diff --git a/src/soc/intel/jasperlake/chip.h b/src/soc/intel/jasperlake/chip.h
index 408cdcfa46..380549451e 100644
--- a/src/soc/intel/jasperlake/chip.h
+++ b/src/soc/intel/jasperlake/chip.h
@@ -57,6 +57,36 @@ static const struct {
 	{ PCI_DID_INTEL_JSL_ID_6, JSL_N6005_10W_CORE, TDP_10W },
 };
 
+/* Gfx related */
+enum igd_dvmt50_pre_alloc {
+	IGD_SM_0MB = 0x00,
+	IGD_SM_32MB = 0x01,
+	IGD_SM_64MB = 0x02,
+	IGD_SM_96MB = 0x03,
+	IGD_SM_128MB = 0x04,
+	IGD_SM_160MB = 0x05,
+	IGD_SM_4MB = 0xF0,
+	IGD_SM_8MB = 0xF1,
+	IGD_SM_12MB = 0xF2,
+	IGD_SM_16MB = 0xF3,
+	IGD_SM_20MB = 0xF4,
+	IGD_SM_24MB = 0xF5,
+	IGD_SM_28MB = 0xF6,
+	IGD_SM_36MB = 0xF8,
+	IGD_SM_40MB = 0xF9,
+	IGD_SM_44MB = 0xFA,
+	IGD_SM_48MB = 0xFB,
+	IGD_SM_52MB = 0xFC,
+	IGD_SM_56MB = 0xFD,
+	IGD_SM_60MB = 0xFE,
+};
+
+enum igd_aperture_size {
+	IGD_AP_SZ_128MB = 0x00,
+	IGD_AP_SZ_256MB = 0x01,
+	IGD_AP_SZ_512MB = 0x02,
+};
+
 struct soc_intel_jasperlake_config {
 	/* Common struct containing soc config data required by common code */
 	struct soc_intel_common_config common_soc_config;
diff --git a/src/soc/intel/jasperlake/romstage/fsp_params.c b/src/soc/intel/jasperlake/romstage/fsp_params.c
index 5a06e12347..daa6754989 100644
--- a/src/soc/intel/jasperlake/romstage/fsp_params.c
+++ b/src/soc/intel/jasperlake/romstage/fsp_params.c
@@ -6,6 +6,7 @@
 #include <fsp/util.h>
 #include <intelblocks/cpulib.h>
 #include <intelblocks/pcie_rp.h>
+#include <option.h>
 #include <soc/iomap.h>
 #include <soc/pci_devs.h>
 #include <soc/pcie.h>
@@ -18,12 +19,16 @@ static void soc_memory_init_params(FSP_M_CONFIG *m_cfg,
 {
 	unsigned int i;
 
-	/*
-	 * If IGD is enabled, set IGD stolen size to 60MB.
-	 * Otherwise, skip IGD init in FSP.
-	 */
 	m_cfg->InternalGfx = !CONFIG(SOC_INTEL_DISABLE_IGD) && is_devfn_enabled(SA_DEVFN_IGD);
-	m_cfg->IgdDvmt50PreAlloc = m_cfg->InternalGfx ? 0xFE : 0;
+
+	if (m_cfg->InternalGfx) {
+		/* IGD is enabled, set IGD stolen size to 60MB. */
+		m_cfg->IgdDvmt50PreAlloc = get_uint_option("igd_dvmt_prealloc", IGD_SM_60MB);
+		m_cfg->ApertureSize = get_uint_option("igd_aperture_size", IGD_AP_SZ_256MB);
+	} else {
+		/* IGD is disabled, skip IGD init in FSP. */
+		m_cfg->IgdDvmt50PreAlloc = 0;
+	}
 
 	m_cfg->TsegSize = CONFIG_SMM_TSEG_SIZE;
 	m_cfg->SaGv = config->SaGv;