kern/50012: radeon: unable to localte BIOS ROM

[armihu%gmail.com@localhost]

>Number:         50012
>Category:       kern
>Synopsis:       radeon: unable to localte BIOS ROM
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Jun 29 11:10:00 +0000 2015
>Originator:     Arto Huusko
>Release:        7.99.19
>Organization:
>Environment:
NetBSD 7.99.19 GENERIC amd64
>Description:
NetBSD 7.99.19 panics in radeon drm code on AMD 5150 APU with the following messages:

drm: initializing kernel modesetting (KABINI 0x1002:0x9830 0x1043:0x8623)
drm: register mmio base: 0xfeb00000
drm: register mmio size: 262144
drm: doorbell mmio base: 0xD0000000
drm: doorbell mmio size: 8388600
DRM error in radeon_get_bios: Unable to locate a BIOS ROM
: error: fatal error during GPU init
radeon0: unable to attach drm: 22
panic: cnopen: no console device

This fails with sources from Jun 20 and Jun 28, so the radeon BIOS changes made on Jun 24 do not help or cause the problem.


>How-To-Repeat:
Boot NetBSD 7.99.19 on with AMD 5150 APU
>Fix:
-