diff --git a/build/soong/Android.bp b/build/soong/Android.bp
index 01e9cc3a..74adabe2 100644
--- a/build/soong/Android.bp
+++ b/build/soong/Android.bp
@@ -88,6 +88,23 @@ gralloc_10_usage_bits {
     },
 }
 
+soong_config_module_type {
+    name: "gralloc_handle_custom_content_md_reserved_size",
+    module_type: "cc_defaults",
+    config_namespace: "lineageGlobalVars",
+    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_handle_reserved_size",
     module_type: "cc_defaults",
diff --git a/config/BoardConfigSoong.mk b/config/BoardConfigSoong.mk
index 8061220b..426da64b 100644
--- a/config/BoardConfigSoong.mk
+++ b/config/BoardConfigSoong.mk
@@ -31,6 +31,7 @@ SOONG_CONFIG_lineageGlobalVars += \
     aapt_version_code \
     additional_gralloc_10_usage_bits \
     bootloader_message_offset \
+    gralloc_handle_has_custom_content_md_reserved_size \
     gralloc_handle_has_reserved_size \
     target_health_charging_control_charging_path \
     target_health_charging_control_charging_enabled \
@@ -63,6 +64,7 @@ SOONG_CONFIG_lineageQcomVars += \
 endif
 
 # Soong bool variables
+SOONG_CONFIG_lineageGlobalVars_gralloc_handle_has_custom_content_md_reserved_size := $(TARGET_GRALLOC_HANDLE_HAS_CUSTOM_CONTENT_MD_RESERVED_SIZE)
 SOONG_CONFIG_lineageGlobalVars_gralloc_handle_has_reserved_size := $(TARGET_GRALLOC_HANDLE_HAS_RESERVED_SIZE)
 SOONG_CONFIG_lineageGlobalVars_uses_egl_display_array := $(TARGET_USES_EGL_DISPLAY_ARRAY)
 SOONG_CONFIG_lineageNvidiaVars_uses_nvidia_enhancements := $(NV_ANDROID_FRAMEWORK_ENHANCEMENTS)
@@ -72,6 +74,7 @@ SOONG_CONFIG_lineageQcomVars_uses_pre_uplink_features_netmgrd := $(TARGET_USES_P
 # Set default values
 BOOTLOADER_MESSAGE_OFFSET ?= 0
 TARGET_ADDITIONAL_GRALLOC_10_USAGE_BITS ?= 0
+TARGET_GRALLOC_HANDLE_HAS_CUSTOM_CONTENT_MD_RESERVED_SIZE ?= false
 TARGET_GRALLOC_HANDLE_HAS_RESERVED_SIZE ?= false
 TARGET_HEALTH_CHARGING_CONTROL_CHARGING_ENABLED ?= 1
 TARGET_HEALTH_CHARGING_CONTROL_CHARGING_DISABLED ?= 0