add 'yocto-layer-example'

This is a first attemp to create a new slideset for day2 of yocto-trainig.

The slideset is based on 'yocto-advanced' but with integration of
'meta-schulung' explanations.

I used a slightly modified version of 'meta-schulung'. The following changes
are currently not available in git:

I don't use linux-yocto in meta-schulung, but use an own kernel-recipe and
integrate the RT-PREEMPT patch.

wic: i can't see the need for the second partition and the need for huge files
in the kconfig. It works for me by adding ' --align 1024 ' to the wic setup.
I decided to use ext2 instead of ext4.

I renamed the rootfs.bb file into schulung-base.bb

I use the u-boot recipe from poky. However i don't use u-boot for anything atm.
  But bootloader is on our agenda..

Signed-off-by: Manuel Traut <manut@linutronix.de>

1 files changed, 35 insertions, 0 deletions

diff --git a/distribution/yocto-example-layer/bootloader.tex b/distribution/yocto-example-layer/bootloader.tex
new file mode 100644
index 0000000..1a4c6a5
--- /dev/null
+++ b/distribution/yocto-example-layer/bootloader.tex
@@ -0,0 +1,35 @@
+\subsection{Bootloader}
+
+\begin{frame}[fragile]
+\frametitle{Configure and add u-boot}
+\begin{lstlisting}
+$ cd ~/poky/meta-schulung
+$ pluma conf/machine/vexpress.conf
+\end{lstlisting}
+\begin{verbatim}
+DEFAULTTUNE ?= "armv7athf-neon"
+require conf/machine/include/tune-cortexa8.inc
+SERIAL_CONSOLE = "115200 ttyAMA0"
+PREFERRED_PROVIDER_virtual/kernel = "linux-vanilla"
+UBOOT_MACHINE = "vexpress_ca9x4_defconfig"
+IMAGE_FSTYPES = "wic"
+\end{verbatim}
+\begin{lstlisting}
+$ pluma recipes-core/images/core-image-schulung.bb
+\end{lstlisting}
+\begin{verbatim}
+[..]
+CORE_IMAGE_BASE_INSTALL = " \
+ u-boot \
+ schulung-base \
+ kernel-modules \
+ example \
+ ${@bb.utils.contains('SCHULUNG_FEATURES', 'devel','${DEVPKGS}','',d)} \
+"
+[..]
+\end{verbatim}
+\begin{lstlisting}
+$ cd ~/poky/build-schulung
+$ bitbake core-image-schulung
+\end{lstlisting}
+\end{frame}