Kernel for EFIKA seems to be very different to PEG (no 2nd IDE-channel, no serialport, etc.). I think, your question can only be answered from MOS-team (Frank?).

Bootscreen in OF: That is strange at both cards: OF uses standard VESA-specifications, which should be implemented in every (PC) graphic-card. EFIKA supports 33/66MHz PCI (3.3V).
When booting to OF-console, try to press F6-F9 - EFIKA shoud change to higher resolutions (notice: does'nt work with every keyboard and it must be connected directly (no hub) and can take some seconds to react)
If card is not recognized by OF, Quark-Kernel may also have problems. To veryfy that, connect a second PC to serial-port and check EFIKA-Boot-Strap (Bootstrap serial Port 115200 8N1). Then something like this should appear:

Bootstrap serial Port 115200 8N1


EFIKA 5K2 Boot Strap [RELEASE BUILD] (c) 2002-2007 bplan GmbH (BUILD 20070122 84
240)
Running on CPU PVR: 0x80822014
Running on system SVR: 0x80110022
BIOS Code position: 0xFFF040D0
Setup System Config... Done.
Setup Memory Config... Done.
Setup PCI... Done.
Setup ATA... Done.
Setup USB... Done.
Setup ETH... Done.
Setup AC97... Done.
Testing 08000000 Bytes, Pass: 00000000 Failed: 00000000
RAM TEST (fill random)... Done.
cpu0: PowerPC,G2 CPUClock 396 Mhz BUSClock 132 Mhz (Version 0x8082,0x2014)
channel 0 unit 0 : ata | TS8GCF133 | 20140106
ATA device not present or not responding
EMULATION INT HANDLER ENTERED WITH:
INT NO: 15

EAX=0003 EBX=1111 ECX=2222 EDX=3333 ESP=0000 EBP=5555 ESI=6666 EDI=7777
AX=4E08 BX=C905 CX=0007 DX=102A SP=6C08 BP=5555 SI=6C16 DI=9BB6
DS=C000 ES=BAD0 SS=C000 CS=F000 IP=FE15 NV UP -- PL ZR NA PE NC
CS:IP = F4 FS=BAD4 GS=BAD5C9F6 C000 0244 3000 0000 01B4 ABC6 0200
UNHANDLED INT 10 FUNCTION 0007 WITHIN EMULATION
VM using 4354726 x86 cycles for GFX init
running....

At the last lines you see the result of virtual X86-machine, binding the graphiccard.