Hello,

Recently I install OpenBSD 5.7 (amd64) on a iMac 12, 1 (15” iMac from 2011).  I 
applied all 5.7 errata and am current as of August 23, 2015.

The full dmesg follows this -email, but a snippet shows the kernel is having 
trouble with the video card:


error: [drm:pid0:ni_init_microcode] *ERROR* ni_cp: Failed to load firmware 
"radeon-turks_pfp"
error: [drm:pid0:evergreen_startup] *ERROR* Failed to load firmware!
drm:pid0:evergreen_init *ERROR* disabling GPU acceleration
drm:pid0:radeon_bo_unpin *WARNING* 0xffffff026eb6e2b0 unpin not necessary
drm:pid0:radeon_bo_unpin *WARNING* 0xffffff026eb6e2b0 unpin not necessary
error: [drm:pid0:evergreen_init] *ERROR* radeon: MC ucode required for NI+.
drm:pid0:radeondrm_attachhook *ERROR* Fatal error during GPU init
radeon_hwmon_fini stub
ttm_pool_mm_shrink_fini stub
drm0 detached
radeondrm0 detached
vga1 at pci1 dev 0 function 0 "ATI Radeon HD 6600M" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation), using wskbd0
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)


On the first line I noticed “Failed to load firmware” in relation to the video 
card (ATI Radeon HD 6600M).

My questions are:

1. Is a firmware blob needed that I must acquire and then provide to the kernel 
?

2. In a worst case scenario, can I configure the kernel to not probe the video 
card and stick with the standard
VGA output ?  The video works when booting from the install RAM disk and while 
there is not a lot of room
for displaying text, it’s still more usable in that state.

DMESG follows
=-=-=-=-=-=-=-=


OpenBSD 5.7 (GENERIC.MP) #2: Sat Aug 22 22:22:41 EDT 2015

RTC BIOS diagnostic error 64<ROM_cksum,config_unit,invalid_time>
real mem = 8548204544 (8152MB)
avail mem = 8316731392 (7931MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xe0000 (61 entries)
bios0: vendor Apple Inc. version "IM121.88Z.0047.B21.1506101610" date 06/10/15
bios0: Apple Inc. iMac12,1
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP HPET APIC SBST ECDT SSDT SSDT SSDT SSDT SSDT SSDT SSDT 
SSDT MCFG SSDT SSDT SSDT
acpi0: wakeup devices P0P2(S4) GFX0(S4) EC__(S4) HDEF(S4) GIGE(S4) RP01(S4) 
ARPT(S4) RP02(S4) RP03(S4) RP05(S4) EHC1(S3) EHC2(S3)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpihpet0 at acpi0: 14318179 Hz
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM) i5-2400S CPU @ 2.50GHz, 2500.41 MHz
cpu0: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,LONG,LAHF,PERF,ITSC
cpu0: 256KB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
cpu0: apic clock running at 100MHz
cpu0: mwait min=64, max=64, C-substates=0.2.1.1.0, IBE
cpu1 at mainbus0: apid 2 (application processor)
cpu1: Intel(R) Core(TM) i5-2400S CPU @ 2.50GHz, 2500.02 MHz
cpu1: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,LONG,LAHF,PERF,ITSC
cpu1: 256KB 64b/line 8-way L2 cache
cpu1: smt 0, core 1, package 0
cpu2 at mainbus0: apid 4 (application processor)
cpu2: Intel(R) Core(TM) i5-2400S CPU @ 2.50GHz, 2500.02 MHz
cpu2: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,LONG,LAHF,PERF,ITSC
cpu2: 256KB 64b/line 8-way L2 cache
cpu2: smt 0, core 2, package 0
cpu3 at mainbus0: apid 6 (application processor)
cpu3: Intel(R) Core(TM) i5-2400S CPU @ 2.50GHz, 2500.02 MHz
cpu3: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,NXE,LONG,LAHF,PERF,ITSC
cpu3: 256KB 64b/line 8-way L2 cache
cpu3: smt 0, core 3, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
ioapic0: misconfigured as apic 0, remapped to apid 2
acpiec0 at acpi0
acpimcfg0 at acpi0 addr 0xe0000000, bus 0-155
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 1 (P0P2)
acpiprt2 at acpi0: bus 2 (RP01)
acpiprt3 at acpi0: bus 3 (RP02)
acpiprt4 at acpi0: bus 4 (RP03)
acpiprt5 at acpi0: bus 5 (RP05)
acpicpu0 at acpi0: C3, C2, C1, PSS
acpicpu1 at acpi0: C3, C2, C1, PSS
acpicpu2 at acpi0: C3, C2, C1, PSS
acpicpu3 at acpi0: C3, C2, C1, PSS
acpibtn0 at acpi0: PWRB
acpibtn1 at acpi0: SLPB
cpu0: Enhanced SpeedStep 2500 MHz: speeds: 2501, 2500, 2400, 2300, 2200, 2100, 
2000, 1900, 1800, 1700, 1600 MHz
memory map conflict 0xe00f8000/0x1000
memory map conflict 0xfed1c000/0x4000
memory map conflict 0xffed8000/0x28000
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel Core 2G Host" rev 0x09
ppb0 at pci0 dev 1 function 0 "Intel Core 2G PCIE" rev 0x09: msi
pci1 at ppb0 bus 1
radeondrm0 at pci1 dev 0 function 0 "ATI Radeon HD 6600M" rev 0x00
drm0 at radeondrm0
radeondrm0: msi
azalia0 at pci1 dev 0 function 1 "ATI Radeon HD 6670 Audio" rev 0x00: msi
azalia0: no supported codecs
"Intel 6 Series MEI" rev 0x04 at pci0 dev 22 function 0 not configured
uhci0 at pci0 dev 26 function 0 "Intel 6 Series USB" rev 0x05: apic 2 int 21
ehci0 at pci0 dev 26 function 7 "Intel 6 Series USB" rev 0x05: apic 2 int 23
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
azalia1 at pci0 dev 27 function 0 "Intel 6 Series HD Audio" rev 0x05: msi
azalia1: codecs: Cirrus Logic CS4206
audio0 at azalia1
ppb1 at pci0 dev 28 function 0 "Intel 6 Series PCIE" rev 0xb5: msi
pci2 at ppb1 bus 2
bge0 at pci2 dev 0 function 0 "Broadcom BCM57765" rev 0x10, BCM57765 B0 
(0x57785100): msi, address c8:2a:14:35:31:eb
brgphy0 at bge0 phy 1: BCM57765 10/100/1000baseT PHY, rev. 4
ppb2 at pci0 dev 28 function 1 "Intel 6 Series PCIE" rev 0xb5: msi
pci3 at ppb2 bus 3
"Atheros AR9300" rev 0x01 at pci3 dev 0 function 0 not configured
ppb3 at pci0 dev 28 function 2 "Intel 6 Series PCIE" rev 0xb5: msi
pci4 at ppb3 bus 4
"AT&T/Lucent FW643 1394" rev 0x08 at pci4 dev 0 function 0 not configured
ppb4 at pci0 dev 28 function 4 "Intel 6 Series PCIE" rev 0xb5: msi
pci5 at ppb4 bus 5
ppb5 at pci5 dev 0 function 0 vendor "Intel", unknown product 0x1513 rev 0x00
pci6 at ppb5 bus 6
ppb6 at pci6 dev 0 function 0 vendor "Intel", unknown product 0x1513 rev 0x00: 
msi
pci7 at ppb6 bus 7
vendor "Intel", unknown product 0x1513 (class system subclass miscellaneous, 
rev 0x00) at pci7 dev 0 function 0 not configured
ppb7 at pci6 dev 3 function 0 vendor "Intel", unknown product 0x1513 rev 0x00: 
msi
pci8 at ppb7 bus 8
ppb8 at pci6 dev 4 function 0 vendor "Intel", unknown product 0x1513 rev 0x00: 
msi
pci9 at ppb8 bus 9
ppb9 at pci6 dev 5 function 0 vendor "Intel", unknown product 0x1513 rev 0x00: 
msi
pci10 at ppb9 bus 58
ppb10 at pci6 dev 6 function 0 vendor "Intel", unknown product 0x1513 rev 0x00: 
msi
pci11 at ppb10 bus 107
uhci1 at pci0 dev 29 function 0 "Intel 6 Series USB" rev 0x05: apic 2 int 19
ehci1 at pci0 dev 29 function 7 "Intel 6 Series USB" rev 0x05: apic 2 int 22
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1
pcib0 at pci0 dev 31 function 0 "Intel Z68 LPC" rev 0x05
pciide0 at pci0 dev 31 function 2 "Intel 6 Series SATA" rev 0x05: DMA, channel 
0 configured to native-PCI, channel 1 configured to native-PCI
pciide0: using apic 2 int 19 for native-PCI interrupt
wd0 at pciide0 channel 0 drive 0: <ST3500418AS>
wd0: 16-sector PIO, LBA48, 476940MB, 976773168 sectors
atapiscsi0 at pciide0 channel 0 drive 1
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <HL-DT-ST, DVDRW GA32N, KE06> ATAPI 5/cdrom 
removable
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 6
cd0(pciide0:0:1): using PIO mode 4, Ultra-DMA mode 5
ichiic0 at pci0 dev 31 function 3 "Intel 6 Series SMBus" rev 0x05: apic 2 int 18
iic0 at ichiic0
iic0: addr 0x4a 01=20 05=d1 0a=08 10=0a 11=04 12=02 13=02 14=02 15=02 20=f2 
21=01 23=88 words 00=0020 01=2000 02=0000 03=0000 04=00d1 05=d100 06=0000 
07=0000
spdmem0 at iic0 addr 0x50: 4GB DDR3 SDRAM PC3-10600 SO-DIMM
spdmem1 at iic0 addr 0x52: 4GB DDR3 SDRAM PC3-10600 SO-DIMM
usb2 at uhci0: USB revision 1.0
uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci1: USB revision 1.0
uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
isa0 at pcib0
isadma0 at isa0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
nvram: invalid checksum
uhub4 at uhub0 port 1 "Standard Microsystems product 0x2514" rev 2.00/0.03 addr 
2
uhub5 at uhub4 port 1 "Apple Inc. BRCM2046 Hub" rev 2.00/1.00 addr 3
ugen0 at uhub5 port 1 "Apple Inc. Bluetooth USB Host Controller" rev 2.00/2.08 
addr 4
uhidev0 at uhub5 port 2 configuration 1 interface 0 "Apple Computer product 
0x820a" rev 2.00/1.00 addr 5
uhidev0: iclass 3/1, 1 report id
ukbd0 at uhidev0 reportid 1: 8 variable keys, 6 key codes
wskbd0 at ukbd0: console keyboard
uhidev1 at uhub5 port 3 configuration 1 interface 0 "Apple Computer product 
0x820b" rev 2.00/1.00 addr 6
uhidev1: iclass 3/1, 2 report ids
ums0 at uhidev1 reportid 2: 3 buttons
wsmouse0 at ums0 mux 0
uvideo0 at uhub0 port 2 configuration 1 interface 0 "Apple Inc. FaceTime HD 
Camera (Built-in)" rev 2.00/7.55 addr 7
video0 at uvideo0
ugen1 at uhub0 port 2 configuration 1 "Apple Inc. FaceTime HD Camera 
(Built-in)" rev 2.00/7.55 addr 7
uhub6 at uhub1 port 1 "Standard Microsystems product 0x2514" rev 2.00/0.03 addr 
2
umass0 at uhub6 port 1 configuration 1 interface 0 "Apple Card Reader" rev 
2.00/98.33 addr 3
umass0: using SCSI over Bulk-Only
scsibus2 at umass0: 2 targets, initiator 0
sd0 at scsibus2 targ 1 lun 0: <APPLE, SD Card Reader, 1.00> SCSI0 0/direct 
removable serial.05ac8403000000009833
uhidev2 at uhub6 port 2 configuration 1 interface 0 "Apple Computer, Inc. IR 
Receiver" rev 2.00/0.16 addr 4
uhidev2: iclass 3/0, 38 report ids
uhid0 at uhidev2 reportid 36: input=4, output=0, feature=0
uhid1 at uhidev2 reportid 37: input=4, output=0, feature=0
uhid2 at uhidev2 reportid 38: input=4, output=0, feature=0
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
root on wd0a (c2ff89291fa83091.a) swap on wd0b dump on wd0b
clock: unknown CMOS layout
error: [drm:pid0:ni_init_microcode] *ERROR* ni_cp: Failed to load firmware 
"radeon-turks_pfp"
error: [drm:pid0:evergreen_startup] *ERROR* Failed to load firmware!
drm:pid0:evergreen_init *ERROR* disabling GPU acceleration
drm:pid0:radeon_bo_unpin *WARNING* 0xffffff026eb6e2b0 unpin not necessary
drm:pid0:radeon_bo_unpin *WARNING* 0xffffff026eb6e2b0 unpin not necessary
error: [drm:pid0:evergreen_init] *ERROR* radeon: MC ucode required for NI+.
drm:pid0:radeondrm_attachhook *ERROR* Fatal error during GPU init
radeon_hwmon_fini stub
ttm_pool_mm_shrink_fini stub
drm0 detached
radeondrm0 detached
vga1 at pci1 dev 0 function 0 "ATI Radeon HD 6600M" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation), using wskbd0
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)

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