1. Introduction

The purpose of this document is to provide a practical introduction on developing software for the AMOS-820 (Bare board: VAB-820) on a Linux development host only.

1.1. Overview

The VIA AMOS-820 platform is an embedded system powered by ARM processor with Linux kernel 3.0.35 operating system by default. Major functions of the Linux include all system-requirement shell commands and drivers ready for AMOS-820 platform. AMOS-820’s Solution package does not offer a development environment. Users can develop it under an Ubuntu environment.

There are three major boot components for Linux, the “u-boot.bin”, “uImage” and “Root File System”. The “u-boot.bin” is for initial peripheral hardware parameter. The “uImage” is the Linux kernel image, and the “Root File System” is for Linux O.S. The system will not boot successfully into a Linux environment if one of these files does not exist in the boot media (SPI ROM, SD storage card or onboard eMMC).

This development guide will use VAB-820 as an example instead of AMOS- 820 to describe relational building procedure.

1.2. Package Content

There are three folders in AMOS-820 Solution Pack.

Figure 1: VAB-820/AMOS-820 Solution Pack content

1.2.1. BSP Folder Contents

• LTIB (Linux Target Image Builder): A tool that can be used to develop and deploy BSPs (Board Support Packages) for a number of embedded target platforms including PowerPC, ARM.
• PatchFiles: This folder provides u-boot/kernel patch files for VAB-820.

1.2.2. EVK Folder Contents

• vab-820_demo_image.tar.bz2: Configure files when user would like to evaluate VAB-820 with Ubuntu root file system.

Note

If a user needs the supporting files for all software mentioned in AMOS-820 HMI Solution Pack document, please contact our regional sales representative for assistance.