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RISC-V 30910 kassem_ summit 2020 - so_c_gen

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RISC-V International
RISC-V International

This document proposes a no-human-in-the-loop open-source "idea to manufacturing" SoC compiler. It consists of SoCGen, which generates RTL from a JSON description, and OpenLANE, which produces a clean GDSII layout from the RTL with no human intervention. SoCGen includes a library of open-source verified IP cores and supports multiple bus architectures. OpenLANE uses carefully-curated open-source EDA tools tuned for an open PDK. The goal is to streamline and automate the entire custom SoC design process from concept to silicon to enable more widespread adoption.

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A Complete no-human-in-the-loop Open-Source "Idea to Manufacturing" SoC Compiler Mohamed Shalan (mshalan@aucegypt.edu) Mohamed Kassem (mkk@efabless.com)
Introduction ● Custom SoC development is a complex expensive process ▪ Not good for deeply embedded devices ● Large varieties of microcontrollers are out there to address different requirements for embedded applications ● Some embedded applications can benefit from custom SoCs ▪ Custom accelerators, lower power, custom form factor, new sensors, … ▪ Needs to simplify the design process to enable wider impact
Custom SoC Development ● How to enable it for deep embedded system designers? ▪ Lower Cost: Engineering, Tools, IPs, SW, … ▪ Shorter time to market ▪ Streamlined design process from RTL to a manufacturable GDSII
Open Hardware Age
SoC Design Automation Flow JSON SoCGen RTL PDK OpenLANE GDSII IP Lib
Benefits ▪ Facilitate automatic SoC design (RTL to clean GDSII) ▪ Reduce time and effort to fabrication ▪ Enable Rapid Design Space Exploration ▪ Promote Design Reuse
SoCGen JSON SoCGen RTL + TB PDK IP Lib • Peripherals • Masters • Bus Components DDs DOCs
SoCGen
SoCGen IP Library ▪ JSON descriptions and Verilog HDL for open-source verified IPs ▪ Examples: GPIO, UART, I2C master, SPI master, timer, PWM, Memory controllers, … ▪ Can be bus-specific or generic ▪ Bus wrappers are auto-generated
SoCGen ● Supported Buses: AHB-Lite, APB and Wishbone ● Masters: Any master with supported bus interfaces can be used after creating a JSON description file ● Different topologies: ▪ Multiple Masters on the same high performance bus ▪ One Master on different high performance busses ▪ Multiple sub-busses on the same high performance bus
SoC Design Automation Flow JSON SoCGen RTL PDK OpenLANE GDSII IP Lib
OpenLANE ▪ Main Goal: Produce a clean GDSII with no human intervention (no- human-in-the-loop) ▪ Clean means: Manufacturable and testable ▪ No LVS Violations ▪ No DRC Violations ▪ Timing Violations? WIP - engineered margins
OpenLANE ● Started as an Open-Source Flow for a True Open Source Tape-out Experiment ● striVe is a family of open everything SoCs ▪ Open PDK, Open EDA, Open RTL, Open GDSII ▪ Design verification setup is included
striVe SoC Family
OpenLANE ▪ Main Goal: Produce a clean GDSII with no human intervention (no-human-in-the-loop) ▪ Open Source (Apache 2.0) ▪ Tuned for SKY130A Open PDK by SkyWater ▪ Can be used to harden Macros and SoCs ▪ Two modes of operation: Autonomous or Interactive ▪ Design Space Exploration
OpenLANE Yosys ABC
OpenLANE ● 16 “carefully-curated” EDA tools from different projects ● Swiss Army Knife (SAK) with 70+ utilities: Pre-processing, Optimization, Abstraction of views, etc. ● For the savvy designer - 40 design/flow configurations ● More than 40 open-source designs with their known zero-DRC configurations
OpenLANE ● GH repo became public on July 20, 2020 ● 4 Months Later: ▪ 1400 Unique Clones ▪ 180 Stars ▪ 41 Forks ▪ …
OpenMPW Program + • Standard Harness Setup • Management/User resources • 40 open slots • ~100 parts & 5 harness boards Caravel SoC User Space First: Nov 30, 2020 More in 2021 github.com/efabless/caravel
Thank You! SoCGen OpenLANE

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RISC-V 30910 kassem_ summit 2020 - so_c_gen

  • 1. A Complete no-human-in-the-loop Open-Source "Idea to Manufacturing" SoC Compiler Mohamed Shalan (mshalan@aucegypt.edu) Mohamed Kassem (mkk@efabless.com)
  • 2. Introduction ● Custom SoC development is a complex expensive process ▪ Not good for deeply embedded devices ● Large varieties of microcontrollers are out there to address different requirements for embedded applications ● Some embedded applications can benefit from custom SoCs ▪ Custom accelerators, lower power, custom form factor, new sensors, … ▪ Needs to simplify the design process to enable wider impact
  • 3. Custom SoC Development ● How to enable it for deep embedded system designers? ▪ Lower Cost: Engineering, Tools, IPs, SW, … ▪ Shorter time to market ▪ Streamlined design process from RTL to a manufacturable GDSII
  • 5. SoC Design Automation Flow JSON SoCGen RTL PDK OpenLANE GDSII IP Lib
  • 6. Benefits ▪ Facilitate automatic SoC design (RTL to clean GDSII) ▪ Reduce time and effort to fabrication ▪ Enable Rapid Design Space Exploration ▪ Promote Design Reuse
  • 9. SoCGen IP Library ▪ JSON descriptions and Verilog HDL for open-source verified IPs ▪ Examples: GPIO, UART, I2C master, SPI master, timer, PWM, Memory controllers, … ▪ Can be bus-specific or generic ▪ Bus wrappers are auto-generated
  • 10. SoCGen ● Supported Buses: AHB-Lite, APB and Wishbone ● Masters: Any master with supported bus interfaces can be used after creating a JSON description file ● Different topologies: ▪ Multiple Masters on the same high performance bus ▪ One Master on different high performance busses ▪ Multiple sub-busses on the same high performance bus
  • 11. SoC Design Automation Flow JSON SoCGen RTL PDK OpenLANE GDSII IP Lib
  • 12. OpenLANE ▪ Main Goal: Produce a clean GDSII with no human intervention (no- human-in-the-loop) ▪ Clean means: Manufacturable and testable ▪ No LVS Violations ▪ No DRC Violations ▪ Timing Violations? WIP - engineered margins
  • 13. OpenLANE ● Started as an Open-Source Flow for a True Open Source Tape-out Experiment ● striVe is a family of open everything SoCs ▪ Open PDK, Open EDA, Open RTL, Open GDSII ▪ Design verification setup is included
  • 15. OpenLANE ▪ Main Goal: Produce a clean GDSII with no human intervention (no-human-in-the-loop) ▪ Open Source (Apache 2.0) ▪ Tuned for SKY130A Open PDK by SkyWater ▪ Can be used to harden Macros and SoCs ▪ Two modes of operation: Autonomous or Interactive ▪ Design Space Exploration
  • 17. OpenLANE ● 16 “carefully-curated” EDA tools from different projects ● Swiss Army Knife (SAK) with 70+ utilities: Pre-processing, Optimization, Abstraction of views, etc. ● For the savvy designer - 40 design/flow configurations ● More than 40 open-source designs with their known zero-DRC configurations
  • 18. OpenLANE ● GH repo became public on July 20, 2020 ● 4 Months Later: ▪ 1400 Unique Clones ▪ 180 Stars ▪ 41 Forks ▪ …
  • 19. OpenMPW Program + • Standard Harness Setup • Management/User resources • 40 open slots • ~100 parts & 5 harness boards Caravel SoC User Space First: Nov 30, 2020 More in 2021 github.com/efabless/caravel

Editor's Notes

  1. Embedded SoC needs to be cheap to suite application agreesive cost requirements. Large number of microcontrollers are available to How to enable SoC design
  2. To laverage OS H/W