Real World Multicore Embedded Systems

Chapter 15

Bare-Metal Systems

Sanjay Lal, Cofounder of Kyma Systems, Danville, CA, USA

Chapter Outline

Introduction

What is a bare-metal setup?

Who should use bare metal?

Architectural arrangements

Data parallelism: SIMD

Functional parallelism: pipelines

The host processor

I/O

Memory

Inter-process communication

Software architecture

Building the executable image(s)

Example: IPv4 forwarding

Packet forwarding

Next-hop lookup: longest prefix match

The DIR-24-8-BASIC algorithm

Example target architecture: Cavium OCTEON CN3020

Select code examples

Main()

Conclusion

Reference

Introduction

Most computer systems keep the programmer at arm’s length from the details of the microprocessor hardware and other peripherals. The operating system (OS) provides ...