Vendorcode always does PCI MMCONF access once it is enabled via MSR. In coreboot proper, we don't give opportunity to make pci_read/write calls before PCI MMCONF is enabled via MSR. This happens early in romstage amd_initmmio() for all cores. Change-Id: If31bc0a67b480bcc1d955632f413f5cdeec51a54 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/17533 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>