shakti/m_class/libre_riscv_chennai_2018.tex

   1 \documentclass[slidestop]{beamer}
   2 \usepackage{beamerthemesplit}
   3 \usepackage{graphics}
   4 \usepackage{pstricks}
   5
   6 \title{Commercial Libre-RISCV SoC}
   7 \author{Luke Kenneth Casson Leighton}
   8
   9
  10 \begin{document}
  11
  12 \frame{
  13    \begin{center}
  14     \huge{Designing a Commercial Libre RISC-V SoC}\\
  15     \vspace{32pt}
  16     \Large{Ethical Strategic Leveraging of the benefits}\\
  17     \Large{of Libre and Open SW/HW}\\
  18     \Large{for pure unadulterated Commercial gain}\\
  19     \vspace{24pt}
  20     \Large{Chennai 9th RISC-V Workshop}\\
  21     \vspace{16pt}
  22     \large{\today}
  23   \end{center}
  24 }
  25
  26
  27 \frame{\frametitle{Credits and Acknowledgements}
  28
  29  \begin{itemize}
  30    \item The Designers of RISC-V\vspace{15pt}
  31    \item The Shakti Group\vspace{15pt}
  32    \item Prof. G S Madhusudan\vspace{15pt}
  33    \item Neel Gala\vspace{15pt}
  34    \item Rishabh Jain\vspace{15pt}
  35   \end{itemize}
  36 }
  37
  38
  39 \frame{\frametitle{Why, How, What?}
  40
  41  \begin{itemize}
  42    \item Why? Because these days it's just not necessary to
  43          make [un]ethical compromises in order to make a profitable,
  44          desirable mass-volume product\\
  45          {\it (There's enough companies doing that: where it's got us??)}
  46    \item How? By leveraging the long-establised strategic cost and
  47          maintenance benefits of libre-licensed software (and
  48          HDL) and
  49          {\it making sure that the people who provide it are
  50          financially rewarded}.  Also by empowering diverse team
  51          collaboration
  52    \item What? A 2.5ghz RISC-V 64-bit SoC that has
  53                  a 3D Embedded GPU, 1080p Video decode, and interfaces
  54                  to make it attractive for use in tablets, netbooks, industrial
  55                  embedded and more.  22nm or less, under 400 pins, under USD \$4.\\
  56   {\it All sounds obvious... but is it practical and achievable?}
  57   \end{itemize}
  58 }
  59
  60
  61 \frame{\frametitle{Definitions}
  62
  63  \begin{itemize}
  64    \item {\bf Business}: the provision of a service and being
  65                  commensurately financially rewarded for doing so
  66    \item {\bf Spongeing}: the provision of a service and being
  67                   taken advantage of for doing so {\it (cf: Professor Yunus)}
  68         \item {\bf An ethical act}: an act that increases truth,
  69                   love, awareness or creativity for one or more people
  70                   (including yourself), {\it without} reducing those
  71                   same four qualities {\it for anyone}
  72         \item {\bf The Four Freedoms}: the rights and guarantees
  73                   associated with and embedded within GNU Licenses {\it (cf: FSF)}
  74   \end{itemize}
  75   {\it Is it possible to ethically do business and respect the
  76    Four Freedoms? That's where it gets interesting, as there are
  77    even cases where the Four Freedoms are unethical.  Note: google's
  78    former motto "don't be evil" is clearly (unintentionally) unethical}
  79 }
  80
  81 \frame{\frametitle{Interfaces, Block Diagram, of the Libre-RISCV SoC}
  82  \begin{center}
  83   \includegraphics[height=2.1in]{../shakti_libre_riscv.jpg}\\
  84   {\bf Separate Power Domains for GPIO banks, Variable voltages
  85     required, low-power sleep states etc.  Quite involved!}
  86  \end{center}
  87 }
  88
  89 \frame{\frametitle{Hardware / Development Complexity Comparison}
  90
  91  \begin{itemize}
  92    \item {\bf Server}: relatively easy. PCIe, RapidIO, SATA, (1/10) GbE,
  93                  DDR3/4 or HyperRAM. No multiplexing: all interfaces dedicated
  94                  and high-speed differential pairs
  95                  \vspace{8pt}
  96    \item {\bf Desktop}: really just a variant of Server.
  97              Graphics is a PCIe Card (except if integrated).  Peripherals
  98              often done in dedicated external ICs ("Southbridge")
  99              \vspace{8pt}
 100    \item {\bf Embedded}: also pretty easy.  Really needs a pinmux.  Low clock
 101          rate, low power mode.  Example: Freedom U310.
 102          \vspace{8pt}
 103    \item {\bf Mobile}: HARD. Performance/Watt matters $=>$ variable core
 104                  voltage domains {\it per core}.  Number of pins matters.  Cost
 105                  matters.  Pinmux absolutely critical.
 106              \vspace{8pt}
 107   \end{itemize}
 108 }
 109
 110
 111 \frame{\frametitle{TODO}
 112
 113  \begin{itemize}
 114    \item TODO\vspace{8pt}
 115   \end{itemize}
 116 }
 117
 118
 119 \frame{\frametitle{Summary}
 120
 121  \begin{itemize}
 122    \item TODO
 123   \end{itemize}
 124 }
 125
 126
 127 \frame{
 128   \begin{center}
 129     {\Huge The end\vspace{20pt}\\
 130                    Thank you\vspace{20pt}\\
 131                    Questions?\vspace{20pt}
 132         }
 133   \end{center}
 134
 135   \begin{itemize}
 136         \item Discussion:
 137         \item http://libre-riscv.org/shakti/m\_class/
 138   \end{itemize}
 139 }
 140
 141
 142 \end{document}