[v8,5/7] oeqa: support passing custom boot patterns to runqemu

diff --git a/meta/lib/oeqa/targetcontrol.py b/meta/lib/oeqa/targetcontrol.py
index 6e8b781973..cdf382ee21 100644
--- a/meta/lib/oeqa/targetcontrol.py
+++ b/meta/lib/oeqa/targetcontrol.py
@@ -88,7 +88,7 @@  class QemuTarget(BaseTarget):
 
     supported_image_fstypes = ['ext3', 'ext4', 'cpio.gz', 'wic']
 
-    def __init__(self, d, logger, image_fstype=None):
+    def __init__(self, d, logger, image_fstype=None, boot_patterns=None):
 
         import oe.types
 
@@ -141,7 +141,8 @@  class QemuTarget(BaseTarget):
                             dump_dir = dump_dir,
                             logger = logger,
                             tmpfsdir = d.getVar("RUNQEMU_TMPFS_DIR"),
-                            serial_ports = len(d.getVar("SERIAL_CONSOLES").split()))
+                            serial_ports = len(d.getVar("SERIAL_CONSOLES").split()),
+                            boot_patterns = boot_patterns)
 
         self.monitor_dumper = MonitorDumper(dump_monitor_cmds, dump_dir, self.runner)
         if (self.monitor_dumper):
diff --git a/meta/lib/oeqa/utils/commands.py b/meta/lib/oeqa/utils/commands.py
index bf2f49d0c0..ca22d69f29 100644
--- a/meta/lib/oeqa/utils/commands.py
+++ b/meta/lib/oeqa/utils/commands.py
@@ -312,7 +312,7 @@  def create_temp_layer(templayerdir, templayername, priority=999, recipepathspec=
         f.write('LAYERSERIES_COMPAT_%s = "%s"\n' % (templayername, corenames))
 
 @contextlib.contextmanager
-def runqemu(pn, ssh=True, runqemuparams='', image_fstype=None, launch_cmd=None, qemuparams=None, overrides={}, discard_writes=True):
+def runqemu(pn, ssh=True, runqemuparams='', image_fstype=None, launch_cmd=None, qemuparams=None, overrides={}, boot_patterns = {}, discard_writes=True):
     """
     Starts a context manager for a 'oeqa.targetcontrol.QemuTarget' resource.
     The underlying Qemu will be booted into a shell when the generator yields
@@ -330,6 +330,7 @@  def runqemu(pn, ssh=True, runqemuparams='', image_fstype=None, launch_cmd=None,
         image_fstype (str): IMAGE_FSTYPE to use
         launch_cmd (str): directly run this command and bypass automatic runqemu parameter generation
         overrides (dict): dict of "'<bitbake-variable>': value" pairs that allows overriding bitbake variables
+        boot_patterns (dict): dict of "'<pattern-name>': value" pairs to override default boot patterns, e.g. when not booting Linux
         discard_writes (boolean): enables qemu -snapshot feature to prevent modifying original image
     """
 
@@ -361,7 +362,7 @@  def runqemu(pn, ssh=True, runqemuparams='', image_fstype=None, launch_cmd=None,
 
         logdir = recipedata.getVar("TEST_LOG_DIR")
 
-        qemu = oeqa.targetcontrol.QemuTarget(recipedata, targetlogger, image_fstype)
+        qemu = oeqa.targetcontrol.QemuTarget(recipedata, targetlogger, image_fstype, boot_patterns=boot_patterns)
     finally:
         # We need to shut down tinfoil early here in case we actually want
         # to run tinfoil-using utilities with the running QEMU instance.
diff --git a/meta/lib/oeqa/utils/qemurunner.py b/meta/lib/oeqa/utils/qemurunner.py
index 63fc6f6b53..5c3a8e5999 100644
--- a/meta/lib/oeqa/utils/qemurunner.py
+++ b/meta/lib/oeqa/utils/qemurunner.py
@@ -103,7 +103,7 @@  class QemuRunner:
 
         # Only override patterns that were set e.g. login user TESTIMAGE_BOOT_PATTERNS[send_login_user] = "webserver\n"
         for pattern in accepted_patterns:
-            if not self.boot_patterns[pattern]:
+            if pattern not in self.boot_patterns or not self.boot_patterns[pattern]:
                 self.boot_patterns[pattern] = default_boot_patterns[pattern]
 
     def create_socket(self):