HCL for Oracle Solaris 11
'prtconf -pv' Output Information
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Title: pci_autoconfig: PCI enumeration on HP DL585/DL380 hangs at boot
If you use a serial console, and enable pci_autoconfig debugging it appears to alleviate the problem.
eeprom console=ttya input-device=ttya output-device=ttya
Edit /boot/grub/menu.lst and comment / uncomment the lines indicated by the notes in that file:
1) uncomment the lines starting `serial' and `terminal'
2) comment out the one starting with `splashimage'
Add 'set pci_autoconfig:pci_boot_debug=1' to the /etc/system file.
Optionally reconfigure the BIOS to use the serial port and you're away.
There is a beta patch IDR124145-02.tar.Z so people can install a code fix for this problem. You install IDR124145-02 with patchadd. When the released patch with this fix comes out you will need to remove the IDR. It will show up on a system via showrev -p, just like a patch, but it is not something Sun provides support for the way we do patches.