port-sparc64/38462: Sun Type-6 USB keyboard not supported

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>Number:         38462
>Category:       port-sparc64
>Synopsis:       Sun Type-6 USB keyboard not supported
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-sparc64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Apr 19 13:00:00 +0000 2008
>Originator:     David
>Release:        NetBSD-current 2008-18-04 sparc64
>Organization:
>Environment:
>Description:
I am trying to install NetBSD-current 2008-17-04 (lasted binary snapshot 
available) on my Sun Blade 150 computer. This is the sparc64 port.

I am using a Sun Type-6 USB keyboard.
Contratry to older Sun machines, the Sun Blade 150 does not have a Keyboard 
DIN-8 port, so only USB keyboards can be used.

After booting the NetBSD cdrom, the keyboard does not work.
I am stuck when the line "Terminal type (just hit ENTER for 'sun'):" appear, 
since I cannot type anything.
>How-To-Repeat:
Boot a Sun Blade 150 with a Type-6 USB keyboard.
Type Stop-A to enter the OpenBootPROM.
Insert the NetBSD-current 2008-18-04 sparc64 cdrom in the cdrom drive.
Type "boot cdrom" in the OpenBoot PROM.
The kernel is now booting.
Keyboard is not supported.
>Fix: