OpenBoot / OpenFirmware

• [wikipedia] Open Firmware
• [princeton] SPARC Boot Sequence
• [sun] SPARC: Using the Boot PROM

Sun documentation

• OpenBoot collection
  • OpenBoot 4.x
    • hardware we use that has this includes: Sun Blade 1000
  • OpenBoot 3.x [quick reference, command reference]
    • hardware we use that has this includes: Ultra 60
  • OpenBoot 2.x [quick reference, command reference]
• man pages
  • eeprom(1M)

Sun hardware-specific documentation

• Sun Blade 1000
• Sun Blade 2000 (ours says it's OpenBoot v4.5)

Notes

• doing Stop-A is NOT the same as rebooting — it leaves OBP (and some registers) in an undefined state. If you're doing hardware tests, you want to do this procedure:
  • setenv diag-switch? true
  • setenv auto-boot? false
  • reset-all
• putting the key in the diag position brings up a totally different set of commands?