AMD CS5535 manual Acpi, Power Management Logic, Flash Interface, Other Legacy DD Initialization

Page 22

32430C

Initialization

4.2.4.6ACPI

Location:

9C00h or other normal ACPI location.

Description: NA

Initialization: ACPI VSM

4.2.4.7Power Management Logic

Location:

9D00h put on the end of ACPI.

Description: NA

Initialization: VSA technology and ACPI VSM as needed.

4.2.4.8Flash Interface

Location:	4 LBARs for 4 Flash devices
Description:	NA
Initialization:	The default values for the LBARs are located in BDCFG.INC in the platform directory, but can be

	changed at Boot via setup. The Flash interface is configured in the code at ChipsetFlashSetup in
	CHIPSET.ASM based on the corresponding NVRAM values.

4.2.4.9Other Legacy DD Initialization

Location:	Default legacy definitions.
Description:	Initialize COM ports, LPT ports, RTC.
Initialization:	These devices are initialized in the same fashion as with a normal SuperI/O and CS5535. Any MSR reg-
	ister settings will be done in chipset individualization. GeodeROM can handle multiple devices and loca-
	tions by design.

22	AMD Geode™ GX Processor/CS5535 Companion Device GeodeROM Porting Guide

Image 22

Contents April Publication ID 32430CAdvanced Micro Devices, Inc. All rights reserved TrademarksContents Contents List of Figures GeodeLink Architecture TopologyList of Figures List of Tables List of Tables Overview1 IntroductionAssumption Load MSR specified by ECX into Edxeax Model Specific Registers2Example MSR Transaction Write the value in Edxeax to MSR specified by ECXModel Specific Registers GX Processor GeodeLink Architecture3AMD Geode CS5535 Companion DeviceAddressing Example GeodeLink MSR AddressingDescriptors Memory Descriptor TypesSysref Set Clocks and ResetProcessor Initialization Mdiv VdivMemory Controller Initialization Calculating Processor SpeedCPU Identification GeodeLink Modules Initialization Test Extended DramSize Memory Default Region Configuration Properties Bit Descriptions Descriptor Allocation Glpci RegionsDescriptor MSR Address Set ID Select Idsel AMD Geode CS5535 Companion Device InitializationChipset ID Gliu InitializationKeyboard Emulation Logic KEL 1+ Multi Function General Purpose Timers MFGPTsIRQ Mapper System Management Bus SMBusFlash Interface Power Management LogicAcpi Other Legacy DD InitializationUniversal Serial Bus USB Diverse Device I/O LocationsATA-5 / Hard Drive Initialization 7 AC97 Audio Controller InitializationGeodeLink Control Processor Initialization Virtual System Architecture InitializationPCI Bus Initialization Allocate Processor Frame Buffer and VSA2 MemoryMonochrome Support Miscellaneous InitializationsInitialize Graphics Subsystem Dual Monitor Support32430C Scratchpad Initialization Implementation5Clocking Post CodesImplementation Setup Options6 32430C ROM Memory7MapVSA Frame Buffer Memory MappedVSA PCI GeodeROM Flow GX Processor/CS5535 Device VSA Revision # Revisions / Comments Document Revision HistoryTable A-1. Revision History Initial release