update

device/celestica/x86_64-cel_silverstone_v2-r0/pddf/pddf-device.json-bmc

@@ -7,6 +7,7 @@
     "num_ports": 34,
     "num_temps": 14,
     "num_component": 10,
+    "bmc_present": "True",
     "pddf_dev_types":
     {
         "description":" - Below is the list of supported PDDF device types (chip names) for various components. If any component uses some other driver, we will create the client using 'echo <dev-address> <dev-type> > <path>/new_device' method",

device/celestica/x86_64-cel_silverstone_v2-r0/pddf/pddf-device.json-nonebmc

@@ -7,6 +7,7 @@
     "num_ports": 34,
     "num_temps": 6,
     "num_component": 8,
+    "bmc_present": "False",
     "pddf_dev_types":
     {
         "description":" - Below is the list of supported PDDF device types (chip names) for various components. If any component uses some other driver, we will create the client using 'echo <dev-address> <dev-type> > <path>/new_device' method",

platform/broadcom/sonic-platform-modules-cel/silverstone-v2/pddf/sonic_platform/helper.py

@@ -4,6 +4,7 @@
 # @Mail    : yajiang@celestica.com
 # @Author  : jiang tao
 import os
+import json
 import struct
 import subprocess
 from sonic_py_common import device_info
@@ -144,8 +145,15 @@ def ipmi_set_ss_thres(id, threshold_key, value):
         except Exception:
             status = False
         return status, result
-
-    def get_bmc_status(self):
-        bmc_present_path = r"/host/bmc_present"
-        bmc_status = self.read_txt_file(bmc_present_path)
-        return True if bmc_status == "True" else False
+
+    @staticmethod
+    def get_bmc_status():
+        """
+        get bmc present by pddf-device.json
+        return: True(present), False(absent)
+        """
+        pddf_device_path = '/usr/share/sonic/platform/pddf/pddf-device.json'
+        with open(pddf_device_path) as f:
+            json_data = json.load(f)
+        bmc_present = json_data["PLATFORM"]["bmc_present"]
+        return True if bmc_present == "True" else False

platform/broadcom/sonic-platform-modules-cel/silverstone-v2/scripts/pre_pddf_init.py

@@ -61,14 +61,13 @@ def uninstall_lpc_basecpld(self):
 
     def get_bmc_status(self):
         """
-        get bmc status and save bmc status to '/usr/local/bin/bmc_present'
+        get bmc status
         """
         self.install_lpc_basecpld()
         if os.path.exists(self.bmc_exist_cmd):
             # "1": "absent", "0": "present"
             sta, res = self.run_command("cat %s" % self.bmc_exist_cmd)
             self.bmc_present = True if res == "0" else False
-        self.run_command("echo '%s' > /host/bmc_present" % self.bmc_present)
         self.uninstall_lpc_basecpld()
 
     def choose_pddf_device_json(self):