The cross development tools
- Overview of an embedded system and of the Linux kernel architecture.
- Cross development tool chain, gcc cross compiler, C libraries, glibc and uClibc, GNU debugger, GNU ELF tools.
- Embedded development tools, QEMU, Buildroot, Busybox and Scratchbox
The universal Boot loader: uBoot
- uBoot project overview. A walk through the source code. Supported architectures.
Basic functionalities.
- The uImage format for booting uBoot Images.
- Configuration, compilation and installation in a QEMU sandbox for testing.
- Development of a standalone program using uBoot as BIOS.
- uBoot BSP. Adding a new SOC and a new board in the uBoot BSP tree.
Hands-on work
Add a new command to uBoot and test uBoot inside QEMU, generate a new BSP for uBoot and develop a simple stand alone program using uBoot as BIOS.
Linux kernel
- Licenses implications and kernel modules development. Development cycles.
- Kernel development tools, quilt, GDB, GIT, LTT. Configuration tool Kbuild.
- The Linux boot process.
- Devices drivers. The Linux driver framework and standard drivers.
- The Linux BSP. Adding a new board to Linux.
- Specific embedded systems drivers MTD drivers, CAN, SPI and I2C drivers.
Hands-on work
Modify the kernel tree to add a new driver to the kernel tree and generate a patch formatted for the LKML. Develop a character driver outside of the kernel tree.
Root File system
- Creation of a rootfs. A tiny root file system, back to UNIX fundamentals and the init program.
- Manage users on an embedded system with busybox.
- Dynamic libraries or static programs. Choosing a root file system architecture.
- Building a rootfs as CPIO or as EXT2 file system.
- Creating JFFS2, UBIFS or YAFFS file systems.
Hands-on work
Create rootfs from scratch using busybox and test it on a real ARM target.Use buildroot to add new applications.Add your own application developed using SCRATCHBOX.Test the buildroot generated rootfs.
Limits of Linux Embedded
- Industrial realtime application.
- Power management.
- Embedded interfaces.
- Complete embedded framework.
- Debugging. Using QEMU to debug and embedded system.
Hands-on work
You will modify the Linux boot-logo using standard Linux graphical tools. Test a hard realtime solution. Debug an application on the ARM target.
5d
- 35h00 
