Date: Tue, 15 Jun 2004 12:47:09 -0700 (PDT) From: "Bruce R. Montague" <brucem@mail.cruzio.com> To: freebsd-hackers@freebsd.org Cc: garycor@comcast.net Subject: Re: FreeBSD or other BSD for no-MMU ARM processor ? Message-ID: <200406151947.i5FJl9Pg000793@mail.cruzio.com>
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Hi, re: >>Does anyone know if there is a port of FreeBSD, or any of the >>other BSDs (e.g. NetBSD) for that matter, which will run on an >>ARM processor which does NOT have an MMU (Memory Management Unit)? > > The general feeling seems to be that without an MMU and the added features > of memory protection it provides, the heavyweight process-oriented UNIX > kernel doesn't really offer much advantage over a lighter-weight solution > like RTEMS or eCos. The uClinux gang disagrees with this assessment, Another such light-weight embedded C kernel with unmapped ARM support that seems to be popular lately is microC/OS, sometimes called uC/OS or "mucos". My _impression_ is that it is a free open source system but that a number of companies sell support and a number of embedded companies specialize in getting it past validation suites in vertical niche markets, etc.. I think it's been used for digital cameras and such. http://www.accu.org/bookreviews/public/reviews/m/m002257.htm http://www.cmpbooks.com/product/1057 - bruce
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