Automated hardware testing support for reference platforms

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+# Copyright (C) 2014 Intel Corporation
+#
+# Released under the MIT license (see COPYING.MIT)
+
+# This module adds support to testimage.bbclass to deploy images and run
+# tests on a Ubiquiti Networks EdgeRouter Lite. The device must be set up
+# to boot into the master image already - the easiest way to do that is as
+# follows:
+#
+# 1. Take out the internal USB drive and plug it into your PC
+# 2. Repartition the USB drive so that you have three partitions in this
+#    order:
+#      1: vfat, labelled "boot" (it will need to be formatted with mkfs.vfat
+#         for this to be possible, since FAT partitions formatted under
+#         DOS/Windows will only support uppercase labels)
+#      2: ext3 (for master image) labelled "testmaster"
+#      3: ext3 (for image under test) labelled "testrootfs"
+# 3. Copy the kernel to be used by the master image to the FAT partition
+#    (it should be named "vmlinux.64" with the factory u-boot configuration)
+# 4. Install the master image onto the "testmaster" ext3 partition. If
+#    you do this by just extracting the contents of an image onto the
+#    partition, you will also likely need to create the master image marker
+#    file /etc/masterimage within this partition so that we can tell when
+#    we're booted into it that it is the master image.
+# 5. Put the USB drive back into the device, and ensure the console port
+#    and first ethernet port are connected before powering on
+#
+# TEST_SERIALCONTROL_CMD will need to be set in local.conf so that we can
+# interact with u-boot over the serial console port.
+
+import os
+import bb
+import time
+import subprocess
+import sys
+import pexpect
+
+import oeqa.utils.sshcontrol as sshcontrol
+from oeqa.controllers.masterimage import MasterImageHardwareTarget
+
+
+class EdgeRouterTarget(MasterImageHardwareTarget):
+
+    def __init__(self, d):
+        super(EdgeRouterTarget, self).__init__(d)
+
+        self.deploy_cmds = [
+                'mount -L boot /boot',
+                'mkdir -p /mnt/testrootfs',
+                'mount -L testrootfs /mnt/testrootfs',
+                'cp ~/test-kernel /boot',
+                'rm -rf /mnt/testrootfs/*',
+                'tar xzvf ~/test-rootfs.tar.gz -C /mnt/testrootfs'
+                ]
+        if not self.serialcontrol_cmd:
+            bb.fatal("This TEST_TARGET needs a TEST_SERIALCONTROL_CMD defined in local.conf.")
+
+
+    def _deploy(self):
+        self.master.run("umount /mnt/testrootfs;")
+        self.master.ignore_status = False
+        self.master.copy_to(self.kernel, "~/test-kernel")
+        self.master.copy_to(self.rootfs, "~/test-rootfs.tar.gz")
+        for cmd in self.deploy_cmds:
+            self.master.run(cmd)
+
+    def _start(self, params=None):
+        self.power_cycle(self.master)
+        try:
+            serialconn = pexpect.spawn(self.serialcontrol_cmd, env=self.origenv, logfile=sys.stdout)
+            serialconn.expect("U-Boot")
+            serialconn.sendline("a")
+            serialconn.expect("Octeon ubnt_e100#")
+            serialconn.sendline("fatload usb 0:1 $loadaddr test-kernel")
+            serialconn.expect(" bytes read")
+            serialconn.expect("Octeon ubnt_e100#")
+            serialconn.sendline("bootoctlinux $loadaddr coremask=0x3 root=/dev/sda3 rw rootwait mtdparts=phys_mapped_flash:512k(boot0),512k(boot1),64k@3072k(eeprom)")
+            serialconn.expect("login:", timeout=120)
+            serialconn.close()
+        except pexpect.ExceptionPexpect as e:
+            bb.fatal('Serial interaction failed: %s' % str(e))
+
+    def _wait_until_booted(self):
+        try:
+            serialconn = pexpect.spawn(self.serialcontrol_cmd, env=self.origenv, logfile=sys.stdout)
+            serialconn.expect("login:", timeout=120)
+            serialconn.close()
+        except pexpect.ExceptionPexpect as e:
+            bb.fatal('Serial interaction failed: %s' % str(e))