[platform]: fixed syseeprom access for BFN platform (sonic-net#3216)

Signed-off-by: Andriy Kokhan <akokhan@barefootnetworks.com>

Author: akokhan

device/barefoot/x86_64-accton_wedge100bf_32x-r0/plugins/eeprom.py

@@ -0,0 +1,145 @@
+#!/usr/bin/python
+
+
+try:
+    import importlib
+    import time
+    import os
+    import re
+    import sys
+    import errno
+    import datetime
+
+    sys.path.append(os.path.dirname(__file__))
+    import pltfm_mgr_rpc
+    from pltfm_mgr_rpc.ttypes import *
+
+    from thrift.transport import TSocket
+    from thrift.transport import TTransport
+    from thrift.protocol import TBinaryProtocol
+    from thrift.protocol import TMultiplexedProtocol
+
+    from argparse import ArgumentParser
+    from cStringIO import StringIO
+    from sonic_eeprom import eeprom_base
+    from sonic_eeprom import eeprom_tlvinfo
+except ImportError, e:
+    raise ImportError (str(e) + "- required module not found")
+
+
+eeprom_default_dict = {
+	"prod_name"         : ("Product Name",                "0x21", 12),
+	"odm_pcba_part_num" : ("Part Number",                 "0x22", 13),
+	"prod_ser_num"      : ("Serial Number",               "0x23", 12),
+	"ext_mac_addr"      : ("Extended MAC Address Base",   "0x24", 12),
+	"sys_mfg_date"      : ("System Manufacturing Date",   "0x25",  4),
+	"prod_ver"          : ("Product Version",             "0x26",  1),
+	"ext_mac_addr_size" : ("Extende MAC Address Size",    "0x2A",  2),
+	"sys_mfger"         : ("Manufacturer",                "0x2B",  8)
+}
+
+eeprom_dict = { "version"           : ("Version",                     None,    0),
+		"pcb_mfger"         : ("PCB Manufacturer",            "0x01",  8),
+		"prod_ser_num"      : ("Serial Number",               "0x23", 12),
+		"bfn_pcba_part_num" : ("Switch PCBA Part Number",     "0x02", 12),
+		"odm_pcba_part_num" : ("Part Number",                 "0x22", 13),
+		"bfn_pcbb_part_num" : ("Switch PCBB Part Number",     "0x04", 12),
+		"sys_asm_part_num"  : ("System Assembly Part Number", "0x05", 12),
+		"prod_state"        : ("Product Production State",    "0x06",  1),
+		"location"          : ("EEPROM Location of Fabric",   "0x07",  8),
+		"ext_mac_addr_size" : ("Extende MAC Address Size",    "0x08",  2),
+		"sys_mfg_date"      : ("System Manufacturing Date",   "0x25",  4),
+		"prod_name"         : ("Product Name",                "0x21", 12),
+		"prod_ver"          : ("Product Version",             "0x26",  1),
+		"prod_part_num"     : ("Product Part Number",         "0x09",  8),
+		"sys_mfger"         : ("Manufacturer",                "0x2B",  8),
+		"assembled_at"      : ("Assembled at",                "0x08",  8),
+		"prod_ast_tag"      : ("Product Asset Tag",           "0x09", 12),
+		"loc_mac_addr"      : ("Local MAC address",           "0x0A", 12),
+		"odm_pcba_ser_num"  : ("ODM PBCA Serial Number",      "0x0B", 12),
+		"ext_mac_addr"      : ("Extended MAC Address Base",   "0x0C", 12),
+		"prod_sub_ver"      : ("Product Sub Version",         "0x0D",  1)
+              }
+
+product_dict = { "Montara"   : "Wedge100BF-32X-O-AC-F-BF",
+                 "Lower MAV" : "Wedge100BF-65X-O-AC-F-BF",
+                 "Upper MAV" : "Wedge100BF-65X-O-AC-F-BF"
+               }
+
+thrift_server = 'localhost'
+transport = None
+pltfm_mgr = None
+
+EEPROM_SYMLINK = "/var/run/platform/eeprom/syseeprom"
+
+
+class board(eeprom_tlvinfo.TlvInfoDecoder):
+
+    def __init__(self, name, path, cpld_root, ro):
+
+        if not os.path.exists(os.path.dirname(EEPROM_SYMLINK)):
+            try:
+                os.makedirs(os.path.dirname(EEPROM_SYMLINK))
+            except OSError as e:
+                if e.errno != errno.EEXIST:
+                    raise
+
+        open(EEPROM_SYMLINK, 'a').close()
+
+        self.eeprom_path = EEPROM_SYMLINK
+        super(board, self).__init__(self.eeprom_path, 0, '', True)
+        self.eeprom_init()
+
+    def thrift_setup(self):
+        global thrift_server, transport, pltfm_mgr
+        transport = TSocket.TSocket(thrift_server, 9090)
+
+        transport = TTransport.TBufferedTransport(transport)
+        bprotocol = TBinaryProtocol.TBinaryProtocol(transport)
+
+        pltfm_mgr_client_module = importlib.import_module(".".join(["pltfm_mgr_rpc", "pltfm_mgr_rpc"]))
+        pltfm_mgr_protocol = TMultiplexedProtocol.TMultiplexedProtocol(bprotocol, "pltfm_mgr_rpc")
+        pltfm_mgr = pltfm_mgr_client_module.Client(pltfm_mgr_protocol)
+
+        transport.open()
+
+    def thrift_teardown(self):
+        global transport
+        transport.close()
+
+    def eeprom_init(self):
+        global pltfm_mgr
+        self.thrift_setup()
+        eeprom = pltfm_mgr.pltfm_mgr_sys_eeprom_get()
+        self.thrift_teardown()
+
+        eeprom_params = ""
+        for attr, val in eeprom.__dict__.iteritems():
+            if val is None:
+                continue
+
+            elem = eeprom_default_dict.get(attr)
+            if elem is None:
+                continue
+
+            if isinstance(val, basestring):
+                value = val.replace('\0', '')
+            else:
+                value = str(val)
+
+            if attr == "sys_mfg_date":
+                value = datetime.datetime.strptime(value, '%m-%d-%y').strftime('%m/%d/%Y 00:00:00')
+
+            product = product_dict.get(value)
+            if product is not None:
+                value = product
+            if len(eeprom_params) > 0:
+                eeprom_params += ","
+            eeprom_params += "{0:s}={1:s}".format(elem[1], value)
+
+        orig_stdout = sys.stdout
+        sys.stdout = StringIO()
+        new_e = eeprom_tlvinfo.TlvInfoDecoder.set_eeprom(self, "", [eeprom_params])
+        sys.stdout = orig_stdout
+        eeprom_base.EepromDecoder.write_eeprom(self, new_e)
+

device/barefoot/x86_64-accton_wedge100bf_32x-r0/plugins/pltfm_mgr_rpc/__init__.py

@@ -0,0 +1 @@
+__all__ = ['ttypes', 'constants', 'pltfm_mgr_rpc']