Am Tue, Sep 07, 2021 at 03:29:55PM -0400 schrieb Benjamin Doron: > Hi, > The return value 0x80000007 is EFI_DEVICE_ERROR, which is unfortunately for > us, not very specific.
Thank you very much, your detailed commentary enabled me to work trough the issue. > The schematics will be a big help to you, if you can get them. However, you > can probably manage without them. It seems some schematics are available commercially, but I tried to avoid that. > The relevant modules for setting FSP-M configuration are > BoardConfigInitPreMem and possibly PlatformInitPreMem. Since the RCOMP [...] It seems the Acer board is indeed following the Intel reference implementation very closely. I wrote a small table of possible values, the ones you extracted and some others I found be hexdumping the PE file, and iterated over them in a bootloop, but always got the same DEVICE_ERROR. Only after applying the Dq(s)Mapping (DqByteMapChX, DqsMapCpu2DramChX) from the Intel reference KabyLake board the result was FSP_SUCCESS! > By the way, according to the code you also may have an (unpopulated) SPD at > 0x50 (0xA0 in the code, this is just because the SMBUS address was shifted > 1 bit left into the 8-bit address form. They are equivalent). Corrected. > You also may need to set CaVrefConfig. "2" should be the correct value for > DDR4. You should probably check that DqPinsInterleaved is correct, it's > easiest if you can get this from the schematics. Corrected (it was 0). So that is already a good result. The Laptop booted right up through SeaBIOS into Linux. Now the task is to fix the ACPI / PCI configuration. Obviously a lot of devices on PCI / SMBUS are still missing. The devicetree I can figure my way around, and hack together a basic one that enables all necessary ports and devices, I guess. But I am a bit lost regarding the ACPI tables. What is necessary, and is there a way to read the vendor tables and use them? > Best regards, > Benjamin Thanks again, Andreas _______________________________________________ coreboot mailing list -- [email protected] To unsubscribe send an email to [email protected]
