It is free software released under the terms of the GNU General Public License. The current name Das U-Boot adds a German definite article, to create a bilingual pun on the classic 1981 German submarine film Das Boot, which takes place on a World War II German U-boat. The May 2004 release of U-Boot-1.1.2 worked on the products of 216 board manufacturers across the various architectures. Additional architecture capabilities were added in the following months: MIPS32 in March 2003, MIPS64 in April, Nios II in October, ColdFire in December, and MicroBlaze in April 2004. PPCBoot−2.0.0 became U−Boot−0.1.0 in November 2002, expanded to work on the x86 processor architecture. This marked the last release under the PPCBoot name, as it was renamed to reflect its ability to work on other architectures besides the PPC ISA. In 2002 a previous version of the source code was briefly forked into a product called ARMBoot, but was merged back into the PPCBoot project shortly thereafter. Version 0.4.1 of PPCBoot was first publicly released July 19, 2000. Wolfgang Denk moved the project to and renamed it to PPCBoot, because SF.net did not allow project names starting with digits. The project started as an MPC 8xx PowerPC bootloader. ![]() It is available for a large number of different computer architectures, including 68k, ARM, Blackfin, MicroBlaze, MIPS, Nios, SuperH, PPC, RISC-V and x86. U-Boot (subtitled “the Universal Boot Loader” and often shortened to U-Boot), started by Wolfgang Denx more than 20 years ago,has become a de-facto standard for Embedded Linux Device and not only. You cannot have a running device with Embedded Linux without a bootloader that initializes the hardware and load and start the OS.
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