AMD CS5535 manual Memory Mapped, Frame Buffer, Vsa Pci

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32430C	Memory Map

RCONF_DEFAULT ROMRC RCONF_DEFAULT ROMBASE

RCONF_DEFAULT DEVRG

RCONF_SMM RCONF_DEFAULT SYSTOP

RCONF_DEFAULT SYSRC

RCONF_A0_BF-RCONF_E0_FF

RCONF_DEFAULT SYSRC

RCONF_BYPASS

RCONF-RCONF7

ROM

PCI

Memory Mapped

PCI

Memory Mapped Frame Buffer

Memory Mapped Video Registers

Memory Mapped VSA

PCI

Frame Buffer

VSA

PCI

Extended Memory

System and Option ROMs

Conventional Memory

SMM and DMM header and table walk properties

Not Used

FFFC0000h

50000000h

40400000h subtracted from Extended Memory

Top of DRAM

VSA and Frame Buffer

Top of System (OS) RAM

Figure 7-3. CPU Core Cache Region Configurations

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

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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 Model Specific Registers2 Example MSR TransactionLoad MSR specified by ECX into Edxeax Write the value in Edxeax to MSR specified by ECXModel Specific Registers GeodeLink Architecture3 AMD GeodeGX Processor CS5535 Companion DeviceGeodeLink MSR Addressing DescriptorsAddressing Example Memory Descriptor TypesSet Clocks and Reset Processor InitializationSysref Mdiv VdivCPU Identification Calculating Processor SpeedMemory Controller Initialization Size Memory Test Extended DramGeodeLink Modules Initialization Default Region Configuration Properties Bit Descriptions Descriptor MSR Address Glpci RegionsDescriptor Allocation AMD Geode CS5535 Companion Device Initialization Chipset IDSet ID Select Idsel Gliu InitializationMulti Function General Purpose Timers MFGPTs IRQ MapperKeyboard Emulation Logic KEL 1+ System Management Bus SMBusPower Management Logic AcpiFlash Interface Other Legacy DD InitializationDiverse Device I/O Locations ATA-5 / Hard Drive InitializationUniversal Serial Bus USB 7 AC97 Audio Controller InitializationVirtual System Architecture Initialization PCI Bus InitializationGeodeLink Control Processor Initialization Allocate Processor Frame Buffer and VSA2 MemoryMiscellaneous Initializations Initialize Graphics SubsystemMonochrome Support Dual Monitor Support32430C Implementation5 ClockingScratchpad Initialization Post CodesImplementation Setup Options6 32430C VSA Memory7MapROM VSA PCI Memory MappedFrame Buffer GeodeROM Flow GX Processor/CS5535 Device VSA Document Revision History Table A-1. Revision HistoryRevision # Revisions / Comments Initial release