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foss-eda-tools / third_party / shuttle / sky130 / mpw-006 / slot-032 / c6f707b8370c84ecdbb9fe6588da0838651287b3
commitc6f707b8370c84ecdbb9fe6588da0838651287b3[log] [tgz]
authorCharlie <charlie.david.smith@hotmail.co.uk>Sat May 21 01:20:11 2022 +0100
committerCharlie <charlie.david.smith@hotmail.co.uk>Sat May 21 01:20:11 2022 +0100
treef18ee9fbae02a53d091d01f90e3075bab12657df
parent8afd017992b715c894a213ffbe2837a4127750a1 [diff]
Added info on tests that need to be implemented.
1 file changed
tree: f18ee9fbae02a53d091d01f90e3075bab12657df
  1. .github/
  2. def/
  3. docs/
  4. gds/
  5. lef/
  6. mag/
  7. maglef/
  8. openlane/
  9. sdc/
  10. sdf/
  11. signoff/
  12. spef/
  13. spi/
  14. verilog/
  15. .gitignore
  16. LICENSE
  17. Makefile
  18. README.md
README.md

ExperiarSoC

RISC-V SoC designed for the Efabless Open MPW Program. This project

Block diagram of Experiar SoC

Features

  • Dual RV32I cores
  • Per core SRAM
  • JTAG interface
  • External flash controller
  • Shared video SRAM
  • Configurable VGA output
  • 3x UART ports + 1 internal to caravel
  • 1x SPI ports
  • 4x PWM counters with 4x seperate outputs (2 are internal read only)

Memory Map

Memory map for Experiar SoC

Macro Layout

Experiar SoC Macro Layout

Build Status

  • CaravelHost: Success
  • ExperiarCore: Success
  • Flash: Success
  • Peripherals: Success
  • Video: Success
  • WishboneInterconnect: Success
  • user_project_wrapper: Error at step 13
    • Running Global Routing Resizer Timing Optimizations: Routing congestion too high

Tests

verify-peripheral-rtl (-gl)

Status: Success

Runs a number of tests (currently just a very basic gpio test) from the management core to ensure the peripherals work correctly.

ToDo

  • Get it to build
  • Flash controller
  • JTAG core managment controller
  • CSRs
  • Write more tests
  • Fix all of the errors

Reference work and inspiration

  • Zero to ASIC Course: Complete course on ASIC design. Also has useful references and terminology definitions.
  • Openlane Documentation: Reference for a lot of configuration. The Variables and Hardening Macros pages have been particularity useful.
  • Caravel Documentation: Reference for caravel and configuration. This seems slightly out of date, but an alternate version can be found in the github repository.
  • Riscduino: Used for inspiration and as a reference for using openlane. There are a number of similar aspects to this project, but all have been reimplemented rather than copied.