[flashrom] Flash went all well but MB doesn't boot anymore :)

[Andrey Korolyov]

On Sat, Jul 23, 2016 at 5:59 PM, Pierre P <ppz at outlook.fr> wrote:
> Dear Flashrom Team,
>
> As the title suggest, I flashed my old Asus M2V with coreboot but now it
> doesn't boot anymore.
>
> I'm guessing it has more to do with the coreboot rom than with the flashing
> procedure but I'd like to know if you had an idea to what could have caused
> this failure ?
>
> To flash the MB I used the following command :
>
> $ sudo flashrom -p internal -w <mycorebootrom>
>
> It successfully flashed a chip (ST something) which is a removable chip on
> the motherboard. So with this success I decided to reboot the computer but
> then nothing, screen stays black, no beeping, no keyboard light, only the
> hard drive led stays on permanently
>
> What I tested :
> I unplugged everything, FDD, HDD, cdrom drive, usb internal connectors, I
> only let inside the graphic card (a PCI-E Nvidia GF 6600GT) and a stick of
> RAM
>
> I tested with another PCI-E Nvidia card (I don't have any other brand to
> test with) and with multiple combination of RAM sticks (1, 2 sticks, dual
> channel slots or not, 512 MB and 2 GB)
>
> Now the only thing I could try I guess is remove the ST chip and flash it
> with an external programmer ? I backed up the original MB rom before
> flashing.
>
> I hope you'll have an idea on what went wrong, if not my next stop will be
> the coreboot team :)
>
> Anyway thanks a lot for your great work !
>
> Best regards,
> Pierre
>

If there was no errors during erase/write, the boot problem is most
certainly within updated code itself. Could you check coreboot`s
output with nullmodem cable? Due to potential initalization slowdown
SeaBIOS is not built with debug logging by default, but it would be at
least clear if coreboot initialization does make its way up to payload
or not.