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The bootloader U-Boot

7,827 bytes added, 16:27, 12 October 2023
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<meta name="description" content="All you need to know about the U-Boot bootloader for IGEP Processor Boards. How to cross compile, get stable versions and get the latest development versions, etc."></meta><meta name="keywords" content="U-Boot, IGEP, ARM, OMAP3, AM335x, OMAP5"></meta>__TOC__
= U=Overview==<span style="color: #000000;">This page is meant to be a starting point for people to learn build a u-Boot boot image and show to people the current status of different u-boot versions for IGEP platforms =Processor Boards.</span>
This page contains information about the customized ===<span style="color: #000000;">What is U-Boot?</span>===<span style="color: #000000;">[http://www.denx.de/wiki/U-Boot provided by ISEE, as well as the mainline / Das U-Boot] (Universal Bootloader) is an open source, primary boot loader used in embedded devices. Both can be used on Its primary purpose in the IGEP platformsshipping system is to load some operating system.</span>
<span style== Environment Settings =="color: #000000;">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.</span>
First of all setup the build environment sourcing this script
<pre>
$ source /usr/local/poky/eabi-glibc/arm/environment-setup
</pre>
or
<pre>
$ source /usr/local/poky/eabi-glibc/environment-setup-arm-none-linux-gnueabi
</pre>
if you have updated your SDK environment to latest version (see [[Ubuntu 8.04 IGEP v2.0 SDK Virtual Machine]])
== Mainline U-Boot, 2012.10 release ==
See ==Necessary package==In order to compile the u-boot it is '''necessary''' to set up the Cross Compiler correctly. In this [[U-Boot Mainline SeriesSet Up the Cross Compiler|post]] articleit is detailed how to set up correctly the Cross Compiler (and the desired version).
{{Message/Information Message|message== UThe following steps has been tested using '''Ubuntu 16.04''' and the '''4.9 version''' of the '''arm-Boot 2010.06linux-y series (stable) ='''<span class="mw-headline">'''gnueabihf''' compiler</span>}}
See In order to install the [[U-Boot 2010.06-y series]] article.Compiler we can use this command:
sudo apt install gcc-arm-linux-gnueabihf== Download U-Boot 2009Source== First of all, will be a distintion between '''NXP'''-processors products and '''ARM'''-processors products.11Because there are different kinds of U-y series (stable) ==Boot depending of each processor.
See the [[{| class="contenttable sortable" style="width: 887px;"|-! style="width: 344px;"|<span style="color: #000000;">'''Commercial Name'''</span>! style="width: 527px;"|<span style="color: #000000;">'''U-Boot 2009.11Series'''</span>|-| style="width: 344px;"|<span style="color: #000000;">IGEPv2 DM3730</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: 527px;"|<span dir="auto">U-boot-ARM</span> |-| style="width: 344px;"|<span style="color: #000000;">IGEP COM AQUILA AM335x</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: 527px;"|<span dir="auto">U-boot-ARM</span> |-| style="width: 344px;"|<span style="color: #000000;">IGEP SMARC AM335x</span>| style="width: 527px;"|<span dir="auto">U-boot-ARM</span> |-| style="width: 344px;"|<span style="color: #000000;">IGEP SMARC iMX6 </span>| style="width: 527px;"|<span dir="auto">U-boot-</span>Freescale-y series]] article.NXP|}
* Once we know which U-Boot have we will clone the corresponding git repository.
Download the IGEP U-Boot sources and follow next steps:
$ git clone git====<span dir="auto">U-Boot '''ARM''' Series</span>====: If we have an ARM series we will follow this table to get our source of U-Boot{| class="contenttable sortable" style="width: 881px; height: 298px;"|- style="height://git16.isee5781px;"! style="width: 855px; height: 16.biz/pub/scm5781px; text-align: center; vertical-align: middle;" colspan="2"|'''Downloading binary files/U-Boot Source'''|- style="height: 44px;"! style="background-color: #ffffff; width: 225px; height: 44px;"|'''<span id="Clone_the_u-boot_repo" class="mw-headline">Clone the u-boot-arm.gitrepository</span>'''| style="width: 621px; height: 44px;"| $ cd Clone the u-boot-arm $ repository using git checkout v2009.11-2 -b v2009.11-2.localaddress:
Configure for your board with,<span style="color: #000000;"> <code>git clone https://git.isee.biz/cgit/arm-boot/u-boot-arm.git</code></span>
$ make CROSS_COMPILE|- style=arm"height: 110px;"! style="background-nonecolor: #ffffff; width: 225px; height: 110px;"|<span id="Checkout_u-linuxboot_repo" class="mw-gnueabiheadline">Checkout u- boot repository<board/span>| style="width: 621px; height: 110px;"|Go to the u-boot-config>arm directory and checkout the isee_v2017.03 as:
where<span style="color:#002d87;"><code><span style="color: #002d87;"><span style="color: #000000;">cd u-boot-arm</span></span></code></span>
* <boardspan style="color: #000000;"><code>git checkout -configb isee_v2017.03 origin/isee_v2017.03</code> is omap3_igep0020_config for IGEP v2 platform.* <board-config/span> is omap3_igep0030_config for OMAP3 IGEP module.
Finally, build with|}
$ make CROSS_COMPILE=arm===<span dir="auto">U-Boot '''Freescale-NXP'''  Serie</span>====<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="width: 849px; height: 22px; text-align: center; vertical-align: middle;" colspan="2"|'''Downloading binary files/U-noneBoot Source'''|-linuxstyle="height: 44px;"! style="background-gnueabicolor: #ffffff; width: 223px;"|'''<span id="Clone_the_u-boot_repo" class="mw-headline">Clone the u-boot repository</span>'''| style="width: 626px; height: 44px;"|<span style="color: #000000;">Clone the u- boot repository using git address:</span>
The result will be an <span style="color: #000000;"><code>git clone https://git.isee.biz/cgit/arm-boot/u-boot-imx.bin file in local directory.git</code></span>
|- style="height: 89px;"! style="background-color: #ffffff; width: 223px;"|''' CHANGELOG <span id="Checkout_u-boot_repo" class="mw-headline">Checkout u-boot repository</span>'''| style="width: 626px; height: 89px;"|<span style="color: #000000;">Go to the u-boot-imx directory and checkout the isee_imx_v2017.03.y as:</span>
* [http<span style="color://git.igep.es/?p=pub/scm/#000000;"><code>cd u-boot-arm.git;a=commit;h=10f386973ff68d604323b1e7787a0f3bd3b3c381 2010-06-15 Release 2009.11-2]** improve SMSC LAN9221 throughput** add support for OMAP3 IGEP module (igep0030)imx</code></span>
<span style="color: #000000;"><code>git checkout 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> |} ==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:  <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: 872px; height: 317px;"|-! style="width: 196px;"|Module! style="width: 10px;"|Defconfig! style="width: 644px;"|Example|-| style="width: 196px;"|IGEPv2 DM3730| style="width: 10px;"|igep0020_defconfig| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0020_defconfig</code></span>|-| style="width: 196px;"|IGEP COM MODULE DM3730/AM3703| style="width: 10px;"|igep0030_defconfig| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0030_defconfig</code></span>|-| style="width: 196px;"|IGEP COM AQUILA AM335x| style="width: 10px;"|am335x_igep0033_defconfig | style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_igep0033_defconfig</code></span>|-| style="width: 196px;"|IGEPv5 OMAP5432| style="width: 10px;"| | style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-</code></span>|-| style="width: 196px;"|IGEP SMARC AM335x| style="width: 10px;"|am335x_igep0034_defconfig| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_igep0034_defconfig</code></span>|-| style="width: 196px;"|IGEP SMARC iMX6 Solo/Dual Lite| style="width: 10px;"|igep0046_imx6dl_2G_defconfig| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0046_imx6dl_2G_defconfig</code></span>|-| style="width: 196px;"|IGEP SMARC iMX6 Dual/ Quad| style="width: 10px;"|igep0046_imx6q_2G_defconfig| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0046_imx6q_2G_defconfig</code></span>|-| style="width: 196px;"|IGEP SMARC iMX6 Ultra-Lite / Ultra Ultra-Lite| style="width: 10px;"|igep0146_imx6ul_512M_defconfig| style="width: 644px;"|<span style="color: #000000;"><code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0146_imx6ul_512M_defconfig<br /></code></span>|} ==Build your U-BOOT==After running the defconfig. You can build the U-Boot by executing this command:  <span style="color: #000000;">  make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-</span>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'''<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 [[CategoryHow to prepare a bootable MicroSD Card|post]]. {{Message/Information Message|title=TITLE|message= <span style="color:Boot loaders#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>}}   ==Download Binary package==[http://downloads.isee.biz/ You can download binary packages from here.] ==<span id="What_next..." class="mw-headline">What next...</span>==After build u-boot you have to download and compile [[Linux Kernel 4.9.y|Ubootkernel]]
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