diff --git a/src/mainboard/system76/adl/board.fmd b/src/mainboard/system76/adl/board.fmd
index f50c357d91..4dab3c448f 100644
--- a/src/mainboard/system76/adl/board.fmd
+++ b/src/mainboard/system76/adl/board.fmd
@@ -6,7 +6,7 @@ FLASH 32M {
 	SI_ME 4824K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/meer9/variants/meer9/board.fmd b/src/mainboard/system76/meer9/variants/meer9/board.fmd
index 4713b67297..a5499a2daa 100644
--- a/src/mainboard/system76/meer9/variants/meer9/board.fmd
+++ b/src/mainboard/system76/meer9/variants/meer9/board.fmd
@@ -3,7 +3,7 @@ FLASH 32M {
 	SI_ME 10160K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/mtl/variants/darp10/board.fmd b/src/mainboard/system76/mtl/variants/darp10/board.fmd
index 8539c86e1e..c8f3fcea5e 100644
--- a/src/mainboard/system76/mtl/variants/darp10/board.fmd
+++ b/src/mainboard/system76/mtl/variants/darp10/board.fmd
@@ -4,7 +4,7 @@ FLASH 32M {
 	SI_ME 10640K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/mtl/variants/darp11/board.fmd b/src/mainboard/system76/mtl/variants/darp11/board.fmd
index 2b8860d67f..532555e030 100644
--- a/src/mainboard/system76/mtl/variants/darp11/board.fmd
+++ b/src/mainboard/system76/mtl/variants/darp11/board.fmd
@@ -4,7 +4,7 @@ FLASH 32M {
 	SI_ME 8612K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/mtl/variants/lemp13/board.fmd b/src/mainboard/system76/mtl/variants/lemp13/board.fmd
index 965e6bc319..4e3ba09c6c 100644
--- a/src/mainboard/system76/mtl/variants/lemp13/board.fmd
+++ b/src/mainboard/system76/mtl/variants/lemp13/board.fmd
@@ -3,7 +3,7 @@ FLASH 32M {
 	SI_ME 10128K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/rpl/variants/addw3/board.fmd b/src/mainboard/system76/rpl/variants/addw3/board.fmd
index 187263e5cc..451ca7aeef 100644
--- a/src/mainboard/system76/rpl/variants/addw3/board.fmd
+++ b/src/mainboard/system76/rpl/variants/addw3/board.fmd
@@ -4,7 +4,7 @@ FLASH 32M {
 	SI_ME 3944K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/rpl/variants/addw4/board.fmd b/src/mainboard/system76/rpl/variants/addw4/board.fmd
index b2615d1e17..9da2cbdf4f 100644
--- a/src/mainboard/system76/rpl/variants/addw4/board.fmd
+++ b/src/mainboard/system76/rpl/variants/addw4/board.fmd
@@ -3,7 +3,7 @@ FLASH 32M {
 	SI_ME 3944K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/rpl/variants/bonw15-b/board.fmd b/src/mainboard/system76/rpl/variants/bonw15-b/board.fmd
index b2615d1e17..9da2cbdf4f 100644
--- a/src/mainboard/system76/rpl/variants/bonw15-b/board.fmd
+++ b/src/mainboard/system76/rpl/variants/bonw15-b/board.fmd
@@ -3,7 +3,7 @@ FLASH 32M {
 	SI_ME 3944K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/rpl/variants/bonw15/board.fmd b/src/mainboard/system76/rpl/variants/bonw15/board.fmd
index b2615d1e17..9da2cbdf4f 100644
--- a/src/mainboard/system76/rpl/variants/bonw15/board.fmd
+++ b/src/mainboard/system76/rpl/variants/bonw15/board.fmd
@@ -3,7 +3,7 @@ FLASH 32M {
 	SI_ME 3944K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/rpl/variants/darp9/board.fmd b/src/mainboard/system76/rpl/variants/darp9/board.fmd
index fdf1ebdf52..dc4ac4685f 100644
--- a/src/mainboard/system76/rpl/variants/darp9/board.fmd
+++ b/src/mainboard/system76/rpl/variants/darp9/board.fmd
@@ -3,7 +3,7 @@ FLASH 32M {
 	SI_ME 4824K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/rpl/variants/galp7/board.fmd b/src/mainboard/system76/rpl/variants/galp7/board.fmd
index fdf1ebdf52..dc4ac4685f 100644
--- a/src/mainboard/system76/rpl/variants/galp7/board.fmd
+++ b/src/mainboard/system76/rpl/variants/galp7/board.fmd
@@ -3,7 +3,7 @@ FLASH 32M {
 	SI_ME 4824K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/rpl/variants/gaze18/board.fmd b/src/mainboard/system76/rpl/variants/gaze18/board.fmd
index fdf1ebdf52..dc4ac4685f 100644
--- a/src/mainboard/system76/rpl/variants/gaze18/board.fmd
+++ b/src/mainboard/system76/rpl/variants/gaze18/board.fmd
@@ -3,7 +3,7 @@ FLASH 32M {
 	SI_ME 4824K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/rpl/variants/gaze20/board.fmd b/src/mainboard/system76/rpl/variants/gaze20/board.fmd
index fdf1ebdf52..dc4ac4685f 100644
--- a/src/mainboard/system76/rpl/variants/gaze20/board.fmd
+++ b/src/mainboard/system76/rpl/variants/gaze20/board.fmd
@@ -3,7 +3,7 @@ FLASH 32M {
 	SI_ME 4824K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/rpl/variants/lemp12/board.fmd b/src/mainboard/system76/rpl/variants/lemp12/board.fmd
index fdf1ebdf52..dc4ac4685f 100644
--- a/src/mainboard/system76/rpl/variants/lemp12/board.fmd
+++ b/src/mainboard/system76/rpl/variants/lemp12/board.fmd
@@ -3,7 +3,7 @@ FLASH 32M {
 	SI_ME 4824K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/rpl/variants/oryp11/board.fmd b/src/mainboard/system76/rpl/variants/oryp11/board.fmd
index fdf1ebdf52..dc4ac4685f 100644
--- a/src/mainboard/system76/rpl/variants/oryp11/board.fmd
+++ b/src/mainboard/system76/rpl/variants/oryp11/board.fmd
@@ -3,7 +3,7 @@ FLASH 32M {
 	SI_ME 4824K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/rpl/variants/oryp12/board.fmd b/src/mainboard/system76/rpl/variants/oryp12/board.fmd
index b2615d1e17..9da2cbdf4f 100644
--- a/src/mainboard/system76/rpl/variants/oryp12/board.fmd
+++ b/src/mainboard/system76/rpl/variants/oryp12/board.fmd
@@ -3,7 +3,7 @@ FLASH 32M {
 	SI_ME 3944K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/rpl/variants/serw13/board.fmd b/src/mainboard/system76/rpl/variants/serw13/board.fmd
index b2615d1e17..9da2cbdf4f 100644
--- a/src/mainboard/system76/rpl/variants/serw13/board.fmd
+++ b/src/mainboard/system76/rpl/variants/serw13/board.fmd
@@ -3,7 +3,7 @@ FLASH 32M {
 	SI_ME 3944K
 	SI_BIOS@16M 16M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/tgl-h/board-gbe.fmd b/src/mainboard/system76/tgl-h/board-gbe.fmd
index 2bfb31c752..20d5a7fa01 100644
--- a/src/mainboard/system76/tgl-h/board-gbe.fmd
+++ b/src/mainboard/system76/tgl-h/board-gbe.fmd
@@ -4,7 +4,7 @@ FLASH 16M {
 	SI_ME 5108K
 	SI_BIOS 11M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/tgl-h/board.fmd b/src/mainboard/system76/tgl-h/board.fmd
index 6f3a0381d1..b656073c9d 100644
--- a/src/mainboard/system76/tgl-h/board.fmd
+++ b/src/mainboard/system76/tgl-h/board.fmd
@@ -3,7 +3,7 @@ FLASH 16M {
 	SI_ME 5116K
 	SI_BIOS 11M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)
diff --git a/src/mainboard/system76/tgl-u/board.fmd b/src/mainboard/system76/tgl-u/board.fmd
index 6f3a0381d1..b656073c9d 100644
--- a/src/mainboard/system76/tgl-u/board.fmd
+++ b/src/mainboard/system76/tgl-u/board.fmd
@@ -3,7 +3,7 @@ FLASH 16M {
 	SI_ME 5116K
 	SI_BIOS 11M {
 		RW_MRC_CACHE 64K
-		SMMSTORE(PRESERVE) 256K
+		SMMSTORE(PRESERVE) 512K
 		WP_RO {
 			FMAP 4K
 			COREBOOT(CBFS)