Book Image

Architecting and Building High-Speed SoCs

By : Mounir Maaref
5 (1)
Book Image

Architecting and Building High-Speed SoCs

5 (1)
By: Mounir Maaref

Overview of this book

Modern and complex SoCs can adapt to many demanding system requirements by combining the processing power of ARM processors and the feature-rich Xilinx FPGAs. You’ll need to understand many protocols, use a variety of internal and external interfaces, pinpoint the bottlenecks, and define the architecture of an SoC in an FPGA to produce a superior solution in a timely and cost-efficient manner. This book adopts a practical approach to helping you master both the hardware and software design flows, understand key interconnects and interfaces, analyze the system performance and enhance it using the acceleration techniques, and finally build an RTOS-based software application for an advanced SoC design. You’ll start with an introduction to the FPGA SoCs technology fundamentals and their associated development design tools. Gradually, the book will guide you through building the SoC hardware and software, starting from the architecture definition to testing on a demo board or a virtual platform. The level of complexity evolves as the book progresses and covers advanced applications such as communications, security, and coherent hardware acceleration. By the end of this book, you'll have learned the concepts underlying FPGA SoCs’ advanced features and you’ll have constructed a high-speed SoC targeting a high-end FPGA from the ground up.
Table of Contents (20 chapters)
1
Part 1: Fundamentals and the Main Features of High-Speed SoC and FPGA Designs
7
Part 2: Implementing High-Speed SoC Designs in an FPGA
12
Part 3: Implementation and Integration of Advanced High-Speed FPGA SoCs

DMA engines and data movements

Modern SoCs and high-performance IPs include DMA engines to offload data movement from the CPUs and perform it as desired by the software, with the option to notify the CPU once the operation is completed. There are two categories of DMA engines: DMA engines that are included within an IP, and central DMAs that are standalone and connected to the SoC interconnect like any other SoC IP.

IP-integrated DMA engines overview

IP-integrated DMA engines act as data movers on behalf of the IP and the CPU, so the CPU won’t be needed to copy data from system memory to the IP’s local storage or vice versa. Rather, when programmed and armed, once the data is needed or received, the DMA engine autonomously performs the data transfer from source to destination. Then, its control hardware notifies the CPU when the operation has finished executing, usually via an interrupt. The following diagram illustrates an IP-integrated DMA engine:

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