[coreboot] flashrom touches only 0x70000-0x80000 addresses of my bios flash

Alexander Gordeev lasaine at lvk.cs.msu.su
Tue May 26 12:04:01 CEST 2009

Hi Carl-Daniel,

On Tue, 26 May 2009 01:56:49 +0200
Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006 at gmx.net> wrote:

> Hi Alexander,
> On 24.05.2009 18:19, Alexander Gordeev wrote:
> > I've tried flashrom on my Gigabyte GA-K8N-SLI board but it can only
> > write to 0x70000-0x80000. This includes both write and erase.
> Did you test erase separately?

Yes, I tested every operation separately. I've also read contents of
the flash after an erase and compared it to the original image:
0-0x6ffff untouched and 0x70000-0x7ffff erased.

> If write/erase is only working on the top 64 kByte, we probably have
> to unlock the rest of the chip as well. Since our Pm49FL004 code
> already has unlocking routines, we probably need a board enable for
> you.
> Do you have a multimeter or continuity tester?

Yes, I have one. What should I do?

> > Could you please help me to solve this?
> We can try.

Thanks :)

> > flashrom v0.9.0+r544
> > Found chipset "NVIDIA CK804", enabling flash write... OK.
> > Found chip "PMC Pm49FL004" (512 KB) at physical address 0xfff80000.
> >   
> The P49FL004 should be supported just fine. CK804 is OK as well.
> Definitely a board enable issue.

Ok, I see.


More information about the coreboot mailing list