\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{Jyx}
\pdfinfo{
  /Title (op-tee-optee-org-github-com-op-tee.pdf)
  /Creator (Cheatography)
  /Author (Jyx)
  /Subject (OP-TEE  -  optee.org  -  github.com/OP-TEE Cheat Sheet)
}

% Lengths and widths
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\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{OP-TEE  -  optee.org  -  github.com/OP-TEE Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Jyx} via \textcolor{DarkBackground}{\uline{cheatography.com/30486/cs/9089/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}Jyx \\
  \uline{cheatography.com/jyx} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 12th September, 2016.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{x{3.52 cm} x{4.48 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Paths}}  \tn
% Row 0
\SetRowColor{LightBackground}
OP-TEE project : \$ROOT & \$HOME/devel/optee \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Makefiles & \$ROOT/build \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
GP conf Trusted Application & \$ROOT/gp\_conf \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
~~~-{}-\textgreater{} ELF file & \seqsplit{\$ROOT/out/gp\_conf\_ta/67707465-6563-6f6e-666c696e61726f15}.elf \tn 
% Row Count 8 (+ 3)
% Row 4
\SetRowColor{LightBackground}
Hello World Trusted Application & \$ROOT/hello\_world \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
~~~-{}-\textgreater{} ELF file & \seqsplit{\$ROOT/hello\_world/ta/8aaaf200-2450-11e4-abe20002a5d5c51b}.elf \tn 
% Row Count 13 (+ 3)
% Row 6
\SetRowColor{LightBackground}
OP-TEE secure OS & \$ROOT/optee\_os \tn 
% Row Count 14 (+ 1)
% Row 7
\SetRowColor{white}
~~~-{}-\textgreater{} ELF file & \seqsplit{\$ROOT/optee\_os/out/arm/core/tee}.elf \tn 
% Row Count 16 (+ 2)
% Row 8
\SetRowColor{LightBackground}
OP-TEE Client API & \$ROOT/optee\_client \tn 
% Row Count 17 (+ 1)
% Row 9
\SetRowColor{white}
Linux kernel & \$ROOT/linux \tn 
% Row Count 18 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.16 cm} x{5.84 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{make targets (from the build folder)}}  \tn
% Row 0
\SetRowColor{LightBackground}
make all & Builds the entire OP-TEE solution \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
make run & Prepare update ROOT FS and launch QEMU \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
make run-only & Only launches OP-TEE (ROOT FS not updated) \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
make \seqsplit{helloworld} & Build the Hello World TA \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
make \seqsplit{gp\_conf\_ta} & Build the GP conference TA \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
make optee-os & Build OP-TEE OS (secure side) \tn 
% Row Count 12 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.56 cm} x{5.44 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Typical OP-TEE session}}  \tn
% Row 0
\SetRowColor{LightBackground}
1. cd \seqsplit{\$ROOT/build} & Go to the build folder \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
2. make all & Build the solution \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
3. make run & Create/update root fs and launch QEMU \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
4. (qemu) c & Start the emulator \tn 
% Row Count 6 (+ 1)
% Row 4
\SetRowColor{LightBackground}
5. \seqsplit{tee-supplicant} \& & In "Normal World" window, start tee-supplicant \tn 
% Row Count 8 (+ 2)
% Row 5
\SetRowColor{white}
6a. xtest & Run the test suite (Normal World) \tn 
% Row Count 10 (+ 2)
% Row 6
\SetRowColor{LightBackground}
6b. \seqsplit{hello\_world} & Run the Hello World TA (Normal World) \tn 
% Row Count 12 (+ 2)
% Row 7
\SetRowColor{white}
6c. \seqsplit{gp\_conf\_client} & Run the GP conference TA (Normal World) \tn 
% Row Count 14 (+ 2)
% Row 8
\SetRowColor{LightBackground}
7. (qemu) q & Quit QEMU \tn 
% Row Count 15 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.48 cm} x{5.52 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{QEMU}}  \tn
% Row 0
\SetRowColor{LightBackground}
(qemu) c & Start the emulator \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
(qemu) q & Stop the emulator \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.4 cm} x{5.6 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Normal World window - root@vExpress}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{tee-supplicant} \& & Launches tee-supplicant \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
xtest & Run OP-TEE's test suite \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
hello\_world & Run Hello World Trusted Application \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
\seqsplit{gp\_conf\_client} & Run GP conference Trusted Application \tn 
% Row Count 7 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.52 cm} x{4.48 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{GDB commands (in the debugger)}}  \tn
% Row 0
\SetRowColor{LightBackground}
./gdb & Launch GDB (from build folder) \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
optee & Connects to target and load tee.elf \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
helloworld & Add-symbols for Hello World TA \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
gp\_conf\_ta & Add-symbols for GP conference TA \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
p \textless{}variable\textgreater{} & Print variable \tn 
% Row Count 9 (+ 1)
% Row 5
\SetRowColor{white}
x/4wx \textless{}address\textgreater{} & Show 4 words in hex at memory \textless{}address\textgreater{} \tn 
% Row Count 11 (+ 2)
% Row 6
\SetRowColor{LightBackground}
b \textless{}function\textgreater{} & Set a breakpoint for \textless{}function\textgreater{} \tn 
% Row Count 13 (+ 2)
% Row 7
\SetRowColor{white}
info b & List all breakpoints \tn 
% Row Count 14 (+ 1)
% Row 8
\SetRowColor{LightBackground}
d \textless{}breakpoint number\textgreater{} & Delete breakpoint \tn 
% Row Count 16 (+ 2)
% Row 9
\SetRowColor{white}
n & Jump to next line \tn 
% Row Count 17 (+ 1)
% Row 10
\SetRowColor{LightBackground}
s & Step into function \tn 
% Row Count 18 (+ 1)
% Row 11
\SetRowColor{white}
symbol-file \textless{}path\textgreater{}/name.elf & Loads symbols \tn 
% Row Count 20 (+ 2)
% Row 12
\SetRowColor{LightBackground}
add-symbol-file \textless{}path\textgreater{}/name.elf & Adds additional symbols \tn 
% Row Count 22 (+ 2)
% Row 13
\SetRowColor{white}
\$HOME/.gdbinit & Configuration file for GDB \tn 
% Row Count 24 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.64 cm} x{5.36 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{VirtualBox Image}}  \tn
% Row 0
\SetRowColor{LightBackground}
Login / Password & optee / optee \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
VirtualBox downloads & \seqsplit{www.virtualbox.org/wiki/Downloads} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
Import image & File -\textgreater{} Import Alliance -\textgreater{} select \textless{}optee.ova\textgreater{} \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}