diff --git a/core/soong_config.mk b/core/soong_config.mk
index c0641de..83ca2cc 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -425,6 +425,21 @@
   $(call add_json_str, BoardExt4ShareDupBlocks, $(BOARD_EXT4_SHARE_DUP_BLOCKS))
   $(call add_json_str, BoardFlashLogicalBlockSize, $(BOARD_FLASH_LOGICAL_BLOCK_SIZE))
   $(call add_json_str, BoardFlashEraseBlockSize, $(BOARD_FLASH_ERASE_BLOCK_SIZE))
+  $(call add_json_bool, BuildingVbmetaImage, $(BUILDING_VBMETA_IMAGE))
+  $(call add_json_bool, BoardAvbEnable, $(filter true,$(BOARD_AVB_ENABLE)))
+  $(call add_json_str, BoardAvbAlgorithm, $(BOARD_AVB_ALGORITHM))
+  $(call add_json_str, BoardAvbKeyPath, $(BOARD_AVB_KEY_PATH))
+  $(call add_json_str, BoardAvbRollbackIndex, $(BOARD_AVB_ROLLBACK_INDEX))
+  $(call add_json_map, ChainedVbmetaPartitions)
+  $(foreach partition,system vendor $(BOARD_AVB_VBMETA_CUSTOM_PARTITIONS),\
+    $(call add_json_map, $(partition)) \
+      $(call add_json_list,Partitions,$(BOARD_AVB_VBMETA_$(call to-upper,$(partition)))) \
+      $(call add_json_str,Key,$(BOARD_AVB_VBMETA_$(call to-upper,$(partition))_KEY_PATH)) \
+      $(call add_json_str,Algorithm,$(BOARD_AVB_VBMETA_$(call to-upper,$(partition))_ALGORITHM)) \
+      $(call add_json_str,RollbackIndex,$(BOARD_AVB_VBMETA_$(call to-upper,$(partition))_ROLLBACK_INDEX)) \
+      $(call add_json_str,RollbackIndexLocation,$(BOARD_AVB_VBMETA_$(call to-upper,$(partition))_ROLLBACK_INDEX_LOCATION)) \
+    $(call end_json_map))
+  $(call end_json_map)
 
   $(call add_json_bool, BoardUsesRecoveryAsBoot, $(filter true,$(BOARD_USES_RECOVERY_AS_BOOT)))
   $(call add_json_bool, ProductUseDynamicPartitionSize, $(filter true,$(PRODUCT_USE_DYNAMIC_PARTITION_SIZE)))