From 619c5455698ef5ec8f425c86bd214a6927d19e52 Mon Sep 17 00:00:00 2001
From: Manuel Traut <manut@mecka.net>
Date: Wed, 6 Apr 2011 00:31:12 +0200
Subject: created pres for mtd and ubi

Signed-off-by: Manuel Traut <manut@mecka.net>
---
 flash-memory/mtd/pres_mtd_en.tex | 75 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 flash-memory/mtd/pres_mtd_en.tex

(limited to 'flash-memory/mtd/pres_mtd_en.tex')

diff --git a/flash-memory/mtd/pres_mtd_en.tex b/flash-memory/mtd/pres_mtd_en.tex
new file mode 100644
index 0000000..398a591
--- /dev/null
+++ b/flash-memory/mtd/pres_mtd_en.tex
@@ -0,0 +1,75 @@
+\input{configpres}
+
+\subsection{Memory Technology Devices (MTD)}
+
+\title{\lq Memory Technology Devices (MTD)\rq}
+\maketitle
+
+\begin{frame}
+	\tableofcontents
+\end{frame}
+
+\subsubsection{Overview}
+\begin{frame}
+\frametitle{Overview}
+\begin{itemize}
+\item designed for flash devices (NAND, NOR, DataFlash, OneNAND, \dots)
+\pause
+\item software- and hardware-ECC support
+\pause
+\item takes care on deletion of specified eraseblocksizes
+\pause
+\item wiring of chip is not relevant (Localbus, SPI, \dots)
+\end{itemize}
+\end{frame}
+
+\begin{frame}
+\frametitle{None MTD Flash Devices}
+\begin{itemize}
+\item USB sticks, CompactFlash Cards, SD Cards, SSD\dots
+\pause
+\item devices have NAND flash, but own flashcontroller
+\pause
+\item kernel handles them as block device, like a regular HDD
+\pause
+\item flash properties, like eraseblocksize, are hidden by flashcontroller
+\end{itemize}
+\end{frame}
+
+\subsubsection{MTD Kernelsubsystem}
+\begin{frame}
+\frametitle{responsibility of the MTD subsystem}
+\begin{itemize}
+\item definition of a userspace interface
+\pause
+\item partitioning of mtd devices (mtd0, mtd1, \dots)
+\pause
+\item hides flash internals from user
+\end{itemize}
+\end{frame}
+
+\begin{frame}
+\frametitle{NOT part of the MTD subsystem}
+\begin{itemize}
+\item filesystems
+\pause
+\item wear-leveling
+\pause
+\item protection of writing to bad blocks
+\pause
+\item data protection for writes during power loss
+\end{itemize}
+\end{frame}
+
+\begin{frame}
+\frametitle{mtdblock}
+\begin{itemize}
+\item enable use of common filesystem on flash devices
+\pause
+\item bad idea: no wear-leveling, bad performance, \dots
+\pause
+\item obsoleted by UBI
+\end{itemize}
+\end{frame}
+
+\input{tailpres}
-- 
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