diff --git a/config/Android.bp b/config/Android.bp
index 58a4f3c..a9449cc 100644
--- a/config/Android.bp
+++ b/config/Android.bp
@@ -213,6 +213,23 @@
 }
 
 soong_config_module_type {
+    name: "gralloc_handle_custom_content_md_reserved_size",
+    module_type: "cc_defaults",
+    config_namespace: "omniGlobalVars",
+    bool_variables: ["gralloc_handle_has_custom_content_md_reserved_size"],
+    properties: ["export_cflags"],
+}
+
+gralloc_handle_custom_content_md_reserved_size {
+    name: "gralloc_handle_has_custom_content_md_reserved_size_defaults",
+    soong_config_variables: {
+        gralloc_handle_has_custom_content_md_reserved_size: {
+            export_cflags: ["-DGRALLOC_HANDLE_HAS_CUSTOM_CONTENT_MD_RESERVED_SIZE"],
+        },
+    },
+}
+
+soong_config_module_type {
     name: "gralloc_10_usage_bits",
     module_type: "cc_defaults",
     config_namespace: "omniGlobalVars",
diff --git a/config/BoardConfigSoong.mk b/config/BoardConfigSoong.mk
index 4a27aa6..cff1700 100644
--- a/config/BoardConfigSoong.mk
+++ b/config/BoardConfigSoong.mk
@@ -30,6 +30,7 @@
     target_create_device_symlinks \
     target_init_vendor_lib \
     target_surfaceflinger_udfps_lib \
+    gralloc_handle_has_custom_content_md_reserved_size \
     gralloc_handle_has_reserved_size \
     healthd_use_battery_info \
     healthd_enable_op_fastchg \
@@ -54,6 +55,7 @@
 SOONG_CONFIG_omniQcomVars_supports_hw_fde := $(TARGET_HW_DISK_ENCRYPTION)
 SOONG_CONFIG_omniQcomVars_supports_hw_fde_perf := $(TARGET_HW_DISK_ENCRYPTION_PERF)
 SOONG_CONFIG_omniGlobalVars_aapt_version_code := $(shell date -u +%Y%m%d)
+SOONG_CONFIG_omniGlobalVars_gralloc_handle_has_custom_content_md_reserved_size := $(TARGET_GRALLOC_HANDLE_HAS_CUSTOM_CONTENT_MD_RESERVED_SIZE)
 SOONG_CONFIG_omniGlobalVars_gralloc_handle_has_reserved_size := $(TARGET_GRALLOC_HANDLE_HAS_RESERVED_SIZE)
 SOONG_CONFIG_omniGlobalVars_healthd_use_battery_info := $(HEALTHD_USE_BATTERY_INFO)
 SOONG_CONFIG_omniGlobalVars_healthd_enable_op_fastchg := $(HEALTHD_ENABLE_OP_FASTCHG_CHECK)
@@ -72,6 +74,7 @@
 endif
 TARGET_INIT_VENDOR_LIB ?= vendor_init
 TARGET_SURFACEFLINGER_UDFPS_LIB ?= surfaceflinger_udfps_lib
+TARGET_GRALLOC_HANDLE_HAS_CUSTOM_CONTENT_MD_RESERVED_SIZE ?= false
 TARGET_GRALLOC_HANDLE_HAS_RESERVED_SIZE ?= false
 
 SOONG_CONFIG_omniGlobalVars_launcher3Gapps ?= false