diff --git a/src/northbridge/intel/sandybridge/Makefile.inc b/src/northbridge/intel/sandybridge/Makefile.inc
index 7718bf9..11f1f15 100644
--- a/src/northbridge/intel/sandybridge/Makefile.inc
+++ b/src/northbridge/intel/sandybridge/Makefile.inc
@@ -36,6 +36,7 @@
 romstage-y += raminit_common.c
 romstage-y += raminit_sandy.c
 romstage-y += raminit_ivy.c
+romstage-y += raminit_tables.c
 romstage-y += ../../../device/dram/ddr3.c
 else
 romstage-y += raminit_mrc.c
diff --git a/src/northbridge/intel/sandybridge/raminit_common.c b/src/northbridge/intel/sandybridge/raminit_common.c
index e289070..9eb60c7 100644
--- a/src/northbridge/intel/sandybridge/raminit_common.c
+++ b/src/northbridge/intel/sandybridge/raminit_common.c
@@ -24,6 +24,7 @@
 
 #include "raminit_native.h"
 #include "raminit_common.h"
+#include "raminit_tables.h"
 #include "sandybridge.h"
 
 /* FIXME: no ECC support */
@@ -2100,8 +2101,6 @@
 	return lanes_ok != ((1 << NUM_LANES) - 1);
 }
 
-#include "raminit_patterns.h"
-
 static void fill_pattern5(ramctr_timing *ctrl, int channel, int patno)
 {
 	unsigned int i, j;
diff --git a/src/northbridge/intel/sandybridge/raminit_patterns.h b/src/northbridge/intel/sandybridge/raminit_tables.c
similarity index 97%
rename from src/northbridge/intel/sandybridge/raminit_patterns.h
rename to src/northbridge/intel/sandybridge/raminit_tables.c
index aa6c2dc..1ecba1b 100644
--- a/src/northbridge/intel/sandybridge/raminit_patterns.h
+++ b/src/northbridge/intel/sandybridge/raminit_tables.c
@@ -1,18 +1,7 @@
-/*
- * This file is part of the coreboot project.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
-#ifndef SANDYBRIDGE_RAMINIT_PATTERNS_H
-#define SANDYBRIDGE_RAMINIT_PATTERNS_H
+#include "raminit_tables.h"
 
 const u32 pattern[32][16] = {
 	{0x00000000, 0x00000000, 0xffffffff, 0xffffffff,
@@ -654,5 +643,3 @@
 	 0x88, 0xa4, 0x1c, 0xea, 0x11, 0x8c, 0xfb, 0xbe,
 	 0x70, 0x62, 0xec, 0x4e, 0x00, 0x56, 0x0e, 0xa9},
 };
-
-#endif /* SANDYBRIDGE_RAMINIT_PATTERNS_H */
diff --git a/src/northbridge/intel/sandybridge/raminit_tables.h b/src/northbridge/intel/sandybridge/raminit_tables.h
new file mode 100644
index 0000000..4e22555
--- /dev/null
+++ b/src/northbridge/intel/sandybridge/raminit_tables.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
+
+#ifndef RAMINIT_TABLES_H
+#define RAMINIT_TABLES_H
+
+#include <types.h>
+
+extern const u32 pattern[32][16];
+
+extern const u8 use_base[63][32];
+
+extern const u8 invert[63][32];
+
+#endif /* RAMINIT_TABLES_H */