Hi Furquan, > Do you know the microcode version that you are using? There was an > issue with the older versions that caused a hang during NEM setup. As > per the commit message in > https://review.coreboot.org/c/coreboot/+/45094, it looks like you need > 0x56 or newer microcode for enhanced NEM to work. > > A quick way to verify if it is the microcode version issue: Select > INTEL_CAR_NEM instead of INTEL_CAR_NEM_ENHANCED for your board and see > if it gets any further in the boot. > I have tried a few microcodes: - the one shipped originally with RVP platform is CpuSignature: 000806C0h, Revision: 00000064h, Date: 02.03.2020 so the revision is newer that 0x56. - also tried from TGL_BIOS_ww51_2020 BIOS images which has 4 blobs: CpuSignature: 000806D1h, Revision: 00000008h, Date: 30.11.2020 CpuSignature: 000806D0h, Revision: 0000004Eh, Date: 01.12.2020 CpuSignature: 000806C1h, Revision: 00000072h, Date: 20.11.2020 CpuSignature: 000806C2h, Revision: 00000002h, Date: 04.12.2020
It seems it have different steppings, so don't know if it really works. I will try to select INTEL_CAR_NEM with any of these. Thank you for the insights. Best regards, -- Michał Żygowski Firmware Engineer https://3mdeb.com | @3mdeb_com _______________________________________________ coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an email to coreboot-le...@coreboot.org
