1

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

2

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.

3

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.

4

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.

5

Limits of Linux Embedded

• Industrial realtime application.
• Power management.
• Embedded interfaces.
• Complete embedded framework.
• Debugging. Using QEMU to debug and embedded system.