[coreboot-gerrit] Change in coreboot[master]: soc/intel/car: Add support for bootguard CAR

[Michael Niewöhner (Code Review)]

Michael Niewöhner has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/36682 )

Change subject: soc/intel/car: Add support for bootguard CAR
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Patch Set 6:
> Patch Set 6:
> > Patch Set 6:
> >
> > @Gaggery any new results?
>
> It stuck at bootblock_pch_early_init -> gspi_early_bar_init -> gspi_get_cfg -> config_of_soc -> config_of -> pcidev_on_root -> pcidev_path_on_root -> pci_path_behind -> find_dev_path -> path_eq. It's an interesting location where it was stuck. Need some more time to debug. Welcome for suggestion. I tried to disable PBE timer by directly writing 0x1 to MSR 0x139 but it was hung at wrmsr.

gspi_early_bar_init is not called from bootblock_pch_early_init but from bootblock_soc_init, while bootblock_pch_early_init is called from bootblock_soc_early_init.
In both cases that'd mean that CAR is not reached