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4.1
Introduction
RSB-4420 platform is an embedded system with Linux kernel 3.2.0 support. It con-
tains all system-required shell commands and drivers ready for the RSB-4221 plat-
form. We do not offer an IDE development environment in RSB-4221 BSP, instead
users can evaluate and develop under Ubuntu 12.04LTS environment.
There are three major boot components for Linux, "u-boot.img", "uImage" and "File
System". The "u-boot.img" is for initializing peripheral hardware parameters; the
"uImage" is the Linux kernel image and the "File System" is for Linux O.S. used.
You will not be able to boot into a Linux environment successfully if one of above
three files is missing from the boot media (SD card or onboard flash).
The purpose of this chapter is to introduce software configuration and development
of RSB-4221 so that you can develop your own applications efficiently.
RSB-4221 application development is only for Linux host PCs, you cannot develop
your application for Windows/Android OS. For now the official supported host version
is Ubuntu 12.04 LTS, but the host PC in any other Linux version may have compati-
bility issues. In this case, we strongly recommend using Ubuntu 12.04 LTS installed
on your host PC before starting RSB-4221 evaluation/development.
4.2
Package Content
We offer you two different kinds of Linux package for RSB-4221. One is a pre-built
system image for system recovery, another is a source code package (BSP).
4.2.1
Pre-built System Image
You can find the pre-built image 4221LIVxxxx_yyyy-mm-dd.tar.gz from RSB-4221
evaluation kit DVD image downloaded from the Advantech website. RSB-4221 sup-
ports booting from SD card so you can extract the image to the SD card then dump
the image file to the onboard eMMC to complete system recovery. For more details,
please refer to section: 3.6 Creating a Linux System Boot media.
4.2.2
Source Code Package
RSB-4221 source code package (BSP) contains cross compiler, Linux source code,
Uboot source code, root file system and some scripts used in OS development.
Some of above components are developed by Advantech and the others are devel-
oped by the open source community. RSB-4221 source code package is composed
of six main folders: "cross_compiler", "document", "image", "package", "scripts", and
"source".
Note!
RSB-4221 source code package (BSP) is Advantech's Intellectual Prop-
erty. If you need to access this package, please contact Advantech sup-
port.
RSB-4221 User Manual
Figure 4.1 Source code package structure
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