diff --git a/plat/cpm/libsys/asm.h b/plat/cpm/libsys/asm.h
new file mode 100644
index 000000000..f86b91104
--- /dev/null
+++ b/plat/cpm/libsys/asm.h
@@ -0,0 +1,13 @@
+#ifndef ASM_H
+#define ASM_H
+
+! Declare segments (the order is important).
+
+.sect .text
+.sect .rom
+.sect .data
+.sect .bss
+
+.sect .text
+
+#endif