[platform] Add as7512 sfp/eeprom utils (#531)

* Cavm platfrom modules insmod on start

Signed-off-by: Nadiya.Stetskovych <Nadiya.Stetskovych@cavium.com>

* Add as77512 platform utils

Signed-off-by: Nadiya.Stetskovych <Nadiya.Stetskovych@cavium.com>

* Move platform related init to platform modules

Signed-off-by: Nadiya.Stetskovych <Nadiya.Stetskovych@cavium.com>

device/accton/x86_64-accton_as7512_32x-r0/plugins/eeprom.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+
+#############################################################################
+# Cavium
+#
+# Platform and model specific eeprom subclass, inherits from the base class,
+# and provides the followings:
+# - the eeprom format definition
+# - specific encoder/decoder if there is special need
+#############################################################################
+
+try:
+    import exceptions
+    import binascii
+    import time
+    import optparse
+    import warnings
+    import os
+    import sys
+    from sonic_eeprom import eeprom_base
+    from sonic_eeprom import eeprom_tlvinfo
+    import subprocess
+except ImportError, e:
+    raise ImportError (str(e) + "- required module not found")
+
+class board(eeprom_tlvinfo.TlvInfoDecoder):
+
+    _TLV_INFO_MAX_LEN = 256
+
+    def __init__(self, name, path, cpld_root, ro):
+        self.eeprom_path = "/sys/bus/i2c/devices/1-0057/eeprom"
+        super(board, self).__init__(self.eeprom_path, 0, '', True)
+

device/accton/x86_64-accton_as7512_32x-r0/plugins/sfputil.py

@@ -0,0 +1,25 @@
+#! /usr/bin/python
+
+try:
+   from sonic_sfp.sfputilbase import sfputilbase
+except ImportError, e:
+    raise ImportError (str(e) + "- required module not found")
+
+
+class sfputil(sfputilbase):
+    """Platform specific sfputil class"""
+
+    port_start = 0
+    port_end = 31
+    ports_in_block = 32
+
+
+    port_to_eeprom_mapping = {}
+    _qsfp_ports = range(0, ports_in_block + 1)
+   
+    def __init__(self, port_num):
+        # Override port_to_eeprom_mapping for class initialization
+        eeprom_path = '/sys/bus/i2c/devices/{0}-0050/sfp_eeprom'
+        for x in range(self.port_start, self.port_end + 1):
+            self.port_to_eeprom_mapping[x] = eeprom_path.format(x + 18)
+        sfputilbase.__init__(self, port_num)

platform/cavium/cavm_platform_modules/Makefile

@@ -5,6 +5,7 @@ SHELL = /bin/bash
 MAIN_TARGET = cavm_platform_modules.deb
 DEB_BUILD_DIR = cavm-platform-modules-deb
 SCRIPT_SRC = $(DEB_BUILD_DIR)/
+SYSTEMD_DIR = /etc/systemd/system
 
 $(addprefix $(DEST)/, $(MAIN_TARGET)): $(DEST)/% :
 	# get sources
@@ -18,9 +19,13 @@ $(addprefix $(DEST)/, $(MAIN_TARGET)): $(DEST)/% :
 	popd
 	mkdir -p $(DEB_BUILD_DIR)/lib/modules/$(KVERSION)
 	mkdir -p $(DEB_BUILD_DIR)/usr/bin
+	mkdir -p $(DEB_BUILD_DIR)$(SYSTEMD_DIR)/multi-user.target.wants/
 
 	cp SONiC/AS7512-32X/module/*.ko $(DEB_BUILD_DIR)/lib/modules/$(KVERSION)
 	cp SONiC/AS7512-32X/accton_as7512_util.py $(DEB_BUILD_DIR)/usr/bin
+	chmod +x $(DEB_BUILD_DIR)/usr/bin/accton_as7512_util.py
+	cp as7512-platform-init.service $(DEB_BUILD_DIR)$(SYSTEMD_DIR)
+	ln -s $(SYSTEMD_DIR)/as7512-platform-init.service $(DEB_BUILD_DIR)$(SYSTEMD_DIR)/multi-user.target.wants/as7512-platform-init.service
 	cp -r DEBIAN $(DEB_BUILD_DIR)
 	dpkg-deb -b  $(DEB_BUILD_DIR) $(MAIN_TARGET)
 

platform/cavium/cavm_platform_modules/as7512-platform-init.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=Accton AS7512-32X Platform initialization service
+Before=pmon.service
+DefaultDependencies=no
+
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/accton_as7512_util.py install
+ExecStop=/usr/bin/accton_as7512_util.py clean
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target