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#!/usr/bin/env python
#
# Copyright 2018 Raptor Engineering, LLC
# Released under the terms of the GPL v3
#
# Get current istep with
# busctl get-property org.openbmc.status.IPL /org/openbmc/status/IPL org.openbmc.status.IPL current_istep
# Get current status with
# busctl get-property org.openbmc.status.IPL /org/openbmc/status/IPL org.openbmc.status.IPL current_status
import gobject
import dbus
import dbus.service
import dbus.mainloop.glib
import os
import subprocess
import traceback
import obmc.dbuslib.propertycacher as PropertyCacher
from obmc.dbuslib.bindings import DbusProperties, DbusObjectManager, get_dbus
import obmc.enums
import obmc_system_config as System
import obmc.mapper.utils
import obmc.inventory
import obmc.system
DBUS_NAME = 'org.openbmc.status.IPL'
OBJ_NAME = u'/org/openbmc/status/IPL'
IPL_FLAG_DIR = '/run/openbmc/'
IPL_FLAG_FILE = 'host@0-ipl-complete'
HOST_STATUS_RUNNING = "xyz.openbmc_project.State.Host.HostState.Running"
IPL_SBE_DONE_ISTEP_MAJOR = 5
IPL_SBE_DONE_ISTEP_MINOR = 2
IPL_HOSTBOOT_START_ISTEP_MAJOR = 6
IPL_HOSTBOOT_START_ISTEP_MINOR = 0
IPL_COMPLETE_ISTEP_MAJOR = 21
IPL_COMPLETE_ISTEP_MINOR = 3
SKIBOOT_RUNNING_ISTEP_MAJOR = 22
SKIBOOT_RUNNING_ISTEP_MINOR = 0
KERNEL_RUNNING_ISTEP_MAJOR = 23
KERNEL_RUNNING_ISTEP_MINOR = 0
KERNEL_COMPLETE_ISTEP_MAJOR = 23
KERNEL_COMPLETE_ISTEP_MINOR = 1
class IPLStatus(DbusProperties, DbusObjectManager):
def __init__(self, bus, obj_name):
super(IPLStatus, self).__init__(
conn=bus,
object_path=obj_name)
self.bus = bus
self.prev_access_fail_count = 0;
self.activateMonitoring = False
self.last_status = "";
self.last_istep = "";
if not os.path.exists(IPL_FLAG_DIR):
os.makedirs(IPL_FLAG_DIR)
host_state_dev = self.bus.get_object("xyz.openbmc_project.State.Host", u'/xyz/openbmc_project/state/host0')
host_state_iface = dbus.Interface(host_state_dev, 'org.freedesktop.DBus.Properties')
host_state_value = host_state_iface.Get("xyz.openbmc_project.State.Host", "CurrentHostState")
if host_state_value is not None:
if (host_state_value == HOST_STATUS_RUNNING):
self.activateMonitoring = True
self.Set(DBUS_NAME, "current_istep", "")
self.Set(DBUS_NAME, "current_status", "UNKNOWN")
bus.add_signal_receiver(
self.HostStatusChangeHandler,
dbus_interface="org.freedesktop.DBus.Properties",
signal_name="PropertiesChanged",
path=u'/xyz/openbmc_project/state/host0')
gobject.timeout_add(1, self.readIPLStatus)
print "IPLStatus Init Done"
# BMC bits OEM1, OEM2, and OEM3 are the signalling flags
# OEM1 is unconditionally set at skiboot completion and is only cleared by the BMC IPL monitor
# OEM2 is used as a persistent state indicator, and is only set and cleared by the BMC IPL monitor
# OEM3 is unconditionally set at kernel boot completion and is only cleared by the BMC IPL monitor
def getSkibootBootFlags(self):
result = 0
try:
proc = subprocess.Popen(["devmem", "0x1e789060", "16"], stdout=subprocess.PIPE, stderr=open(os.devnull, 'wb'), shell=False)
(out, err) = proc.communicate()
result = (int(out, 16) & 28) >> 2
except:
pass
return result
def setSkibootBootFlags(self, value):
try:
proc = subprocess.Popen(["devmem", "0x1e789060", "16"], stdout=subprocess.PIPE, stderr=open(os.devnull, 'wb'), shell=False)
(out, err) = proc.communicate()
reg_data = (int(out, 16) & (~28)) | ((value & 7) << 2)
proc = subprocess.Popen(["devmem", "0x1e789060", "16", str(reg_data)], stdout=subprocess.PIPE, stderr=open(os.devnull, 'wb'), shell=False)
(out, err) = proc.communicate()
except:
print "IPLStatus unable to reset skiboot / kernel flags!"
pass
def readIPLStatus(self):
try:
# Set up defaults
current_status = "OFFLINE"
current_istep = ""
sbe_fetch_failed = False
hostboot_fetch_failed = False
sbe_istep_major = 0
sbe_istep_minor = 0
hostboot_istep_major = 0
hostboot_istep_minor = 0
current_istep_major = 0
current_istep_minor = 0
if (self.activateMonitoring == False):
# Publish offline status
if (self.last_status != current_status):
self.Set(DBUS_NAME, "current_status", current_status)
self.IPLStatusChanged(current_status)
self.last_status = current_status
self.setSkibootBootFlags(0)
if (self.last_istep != current_istep):
self.Set(DBUS_NAME, "current_istep", current_istep)
self.IPLStepChanged(current_istep)
self.last_istep = current_istep
self.setSkibootBootFlags(0)
return True;
# Get SBE status
proc = subprocess.Popen(["pdbg", "-b", "kernel", "-p0", "getcfam", "0x2809"], stdout=subprocess.PIPE, stderr=open(os.devnull, 'wb'), shell=False)
(out, err) = proc.communicate()
status_data = out.split("=")
if (len(status_data) > 1):
try:
binary_status_data = bin(int(status_data[1], 16))
except ValueError:
sbe_fetch_failed = True
if (sbe_fetch_failed == False):
try:
sbe_istep_major = int(binary_status_data[14:22], 2)
sbe_istep_minor = int(binary_status_data[22:28], 2)
sbe_istep = str(sbe_istep_major) + "," + str(sbe_istep_minor)
except ValueError:
sbe_fetch_failed = True
else:
sbe_fetch_failed = True
# Determine if hostboot should be checked for activity
hostboot_active = False
if (sbe_fetch_failed):
# Check if hostboot is running
hostboot_active = True
if ((sbe_istep_major == IPL_SBE_DONE_ISTEP_MAJOR) and (sbe_istep_minor == IPL_SBE_DONE_ISTEP_MINOR)):
# Hostboot should definitely be running
hostboot_active = True
# Get hostboot status
if (hostboot_active == False):
if (sbe_fetch_failed == False):
hostboot_istep_major = sbe_istep_major
hostboot_istep_minor = sbe_istep_minor
hostboot_istep = sbe_istep
else:
proc = subprocess.Popen(["pdbg", "-b", "kernel", "-p0", "getcfam", "0x283c"], stdout=subprocess.PIPE, stderr=open(os.devnull, 'wb'), shell=False)
(out, err) = proc.communicate()
status_data = out.split("=")
if (len(status_data) > 1):
try:
binary_status_data = bin(int(status_data[1], 16))
except ValueError:
hostboot_fetch_failed = True
if (hostboot_fetch_failed == False):
try:
hostboot_istep_magic = int(binary_status_data[2:10], 2)
hostboot_istep_major = int(binary_status_data[18:26], 2)
hostboot_istep_minor = int(binary_status_data[26:34], 2)
except ValueError:
hostboot_fetch_failed = True
if (hostboot_fetch_failed == False):
if (hostboot_istep_magic != 170):
hostboot_istep_major = 0
hostboot_istep_minor = 0
hostboot_istep = str(hostboot_istep_major) + "," + str(hostboot_istep_minor)
else:
hostboot_fetch_failed = True
if ((sbe_fetch_failed == False) and (hostboot_fetch_failed == False)):
# Figure out system status
current_istep_major = sbe_istep_major
current_istep_minor = sbe_istep_minor
if (hostboot_istep_major > current_istep_major):
current_istep_major = hostboot_istep_major
if (hostboot_istep_minor > current_istep_minor):
current_istep_minor = hostboot_istep_minor
current_istep = str(current_istep_major) + "," + str(current_istep_minor)
# Asseble status strings
current_status = "OFFLINE"
if ((current_istep_major > 0) or (current_istep_minor > 0 )):
current_status = "IPL_RUNNING"
if (current_istep_major >= IPL_COMPLETE_ISTEP_MAJOR):
skiboot_flags = self.getSkibootBootFlags()
if (skiboot_flags == 0):
current_status = "IPL_RUNNING"
current_istep_major = SKIBOOT_RUNNING_ISTEP_MAJOR
current_istep_minor = SKIBOOT_RUNNING_ISTEP_MINOR
current_istep = str(current_istep_major) + "," + str(current_istep_minor)
elif (skiboot_flags == 1):
current_status = "IPL_RUNNING"
current_istep_major = KERNEL_RUNNING_ISTEP_MAJOR
current_istep_minor = KERNEL_RUNNING_ISTEP_MINOR
current_istep = str(current_istep_major) + "," + str(current_istep_minor)
else:
current_status = "IPL_COMPLETE"
current_istep_major = KERNEL_COMPLETE_ISTEP_MAJOR
current_istep_minor = KERNEL_COMPLETE_ISTEP_MINOR
current_istep = str(current_istep_major) + "," + str(current_istep_minor)
# Reset failure counter
self.prev_access_fail_count = 0
else:
# Increment failure counter
if (self.prev_access_fail_count < 255):
self.prev_access_fail_count += 1
# Since it is extremely unlikely that both fetches will fail unless the host is offline, simply check that both fetches passed or failed before continuing
if (sbe_fetch_failed == hostboot_fetch_failed):
# Check error results multiple times before signalling unexpected offline status
if ((current_status == "OFFLINE") and (self.prev_access_fail_count < 10)):
return True
# Check for status changes
if (self.last_status != current_status):
if (current_status == "IPL_COMPLETE"):
# Set skiboot completion flag
self.setSkibootBootFlags(2)
# Signal systemd that IPL is complete
try:
with open(IPL_FLAG_DIR + IPL_FLAG_FILE, 'a'):
os.utime(IPL_FLAG_DIR + IPL_FLAG_FILE, None)
systemd_emit_dev = self.bus.get_object("org.freedesktop.systemd1", u"/org/freedesktop/systemd1")
systemd_emit_iface = dbus.Interface(systemd_emit_dev, 'org.freedesktop.systemd1.Manager')
systemd_emit_function = getattr(systemd_emit_iface, 'StartUnit')
systemd_emit_function.call_async('obmc-host-ipl-complete@0.target', 'replace')
except Exception as e:
pass
else:
try:
os.remove(IPL_FLAG_DIR + IPL_FLAG_FILE)
except:
pass
if (current_status == "IPL_RUNNING"):
if (current_istep_major < IPL_COMPLETE_ISTEP_MAJOR):
self.setSkibootBootFlags(0)
# Publish status
if (self.last_status != current_status):
self.Set(DBUS_NAME, "current_status", current_status)
self.IPLStatusChanged(current_status)
self.last_status = current_status
if (self.last_istep != current_istep):
self.Set(DBUS_NAME, "current_istep", current_istep)
self.IPLStepChanged(current_istep)
self.last_istep = current_istep
return True
except Exception as e:
print(e)
traceback.print_exc()
return True
def HostStatusChangeHandler(self, interface_name, changed_properties,
invalidated_properties):
value = changed_properties.get('CurrentHostState')
if value is not None:
if (value == HOST_STATUS_RUNNING):
self.activateMonitoring = True
else:
self.setSkibootBootFlags(0)
self.activateMonitoring = False
@dbus.service.method(DBUS_NAME, in_signature='', out_signature='s')
def getCurrentIPLStatus(self):
return self.Get(DBUS_NAME, "current_status")
@dbus.service.signal(DBUS_NAME)
def IPLStatusChanged(self, message):
# Signal is emitted on method return
pass
@dbus.service.method(DBUS_NAME, in_signature='', out_signature='s')
def getCurrentIPLIStep(self):
return self.Get(DBUS_NAME, "current_istep")
@dbus.service.signal(DBUS_NAME)
def IPLStepChanged(self, message):
# Signal is emitted on method return
pass
def NewObjectHandler(self, obj_path, iprops, bus_name=None):
current_istep = self.Get(DBUS_NAME, "current_istep")
if obj_path in System.EXIT_STATE_DEPEND[current_istep]:
print "New object: "+obj_path+" ("+bus_name+")"
if __name__ == '__main__':
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
bus = get_dbus()
obj = IPLStatus(bus, OBJ_NAME)
mainloop = gobject.MainLoop()
obj.unmask_signals()
name = dbus.service.BusName(DBUS_NAME, bus)
print "Running IPLStatus"
mainloop.run()
# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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