ARM64: Add support for aarch64 architecture

Added support for arm64 architecture so that yardstick framework
can be ran on arm-pod1 the armband CI pod. The modifications include
testing for presence of arm64 architecture nodes in the pod and running
arm64 specific code (building yardstick server image on arm64 version of
ubuntu cloud.
Openstack doesn't boot 3.13 kernel(arm64) so it was replaced with 3.19
kernel(also arm64), available for vivid cloud image of ubuntu.
The Dockerfile for building the ci image was also mofied to add necessary
tools for cross-building an arm64 image on amd64 host (the jumpserver)
The jira case for this commit is ARMBAND-40.

Change-Id: I906d4adbcf2ec2c0f1d695d9916ede42f4151080
Signed-off-by: Paul Vaduva <Paul.Vaduva@enea.com>
(cherry picked from commit 3790f7bb070078da4b101ad8d33a176c9096e3ba)

1 files changed, 39 insertions, 8 deletions

diff --git a/tools/yardstick-img-modify b/tools/yardstick-img-modify
index 13d4360d9..b9ecbddd8 100755
--- a/tools/yardstick-img-modify
+++ b/tools/yardstick-img-modify
@@ -38,11 +38,10 @@ test $(id -u) -eq 0 || die "should invoke using sudo"
 cmd=$1
 test -x $cmd
 mountdir="/mnt/yardstick"
-
 workspace=${WORKSPACE:-"/tmp/workspace/yardstick"}
 host=${HOST:-"cloud-images.ubuntu.com"}
 release=${RELEASE:-"trusty"}
-image_path="${release}/current/${release}-server-cloudimg-amd64-disk1.img"
+image_path="${release}/current/${release}-server-cloudimg-${YARD_IMG_ARCH}-disk1.img"
 image_url=${IMAGE_URL:-"https://${host}/${image_path}"}
 md5sums_path="${release}/current/MD5SUMS"
 md5sums_url=${MD5SUMS_URL:-"https://${host}/${md5sums_path}"}
@@ -64,30 +63,61 @@ download() {
         wget -nc --progress=dot:giga $image_url
         grep $filename MD5SUMS | md5sum -c
     fi
+
+    for i in $(seq 0 9); do
+        [ -a /dev/loop$i ] || mknod -m 660 /dev/loop$i b 7 $i
+    done
+
+    if [ $YARD_IMG_ARCH = "arm64" ]; then
+        cd /tmp
+        if [ ! -f /tmp/vivid-server-cloudimg-arm64-kernel-info.txt ]; then
+            wget http://cloud-images.ubuntu.com/vivid/current/vivid-server-cloudimg-arm64-kernel-info.txt
+        fi
+        export VIVID_KERNEL_VERSION=$(cut -d$'\t' -f4 vivid-server-cloudimg-arm64-kernel-info.txt)
+        mkdir -p /tmp/vivid-modules
+        if [ ! -f "/tmp/vivid-server-cloudimg-arm64.tar.gz" ]; then
+            wget $VIVID_IMG_URL
+        fi
+        if [ ! -f "/tmp/vivid-server-cloudimg-arm64.img" ]; then
+            tar zxvf vivid-server-cloudimg-arm64.tar.gz vivid-server-cloudimg-arm64.img
+        fi
+        mkdir -p /mnt/vivid
+        mount /tmp/vivid-server-cloudimg-arm64.img /mnt/vivid
+        cp -r /mnt/vivid/lib/modules/$(echo $VIVID_KERNEL_VERSION | cut -d'-' -f3,4,5) /tmp/vivid-modules
+        umount /mnt/vivid
+        rm /tmp/vivid-server-cloudimg-arm64.img
+        cd $workspace
+    fi
     qemu-img convert $filename $raw_imgfile
     cd -
 }
 
 # mount image
 setup() {
+    # qemu-img resize $raw_imgfile +5GB
+    if [ $YARD_IMG_ARCH = "arm64" ]; then
+        echo -e "d\nn\np\n1\n\n\nw" | fdisk $raw_imgfile
+    fi
     mkdir -p $mountdir
 
-    for i in $(seq 0 9); do
-        [ -a /dev/loop$i ] || mknod -m 660 /dev/loop$i b 7 $i
-    done
-
     loopdevice=$(kpartx -l $raw_imgfile | head -1 | cut -f1 -d ' ')
 
     kpartx -av $raw_imgfile
-
+    if [ $YARD_IMG_ARCH = "arm64" ]; then
+        e2fsck -f /dev/mapper/$loopdevice
+        resize2fs /dev/mapper/$loopdevice
+    fi
     # for trouble shooting
     sleep 2
     dmsetup ls
     fdisk -l /dev/${loopdevice:0:5} || true
-
     mount /dev/mapper/$loopdevice $mountdir
     mount -t proc none $mountdir/proc
 
+    if [ $YARD_IMG_ARCH = "arm64" ]; then
+        cp -r /tmp/vivid-modules/$(echo $VIVID_KERNEL_VERSION | cut -d'-' -f3,4,5) "$mountdir/lib/modules"
+        cp $(which "qemu-aarch64-static") "$mountdir/usr/bin"
+    fi
     cp $cmd $mountdir/$(basename $cmd)
 }
 
@@ -120,6 +150,7 @@ cleanup() {
     # designed to be idempotent
     mount | grep $mountdir/proc && umount $mountdir/proc
     mount | grep $mountdir && umount $mountdir
+    mount | grep "/mnt/vivid" && umount "/mnt/vivid"
     if [ -f $raw_imgfile ]; then
         kpartx -dv $raw_imgfile || true
     fi