[Mellanox] Update SN5640 platform to run as chipless

device/mellanox/x86_64-nvidia_sn5640-r0/platform_wait

@@ -0,0 +1,26 @@
+#!/usr/bin/python3
+
+#
+# Copyright (c) 2023-2025 NVIDIA CORPORATION & AFFILIATES.
+# Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+import sys
+from sonic_platform.device_data import DeviceDataManager
+from sonic_py_common.logger import Logger
+
+logger = Logger(log_identifier='platform_wait')
+logger.log_notice('Nvidia: Set True for PMON dependencies ready')
+sys.exit(0)

device/mellanox/x86_64-nvidia_sn5640-r0/pmon_daemon_control.json

@@ -1,6 +1,6 @@
 {
     "skip_ledd": true,
     "skip_fancontrol": true,
-    "skip_xcvrd_cmis_mgr": true
+    "skip_xcvrd": true
 }
 

files/build_templates/init_cfg.json.j2

@@ -64,10 +64,10 @@
 {%- set features = [("bgp", "{% if not DEVICE_RUNTIME_METADATA['ETHERNET_PORTS_PRESENT'] or ('CHASSIS_METADATA' in DEVICE_RUNTIME_METADATA and DEVICE_RUNTIME_METADATA['CHASSIS_METADATA']['module_type'] in ['supervisor']) %}disabled{% else %}enabled{% endif %}", false, "enabled"),
                    ("database", "always_enabled", false, "always_enabled"),
                    ("lldp", "enabled", true, "enabled"),
-                   ("pmon", "enabled", "{% if 'type' in DEVICE_METADATA['localhost'] and DEVICE_METADATA['localhost']['type'] == 'SpineRouter' %}False{% else %}True{% endif %}", "enabled"),
+                   ("pmon", "enabled", false, "enabled"),
                    ("snmp", "enabled", true, "enabled"),
-                   ("swss", "enabled", false, "enabled"),
-                   ("syncd", "enabled", false, "enabled")] %}
+                   ("swss", "disabled", false, "disabled"),
+                   ("syncd", "disabled", false, "disabled")] %}
 {%- if include_router_advertiser == "y" %}{% do features.append(("radv", "enabled", false, "enabled")) %}{% endif %}
 {%- if include_teamd == "y" %}{% do features.append(("teamd", "{% if not DEVICE_RUNTIME_METADATA['ETHERNET_PORTS_PRESENT'] %}disabled{% else %}enabled{% endif %}", false, "enabled")) %}{% endif %}
 {% do features.append(("dhcp_relay", "{% if not (DEVICE_METADATA is defined and DEVICE_METADATA['localhost'] is defined and DEVICE_METADATA['localhost']['type'] is defined and DEVICE_METADATA['localhost']['type'] is not in ['ToRRouter', 'EPMS', 'MgmtTsToR', 'MgmtToRRouter', 'BmcMgmtToRRouter']) %}enabled{% else %}disabled{% endif %}", false, "enabled")) %}

files/build_templates/pmon.service.j2

@@ -3,7 +3,7 @@ Description=Platform monitor container
 Requires=database.service config-setup.service
 After=database.service config-setup.service
 {% if sonic_asic_platform == 'mellanox' %}
-After=syncd.service
+#After=syncd.service
 {% endif %}
 BindsTo=sonic.target
 After=sonic.target