181 lines
4.5 KiB
HTML
181 lines
4.5 KiB
HTML
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
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<title>reveal.js</title>
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<link rel="stylesheet" href="dist/reset.css">
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<link rel="stylesheet" href="dist/reveal.css">
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<link rel="stylesheet" href="dist/theme/sky.css">
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<!-- Theme used for syntax highlighted code -->
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<link rel="stylesheet" href="plugin/highlight/zenburn.css">
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</head>
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<body>
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<div class="reveal">
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<div class="slides">
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<section>
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<h1>Xous</h1>
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<h2>Embedded Multiprocess Microkernel</h2>
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<h3>17 April 2024, Sean Cross</h3>
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</section>
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<section>
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<h2>Outline</h2>
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<ol>
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<li>About Me</li>
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<li>Project history</li>
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<li>Why a new OS?</li>
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<li>What can it do?</li>
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<li>How do I use it?</li>
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</ol>
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</section>
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<section>
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<section>
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<h2>About Me</h2>
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<ul>
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<li>Live in Singapore</li>
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<li>Enjoy understanding systems</li>
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<li>Low-level is best</li>
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</ul>
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</section>
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<section>
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<h2>Novena: Open laptop</h2>
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<div class="r-hstack">
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<div>
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<img data-src="img/novena-1068_jpg_md-xl.jpg" height="500">
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</div>
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<div>
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<ul>
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<li>Always wanted to build a laptop</li>
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<li>"Relatively Large" ARM Cortex A9</li>
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<li>32 GB disk, 4 GB RAM</li>
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<li>Linux</li>
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</ul>
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</div>
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</div>
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</section>
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<section>
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<img data-src="img/novena-1089_jpg_project-body.jpg">
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</section>
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<section>
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<h2>Chibitronics: Programming for 8-year-olds</h2>
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<div class="r-hstack">
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<div>
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<img data-src="img/ltc.jpg" height="500">
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</div>
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<div>
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<ul>
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<li>Always wanted to build a laptop</li>
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<li>"Relatively Small" ARM Cortex M0+</li>
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<li>32 kB flash, 4 kB RAM</li>
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<li>ChibiOS</li>
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</ul>
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</div>
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</div>
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</section>
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<section>
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<h2>Precursor Design</h2>
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<div class="r-hstack">
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<div>
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<img data-src="img/betrusted_pvt_blockdiag.png" height="500">
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</div>
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<div>
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<ul>
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<li>Two FPGA-based CPUs</li>
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<li>RV32IMAC based on VexRiscv</li>
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<li>128 MB flash, 16 MB RAM</li>
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<li class="fragment">Operating System?</li>
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</ul>
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</div>
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</div>
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</section>
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<section>
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<img data-src="img/betrusted_pvt_blockdiag.png">
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</section>
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<section>
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<h2>Operating System Selection</h2>
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<ul>
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<li>Memory Protection</li>
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<li>Not Linux</li>
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<li>Rust is a new thing</li>
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</ul>
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</section>
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</section>
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<section>
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<section>
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<h2>Xous Design</h2>
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</section>
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<section>
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<h2>Brief Specs</h2>
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<ul>
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<li>Kernel is 17 ksloc</li>
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<!-- * 6k of that is a RISC-V disassembler for optional GDB support -->
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<li>Threads</li>
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<li>Processes</li>
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<li>Tier 2 Rust support</li>
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<!-- * libstd -->
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<li>Entire project built on <i>stable</i> Rust</li>
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</ul>
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</section>
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<section>
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<h2>Other Features</h2>
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<ul>
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<li>Fully Rust</li>
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<li>Microkernel</li>
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<li>Stable channel</li>
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<li>Requires an MMU</li>
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<li>Interrupts in userspace</li>
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<li>Each page of memory is mapped once</li>
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</ul>
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</section>
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<section>
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<h2>More Specs</h2>
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<ul>
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<li>Kernel is single-threaded</li>
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<li>Services use well-defined API calls</li>
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<li>All drivers provided in user space</li>
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<li>Each page of memory can only be lent once</li>
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</ul>
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</ul>
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</section>
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<section>
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<h2>How can I use it?</h2>
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<ul>
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<li>Talk to system vendors -- get them to include MMUs!</li>
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<li>Emulation is easiest -- Renode support</li>
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</ul>
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</section>
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</section>
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<section>
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<h2>Thank you!</h2>
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<h2>github.com/betrusted-io/xous-core</h2>
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<!-- <h3 class="fragment">Questions?</h3> -->
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</section>
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</div>
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</div>
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<script src="dist/reveal.js"></script>
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<script src="plugin/notes/notes.js"></script>
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<script src="plugin/markdown/markdown.js"></script>
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<script src="plugin/highlight/highlight.js"></script>
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<script>
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// More info about initialization & config:
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// - https://revealjs.com/initialization/
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// - https://revealjs.com/config/
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Reveal.initialize({
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hash: true,
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controls: false,
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width: 1200,
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height: 700,
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// Learn about plugins: https://revealjs.com/plugins/
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plugins: [RevealMarkdown, RevealHighlight, RevealNotes]
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});
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</script>
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</body>
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</html>
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