SnapGear has published a technical whitepaper that provides an introduction for embedded developers to familiarize themselves with embedded Linux for deeply embedded microprocessors — uClinux. The whitepaper is written by David McCullough, a kernel engineer at SnapGear who is currently the maintainer of uClinux's ColdFire distributions and who has contributed patches to upgrade uClinux to the Linux 2.4… kernel . . .

“With linux enjoying growing success in the embedded space, more and more people are looking to experiment with embedded linux and how suitable it is for their application. Unfortunately this usually requires a large investment in time to get Linux running on a platform that resembles the target hardware for the application. More often than not this investment in time is suitable deterent to investigating the linux option any further. Even more so in deeply embedded environments where uClinux is likely to be found. This paper will look at software only options (emulators) available to run the uClinux operating system. uClinux is a version of Linux for CPUs without virtual memory or an MMU (Memory Management Unit) and is typically targeted at deeply embedded systems with very little memory or permanent storage . . . “

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