Manuals / AMD / Computer Equipment / Computer Hardware

AMD CS5535 manual Overview1, Introduction, Assumption

Models: CS5535

1 36

Download 36 pages 11 Kb

Page 9

Overview1

Overview	32430C

Overview1

1.1Introduction

This document describes the changes needed for GeodeROM and other BIOSs to support the AMD Geode™ GX proces- sor and the AMD Geode™ CS5535 companion device. GeodeROM requires modifications for hardware initialization and specific implementations.

Each section targets the GeodeROM changes needed to support the GX processor/CS5535 device system. Where appro- priate, the changes list the “Entry Conditions” that briefly describe the machine state required to execute that function, as well as some pseudo code for implementing the changes.

For more information on GeodeROM, see the AMD Geode™ GeodeROM Functional Specification (publication ID 32087).

1.2Assumption

The following assumption must be made clear during the design phase:

GeodeROM expects all memory has a serial presence detect (SPD) to determine characteristics for memory controller ini- tialization. If a SPD is not present, GeodeROM outputs a POST code and halts, unless customizations have been made for the platform.

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

9

Image 9

AMD CS5535 manual Overview1, Introduction, Assumption

Contents

AMD Geode GX Processor CS5535 Companion Device GeodeROM Porting Guide Publication ID 32430CApril AMD Geode GX Processor/CS5535 Companion Device GeodeROM Porting Guide2006 Advanced Micro Devices, Inc. All rights reserved TrademarksAMD Geode GX Processor/CS5535 Companion Device GeodeROM Porting Guide 6.0 Setup Options 7.0 Memory Map Appendix A Support Documentation ContentsList of Figures List of Tables 1.0 Overview 2.0 Model Specific RegistersContents 32430CAMD Geode GX Processor/CS5535 Companion Device GeodeROM Porting Guide List of Figures Figure 7-3. CPU Core Cache Region ConfigurationsFigure 3-1. GeodeLink Architecture Topology Figure 4-1. Clock Control Figure 7-1. GLIU Descriptor Map32430C List of FiguresAMD Geode GX Processor/CS5535 Companion Device GeodeROM Porting Guide List of Tables Table 4-1. Default Region Configuration Properties Bit DescriptionsTable 4-2. Diverse Device I/O Locations List of Tables32430C List of TablesAMD Geode GX Processor/CS5535 Companion Device GeodeROM Porting Guide Overview1 1.1 Introduction1.2 Assumption 32430C AssumptionAMD Geode GX Processor/CS5535 Companion Device GeodeROM Porting Guide 2.1 Example MSR Transaction Model Specific Registers2RDMSR WRMSR32430C Model Specific RegistersAMD Geode GX Processor/CS5535 Companion Device GeodeROM Porting Guide AMD Geode GeodeLink Architecture3GX Processor CS55353.2 Descriptors 3.1 GeodeLink MSR Addressing3.1.1 Addressing Example 3.2.1 Memory Descriptor TypesInitialization4 4.1.1 Set Clocks and Reset4.1 Processor Initialization Figure 4-1. Clock Control4.1.2 Calculating Processor Speed 4.1.3 Memory Controller Initialization4.1.2.1 CPU Identification 4.1.4 Test Extended DRAM 4.1.5 GeodeLink Modules Initialization4.1.3.1 Size Memory 4.1.5.3 Cache Setup Table 4-1. Default Region Configuration Properties Bit Descriptions4.1.5.4 Region Configuration 4.1.5.1 GLIU Descriptors InitializationDescriptor Allocation GLPCI RegionsDescriptor MSR Address4.2.1 Chipset ID 4.2 AMD Geode CS5535 Companion Device Initialization4.2.2 Set ID Select IDSEL 4.2.3 GLIU Initialization4.2.4.1 IRQ Mapper 4.2.4.5 Multi Function General Purpose Timers MFGPTs4.2.4.2 Keyboard Emulation Logic KEL 1+ 4.2.4.3 System Management Bus SMBus4.2.4.6 ACPI 4.2.4.7 Power Management Logic4.2.4.8 Flash Interface 4.2.4.9 Other Legacy DD Initialization4.2.5 ATA-5 / Hard Drive Initialization Table 4-2. Diverse Device I/O Locations4.2.6 Universal Serial Bus USB 4.2.7 AC97 Audio Controller Initialization4.4 PCI Bus Initialization 4.3 Virtual System Architecture Initialization4.2.8 GeodeLink Control Processor Initialization 4.3.1 Allocate Processor Frame Buffer and VSA2 Memory4.5.1 Initialize Graphics Subsystem 4.5 Miscellaneous Initializations4.5.1.1 Monochrome Support 4.5.1.2 Dual Monitor Support32430C InitializationAMD Geode GX Processor/CS5535 Companion Device GeodeROM Porting Guide 5.1 Implementation Implementation55.1.1 Clocking 5.1.2 Scratchpad Initialization32430C ImplementationAMD Geode GX Processor/CS5535 Companion Device GeodeROM Porting Guide Setup Options6 AMD Geode GX Processor/CS5535 Companion Device GeodeROM Porting Guide 32430CMemory7Map Figure 7-1. GLIU Descriptor MapFigure 7-2. CPU Core Cache Descriptors Figure 7-3. CPU Core Cache Region Configurations Memory Map Figure 7-4. GeodeROM Flow - GX Processor/CS5535 Device32430C AMD Geode GX Processor/CS5535 Companion Device GeodeROM Porting Guide32430C Figure 7-4 GeodeROM Flow - GX Processor/CS5535 Device ContinuedTable A-1. Revision History A.1 Document Revision HistoryRevision # PDF Date