Yocto Build U-Boot: Difference between revisions

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= Install the built U-Boot on an SD card =
= Install the built U-Boot on an SD card =
<pre>
{{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-MX7 |
$ sudo dd if=SPL of=/dev/sdX bs=1K seek=1; sync
$ sudo dd if=u-boot.imx of=/dev/sdX bs=1K seek=1; sync
$ sudo dd if=u-boot.img of=/dev/sdX bs=1K seek=69; sync
(Replace /dev/sdX with the correct device)
(Replace /dev/sdX with the correct device)
|
</pre>
$ sudo dd if=SPL of=/dev/sdX bs=1K seek=1; sync
$ sudo dd if=u-boot.img of=/dev/sdX bs=1K seek=69; sync
(Replace /dev/sdX with the correct device)
}}


If you want to use our recovery SD card to flash the built U-Boot to NAND flash/eMMC, then copy it to the appropriate location in the SD card:  
If you want to use our recovery SD card to flash the built U-Boot to NAND flash/eMMC, then copy it to the appropriate location in the SD card:  
<pre>
{{#ifeq: {{#var:HARDWARE_NAME}} | VAR-SOM-MX7 |
$ sudo cp SPL /media/rootfs/opt/images/...
$ sudo cp u-boot.imx /media/rootfs/opt/images/...
$ sudo cp u-boot.img /media/rootfs/opt/images/...
|
</pre>
$ sudo cp SPL /media/rootfs/opt/images/...
$ sudo cp u-boot.img /media/rootfs/opt/images/...
}}
And eject the SD card gracefully from host machine.
And eject the SD card gracefully from host machine.



Revision as of 11:45, 26 June 2017

Yocto Build U-Boot from source code

Toolchain installation for out of Yocto builds

To install the toolchain, follow Yocto Toolchain installation.

Build U-Boot out of Yocto tree

Obtain sources:

$ git clone https://github.com/varigit/uboot-imx.git
$ cd uboot-imx
$ git checkout imx_v2015.04_4.1.15_1.1.0_ga_var03

Build U-Boot:

$ source /opt/fslc-x11/2.2.1/environment-setup-armv7at2hf-neon-fslc-linux-gnueabi
$ make mrproper
Choose one of the following configurations:

For booting from SD card/eMMC:
$ make mx6var_som_sd_defconfig

For booting from NAND flash:
$ make mx6var_som_nand_defconfig
$ make -j4

Install the built U-Boot on an SD card

$ sudo dd if=SPL of=/dev/sdX bs=1K seek=1; sync

$ sudo dd if=u-boot.img of=/dev/sdX bs=1K seek=69; sync
(Replace /dev/sdX with the correct device)

If you want to use our recovery SD card to flash the built U-Boot to NAND flash/eMMC, then copy it to the appropriate location in the SD card: $ sudo cp SPL /media/rootfs/opt/images/...

$ sudo cp u-boot.img /media/rootfs/opt/images/...

And eject the SD card gracefully from host machine.

Update your U-Boot out of Yocto tree

$ git pull