Vsa

32430C	Memory Map

Finish Post

Setup Stack

Enable

Interrupts

CS5535 descriptor set here, after shadow.

Shadow ROM

Initialize and

Enable Cache

Northbridge

Initialization and

CPU Bug Fixes

Chipset

Initialization

Initialization

System ROM

Initialization

PCI and Video

Option ROM

Initialization

Keyboard	N
Keyboard
F1 Pressed?

Flag

Reset Reboot

SuperI/O

Initialization

Setup

Flag

Reset Reboot

Reset

INT 19

Figure 7-4 "GeodeROM Flow - GX Processor/CS5535 Device" (Continued)

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

Page 34

Image 34

Contents

April Publication ID 32430C Advanced Micro Devices, Inc. All rights reserved Trademarks Contents Contents List of Figures GeodeLink Architecture Topology List of Figures List of Tables List of Tables Overview1 Introduction Assumption Load MSR specified by ECX into Edxeax Model Specific Registers2Example MSR Transaction Write the value in Edxeax to MSR specified by ECX Model Specific Registers GX Processor GeodeLink Architecture3AMD Geode CS5535 Companion Device Addressing Example GeodeLink MSR AddressingDescriptors Memory Descriptor Types Sysref Set Clocks and ResetProcessor Initialization Mdiv Vdiv Memory 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 Initialization Keyboard Emulation Logic KEL 1+ Multi Function General Purpose Timers MFGPTsIRQ Mapper System Management Bus SMBus Flash Interface Power Management LogicAcpi Other Legacy DD Initialization Universal Serial Bus USB Diverse Device I/O LocationsATA-5 / Hard Drive Initialization 7 AC97 Audio Controller Initialization GeodeLink Control Processor Initialization Virtual System Architecture InitializationPCI Bus Initialization Allocate Processor Frame Buffer and VSA2 Memory Monochrome Support Miscellaneous InitializationsInitialize Graphics Subsystem Dual Monitor Support 32430C Scratchpad Initialization Implementation5Clocking Post Codes Implementation 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

AMD CS5535 manual Vsa

Models: CS5535

32430C

VSA

Figure 7-4 "GeodeROM Flow - GX Processor/CS5535 Device" (Continued)