Operating System Embedded: Difference between revisions

Revision as of 21:14, 15 September 2020

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{{Afd-merge to|ENEA AB|Operating System Embedded|15 September 2020}}

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{{Advert|date=April 2012}}

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{{Infobox OS

| name = Enea OSE

| logo = ENEA AB logo.png

| screenshot =

| caption =

| developer = [[ENEA AB]]

| family = [[Real-time operating system|Real-time]] [[embedded operating system]]

| working state = Current

| released = <!-- {{Start date and age|19??|mm|dd}} -->

| source model = Closed-source

| kernel type = [[Microkernel]]

| supported platforms = [[ARM architecture|ARM]], [[PowerPC]], [[MIPS architecture|MIPS]]

| latest release version = 5.9.1

| latest release date = {{Start date and age|2018|03|20}}

| latest preview version =

| latest preview date =

| marketing target = [[Multi-core processor|Multi-core]] [[embedded system]]s

| programmed in = [[Assembly language|Assembly]], [[C (programming language)|C]], [[C++]]

| language = English

| update model =

| package manager =

| ui =

| license = [[Proprietary software|Proprietary]]

| preceded by =

| succeeded by =

| website = {{URL|www.enea.com/ose}}

| other articles =

}}

The '''Operating System Embedded''' ('''OSE''') is a [[real-time operating system|real-time]] [[embedded operating system]] created by the [[Sweden|Swedish]] information technology company [[ENEA AB]]. Bengt Eliasson, who at the time was a consultant from ENEA with an assignment at [[Ericsson]], wrote the basic parts of the [[Kernel (operating system)|kernel]]. The early version for the [[Zilog Z80]] processor was named OS80.

The '''Operating System Embedded''' ('''OSE''') is a [[real-time operating system|real-time]], [[Microkernel]], [[embedded operating system]] created by the [[Sweden|Swedish]] information technology company [[ENEA AB]]., Bengtwhich Eliasson,was whocollaborating atwith the[[Ericsson]] timeto wasdevelop a consultant[[Multi-core fromprocessor|Multi-core]] ENEAsystem withusing an assignment at [[EricssonAssembly language|Assembly]], wrote the basic parts of the [[KernelC (operatingprogramming systemlanguage)|kernelC]], and [[C++]]. The earlyIt versionis fora theClosed-source [[ZilogProprietary Z80software|proprietarily licensed software]] processorreleased wason named20 OS80March 2018.

== Architecture and abilities ==

OSE uses [[event (computing)|events]] (named ''[[signal programming|signals]]'' due to ENEA's telecom background) in the form of messages passed to and from [[computer process|processes]] in the system. Messages are stored in a [[Queue (abstract data type)|queue]] attached to each process. A ''link handler'' mechanism allows signals to be passed between processes on separate machines, over a variety of transports. The OSE signalling mechanism formed the basis of an [[open-source software|open-source]] inter-process kernel design project called [[LINX (IPC)|LINX]].

==Development==

* [[Fault tolerant]], [[distributed architecture]]

Bengt Eliasson wrote the basic parts of the [[Kernel (operating system)|kernel]]. The early version for the [[Zilog Z80]] processor was named OS80.

* Modular, layered [[microkernel]] architecture

* Multilevel process scheduling

* [[Event-driven architecture|Event-driven]], deterministic [[Real-time computing|real-time]] response

* Asynchronous direct [[message-passing]] model

* Scalable hybrid [[Multi-core processor|multicore]] system exploiting the advantages from both [[asymmetric multiprocessing]] (AMP) and [[symmetric multiprocessing]] (SMP) models

* [[Memory protection]]

* Centralized [[error handling]] and remediation

* Built-in task (process) monitoring and failure detection

* Dynamic, run-time program loading

* [[Power management]] with low-power sleep mode

* [[Demand paging]] support for optimizing [[random-access memory]] (RAM) use

* Comprehensive networking and security support

* Multiple file system choices including crash-safe, [[journaling file system]]

* Distributed system-level simulation

* Run mode monitor (RMM) for [[remote monitoring]], tracing, profiling, and debugging

* Optima, an [[Eclipse (software)|Eclipse]]-based integrated development environment and tools suite

== MulticoreArchitecture Editionand abilities ==

[[File:ENEA AB logo.png|right|thumb|upright=.8]]

Enea OSE Multicore Edition was released in 2009. It is based on the same microkernel architecture. The kernel design that combines the advantages of both traditional [[asymmetric multiprocessing]] (AMP) and [[symmetric multiprocessing]] (SMP).

OSE uses [[event (computing)|events]] (namedor ''[[signal programming|signals]]'' due to ENEA's telecom background) in the form of messages passed to and from [[computer process|processes]] in the system. Messages are stored in a [[Queue (abstract data type)|queue]] attached to each process. A ''link handler'' mechanism allows signals to be passed between processes on separate machines, over a variety of transports. The OSE signalling mechanism formed the basis of an [[open-source software|open-source]] inter-process kernel design project called [[LINX (IPC)|LINX]].

The hybrid AMP–SMP kernel in OSE Multicore Edition is based on a number of:

* Essential services in OSE are implemented according to a microkernel model which allows IP stacks, [[file system]]s, application loaders, etc., to be located on different cores, while applications can access these services regardless of ___location in the system (___location transparency).

* A kernel that instantiates a separate scheduler on each core with associated data structures to preserve determinism and realtime traits.

* User-defined process migration and load balancing based on low intrusion mechanisms to measure CPU load on each core.

* A lightweight kernel internal IPC mechanism called kernel events used to perform asynchronous, cross core transactions to avoid use of fine-granular locking designs, which has a detrimental effect on performance.

Enea OSE Multicore Edition was released in 2009. It is based on the same microkernel architecture. The kernel design that combines the advantages of both traditional [[asymmetric multiprocessing]] (AMP) and [[symmetric multiprocessing]] (SMP). The Enea OSE family of RTOS features 3 OSs: ''OSE'' for [[ARM architecture|ARM processors]], [[PowerPC]] and [[MIPS architecture|MIPS]], ''OSE_ck'' for various DSP's, and ''OSE Epsilon'' for minimal devices, written in pure assembly ([[ARM architecture|ARM]], [[ColdFire]]) .

== Processor support ==

OSE supports many processors, mainly 32-bit:. These include the [[ARM Cortex|ARM family, the [[PowerPC]] family, and the [[MIPS architecture|MIPS]] family of processors.

* ARM family:

** [[ARM9E]]

** [[ARM11]]

** [[Xscale]]

** [[ARM Cortex]]

* [[PowerPC]] family:

** IBM PPC4xx

** IBM [[PowerPC 7xx|PPC7xx]]

** [[Freescale]] MPC86xx (multicore support on MPC8641D)

** Freescale MPC85xx (multicore support on MPC8572DS, QorIQ P2020, P4080)

** Freescale MPC83xx

** Freescale MPC82xx

** Freescale MPC74xx

* [[MIPS architecture|MIPS]] family

** [[Cavium Networks|Cavium]] Octeon Plus (CN58xx and CN56xx)

** MIPS32

==See also==

* [[Smartphone]]

==References==

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[[Category:Embedded operating systems]]

[[Category:ARM operating systems]]

[[Category:Proprietary operating systems]]

[[Category:Microkernel-based operating systems]]

[[Category:Microkernels]]