Hi Frans, Thanks for confirming.
Hi Angel, I was unable to get any serial output, even with early serial configured. Z77 power on defaults will see port 80 decoded by LPC according to their datasheet, and I found Asus actually included with some boards a POST card that plugs into the TPM header, so I'm on the right track. Now to see if I can implement the LPC protocol correctly on an Arduino Due, chosen for its 84MHz clock and 3.3v operation. I looked at the source and only see the CONFIG_POST_DEVICE_* options used by sb/amd/*/hudson, not by any Intel platform code. I then looked at the datasheet and the lspci dump with OEM BIOS. I would need to do something to device 0x1e.0 (disabled!) and 0x1c.6 (PCIe root port 6) and I would need new code that connects to CONFIG_POST_DEVICE_*. I will be back with more questions, so bear with me. Thanks Keith On Fri, Feb 28, 2020 at 4:54 AM Frans Hendriks <fhendr...@eltan.com> wrote: > > Hi Keith, > > PCI-to-PCI bridge need to be configured before you can use PCI POST card. > > Default post code are send out to port 80h. > Depending on the chipset (and your needs) you need to enable the port80 to > the right channel PCI/LPC. > > Best regards, > Frans Hendriks > Eltan B.V. > > -----Original Message----- > From: Angel Pons [mailto:th3fan...@gmail.com] > Sent: vrijdag 28 februari 2020 10:30 > To: Keith Hui <buu...@gmail.com> > Cc: coreboot <coreboot@coreboot.org> > Subject: [coreboot] Re: Still need assistance porting to ASUS P8Z77-M > > 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 > > _______________________________________________ > > coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an > > email to coreboot-le...@coreboot.org > > Best regards, > > Angel Pons > _______________________________________________ > coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an email > to coreboot-le...@coreboot.org > > > > _______________________________________________ coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an email to coreboot-le...@coreboot.org
