Did you set the following in your config file --> CONFIG_LEGACY_UART_MODE=y

Also have you setup all the proper fsp/ucode binaries that are commented out in the config file (just did a quick review):

#Sample settings for Denverton-NS FSP.
#CONFIG_ADD_FSP_BINARIES=y
#CONFIG_FSP_M_FILE="../intel/fsp/denverton_ns/DENVERTON-NS_FSP_M.fd"
#CONFIG_FSP_S_FILE="../intel/fsp/denverton_ns/DENVERTON-NS_FSP_S.fd"
#CONFIG_FSP_T_FILE="../intel/fsp/denverton_ns/DENVERTON-NS_FSP_T.fd"
#CONFIG_FSP_CAR=y

#Sample settings for microcode definitions.
#CONFIG_CPU_MICROCODE_HEADER_FILES="../intel/cpu/denverton_ns/microcode/microcode_blob.h"
#CONFIG_CPU_MICROCODE_CBFS_EXTERNAL_HEADER=y

Unfortunately all my harcuvar work has also been on a fairly old tree of coreboot.

I'll give it a try on my Harcuvar if you don't make any progress, but it won't be until the weekend.
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