Series</span>====
|- style="height: 28px;"
+
: If we have an ARM series we will follow this table to get our source of U-Boot
! style="width: 862px; height: 28px; text-align: center; vertical-align: middle;" colspan="2"|
+
{| class="contenttable sortable" style="width: 881px; height: 298px;"
====Downloading binary files====
+
|- style="height: 16.5781px;"
|- style="height: 35.5781px;"
+
! style="width: 855px; height: 16.5781px; text-align: center; vertical-align: middle;" colspan="2"|'''Downloading binary files/U-Boot Source'''
! style="background-color: #ffffff; height: 35.5781px; width: 213px;"|'''<span id="Clone_the_u-boot_repo" class="mw-headline">Clone the u-boot repo</span>'''
+
|- style="height: 44px;"
| style="width: 640px; height: 44px;"|
+
! style="background-color: #ffffff; width: 225px; height: 44px;"|'''<span id="Clone_the_u-boot_repo" class="mw-headline">Clone the u-boot repository</span>'''
 +
| style="width: 621px; height: 44px;"|
 
Clone the u-boot repository using git address:
 
Clone the u-boot repository using git address:
  
<span style="color: #002d87;"><code><span style="color: #002d87;">$ git@git.isee.biz:arm-boot/u-boot-arm.git</span></code></span> 
+
<span style="color: #000000;"><code>git clone git@git.isee.biz:arm-boot/u-boot-arm.git</code> </span>
  
 
or
 
or
  
 <code><span style="color: #002d87;">$ git clone</span> [https://git.isee.biz/arm-boot/u-boot-arm.git https://git.isee.biz/arm-boot/u-boot-arm.git]</code>
+
<span style="color: #000000;"> <code>git clone [https://git.isee.biz/arm-boot/u-boot-arm.git https][https://git.isee.biz/arm-boot/u-boot-arm.git ://git.isee.biz/arm-boot/u-boot-arm.git]</code></span>
  
 
|- style="height: 110px;"
 
|- style="height: 110px;"
! style="background-color: #ffffff; height: 110px; width: 213px;"|<span id="Checkout_u-boot_repo" class="mw-headline">Checkout u-boot repo </span>
+
! style="background-color: #ffffff; width: 225px; height: 110px;"|<span id="Checkout_u-boot_repo" class="mw-headline">Checkout u-boot repository</span>
| style="width: 640px; height: 110px;"|
+
| style="width: 621px; height: 110px;"|
 
Go to the u-boot-arm directory and checkout the isee_v2017.03 as:
 
Go to the u-boot-arm directory and checkout the isee_v2017.03 as:
  
<span style="color: #002d87; font-family: Verdana, Arial, Helvetica, sans-serif; white-space: normal;"><code><span style="color: #002d87;">$ cd u-boot-arm</span></code></span>
+
<span style="color: #002d87;"><code><span style="color: #002d87;"><span style="color: #000000;">cd u-boot-arm</span></span></code></span>
  
<span style="color: #002d87; font-family: Verdana, Arial, Helvetica, sans-serif; white-space: normal;"><code><span style="color: #002d87;">$ git checkout remotes/origin/isee_v2017.03 -b isee_v2017.03</span></code> </span>
+
<span style="color: #000000;"><code>git checkout remotes/origin/isee_v2017.03 -b isee_v2017.03 </code></span>
  
 
|}
 
|}
  
===<span dir="auto">U-Boot '''Freescale-NXP ''' Serie</span>===
+
 
<div class="clearfix">First we will download the U-Boot file for be able to make the configuration.</div>
+
====<span dir="auto">U-Boot '''Freescale-NXP'''  Serie</span>====
{| class="contenttable sortable" style="font-size: 15.024px; width: 881px;"
+
<div class="clearfix">
 +
: If we have an Freescale-NXP series we will follow this table to get our source of U-Boot
 +
</div>
 +
{| class="contenttable sortable" style="width: 883px; height: 263px;"
 
|- style="height: 22px;"
 
|- style="height: 22px;"
! style="width: 851px; height: 22px; text-align: center; vertical-align: middle;" colspan="2"|
+
! style="width: 849px; height: 22px; text-align: center; vertical-align: middle;" colspan="2"|'''Downloading binary files/U-Boot Source'''
====Downloading binary files====
 
 
|- style="height: 44px;"
 
|- style="height: 44px;"
! style="background-color: #ffffff; width: 205px;"|'''<span id="Clone_the_u-boot_repo" class="mw-headline">Clone the u-boot repo</span>'''
+
! style="background-color: #ffffff; width: 223px;"|'''<span id="Clone_the_u-boot_repo" class="mw-headline">Clone the u-boot repository</span>'''
| style="width: 646px; height: 44px;"|
+
| style="width: 626px; height: 44px;"|
Clone the u-boot repository using git address:
+
<span style="color: #000000;">Clone the u-boot repository using git address:</span>
  
<span style="color: #002d87;"><code><span style="color: #002d87;">$ git clone git@git.isee.biz:arm-boot/u-boot-imx.git</span></code></span>
+
<span style="color: #000000;"><code>git clone git@git.isee.biz:arm-boot/u-boot-imx.git</code></span>
  
or
+
<span style="color: #000000;">or</span>
  
 <code><span style="color: #002d87;">$ git clone</span> [https://git.isee.biz/arm-boot/u-boot-imx.git https://git.isee.biz/arm-boot/u-boot-imx.git]</code>
+
<span style="color: #000000;"> <code>git clone [https://git.isee.biz/arm-boot/u-boot-imx.git https://git.isee.biz/arm-boot/u-boot-imx.git]</code></span>
  
 
|- style="height: 89px;"
 
|- style="height: 89px;"
! style="background-color: #ffffff; width: 205px;"|'''<span id="Checkout_u-boot_repo" class="mw-headline">Checkout u-boot repo </span>'''
+
! style="background-color: #ffffff; width: 223px;"|'''<span id="Checkout_u-boot_repo" class="mw-headline">Checkout u-boot repository</span>'''
| style="width: 646px; height: 89px;"|
+
| style="width: 626px; height: 89px;"|
Go to the u-boot-imx directory and checkout the version 2015.04.y as:
+
<span style="color: #000000;">Go to the u-boot-imx directory and checkout the isee_imx_v2017.03.y as:</span>
  
<span style="color: #002d87;"><code><span style="color: #002d87;">$ cd u-boot-imx</span></code></span>
+
<span style="color: #000000;"><code>cd u-boot-imx</code></span>
  
<span style="color: #002d87;"><code><span style="color: #002d87;">$ git checkout remotes/origin/isee_imx_v2017.03_4.9.11_1.0.0_ga -b isee_imx_v2017.03_4.9.11_1.0.0_ga</span></code> </span>
+
<span style="color: #000000;"><code>git checkout remotes/origin/isee_imx_v2017.03_4.9.11_1.0.0_ga -b isee_imx_v2017.03_4.9.11_1.0.0_ga </code></span>
  
 
|}
 
|}
  
Once we have downloaded we will execute the file called '''defconfig,''' that it variates in function of each model.
+
==Prepare your U-BOOT==
 +
Once we have downloaded the U-Boot source. We will '''execute''' the file called '''defconfig''' (default configuration) that it variates in function of each model.
  
 
In order to load the default configuration of the target board, we have to write the following command:
 
In order to load the default configuration of the target board, we have to write the following command:
  
.,x´dad
+
<span style="color: #000000;"> make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- [your_defconfig]</span>
 
+
* In the following table it can be found the name of each default configuration associated to each IGEP PROCESSORS BOARDS:
 
 
  
  
  
{| class="contenttable sortable" style="width: 882px; height: 1296px;"
+
{| class="contenttable sortable" style="width: 872px; height: 317px;"
 
|-
 
|-
! style="width: 854px; text-align: center; vertical-align: middle;" colspan="3"| 
+
! style="width: 196px;"|Module
|}
+
! style="width: 10px;"|Defconfig
 
+
! style="width: 644px;"|Example
===<span id="Set_the_board_configuration" class="mw-headline">Set the board</span><span id="Set_the_board_configuration" class="mw-headline"> configuratio</span><span id="Set_the_board_configuration" class="mw-headline">n('''Prepare your U-BOOT''')</span>===
 
 
|-
 
|-
! style="background-color: #f2f2f2; width: 227px;"|Model
+
| style="width: 196px;"|IGEPv2 DM3730
! style="background-color: #f2f2f2; width: 48px;"|defconfig
+
| style="width: 10px;"|igep0020_defconfig
! style="width: 579px; background-color: #f2f2f2;"|Example
+
| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0020_defconfig</code></span>
 
|-
 
|-
! style="background-color: #ffffff; width: 227px;"|IGEPv2 DM3730
+
| style="width: 196px;"|IGEP COM MODULE DM3730/AM3703
| style="background-color: #ffffff; width: 48px; text-align: center; vertical-align: middle;"|igep0020_defconfig
+
| style="width: 10px;"|igep0030_defconfig
| style="width: 579px;"|
+
| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0030_defconfig</code></span>
<span style="color: #002d87;">$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0020_defconfig</span>
 
 
|-
 
|-
! style="background-color: #ffffff; width: 227px;"|IGEP COM Module DM3730/AM3703
+
| style="width: 196px;"|IGEP COM AQUILA AM335x
| style="background-color: #ffffff; width: 48px; text-align: center; vertical-align: middle;"|igep0030_defconfig
+
| style="width: 10px;"|
| style="width: 579px;"|
+
am335x_igep0033_defconfig
<span style="color: #002d87;">$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0030_defconfig </span>
+
 
 +
| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_igep0033_defconfig</code></span>
 
|-
 
|-
! style="background-color: #ffffff; width: 227px;"|IGEP COM AQUILA AM335x
+
| style="width: 196px;"|IGEPv5 OMAP5432
| style="background-color: #ffffff; width: 48px; text-align: center; vertical-align: middle;"|am335x_igep0033_defconfig
+
| style="width: 10px;"| 
| style="width: 579px;"|
+
| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-</code></span>
<span style="color: #002d87;">$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_igep0033_defconfig</span>
 
 
|-
 
|-
! style="background-color: #ffffff; width: 227px;"|IGEPv5 OMAP5432
+
| style="width: 196px;"|IGEP SMARC AM335x
| style="background-color: #ffffff; width: 48px; text-align: center; vertical-align: middle;"| 
+
| style="width: 10px;"|am335x_igep0034_defconfig
| style="width: 579px;"|
+
| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_igep0034_defconfig</code></span>
<span style="color: #002d87;">----</span>
 
 
|-
 
|-
! style="background-color: #ffffff; width: 227px;"|IGEP SMARC AM335x 
+
| style="width: 196px;"|IGEP SMARC iMX6 Solo/Dual Lite
| style="background-color: #ffffff; width: 48px; text-align: center; vertical-align: middle;"|am335x_igep0034_defconfig
+
| style="width: 10px;"|igep0046_imx6dl_2G_defconfig
| style="width: 579px;"|
+
| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0046_imx6dl_2G_defconfig</code></span>
<span style="color: #002d87;">$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_igep0034_defconfig</span>
 
 
|-
 
|-
! style="background-color: #ffffff; width: 227px;"|'''IGEP0046 SMARC Solo'''
+
| style="width: 196px;"|IGEP SMARC iMX6 Dual/ Quad
| style="background-color: #ffffff; width: 48px; text-align: center; vertical-align: middle;"| 
+
| style="width: 10px;"|igep0046_imx6q_2G_defconfig
| style="width: 579px;"|
+
| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0046_imx6q_2G_defconfig</code></span>
<span style="color: #002d87;">$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- xxxxx </span>
 
 
|-
 
|-
! style="background-color: #ffffff; width: 227px;"|'''IGEP0046 SMARC Dual lite'''
+
| style="width: 196px;"|IGEP SMARC iMX6 Ultra-Lite / Ultra Ultra-Lite
| style="background-color: #ffffff; width: 48px; text-align: center; vertical-align: middle;"|igep0046_imx6dl_2G_defconfig
+
| style="width: 10px;"|igep0146_imx6ul_512M_defconfig
| style="width: 579px;"|
+
| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0146_imx6ul_512M_defconfig<br /></code></span>
<span style="color: #002d87;">$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0046_imx6dl_2G_defconfig</span><span style="color: #002d87;"> </span>
 
|-
 
! style="background-color: #ffffff; width: 227px;"| '''IGEP0046 SMARC Dual '''
 
| style="background-color: #ffffff; width: 48px; text-align: center; vertical-align: middle;"| 
 
| style="width: 579px;"|<span style="color: #002d87;"> </span>
 
<span style="color: #002d87;">$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- xxxxx</span><span style="color: #002d87;"> </span>
 
|-
 
! style="background-color: #ffffff; width: 227px;"| '''IGEP0046 SMARC Quad'''
 
| style="background-color: #ffffff; width: 48px; text-align: center; vertical-align: middle;"|igep0046_imx6q_2G_defconfig
 
| style="width: 579px;"|
 
<span style="color: #002d87;"> $ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0046_imx6q_2G_defconfig</span>
 
 
|}
 
|}
  
 +
==Build your U-BOOT==
 +
After running the defconfig. You can build the U-Boot by executing this command:
  
====<span id="Build_u-boot" class="mw-headline">Build u-boot</span>====
+
<span style="color: #000000;">  make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-</span>
After running the defconfig. You can build u-boot by executing this command:
+
Once the compile process has sucesfully finished, we will find the resulting files inside the u-boot root folder. Depending on the processor the generated files will be different:
  
 <span style="color: #002d87;"><code><span style="color: #002d87;">$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-</span></code></span>
+
* The result for '''ARM''' processor based board will be a '''MLO''' and '''u-boot.img'''.
 +
* The result for '''Freescale'''-'''NXP'''<strong style="font-size: 0.939em;"> </strong><span style="font-size: 0.939em;">processor based will be a </span><strong style="font-size: 0.939em;">u-boot.imx.</strong>
  
  
 +
Finally we can copy this files in a '''boot device''', for example, a microSD Memory Card. It is explained in the following [[How to prepare a bootable MicroSD Card|post]].
  
* The result for '''Texas Instruments''' processor based board will be a '''MLO''' and '''u-boot.img'''.
+
{{Message/Information Message|title=TITLE|message= <span style="color: #000000;">In case of the Freescale-NXP Porcessor Boards, it is not possible to copy directly the u-boot.imx file. It is necessary to copy in the first blocks of the boot device using the dd command. It is explained in the following post [[How to prepare a bootable MicroSD Card|How to prepare a bootable MicroSD Card]].</span>}}
* The result for <strong style="font-size: 0.939em;">iMX6 </strong><span style="font-size: 0.939em;">processor based will be a </span><strong style="font-size: 0.939em;">u-boot.imx.</strong>
 
  
  
You can install these files, for example, in the boot partition of a SD-card.  
 
  
 
===<span id="What_next..." class="mw-headline">What next...</span>===
 
===<span id="What_next..." class="mw-headline">What next...</span>===
After build u-boot you can use it for boot the board, exist several options for boot, check the Hardware Reference Manual about the options available for your board.
+
After build u-boot you have to download and compile [[Linux Kernel 4.9.y|kernel]]
 
 
* [[How to boot from MicroSD Card|Boot from MicroSD Card.]]
 
* Boot from NAND flash.
 
* Boot from eMMC.
 
* Boot from USB.
 
* Boot from Network.
 
 
 
 
 
==<span style="color: #999999;">u-boot Freescale-NXP iMX6 series</span>==
 
* <span style="color: #999999;">[[U-boot Freescale-NXP iMX6 Series|u-boot Freescale-NXP iMX6 Series]]</span>
 
 
 
==<span style="color: #999999;">u-boot Texas Instruments AM335x, OMAP3, DM3730, OMAP5432 series</span>==
 
* <span style="color: #999999;">[[u-boot_Texas_Instruments_Series|u-boot Texas Instruments Series]]</span>
 
 
 
<span style="color: #999999;">[[Category:U-Boot]]</span>
 

Revision as of 13:21, 27 November 2018

Overview

This page is meant to be a starting point for people to learn build a u-boot image and show to people the current status of different u-boot versions for IGEP Processor Boards.

What is U-Boot?

Das U-Boot (Universal Bootloader) is an open source, primary boot loader used in embedded devices. Its primary purpose in the shipping system is to load some operating system.

That means that U-Boot is necessary to perform a certain task, but it's nothing you want to throw any significant resources at. Typically U-Boot is stored in relatively small NOR flash memory, which is expensive compared to the much larger NAND devices often used to store the operating system and the application.


Necessary package

In order to compile the u-boot it is necessary to set up the Cross Compiler correctly. In this post it is detailed how to set up correctly the Cross Compiler (and the desired version).

Information.jpg The following steps has been tested using Ubuntu 16.04 and the 4.9 version of the arm-linux-gnueabihf compiler

In order to install the Compiler we can use this command:

sudo apt install gcc-arm-linux-gnueabihf

Download U-Boot Source

 First of all, will be a distintion between NXP-processors products and ARM-processors products. Because there are different kinds of U-Boot depending of each processor.

Commercial Name U-Boot Series
IGEPv2 DM3730 U-boot-ARM
IGEP COM MODULE DM3730/AM3703 U-boot-ARM 
IGEP COM AQUILA AM335x U-boot-ARM 
IGEPv5 OMAP5432 U-boot-ARM 
IGEP SMARC AM335x U-boot-ARM 
IGEP SMARC iMX6  U-boot-Freescale-NXP
  • Once we know which U-Boot have we will clone the corresponding git repository.


U-Boot ARM Series

If we have an ARM series we will follow this table to get our source of U-Boot
Downloading binary files/U-Boot Source
Clone the u-boot repository

Clone the u-boot repository using git address:

git clone git@git.isee.biz:arm-boot/u-boot-arm.git 

or

 git clone https://git.isee.biz/arm-boot/u-boot-arm.git

Checkout u-boot repository

Go to the u-boot-arm directory and checkout the isee_v2017.03 as:

cd u-boot-arm

git checkout remotes/origin/isee_v2017.03 -b isee_v2017.03 


U-Boot Freescale-NXP  Serie

If we have an Freescale-NXP series we will follow this table to get our source of U-Boot
Downloading binary files/U-Boot Source
Clone the u-boot repository

Clone the u-boot repository using git address:

git clone git@git.isee.biz:arm-boot/u-boot-imx.git

or

 git clone https://git.isee.biz/arm-boot/u-boot-imx.git

Checkout u-boot repository

Go to the u-boot-imx directory and checkout the isee_imx_v2017.03.y as:

cd u-boot-imx

git checkout remotes/origin/isee_imx_v2017.03_4.9.11_1.0.0_ga -b isee_imx_v2017.03_4.9.11_1.0.0_ga 

Prepare your U-BOOT

Once we have downloaded the U-Boot source. We will execute the file called defconfig (default configuration) that it variates in function of each model.

In order to load the default configuration of the target board, we have to write the following command:

 make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- [your_defconfig]
  • In the following table it can be found the name of each default configuration associated to each IGEP PROCESSORS BOARDS:


Module Defconfig Example
IGEPv2 DM3730 igep0020_defconfig make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0020_defconfig
IGEP COM MODULE DM3730/AM3703 igep0030_defconfig make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0030_defconfig
IGEP COM AQUILA AM335x

am335x_igep0033_defconfig

make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_igep0033_defconfig
IGEPv5 OMAP5432   make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-
IGEP SMARC AM335x am335x_igep0034_defconfig make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_igep0034_defconfig
IGEP SMARC iMX6 Solo/Dual Lite igep0046_imx6dl_2G_defconfig make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0046_imx6dl_2G_defconfig
IGEP SMARC iMX6 Dual/ Quad igep0046_imx6q_2G_defconfig make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0046_imx6q_2G_defconfig
IGEP SMARC iMX6 Ultra-Lite / Ultra Ultra-Lite igep0146_imx6ul_512M_defconfig make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0146_imx6ul_512M_defconfig

Build your U-BOOT

After running the defconfig. You can build the U-Boot by executing this command:

  make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-

Once the compile process has sucesfully finished, we will find the resulting files inside the u-boot root folder. Depending on the processor the generated files will be different:

  • The result for ARM processor based board will be a MLO and u-boot.img.
  • The result for Freescale-NXP processor based will be a u-boot.imx.


Finally we can copy this files in a boot device, for example, a microSD Memory Card. It is explained in the following post.

Information.jpg In case of the Freescale-NXP Porcessor Boards, it is not possible to copy directly the u-boot.imx file. It is necessary to copy in the first blocks of the boot device using the dd command. It is explained in the following post How to prepare a bootable MicroSD Card.


What next...

After build u-boot you have to download and compile kernel