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+% Day 2
+\part{How MTK could use GSM FOSS}
+
+\begin{frame}{Part II - MTK and Free / Open Source Software}
+\tableofcontents
+\end{frame}
+
+\section{Open Source GSM tools for Debugging + Testing}
+
+\begin{frame}{Possible use cases for OpenBSC}
+OpenBSC or OpenBTS in R\&D
+\begin{itemize}
+ \item Inexpensive simulation of GSM network for R\&D
+ \item Flexible since any aspect can be modified by altering source code
+ \item Complex and more exotic parts of GSM protocol spec can be tested
+ \item Much more functionality than CMD 55 / Racal 6103 or similar
+ \item Ability to send malformed L3 messages (fuzzing) for MTK MS stack security improvement
+\end{itemize}
+\end{frame}
+
+\begin{frame}{Other GSM tools}
+\begin{itemize}
+ \item airprobe: Tracing of Um air interface
+ \item SIMtrace: Tracing of SIM card interface
+\end{itemize}
+\end{frame}
+
+\begin{frame}{General advantages of FOSS based solution}
+\begin{itemize}
+ \item MTK has full access to source code
+ \item New features can be added on any level of the protocol stack
+ \item No dependency on a single supplier
+ \item Lower cost means available to more MTK engineers
+ \item Lower cost means available to more MTK customers (factory testing, field tests with OEM customers, ...)
+\end{itemize}
+\end{frame}
+
+\section{Single-Core Android smart phone}
+
+\begin{frame}{MTK feature phone vs. smart phone}
+\begin{itemize}
+ \item MTK's advantage so far: Low cost sigle-core feature phone
+ \begin{itemize}
+ \item Baseband processor runs Nucleus, GSM stack, UI and rich application stack (Camera, H.264, GPRS, TCP/IP, ...)
+ \item Other suppliers have to use dual core
+ \end{itemize}
+ \item However, MTKs Nucleus based OS has custom/proprietary APIs
+ \item Not many 3rd party applications can be installed on the phone
+ \item Android, iPhone, Windows Mobile have standard API / environment
+ \item Thus, MTK needs to offer 'standard' smart phone solution
+\end{itemize}
+\end{frame}
+
+\begin{frame}{Proposal: Single core Android smart phone}
+\begin{itemize}
+ \item Android, WinMobile, etc. have dual-core architecture
+ \begin{itemize}
+ \item GSM/3G protocol stack on baseband processor
+ \item UI + applications on application processor
+ \end{itemize}
+ \item If MTK now goes for Android smart phone, why go dual core?
+ \begin{itemize}
+ \item Simply port L1 code into Linux kernel (IRQ/FIQ driven)
+ \item Make sure you follow the GPL and release L1 as Open Source
+ \item Run your L2/L3/L4 as proprietary userspace process on Linux
+ \end{itemize}
+ \item Single-core Android phone has less ARM core licensing cost and less silicon size
+\end{itemize}
+\end{frame}
+
+\section{Linux development and the community}
+
+\begin{frame}{SoC vendors and Linux ports}
+\begin{itemize}
+ \item A number of SoC vendors have been used with Linux for many years
+ \item Port of Linux / BSP has originally been done by 3rd party or community
+ \item SoC vendors started to become more active in the last 5 years
+ \item Original: Create port, ship it to customer, done.
+ \item SoC customers end up with vendor-specific code
+\end{itemize}
+\end{frame}
+
+\begin{frame}{Disadvantages of vendor ports}
+\begin{itemize}
+ \item Fast progress in mainline Linux kernel development
+ \item Customers want latest kernel for latest features / performance
+ \item Vendor port (not in mainline) always behind mainline
+ \item Porting out-of-mainline vendor port into new mainline is lots of work
+ \item Customers end up with old vendor-specific code
+\end{itemize}
+\end{frame}
+
+\begin{frame}{SoC vendors need to include their port mainline}
+\begin{itemize}
+ \item Major SoC vendors now work together with mainline developers
+ \item Support SoC in latest mainline developer version
+ \item Actively submit port into mainline Linux kernel
+ \item Port in mainline stays automatically current/up-to-date
+ \item Continued maintenance effort is shared by all parties
+\end{itemize}
+\end{frame}
personal git repositories of Harald Welte. Your mileage may vary