DM: VMcfg: mrb-env-setup.sh

Script that setup envriment on MRB platform, for UOS with build-in
configuration
For example, you need to run  mrb-env-setup.sh once, to
prepare images, networks and pci-stubs, etc,.

Tracked-On: #1528
Acked-by: Yin Fengwei <fengwei.yin@intel.com>
Signed-off-by: Tao Yuhong <yuhong.tao@intel.com>

devicemodel/vmcfg/apl-mrb/mrb-env-setup.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+
+if [ ! -b "/dev/mmcblk1p3" ]; then
+  echo "no /dev/mmcblk1p3 data partition, exit"
+  exit
+fi
+
+mkdir -p /data
+mount /dev/mmcblk1p3 /data
+
+if [ ! -f "/data/android/android.img" ]; then
+  echo "no /data/android/android.img, exit"
+  exit
+fi
+
+# create a unique tap device for each VM
+tap=tap_AaaG
+tap_exist=$(ip a | grep acrn_"$tap" | awk '{print $1}')
+if [ "$tap_exist"x != "x" ]; then
+  echo "tap device existed, reuse acrn_$tap"
+else
+  ip tuntap add dev acrn_$tap mode tap
+fi
+
+# if acrn-br0 exists, add VM's unique tap device under it
+br_exist=$(ip a | grep acrn-br0 | awk '{print $1}')
+if [ "$br_exist"x != "x" -a "$tap_exist"x = "x" ]; then
+  echo "acrn-br0 bridge aleady exists, adding new tap device to it..."
+  ip link set acrn_"$tap" master acrn-br0
+  ip link set dev acrn_"$tap" down
+  ip link set dev acrn_"$tap" up
+fi
+
+modprobe pci_stub
+
+# offline SOS CPUs except BSP before launch UOS
+for i in `ls -d /sys/devices/system/cpu/cpu[1-99]`; do
+	online=`cat $i/online`
+	idx=`echo $i | tr -cd "[1-99]"`
+	echo cpu$idx online=$online
+	if [ "$online" = "1" ]; then
+		echo 0 > $i/online
+		echo $idx > /sys/class/vhm/acrn_vhm/offline_cpu
+	fi
+done