On Fri, May 17, 2019 at 6:02 PM <[email protected]> wrote: > > There is a Lanner FW-7573 platform based on the Intel Rangeley Atom C2000 > series processor. > To work with the Serial port in this platform, the NUVOTON NCT6776F chip is > connected via the LPC bus to the processor. > I just can’t get Serial port working for debuging. I take as a basis intel > littleplains board. I tried to add NCT6776F support following the example of > other boards - without success. There is no output to the console, and in > Linux, the superiotool program does not see the NCT6776F.
Check the datasheets for PCI 0:1f.0 register LPC_EN (or search for 0x4e). Might be register 0x82 but I don't know for sure for Rangeley. I did not notice any code that would enable routing 4e/4f to LPC bus under southbridge/fsp_rangely or mainboard/littleplains. > On the official version of the BIOS I loaded linux OS and took a dump. > (superiotool r => Found Nuvoton NCT6776F/D (C) (id=0xc333) at 0x4e) ) You can also compare the register banks of PCI 0:1f.0. HTH, Kyösti _______________________________________________ coreboot mailing list -- [email protected] To unsubscribe send an email to [email protected]
