Sun Microsystems CP2500 Contents

iii

Contents

Preface xi

1. Watchdog Timer 1

Overview 1

PICL Plug-In Module 2

Watchdog Node Management Code 5

OpenBoot PROM Interface 21

2. Environmental Monitoring 23

Environmental Monitoring Component Compatibility 24

Typical Environmental Monitoring System Application 24

Typical Cycle From Power Up to Shutdown 26

Environmental Monitoring Protection at the OpenBoot PROM 26

Environmental Monitoring Protection at the Operating System Level 26

Post Shutdown Recovery 27

Hardware Environmental Monitoring Functions 28

Switching Power On and Off 31

Inlet, Exhaust, and CPU Temperature Monitoring 31

Adjusting the Environmental Monitoring Warning, Critical, and Shutdown

Parameter Settings on the Board 32

OpenBoot PROM Environmental Monitoring 33

Contents

Main Page Contents Page Page Page Tables Page Code Samples Page Preface How This Book Is Organized Using UNIX Commands Typographic Conventions Shell Prompts Related Documentation Online documents are available at: http://www.sun.com/documentation Documentation, Support, and Training Third-Party WebSites Sun Welcomes Your Comments Watchdog Timer Overview PICL Plug-In Module Note Page Page Watchdog Node Management Code Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page OpenBoot PROM Interface Page Environmental Monitoring Page Page Typical Cycle From Power Up to Shutdown Environmental Monitoring Protection at the OpenBoot PROM Environmental Monitoring Protection at the Operating System Level Post Shutdown Recovery Hardware Environmental Monitoring Functions Netra CP2500. Page Page Switching Power On and Off Inlet, Exhaust, and CPU Temperature Monitoring Page Note OpenBoot PROM Environmental Monitoring Warning Temperature Response at OpenBoot PROM Critical Temperature Response at OpenBoot PROM Using the show-sensors Command at the OpenBoot PROM Environmental Monitoring Application Programming Reading Temperature Sensor States Using the PICL API Using a Configuration File for Sensor Information Solaris Driver Interface Sample Application Program Page Page } Reading the CPU Temperature and Environmental Limits prtdiag command example: monitoring warning that runs when the CPU temperature exceeds the set limit. User Flash User Flash Usage and Implementation User Flash Driver OpenBoot PROM Device Tree and Properties User Flash Device Files Interface (Header) File Application Programming Interface The ioctl supported commands are listed below: Note that these ioctl commands are not supported: Structures to Use in IOCTL Arguments PROM Information Structure User Flash User Interface Structure The user flash user interface structure holds user parameters to commands such as erase. Errors Example Programs Example programs are provided in this section for the following actions on user flash device: Read Example Program Write Example Program Page Block Erase Example Program Page Sample User Flash Application Program Page Page Page Page Page Index V W