Raspberry Pi, GPU userland apps and camera tools
This section describes how you run install Plop Linux on the Raspberry Pi, how you cross compile the Linux Kernel for the Raspberry Pi and how you compile/install some Raspberry Pi related tools.
Linux Kernel version: 4.1.13
Install Plop Linux
Plop Linux is for advanced Linux users. The install documentation does not describe every step with commands. When it's too difficult for people then I will update this page with more details.
Boot a Linux on a computer with a SD card reader.
• On the SD Card, create partition 1 with about 60 MB. Partition type: 0x0C (FAT partition). This will be the boot partition
• On the SD Card, create partition 2 for Plop Linux. Minimum size is 3.1 GB.
• Create a FAT file system on the first partition 'mkfs.vfat -F 32 /dev/PARTITION1' (the boot partition).
• Create an Ext3 file system on the second partition 'mkfs.ext3 /dev/PARTITION2' (the Plop Linux partition).
• Mount the second Partition (Plop Linux partition) to '/mnt'.
• Extract the ploplinux-desktop-4.3.5-arm.tar.gz archive to '/mnt'.
• Move the directories in '/mnt/ploplinux-desktop-4.3.5-arm/' one directory up that they became the root directories on the Plop Linux partition.
• Remove the empty '/mnt/ploplinux-desktop-4.3.5-arm/' directory.
• Mount the first partition (boot partition) to '/mnt/boot'.
• A few important files (the default settings should be ok):
• Unmount '/mnt/boot'.
• Unmount '/mnt'.
Compile the Linux Kernel
Either compile the Linux Kernel on your Raspberry Pi (slow) or you have to setup a cross compile environment (see here) on your computer.
• When you use the cross compile environment, then start the 'shell.sh' script.
• Download the Linux Kernel Source Code for Raspberry Pi and extract it.
• Change to the Linux Kernel directory 'cd linux' and setup base configuration
• To compile the kernel run 'make && make modules_install'
Note: 'make modules_install' installs the kernel modules. When you compile on the Raspberry Pi then the modules will be installed to '/lib/modules'. When you compile in the cross compile environment then you find the modules in the 'kernel-modules/' directory where you started the 'shell.sh' script.
• You find the Linux Kernel file in the 'arch/arm/boot/' directory. The file name is 'zImage'. Rename it to 'kernel.img'.
• Copy the 'kernel.img' file to the boot partition of your Raspberry Pi.
Note: When you compile in a cross compile environment, then an easy way to transfer the files
to your running Raspberry Pi is using sshfs.
GPU userland apps and camera tools
Compile the tools on your Raspberry Pi or in a cross compile environment.
To compile and install the GPU userland and the Python camera modules at once run the script '000_all'.
The build scripts are
010_b_setuptools: Install the Python setup tools
020_b_picamera: Install the Python Raspberry Pi Camera modules
030_b_userland: Compile, patch and install the GPU userland apps (raspistill, raspivid, raspiyuv, ...)
Finally copy the file '.bash_RaspberryPI' to your home directory and add the line
to the end of your '.bash_profile' file.
This script adds environment variables for the userland apps. Log out and log in to activate the environment variables.
000_src/userland-plop.patch: Patch the userland to fix the vcos.h problems. It also creates a new build script.
001_git-userland: Get the latest GPU userland source code.
© 2018 by Elmar Hanlhofer