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diff --git a/target/alpha/cpu-param.h b/target/alpha/cpu-param.h
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+/*
+ * Alpha cpu parameters for qemu.
+ *
+ * Copyright (c) 2007 Jocelyn Mayer
+ * SPDX-License-Identifier: LGPL-2.0+
+ */
+
+#ifndef ALPHA_CPU_PARAM_H
+#define ALPHA_CPU_PARAM_H 1
+
+#define TARGET_LONG_BITS 64
+#define TARGET_PAGE_BITS 13
+
+/* ??? EV4 has 34 phys addr bits, EV5 has 40, EV6 has 44. */
+#define TARGET_PHYS_ADDR_SPACE_BITS 44
+#define TARGET_VIRT_ADDR_SPACE_BITS (30 + TARGET_PAGE_BITS)
+
+#define NB_MMU_MODES 3
+
+#endif