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<h1 id="firstHeading" class="firstHeading">Milkymist Linux cheat sheet</h1>
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<h3 id="siteSub">From Milkymist Wiki</h3>
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<div id="jump-to-nav">Jump to: <a href="index.php%3Ftitle=Milkymist_Linux_cheat_sheet.html#column-one">navigation</a>, <a href="index.php%3Ftitle=Milkymist_Linux_cheat_sheet.html#searchInput">search</a></div> <!-- start content -->
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<table id="toc" class="toc" summary="Contents"><tr><td><div id="toctitle"><h2>Contents</h2></div>
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<li class="toclevel-1"><a href="index.php%3Ftitle=Milkymist_Linux_cheat_sheet.html#Kernel_compilation"><span class="tocnumber">1</span> <span class="toctext">Kernel compilation</span></a></li>
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<li class="toclevel-1"><a href="index.php%3Ftitle=Milkymist_Linux_cheat_sheet.html#Building_userspace_binaries"><span class="tocnumber">2</span> <span class="toctext">Building userspace binaries</span></a></li>
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<li class="toclevel-1"><a href="index.php%3Ftitle=Milkymist_Linux_cheat_sheet.html#Building_SDL"><span class="tocnumber">3</span> <span class="toctext">Building SDL</span></a></li>
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<li class="toclevel-1"><a href="index.php%3Ftitle=Milkymist_Linux_cheat_sheet.html#Building_DoPE_.28Genode_FX.29_SDL-based_demo"><span class="tocnumber">4</span> <span class="toctext">Building DoPE (Genode FX) SDL-based demo</span></a></li>
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<li class="toclevel-1"><a href="index.php%3Ftitle=Milkymist_Linux_cheat_sheet.html#Forcing_gigabit_Ethernet_cards_in_100M_mode"><span class="tocnumber">5</span> <span class="toctext">Forcing gigabit Ethernet cards in 100M mode</span></a></li>
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</ul>
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<a name="Kernel_compilation" id="Kernel_compilation"></a><h1><span class="editsection">[<a href="http://milkymist.org/wiki/index.php?title=Milkymist_Linux_cheat_sheet&action=edit&section=1" title="Edit section: Kernel compilation">edit</a>]</span> <span class="mw-headline"> Kernel compilation </span></h1>
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<pre> make mrproper
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ARCH=lm32 make defconfig
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ARCH=lm32 make menuconfig
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ARCH=lm32 CROSS_COMPILE=lm32-elf- make simpleImage.milkymist_one
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</pre>
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<p>To boot with flterm (slow): <code>flterm --port /dev/ttyUSB0 --kernel arch/lm32/boot/simpleImage.milkymist_one</code>
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</p><p>Warning! "vmlinux" images do not contain the DTS and will not boot.
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</p>
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<a name="Building_userspace_binaries" id="Building_userspace_binaries"></a><h1><span class="editsection">[<a href="http://milkymist.org/wiki/index.php?title=Milkymist_Linux_cheat_sheet&action=edit&section=2" title="Edit section: Building userspace binaries">edit</a>]</span> <span class="mw-headline"> Building userspace binaries </span></h1>
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<p>The following commands should be used. Using the current lm32-linux toolchain, it's VERY easy to produce broken binaries that crash the board when run.
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</p>
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<pre> lm32-linux-gcc -Wl,-q -mmultiply-enabled -mdivide-enabled -mbarrel-shift-enabled -msign-extend-enabled [...]
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lm32-linux-strip --strip-unneeded --strip-debug --remove-section=.note --remove-section=.comment [...]
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</pre>
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<p>These commands are kludgy and are necessary to be compatible with Theobroma's f*ed up FDPIC loader, that we need to fix.
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</p>
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<a name="Building_SDL" id="Building_SDL"></a><h1><span class="editsection">[<a href="http://milkymist.org/wiki/index.php?title=Milkymist_Linux_cheat_sheet&action=edit&section=3" title="Edit section: Building SDL">edit</a>]</span> <span class="mw-headline"> Building SDL </span></h1>
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<pre> ./configure --without-x --enable-video-fbcon --disable-shared --enable-static \
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--prefix=/home/lekernel/sdl-lm32 --disable-esd --disable-alsa \
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--disable-video-directfb --disable-sdl-dlopen --disable-arts --host=lm32-linux \
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--build=i686-pc-linux-gnu
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make
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make install
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</pre>
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<a name="Building_DoPE_.28Genode_FX.29_SDL-based_demo" id="Building_DoPE_.28Genode_FX.29_SDL-based_demo"></a><h1><span class="editsection">[<a href="http://milkymist.org/wiki/index.php?title=Milkymist_Linux_cheat_sheet&action=edit&section=4" title="Edit section: Building DoPE (Genode FX) SDL-based demo">edit</a>]</span> <span class="mw-headline"> Building DoPE (Genode FX) SDL-based demo </span></h1>
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<p>Edit lib/sdl/scrdrv.c and hardcode your screen resolution:
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</p>
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<pre> static long set_screen(long width, long height, long depth)
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{
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scr_width = 640;
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scr_height = 480;
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scr_depth = 16;
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(...)
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screen = SDL_SetVideoMode(scr_width, scr_height, scr_depth, SDL_SWSURFACE);
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</pre>
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<pre> CROSS_PREFIX=lm32-linux- CFLAGS=-I/home/lekernel/sdl-lm32/include\ \
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-mmultiply-enabled\ -mdivide-enabled\ -mbarrel-shift-enabled\ \
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-msign-extend-enabled LDFLAGS=-L/home/lekernel/sdl-lm32/lib make sdl
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# linking fails, do it manually:
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cd test/sdl
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lm32-linux-gcc -L/home/lekernel/sdl-lm32/lib -L../../lib/sdl \
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-Wl,--start-group platform.o test.o disp_img.o settings.o grid.o \
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dopecmd.o colors.o slides.o slideshow.o led.o -ldope -Wl,--end-group -Wl,-q \
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-lSDL -lpthread -o dopetest
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lm32-linux-strip --strip-unneeded --strip-debug --remove-section=.note --remove-section=.comment dopetest
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</pre>
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<a name="Forcing_gigabit_Ethernet_cards_in_100M_mode" id="Forcing_gigabit_Ethernet_cards_in_100M_mode"></a><h1><span class="editsection">[<a href="http://milkymist.org/wiki/index.php?title=Milkymist_Linux_cheat_sheet&action=edit&section=5" title="Edit section: Forcing gigabit Ethernet cards in 100M mode">edit</a>]</span> <span class="mw-headline"> Forcing gigabit Ethernet cards in 100M mode </span></h1>
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<p>If you are using a gigabit PHY (ML401) and you are connected in 1000M mode, Minimac does not support it.
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If the other side is running Linux, this will put its Ethernet interface in 100M mode:
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</p>
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<pre> ethtool -s eth0 advertise 0x008
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</pre>
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