How do I configure U-Boot for my board?

How do I configure U-Boot for my board?

To summarize, you need to configure U-Boot for your with the following steps:

1. Add your board device tree: arch/arm/dts/.
2. Create your own board support directory: board//.
3. Add TARGET_ _ in Kconfig.
4. Create your board defconfig: defconfig/_defconfig.

How add U-Boot command?

Implement custom u-boot command

1. Cloned the u-boot source from github.
2. Installed all the build dependencies in the system.
3. Prepared u-boot config files using make qemu_arm_config ARCH=arm CROSS_COMPILE=arm-none-eabi-
4. Build u-boot make all ARCH=arm CROSS_COMPILE=arm-none-eabi-

What is a U-Boot file?

U-Boot searches for an extlinux.conf configuration file for each bootable device. This file defines the kernel configuration to be used with bootm command: bootargs. files to start the OS: kernel (uImage) + device tree + ramdisk files (optional)

How do you compile U-Boot for arms?

Compile U-Boot

1. Get a toolchain. If you haven’t done so before, get a suitable toolchain installed and added to your PATH.
2. Get the Device-tree Compiler.
3. Clone the repository.
4. Determine build target.
5. Build.
6. Boot.
7. Setting u-boot environment variables.
8. NAND.

Does U-Boot use DTB?

The u-boot source uses the u-boot DTB while Linux uses Linux DTB when kernel boots. The u-boot version is a stripped down version as there are not as many peripherals needed to boot. You always use the kernel version for Linux i.e. u-boot passes this one to Linux (as well as load bzImage or vmlinux).

Is U-Boot Linux?

U-Boot is the most popular boot loader in linux based embedded devices. It is released as open source under the GNU GPLv2 license.

Is there a tutorial for U-Boot for arm?

The short tutorial focuses on U-Boot for ARM, but the techniques used on other architectures are similar and often exactly the same. It’s assumed that the reader is familiar with U-Boot usage at the command level as well as compilation and deployment.

How to make U-Boot Run a boot script?

U-Boot environment variables can be used to create boot scripts. Such boot scripts are actually environment variables containing a set of U-Boot command sequences. By using a combination of the run command and the ; (semicolon) operator, you can make U-Boot run boot scripts.

How to configure U-Boot for a specific board?

Look at the README file to see if your board is supported. For each supported board, U-Boot’s Makefile includes a BOARD_NAME_config target, which is used to configure U-Boot’s build for the designated board. The configuration target for the TQM860L board I use for my control module, for example, is TQM860L_config.

What do you need to know about U-Boot?

It’s often desirable to make slight changes to U-Boot in order to adapt it to custom hardware. For example, supporting board-specific features or adding a few routines that give the end-user signs that the device has indeed powered on, and that something is happening while the boot process takes place.