diff --git a/src/mainboard/google/dedede/Kconfig b/src/mainboard/google/dedede/Kconfig
index bd7d36e0fc..e1b713677d 100644
--- a/src/mainboard/google/dedede/Kconfig
+++ b/src/mainboard/google/dedede/Kconfig
@@ -37,6 +37,7 @@ config CHROMEOS
 	bool
 	default y
 	select CHROMEOS_CSE_BOARD_RESET_OVERRIDE
+	select CHROMEOS_DRAM_PART_NUMBER_IN_CBI
 	select EC_GOOGLE_CHROMEEC_SWITCHES
 	select GBB_FLAG_FORCE_DEV_SWITCH_ON
 	select GBB_FLAG_FORCE_DEV_BOOT_USB
diff --git a/src/mainboard/google/dedede/romstage.c b/src/mainboard/google/dedede/romstage.c
index e143f700cd..02ebfac426 100644
--- a/src/mainboard/google/dedede/romstage.c
+++ b/src/mainboard/google/dedede/romstage.c
@@ -21,16 +21,3 @@ void mainboard_memory_init_params(FSPM_UPD *memupd)
 
 	memcfg_init(&memupd->FspmConfig, board_cfg, &spd_info, half_populated);
 }
-
-const char *mainboard_get_dram_part_num(void)
-{
-	static char part_num_store[DIMM_INFO_PART_NUMBER_SIZE];
-
-	if (google_chromeec_cbi_get_dram_part_num(&part_num_store[0],
-					sizeof(part_num_store)) < 0) {
-		printk(BIOS_ERR, "No DRAM part number in CBI!\n");
-		return NULL;
-	}
-
-	return part_num_store;
-}
diff --git a/src/mainboard/google/hatch/Kconfig b/src/mainboard/google/hatch/Kconfig
index ecf156f266..257ad77a42 100644
--- a/src/mainboard/google/hatch/Kconfig
+++ b/src/mainboard/google/hatch/Kconfig
@@ -47,6 +47,7 @@ if BOARD_GOOGLE_HATCH_COMMON
 config CHROMEOS
 	bool
 	default y
+	select CHROMEOS_DRAM_PART_NUMBER_IN_CBI if !ROMSTAGE_SPD_SMBUS
 	select EC_GOOGLE_CHROMEEC_SWITCHES
 	select GBB_FLAG_FORCE_DEV_SWITCH_ON
 	select GBB_FLAG_FORCE_DEV_BOOT_USB
diff --git a/src/mainboard/google/hatch/romstage_spd_cbfs.c b/src/mainboard/google/hatch/romstage_spd_cbfs.c
index b8937de91b..f3c38bbf4f 100644
--- a/src/mainboard/google/hatch/romstage_spd_cbfs.c
+++ b/src/mainboard/google/hatch/romstage_spd_cbfs.c
@@ -56,28 +56,3 @@ void mainboard_memory_init_params(FSPM_UPD *memupd)
 
 	cannonlake_memcfg_init(&memupd->FspmConfig, &memcfg);
 }
-
-const char *mainboard_get_dram_part_num(void)
-{
-	static char part_num_store[DIMM_INFO_PART_NUMBER_SIZE];
-	static enum {
-		PART_NUM_NOT_READ,
-		PART_NUM_AVAILABLE,
-		PART_NUM_NOT_IN_CBI,
-	} part_num_state = PART_NUM_NOT_READ;
-
-	if (part_num_state == PART_NUM_NOT_READ) {
-		if (google_chromeec_cbi_get_dram_part_num(&part_num_store[0],
-						sizeof(part_num_store)) < 0) {
-			printk(BIOS_ERR, "No DRAM part number in CBI!\n");
-			part_num_state = PART_NUM_NOT_IN_CBI;
-		} else {
-			part_num_state = PART_NUM_AVAILABLE;
-		}
-	}
-
-	if (part_num_state == PART_NUM_NOT_IN_CBI)
-		return NULL;
-
-	return part_num_store;
-}
diff --git a/src/mainboard/google/volteer/Kconfig b/src/mainboard/google/volteer/Kconfig
index f32b54a609..58ff4eb270 100644
--- a/src/mainboard/google/volteer/Kconfig
+++ b/src/mainboard/google/volteer/Kconfig
@@ -35,6 +35,7 @@ config CHROMEOS
 	bool
 	default y
 	select CHROMEOS_CSE_BOARD_RESET_OVERRIDE if SOC_INTEL_CSE_LITE_SKU
+	select CHROMEOS_DRAM_PART_NUMBER_IN_CBI
 	select EC_GOOGLE_CHROMEEC_SWITCHES
 	select GBB_FLAG_FORCE_DEV_SWITCH_ON
 	select GBB_FLAG_FORCE_DEV_BOOT_USB
diff --git a/src/mainboard/google/volteer/romstage.c b/src/mainboard/google/volteer/romstage.c
index 51a4ebc75d..720ab7f3a1 100644
--- a/src/mainboard/google/volteer/romstage.c
+++ b/src/mainboard/google/volteer/romstage.c
@@ -28,15 +28,3 @@ void mainboard_memory_init_params(FSPM_UPD *mupd)
 
 	meminit_ddr(mem_cfg, board_cfg, &spd_info, half_populated);
 }
-
-const char *mainboard_get_dram_part_num(void)
-{
-	static char part_num_store[DIMM_INFO_PART_NUMBER_SIZE];
-
-	if (google_chromeec_cbi_get_dram_part_num(part_num_store,
-			sizeof(part_num_store)) < 0) {
-		printk(BIOS_ERR, "ERROR: Couldn't obtain DRAM part number from CBI\n");
-		return NULL;
-	}
-	return part_num_store;
-}