μClinux is a variation of the Linux kernel, previously maintained as a fork, that targets microcontrollers without a memory management unit (MMU).[1] It was integrated into the mainline kernel as of 2.5.46;[2] the project continues to develop patches and tools for microcontrollers. The homepage lists Linux kernel releases for 2.0, 2.4 and 2.6 (all of which are end-of-life in mainline).
μClinux was originally created by D. Jeff Dionne and Kenneth Albanowski in 1998. Initially, they targeted the Motorola DragonBall family of embedded 68k processors (specifically the 68EZ328 series used in the Motorola PalmPilot) on a 2.0.33 Linux kernel. After releasing their initial work, a developer community quickly sprang up extending their work to newer kernels and other microprocessor architectures. In early 1999, support was added for the Motorola (now NXP) ColdFire family of embedded microprocessors. ARM processor support was added later.
Although originally targeting 2.0 series Linux kernels, it now has ports based on Linux 2.4 and Linux 2.6. The Linux 2.4 ports were forward ported from the 2.0.36 Linux kernel by Michael Leslie and Evan Stawnyczy during their work at Rt-Control. There were never any μClinux extensions applied to the 2.2 series kernels.
Since version 2.5.46 of the Linux kernel, the major parts of μClinux have been integrated with the mainline kernel for a number of processor architectures.[4]
Greg Ungerer (who originally ported μClinux to the Motorola ColdFire family of processors) continued to maintain and actively push core μClinux support into the 2.6 series Linux kernels. In this regard, μClinux is essentially no longer a separate fork of Linux.
μClinux had support for many architectures, and forms the basis of many products, like network routers, security cameras, DVD or MP3 players, VoIP phone or gateways, scanners, and card readers.
Support for several of the original target architectures was dropped in 2018.[5] The obsolete CPU architectures set to be removed in Linux 4.17 and subsequent releases included ADI Blackfin, Etrax CRIS, Fujitsu FR-V, Mitsubishi M32R, Matsushita/Panasonic MN10300, Imagination META (Metag), and Tilera TILE.[6]
^D. Jeff Dionne; Michael Durrant. "uClinux Description". from the original on 2007-12-25. Retrieved 2007-12-31.
^Greg Ungerer. . Archived from the original on 2007-10-31. Retrieved 2008-01-15.
^"μClinux". from the original on October 4, 2006. Retrieved August 31, 2015.
^Miles Gillham "uClinux and Linux set to merge", Linux.com, November 19, 2002.
^Linus Torvalds "Linux 4.17-rc1", LKML.ORG, 15 April 2018.
^Jonathan Corbet "Shedding old architectures and compilers in the kernel", LWN.net, February 26, 2018.
^"Linux for ARM® Processors www.arm.com Summer/Winter 2013 Robert Boys System Design Division, ARM" (PDF). 2013-09-10. Retrieved 2014-07-17. What about Cortex-M and Cortex-R ? /../ These can run a modified version of Linux called uClinux.
Accelerated Linux, an actively developed continuation[1] of μClinux-dist by Digi
^BoF- Accelerated Linux Build System - Jeff Shaw, Digi International
March 02, 2023
μclinux, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, Μclinux, news, newspapers, books, scholar, jstor, december,. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources MClinux news newspapers books scholar JSTOR December 2011 Learn how and when to remove this template message mClinux is a variation of the Linux kernel previously maintained as a fork that targets microcontrollers without a memory management unit MMU 1 It was integrated into the mainline kernel as of 2 5 46 2 the project continues to develop patches and tools for microcontrollers The homepage lists Linux kernel releases for 2 0 2 4 and 2 6 all of which are end of life in mainline mClinuxAn iPod booting iPodLinux based on mClinuxOS familyEmbedded LinuxWorking stateCurrentSource modelOpen sourcePlatformsSee belowKernel typeLinux kernel forkUserlanduClinux dist uClibc BusyBoxOfficial websiteuclinux org at the Wayback Machine archived 2018 11 13 uClibc is a wrapper around the system calls of the Linux kernel and or mClinux The letters mC are for microcontroller the name is pronounced you see Linux rather than pronouncing the letter mu as in Greek 3 Contents 1 History 2 Supported architectures 2 1 No longer supported 3 References 4 External linksHistory EditmClinux was originally created by D Jeff Dionne and Kenneth Albanowski in 1998 Initially they targeted the Motorola DragonBall family of embedded 68k processors specifically the 68EZ328 series used in the Motorola PalmPilot on a 2 0 33 Linux kernel After releasing their initial work a developer community quickly sprang up extending their work to newer kernels and other microprocessor architectures In early 1999 support was added for the Motorola now NXP ColdFire family of embedded microprocessors ARM processor support was added later Although originally targeting 2 0 series Linux kernels it now has ports based on Linux 2 4 and Linux 2 6 The Linux 2 4 ports were forward ported from the 2 0 36 Linux kernel by Michael Leslie and Evan Stawnyczy during their work at Rt Control There were never any mClinux extensions applied to the 2 2 series kernels Since version 2 5 46 of the Linux kernel the major parts of mClinux have been integrated with the mainline kernel for a number of processor architectures 4 Greg Ungerer who originally ported mClinux to the Motorola ColdFire family of processors continued to maintain and actively push core mClinux support into the 2 6 series Linux kernels In this regard mClinux is essentially no longer a separate fork of Linux mClinux had support for many architectures and forms the basis of many products like network routers security cameras DVD or MP3 players VoIP phone or gateways scanners and card readers Support for several of the original target architectures was dropped in 2018 5 The obsolete CPU architectures set to be removed in Linux 4 17 and subsequent releases included ADI Blackfin Etrax CRIS Fujitsu FR V Mitsubishi M32R Matsushita Panasonic MN10300 Imagination META Metag and Tilera TILE 6 Supported architectures EditThe current list includes Altera Nios Nios II Amber open FPGA core ARM ARM7TDMI ARM Cortex M3 M4 M7 7 ARM Cortex R Lattice Mico32 NXP 680x0 Motorola Freescale 680x0 Hyperstone E1 E2 called hyLinux Intel i960 MIPS NXP ColdFire Motorola Freescale ColdFire NEC V850E Xilinx MicroBlazeNo longer supported Edit Hitachi Renesas H8 h8300 removed in Linux 5 19 8 Before Linux 4 17 the following architectures were also supported 9 ADI Blackfin blackfin Axis ETRAX cris Fujitsu FR V frv Mitsubishi Renesas M32R m32r References Edit D Jeff Dionne Michael Durrant uClinux Description Archived from the original on 2007 12 25 Retrieved 2007 12 31 Greg Ungerer uClinux mainline Announcement Archived from the original on 2007 10 31 Retrieved 2008 01 15 mClinux Archived from the original on October 4 2006 Retrieved August 31 2015 Miles Gillham uClinux and Linux set to merge Linux com November 19 2002 Linus Torvalds Linux 4 17 rc1 LKML ORG 15 April 2018 Jonathan Corbet Shedding old architectures and compilers in the kernel LWN net February 26 2018 Linux for ARM Processors www arm com Summer Winter 2013 Robert Boys System Design Division ARM PDF 2013 09 10 Retrieved 2014 07 17 What about Cortex M and Cortex R These can run a modified version of Linux called uClinux remove the h8300 architecture GIT PULL arch remove obsolete architecture ports External links EditUclinux dev on GitHub mClinux dist complete source distribution package at the Wayback Machine archived 2018 11 13 mClinux at SourceForge mClinux Setting up the Development Environment at the Wayback Machine archived 2017 03 24 Accelerated Linux an actively developed continuation 1 of mClinux dist by Digi BoF Accelerated Linux Build System Jeff Shaw Digi International Retrieved from https en wikipedia org w index php title MClinux amp oldid 1132344861, wikipedia, wiki, book, books, library,
