Specifications

49
5HARDWARE MANAGEMENT
ThehardwaremanagementsubsystemincludestheIntelligentPlatformManagement
Controller(IPMC),themanagedsensors,andthecommunicationinterfacestoexternal
entitiessuchastheShelfManager.TheIPMCcontrolsthehardwaremanagement
subsy stembyenablingpayloadpowerandports,detectingcomponenthardwarestates,
initiatingresets,andmonitoringmanagedsensors.
TheCPM’shardwaremanagementsystemcomplieswiththeIntelligentPlatform
ManagementInterface(IPMI)1.5specification,whichdefinesasetofcommoninterfaces
formanagingthesystemandformonitoringsystemhealth.TheIPMC(whichis
independentfromtheCPU)runstheIPMIfirmware.Thisallowsadministratorstomanage
asystemremotelyevenintheabsenceofoperatingsystemorsystemmanagement
software.Figure 11showsthefunctionalblocksmakingupthehardwaremanagement
subsystem.
Figure 11. Hardware management subsystem block diagram
AMC with MMC
RTM with MMC
IPMB 0
Ethernet
Controllers
(Serial over LAN)
EEPROM, CPU Complex FPGA,
PECI, Local Hardware
(Temperature & Voltage)
Sensors
IPMC
Watchdog
IPMC FPGA
H8
2166
LPC Bus
IPMB 1
Payload Processor
Complex
IPMB-L
[I2C Bus 5]
[I2C Bus 3]
[I2C Bus 2]
[I2C Bus 1]
[I2C Bus 0]
[I2C Bus 4]
MUX
ICH10 SMBus
MUX
E-Keying
Logic &
Controllers
(SAS/SATA
& Fabric
Muxes)
SPD DIMM
Temperature
Sensors