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, 45 insertions, 0 deletions

diff --git a/distribution/yocto-example-layer/sdcard.tex b/distribution/yocto-example-layer/sdcard.tex
new file mode 100644
index 0000000..01ac667
--- /dev/null
+++ b/distribution/yocto-example-layer/sdcard.tex
@@ -0,0 +1,45 @@
+\subsection{Creating SDCard images}
+
+\begin{frame}[fragile]
+\frametitle{using wic}
+\begin{lstlisting}
+$ cd ~/poky/meta-schulung
+$ mkdir -p scripts/lib/wic/canned-wks
+$ pluma scripts/lib/wic/canned-wks/core-image-schulung.vexpress.wks
+\end{lstlisting}
+\begin{verbatim}
+part / --source rootfs --fstype=ext2 --label rootfs \
+               --ondisk mmc --align 1024 --use-uuid
+\end{verbatim}
+\begin{lstlisting}
+$ 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"
+IMAGE_FSTYPES = "wic"
+\end{verbatim}
+\begin{lstlisting}
+$ cd ~/poky/build-schulung
+$ bitbake core-image-schulung
+\end{lstlisting}
+\end{frame}
+
+\begin{frame}[fragile]
+\frametitle{Run SDCard Image in qemu}
+\begin{lstlisting}
+$ cd ~/poky/build-schulung
+$ ./tmp/sysroots-components/x86_64/qemu-native/usr/bin/qemu-system-arm \
+    -M vexpress-a9 -nographic \
+    -net nic -net user,hostfwd=tcp::1534-:1534,hostfwd=tcp::2345-:2345 \
+    -drive if=sd,format=raw,\
+file=tmp/deploy/images/vexpress/core-image-schulung-vexpress.wic
+    -dtb    tmp/deploy/images/vexpress/vexpress-v2p-ca9.dtb \
+    -kernel tmp/deploy/images/vexpress/zImage \
+    -append \
+"console=ttyAMA0,115200 root=/dev/mmcblk0p1 rw ip=dhcp init=/bin/example"
+\end{lstlisting}
+Qemu can be quit by pressing 'ctrl-a x'
+\end{frame}