forked from Imagelibrary/rtems
5e5214b786
Fix _CPU_SMP_Get_current_processor(), since read from register MPIDR_EL1 (the least significant byte) is not always right,for example the least significant byte of MPIDR_EL1 is always zero for cortex-a55. aarch64 has a thread ID register TPIDR_EL1 available for for OS management purposes. RTEMS stores per-CPU control in TPIDR_EL1 when the core startup, so we can use _Per_CPU_Get_index() to get current processor index. update #5064
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.
- Event-driven, priority-based, preemptive scheduling.
- Optional rate monotonic scheduling.
- Intertask communication and synchronisation.
- Priority inheritance.
- Responsive interrupt management.
- Dynamic memory allocation.
- High level of user configurability.
- Open source with a friendly user license.
Project git repositories are located at:
Online documentation is available at:
RTEMS Doxygen for CPUKit:
RTEMS POSIX 1003.1 Compliance Guide:
RTEMS Mailing Lists for general purpose use the users list and for developers use the devel list.
The version number for this software is indicated in the VERSION file.