driver/bareboxdriver.py: Add parameter 'boot_command'

To adapt the BareboxDriver and be consistent with the
UBootDriver, the parameter 'boot_command' is added.
Now you can do something like this:

targets:
  main:
    drivers:
      BareboxDriver:
        boot_command: "boot net"

Signed-off-by: Fabian Meuren <[email protected]>

Author: meuren

labgrid/driver/bareboxdriver.py

@@ -29,6 +29,7 @@ class BareboxDriver(CommandMixin, Driver, CommandProtocol, LinuxBootProtocol):
         interrupt (str): optional, string to interrupt autoboot (use "\x03" for CTRL-C)
         bootstring (regex): optional, regex indicating that the Linux Kernel is booting
         password (str): optional, password to use for access to the shell
+        boot_command (str): optional boot command to boot target
         login_timeout (int): optional, timeout for access to the shell
     """
     bindings = {"console": ConsoleProtocol, }
@@ -37,6 +38,7 @@ class BareboxDriver(CommandMixin, Driver, CommandProtocol, LinuxBootProtocol):
     interrupt = attr.ib(default="\n", validator=attr.validators.instance_of(str))
     bootstring = attr.ib(default=r"Linux version \d", validator=attr.validators.instance_of(str))
     password = attr.ib(default="", validator=attr.validators.instance_of(str))
+    boot_command = attr.ib(default="boot -v", validator=attr.validators.instance_of(str))
     login_timeout = attr.ib(default=60, validator=attr.validators.instance_of(int))
 
     def __attrs_post_init__(self):
@@ -206,4 +208,4 @@ def boot(self, name: str):
         if name:
             self.console.sendline(f"boot -v {name}")
         else:
-            self.console.sendline("boot -v")
+            self.console.sendline(self.boot_command)