scripts: runners: nrfutil: Add a new external memory config param

This acts in a similar way to nrfjprog's --qspiini parameter introduced
in 7eb364b, but works slightly differently in nrfutil: it requires a
config file in JSON format instead of .ini, and it is passed along to
the `execute-batch` command instead of providing it together with the
`program` command.

Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>

Author: carlescufi

scripts/west_commands/runners/nrfutil.py

@@ -18,12 +18,13 @@ class NrfUtilBinaryRunner(NrfBinaryRunner):
 
     def __init__(self, cfg, family, softreset, pinreset, dev_id, erase=False,
                  reset=True, tool_opt=None, force=False, recover=False,
-                 suit_starter=False):
+                 suit_starter=False, ext_mem_config_file=None):
 
         super().__init__(cfg, family, softreset, pinreset, dev_id, erase, reset,
                          tool_opt, force, recover)
 
         self.suit_starter = suit_starter
+        self.ext_mem_config_file = ext_mem_config_file
 
         self._ops = []
         self._op_id = 1
@@ -43,14 +44,19 @@ def do_create(cls, cfg, args):
                                    reset=args.reset,
                                    tool_opt=args.tool_opt, force=args.force,
                                    recover=args.recover,
-                                   suit_starter=args.suit_manifest_starter)
+                                   suit_starter=args.suit_manifest_starter,
+                                   ext_mem_config_file=args.ext_mem_config_file)
 
     @classmethod
     def do_add_parser(cls, parser):
         super().do_add_parser(parser)
         parser.add_argument('--suit-manifest-starter', required=False,
                             action='store_true',
                             help='Use the SUIT manifest starter file')
+        parser.add_argument('--ext-mem-config-file', required=False,
+                            dest='ext_mem_config_file',
+                            help='path to an JSON file with external memory configuration')
+
 
     def _exec(self, args):
         jout_all = []
@@ -139,8 +145,13 @@ def _exec_batch(self):
         self._ops = []
         self._op_id = 1
         self.logger.debug(f'Executing batch in: {json_file}')
-        self._exec(['x-execute-batch', '--batch-path', f'{json_file}',
-                    '--serial-number', f'{self.dev_id}'])
+        precmd = []
+        if self.ext_mem_config_file:
+            # This needs to be prepended, as it's a global option
+            precmd = ['--x-ext-mem-config-file', self.ext_mem_config_file]
+
+        self._exec(precmd + ['x-execute-batch', '--batch-path', f'{json_file}',
+                             '--serial-number', f'{self.dev_id}'])
 
     def do_exec_op(self, op, force=False):
         self.logger.debug(f'Executing op: {op}')