Motorola MVME3100 MOTLoad Firmware, Overview, MOTLoad Implementation and Memory Requirements

MOTLoad Firmware

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Introduction

This chapter describes the basic features of the MOTLoad firmware product, designed by Motorola as the next generation initialization, debugger, and diagnostic tool for high- performance embedded board products using state-of-the-art system memory controllers and bridge chips, such as the MPC8540 processor.

In addition to an overview of the product, this chapter includes a list of standard MOTLoad commands, the default VME and firmware settings that are changeable by the user, remote start, and the alternate boot procedure.

Overview

The MOTLoad firmware package serves as a board power-up and initialization package, as well as a vehicle from which user applications can be booted. A secondary function of the MOTLoad firmware is to serve in some respects as a test suite providing individual tests for certain devices.

MOTLoad is controlled through an easy-to-use, UNIX-like, command line interface. The MOTLoad software package is similar to many end-user applications designed for the embedded market, such as the real time operating systems currently available.

Refer to the MOTLoad Firmware Package User’s Manual, listed in Appendix B, Related Documentation, for more details.

MOTLoad Implementation and Memory Requirements

The implementation of MOTLoad and its memory requirements are product specific. The MVME3100 single-board computer (SBC) is offered with a range of memory (for example, DRAM or flash). Typically, the smallest amount of on-board DRAM that a Motorola SBC has is 32MB. Each supported Motorola product line has its own unique MOTLoad binary image(s). Currently the largest MOTLoad compressed image is less than 1MB in size.

MOTLoad Commands

MOTLoad supports two types of commands (applications): utilities and tests. Both types of commands are invoked from the MOTLoad command line in a similar fashion. Beyond that, MOTLoad utilities and MOTLoad tests are distinctly different.

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