diff --git a/include/mem-map.h b/include/mem-map.h
index 4d06b64b9396..e75bd4e618ea 100644
--- a/include/mem-map.h
+++ b/include/mem-map.h
@@ -36,12 +36,16 @@
  */
 #define PROCIN_OFF		(SPIRA_OFF + 0x800)
 
-/* Initial MDST table like PROCIN, we need fixed addresses,
+/* Initial MDST and MDDT tables like PROCIN, we need fixed addresses,
  * we leave a 2k gap for PROCIN
  */
 #define MDST_TABLE_OFF		(SPIRA_OFF + 0x1000)
+#define MDST_TABLE_SIZE		0x400
 
-/* Like MDST, we need fixed address for CPU control header.
+#define MDDT_TABLE_OFF		(SPIRA_OFF + 0x1400)
+#define MDDT_TABLE_SIZE		0x400
+
+/* Like MDST and MDDT, we need fixed address for CPU control header.
  * We leave a 2k gap for MDST. CPU_CTL table is of size ~4k
  */
 #define CPU_CTL_OFF             (SPIRA_OFF + 0x1800)
diff --git a/skiboot.lds.S b/skiboot.lds.S
index 477c06a5085c..67c58b307e7d 100644
--- a/skiboot.lds.S
+++ b/skiboot.lds.S
@@ -1,7 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
 /*
- * Skiboot linker script
- *
  * Copyright 2013-2019 IBM Corp.
  */
 
@@ -81,6 +79,11 @@ SECTIONS
 		KEEP(*(.mdst.data))
 	}
 
+	. = MDDT_TABLE_OFF;
+	.mddt : {
+		KEEP(*(.mddt.data))
+	}
+
 	. = CPU_CTL_OFF;
 	.cpuctrl : {
 		KEEP(*(.cpuctrl.data))