Dear all, I have been investigating booting my X201 on two axes:
- Coreboot vs stock BIOS - Intel Management Engine left alone vs neutralised with me_cleaner. Of the four quadrants created by those two axes, only one quadrant does not work: Coreboot + neutralised ME: - Stock BIOS: boots fine. - Stock BIOS, neutralised: doesn't boot boots fine after a delay of <1 minute. - Coreboot with SeaBIOS payload, based on descriptor & ME regions from stock BIOS: boots fine. - Coreboot with SeaBIOS payload, based on descriptor & ME regions from neutralised BIOS: **doesn't boot**. See additional details here, including the output of intelmetool: https://github.com/corna/me_cleaner/issues/24 . Nicola Corna pointed out to me that adding a timeout at https://github.com/coreboot/coreboot/blob/master/src/northbridge/intel/nehalem/raminit.c#L1756 might solve this problem. (I guess the idea is that instead of waiting indefinitely for the ME to load, Coreboot should instead just wait for a defined amount of time and then plough on regardless.) I am not a C programmer, so am not competent to add that timeout. Please can anyone here provide a suitable patch for me to test, or failing that, point me to a similar timeout in another architecture's raminit that I might use as a starting point? Thanks, Sam -- coreboot mailing list: [email protected] https://www.coreboot.org/mailman/listinfo/coreboot
