VHDL Building
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How to manually build and simulate a VHDL project? A brief guide is provided in this presentation. GHDL was chosen to approach the goal. It is a free and open-source VHDL simulator published at https://github.com/ghdl/ghdl. The presentation was given at the Faculty of Informatics of Masaryk University in 2018 within the PA176 Architecture of Digital Systems II course.
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As many embedded Linux developers use Buildroot to build their system, it sounded natural to provide an easy-to-use integration with Eclipse. To achieve that, we:
Developed an Eclipse plugin that automatically registers the available Buildroot toolchains into Eclipse CDT. This allows application developers to transparently build their application, and then execute it and debug it on the embedded target platform directly within Eclipse.
Created a specialized Eclipse version bundling all the useful existing plug-ins for embedded Linux developers: Eclipse CDT, our specialized Buildroot plugin, the Autotools plugin, Linux Tools plugins, etc.
Through this talk, we would like to demonstrate how Eclipse has been extended to match the needs of embedded Linux developers, and we will perform a live demonstration of these capabilities using an ARM development platform for which Eclipse will help build, execute and debug applications.
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Jednoduchá otázka a jednoduchá odpověď. V prezentaci se zaměřuji na popis výhod spojených s používáním GitHubu a poukazuji na některé z vlastních pozitivních zkušeností. Poté se věnuji praktickým zkušenostem, které může GitHub nabídnout posluchačům.
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Návrh modelu procesoru
Další důležitý krok v mém procesorovém životě — představení procesoru RISC63 v rámci obhajoby mé bakalářské práce na Fakultě informatiky Masarykovy univerzity v roce 2020. Procesor je popsán v jazyce VHDL.
Zdrojový kód RISC63 (English friendly): https://github.com/dominiksalvet/risc63
Text bakalářské práce: https://github.com/dominiksalvet/bachelor-thesis
Installing Software from Source
How to install software from its source code? A simple question with a simple answer presented here only using images. How elegant. The last slide can be used as a handout for the audience.
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A simple image-based presentation on the topic of transforming an idea into a binary code. The last slide represents a handout for the presentation.
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Limen Alpha Processor
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Představení mého prvního uceleného procesoru Limen z roku 2016 v rámci obhajoby maturitní práce na SŠIEŘ Rožnov pod Radhoštěm. Tento procesor dal později vzniknout mému prvnímu dvoujádrovému procesoru Limen Alpha. Procesor byl popsán v jazyce VHDL.
Zdrojový kód Limen: https://github.com/dominiksalvet/limen
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VHDL Building
- 2. Common VHDL Design Flow
- 4. GHDL Compiler and Simulator
- 5. Then Why Use GHDL? ● speed (it is not an interpreter) ● runs on Windows, Linux and even on macOS ● target platform independent (Xilinx, Altera, Lattice) ● easy start with manual building ● decent documentation ● it is open-source software (see this GitHub repository)
- 6. How To Use GDHL? ● it is terminal-based program ● very similar to gcc in terms of use ● it has multiple back-ends, such as mcode, gcc and LLVM ● -a option ● analyzes/compiles one or more files ● creates object files as a result ● -e option ● elaborates an unit (must be already analyzed) ● creates an executable file (usable for test benches)
- 7. Example of Using GHDL ● we need to follow the order of GHDL commands ● simulate clk_divider module with associated clk_divider_tb 1.ghdl -a --std=93 clk_divider.vhdl 2.ghdl -a --std=93 clk_divider_tb.vhdl 3.ghdl -e --std=93 clk_divider_tb 4.ghdl -r --std=93 clk_divider_tb or ./clk_divider_tb
- 8. Makefile ● a file used for make build automation ● it can be used literally for any software to build ● it can be invoked by make command in the directory containing the makefile or Makefile file ● basically it contains a set of rules with the following form: target: dependencies system command(s) ● when used only make command, it will start from the first stated target ● to choose the entry target, use make target command
- 9. Example of a Makefile (1) clk_divider_tb: clk_divider_tb.o ghdl -e --std=93 clk_divider_tb clk_divider_tb.o: clk_divider_tb.vhdl clk_divider.o ghdl -a --std=93 clk_divider_tb.vhdl clk_divider.o: clk_divider.vhdl ghdl -a --std=93 clk_divider.vhdl
- 10. Example of a Makefile (2) .PHONY: run clean run: clk_divider_tb ghdl -r --std=93 @< clean: rm -f clk_divider_tb rm -f *.o rm -f *.cf
- 11. Questions? Dominik Salvet I do not own copyright to images.