Debian Build U-Boot

From Variscite Wiki
Build U-Boot from source code

Toolchain installation for out of builds

To install the toolchain, follow the Yocto Toolchain installation guide.

Build U-Boot out of tree

Obtain sources:

$ git clone https://github.com/varigit/ti-u-boot -b ti-u-boot-2023.04_09.02.01.10_var01
$ cd uboot-imx

Configure compilation environment:

$ export ARCH=arm64
$ export CROSS_COMPILE=~/debian_am62x_var_som/toolchain/gcc-arm-9.2-2019.12-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-

Cleanup everything:

$ make mrproper

Select one of the following configurations:

For booting from SD card/eMMC:
$ make 

For booting from NAND flash:
$ make 

Build U-Boot:

$ make -j$(nproc)


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

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 Debian tree

$ cd uboot-imx
$ git pull