Linux的發(fā)展之路

　　Linux長期以來處于突破嵌入式系統(tǒng)的邊緣，但其中一個障礙是缺乏足夠的處理器和足夠的存儲空間來應(yīng)付Linux。在過去的幾年中，情況發(fā)生了變化，有許多低成本的開發(fā)板，每個都有一系列的插件外設(shè)和承載處理器，它們能夠輕松地執(zhí)行基于Linux的應(yīng)用程序。本文將在BEAGLEBONE BeagleBoard / PandaBoard。它也將在制造商的方法對同一問題的–飛思卡爾塔式開發(fā)系統(tǒng)在MPC8309 PowerQUICC II Pro處理器特別強調(diào)。

　　兩beagleboards和pandaboards開源硬件的板包括需要創(chuàng)建板材料和文件的格伯法案的細節(jié)都是免費的-一個社區(qū)開發(fā)插件和其他工具，以德克薩斯儀器（TI）的強大支持，Digi-Key。

　　The first BeagleBoard was developed to show off the capabilities of the TI OMAP3530 system-on-a-chip. OMAP? （Open Multimedia Applications Platform） products， part of TI’s DaVinci? platform， are aimed， as the name suggests， at media processing， but can also be seen as a very powerful “computer on a chip”。 The 3530 is powered by an ARM? Cortex?-A8 core running at up to 720 MHz， and it has， on-chip， a TI TMS320C84x DSP and an Imagination Technologies PowerVR SGX graphics engine. Additionally on-chip is a display sub-system， a camera interface， a range of serial interfaces and four USB controllers， as well as memory caches for the cores and 64 kB SRAM and 128 kB ROM. Add in low power consumption （TI does not provide an overall power figure， claiming it is application dependent） and the fact that it was the most powerful ARM-based device available at the time， and you have a very attractive little computer.