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diff --git a/include/asm-mips/vr41xx/workpad.h b/include/asm-mips/vr41xx/workpad.h
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+/*
+ * workpad.h, Include file for IBM WorkPad z50.
+ *
+ * Copyright (C) 2002-2004 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
+ *
+ * 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 __IBM_WORKPAD_H
+#define __IBM_WORKPAD_H
+
+#include <asm/addrspace.h>
+#include <asm/vr41xx/vr41xx.h>
+
+/*
+ * Board specific address mapping
+ */
+#define VR41XX_ISA_MEM_BASE 0x10000000
+#define VR41XX_ISA_MEM_SIZE 0x04000000
+
+/* VR41XX_ISA_IO_BASE includes offset from real base. */
+#define VR41XX_ISA_IO_BASE 0x15000000
+#define VR41XX_ISA_IO_SIZE 0x03000000
+
+#define ISA_BUS_IO_BASE 0
+#define ISA_BUS_IO_SIZE VR41XX_ISA_IO_SIZE
+
+#define IO_PORT_BASE KSEG1ADDR(VR41XX_ISA_IO_BASE)
+#define IO_PORT_RESOURCE_START ISA_BUS_IO_BASE
+#define IO_PORT_RESOURCE_END (ISA_BUS_IO_BASE + ISA_BUS_IO_SIZE - 1)
+
+#endif /* __IBM_WORKPAD_H */
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