Sebastian Huber 810b2d50c9 bsps/leon3: Fix AMBA frequency initialization
Where LEON3_GPTIMER_BASE was defined, the finding and initialization of
the timer devices was disabled.  However, this code block has an
important side-effect.  It initializes all frequencies of the device
tree.  Make sure this part is done even if a dynamic initialization of
LEON3_Timer_Adev and LEON3_Timer_Regs is not required.

Close #5541.

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
2026-04-02 18:11:19 -05:00
2026-02-01 19:24:33 -06:00

Real-Time Executive for Multiprocessing Systems

RTEMS is a real-time executive (kernel) which provides a high performance environment for embedded applications with the following features:

  • Standards based user interfaces.
  • Multitasking capabilities.
  • Homogeneous and heterogeneous multiprocessor systems.
  • Symmetric Multiprocessing (SMP):
    • Cluster scheduling: Job-level fixed prority scheduler (EDF) with support for one-to-one and one-to-all thread to processor affinities.
    • Locking protocols with transitive priority inheritance, priority ceiling, MRsP and OMIP.
  • Event-driven, priority-based, preemptive scheduling.
  • Scalable timer and timeout support.
  • Optional rate monotonic scheduling.
  • Intertask communication and synchronisation.
  • Priority inheritance.
  • Responsive interrupt management.
  • Dynamic memory allocation.
  • Dynamic code loading using run-time link editing.
  • File systems, IMFS, FAT, RFS, JFFS, NSFv4 (with LibBSD)
  • High level of user configurability.
  • Link-time configurable schedulers.
  • Linker-set based initialization (similar to global C++ constructors).
  • Drivers for I2C, SPI and LibBSD has NIC, USB, SD/MMC and Framebuffer.
  • Open source with a friendly user license.

RTEMS Project:

Project git repositories are located at:

Online documentation is available at:

RTEMS Doxygen for CPUKit:

RTEMS POSIX 1003.1 Compliance Guide:

RTEMS Discourse User forum for questions, answers and examples:

RTEMS Discord for support:

RTEMS Mailing Lists for general purpose use the users list and for developers use the devel list.

The version number for this software in releases is located in the VERSION file if present.

S
Description
RTEMS is a ​real-time executive in use by embedded systems applications around the world and beyond
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