diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.h b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
new file mode 100644
index 0000000..885f018
--- /dev/null
+++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef HASWELL_RAMINIT_NATIVE_H
+#define HASWELL_RAMINIT_NATIVE_H
+
+enum raminit_boot_mode {
+	BOOTMODE_COLD,
+	BOOTMODE_WARM,
+	BOOTMODE_S3,
+	BOOTMODE_FAST,
+};
+
+enum raminit_status {
+	RAMINIT_STATUS_SUCCESS = 0,
+	RAMINIT_STATUS_UNSPECIFIED_ERROR, /** TODO: Deprecated in favor of specific values **/
+};
+
+enum generic_stepping {
+	STEPPING_A0 = 1,
+	STEPPING_B0 = 2,
+	STEPPING_C0 = 3,
+};
+
+struct sysinfo {
+	enum raminit_boot_mode bootmode;
+	enum generic_stepping stepping;
+	uint32_t cpu;		/* CPUID value */
+
+	bool dq_pins_interleaved;
+};
+
+void raminit_main(enum raminit_boot_mode bootmode);
+
+#endif