VAR-SOM-MX6 Yocto Fido R3 Build u-boot out of tree

VAR-SOM-MX6 - Yocto fsl-3.14.38_6qp Fido R3 U-Boot out of tree

Toolchain installation for out of Yocto builds

Build the toolchain by:

$ bitbake meta-ide-support
$ bitbake meta-toolchain

The output will be located at tmp/deploy/sdk/. On a 64 bit Ubuntu you will get:

sdk/poky-eglibc-x86_64-meta-toolchain-cortexa9hf-vfp-neon-toolchain-1.8.sh

Install the tools by running:

$ tmp/deploy/sdk/poky-eglibc-x86_64-meta-toolchain-cortexa9hf-vfp-neon-toolchain-1.8.sh

Reply to all defaults 'y'
The toolchain name depend on your build machine and may change.

Build U-Boot out of Yocto tree

Note:
This is a single U-Boot image that supports all VAR-SOM-MX6 SOMs.

Obtain sources:

$ git clone https://github.com/varigit/uboot-imx -b imx_v2015.04_3.14.52_1.1.0_ga_var01

• Follow above procedure for installing the toolchain

Build U-Boot:

$ source /opt/poky/1.8/environment-setup-cortexa9hf-vfp-neon-poky-linux-gnueabi

clean tree:
$ cd uboot-imx/
$ make mrproper

Choose build for SD card or NAND Flash:
$ make mx6var_som_sd_defconfig
or
$ make mx6var_som_nand_defconfig

Build U-Boot:
$ make -j4

Flash U-Boot to the SD card (replace /dev/sdX with your correct device):

$ 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

If you want to use the SD card to flash the built U-Boot to NAND, 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/...

Eject SD card gracefully from host machine.

Note:
Refer to NAND Flash Burning for a complete description.