1 \documentclass[slidestop
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2 \usepackage{beamerthemesplit
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6 \title{Commercial Libre-RISCV SoC
}
7 \author{Luke Kenneth Casson Leighton
}
14 \huge{Designing a Commercial Libre RISC-V SoC
}\\
16 \Large{Ethical Strategic Leveraging of the benefits
}\\
17 \Large{of Libre and Open SW/HW
}\\
18 \Large{for pure unadulterated Commercial gain
}\\
20 \Large{Chennai
9th RISC-V Workshop
}\\
27 \frame{\frametitle{Credits and Acknowledgements
}
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
}
39 \frame{\frametitle{Why, How, What?
}
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
49 {\it making sure that the people who provide it are
50 financially rewarded
}. Also by empowering diverse team
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?
}
61 \frame{\frametitle{Definitions
}
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)
}
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
}
81 \frame{\frametitle{Interfaces, Block Diagram, of the Libre-RISCV SoC
}
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!
}
89 \frame{\frametitle{Hardware / Development Complexity Comparison
}
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
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")
100 \item {\bf Embedded
}: also pretty easy. Really needs a pinmux. Low clock
101 rate, low power mode. Example: Freedom U310.
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.
111 \frame{\frametitle{TODO
}
114 \item TODO
\vspace{8pt
}
119 \frame{\frametitle{Summary
}
129 {\Huge The end
\vspace{20pt
}\\
130 Thank you
\vspace{20pt
}\\
131 Questions?
\vspace{20pt
}
137 \item http://libre-riscv.org/shakti/m
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