Raspberry Pi

1/1/2013 Happy New Year!

Today I am thinking that this will be used as a car computer.

I got a heavy duty 7 port USB hub for it, a nice cast al box, and now I want to make it work with my Lilliput 7" DisplayLink monitor.

To do that I will need to compile a kernel (ugh! back to doing that again!)

See also 8track and Lilliput DisplayLink monitor

DisplayLink kernel build

Some help with kernels and DisplayLink http://karuppuswamy.com/wordpress/2012/08/17/lilliput-displaylink-usb-monitor-um-70-17e902a9-with-raspberry-pi-on-raspbian/

Following Mitchtech kernel compile instructions with a few variations. I am using Linux Mint 14 as my build host. This installs the newest (4.7) compiler and creates symlinks. This step (building a working ARM tool chain) used to take days to figure out. Ah, progress! I love the Linux world I live in!

sudo apt-get install gcc-arm-linux-gnueabi git-core ncurses-dev

Fetching code

mkdir -p ~/src/raspberrypi
cd ~/src/raspberrypi
git clone https://github.com/raspberrypi/tools.git
git clone https://github.com/raspberrypi/linux.git
cd linux

make ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabi- bcmrpi_cutdown_defconfig
# enabled the DisplayLink module and disable many things I will never use
make ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabi- menuconfig
make ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabi- -k -j5
mkdir ../modules
make modules_install ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabi- INSTALL_MOD_PATH=../modules/
cd ../tools/mkimage/
# Create kernel.img
./imagetool-uncompressed.py ../../linux/arch/arm/boot/Image
cp kernel.img /media/bwilson/8B12-9112/
sudo rm -rf /media/bwilson/29b6c2f5-5469-49f2-abd5-daa9149021cc/lib/modules/
sudo rm -rf /media/bwilson/29b6c2f5-5469-49f2-abd5-daa9149021cc/lib/firmware/
sudo cp -a lib/modules/ /media/bwilson/29b6c2f5-5469-49f2-abd5-daa9149021cc/lib
sudo cp -a lib/firmware/ /media/bwilson/29b6c2f5-5469-49f2-abd5-daa9149021cc/lib

Zoom zoom away we go. Put SD card in Pi. Connect monitor and boot. Worked on first try for me! Fabulous.