ITE EC 架构介绍ppt课件.ppt

Speaker:WY,ITE8512,1,WhatstheEC?,EmbeddedControllercomesformACPIstructureHostiscommunicatedECbyLPCinterface.TheI/Oportare60/64and62/66ECintegratedps2device,keyboardmatrix,batterycharger,fancontrol,powersequence,hotkeyfunction,backlight,CPUthermalsensor,systempowerconsumption,etc.,2,SystemStructure,NB,SB,EC,LPC,3,KeyboardControllerOverview,4,ECFeature,ITEEC,PS/2KB/MS,MATRIX,ACPI,Powermanagement,SMBus,KBSMonitor,UART/CIR,PWM,ADC/DAC,ShareBIOS,5,ECPosition,6,ShareBIOSArchitecture,64K16MByte,BIOSROMZone,KBCROMZone,0,64K,Max:16M,64KByte,Max:16M-64KByte,Fullspace16MByte,KBCROMZone,7,BIOS&ECCodePosition,8,Features,IBMAT&PS/28042-CompitableHostInterfacesSupportallstandardHostCommandsACPIEmbeddedControllerInterfaceACPISystemManagementBusInterfacePS/2DevicesScanMatrixKeyboardOEMCustomization,9,FeaturesHostInterface,HostInterfacesPrimaryHostInterface(0 x60,0 x64)HIF18042CommandInterfaceSecondaryHostInterface(0 x62,0 x66)HIF2LogicalHIFACPICommandInterfaceHIF3LogicalHIFSMIAccessThirdHostInterface(0 x68,0 x6C)IBMAT&PS/28042-CompatibleStandardKBCCommands0 x64portStandardKBDCommands-0 x60portStandardAUXCommands0 x64portD4command,10,CommandHandler,11,KeyboardControllerStatusRegister64h,12,FeaturesStandardKBCCommands,Standard64commandlistWrite/ReadKeyboardControllerCommandByte(60h/20h)TheKCCBresidesin8042RAMlocation20h,Address20hdefinedintheIBM8042programmingspecification.IBMstandardcommandset,usecommand20htoreadtheKCCBandcommand60htowriteKCCB.Default:0 x65PS/2MouseNotPresent0 x47PS/2MousePresentControllerCommandByte:Bit7-ReservedBit6-KeyboardTranslateBit5-DisableAuxiliaryDeviceBit4-DisableKeyboardBit3-ReservedBit2-SystemFlagBit1-EnableAuxiliaryInterruptBit0-EnableKeyboardInterrupt,13,FeaturesStandardKBCCommands,OutputBufferWriteCommands:WriteKeyboardOutputBuffer(D2h)WriteAuxiliaryDeviceOutputBuffer(D3h)WritetoAuxiliaryDeviceCommand(D4h)WritetoPS2DevicePulseOutputPortCommands:PulseBothResetandGateA20(FCh)PulseGateA20(FDh)PulseSystemReset(FEh),14,FeaturesStandardKBDCommands,StandardKBD60commandlistSet/ResetStatusIndicatorsCommand(EDh)EchoCommand(EEh)SelectAlternateScanCodesCommand(F0h)ReadIdCommand(F2h)SetTypematicRate/DelayCommand(F3h)EnableCommand(F4h)DefaultDisableCommand(F5h)SetDefaultCommand(F6h)SetKeysCommands(F7h-FDh)ResendCommand(FEh)ResetCommand(FFh),15,FeaturesStandardAUXCommands,StandardPS264_D4commandlistResetScaling(E6h)SetScalingto2:1(E7h)SetResolution(E8h)StatusRequest(E9h)SetStreamMode(EAh)ReadData(EBh)Read/SetWrapMode(ECh/EEh)SetRemoteMode(F0h)ReadDeviceType(F2h)SetSamplingRate(F3h)Enable/DisableAuxiliaryDevice(F4h/F5h)SetDefault(F6h)ResetAuxiliaryDevice(FFh),16,FeaturesCommands,ExtendedControllerCommandsSpecificFunctionalitiesAccessLegacyECSpaceSampleA/DChannelTurnOn/OffLEDsAccessConfigurationTableEtc.,17,FeaturesACPIInterface,EmbeddedControllerInterface(0 x62/0 x66)ACPIfullysupportCommandSet0 x80-ReadECspace0 x81-WriteECspace0 x82-BurstEnable0 x83-BurstDisable0 x84-QuerySCIevent,18,FeaturesPS/2Devices,ThreePS/2PortsOneinternalps2mouse&twoexternalps2device(onekeyboard+onemouse)Port1&Port2Keyboard&PointingDevicesPort3TouchpadDevices(Internal)ActivePS/2MultiplexingHot-plugifExt.auxdeviceisalsoattached,sendcommandtoitbutdonotpassExt.responsetothesystem.,19,FeaturesScanMatrix,AllStandardNotebookPCKeysEasyCustomizationDownloadOEMScanTableinRAMUpdateScanTableinROM,20,FeaturesOEMCustomization,OEM-DefinableHotkeys-Hotkey,QuickbuttonOEM-DefinableSMI/SCIEvents-Batteryevent,SystemBeep,Thermelthrottleevent,etc,21,FirmwareArchitecture,22,FirmwareROMImage,KBC.ROM-64K,0 x1000,23,ECFlowchart,Top-LevelFlowDiagram,24,Firmware-Initialization,25,Firmware-Idle,StandbySetup,EnableInterrupts,Yes,No,Idle(SLEEP),26,FirmwareRuntimeService,27,HowToEnterPowerDownMode,1.Checkconditionforenterpower-downmode2.Disablemodule(reduceleakcurrent)3.Changeallgpiopinfunction(ifneed)(reduceleakcurrent)4.Setwake-uppinfunction5.Setwake-upsource6.Setinterruptsource7.Enterpower-downmodeDeepsleepIRQevent8.Setgpiopintooriginalfuntion9.Enablemodule10.Restoreallgpiopinfunction(ifneed)11.Returntomain_loop,28,UpperLoop,KBC-centric:1byteoutputbuffer,waitforeverfortheSystemtoreadkbd/mouse.Pollallotherinterruptsexpectps/2(KBC/ECHostcommands,Externalpin,Smbus,etc)PS2deviceinactive,29,LowerLoop,Waitforinterrupt(sleep,Idle,wait)Ps2devicesactive.1msTimer-periodicswitchtoUpperLoopEachInterruptswitchtoUpperLoop,30,InterruptsSources,Internal:1.Timerinterrupt(for1mstimer.)External:1.IRQpin(WUxx)2.SMBusinterrupt(forreceivedata)3.Peripheralinterrupt(forPS2devicedatain)4.Databufferinterrupt(forIBF,IBF1andIBF2)5.Keyboardinterrupt(forinternalkeypressed),31,ITE8512MemoryIntroduction,ITE8512MemoryMappingTherearedifferentcommandsforthesememoryarea.,Ram,Internal,00FF,32,CodeStructure,BuildEnvironmentSourceCodeDirectoriesSourceCodeOverview,33,CodeStructureBuildEnvironment,WindowsXPDOSCommandpromptToolsKeilC51ToolsAssembler-ax51.exe(v2.13)Compilerc51.exe(v7.20)Linker-lx51.exe(v3.64)Misc.Toolsh2b.exereplace.exe,34,CodeStructureDirectories,CORECORE_ACPI.CCORE_HOSTIF.CCORE_INIT.CCORE_DATA.CCORE_FLASH.CCORE_IRQ.CCORE_MAIN.CCORE_PS2.CCORE_SCAN.CCORE_PORT6064.CCORE_TIMERS.CCORE_CIR.CCORE_CHIPREGS.COEMDefaultOEMProjectOEM_BATTERY.COEM_LED.COEM_FAN.COEM_SCANTABS.COEM_GPIO.COEM_MAIN.CTOOLSNmaker15.exehex2bin.exe,35,CodeStructureBuild,SetEnvironmentKeilC51CustomizeBuildECcodeIteec.makiteec.binIteec_bb.makiteec_bb.binbb_iteec.bin=iteec_bb.bin+iteec.binSetBuildECFirmwareMAKEAll.bat,36,SourceCodeCORE,ResetEntryPointStartup.a51CrisisRecoveryCORECore_bblock.cHardwareDependantChipRegistersInterruptHandlersHardwareControlRoutinesVariableDataTypesCORETYPES.H,37,SourceCodeCore_IRQ.C,On-CHIPperipheralsSysteminterrupttableInterruptHandlerTimers(1mS&150S)HostInterfacesPS/2PortsI2CEtc.,38,SourceCodeCore_BBlock.C,CORECrisisCommandHandlerStandardKBC/KBD/AUXCommandsCrisisModeFlashCommandsGPIOsetting,39,COREInitializationRegistersTimers(1mSTimer&150STimer)HostInterfaceDevicesHooktoOEM,SourceCodeCore_ini.C,40,SourceCodeCore_MAIN.C,CORENormalCodeEntryMainRoutineIdleLoopServiceRoutinesServiceFlags,41,(SourceCodeCore_MAIN.C),16ServiceRoutines:service_unlock-Unlockdevicetransmissionservice_pciPrimaryHostInterface(0 x60,0 x64)service_aux_port-SendbytefromauxiliaryporttoHostservice_1mS1millisecondserviceservice_scanScanMatrixservice_send-Sendbytefromscannerkeyboardservice_pci2-SecondaryHostInterface(0 x62,0 x66)service_pci3-ThirdHostInterfaceservice_core_7Reservedservice_ext_irq-ExternalIRQservice_core_10,service_core_11Reservedservice_chk_aux-CheckExternalmouseexistenceservice_OEM_0,service_OEM_1,service_OEM_2-Reserved,42,SourceCodeCore_port6064.C,COREStandard8042CommandsIBMAT&PS/28042-CompitableStandardKBCCommandsStandardKBDCommandsStandardAUXCommands,43,SourceCodeCore_ps2.C,COREPS/2DevicesLock/unlockPS/2deviceSuspend/ResumePS/2deviceSend/Getdatato/FromPS/2device,44,SourceCodeCore_scan.C,COREScanMatrixKeyboard8x16Matrix(Row:8,Column:16)GhostKeyKeyPress/ReleaseDebounce,45,KeyboardDrawing,46,StandardMatrix,47,(SourceCodePURSCN.C),ScanMatrixKeyboard,48,(SourceCodePURSCN.SRC),GhostKey2(ormore)keyspressedonthesameROW,49,(SourceCodePURSCN.C),KeyPress/ReleaseDebounce,50,SourceCodeCore_XLT.C,COREScanCodeTranslationR/CInputTranslatetoScanCodeStoreintointernalkeybufferHotkey,51,SourceCodeCore_ACPI.C,COREACPICommandHandlerSCIGenerationSMBusProtocolHandlerACPIECSpaceAccess,52,SourceCodeCore_SMBus,Core_SMB.CCORESMBusProtocolRead/WriteSmbusbyteRead/WriteSmbusWordRead/WriteSmbusBlock,53,SourceCodeCore_DAT.C,COREInternalVariablesBITDATAExternalVariablesIDATAXDATACHIPTY