src/mainboard/google/octopus/variants/bloog/Makefile.inc - coreboot - Gitiles

 bootblock-y += gpio.c

 romstage-y += gpio.c

 ramstage-y += gpio.c
 ramstage-y += variant.c

 $(call add_vbt_to_cbfs, vbt_blooguard.bin, blooguard-data.vbt)
	bootblock-y += gpio.c

	romstage-y += gpio.c

	ramstage-y += gpio.c
	ramstage-y += variant.c

	$(call add_vbt_to_cbfs, vbt_blooguard.bin, blooguard-data.vbt)