diff --git a/target/board/BoardConfigGsiCommon.mk b/target/board/BoardConfigGsiCommon.mk
index 0f36aae..d0aeb1c 100644
--- a/target/board/BoardConfigGsiCommon.mk
+++ b/target/board/BoardConfigGsiCommon.mk
@@ -33,12 +33,25 @@
 #   updating the last seen rollback index in the tamper-evident storage.
 BOARD_AVB_ROLLBACK_INDEX := 0
 
-# Enable chain partition for system.
-# GSI need to sign on system.img instead of vbmeta.
+ifndef BUILDING_GSI
+# Enable AVB chained partition for system.
+# https://android.googlesource.com/platform/external/avb/+/master/README.md
 BOARD_AVB_SYSTEM_KEY_PATH := external/avb/test/data/testkey_rsa2048.pem
 BOARD_AVB_SYSTEM_ALGORITHM := SHA256_RSA2048
 BOARD_AVB_SYSTEM_ROLLBACK_INDEX := $(PLATFORM_SECURITY_PATCH_TIMESTAMP)
 BOARD_AVB_SYSTEM_ROLLBACK_INDEX_LOCATION := 1
+else
+# Enable vbmeta_system on GSI targets
+BOARD_AVB_VBMETA_SYSTEM := system
+BOARD_AVB_VBMETA_SYSTEM_KEY_PATH := external/avb/test/data/testkey_rsa2048.pem
+BOARD_AVB_VBMETA_SYSTEM_ALGORITHM := SHA256_RSA2048
+BOARD_AVB_VBMETA_SYSTEM_ROLLBACK_INDEX := $(PLATFORM_SECURITY_PATCH_TIMESTAMP)
+BOARD_AVB_VBMETA_SYSTEM_ROLLBACK_INDEX_LOCATION := 1
+BOARD_SUPER_PARTITION_SIZE := 3229614080
+BOARD_SUPER_PARTITION_GROUPS := gsi_dynamic_partitions
+BOARD_GSI_DYNAMIC_PARTITIONS_PARTITION_LIST := system
+BOARD_GSI_DYNAMIC_PARTITIONS_SIZE := 3221225472
+endif
 
 # Enable chain partition for boot, mainly for GKI images.
 BOARD_AVB_BOOT_KEY_PATH := external/avb/test/data/testkey_rsa2048.pem
diff --git a/target/board/generic/BoardConfig.mk b/target/board/generic/BoardConfig.mk
index 8624ed7..87c16da 100644
--- a/target/board/generic/BoardConfig.mk
+++ b/target/board/generic/BoardConfig.mk
@@ -30,6 +30,8 @@
 TARGET_CPU_ABI2 := armeabi
 
 include build/make/target/board/BoardConfigGsiCommon.mk
+
+ifndef BUILDING_GSI
 include build/make/target/board/BoardConfigEmuCommon.mk
 
 BOARD_USERDATAIMAGE_PARTITION_SIZE := 576716800
@@ -44,3 +46,4 @@
 WIFI_DRIVER_FW_PATH_PARAM   := "/dev/null"
 WIFI_DRIVER_FW_PATH_STA     := "/dev/null"
 WIFI_DRIVER_FW_PATH_AP      := "/dev/null"
+endif
diff --git a/target/board/generic_x86/BoardConfig.mk b/target/board/generic_x86/BoardConfig.mk
index 83d7ecc..c40c15b 100644
--- a/target/board/generic_x86/BoardConfig.mk
+++ b/target/board/generic_x86/BoardConfig.mk
@@ -21,6 +21,7 @@
 TARGET_PRELINK_MODULE := false
 
 include build/make/target/board/BoardConfigGsiCommon.mk
+ifndef BUILDING_GSI
 include build/make/target/board/BoardConfigEmuCommon.mk
 
 # Resize to 4G to accomodate ASAN and CTS
@@ -38,3 +39,4 @@
 WIFI_DRIVER_FW_PATH_PARAM   := "/dev/null"
 WIFI_DRIVER_FW_PATH_STA     := "/dev/null"
 WIFI_DRIVER_FW_PATH_AP      := "/dev/null"
+endif
diff --git a/target/board/generic_x86_64/BoardConfig.mk b/target/board/generic_x86_64/BoardConfig.mk
index 07bbc07..660ec6e 100755
--- a/target/board/generic_x86_64/BoardConfig.mk
+++ b/target/board/generic_x86_64/BoardConfig.mk
@@ -24,6 +24,7 @@
 
 TARGET_PRELINK_MODULE := false
 include build/make/target/board/BoardConfigGsiCommon.mk
+ifndef BUILDING_GSI
 include build/make/target/board/BoardConfigEmuCommon.mk
 
 BOARD_USERDATAIMAGE_PARTITION_SIZE := 576716800
@@ -40,3 +41,4 @@
 WIFI_DRIVER_FW_PATH_PARAM   := "/dev/null"
 WIFI_DRIVER_FW_PATH_STA     := "/dev/null"
 WIFI_DRIVER_FW_PATH_AP      := "/dev/null"
+endif
diff --git a/target/product/gsi_release.mk b/target/product/gsi_release.mk
index a61585e..5421ee0 100644
--- a/target/product/gsi_release.mk
+++ b/target/product/gsi_release.mk
@@ -24,6 +24,8 @@
 # - etc.
 #
 
+BUILDING_GSI := true
+
 # Exclude all files under system/product and system/system_ext
 PRODUCT_ARTIFACT_PATH_REQUIREMENT_ALLOWED_LIST += \
     system/product/% \