OpenOCDDriver: disable default server ports

doc/configuration.rst

@@ -2318,6 +2318,12 @@ OpenOCDDriver
 An :any:`OpenOCDDriver` controls *OpenOCD* to bootstrap a target with a
 bootloader.
 
+The driver disables OpenOCD's GDB, telnet and TCL server ports. It does not
+provide a lifecycle to expose or stop these server interfaces, and disabling
+them allows multiple bootstrap operations to run concurrently on one exporter.
+Configurations which require a server interface can re-enable it with an
+appropriate command before ``init``.
+
 Note that OpenOCD supports specifying USB paths since
 `a1b308ab <https://sourceforge.net/p/openocd/code/ci/a1b308ab/>`_ which was released with v0.11.
 The OpenOCDDriver passes the resource's USB path.

labgrid/driver/openocddriver.py

@@ -55,6 +55,14 @@ def _run_commands(self, commands: list):
         cmd = [self.tool]
         cmd += chain.from_iterable(("--search", path) for path in self.search)
         cmd += self._get_usb_path_cmd()
+        cmd += [
+            "--command",
+            "gdb_port disabled",
+            "--command",
+            "telnet_port disabled",
+            "--command",
+            "tcl_port disabled",
+        ]
 
         managed_configs = []
         for config in self.config: