[coreboot] How do I turn on display with RS690 ?

[유택연]

I used coreboot with SeaBIOS and AMD's vBIOS.
System booted successfully except display not turned on.

I used DirectTMDS for primay display.
BIOS had been red my display's EDID rom.
I had seen this signals with an oscilloscope.

Error ocurred on executing VGA BIOS code.
How do I turn on display?

Here is log message.

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.....
Start bios (version pre-0.4.2-20090903_180544-azalea)
init ivt
init bda
init pic
init timer
tsc calibrate start=2407971776 end=2410548093 diff=2576317
CPU Mhz=1500
math cp init
Find memory size
Attempting to find coreboot table
Found coreboot table forwarder.
Now attempting to find coreboot memory map
Found mainboard amd dbm690t
Found CBFS header at 0xfffdffe0
Ram Size=0x1c000000
Found 1 cpu(s)
malloc setup
init PMM
init PNPBIOS table
Scan for VGA option rom
Attempting to init PCI bdf 01:05.0 (dev/ven 791f1002)
Searching CBFS for prefix pci1002,791f.rom
Found CBFS file fallback/payload
Found CBFS file fallback/coreboot_ram
Found CBFS file vgaroms/radeon.rom
Found CBFS file img/filo
Found CBFS file
Attempting to map option rom on dev 01:05.0
Option rom sizing returned 0 0
Searching CBFS for prefix vgaroms/
Found CBFS file fallback/payload
Found CBFS file fallback/coreboot_ram
Found CBFS file vgaroms/radeon.rom
Copying data 55296 at 0xfff20678 to 196608 at 0x000c0000
Checking rom 0x000c0000 (sig aa55 size 108)
Running option rom at c000:0003
fail handle_15XX:294(86):
   a=00004e08  b=00000080  c=00000000  d=0000c000 ds=c000 es=f000 ss=0000
  si=0000abc8 di=0000b0b6 bp=00000000 sp=000079f2 cs=c000 ip=2cc2  f=0046
fail handle_15XX:294(86):
   a=07ff4e08  b=00000005  c=00004e17  d=0000c002 ds=c000 es=f000 ss=0000
  si=00002d58 di=0000b0b6 bp=000079d6 sp=000079f2 cs=c000 ip=2c5f  f=0046
fail handle_15XX:294(86):
   a=00004e08  b=00000000  c=0000a401  d=00000080 ds=c000 es=f000 ss=0000
  si=0000abc8 di=0000b0b6 bp=000079d6 sp=000079f0 cs=c000 ip=2c19  f=0046
Searching CBFS for prefix vgaroms/
Found CBFS file img/filo
Found CBFS file
Turning on vga console
Starting SeaBIOS (version pre-0.4.2-20090903_180544-azalea)

init keyboard
i8042 timeout on flush
init serial
Found 2 serial ports
Relocating coreboot bios tables
init SMBIOS tables
SMBIOS ptr=0x000fdce0 table=0x1bfff800
init boot device ordering
init hard drives
ATA controller 0 at 2020/2040 (dev 90 prog_if 8f)
ATA controller 1 at 2028/2044 (dev 90 prog_if 8f)
powerup iobase=2020 st=7f
powerup iobase=2020 st=7f
ata_detect ataid=0 sc=7f sn=7f dh=7f
powerup iobase=2020 st=7f
powerup iobase=2020 st=7f
ata_detect ataid=1 sc=7f sn=7f dh=7f
powerup iobase=2028 st=7f
powerup iobase=2028 st=7f
ata_detect ataid=2 sc=7f sn=7f dh=7f
powerup iobase=2028 st=7f
powerup iobase=2028 st=7f
ata_detect ataid=3 sc=7f sn=7f dh=7f
.....
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Jaagar