[coreboot] Error executing VGA ROM with coreboot
Joseph Smith
joe at settoplinux.org
Mon Nov 2 04:53:29 CET 2009
On 10/31/2009 10:29 AM, Kevin O'Connor wrote:
> On Sat, Oct 31, 2009 at 01:14:21PM +0530, Mansoor wrote:
> [...]
>> c000:0087 0f01 ILLEGAL EXTENDED X86 OPCODE
>> c000:0087: 01 ILLEGAL EXTENDED X86 OPCODE!
>> halt_sys: file /prdmd/coreboot-v2/src/devices/../../util/x86emu/x86emu/ops2.c, line 60
>> halted
>> AX=0000 BX=0000 CX=0000 DX=0080 SP=ffec BP=0000 SI=0000 DI=0057
>> DS=c000 ES=0000 SS=1000 CS=c000 IP=0089 NV UP EI PL NZ NA PO NC
>> c000:0089 e0 ILLEGAL EXTENDED X86 OPCODE
>
> If I dissasemble 0f01e0 I get:
>
> 0: 0f 01 e0 smsww %ax
>
> Though, that might differ depending on the next bytes?
>
> In any case, I get the feeling your rom may be about to enter 32bit
> mode..
>
> You might want to try running:
>
> objdump -m i386 -M i8086 -M suffix -D -b binary myvgarom.rom
>
> and see what it says is at offset 0x0087.
>
Interesting, the Atom has a 32-bit vga bios?
Mansoor please let us know what 0x0087 says.
--
Thanks,
Joseph Smith
Set-Top-Linux
www.settoplinux.org
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