diff --git a/src/soc/intel/apollolake/chip.c b/src/soc/intel/apollolake/chip.c
index 40316a203d..bab39bb4b6 100644
--- a/src/soc/intel/apollolake/chip.c
+++ b/src/soc/intel/apollolake/chip.c
@@ -615,6 +615,11 @@ static void glk_fsp_silicon_init_params_cb(
 	 * Options to adjust PMIC Vdd2 voltage.
 	 */
 	silconfig->PmicVdd2Voltage = cfg->PmicVdd2Voltage;
+
+	/* FSP should let coreboot set subsystem IDs, which are read/write-once */
+	silconfig->SiSVID = 0;
+	silconfig->SiSSID = 0;
+	silconfig->HgSubSystemId = 0;
 #endif
 }
 
@@ -724,6 +729,10 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *silupd)
 	bool use_8254 = get_uint_option("legacy_8254_timer", CONFIG(USE_LEGACY_8254_TIMER));
 	silconfig->Timer8254ClkSetting = use_8254;
 
+	/* FSP should let coreboot set subsystem IDs, which are read/write-once */
+	silconfig->SubSystemVendorId = 0;
+	silconfig->SubSystemId = 0;
+
 	mainboard_silicon_init_params(silconfig);
 }