Hi Keith,

On Fri, Feb 28, 2020 at 7:18 AM Keith Hui <buu...@gmail.com> wrote:
>
> A week ago I wrote here about my problems trying to port coreboot to
> my board. Unfortunately I am still no closer to booting.
>
> In the meantime I flashed my new chip with my OEM firmware backup. It
> boots; then I flashed my patched IFD (for chip ID and flash unlock)
> and it still boots. So it's not chip compatibility or corrupted
> descriptor.
>
> The only sign of life I got is the bootblock banner left in the SPI
> console. My PCI POST card is showing nothing, but knowing that it sits
> on a PCIe-PCI bridge (ASM1063 that P8Z77M-PRO does not have) and not
> knowing if it needs software init to work, I am now trying to pull
> POST codes off the LPC bus over the TPM header, using an Arduino Due.
> Do I have to add some early init to have port 80 accesses sent to LPC
> bus for this to work?

You have to tell coreboot where to route LPC post codes to. It
defaults to "None", but you can choose PCI or LPC. I have never tried
to print post codes with coreboot, though. I would try using the
serial port though, as it is more practical for debugging than post
codes.

> Thanks for your help
> Keith
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Best regards,

Angel Pons
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