Yocto Build U-Boot: Difference between revisions

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{{#ifeq: {{#var:HARDWARE_NAME}} | DART-MX8M |
{{#ifeq: {{#var:HARDWARE_NAME}} | DART-MX8M |
<br>
  $ make {{#var:U-BOOT_SD_DEFCONFIG}}
  $ make {{#var:U-BOOT_SD_DEFCONFIG}}
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  # Build final image
  # Build final image
  $ ./mkimage_imx8 -fit -signed_hdmi signed_hdmi_imx8m.bin -loader u-boot-spl-ddr.bin 0x7E1000 -second_loader u-boot.itb 0x40200000 0x60000 -out imx-boot-sd.bin
  $ ./mkimage_imx8 -fit -signed_hdmi signed_hdmi_imx8m.bin -loader u-boot-spl-ddr.bin 0x7E1000 -second_loader u-boot.itb 0x40200000 0x60000 -out {{#var:U-BOOT_SD_IMAGE_NAME}}
}}
}}


= Install the built U-Boot on an SD card =
= Install the built U-Boot on an SD card =
{{#ifeq: {{#var:HARDWARE_NAME}} | DART-MX8M |
<br>
$ sudo dd if={{#var:U-BOOT_SD_IMAGE_NAME}} of=/dev/sdX bs=1K seek=33 conv=fsync
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{{#ifeq: {{#var:SPL_SD_IMAGE_NAME}} | N/A  
{{#ifeq: {{#var:SPL_SD_IMAGE_NAME}} | N/A  
|<br>
|<br>
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  (Replace /dev/sdX with the correct device)
  (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:
{{#ifeq: {{#var:SPL_SD_IMAGE_NAME}} | N/A  
{{#ifeq: {{#var:SPL_SD_IMAGE_NAME}} | N/A  

Revision as of 08:57, 5 July 2018

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.


Note: If you manually upgrade an existing U-Boot, and you have an old environment saved, it is a good idea to reset your environment to the new default (see Environment handling commands)

Update your U-Boot out of Yocto tree

$ git pull