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diff --git a/package/system/utils/nvram/src/sdinitvals.h b/package/system/utils/nvram/src/sdinitvals.h
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+/*
+ * SDRAM init values
+ *
+ * Copyright 2007, Broadcom Corporation
+ * Copyright 2009, OpenWrt.org
+ * All Rights Reserved.
+ *
+ * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
+ * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
+ * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
+ *
+ */
+
+#ifndef _sdinitvals_h_
+#define _sdinitvals_h_
+
+/* SDRAM refresh control (refresh) register bits */
+#define SDRAM_REF(p) (((p)&0xff) | SDRAM_REF_EN) /* Refresh period */
+#define SDRAM_REF_EN 0x8000 /* Writing 1 enables periodic refresh */
+
+/* SDRAM Core default Init values (OCP ID 0x803) */
+#define MEM4MX16X2 0x419 /* 16 MB */
+
+#define SDRAM_INIT MEM4MX16X2
+#define SDRAM_BURSTFULL 0x0000 /* Use full page bursts */
+#define SDRAM_CONFIG SDRAM_BURSTFULL
+#define SDRAM_REFRESH SDRAM_REF(0x40)
+
+#endif /* _sdinitvals_h_ */