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The bootloader U-Boot

8 bytes removed, 13:21, 27 November 2018
→‎Prepare your U-BOOT
==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:
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 the of each processor.  
{| class="contenttable sortable" style="width: 887px;"
|-
| style="width: 344px;"|<span style="color: #000000;">IGEP SMARC iMX6 </span>
| style="width: 527px;"|<span dir="auto">U-boot-</span>Freescale-NXP-Freescale
|}
 
* Once we know which U-Boot have we will clone the corresponding git repository.
 
====<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;"
Clone the u-boot repository using git address:
<span style="color: #002d87000000;"><code><span style="color: #002d87;">$ git clone git@git.isee.biz:arm-boot/u-boot-arm.git</span></code> </span> 
or
 <code><span style="color: #002d87000000;">$ git clone </spancode> 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;"
Go to the u-boot-arm directory and checkout the isee_v2017.03 as:
<span style="color: #002d87;"><code><span style="color: #002d87;">$ <span style="color: #000000;">cd u-boot-arm</span></span></code></span>
<code><span style="color: #002d87000000;">$ <code>git checkout remotes/origin/isee_v2017.03 -b isee_v2017.03 </spancode></codespan>
|}
! 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 u-boot repository using git address:</span>
<span style="color: #002d87000000;"><code><span style="color: #002d87;">$ git clone git@git.isee.biz:arm-boot/u-boot-imx.git</span></code></span>
<span style="color: #000000;">or</span>
 <code><span style="color: #002d87000000;">$ git clone </spancode> 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="background-color: #ffffff; width: 223px;"|'''<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>
<code><span style="color: #002d87000000;">$ <code>cd u-boot-imx</spancode></codespan>
<code><span style="color: #002d87000000;">$ <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_ga0_ga </spancode> </codespan>
|}
 
==Prepare your U-BOOT==
Once we have downloaded the U-Boot source. We will '''execute''' the file called '''defconfig''' that  (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: #002d87000000;"> $ make  make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-[defconfigyour_defconfig]</span>* In the following table we will show you our diferent models with their defconfig and an example with our compiler.it can be found the name of each default configuration associated to each IGEP PROCESSORS BOARDS:
| style="width: 196px;"|IGEPv2 DM3730
| style="width: 10px;"|igep0020_defconfig
| style="width: 644px;"|<code><span style="color: #002d87000000;">$ <code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0020_defconfigigep0020_defconfig</spancode></codespan>
|-
| style="width: 196px;"|IGEP COM MODULE DM3730/AM3703
| style="width: 10px;"|igep0030_defconfig
| style="width: 644px;"|<span style="color: #002d87000000;"><code><span style="color: #002d87;">$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0030_defconfig</span></code></span>
|-
| style="width: 196px;"|IGEP COM AQUILA AM335x
am335x_igep0033_defconfig
| style="width: 644px;"|<span style="color: #002d87000000;"><code><span style="color: #002d87;">$ make make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_igep0033_defconfig</span></code></span>
|-
| style="width: 196px;"|IGEPv5 OMAP5432
| style="width: 10px;"| 
| style="width: 644px;"|<span style="color: #002d87000000;"><code><span style="color: #002d87;">$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-</span> </code></span>
|-
| style="width: 196px;"|IGEP SMARC AM335x
| style="width: 10px;"|am335x_igep0034_defconfig
| style="width: 644px;"|<span style="color: #002d87000000;"><code><span style="color: #002d87;">$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_igep0034_defconfig</span></code></span>
|-
| style="width: 196px;"|IGEP SMARC iMX6 Solo/Dual Lite
| style="width: 10px;"|igep0046_imx6dl_2G_defconfig
| style="width: 644px;"|<span style="color: #002d87000000;"><code><span style="color: #002d87;">$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0046_imx6dl_2G_defconfig</span></code></span>
|-
| style="width: 196px;"|IGEP SMARC iMX6 Dual/ Quad
| style="width: 10px;"|igep0046_imx6q_2G_defconfig
| style="width: 644px;"|<span style="color: #002d87000000;"><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: #002d87000000;">$ <code>make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- igep0046_imx6dl_2G_defconfigigep0146_imx6ul_512M_defconfig<br /span></code></span>
|}
 
==Build your U-BOOT==
After running the defconfig. You can build the U-Boot by executing this command:
<span style="color: #002d87000000;"> $ make  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 '''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 file in a boot device, for example, a microSD Memory Card and power on the board.
You Finally we can install these copy this filesin a '''boot device''', for example, a microSD Memory Card. It is explained in the boot partition of following [[How to prepare a SD-cardbootable 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 linkpost [[How to prepare a bootable MicroSD Card|How to prepare a bootable MicroSD Card]].</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. * have to download and compile [[How to boot from MicroSD Card|Boot from MicroSD Card.]]* Boot from NAND flashLinux Kernel 4.* Boot from eMMC9.* 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_Seriesy|u-boot Texas Instruments Series]]</span> <span style="color: #999999;">[[Category:U-Bootkernel]]</span>
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