![]() The $(TOPDIR) 2 has the following sub-directories: The following directory structure is not complete and includes only parts that are of interest to this article. One of the most important steps in porting Linux to a new target platform is to have a very clear understanding of how the kernel sources are organized. The Linux kernel sources for MIPS can be downloaded from the Linux-VR site. The detailed steps for installation are available along with the tools. The following cross-development tools need to be downloaded and installed on the PC running Linux: cross-binutils-as, ld, and so on C cross compiler and cross-development C libraries. The Linux VR Web site (see References) is a good starting point for cross-development tools and sources for Linux on MIPS. The current development was done on a PC running Red Hat Linux. In addition, many device drivers are available for Linux, which could be used directly or as a starting point for your target devices.Ĭross-development tools were used for this project. The GNU 1 project provides a wealth of development tools that support Linux and are also open source. ![]() With the introduction of Linux into the embedded sphere, it has become possible for the semiconductor company itself to port an operating system to a new processor, since the source code for the Linux kernel is available as open source. In addition, the peripherals around the processor required drivers that had to be developed for the specific operating system. Usually the operating system company also provided these tools. The other issue was with the development tools (compiler, debugger, simulator, and so on) for the given processor. If a new processor was designed and developed by a semiconductor company, they had to depend on an operating system company to port their operating system to the new processor. Until now, most embedded operating systems have been proprietary. This article explains the work involved in porting Linux to a specific embedded system and how it was done for one embedded system in particular. Many commercial vendors specialize in porting Linux to embedded systems. Linux is gaining in popularity in embedded systems. Windows users who find Rufus confusing can also use Etcher, as the tool is also available for Windows.Why pay someone to port Linux for you? Here's one Linux how-to no embedded programmer should miss. Etcher doesn't have many settings, but it works well the overwhelming majority of the time. Like Rufus, Etcher is tiny, very fast, and comes with a great GUI that makes the tool incredibly simple to use. Linux and macOS users should use Etcher, an open-source USB-burning tool. Furthermore, Rufus can detect the type of ISO you are attempting to burn and apply a common setup for any tiny Linux distro. It has decent customization options and can automatically detect your USB flash drive. Rufus is one of the fastest, smallest, and easiest USB-burning tools available for Windows users. However, the best recommendation for Windows users will be Rufus, while Linux and macOS users should try Etcher. There are numerous tools you can use to create a bootable USB flash drive. You'll need to burn the tiny Linux distro to bootable media before doing anything else. The first thing you need is a tool to create a bootable USB flash drive. Here are nine of the smallest Linux distros that need almost no space! Before You Start: How to Create Bootable USB Flash Drives
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