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diff --git a/arch/arm/mach-realview/hardware.h b/arch/arm/mach-realview/hardware.h
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+/*
+ * This file contains the hardware definitions of the RealView boards.
+ *
+ * Copyright (C) 2003 ARM Limited.
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+#include <asm/sizes.h>
+
+/* macro to get at IO space when running virtually */
+#ifdef CONFIG_MMU
+/*
+ * Statically mapped addresses:
+ *
+ * 10xx xxxx -> fbxx xxxx
+ * 1exx xxxx -> fdxx xxxx
+ * 1fxx xxxx -> fexx xxxx
+ */
+#define IO_ADDRESS(x) (((x) & 0x03ffffff) + 0xfb000000)
+#else
+#define IO_ADDRESS(x) (x)
+#endif
+#define __io_address(n) IOMEM(IO_ADDRESS(n))
+
+#endif