doc: add user guide for zephyr uos

Signed-off-by: Naveen Saini <naveen.kumar.saini@intel.com>

docs/getting-started-zephyr.md

@@ -0,0 +1,111 @@
+Getting Started
+---------------
+
+Build acrn sos image having zephyr uos.
+
+Dependencies
+------------
+
+This layer depends on:
+
+| meta layer        | git repository                                 |
+|-------------------|------------------------------------------------|
+| poky              | https://git.yoctoproject.org/git/poky          |
+| meta-intel        | https://git.yoctoproject.org/git/meta-intel    |
+| meta-acrnl        | https://github.com/intel/meta-acrn.git         |
+| meta-zephyr       | https://git.yoctoproject.org/git/meta-zephyr   |
+
+
+
+Configuration
+-------------
+
+############################################################################################
+
+Append below configuration to local.conf as follows:
+
+```
+MACHINE = "intel-corei7-64"
+TMPDIR = "${TOPDIR}/master-acrn-sos"
+DISTRO = "acrn-demo-sos"
+PREFERRED_PROVIDER_virtual/kernel = "linux-intel-acrn-sos"
+
+# Also use the 'uos' & 'zephyr' configuration
+BBMULTICONFIG = "uos zephyr"
+
+# The packages-from-images class (container-package.bbclass) needs to know where images are
+CONTAINER_PACKAGE_DEPLOY_DIR = "${TOPDIR}/master-acrn-uos/deploy/images/${MACHINE}"
+CONTAINER_PACKAGE_ZEPHYR_DEPLOY_DIR = "${TOPDIR}/master-zephyr-app/deploy/images/acrn"
+CONTAINER_PACKAGE_MC = "uos"
+
+# Zephyr application to be build & run
+ZEPHYR_APP = "zephyr-helloworld"
+
+# Add zephyr-image-base-package to acrn-image-base
+IMAGE_INSTALL_append_pn-acrn-image-base = " zephyr-image-package"
+```
+############################################################################################
+
+Configure `conf/multiconfig/uos.conf` as follows:
+
+```
+DISTRO="acrn-demo-uos"
+TMPDIR = "${TOPDIR}/master-acrn-uos"
+PREFERRED_PROVIDER_virtual/kernel = "linux-intel-acrn-uos"
+```
+############################################################################################
+
+Configure `conf/multiconfig/zephyr.conf` as follows:
+
+```
+MACHINE= "acrn"
+DISTRO = "zephyr"
+TMPDIR="${TOPDIR}/master-zephyr-app"
+```
+############################################################################################
+
+Note: Remember to keep TMPDIR in sync.
+
+
+Build
+-----
+
+
+Execute below commands sequentially in order to build the sos image shipped with zephyr uos:
+
+
+```
+$ bitbake mc:zephyr:zephyr-helloworld
+```
+This should build you a `*.elf` in the master-zephyr-app image directory.
+Now prepare zephyr image with grub-efi:
+
+
+```
+$ bitbake mc:uos:zephyr-image
+```
+This should build you a `zephyr.img` in the uosp image directory. Time to build your acrn image:
+
+
+```
+$ bitbake acrn-image-base
+```
+
+Building `acrn-image-base` will build a `wic.acrn` image that on first boot will be normal Linux
+but will setup EFI entries so that subsequent boots are inside ACRN. Alternatively use the EFI
+shell, assuming you've got the image on a USB stick something like this works:
+
+```
+> fs1:
+> \EFI\BOOT\acrn.efi
+```
+
+Run zephyr uos
+--------------
+```
+ $/var/lib/machines/launch_zephyr.sh
+```
+
+
+
+