U-Boot (Das U-Boot) is **The Universal Boot Loader**.

Das U-Boot, often shortened to U-Boot, is a free, open-source and extensible boot loader available for many architectures (ARM, MIPS, PowerPC, RISC-V, x86, x86_64), whose purpose is to perform various hardware initialization tasks and boot the device's operating system kernel.

The complete up-to-date documentation is available at docs.u-boot-project.org. This includes user-oriented documentation for users that want to get U-Boot running on their system, and developer-oriented documentation for those who want to contribute.

U-Boot's source code is licensed under the GNU General Public License v2 or-later, and it is freely available for anyone to dive in. There are also multiple Custodian trees for specific SoC support or feature support in U-Boot.

There are different ways to get involved in the U-Boot community. To post to the mailing list, send your email messages to u-boot@lists.denx.de. Join us in the #u-boot channel on the Libera.Chat IRC network.