diff --git a/firmware/fw_payload.S b/firmware/fw_payload.S
index c53a3bb0..3c8433ea 100644
--- a/firmware/fw_payload.S
+++ b/firmware/fw_payload.S
@@ -46,6 +46,10 @@ fw_save_info:
 fw_next_arg1:
 #ifdef FW_PAYLOAD_FDT_ADDR
 	li	a0, FW_PAYLOAD_FDT_ADDR
+#elif defined(FW_PAYLOAD_FDT_OFFSET)
+	lla	a0, _fw_start
+	li	a1, FW_PAYLOAD_FDT_OFFSET
+	add	a0, a0, a1
 #else
 	add	a0, a1, zero
 #endif
diff --git a/firmware/objects.mk b/firmware/objects.mk
index fef090a4..3ae0a28f 100644
--- a/firmware/objects.mk
+++ b/firmware/objects.mk
@@ -65,6 +65,9 @@ ifdef FW_PAYLOAD_ALIGN
 firmware-genflags-$(FW_PAYLOAD) += -DFW_PAYLOAD_ALIGN=$(FW_PAYLOAD_ALIGN)
 endif
 
+ifdef FW_PAYLOAD_FDT_OFFSET
+firmware-genflags-$(FW_PAYLOAD) += -DFW_PAYLOAD_FDT_OFFSET=$(FW_PAYLOAD_FDT_OFFSET)
+endif
 ifdef FW_PAYLOAD_FDT_ADDR
 firmware-genflags-$(FW_PAYLOAD) += -DFW_PAYLOAD_FDT_ADDR=$(FW_PAYLOAD_FDT_ADDR)
 endif