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The bootloader U-Boot

6,628 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__
== Overview ==<span style="color: #000000;">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.</span>
This page ===<span style="color: #000000;">What is meant to be a starting point for people to learn build a uU-Boot?</span>===<span style="color: #000000;">[http://www.denx.de/wiki/U-Boot/ Das U-Boot] (Universal Bootloader) is an open source, primary boot image and show loader used in embedded devices. Its primary purpose in the shipping system is to people the current status of different u-boot versions for IGEP Processor Boardsload some operating system. </span>
<span style= What "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>
[http://www.denx.de/wiki/U-Boot/ Das U-Boot] (Universal Bootloader) is an open source, primary boot loader used in embedded devices. It is available for a number of different computer architectures, including PPC, ARM, MIPS, AVR32, x86.
= How to cross compile the linux kernel =
==Necessary package==In order to build compile the Uu-Boot for IGEP Processor boards you should boot it is '''necessary''' to set up the CROSS_COMPILE variableCross Compiler correctly. In this [[Set this Up the Cross Compiler|post]] it is detailed how to set up correctly the prefix of your toolchain Cross Compiler (including and the trailing dash "-"desired version). So if your toolchain is invoked as say arm-linux-gnueabi-gcc, just chop off that trailing gcc and that's what you use: arm-linux-gnu-.
As example, once you{{Message/Information Message|message=The following steps has been tested using '''Ubuntu 16.04''' and the '''ve downloaded 4.9 version''' of the u'''arm-linux-'''<span class="mw-boot source, you should follow these steps:headline">'''gnueabihf''' compiler</span>}}
make CROSS_COMPILE=[cross compiler] [board config] make CROSS_COMPILE=[cross compiler]In order to install the Compiler we can use this command:
The result sudo apt install gcc-arm-linux-gnueabihf==Download U-Boot Source== First of all, will be a MLO distintion between '''NXP'''-processors products and a u'''ARM'''-boot.img fileprocessors products. You can install these files, for example, in the boot partition Because there are different kinds of a SDU-cardBoot depending of each processor.
{| class= Stable "contenttable sortable" style="width: 887px;"|-! style="width: 344px;"|<span style="color: #000000;">'''Commercial Name'''</span>! style="width: 527px;"|<span style="color: #000000;">'''U-Boot Series'''</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-NXP|}
For OMAP3 based platforms, ISEE do not support u* Once we know which U-boot, instead of, ISEE provides [[The IGEP X-loader]]Boot have we will clone the corresponding git repository.
At this time there is no u-boot stable version for Sitara AM335x based platforms either OMAP5 based platforms. You can try the unstable versions.
= Unstable ===<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: 16.5781px;"! style="width: 855px; height: 16.5781px; 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 repository</span>'''| style="width: 621px; height: 44px;"|Clone the u-boot repository using git address:
<span style="color: rgb(255, 0, 0)#000000;">'''NOTE <code>git clone https: These //git.isee.biz/cgit/arm-boot/u-boot series are where the development work takes place and you should use this if you're after to work with the latest cutting edge developments-arm. It is possible trunk can suffer temporary periods of instability while new features are developed and if this is undesirable we recommend using one of the release branches. USE AT YOUR OWN RISK'''git</code></span>
The mainline series are supported by IGEP Platforms based on|- style="height: 110px;"! style="background-color: #ffffff; width: 225px; height: 110px;"|<span id="Checkout_u-boot_repo" class="mw-headline">Checkout u-boot repository</span>| style="width: 621px; height: 110px;"|Go to the u-boot-arm directory and checkout the isee_v2017.03 as:
<gallery heightsspan style="100pxcolor: #002d87;">File<code><span style="color:omap3.pngFile#002d87;"><span style="color:am335x.pngFile:omap5.png#000000;">cd u-boot-arm</span></span></code></galleryspan>
See the [[U<span style="color: #000000;"><code>git checkout -Boot Mainline Series]] articleb isee_v2017.03 origin/isee_v2017.03</code></span>
= End Of Life U-Boot (EOL) =|}
An ====<span dir="End 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 LifeU-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-Boot means that its support will stop and all Source'''|- style="height: 44px;"! style="background-color: #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 users are urged to upgrade to a new version.u-boot repository using git address:</span>
<span style== U"color: #000000;"><code>git clone https://git.isee.biz/cgit/arm-boot/u-boot-Boot 2010imx.06-y series ==git</code></span>
<span |- style="height: 89px;"! style="background-color: rgb(255, 0, 0)#ffffff; width: 223px;">|'''NOTE: These kernel series are end<span id="Checkout_u-boot_repo" class="mw-ofheadline">Checkout u-life, dead, gone, buriedboot 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>
The 2010.06-y <span style="color: #000000;"><code>cd u-boot series are supported by IGEP Platforms based on:-imx</code></span>
<gallery heightsspan style="100pxcolor: #000000;">File:omap3<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.png0_ga </code></galleryspan>
See the [[U-Boot 2010.06-y series]] article.|}
== Prepare your U-BOOT==Once we have downloaded the U-Boot 2009source. We will '''execute''' the file called '''defconfig''' (default configuration) that it variates in function of each model.11-y series ==
<span style="color: rgb(255, 0In order to load the default configuration of the target board, 0);">'''NOTEwe have to write the following command: These kernel series are end-of-life, dead, gone, buried'''</span>
The 2000.11 <span style="color: #000000;"> make ARCH=arm CROSS_COMPILE=arm-y ulinux-boot series are supported by gnueabihf- [your_defconfig]</span>* In the following table it can be found the name of each default configuration associated to each IGEP Platforms based onPROCESSORS BOARDS:
<gallery heights="100px">
File:omap3.png
</gallery>
See the [[U-Boot 2009.11-y series]] article.
{| 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 [[How to prepare a bootable MicroSD Card|post]]. {{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>}}   ==Download Binary package==[Categoryhttp:Boot loaders//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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